/*
 * svg-editor.js
 *
 * Licensed under the Apache License, Version 2
 *
 * Copyright(c) 2010 Alexis Deveria
 * Copyright(c) 2010 Pavol Rusnak
 * Copyright(c) 2010 Jeff Schiller
 * Copyright(c) 2010 Narendra Sisodiya
 *
 */

(function() { 
  
  if(!window.svgEditor) window.svgEditor = function($) {
    var svgCanvas;
    var Editor = {};
    var is_ready = false;
    
    var defaultPrefs = {
      lang:'en',
      iconsize:'m',
      bkgd_color:'#FFF',
      bkgd_url:'',
      img_save:'embed'
      },
      curPrefs = {},
      
      // Note: Difference between Prefs and Config is that Prefs can be
      // changed in the UI and are stored in the browser, config can not
      
      curConfig = {
        canvas_expansion: 1,
        dimensions: [640,480],
        initFill: {
          color: 'FF0000',  // solid red
          opacity: 1
        },
        initStroke: {
          width: 5,
          color: '000000',  // solid black
          opacity: 1
        },
        initOpacity: 1,
        imgPath: 'images/',
        langPath: 'locale/',
        extPath: 'extensions/',
        jGraduatePath: 'jgraduate/images/',
        extensions: ['ext-markers.js','ext-connector.js', 'ext-eyedropper.js', 'ext-shapes.js', 'ext-imagelib.js','ext-grid.js'],
        initTool: 'select',
        wireframe: false,
        colorPickerCSS: null,
        gridSnapping: false,
        snappingStep: 10
      },
      uiStrings = Editor.uiStrings = {
      "invalidAttrValGiven":"Invalid value given",
      "noContentToFitTo":"No content to fit to",
      "layer":"Layer",
      "dupeLayerName":"There is already a layer named that!",
      "enterUniqueLayerName":"Please enter a unique layer name",
      "enterNewLayerName":"Please enter the new layer name",
      "layerHasThatName":"Layer already has that name",
      "QmoveElemsToLayer":"Move selected elements to layer \"%s\"?",
      "QwantToClear":"Do you want to clear the drawing?\nThis will also erase your undo history!",
      "QwantToOpen":"Do you want to open a new file?\nThis will also erase your undo history!",
      "QerrorsRevertToSource":"There were parsing errors in your SVG source.\nRevert back to original SVG source?",
      "QignoreSourceChanges":"Ignore changes made to SVG source?",
      "featNotSupported":"Feature not supported",
      "enterNewImgURL":"Enter the new image URL",
      "defsFailOnSave": "NOTE: Due to a bug in your browser, this image may appear wrong (missing gradients or elements). It will however appear correct once actually saved.",
      "loadingImage":"Loading image, please wait...",
      "saveFromBrowser": "Select \"Save As...\" in your browser to save this image as a %s file.",
      "noteTheseIssues": "Also note the following issues: ",
      "ok":"OK",
      "cancel":"Cancel",
      "key_up":"Up",
      "key_down":"Down",
      "key_backspace":"Backspace",
      "key_del":"Del"
    };
    
    var curPrefs = {}; //$.extend({}, defaultPrefs);
    
    var customHandlers = {};
    
    Editor.curConfig = curConfig;
    
    Editor.tool_scale = 1;
    
    // Store and retrieve preferences
    $.pref = function(key, val) {
      if(val) curPrefs[key] = val;
      key = 'svg-edit-'+key;
      var host = location.hostname,
        onweb = host && host.indexOf('.') != -1,
        store = (val != undefined),
        storage = false;
      // Some FF versions throw security errors here
      try { 
        if(window.localStorage) { // && onweb removed so Webkit works locally
          storage = localStorage;
        }
      } catch(e) {}
      try { 
        if(window.globalStorage && onweb) {
          storage = globalStorage[host];
        }
      } catch(e) {}
      
      if(storage) {
        if(store) storage.setItem(key, val);
          else if (storage.getItem(key)) return storage.getItem(key) + ''; // Convert to string for FF (.value fails in Webkit)
      } else if(window.widget) {
        if(store) widget.setPreferenceForKey(val, key);
          else return widget.preferenceForKey(key);
      } else {
        if(store) {
          var d = new Date();
          d.setTime(d.getTime() + 31536000000);
          val = encodeURIComponent(val);
          document.cookie = key+'='+val+'; expires='+d.toUTCString();
        } else {
          var result = document.cookie.match(new RegExp(key + "=([^;]+)"));
          return result?decodeURIComponent(result[1]):'';
        }
      }
    }
    
    Editor.setConfig = function(opts) {
      $.each(opts, function(key, val) {
        // Only allow prefs defined in defaultPrefs
        if(key in defaultPrefs) {
          $.pref(key, val);
        }
      });
      $.extend(true, curConfig, opts);
      if(opts.extensions) {
        curConfig.extensions = opts.extensions;
      }

    }
    
    // Extension mechanisms must call setCustomHandlers with two functions: opts.open and opts.save
    // opts.open's responsibilities are:
    //   - invoke a file chooser dialog in 'open' mode
    //  - let user pick a SVG file
    //  - calls setCanvas.setSvgString() with the string contents of that file
    // opts.save's responsibilities are:
    //  - accept the string contents of the current document 
    //  - invoke a file chooser dialog in 'save' mode
    //   - save the file to location chosen by the user
    Editor.setCustomHandlers = function(opts) {
      Editor.ready(function() {
        if(opts.open) {
          $('#tool_open > input[type="file"]').remove();
          $('#tool_open').show();
          svgCanvas.open = opts.open;
        }
        if(opts.save) {
          show_save_warning = false;
          svgCanvas.bind("saved", opts.save);
        }
        if(opts.pngsave) {
          svgCanvas.bind("exported", opts.pngsave);
        }
        customHandlers = opts;
      });
    }
    
    Editor.randomizeIds = function() {
      svgCanvas.randomizeIds(arguments)
    }

    Editor.init = function() {
      (function() {
        // let the opener know SVG Edit is ready
        var w = window.top.opener;
        if (w) {
            try {
              var svgEditorReadyEvent = w.document.createEvent("Event");
              svgEditorReadyEvent.initEvent("svgEditorReady", true, true);
              w.document.documentElement.dispatchEvent(svgEditorReadyEvent);
            }
            catch(e) {}
        }
      })();

      (function() {
        // Load config/data from URL if given
        var urldata = $.deparam.querystring(true);
        if(!$.isEmptyObject(urldata)) {
          if(urldata.dimensions) {
            urldata.dimensions = urldata.dimensions.split(',');
          }
          
          if(urldata.extensions) {
            urldata.extensions = urldata.extensions.split(',');
          }
          
          if(urldata.bkgd_color) {
            urldata.bkgd_color = '#' + urldata.bkgd_color;
          }

          svgEditor.setConfig(urldata);
          
          // FIXME: This is null if Data URL ends with '='. 
          var src = urldata.source;
          var qstr = $.param.querystring();

          if(src) {
            if(src.indexOf("data:") === 0) {
              // plusses get replaced by spaces, so re-insert
              src = src.replace(/ /g, "+");
              Editor.loadFromDataURI(src);
            } else {
              Editor.loadFromString(src);
            }
          } else if(qstr.indexOf('paramurl=') !== -1) {
            // Get paramater URL (use full length of remaining location.href)
            svgEditor.loadFromURL(qstr.substr(9));
          } else if(urldata.url) {
            svgEditor.loadFromURL(urldata.url);
          }
        }
      })();
      
      var extFunc = function() {
        $.each(curConfig.extensions, function() {
          var extname = this;
          $.getScript(curConfig.extPath + extname, function(d) {
            // Fails locally in Chrome 5
            if(!d) {
              var s = document.createElement('script');
              s.src = curConfig.extPath + extname;
              document.querySelector('head').appendChild(s);
            }
          });
        });
      }
      
      // Load extensions
      // Bit of a hack to run extensions in local Opera/IE9
      if(document.location.protocol === 'file:') {
        setTimeout(extFunc, 100);
      } else {
        extFunc();
      }
      
      $.svgIcons(curConfig.imgPath + 'svg_edit_icons.svg', {
        w:24, h:24,
        id_match: false,
        no_img: true,
        fallback_path: curConfig.imgPath,
        fallback:{
          'new_image':'clear.png',
          'save':'save.png',
          'open':'open.png',
          'source':'source.png',
          'docprops':'document-properties.png',
          'wireframe':'wireframe.png',
          
          'undo':'undo.png',
          'redo':'redo.png',
          
          'select':'select.png',
          'select_node':'select_node.png',
          'pencil':'fhpath.png',
          'pen':'line.png',
          'square':'square.png',
          'rect':'rect.png',
          'fh_rect':'freehand-square.png',
          'circle':'circle.png',
          'ellipse':'ellipse.png',
          'fh_ellipse':'freehand-circle.png',
          'path':'path.png',
          'text':'text.png',
          'image':'image.png',
          'zoom':'zoom.png',
          
          'clone':'clone.png',
          'node_clone':'node_clone.png',
          'delete':'delete.png',
          'node_delete':'node_delete.png',
          'group':'shape_group.png',
          'ungroup':'shape_ungroup.png',
          'move_top':'move_top.png',
          'move_bottom':'move_bottom.png',
          'to_path':'to_path.png',
          'link_controls':'link_controls.png',
          'reorient':'reorient.png',
          
          'align_left':'align-left.png',
          'align_center':'align-center',
          'align_right':'align-right',
          'align_top':'align-top',
          'align_middle':'align-middle',
          'align_bottom':'align-bottom',
    
          'go_up':'go-up.png',
          'go_down':'go-down.png',
    
          'ok':'save.png',
          'cancel':'cancel.png',
          
          'arrow_right':'flyouth.png',
          'arrow_down':'dropdown.gif'
        },
        placement: {
          '#logo':'logo',
        
          '#tool_clear div,#layer_new':'new_image',
          '#tool_save div':'save',
          '#tool_export div':'export',
          '#tool_open div div':'open',
          '#tool_import div div':'import',
          '#tool_source':'source',
          '#tool_docprops > div':'docprops',
          '#tool_wireframe':'wireframe',
          
          '#tool_undo':'undo',
          '#tool_redo':'redo',
          
          '#tool_select':'select',
          '#tool_fhpath':'pencil',
          '#tool_line':'pen',
          '#tool_rect,#tools_rect_show':'rect',
          '#tool_square':'square',
          '#tool_fhrect':'fh_rect',
          '#tool_ellipse,#tools_ellipse_show':'ellipse',
          '#tool_circle':'circle',
          '#tool_fhellipse':'fh_ellipse',
          '#tool_path':'path',
          '#tool_text,#layer_rename':'text',
          '#tool_image':'image',
          '#tool_zoom':'zoom',
          
          '#tool_clone,#tool_clone_multi':'clone',
          '#tool_node_clone':'node_clone',
          '#layer_delete,#tool_delete,#tool_delete_multi':'delete',
          '#tool_node_delete':'node_delete',
          '#tool_add_subpath':'add_subpath',
          '#tool_openclose_path':'open_path',
          '#tool_move_top':'move_top',
          '#tool_move_bottom':'move_bottom',
          '#tool_topath':'to_path',
          '#tool_node_link':'link_controls',
          '#tool_reorient':'reorient',
          '#tool_group':'group',
          '#tool_ungroup':'ungroup',
          '#tool_unlink_use':'unlink_use',
          
          '#tool_alignleft, #tool_posleft':'align_left',
          '#tool_aligncenter, #tool_poscenter':'align_center',
          '#tool_alignright, #tool_posright':'align_right',
          '#tool_aligntop, #tool_postop':'align_top',
          '#tool_alignmiddle, #tool_posmiddle':'align_middle',
          '#tool_alignbottom, #tool_posbottom':'align_bottom',
          '#cur_position':'align',
          
          '#linecap_butt,#cur_linecap':'linecap_butt',
          '#linecap_round':'linecap_round',
          '#linecap_square':'linecap_square',
          
          '#linejoin_miter,#cur_linejoin':'linejoin_miter',
          '#linejoin_round':'linejoin_round',
          '#linejoin_bevel':'linejoin_bevel',
          
          '#url_notice':'warning',
          
          '#layer_up':'go_up',
          '#layer_down':'go_down',
          '#layer_moreopts':'context_menu',
          '#layerlist td.layervis':'eye',
          
          '#tool_source_save,#tool_docprops_save':'ok',
          '#tool_source_cancel,#tool_docprops_cancel':'cancel',
          
          '#rwidthLabel, #iwidthLabel':'width',
          '#rheightLabel, #iheightLabel':'height',
          '#cornerRadiusLabel span':'c_radius',
          '#angleLabel':'angle',
          '#zoomLabel':'zoom',
          '#tool_fill label': 'fill',
          '#tool_stroke .icon_label': 'stroke',
          '#group_opacityLabel': 'opacity',
          '#blurLabel': 'blur',
          '#font_sizeLabel': 'fontsize',
          
          '.flyout_arrow_horiz':'arrow_right',
          '.dropdown button, #main_button .dropdown':'arrow_down',
          '#palette .palette_item:first, #fill_bg, #stroke_bg':'no_color'
        },
        resize: {
          '#logo .svg_icon': 32,
          '.flyout_arrow_horiz .svg_icon': 5,
          '.layer_button .svg_icon, #layerlist td.layervis .svg_icon': 14,
          '.dropdown button .svg_icon': 7,
          '#main_button .dropdown .svg_icon': 9,
          '.palette_item:first .svg_icon, #fill_bg .svg_icon, #stroke_bg .svg_icon': 16,
          '.toolbar_button button .svg_icon':16,
          '.stroke_tool div div .svg_icon': 20,
          '#tools_bottom label .svg_icon': 18
        },
        callback: function(icons) {
          $('.toolbar_button button > svg, .toolbar_button button > img').each(function() {
            $(this).parent().prepend(this);
          });
          
          var tleft = $('#tools_left');
          if (tleft.length != 0) {
            var min_height = tleft.offset().top + tleft.outerHeight();
          }
//           var size = $.pref('iconsize');
//           if(size && size != 'm') {
//             svgEditor.setIconSize(size);        
//           } else if($(window).height() < min_height) {
//             // Make smaller
//             svgEditor.setIconSize('s');
//           }
          
          // Look for any missing flyout icons from plugins
          $('.tools_flyout').each(function() {
            var shower = $('#' + this.id + '_show');
            var sel = shower.attr('data-curopt');
            // Check if there's an icon here
            if(!shower.children('svg, img').length) {
              var clone = $(sel).children().clone();
              if(clone.length) {
                clone[0].removeAttribute('style'); //Needed for Opera
                shower.append(clone);
              }
            }
          });
          
          svgEditor.runCallbacks();
        }
      });

      Editor.canvas = svgCanvas = new $.SvgCanvas(document.getElementById("svgcanvas"), curConfig);
      
      var palette = ["#000000", "#3f3f3f", "#7f7f7f", "#bfbfbf", "#ffffff",
                 "#ff0000", "#ff7f00", "#ffff00", "#7fff00",
                 "#00ff00", "#00ff7f", "#00ffff", "#007fff",
                 "#0000ff", "#7f00ff", "#ff00ff", "#ff007f",
                 "#7f0000", "#7f3f00", "#7f7f00", "#3f7f00",
                 "#007f00", "#007f3f", "#007f7f", "#003f7f",
                 "#00007f", "#3f007f", "#7f007f", "#7f003f",
                 "#ffaaaa", "#ffd4aa", "#ffffaa", "#d4ffaa",
                 "#aaffaa", "#aaffd4", "#aaffff", "#aad4ff",
                 "#aaaaff", "#d4aaff", "#ffaaff", "#ffaad4",
                 ];
  
        isMac = (navigator.platform.indexOf("Mac") != -1);
        modKey = (isMac ? "meta+" : "ctrl+"); // ⌘
        path = svgCanvas.pathActions,
        undoMgr = svgCanvas.undoMgr,
        window.undoMgr = undoMgr;
        Utils = svgCanvas.Utils,
        default_img_url = curConfig.imgPath + "logo.png",
        workarea = $("#workarea"),
        canv_menu = $("#cmenu_canvas"),
        layer_menu = $("#cmenu_layers"),
        show_save_warning = false, 
        exportWindow = null, 
        tool_scale = 1;

      // This sets up alternative dialog boxes. They mostly work the same way as
      // their UI counterparts, expect instead of returning the result, a callback
      // needs to be included that returns the result as its first parameter.
      // In the future we may want to add additional types of dialog boxes, since 
      // they should be easy to handle this way.
      (function() {
        $('#dialog_container').draggable({cancel:'#dialog_content, #dialog_buttons *'});
        var box = $('#dialog_box'), btn_holder = $('#dialog_buttons');
        
        var dbox = function(type, msg, callback, defText) {
          $('#dialog_content').html('<p>'+msg.replace(/\n/g,'</p><p>')+'</p>')
            .toggleClass('prompt',(type=='prompt'));
          btn_holder.empty();
          
          var ok = $('<input type="button" value="' + uiStrings.ok + '">').appendTo(btn_holder);
        
          if(type != 'alert') {
            $('<input type="button" value="' + uiStrings.cancel + '">')
              .appendTo(btn_holder)
              .click(function() { box.hide();callback(false)});
          }
          
          if(type == 'prompt') {
            var input = $('<input type="text">').prependTo(btn_holder);
            input.val(defText || '');
            input.bind('keydown', 'return', function() {ok.click();});
          }
          
          if(type == 'process') {
            ok.hide();
          }
    
          box.show();
          
          ok.click(function() { 
            box.hide();
            var resp = (type == 'prompt')?input.val():true;
            if(callback) callback(resp);
          }).focus();
          
          if(type == 'prompt') input.focus();
        }
        
        $.alert = function(msg, cb) { dbox('alert', msg, cb);};
        $.confirm = function(msg, cb) {  dbox('confirm', msg, cb);};
        $.process_cancel = function(msg, cb) {  dbox('process', msg, cb);};
        $.prompt = function(msg, txt, cb) { dbox('prompt', msg, cb, txt);};
      }());
      
      var setSelectMode = function() {
        var curr = $('.tool_button_current');
        if(curr.length && curr[0].id !== 'tool_select') {
          curr.removeClass('tool_button_current').addClass('tool_button');
          $('#tool_select').addClass('tool_button_current').removeClass('tool_button');
          $('#styleoverrides').text('#svgcanvas svg *{cursor:move;pointer-events:all} #svgcanvas svg{cursor:default}');
        }
        svgCanvas.setMode('select');
      };
      
      var togglePathEditMode = function(editmode, elems) {
        $('#path_node_panel').toggle(editmode);
        $('#tools_bottom_2,#tools_bottom_3').toggle(!editmode);
        if(editmode) {
          // Change select icon
          $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');
          $('#tool_select').addClass('tool_button_current').removeClass('tool_button');
          setIcon('#tool_select', 'select_node');
          multiselected = false;
          if(elems.length) {
            selectedElement = elems[0];
          }
        } else {
          setIcon('#tool_select', 'select');
        }
      }
    
      // used to make the flyouts stay on the screen longer the very first time
      var flyoutspeed = 1250;
      var textBeingEntered = false;
      var selectedElement = null;
      var multiselected = false;
      var editingsource = false;
      var docprops = false;
      
      var fillPaint = new $.jGraduate.Paint({solidColor: curConfig.initFill.color});
      var strokePaint = new $.jGraduate.Paint({solidColor: curConfig.initStroke.color});
    
      var saveHandler = function(window,svg) {

        // by default, we add the XML prolog back, systems integrating SVG-edit (wikis, CMSs)                          
        // can just provide their own custom save handler and might not want the XML prolog                            
        svg = '<?xml version="1.0"?>\n' + svg;

        // is SVG-edit called from within a standalone app providing its own save handler?
        if (svgEditor.externalSaveHandler) {
          svgEditor.externalSaveHandler(svg);
          show_save_warning = false;
          window.top.close();
          return;
        }
      
        // Opens the SVG in new window, with warning about Mozilla bug #308590 when applicable
        
        var ua = navigator.userAgent;

        // Chrome 5 (and 6?) don't allow saving, show source instead ( http://code.google.com/p/chromium/issues/detail?id=46735 )
        // IE9 doesn't allow standalone Data URLs ( https://connect.microsoft.com/IE/feedback/details/542600/data-uri-images-fail-when-loaded-by-themselves )
        if((~ua.indexOf('Chrome') && $.browser.version >= 533) || ~ua.indexOf('MSIE')) {
          showSourceEditor(0,true);
          return;  
        }
        
        var win = window.open("data:image/svg+xml;base64," + Utils.encode64(svg));
        
        // Alert will only appear the first time saved OR the first time the bug is encountered
        var done = $.pref('save_notice_done');
        if(done !== "all") {
    
          var note = uiStrings.saveFromBrowser.replace('%s', 'SVG');
          
          // Check if FF and has <defs/>
          if(ua.indexOf('Gecko/') !== -1) {
            if(svg.indexOf('<defs') !== -1) {
              note += "\n\n" + uiStrings.defsFailOnSave;
              $.pref('save_notice_done', 'all');
              done = "all";
            } else {
              $.pref('save_notice_done', 'part');
            }
          } else {
            $.pref('save_notice_done', 'all'); 
          }
          
          if(done !== 'part') {
            win.alert(note);
          }
        }
      };
      
      var exportHandler = function(window, data) {
        var issues = data.issues;
        
        if(!$('#export_canvas').length) {
          $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');
        }
        var c = $('#export_canvas')[0];
        
        c.width = svgCanvas.contentW;
        c.height = svgCanvas.contentH;
        canvg(c, data.svg, {renderCallback: function() {
          var datauri = c.toDataURL('image/png');
          exportWindow.location.href = datauri;
          var done = $.pref('export_notice_done');
          if(done !== "all") {
            var note = uiStrings.saveFromBrowser.replace('%s', 'PNG');
            
            // Check if there's issues
            if(issues.length) {
              var pre = "\n \u2022 ";
              note += ("\n\n" + uiStrings.noteTheseIssues + pre + issues.join(pre));
            } 
            
            // Note that this will also prevent the notice even though new issues may appear later.
            // May want to find a way to deal with that without annoying the user
            $.pref('export_notice_done', 'all'); 
            exportWindow.alert(note);
          }
        }});
      };
      
      // called when we've selected a different element
      var selectedChanged = function(window,elems) {
        var mode = svgCanvas.getMode();
        var is_node = (mode == "pathedit");
        // if elems[1] is present, then we have more than one element
        selectedElement = (elems.length == 1 || elems[1] == null ? elems[0] : null);
        multiselected = (elems.length >= 2 && elems[1] != null);
        if (selectedElement != null) {
          // unless we're already in always set the mode of the editor to select because
          // upon creation of a text element the editor is switched into
          // select mode and this event fires - we need our UI to be in sync
          
          if (mode != "multiselect" && !is_node) {
            updateToolbar();
          } 
          
        } // if (elem != null)
    
        // Deal with pathedit mode
        togglePathEditMode(is_node, elems);
        updateContextPanel();
        svgCanvas.runExtensions("selectedChanged", {
          elems: elems,
          selectedElement: selectedElement,
          multiselected: multiselected
        });
      };
    
      // called when any element has changed
      var elementChanged = function(window,elems) {
        if(svgCanvas.getMode() == "select") {
          setSelectMode();
        }
        
        for (var i = 0; i < elems.length; ++i) {
          var elem = elems[i];
          
          // if the element changed was the svg, then it could be a resolution change
          if (elem && elem.tagName == "svg") {
            populateLayers();
            updateCanvas();
          } 
          // Update selectedElement if element is no longer part of the image.
          // This occurs for the text elements in Firefox
          else if(elem && selectedElement && selectedElement.parentNode == null) {
//             || elem && elem.tagName == "path" && !multiselected) { // This was added in r1430, but not sure why
            selectedElement = elem;
          }
        }
        
        show_save_warning = true;
    
        // we update the contextual panel with potentially new
        // positional/sizing information (we DON'T want to update the
        // toolbar here as that creates an infinite loop)
        // also this updates the history buttons
    
        // we tell it to skip focusing the text control if the
        // text element was previously in focus
        updateContextPanel();
        
        svgCanvas.runExtensions("elementChanged", {
          elems: elems
        });
      };
      
      var zoomChanged = function(window, bbox, autoCenter) {
        var scrbar = 15,
          res = svgCanvas.getResolution(),
          w_area = workarea,
          canvas_pos = $('#svgcanvas').position();
        w_area.css('cursor','auto');
        var z_info = svgCanvas.setBBoxZoom(bbox, w_area.width()-scrbar, w_area.height()-scrbar);
        if(!z_info) return;
        var zoomlevel = z_info.zoom,
          bb = z_info.bbox;
        $('#zoom').val(Math.round(zoomlevel*100));
        
        if(autoCenter) {
          updateCanvas();
        } else {
          updateCanvas(false, {x: bb.x * zoomlevel + (bb.width * zoomlevel)/2, y: bb.y * zoomlevel + (bb.height * zoomlevel)/2});
        }
    
        if(svgCanvas.getMode() == 'zoom' && bb.width) {
          // Go to select if a zoom box was drawn
          setSelectMode();
        }
        zoomDone();
      }
      
      var flyout_funcs = {};
      
      var setupFlyouts = function(holders) {
        $.each(holders, function(hold_sel, btn_opts) {
          var buttons = $(hold_sel).children();
          var show_sel = hold_sel + '_show';
          var shower = $(show_sel);
          var def = false;
          buttons.addClass('tool_button')
            .unbind('click mousedown mouseup') // may not be necessary
            .each(function(i) {
              // Get this buttons options
              var opts = btn_opts[i];
              
              // Remember the function that goes with this ID
              flyout_funcs[opts.sel] = opts.fn;
    
              if(opts.isDefault) def = i;
              
              // Clicking the icon in flyout should set this set's icon
              
              var func = function() {
                if($(this).hasClass('disabled')) return false;
                if (toolButtonClick(show_sel)) {
                  opts.fn();
                }
                if(opts.icon) {
                  var icon = $.getSvgIcon(opts.icon, true);
                } else {
                  // 
                  var icon = $(opts.sel).children().eq(0).clone();
                }
                
                icon[0].setAttribute('width',shower.width());
                icon[0].setAttribute('height',shower.height());
                shower.children(':not(.flyout_arrow_horiz)').remove();
                shower.append(icon).attr('data-curopt', opts.sel); // This sets the current mode
              }
              
              $(this).mouseup(func);
              
              if(opts.key) {
                $(document).bind('keydown', opts.key+'', func);
              }
            });
          
          if(def) {
            shower.attr('data-curopt', btn_opts[def].sel);
          } else if(!shower.attr('data-curopt')) {
            // Set first as default
            shower.attr('data-curopt', btn_opts[0].sel);
          }
          
          var timer;
          
          // Clicking the "show" icon should set the current mode
          shower.mousedown(function(evt) {
            if(shower.hasClass('disabled')) return false;
            var holder = $(show_sel.replace('_show',''));
            var l = holder.css('left');
            var w = holder.width()*-1;
            var time = holder.data('shown_popop')?200:0;
            timer = setTimeout(function() {
              // Show corresponding menu
              if(!shower.data('isLibrary')) {
                holder.css('left', w).show().animate({
                  left: l
                },150);
              } else {
                holder.css('left', l).show();
              }
              holder.data('shown_popop',true);
            },time);
            evt.preventDefault();
          }).mouseup(function(evt) {
            clearTimeout(timer);
            var opt = $(this).attr('data-curopt');
            // Is library and popped up, so do nothing
            if(shower.data('isLibrary') && $(show_sel.replace('_show','')).is(':visible')) {
              toolButtonClick(show_sel, true);
              return;
            }
            if (toolButtonClick(show_sel) && (opt in flyout_funcs)) {
              flyout_funcs[opt]();
            }
          });
          
          //   $('#tools_rect').mouseleave(function(){$('#tools_rect').fadeOut();});
          
          var pos = $(show_sel).position();
          $(hold_sel).css({'left': pos.left+34, 'top': pos.top+77});
        });
        
        setFlyoutTitles();
      }
      
      var makeFlyoutHolder = function(id, child) {
        var div = $('<div>',{
          'class': 'tools_flyout',
          id: id
        }).appendTo('#svg_editor').append(child);
        
        return div;
      }
      
      var setFlyoutPositions = function() {
        $('.tools_flyout').each(function() {
          var shower = $('#' + this.id + '_show');
          var pos = shower.offset();
          var w = shower.outerWidth();
          $(this).css({left: (pos.left + w)*tool_scale, top: pos.top});
        });
      }
      
      var setFlyoutTitles = function() {
        $('.tools_flyout').each(function() {
          var shower = $('#' + this.id + '_show');
          var tooltips = [];
          $(this).children().each(function() {
            tooltips.push(this.title);
          });
          shower[0].title = tooltips.join(' / ');
        });
      }

      var resize_timer;      
      
      var extAdded = function(window, ext) {
    
        var cb_called = false;
        var resize_done = false;
        var cb_ready = true; // Set to false to delay callback (e.g. wait for $.svgIcons)
        
        function prepResize() {
          if(resize_timer) {
            clearTimeout(resize_timer);
            resize_timer = null;
          }
          if(!resize_done) {
            resize_timer = setTimeout(function() {
              resize_done = true;
              setIconSize(curPrefs.iconsize);
            }, 50);  
          }
        }

        
        var runCallback = function() {
          if(ext.callback && !cb_called && cb_ready) {
            cb_called = true;
            ext.callback();
          }
        }
    
        var btn_selects = [];
    
        if(ext.context_tools) {
          $.each(ext.context_tools, function(i, tool) {
            // Add select tool
            var cont_id = tool.container_id?(' id="' + tool.container_id + '"'):"";
            
            var panel = $('#' + tool.panel);
            
            // create the panel if it doesn't exist
            if(!panel.length)
              panel = $('<div>', {id: tool.panel}).appendTo("#tools_top");
            
            // TODO: Allow support for other types, or adding to existing tool
            switch (tool.type) {
            case 'tool_button':
              var html = '<div class="tool_button">' + tool.id + '</div>';
              var div = $(html).appendTo(panel);
              if (tool.events) {
                $.each(tool.events, function(evt, func) {
                  $(div).bind(evt, func);
                });
              }
              break;
            case 'select':
              var html = '<label' + cont_id + '>'
                + '<select id="' + tool.id + '">';
              $.each(tool.options, function(val, text) {
                var sel = (val == tool.defval) ? " selected":"";
                html += '<option value="'+val+'"' + sel + '>' + text + '</option>';
              });
              html += "</select></label>";
              // Creates the tool, hides & adds it, returns the select element
              var sel = $(html).appendTo(panel).find('select');
              
              $.each(tool.events, function(evt, func) {
                $(sel).bind(evt, func);
              });
              break;
            case 'button-select': 
              var html = '<div id="' + tool.id + '" class="dropdown toolset" title="' + tool.title + '">'
                + '<div id="cur_' + tool.id + '" class="icon_label"></div><button></button></div>';
              
              var list = $('<ul id="' + tool.id + '_opts"></ul>').appendTo('#option_lists');
              
              if(tool.colnum) {
                list.addClass('optcols' + tool.colnum);
              }
              
              // Creates the tool, hides & adds it, returns the select element
              var dropdown = $(html).appendTo(panel).children();
              
              btn_selects.push({
                elem: ('#' + tool.id),
                list: ('#' + tool.id + '_opts'),
                title: tool.title,
                callback: tool.events.change,
                cur: ('#cur_' + tool.id)
              });

              break;
            case 'input':
              var html = '<label' + cont_id + '>'
                + '<span id="' + tool.id + '_label">' 
                + tool.label + ':</span>'
                + '<input id="' + tool.id + '" title="' + tool.title
                + '" size="' + (tool.size || "4") + '" value="' + (tool.defval || "") + '" type="text"/></label>'
                
              // Creates the tool, hides & adds it, returns the select element
              
              // Add to given tool.panel
              var inp = $(html).appendTo(panel).find('input');
              
              if(tool.spindata) {
                inp.SpinButton(tool.spindata);
              }
              
              if(tool.events) {
                $.each(tool.events, function(evt, func) {
                  inp.bind(evt, func);
                });
              }
              break;
              
            default:
              break;
            }
          });
        }
        
        if(ext.buttons) {
          var fallback_obj = {},
            placement_obj = {},
            svgicons = ext.svgicons;
          var holders = {};
          
        
          // Add buttons given by extension
          $.each(ext.buttons, function(i, btn) {
            var icon;
            var id = btn.id;
            var num = i;
            
            // Give button a unique ID
            while($('#'+id).length) {
              id = btn.id + '_' + (++num);
            }
    
            if(!svgicons) {
              icon = $('<img src="' + btn.icon + '">');
            } else {
              fallback_obj[id] = btn.icon;
              var svgicon = btn.svgicon?btn.svgicon:btn.id;
              if(btn.type == 'app_menu') {
                placement_obj['#' + id + ' > div'] = svgicon;
              } else {
                placement_obj['#' + id] = svgicon;
              }
            }
            
            var cls, parent;
            
            // Set button up according to its type
            switch ( btn.type ) {
            case 'mode_flyout':
            case 'mode':
              cls = 'tool_button';
              parent = "#tools_left";
              break;
            case 'context':
              cls = 'tool_button';
              parent = "#" + btn.panel;
              // create the panel if it doesn't exist
              if(!$(parent).length)
                $('<div>', {id: btn.panel}).appendTo("#tools_top");
              break;
            case 'app_menu':
              cls = '';
              parent = '#main_menu ul';
              break;
            }
            
            var button = $((btn.list || btn.type == 'app_menu')?'<li/>':'<div/>')
              .attr("id", id)
              .attr("title", btn.title)
              .addClass(cls);
            if(!btn.includeWith && !btn.list) {
              if("position" in btn) {
                $(parent).children().eq(btn.position).before(button);
              } else {
                button.appendTo(parent);
              }

              if(btn.type =='mode_flyout') {
              // Add to flyout menu / make flyout menu
  //               var opts = btn.includeWith;
  //               // opts.button, default, position
                var ref_btn = $(button);
                
                var flyout_holder = ref_btn.parent();
                // Create a flyout menu if there isn't one already
                if(!ref_btn.parent().hasClass('tools_flyout')) {
                  // Create flyout placeholder
                  var tls_id = ref_btn[0].id.replace('tool_','tools_')
                  var show_btn = ref_btn.clone()
                    .attr('id',tls_id + '_show')
                    .append($('<div>',{'class':'flyout_arrow_horiz'}));
                    
                  ref_btn.before(show_btn);
                
                  // Create a flyout div
                  flyout_holder = makeFlyoutHolder(tls_id, ref_btn);
                  flyout_holder.data('isLibrary', true);
                  show_btn.data('isLibrary', true);
                } 
                
                
                
  //               var ref_data = Actions.getButtonData(opts.button);
                
                placement_obj['#' + tls_id + '_show'] = btn.id;
                // TODO: Find way to set the current icon using the iconloader if this is not default
                
                // Include data for extension button as well as ref button
                var cur_h = holders['#'+flyout_holder[0].id] = [{
                  sel: '#'+id,
                  fn: btn.events.click,
                  icon: btn.id,
//                   key: btn.key,
                  isDefault: true
                }, ref_data];
  //               
  //               // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}
  //                 
  //               var pos  = ("position" in opts)?opts.position:'last';
  //               var len = flyout_holder.children().length;
  //               
  //               // Add at given position or end
  //               if(!isNaN(pos) && pos >= 0 && pos < len) {
  //                 flyout_holder.children().eq(pos).before(button);
  //               } else {
  //                 flyout_holder.append(button);
  //                 cur_h.reverse();
  //               }
              } else if(btn.type == 'app_menu') {
                button.append('<div>').append(btn.title);
              }
              
            } else if(btn.list) {
              // Add button to list
              button.addClass('push_button');
              $('#' + btn.list + '_opts').append(button);
               if(btn.isDefault) {
                 $('#cur_' + btn.list).append(button.children().clone());
                 var svgicon = btn.svgicon?btn.svgicon:btn.id;
                 placement_obj['#cur_' + btn.list] = svgicon;
               }
            } else if(btn.includeWith) {
              // Add to flyout menu / make flyout menu
              var opts = btn.includeWith;
              // opts.button, default, position
              var ref_btn = $(opts.button);
              
              var flyout_holder = ref_btn.parent();
              // Create a flyout menu if there isn't one already
              if(!ref_btn.parent().hasClass('tools_flyout')) {
                // Create flyout placeholder
                var tls_id = ref_btn[0].id.replace('tool_','tools_')
                var show_btn = ref_btn.clone()
                  .attr('id',tls_id + '_show')
                  .append($('<div>',{'class':'flyout_arrow_horiz'}));
                  
                ref_btn.before(show_btn);
              
                // Create a flyout div
                flyout_holder = makeFlyoutHolder(tls_id, ref_btn);
              } 
              
              var ref_data = Actions.getButtonData(opts.button);
              
              if(opts.isDefault) {
                placement_obj['#' + tls_id + '_show'] = btn.id;
              } 
              // TODO: Find way to set the current icon using the iconloader if this is not default
              
              // Include data for extension button as well as ref button
              var cur_h = holders['#'+flyout_holder[0].id] = [{
                sel: '#'+id,
                fn: btn.events.click,
                icon: btn.id,
                key: btn.key,
                isDefault: btn.includeWith?btn.includeWith.isDefault:0
              }, ref_data];
              
              // {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'}
                
              var pos  = ("position" in opts)?opts.position:'last';
              var len = flyout_holder.children().length;
              
              // Add at given position or end
              if(!isNaN(pos) && pos >= 0 && pos < len) {
                flyout_holder.children().eq(pos).before(button);
              } else {
                flyout_holder.append(button);
                cur_h.reverse();
              }
            } 
            
            if(!svgicons) {
              button.append(icon);
            }
            
            if(!btn.list) {
              // Add given events to button
              $.each(btn.events, function(name, func) {
                if(name == "click") {
                  if(btn.type == 'mode') {
                    if(btn.includeWith) {
                      button.bind(name, func);
                    } else {
                      button.bind(name, function() {
                        if(toolButtonClick(button)) {
                          func();
                        }
                      });
                    }
                    if(btn.key) {
                      $(document).bind('keydown', btn.key, func);
                      if(btn.title) button.attr("title", btn.title + ' ['+btn.key+']');
                    }
                  } else {
                    button.bind(name, func);
                  }
                } else {
                  button.bind(name, func);
                }
              });
            }
            
            setupFlyouts(holders);
          });
          
          $.each(btn_selects, function() {
            addAltDropDown(this.elem, this.list, this.callback, {seticon: true}); 
          });
          
          if (svgicons)
            cb_ready = false; // Delay callback

          $.svgIcons(svgicons, {
            w:24, h:24,
            id_match: false,
            no_img: true,
            fallback: fallback_obj,
            placement: placement_obj,
            callback: function(icons) {
              // Non-ideal hack to make the icon match the current size
              if(curPrefs.iconsize && curPrefs.iconsize != 'm') {
                prepResize();
              }
              cb_ready = true; // Ready for callback
              runCallback();
            }
        
          });
        }
        
        runCallback();
      };
      
      var getPaint = function(color, opac) {
        // update the editor's fill paint
        var opts = null;
        if (color.substr(0,5) == "url(#") {
          var grad = document.getElementById(color.substr(5,color.length-6));
          opts = { alpha: opac };
          opts[grad.tagName] = grad;
        } 
        else if (color.substr(0,1) == "#") {
          opts = {
            alpha: opac,
            solidColor: color.substr(1)
          };
        }
        else {
          opts = {
            alpha: opac,
            solidColor: 'none'
          };
        }
        return new $.jGraduate.Paint(opts);
      };  
    
      // updates the toolbar (colors, opacity, etc) based on the selected element
      // This function also updates the opacity and id elements that are in the context panel
      var updateToolbar = function() {
        if (selectedElement != null && $.inArray(selectedElement.tagName, ['use', 'image', 'foreignObject', 'g', 'a']) === -1) {
        
          // get opacity values
          var fillOpacity = parseFloat(selectedElement.getAttribute("fill-opacity"));
          if (isNaN(fillOpacity)) {
            fillOpacity = 1.0;
          }
          
          var strokeOpacity = parseFloat(selectedElement.getAttribute("stroke-opacity"));
          if (isNaN(strokeOpacity)) {
            strokeOpacity = 1.0;
          }
    
          // update fill color and opacity
          var fillColor = selectedElement.getAttribute("fill")||"black";
          // prevent undo on these canvas changes
          svgCanvas.setColor('fill', fillColor, true);
          svgCanvas.setPaintOpacity('fill', fillOpacity, true);
    
          // update stroke color and opacity
          var strokeColor = selectedElement.getAttribute("stroke")||"none";
          // prevent undo on these canvas changes
          svgCanvas.setColor('stroke', strokeColor, true);
          svgCanvas.setPaintOpacity('stroke', strokeOpacity, true);
          
          // update the rect inside #fill_color
          $("#stroke_color rect").attr({
            fill: strokeColor,
            opacity: strokeOpacity
          });

          // update the rect inside #fill_color
          $("#fill_color rect").attr({
            fill: fillColor,
            opacity: fillOpacity
          });
    
          fillOpacity *= 100;
          strokeOpacity *= 100;
          
          fillPaint = getPaint(fillColor, fillOpacity);
          strokePaint = getPaint(strokeColor, strokeOpacity);
          
          fillOpacity = fillOpacity + " %";
          strokeOpacity = strokeOpacity + " %";
    
          // update fill color
          if (fillColor == "none") {
            fillOpacity = "N/A";
          }
          if (strokeColor == null || strokeColor == "" || strokeColor == "none") {
            strokeColor = "none";
            strokeOpacity = "N/A";
          }
          
          $('#stroke_width').val(selectedElement.getAttribute("stroke-width")||1).change();
          $('#stroke_style').val(selectedElement.getAttribute("stroke-dasharray")||"none").change();

          var attr = selectedElement.getAttribute("stroke-linejoin") || 'miter';
          
          if ($('#linejoin_' + attr).length != 0)
            setStrokeOpt($('#linejoin_' + attr)[0]);
          
          attr = selectedElement.getAttribute("stroke-linecap") || 'butt';
          
          if ($('#linecap_' + attr).length != 0)
            setStrokeOpt($('#linecap_' + attr)[0]);

        }
        
        // All elements including image and group have opacity
        if(selectedElement != null) {
          var opac_perc = ((selectedElement.getAttribute("opacity")||1.0)*100);
          $('#group_opacity').val(opac_perc);
          $('#opac_slider').slider('option', 'value', opac_perc);
          $('#elem_id').val(selectedElement.id);
        }
        
        updateToolButtonState();
      };
    
      var setImageURL = Editor.setImageURL = function(url) {
        if(!url) url = default_img_url;
        
        svgCanvas.setImageURL(url);
        $('#image_url').val(url);
        
        if(url.indexOf('data:') === 0) {
          // data URI found
          $('#image_url').hide();
          $('#change_image_url').show();
        } else {
          // regular URL
          
          svgCanvas.embedImage(url, function(datauri) {
            if(!datauri) {
              // Couldn't embed, so show warning
              $('#url_notice').show();
            } else {
              $('#url_notice').hide();
            }
            default_img_url = url;
          });
          $('#image_url').show();
          $('#change_image_url').hide();
        }
      }
    
      var setInputWidth = function(elem) {
        var w = Math.min(Math.max(12 + elem.value.length * 6, 50), 300);
        $(elem).width(w);
      }
    
      // updates the context panel tools based on the selected element
      var updateContextPanel = function() {
        var elem = selectedElement;
        // If element has just been deleted, consider it null
        if(elem != null && !elem.parentNode) elem = null;
        var currentLayer = svgCanvas.getCurrentLayer();
        var currentMode = svgCanvas.getMode();
        // No need to update anything else in rotate mode
        if (currentMode == 'rotate' && elem != null) {
          var ang = svgCanvas.getRotationAngle(elem);
          $('#angle').val(ang);
          $('#tool_reorient').toggleClass('disabled', ang == 0);
          return;
        }
        var is_node = currentMode == 'pathedit'; //elem ? (elem.id && elem.id.indexOf('pathpointgrip') == 0) : false;
        $('#selected_panel, #multiselected_panel, #g_panel, #rect_panel, #circle_panel,\
          #ellipse_panel, #line_panel, #text_panel, #image_panel, #container_panel, #use_panel').hide();
        if (elem != null) {
          var elname = elem.nodeName;
          
          // If this is a link with no transform and one child, pretend
          // its child is selected
//           console.log('go', elem)
//           if(elname === 'a') { // && !$(elem).attr('transform')) {
//             elem = elem.firstChild;
//           }

          
          var angle = svgCanvas.getRotationAngle(elem);
          $('#angle').val(angle);
          
          var blurval = svgCanvas.getBlur(elem);
          $('#blur').val(blurval);
          $('#blur_slider').slider('option', 'value', blurval);
          
          if(svgCanvas.addedNew) {
            if(elname == 'image') {
              // Prompt for URL if not a data URL
              if(svgCanvas.getHref(elem).indexOf('data:') !== 0) {
                promptImgURL();
              }
            } else if(elname == 'text') {
              // TODO: Do something here for new text
            }
          }
          
          if(!is_node && currentMode != 'pathedit') {
            $('#selected_panel').show();
            // Elements in this array already have coord fields
            if($.inArray(elname, ['line', 'circle', 'ellipse']) != -1) {
              $('#xy_panel').hide();
            } else {
              var x,y;
              // Get BBox vals for g, polyline and path
              if($.inArray(elname, ['g', 'polyline', 'path']) != -1) {
                var bb = svgCanvas.getStrokedBBox([elem]);
                if(bb) {
                  x = bb.x;
                  y = bb.y;
                }
              } else {
                x = elem.getAttribute('x');
                y = elem.getAttribute('y');
              }
              $('#selected_x').val(x || 0);
              $('#selected_y').val(y || 0);
              $('#xy_panel').show();
            }
            
            // Elements in this array cannot be converted to a path
            var no_path = $.inArray(elname, ['image', 'text', 'path', 'g', 'use']) == -1;
            $('#tool_topath').toggle(no_path);
            $('#tool_reorient').toggle(elname == 'path');
            $('#tool_reorient').toggleClass('disabled', angle == 0);
          } else {
            var point = path.getNodePoint();
            $('#tool_add_subpath').removeClass('push_button_pressed').addClass('tool_button');
            $('#tool_node_delete').toggleClass('disabled', !path.canDeleteNodes);
            
            // Show open/close button based on selected point
            setIcon('#tool_openclose_path', path.closed_subpath ? 'open_path' : 'close_path');
            
            if(point) {
              var seg_type = $('#seg_type');
              $('#path_node_x').val(point.x);
              $('#path_node_y').val(point.y);
              if(point.type) {
                seg_type.val(point.type).removeAttr('disabled');
              } else {
                seg_type.val(4).attr('disabled','disabled');
              }
            }
            return;
          }
          
          // update contextual tools here
          var panels = {
            g: [],
            rect: ['rx','width','height'],
            image: ['width','height'],
            circle: ['cx','cy','r'],
            ellipse: ['cx','cy','rx','ry'],
            line: ['x1','y1','x2','y2'], 
            text: [],
            'use': []
          };
          
          var el_name = elem.tagName;
          
//           if($(elem).data('gsvg')) {
//             $('#g_panel').show();
//           }
          
          if(panels[el_name]) {
            var cur_panel = panels[el_name];
            
            
            $('#' + el_name + '_panel').show();
      
            $.each(cur_panel, function(i, item) {
              $('#' + el_name + '_' + item).val(elem.getAttribute(item) || 0);
            });
            
            if(el_name == 'text') {
              $('#text_panel').css("display", "inline");  
              if (svgCanvas.getItalic()) {
                $('#tool_italic').addClass('push_button_pressed').removeClass('tool_button');
              }
              else {
                $('#tool_italic').removeClass('push_button_pressed').addClass('tool_button');
              }
              if (svgCanvas.getBold()) {
                $('#tool_bold').addClass('push_button_pressed').removeClass('tool_button');
              }
              else {
                $('#tool_bold').removeClass('push_button_pressed').addClass('tool_button');
              }
              $('#font_family').val(elem.getAttribute("font-family"));
              $('#font_size').val(elem.getAttribute("font-size"));
              $('#text').val(elem.textContent);
              if (svgCanvas.addedNew) {
                // Timeout needed for IE9
                setTimeout(function() {
                  $('#text').focus().select();
                },100);
              }
            } // text
            else if(el_name == 'image') {
              setImageURL(svgCanvas.getHref(elem));
            } // image
            else if(el_name == 'g' || el_name == 'use') {
              $('#container_panel').show();
              var title = svgCanvas.getTitle();
              var label = $('#g_title')[0];
              label.value = title;
              setInputWidth(label);
              var d = 'disabled';
              if(el_name == 'use') {
                label.setAttribute(d, d);
              } else {
                label.removeAttribute(d);
              }
            }
          }
        } // if (elem != null)
        else if (multiselected) {
          $('#multiselected_panel').show();
        } else {
          $('#cmenu_canvas li').disableContextMenuItems('#delete,#cut,#copy,#move_up,#move_down');
        }
        
        // update history buttons
        if (undoMgr.getUndoStackSize() > 0) {
          $('#tool_undo').removeClass( 'disabled');
        }
        else {
          $('#tool_undo').addClass( 'disabled');
        }
        if (undoMgr.getRedoStackSize() > 0) {
          $('#tool_redo').removeClass( 'disabled');
        }
        else {
          $('#tool_redo').addClass( 'disabled');
        }
        
        svgCanvas.addedNew = false;
    
        if ( (elem && !is_node)  || multiselected) {
          // update the selected elements' layer
          $('#selLayerNames').removeAttr('disabled').val(currentLayer);
          
          // Enable regular menu options
          canv_menu.enableContextMenuItems('#delete,#cut,#copy,#move_down,#move_up');
        }
        else {
          $('#selLayerNames').attr('disabled', 'disabled');
        }
      };
    
      $('#text').focus( function(){ textBeingEntered = true; } );
      $('#text').blur( function(){ textBeingEntered = false; } );
      
      // bind the selected event to our function that handles updates to the UI
      svgCanvas.bind("selected", selectedChanged);
      svgCanvas.bind("changed", elementChanged);
      svgCanvas.bind("saved", saveHandler);
      svgCanvas.bind("exported", exportHandler);
      svgCanvas.bind("zoomed", zoomChanged);
      svgCanvas.bind("extension_added", extAdded);
      svgCanvas.textActions.setInputElem($("#text")[0]);
    
      var str = '<div class="palette_item" data-rgb="none"></div>'
      $.each(palette, function(i,item){
        str += '<div class="palette_item" style="background-color: ' + item + ';" data-rgb="' + item + '"></div>';
      });
      $('#palette').append(str);
      
      // Set up editor background functionality
      // TODO add checkerboard as "pattern"
      var color_blocks = ['#FFF','#888','#000']; // ,'url(data:image/gif;base64,R0lGODlhEAAQAIAAAP%2F%2F%2F9bW1iH5BAAAAAAALAAAAAAQABAAAAIfjG%2Bgq4jM3IFLJgpswNly%2FXkcBpIiVaInlLJr9FZWAQA7)'];
      var str = '';
      $.each(color_blocks, function() {
        str += '<div class="color_block" style="background-color:' + this + ';"></div>';
      });
      $('#bg_blocks').append(str);
      var blocks = $('#bg_blocks div');
      var cur_bg = 'cur_background';
      blocks.each(function() {
        var blk = $(this);
        blk.click(function() {
          blocks.removeClass(cur_bg);
          $(this).addClass(cur_bg);
        });
      });
    
      if($.pref('bkgd_color')) {
        setBackground($.pref('bkgd_color'), $.pref('bkgd_url'));
      } else if($.pref('bkgd_url')) {
        // No color set, only URL
        setBackground(defaultPrefs.bkgd_color, $.pref('bkgd_url'));
      }
      
      if($.pref('img_save')) {
        curPrefs.img_save = $.pref('img_save');
        $('#image_save_opts input').val([curPrefs.img_save]);
      }
    
      var changeRectRadius = function(ctl) {
        svgCanvas.setRectRadius(ctl.value);
      }
      
      var changeFontSize = function(ctl) {
        svgCanvas.setFontSize(ctl.value);
      }
      
      var changeStrokeWidth = function(ctl) {
        var val = ctl.value;
        if(val == 0 && selectedElement && $.inArray(selectedElement.nodeName, ['line', 'polyline']) != -1) {
          val = ctl.value = 1;
        }
        svgCanvas.setStrokeWidth(val);
      }
      
      var changeRotationAngle = function(ctl) {
        svgCanvas.setRotationAngle(ctl.value);
        $('#tool_reorient').toggleClass('disabled', ctl.value == 0);
      }
      var changeZoom = function(ctl) {
        var zoomlevel = ctl.value / 100;
        var zoom = svgCanvas.getZoom();
        var w_area = workarea;
        
        zoomChanged(window, {
          width: 0,
          height: 0,
          // center pt of scroll position
          x: (w_area[0].scrollLeft + w_area.width()/2)/zoom, 
          y: (w_area[0].scrollTop + w_area.height()/2)/zoom,
          zoom: zoomlevel
        }, true);
      }
      
      var changeOpacity = function(ctl, val) {
        if(val == null) val = ctl.value;
        $('#group_opacity').val(val);
        if(!ctl || !ctl.handle) {
          $('#opac_slider').slider('option', 'value', val);
        }
        svgCanvas.setOpacity(val/100);
      }
    
      var changeBlur = function(ctl, val, noUndo) {
        if(val == null) val = ctl.value;
        $('#blur').val(val);
        var complete = false;
        if(!ctl || !ctl.handle) {
          $('#blur_slider').slider('option', 'value', val);
          complete = true;
        }
        if(noUndo) {
          svgCanvas.setBlurNoUndo(val);  
        } else {
          svgCanvas.setBlur(val, complete);
        }
      }
    
      var operaRepaint = function() {
        // Repaints canvas in Opera. Needed for stroke-dasharray change as well as fill change
        if(!window.opera) return;
        $('<p/>').hide().appendTo('body').remove();
      }
    
      $('#stroke_style').change(function(){
        svgCanvas.setStrokeAttr('stroke-dasharray', $(this).val());
        operaRepaint();
      });

      $('#stroke_linejoin').change(function(){
        svgCanvas.setStrokeAttr('stroke-linejoin', $(this).val());
        operaRepaint();
      });

    
      // Lose focus for select elements when changed (Allows keyboard shortcuts to work better)
      $('select').change(function(){$(this).blur();});
    
      // fired when user wants to move elements to another layer
      var promptMoveLayerOnce = false;
      $('#selLayerNames').change(function(){
        var destLayer = this.options[this.selectedIndex].value;
        var confirm_str = uiStrings.QmoveElemsToLayer.replace('%s',destLayer);
        var moveToLayer = function(ok) {
          if(!ok) return;
          promptMoveLayerOnce = true;
          svgCanvas.moveSelectedToLayer(destLayer);
          svgCanvas.clearSelection();
          populateLayers();
        }
        if (destLayer) {
          if(promptMoveLayerOnce) {
            moveToLayer(true);
          } else {
            $.confirm(confirm_str, moveToLayer);
          }
        }
      });
    
      $('#font_family').change(function() {
        svgCanvas.setFontFamily(this.value);
      });
    
      $('#seg_type').change(function() {
        svgCanvas.setSegType($(this).val());
      });
    
      $('#text').keyup(function(){
        svgCanvas.setTextContent(this.value);
      });
      
      $('#image_url').change(function(){
        setImageURL(this.value); 
      });
      
      $('#g_title').change(function() {
        svgCanvas.setGroupTitle(this.value);
        setInputWidth(this);

      });
    
      $('.attr_changer').change(function() {
        var attr = this.getAttribute("data-attr");
        var val = this.value;
        var valid = svgCanvas.isValidUnit(attr, val);
        
        if(!valid) {
          $.alert(uiStrings.invalidAttrValGiven);
          this.value = selectedElement.getAttribute(attr);
          return false;
        }
        // if the user is changing the id, then de-select the element first
        // change the ID, then re-select it with the new ID
        if (attr == "id") {
          var elem = selectedElement;
          svgCanvas.clearSelection();
          elem.id = val;
          svgCanvas.addToSelection([elem],true);
        }
        else {
          svgCanvas.changeSelectedAttribute(attr, val);
        }
      });
      
      // Prevent selection of elements when shift-clicking
      $('#palette').mouseover(function() {
        var inp = $('<input type="hidden">');
        $(this).append(inp);
        inp.focus().remove();
      });
    
      $('.palette_item').click(function(evt){
        var picker = (evt.shiftKey ? "stroke" : "fill");
        var id = (evt.shiftKey ? '#stroke_' : '#fill_');
        var color = $(this).attr('data-rgb');
        var rectbox = document.getElementById("gradbox_"+picker).parentNode.firstChild;
        var paint = null;
    
        // Webkit-based browsers returned 'initial' here for no stroke
        if (color == 'transparent' || color == 'initial') {
          color = 'none';
          $(id + "opacity").html("N/A");
          paint = new $.jGraduate.Paint();
        }
        else {
          paint = new $.jGraduate.Paint({alpha: 100, solidColor: color.substr(1)});
        }
        rectbox.setAttribute("fill", color);
        rectbox.setAttribute("opacity", 1);
        
        if (evt.shiftKey) {
          strokePaint = paint;
          if (svgCanvas.getColor('stroke') != color) {
            svgCanvas.setColor('stroke', color);
          }
          if (color != 'none' && svgCanvas.getStrokeOpacity() != 1) {
            svgCanvas.setPaintOpacity('stroke', 1.0);
          }
        } else {
          fillPaint = paint;
          if (svgCanvas.getColor('fill') != color) {
            svgCanvas.setColor('fill', color);
          }
          if (color != 'none' && svgCanvas.getFillOpacity('fill') != 1) {
            svgCanvas.setPaintOpacity('fill', 1.0);
          }
        }
        updateToolButtonState();
      });
    
      $("#toggle_stroke_tools").toggle(function() {
        $(".stroke_tool").css('display','table-cell');
        $(this).text('<<');
      }, function() {
        $(".stroke_tool").css('display','none');
        $(this).text('>>');
      });
    
      // This is a common function used when a tool has been clicked (chosen)
      // It does several common things:
      // - removes the tool_button_current class from whatever tool currently has it
      // - hides any flyouts
      // - adds the tool_button_current class to the button passed in
      var toolButtonClick = function(button, noHiding) {
        if ($(button).hasClass('disabled')) return false;
        if($(button).parent().hasClass('tools_flyout')) return true;
        var fadeFlyouts = fadeFlyouts || 'normal';
        if(!noHiding) {
          $('.tools_flyout').fadeOut(fadeFlyouts);
        }
        $('#styleoverrides').text('');
        $('.tool_button_current').removeClass('tool_button_current').addClass('tool_button');
        $(button).addClass('tool_button_current').removeClass('tool_button');
        // when a tool is selected, we should deselect any currently selected elements
        if(button !== '#tool_select') {
          svgCanvas.clearSelection();
        }
        return true;
      };
      
      (function() {
        var last_x = null, last_y = null, w_area = workarea[0], 
          panning = false, keypan = false;
        
        $('#svgcanvas').bind('mousemove mouseup', function(evt) {
          if(panning === false) return;

          w_area.scrollLeft -= (evt.clientX - last_x);
          w_area.scrollTop -= (evt.clientY - last_y);
          
          last_x = evt.clientX;
          last_y = evt.clientY;
          
          if(evt.type === 'mouseup') panning = false;
          return false;
        }).mousedown(function(evt) {
          if(evt.button === 1 || keypan === true) {
            panning = true;
            last_x = evt.clientX;
            last_y = evt.clientY;
            return false;
          }
        });
        
        $(window).mouseup(function() {
          panning = false;
        });
        
        $(document).bind('keydown', 'space', function(evt) {
          svgCanvas.spaceKey = keypan = true;
          evt.preventDefault();
        }).bind('keyup', 'space', function(evt) {
          evt.preventDefault();
          svgCanvas.spaceKey = keypan = false;
        });
      }());
      
      
      function setStrokeOpt(opt, changeElem) {
        var id = opt.id;
        var bits = id.split('_');
        var pre = bits[0];
        var val = bits[1];
      
        if(changeElem) {
          svgCanvas.setStrokeAttr('stroke-' + pre, val);
        }
        operaRepaint();
        setIcon('#cur_' + pre , id, 20);
        $(opt).addClass('current').siblings().removeClass('current');
      }
      
      (function() {
        var button = $('#main_icon');
        var overlay = $('#main_icon span');
        var list = $('#main_menu');
        var on_button = false;
        var height = 0;
        var js_hover = true;
        var set_click = false;
        
        var hideMenu = function() {
          list.fadeOut(200);
        };
        
        $(window).mouseup(function(evt) {
          if(!on_button) {
            button.removeClass('buttondown');
            // do not hide if it was the file input as that input needs to be visible 
            // for its change event to fire
            if (evt.target.tagName != "INPUT") {
              list.fadeOut(200);
            } else if(!set_click) {
              set_click = true;
              $(evt.target).click(function() {
                list.css('margin-left','-9999px').show();
              });
            }
          }
          on_button = false;
        }).mousedown(function(evt) {
//           $(".contextMenu").hide();
//           console.log('cm', $(evt.target).closest('.contextMenu'));
        
          var islib = $(evt.target).closest('div.tools_flyout, .contextMenu').length;
          if(!islib) $('.tools_flyout:visible,.contextMenu').fadeOut(250);
        });
        
        overlay.bind('mousedown',function() {
          if (!button.hasClass('buttondown')) {
            button.addClass('buttondown').removeClass('buttonup')
            // Margin must be reset in case it was changed before;
            list.css('margin-left',0).show();
            if(!height) {
              height = list.height();
            }
            // Using custom animation as slideDown has annoying "bounce effect"
            list.css('height',0).animate({
              'height': height
            },200);
            on_button = true;
            return false;
          } else {
            button.removeClass('buttondown').addClass('buttonup');
            list.fadeOut(200);
          }
        }).hover(function() {
          on_button = true;
        }).mouseout(function() {
          on_button = false;
        });
        
        var list_items = $('#main_menu li');
        
        // Check if JS method of hovering needs to be used (Webkit bug)
        list_items.mouseover(function() {
          js_hover = ($(this).css('background-color') == 'rgba(0, 0, 0, 0)');
          
          list_items.unbind('mouseover');
          if(js_hover) {
            list_items.mouseover(function() {
              this.style.backgroundColor = '#FFC';
            }).mouseout(function() {
              this.style.backgroundColor = 'transparent';
              return true;
            });
          }
        });
      }());
      // Made public for UI customization.
      // TODO: Group UI functions into a public svgEditor.ui interface.
      Editor.addDropDown = function(elem, callback, dropUp) {
        var button = $(elem).find('button');
        var list = $(elem).find('ul');
        var on_button = false;
        if(dropUp) {
          $(elem).addClass('dropup');
        }
      
        $(elem).find('li').bind('mouseup', callback);
        
        $(window).mouseup(function(evt) {
          if(!on_button) {
            button.removeClass('down');
            list.hide();
          }
          on_button = false;
        });
        
        button.bind('mousedown',function() {
          if (!button.hasClass('down')) {
            button.addClass('down');
            list.show();
            on_button = true;
          } else {
            button.removeClass('down');
            list.hide();
          }
        }).hover(function() {
          on_button = true;
        }).mouseout(function() {
          on_button = false;
        });
      }
      
      // TODO: Combine this with addDropDown or find other way to optimize
      var addAltDropDown = function(elem, list, callback, opts) {
        var button = $(elem);
        var list = $(list);
        var on_button = false;
        var dropUp = opts.dropUp;
        if(dropUp) {
          $(elem).addClass('dropup');
        }
        list.find('li').bind('mouseup', function() {
          if(opts.seticon) {
            setIcon('#cur_' + button[0].id , $(this).children());
            $(this).addClass('current').siblings().removeClass('current');
          }
          callback.apply(this, arguments);

        });
        
        $(window).mouseup(function(evt) {
          if(!on_button) {
            button.removeClass('down');
            list.hide();
            list.css({top:0, left:0});
          }
          on_button = false;
        });
        
        var height = list.height();
        $(elem).bind('mousedown',function() {
          var off = $(elem).offset();
          if(dropUp) {
            off.top -= list.height();
            off.left += 8;
          } else {
            off.top += $(elem).height();
          }
          $(list).offset(off);
          
          if (!button.hasClass('down')) {
            button.addClass('down');
            list.show();
            on_button = true;
            return false;
          } else {
            button.removeClass('down');
            // CSS position must be reset for Webkit
            list.hide();
            list.css({top:0, left:0});
          }
        }).hover(function() {
          on_button = true;
        }).mouseout(function() {
          on_button = false;
        });
        
        if(opts.multiclick) {
          list.mousedown(function() {
            on_button = true;
          });
        }
      }
      
      Editor.addDropDown('#font_family_dropdown', function() {
        var fam = $(this).text();
        $('#font_family').val($(this).text()).change();
      });
      
      Editor.addDropDown('#opacity_dropdown', function() {
        if($(this).find('div').length) return;
        var perc = parseInt($(this).text().split('%')[0]);
        changeOpacity(false, perc);
      }, true);
      
      // For slider usage, see: http://jqueryui.com/demos/slider/ 
      $("#opac_slider").slider({
        start: function() {
          $('#opacity_dropdown li:not(.special)').hide();
        },
        stop: function() {
          $('#opacity_dropdown li').show();
          $(window).mouseup();
        },
        slide: function(evt, ui){
          changeOpacity(ui);
        }
      });
    
      Editor.addDropDown('#blur_dropdown', function() {
      });
      
      var slideStart = false;
      
      $("#blur_slider").slider({
        max: 10,
        step: .1,
        stop: function(evt, ui) {
          slideStart = false;
          changeBlur(ui);
          $('#blur_dropdown li').show();
          $(window).mouseup();
        },
        start: function() {
          slideStart = true;
        },
        slide: function(evt, ui){
          changeBlur(ui, null, slideStart);
        }
      });

    
      Editor.addDropDown('#zoom_dropdown', function() {
        var item = $(this);
        var val = item.attr('data-val');
        if(val) {
          zoomChanged(window, val);
        } else {
          changeZoom({value:parseInt(item.text())});
        }
      }, true);
      
      addAltDropDown('#stroke_linecap', '#linecap_opts', function() {
        setStrokeOpt(this, true);
      }, {dropUp: true});
      
      addAltDropDown('#stroke_linejoin', '#linejoin_opts', function() {
        setStrokeOpt(this, true);
      }, {dropUp: true});
      
      addAltDropDown('#tool_position', '#position_opts', function() {
        var letter = this.id.replace('tool_pos','').charAt(0);
        svgCanvas.alignSelectedElements(letter, 'page');
      }, {multiclick: true});
      
      /*
      
      When a flyout icon is selected
        (if flyout) {
        - Change the icon
        - Make pressing the button run its stuff
        }
        - Run its stuff
      
      When its shortcut key is pressed
        - If not current in list, do as above
        , else:
        - Just run its stuff
      
      */
      
      // Unfocus text input when workarea is mousedowned.
      (function() {
        var inp;

        var unfocus = function() {
          $(inp).blur();
        }
        
        // Do not include the #text input, as it needs to remain focused 
        // when clicking on an SVG text element.
        $('#svg_editor input:text:not(#text)').focus(function() {
          inp = this;
          workarea.mousedown(unfocus);
        }).blur(function() {
          workarea.unbind('mousedown', unfocus);
          
          // Go back to selecting text if in textedit mode
          if(svgCanvas.getMode() == 'textedit') {
            $('#text').focus();
          }
        });
      }());

      var clickSelect = function() {
        if (toolButtonClick('#tool_select')) {
          svgCanvas.setMode('select');
          $('#styleoverrides').text('#svgcanvas svg *{cursor:move;pointer-events:all}, #svgcanvas svg{cursor:default}');
        }
      };
    
      var clickFHPath = function() {
        if (toolButtonClick('#tool_fhpath')) {
          svgCanvas.setMode('fhpath');
        }
      };
    
      var clickLine = function() {
        if (toolButtonClick('#tool_line')) {
          svgCanvas.setMode('line');
        }
      };
    
      var clickSquare = function(){
        if (toolButtonClick('#tool_square')) {
          svgCanvas.setMode('square');
        }
      };
      
      var clickRect = function(){
        if (toolButtonClick('#tool_rect')) {
          svgCanvas.setMode('rect');
        }
      };
      
      var clickFHRect = function(){
        if (toolButtonClick('#tool_fhrect')) {
          svgCanvas.setMode('fhrect');
        }
      };
      
      var clickCircle = function(){
        if (toolButtonClick('#tool_circle')) {
          svgCanvas.setMode('circle');
        }
      };
    
      var clickEllipse = function(){
        if (toolButtonClick('#tool_ellipse')) {
          svgCanvas.setMode('ellipse');
        }
      };
    
      var clickFHEllipse = function(){
        if (toolButtonClick('#tool_fhellipse')) {
          svgCanvas.setMode('fhellipse');
        }
      };
      
      var clickImage = function(){
        if (toolButtonClick('#tool_image')) {
          svgCanvas.setMode('image');
        }
      };
    
      var clickZoom = function(){
        if (toolButtonClick('#tool_zoom')) {
          workarea.css('cursor','crosshair');
          svgCanvas.setMode('zoom');
        }
      };
    
      var dblclickZoom = function(){
        if (toolButtonClick('#tool_zoom')) {
          zoomImage();
          setSelectMode();
        }
      };
    
      var clickText = function(){
        toolButtonClick('#tool_text');
        svgCanvas.setMode('text');
      };
      
      var clickPath = function(){
        toolButtonClick('#tool_path');
        svgCanvas.setMode('path');
      };
      
      // Delete is a contextual tool that only appears in the ribbon if
      // an element has been selected
      var deleteSelected = function() {
        if (selectedElement != null || multiselected) {
          svgCanvas.deleteSelectedElements();
        }
      };
    
      var cutSelected = function() {
        if (selectedElement != null || multiselected) {
          svgCanvas.cutSelectedElements();
        }
      };
      
      var copySelected = function() {
        if (selectedElement != null || multiselected) {
          svgCanvas.copySelectedElements();
        }
      };
      
      var moveToTopSelected = function() {
        if (selectedElement != null) {
          svgCanvas.moveToTopSelectedElement();
        }
      };
      
      var moveToBottomSelected = function() {
        if (selectedElement != null) {
          svgCanvas.moveToBottomSelectedElement();
        }
      };
      
      var moveUpDownSelected = function(dir) {
        if (selectedElement != null) {
          svgCanvas.moveUpDownSelected(dir);
        }
      };

      var convertToPath = function() {
        if (selectedElement != null) {
          svgCanvas.convertToPath();
        }
      }
      
      var reorientPath = function() {
        if (selectedElement != null) {
          path.reorient();
        }
      }
    
      var moveSelected = function(dx,dy) {
        if (selectedElement != null || multiselected) {
          svgCanvas.moveSelectedElements(dx,dy);
        }
      };
    
      var linkControlPoints = function() {
        var linked = !$('#tool_node_link').hasClass('push_button_pressed');
        if (linked)
          $('#tool_node_link').addClass('push_button_pressed').removeClass('tool_button');
        else
          $('#tool_node_link').removeClass('push_button_pressed').addClass('tool_button');
          
        path.linkControlPoints(linked);
      }
    
      var clonePathNode = function() {
        if (path.getNodePoint()) {
          path.clonePathNode();
        }
      };
      
      var deletePathNode = function() {
        if (path.getNodePoint()) {
          path.deletePathNode();
        }
      };
    
      var addSubPath = function() {
        var button = $('#tool_add_subpath');
        var sp = !button.hasClass('push_button_pressed');
        if (sp) {
          button.addClass('push_button_pressed').removeClass('tool_button');
        } else {
          button.removeClass('push_button_pressed').addClass('tool_button');
        }
        
        path.addSubPath(sp);
        
      };
    
      var opencloseSubPath = function() {
        path.opencloseSubPath();
      }  
      
      var selectNext = function() {
        svgCanvas.cycleElement(1);
      };
      
      var selectPrev = function() {
        svgCanvas.cycleElement(0);
      };
      
      var rotateSelected = function(cw) {
        if (selectedElement == null || multiselected) return;
        var step = 5;
        if(!cw) step *= -1;
        var new_angle = $('#angle').val()*1 + step;
        svgCanvas.setRotationAngle(new_angle);
        updateContextPanel();
      };
      
      var clickClear = function(){
        var dims = curConfig.dimensions;
        $.confirm(uiStrings.QwantToClear, function(ok) {
          if(!ok) return;
          setSelectMode();
          svgCanvas.clear();
          svgCanvas.setResolution(dims[0], dims[1]);
          updateCanvas(true);
          zoomImage();
          populateLayers();
          updateContextPanel();
        });
      };
      
      var clickBold = function(){
        svgCanvas.setBold( !svgCanvas.getBold() );
        updateContextPanel();
        return false;
      };
      
      var clickItalic = function(){
        svgCanvas.setItalic( !svgCanvas.getItalic() );
        updateContextPanel();
        return false;
      };
    
      var clickSave = function(){
        // In the future, more options can be provided here
        var saveOpts = {
          'images': curPrefs.img_save,
          'round_digits': 6
        }
        svgCanvas.save(saveOpts);
      };
      
      var clickExport = function() {
        // Open placeholder window (prevents popup)
        if(!customHandlers.pngsave)  {
          var str = uiStrings.loadingImage;
          exportWindow = window.open("data:text/html;charset=utf-8,<title>" + str + "<\/title><h1>" + str + "<\/h1>");
        }

        if(window.canvg) {
          svgCanvas.rasterExport();
        } else {
          $.getScript('canvg/rgbcolor.js', function() {
            $.getScript('canvg/canvg.js', function() {
              svgCanvas.rasterExport();
            });
          });
        }
      }
      
      // by default, svgCanvas.open() is a no-op.
      // it is up to an extension mechanism (opera widget, etc) 
      // to call setCustomHandlers() which will make it do something
      var clickOpen = function(){
        svgCanvas.open();
      };
      var clickImport = function(){
      };
    
      var clickUndo = function(){
        if (undoMgr.getUndoStackSize() > 0) {
          undoMgr.undo();
          populateLayers();
        }
      };
    
      var clickRedo = function(){
        if (undoMgr.getRedoStackSize() > 0) {
          undoMgr.redo();
          populateLayers();
        }
      };
      
      var clickGroup = function(){
        // group
        if (multiselected) {
          svgCanvas.groupSelectedElements();
        }
        // ungroup
        else if(selectedElement){
          svgCanvas.ungroupSelectedElement();
        }
      };
      
      var clickClone = function(){
        svgCanvas.cloneSelectedElements();
      };
      
      var clickAlign = function() {
        var letter = this.id.replace('tool_align','').charAt(0);
        svgCanvas.alignSelectedElements(letter, $('#align_relative_to').val());
      };
      
      var zoomImage = function(multiplier) {
        var res = svgCanvas.getResolution();
        multiplier = multiplier?res.zoom * multiplier:1;
    //     setResolution(res.w * multiplier, res.h * multiplier, true);
        $('#zoom').val(multiplier * 100);
        svgCanvas.setZoom(multiplier);
        zoomDone();
        updateCanvas(true);
      };
      
      var zoomDone = function() {
    //     updateBgImage();
        updateWireFrame();
        //updateCanvas(); // necessary?
      }
    
      var clickWireframe = function() {
        var wf = !$('#tool_wireframe').hasClass('push_button_pressed');
        if (wf) 
          $('#tool_wireframe').addClass('push_button_pressed').removeClass('tool_button');
        else
          $('#tool_wireframe').removeClass('push_button_pressed').addClass('tool_button');
        workarea.toggleClass('wireframe');
        
        if(supportsNonSS) return;
        var wf_rules = $('#wireframe_rules');
        if(!wf_rules.length) {
          wf_rules = $('<style id="wireframe_rules"><\/style>').appendTo('head');
        } else {
          wf_rules.empty();
        }
        
        updateWireFrame();
      }
      
      var updateWireFrame = function() {
        // Test support
        if(supportsNonSS) return;
    
        var rule = "#workarea.wireframe #svgcontent * { stroke-width: " + 1/svgCanvas.getZoom() + "px; }";
        $('#wireframe_rules').text(workarea.hasClass('wireframe') ? rule : "");
      }
    
      var showSourceEditor = function(e, forSaving){
        if (editingsource) return;
        editingsource = true;
        
        $('#save_output_btns').toggle(!!forSaving);
        $('#tool_source_back').toggle(!forSaving);
        
        var str = svgCanvas.getSvgString();
        $('#svg_source_textarea').val(str);
        $('#svg_source_editor').fadeIn();
        properlySourceSizeTextArea();
        $('#svg_source_textarea').focus();
      };
      
      $('#svg_docprops_container').draggable({cancel:'button,fieldset'});
      
      var showDocProperties = function(){
        if (docprops) return;
        docprops = true;
        
        // This selects the correct radio button by using the array notation
        $('#image_save_opts input').val([curPrefs.img_save]);
        
        // update resolution option with actual resolution
        var res = svgCanvas.getResolution();
        $('#canvas_width').val(res.w);
        $('#canvas_height').val(res.h);
        $('#canvas_title').val(svgCanvas.getDocumentTitle());
        
        // Update background color with current one
        var blocks = $('#bg_blocks div');
        var cur_bg = 'cur_background';
        var canvas_bg = $.pref('bkgd_color');
        var url = $.pref('bkgd_url');
    //     if(url) url = url[1];
        blocks.each(function() {
          var blk = $(this);
          var is_bg = blk.css('background-color') == canvas_bg;
          blk.toggleClass(cur_bg, is_bg);
          if(is_bg) $('#canvas_bg_url').removeClass(cur_bg);
        });
        if(!canvas_bg) blocks.eq(0).addClass(cur_bg);
        if(url) {
          $('#canvas_bg_url').val(url);
        }
        $('grid_snapping_step').attr('value', curConfig.snappingStep);
        if (curConfig.gridSnapping == true) {
            $('#grid_snapping_on').attr('checked', 'checked');
        } else {
            $('#grid_snapping_on').removeAttr('checked');
        }
        
        $('#svg_docprops').fadeIn();
      };
      
      var properlySourceSizeTextArea = function(){
        // TODO: remove magic numbers here and get values from CSS
        var height = $('#svg_source_container').height() - 80;
        $('#svg_source_textarea').css('height', height);
      };
      
      var saveSourceEditor = function(){
        if (!editingsource) return;
    
        var saveChanges = function() {
          svgCanvas.clearSelection();
          hideSourceEditor();
          zoomImage();
          populateLayers();
          setTitle(svgCanvas.getDocumentTitle());
        }
    
        if (!svgCanvas.setSvgString($('#svg_source_textarea').val())) {
          $.confirm(uiStrings.QerrorsRevertToSource, function(ok) {
            if(!ok) return false;
            saveChanges();
          });
        } else {
          saveChanges();
        }
        setSelectMode();    
      };
      
      var setTitle = function(title) {
        var editor_title = $('title:first').text().split(':')[0];
        var new_title = editor_title + (title?': ' + title:'');
        $('title:first').text(new_title);
      }
      
      var saveDocProperties = function(){
        // set title
        var new_title = $('#canvas_title').val();
        setTitle(new_title);
        svgCanvas.setDocumentTitle(new_title);
      
        // update resolution
        var width = $('#canvas_width'), w = width.val();
        var height = $('#canvas_height'), h = height.val();
    
        if(w != "fit" && !svgCanvas.isValidUnit('width', w)) {
          $.alert(uiStrings.invalidAttrValGiven);
          width.parent().addClass('error');
          return false;
        }
        
        width.parent().removeClass('error');
        
        if(h != "fit" && !svgCanvas.isValidUnit('height', h)) {
          $.alert(uiStrings.invalidAttrValGiven);
          height.parent().addClass('error');
          return false;
        } 
        
        height.parent().removeClass('error');
        
        if(!svgCanvas.setResolution(w, h)) {
          $.alert(uiStrings.noContentToFitTo);
          return false;
        }
        
        // set image save option
        curPrefs.img_save = $('#image_save_opts :checked').val();
        $.pref('img_save',curPrefs.img_save);
        
        // set background
        var color = $('#bg_blocks div.cur_background').css('background-color') || '#FFF';
        setBackground(color, $('#canvas_bg_url').val());
        
        // set language
        var lang = $('#lang_select').val();
        if(lang != curPrefs.lang) {
          Editor.putLocale(lang);
        }
        
        // set icon size
        setIconSize($('#iconsize').val());
        
        // set grid setting
        curConfig.gridSnapping = $('#grid_snapping_on')[0].checked;
        curConfig.snappingStep = $('#grid_snapping_step').val();
        svgCanvas.setConfig(curConfig);

        updateCanvas();
        hideDocProperties();
      };
      
      function setBackground(color, url) {
//         if(color == curPrefs.bkgd_color && url == curPrefs.bkgd_url) return;
        $.pref('bkgd_color', color);
        $.pref('bkgd_url', url);
        
        // This should be done in svgcanvas.js for the borderRect fill
        svgCanvas.setBackground(color, url);
      }
      
      var setIcon = Editor.setIcon = function(elem, icon_id, forcedSize) {
        var icon = (typeof icon_id == 'string') ? $.getSvgIcon(icon_id, true) : icon_id;
        if(!icon) {
          console.log('NOTE: Icon image missing: ' + icon_id);
          return;
        }

        $(elem).empty().append(icon);
      }
    
      var ua_prefix;
      (ua_prefix = function() {
        var regex = /^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/;
        var someScript = document.getElementsByTagName('script')[0];
        for(var prop in someScript.style) {
          if(regex.test(prop)) {
            // test is faster than match, so it's better to perform
            // that on the lot and match only when necessary
            return prop.match(regex)[0];
          }
        }
      
        // Nothing found so far?
        if('WebkitOpacity' in someScript.style) return 'Webkit';
        if('KhtmlOpacity' in someScript.style) return 'Khtml';
        
        return '';
      }());
      
      var scaleElements = function(elems, scale) {
        var prefix = '-' + ua_prefix.toLowerCase() + '-';
        
        var sides = ['top', 'left', 'bottom', 'right'];
      
        elems.each(function() {
//           console.log('go', scale);

          // Handled in CSS
          // this.style[ua_prefix + 'Transform'] = 'scale(' + scale + ')';
        
          var el = $(this);
          
          var w = el.outerWidth() * (scale - 1);
          var h = el.outerHeight() * (scale - 1);
          var margins = {};
          
          for(var i = 0; i < 4; i++) {
            var s = sides[i];
            
            var cur = el.data('orig_margin-' + s);
            if(cur == null) {
              cur = parseInt(el.css('margin-' + s));
              // Cache the original margin
              el.data('orig_margin-' + s, cur);
            }
            var val = cur * scale;
            if(s === 'right') {
              val += w;
            } else if(s === 'bottom') {
              val += h;
            }
            
            el.css('margin-' + s, val);
//             el.css('outline', '1px solid red');
          }
        });
      }
      
      var setIconSize = Editor.setIconSize = function(size, force) {
        if(size == curPrefs.size && !force) return;
//         return;
//         var elems = $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open');
        console.log('size', size);
        
        var sel_toscale = '#tools_top .toolset, #editor_panel > *, #history_panel > *,\
        #main_button, #tools_left > *, #path_node_panel > *, #multiselected_panel > *,\
        #g_panel > *, #tool_font_size > *, .tools_flyout';
        
        var elems = $(sel_toscale);
        
        var scale = 1;
        
        if(typeof size == 'number') {
          scale = size;
        } else {
          var icon_sizes = { s:.75, m:1, l:1.25, xl:1.5 };
          scale = icon_sizes[size];
        }
        
        Editor.tool_scale = tool_scale = scale;
        
        setFlyoutPositions();
        // $('.tools_flyout').each(function() {
//           var pos = $(this).position();
//           console.log($(this),  pos.left+(34 * scale));
//           $(this).css({'left': pos.left+(34 * scale), 'top': pos.top+(77 * scale)});
//           console.log('l', $(this).css('left'));
//         });

//         var scale = .75;//0.75;
        
        var hidden_ps = elems.parents(':hidden');
        hidden_ps.css('visibility', 'hidden').show();
        scaleElements(elems, scale);
        hidden_ps.css('visibility', 'visible').hide();
//         console.timeEnd('elems');                
//         return;
        
        $.pref('iconsize', size);
        $('#iconsize').val(size);
        
        
        // Change icon size
//         $('.tool_button, .push_button, .tool_button_current, .disabled, .icon_label, #url_notice, #tool_open')
//         .find('> svg, > img').each(function() {
//           this.setAttribute('width',size_num);
//           this.setAttribute('height',size_num);
//         });
//         
//         $.resizeSvgIcons({
//           '.flyout_arrow_horiz > svg, .flyout_arrow_horiz > img': size_num / 5,
//           '#logo > svg, #logo > img': size_num * 1.3,
//           '#tools_bottom .icon_label > *': (size_num === 16 ? 18 : size_num * .75)
//         });
//         if(size != 's') {
//           $.resizeSvgIcons({'#layerbuttons svg, #layerbuttons img': size_num * .6});
//         }
        
        // Note that all rules will be prefixed with '#svg_editor' when parsed
        var cssResizeRules = {
//           ".tool_button,\
//           .push_button,\
//           .tool_button_current,\
//           .push_button_pressed,\
//           .disabled,\
//           .icon_label,\
//           .tools_flyout .tool_button": {
//             'width': {s: '16px', l: '32px', xl: '48px'},
//             'height': {s: '16px', l: '32px', xl: '48px'},
//             'padding': {s: '1px', l: '2px', xl: '3px'}
//           },
//           ".tool_sep": {
//             'height': {s: '16px', l: '32px', xl: '48px'},
//             'margin': {s: '2px 2px', l: '2px 5px', xl: '2px 8px'}
//           },
//           "#main_icon": {
//             'width': {s: '31px', l: '53px', xl: '75px'},
//             'height': {s: '22px', l: '42px', xl: '64px'}
//           },
          "#tools_top": {
            'left': 50,
            'height': 72
          },
          "#tools_left": {
            'width': 31,
            'top': 74
          },
          "div#workarea": {
            'left': 38,
            'top': 74
          },
//           "#tools_bottom": {
//             'left': {s: '27px', l: '46px', xl: '65px'},
//             'height': {s: '58px', l: '98px', xl: '145px'}
//           },
//           "#color_tools": {
//             'border-spacing': {s: '0 1px'},
//             'margin-top': {s: '-1px'}
//           },
//           "#color_tools .icon_label": {
//             'width': {l:'43px', xl: '60px'}
//           },
//           ".color_tool": {
//             'height': {s: '20px'}
//           },
//           "#tool_opacity": {
//             'top': {s: '1px'},
//             'height': {s: 'auto', l:'auto', xl:'auto'}
//           },
//           "#tools_top input, #tools_bottom input": {
//             'margin-top': {s: '2px', l: '4px', xl: '5px'},
//             'height': {s: 'auto', l: 'auto', xl: 'auto'},
//             'border': {s: '1px solid #555', l: 'auto', xl: 'auto'},
//             'font-size': {s: '.9em', l: '1.2em', xl: '1.4em'}
//           },
//           "#zoom_panel": {
//             'margin-top': {s: '3px', l: '4px', xl: '5px'}
//           },
//           "#copyright, #tools_bottom .label": {
//             'font-size': {l: '1.5em', xl: '2em'},
//             'line-height': {s: '15px'}
//           },
//           "#tools_bottom_2": {
//             'width': {l: '295px', xl: '355px'},
//             'top': {s: '4px'}
//           },
//           "#tools_top > div, #tools_top": {
//             'line-height': {s: '17px', l: '34px', xl: '50px'}
//           }, 
//           ".dropdown button": {
//             'height': {s: '18px', l: '34px', xl: '40px'},
//             'line-height': {s: '18px', l: '34px', xl: '40px'},
//             'margin-top': {s: '3px'}
//           },
//           "#tools_top label, #tools_bottom label": {
//             'font-size': {s: '1em', l: '1.5em', xl: '2em'},
//             'height': {s: '25px', l: '42px', xl: '64px'}
//           }, 
//           "div.toolset": {
//             'height': {s: '25px', l: '42px', xl: '64px'}
//           },
//           "#tool_bold, #tool_italic": {
//             'font-size': {s: '1.5em', l: '3em', xl: '4.5em'}
//           },
//           "#sidepanels": {
//             'top': {s: '50px', l: '88px', xl: '125px'},
//             'bottom': {s: '51px', l: '68px', xl: '65px'}
//           },
//           '#layerbuttons': {
//             'width': {l: '130px', xl: '175px'},
//             'height': {l: '24px', xl: '30px'}
//           },
//           '#layerlist': {
//             'width': {l: '128px', xl: '150px'}
//           },      
//           '.layer_button': {
//             'width': {l: '19px', xl: '28px'},
//             'height': {l: '19px', xl: '28px'}
//           },
//           "input.spin-button": {
//             'background-image': {l: "url('images/spinbtn_updn_big.png')", xl: "url('images/spinbtn_updn_big.png')"},
//             'background-position': {l: '100% -5px', xl: '100% -2px'},
//             'padding-right': {l: '24px', xl: '24px' }
//           },
//           "input.spin-button.up": {
//             'background-position': {l: '100% -45px', xl: '100% -42px'}
//           },
//           "input.spin-button.down": {
//             'background-position': {l: '100% -85px', xl: '100% -82px'}
//           },
//           "#position_opts": {
//             'width': {all: (size_num*4) +'px'}
//           }
        };
        
        var rule_elem = $('#tool_size_rules');
        if(!rule_elem.length) {
          rule_elem = $('<style id="tool_size_rules"><\/style>').appendTo('head');
        } else {
          rule_elem.empty();
        }
        
        if(size != 'm') {
          var style_str = '';
          $.each(cssResizeRules, function(selector, rules) {
            selector = '#svg_editor ' + selector.replace(/,/g,', #svg_editor');
            style_str += selector + '{';
            $.each(rules, function(prop, values) {
              if(typeof values === 'number') {
                var val = (values * scale) + 'px';
              } else if(values[size] || values.all) {
                var val = (values[size] || values.all);
              }
              style_str += (prop + ':' + val + ';');
            });
            style_str += '}';
          });
          //this.style[ua_prefix + 'Transform'] = 'scale(' + scale + ')';
          var prefix = '-' + ua_prefix.toLowerCase() + '-';
          style_str += (sel_toscale + '{' + prefix + 'transform: scale(' + scale + ');}'
          + ' #svg_editor div.toolset .toolset {' + prefix + 'transform: scale(1); margin: 1px !important;}' // Hack for markers
          + ' #svg_editor .ui-slider {' + prefix + 'transform: scale(' + (1/scale) + ');}' // Hack for sliders
          );
          rule_elem.text(style_str);
        }
        
        setFlyoutPositions();
      }
    
      var cancelOverlays = function() {
        $('#dialog_box').hide();
        if (!editingsource && !docprops) return;
    
        if (editingsource) {
          var oldString = svgCanvas.getSvgString();
          if (oldString != $('#svg_source_textarea').val()) {
            $.confirm(uiStrings.QignoreSourceChanges, function(ok) {
              if(ok) hideSourceEditor();
            });
          } else {
            hideSourceEditor();
          }
        }
        else if (docprops) {
          hideDocProperties();
        }
    
      };
    
      var hideSourceEditor = function(){
        $('#svg_source_editor').hide();
        editingsource = false;
        $('#svg_source_textarea').blur();
      };
      
      var hideDocProperties = function(){
        $('#svg_docprops').hide();
        $('#canvas_width,#canvas_height').removeAttr('disabled');
        $('#resolution')[0].selectedIndex = 0;
        $('#image_save_opts input').val([curPrefs.img_save]);
        docprops = false;
      };

      var win_wh = {width:$(window).width(), height:$(window).height()};
      
      $(window).resize(function(evt) {
        if (editingsource) {
          properlySourceSizeTextArea();
        }
        
        $.each(win_wh, function(type, val) {
          var curval = $(window)[type]();
          workarea[0]['scroll' + (type==='width'?'Left':'Top')] -= (curval - val)/2;
          win_wh[type] = curval;
        });
      });
      
      $('#url_notice').click(function() {
        $.alert(this.title);
      });
      
      $('#change_image_url').click(promptImgURL);
      
      function promptImgURL() {
        var curhref = svgCanvas.getHref(selectedElement);
        curhref = curhref.indexOf("data:") === 0?"":curhref;
        $.prompt(uiStrings.enterNewImgURL, curhref, function(url) {
          if(url) setImageURL(url);
        });
      }
    
      // added these event handlers for all the push buttons so they
      // behave more like buttons being pressed-in and not images
      (function() {
        var toolnames = ['clear','open','save','source','delete','delete_multi','paste','clone','clone_multi','move_top','move_bottom'];
        var all_tools = '';
        var cur_class = 'tool_button_current';
        
        $.each(toolnames, function(i,item) {
          all_tools += '#tool_' + item + (i==toolnames.length-1?',':'');
        });
        
        $(all_tools).mousedown(function() {
          $(this).addClass(cur_class);
        }).bind('mousedown mouseout', function() {
          $(this).removeClass(cur_class);
        });
        
        $('#tool_undo, #tool_redo').mousedown(function(){ 
          if (!$(this).hasClass('disabled')) $(this).addClass(cur_class);
        }).bind('mousedown mouseout',function(){
          $(this).removeClass(cur_class);}
        );
      }());
    
      // switch modifier key in tooltips if mac
      // NOTE: This code is not used yet until I can figure out how to successfully bind ctrl/meta
      // in Opera and Chrome
      if (isMac) {
        var shortcutButtons = ["tool_clear", "tool_save", "tool_source", "tool_undo", "tool_redo", "tool_clone"];
        var i = shortcutButtons.length;
        while (i--) {
          var button = document.getElementById(shortcutButtons[i]);
          if (button != null) {
            var title = button.title;
            var index = title.indexOf("Ctrl+");
            button.title = [title.substr(0, index), "Cmd+", title.substr(index + 5)].join('');
          }
        }
      }
      
      // TODO: go back to the color boxes having white background-color and then setting
      //       background-image to none.png (otherwise partially transparent gradients look weird)  
      var colorPicker = function(elem) {
        var picker = elem.attr('id') == 'stroke_color' ? 'stroke' : 'fill';
//         var opacity = (picker == 'stroke' ? $('#stroke_opacity') : $('#fill_opacity'));
        var paint = (picker == 'stroke' ? strokePaint : fillPaint);
        var title = (picker == 'stroke' ? 'Pick a Stroke Paint and Opacity' : 'Pick a Fill Paint and Opacity');
        var was_none = false;
        var pos = elem.position();
        $("#color_picker")
          .draggable({cancel:'.jPicker_table,.jGraduate_lgPick,.jGraduate_rgPick'})
          .css(curConfig.colorPickerCSS || {'left': pos.left, 'bottom': 50 - pos.top})
          .jGraduate(
          { 
            paint: paint,
            window: { pickerTitle: title },
            images: { clientPath: curConfig.jGraduatePath }
          },
          function(p) {
            paint = new $.jGraduate.Paint(p);
            
            var oldgrad = document.getElementById("gradbox_"+picker);
            var svgbox = oldgrad.parentNode;
            var rectbox = svgbox.firstChild;
            if (paint.type == "linearGradient" || paint.type == "radialGradient") {
              svgbox.removeChild(oldgrad);
              var newgrad = svgbox.appendChild(document.importNode(paint[paint.type], true));
              newgrad.id = "gradbox_"+picker;
              rectbox.setAttribute("fill", "url(#gradbox_" + picker + ")");
              rectbox.setAttribute("opacity", paint.alpha/100);
            }
            else {
              rectbox.setAttribute("fill", paint.solidColor != "none" ? "#" + paint.solidColor : "none");
              rectbox.setAttribute("opacity", paint.alpha/100);
            }
    
            if (picker == 'stroke') {
              svgCanvas.setPaint('stroke', paint);
              strokePaint = paint;
            }
            else {
              svgCanvas.setPaint('fill', paint);
              fillPaint = paint;
            }
            updateToolbar();
            $('#color_picker').hide();
          },
          function(p) {
            $('#color_picker').hide();
          });
      };
    
      var updateToolButtonState = function() {
        var bNoFill = (svgCanvas.getColor('fill') == 'none');
        var bNoStroke = (svgCanvas.getColor('stroke') == 'none');
        var buttonsNeedingStroke = [ '#tool_fhpath', '#tool_line' ];
        var buttonsNeedingFillAndStroke = [ '#tools_rect .tool_button', '#tools_ellipse .tool_button', '#tool_text', '#tool_path'];
        if (bNoStroke) {
          for (index in buttonsNeedingStroke) {
            var button = buttonsNeedingStroke[index];
            if ($(button).hasClass('tool_button_current')) {
              clickSelect();
            }
            $(button).addClass('disabled');
          }
        }
        else {
          for (index in buttonsNeedingStroke) {
            var button = buttonsNeedingStroke[index];
            $(button).removeClass('disabled');
          }
        }
    
        if (bNoStroke && bNoFill) {
          for (index in buttonsNeedingFillAndStroke) {
            var button = buttonsNeedingFillAndStroke[index];
            if ($(button).hasClass('tool_button_current')) {
              clickSelect();
            }
            $(button).addClass('disabled');
          }
        }
        else {
          for (index in buttonsNeedingFillAndStroke) {
            var button = buttonsNeedingFillAndStroke[index];
            $(button).removeClass('disabled');
          }
        }
        
        svgCanvas.runExtensions("toolButtonStateUpdate", {
          nofill: bNoFill,
          nostroke: bNoStroke
        });
        
        // Disable flyouts if all inside are disabled
        $('.tools_flyout').each(function() {
          var shower = $('#' + this.id + '_show');
          var has_enabled = false;
          $(this).children().each(function() {
            if(!$(this).hasClass('disabled')) {
              has_enabled = true;
            }
          });
          shower.toggleClass('disabled', !has_enabled);
        });
    
        operaRepaint();
      };
      
      // set up gradients to be used for the buttons
      var svgdocbox = new DOMParser().parseFromString(
        '<svg xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%"\
        fill="#' + curConfig.initFill.color + '" opacity="' + curConfig.initFill.opacity + '"/>\
        <linearGradient id="gradbox_">\
            <stop stop-color="#000" offset="0.0"/>\
            <stop stop-color="#FF0000" offset="1.0"/>\
        </linearGradient></svg>', 'text/xml');
      var docElem = svgdocbox.documentElement;


      var boxgrad = svgdocbox.getElementById('gradbox_');
      boxgrad.id = 'gradbox_fill';
      docElem.setAttribute('width',16.5);
      $('#fill_color').append( document.importNode(docElem,true) );
      
      boxgrad.id = 'gradbox_stroke';  
      docElem.setAttribute('width',16.5);
      $('#stroke_color').append( document.importNode(docElem,true) );
      $('#stroke_color rect').attr({
        'fill': '#' + curConfig.initStroke.color,
        'opacity': curConfig.initStroke.opacity
      });
      
      $('#stroke_width').val(curConfig.initStroke.width);
      $('#group_opacity').val(curConfig.initOpacity * 100);
      
      // Use this SVG elem to test vectorEffect support
      var test_el = docElem.firstChild;
      test_el.setAttribute('style','vector-effect:non-scaling-stroke');
      var supportsNonSS = (test_el.style.vectorEffect == 'non-scaling-stroke');
      test_el.removeAttribute('style');
      
      // Use this to test support for blur element. Seems to work to test support in Webkit
      var blur_test = svgdocbox.createElementNS('http://www.w3.org/2000/svg', 'feGaussianBlur');
      if(typeof blur_test.stdDeviationX === "undefined") {
        $('#tool_blur').hide();
      }
      $(blur_test).remove();
      
      // Test for embedImage support (use timeout to not interfere with page load)
      setTimeout(function() {
        svgCanvas.embedImage('images/logo.png', function(datauri) {
          if(!datauri) {
            // Disable option
            $('#image_save_opts [value=embed]').attr('disabled','disabled');
            $('#image_save_opts input').val(['ref']);
            curPrefs.img_save = 'ref';
            $('#image_opt_embed').css('color','#666').attr('title',uiStrings.featNotSupported);
          }
        });
      },1000);
        
      $('#fill_color, #tool_fill .icon_label').click(function(){
        colorPicker($('#fill_color'));
        updateToolButtonState();
      });
    
      $('#stroke_color, #tool_stroke .icon_label').click(function(){
        colorPicker($('#stroke_color'));
        updateToolButtonState();
      });
      
      $('#group_opacityLabel').click(function() {
        $('#opacity_dropdown button').mousedown();
        $(window).mouseup();
      });
      
      $('#zoomLabel').click(function() {
        $('#zoom_dropdown button').mousedown();
        $(window).mouseup();
      });
      
      $('#tool_move_top').mousedown(function(evt){
        $('#tools_stacking').show();
        evt.preventDefault();
      });
      
      $('.layer_button').mousedown(function() { 
        $(this).addClass('layer_buttonpressed');
      }).mouseout(function() {
        $(this).removeClass('layer_buttonpressed');
      }).mouseup(function() {
        $(this).removeClass('layer_buttonpressed');
      });
    
      $('.push_button').mousedown(function() { 
        if (!$(this).hasClass('disabled')) {
          $(this).addClass('push_button_pressed').removeClass('push_button');
        }
      }).mouseout(function() {
        $(this).removeClass('push_button_pressed').addClass('push_button');
      }).mouseup(function() {
        $(this).removeClass('push_button_pressed').addClass('push_button');
      });
      
      $('#layer_new').click(function() {
        var i = svgCanvas.getNumLayers();
        do {
          var uniqName = uiStrings.layer + " " + ++i;
        } while(svgCanvas.hasLayer(uniqName));
        
        $.prompt(uiStrings.enterUniqueLayerName,uniqName, function(newName) {
          if (!newName) return;
          if (svgCanvas.hasLayer(newName)) {
            $.alert(uiStrings.dupeLayerName);
            return;
          }
          svgCanvas.createLayer(newName);
          updateContextPanel();
          populateLayers();
        });
      });
      
      function deleteLayer() {
        if (svgCanvas.deleteCurrentLayer()) {
          updateContextPanel();
          populateLayers();
          // This matches what SvgCanvas does
          // TODO: make this behavior less brittle (svg-editor should get which
          // layer is selected from the canvas and then select that one in the UI)
          $('#layerlist tr.layer').removeClass("layersel");
          $('#layerlist tr.layer:first').addClass("layersel");
        }
      }
      
      function cloneLayer() {
        var name = svgCanvas.getCurrentLayer() + ' copy';
        
        $.prompt(uiStrings.enterUniqueLayerName, name, function(newName) {
          if (!newName) return;
          if (svgCanvas.hasLayer(newName)) {
            $.alert(uiStrings.dupeLayerName);
            return;
          }
          svgCanvas.cloneLayer(newName);
          updateContextPanel();
          populateLayers();
        });
      }
      
      function mergeLayer() {
        if($('#layerlist tr.layersel').index() == svgCanvas.getNumLayers()-1) return;
        svgCanvas.mergeLayer();
        updateContextPanel();
        populateLayers();
      }
      
      function moveLayer(pos) {
        var curIndex = $('#layerlist tr.layersel').index();
        var total = svgCanvas.getNumLayers();
        if(curIndex > 0 || curIndex < total-1) {
          curIndex += pos;
          svgCanvas.setCurrentLayerPosition(total-curIndex-1);
          populateLayers();
        }
      }
    
      $('#layer_delete').click(deleteLayer);
      
      $('#layer_up').click(function() {
        moveLayer(-1);
      });
    
      $('#layer_down').click(function() {
        moveLayer(1);
      });
    
      $('#layer_rename').click(function() {
        var curIndex = $('#layerlist tr.layersel').prevAll().length;
        var oldName = $('#layerlist tr.layersel td.layername').text();
        $.prompt(uiStrings.enterNewLayerName,"", function(newName) {
          if (!newName) return;
          if (oldName == newName || svgCanvas.hasLayer(newName)) {
            $.alert(uiStrings.layerHasThatName);
            return;
          }
          
          svgCanvas.renameCurrentLayer(newName);
          populateLayers();
        });
      });
      
      var SIDEPANEL_MAXWIDTH = 300;
      var SIDEPANEL_OPENWIDTH = 150;
      var sidedrag = -1, sidedragging = false, allowmove = false;
        
      var resizePanel = function(evt) {
        if (!allowmove) return;
        if (sidedrag == -1) return;
        sidedragging = true;
        var deltax = sidedrag - evt.pageX;
        
        var sidepanels = $('#sidepanels');
        var sidewidth = parseInt(sidepanels.css('width'));
        if (sidewidth+deltax > SIDEPANEL_MAXWIDTH) {
          deltax = SIDEPANEL_MAXWIDTH - sidewidth;
          sidewidth = SIDEPANEL_MAXWIDTH;
        }
        else if (sidewidth+deltax < 2) {
          deltax = 2 - sidewidth;
          sidewidth = 2;
        }
  
        if (deltax == 0) return;
        sidedrag -= deltax;
  
        var layerpanel = $('#layerpanel');
        workarea.css('right', parseInt(workarea.css('right'))+deltax);
        sidepanels.css('width', parseInt(sidepanels.css('width'))+deltax);
        layerpanel.css('width', parseInt(layerpanel.css('width'))+deltax);
      }
      
      $('#sidepanel_handle')
        .mousedown(function(evt) {
          sidedrag = evt.pageX;
          $(window).mousemove(resizePanel);
          allowmove = false;
          // Silly hack for Chrome, which always runs mousemove right after mousedown
          setTimeout(function() {
            allowmove = true;
          }, 20);
        })
        .mouseup(function(evt) {
          if (!sidedragging) toggleSidePanel();
          sidedrag = -1;
          sidedragging = false;
        });

      $(window).mouseup(function() {
        sidedrag = -1;
        sidedragging = false;
        $('#svg_editor').unbind('mousemove', resizePanel);
      });
      
      // if width is non-zero, then fully close it, otherwise fully open it
      // the optional close argument forces the side panel closed
      var toggleSidePanel = function(close){
        var w = parseInt($('#sidepanels').css('width'));
        var deltax = (w > 2 || close ? 2 : SIDEPANEL_OPENWIDTH) - w;
        var sidepanels = $('#sidepanels');
        var layerpanel = $('#layerpanel');
        workarea.css('right', parseInt(workarea.css('right'))+deltax);
        sidepanels.css('width', parseInt(sidepanels.css('width'))+deltax);
        layerpanel.css('width', parseInt(layerpanel.css('width'))+deltax);
      };
      
      // this function highlights the layer passed in (by fading out the other layers)
      // if no layer is passed in, this function restores the other layers
      var toggleHighlightLayer = function(layerNameToHighlight) {
        var curNames = new Array(svgCanvas.getNumLayers());
        for (var i = 0; i < curNames.length; ++i) { curNames[i] = svgCanvas.getLayer(i); }
      
        if (layerNameToHighlight) {
          for (var i = 0; i < curNames.length; ++i) {
            if (curNames[i] != layerNameToHighlight) {
              svgCanvas.setLayerOpacity(curNames[i], 0.5);
            }
          }
        }
        else {
          for (var i = 0; i < curNames.length; ++i) {
            svgCanvas.setLayerOpacity(curNames[i], 1.0);
          }
        }
      };
    
      var populateLayers = function(){
        var layerlist = $('#layerlist tbody');
        var selLayerNames = $('#selLayerNames');
        layerlist.empty();
        selLayerNames.empty();
        var currentlayer = svgCanvas.getCurrentLayer();
        var layer = svgCanvas.getNumLayers();
        var icon = $.getSvgIcon('eye');
        // we get the layers in the reverse z-order (the layer rendered on top is listed first)
        while (layer--) {
          var name = svgCanvas.getLayer(layer);
          // contenteditable=\"true\"
          var appendstr = "<tr class=\"layer";
          if (name == currentlayer) {
            appendstr += " layersel"
          }
          appendstr += "\">";
          
          if (svgCanvas.getLayerVisibility(name)) {
            appendstr += "<td class=\"layervis\"/><td class=\"layername\" >" + name + "</td></tr>";
          }
          else {
            appendstr += "<td class=\"layervis layerinvis\"/><td class=\"layername\" >" + name + "</td></tr>";
          }
          layerlist.append(appendstr);
          selLayerNames.append("<option value=\"" + name + "\">" + name + "</option>");
        }
        if(icon !== undefined) {
          var copy = icon.clone();
          $('td.layervis',layerlist).append(icon.clone());
          $.resizeSvgIcons({'td.layervis .svg_icon':14});
        }
        // handle selection of layer
        $('#layerlist td.layername')
          .mouseup(function(evt){
            $('#layerlist tr.layer').removeClass("layersel");
            var row = $(this.parentNode);
            row.addClass("layersel");
            svgCanvas.setCurrentLayer(this.textContent);
            evt.preventDefault();
          })
          .mouseover(function(evt){
            $(this).css({"font-style": "italic", "color":"blue"});
            toggleHighlightLayer(this.textContent);
          })
          .mouseout(function(evt){
            $(this).css({"font-style": "normal", "color":"black"});
            toggleHighlightLayer();
          });
        $('#layerlist td.layervis').click(function(evt){
          var row = $(this.parentNode).prevAll().length;
          var name = $('#layerlist tr.layer:eq(' + row + ') td.layername').text();
          var vis = $(this).hasClass('layerinvis');
          svgCanvas.setLayerVisibility(name, vis);
          if (vis) {
            $(this).removeClass('layerinvis');
          }
          else {
            $(this).addClass('layerinvis');
          }
        });
        
        // if there were too few rows, let's add a few to make it not so lonely
        var num = 5 - $('#layerlist tr.layer').size();
        while (num-- > 0) {
          // FIXME: there must a better way to do this
          layerlist.append("<tr><td style=\"color:white\">_</td><td/></tr>");
        }
      };
      populateLayers();
    
    //   function changeResolution(x,y) {
    //     var zoom = svgCanvas.getResolution().zoom;
    //     setResolution(x * zoom, y * zoom);
    //   }
      
      var centerCanvas = function() {
        // this centers the canvas vertically in the workarea (horizontal handled in CSS)
        workarea.css('line-height', workarea.height() + 'px');
      };
      
      $(window).bind('load resize', centerCanvas);
    
      function stepFontSize(elem, step) {
        var orig_val = elem.value-0;
        var sug_val = orig_val + step;
        var increasing = sug_val >= orig_val;
        if(step === 0) return orig_val;
        
        if(orig_val >= 24) {
          if(increasing) {
            return Math.round(orig_val * 1.1);
          } else {
            return Math.round(orig_val / 1.1);
          }
        } else if(orig_val <= 1) {
          if(increasing) {
            return orig_val * 2;      
          } else {
            return orig_val / 2;
          }
        } else {
          return sug_val;
        }
      }
      
      function stepZoom(elem, step) {
        var orig_val = elem.value-0;
        if(orig_val === 0) return 100;
        var sug_val = orig_val + step;
        if(step === 0) return orig_val;
        
        if(orig_val >= 100) {
          return sug_val;
        } else {
          if(sug_val >= orig_val) {
            return orig_val * 2;
          } else {
            return orig_val / 2;
          }
        }
      }
      
    //   function setResolution(w, h, center) {
    //     updateCanvas();
    // //     w-=0; h-=0;
    // //     $('#svgcanvas').css( { 'width': w, 'height': h } );
    // //     $('#canvas_width').val(w);
    // //     $('#canvas_height').val(h);
    // // 
    // //     if(center) {
    // //       var w_area = workarea;
    // //       var scroll_y = h/2 - w_area.height()/2;
    // //       var scroll_x = w/2 - w_area.width()/2;
    // //       w_area[0].scrollTop = scroll_y;
    // //       w_area[0].scrollLeft = scroll_x;
    // //     }
    //   }
    
      $('#resolution').change(function(){
        var wh = $('#canvas_width,#canvas_height');
        if(!this.selectedIndex) {
          if($('#canvas_width').val() == 'fit') {
            wh.removeAttr("disabled").val(100);
          }
        } else if(this.value == 'content') {
          wh.val('fit').attr("disabled","disabled");
        } else {
          var dims = this.value.split('x');
          $('#canvas_width').val(dims[0]);
          $('#canvas_height').val(dims[1]);
          wh.removeAttr("disabled");
        }
      });
    
      //Prevent browser from erroneously repopulating fields
      $('input,select').attr("autocomplete","off");
      
      // Associate all button actions as well as non-button keyboard shortcuts
      var Actions = function() {
        // sel:'selector', fn:function, evt:'event', key:[key, preventDefault, NoDisableInInput]
        var tool_buttons = [
          {sel:'#tool_select', fn: clickSelect, evt: 'click', key: 1},
          {sel:'#tool_fhpath', fn: clickFHPath, evt: 'click', key: 2},
          {sel:'#tool_line', fn: clickLine, evt: 'click', key: 3},
          {sel:'#tool_rect', fn: clickRect, evt: 'mouseup', key: 4, parent: '#tools_rect', icon: 'rect'},
          {sel:'#tool_square', fn: clickSquare, evt: 'mouseup', key: 'Shift+4', parent: '#tools_rect', icon: 'square'},
          {sel:'#tool_fhrect', fn: clickFHRect, evt: 'mouseup', parent: '#tools_rect', icon: 'fh_rect'},
          {sel:'#tool_ellipse', fn: clickEllipse, evt: 'mouseup', key: 5, parent: '#tools_ellipse', icon: 'ellipse'},
          {sel:'#tool_circle', fn: clickCircle, evt: 'mouseup', key: 'Shift+5', parent: '#tools_ellipse', icon: 'circle'},
          {sel:'#tool_fhellipse', fn: clickFHEllipse, evt: 'mouseup', parent: '#tools_ellipse', icon: 'fh_ellipse'},
          {sel:'#tool_path', fn: clickPath, evt: 'click', key: 6},
          {sel:'#tool_text', fn: clickText, evt: 'click', key: 7},
          {sel:'#tool_image', fn: clickImage, evt: 'mouseup', key: 8},
          {sel:'#tool_zoom', fn: clickZoom, evt: 'mouseup', key: 9},
          {sel:'#tool_clear', fn: clickClear, evt: 'mouseup', key: ['N', true]},
          {sel:'#tool_save', fn: function() { editingsource?saveSourceEditor():clickSave()}, evt: 'mouseup', key: ['S', true]},
          {sel:'#tool_export', fn: clickExport, evt: 'mouseup'},
          {sel:'#tool_open', fn: clickOpen, evt: 'mouseup', key: ['O', true]},
          {sel:'#tool_import', fn: clickImport, evt: 'mouseup'},
          {sel:'#tool_source', fn: showSourceEditor, evt: 'click', key: ['U', true]},
          {sel:'#tool_wireframe', fn: clickWireframe, evt: 'click', key: ['F', true]},
          {sel:'#tool_source_cancel,#svg_source_overlay,#tool_docprops_cancel', fn: cancelOverlays, evt: 'click', key: ['esc', false, false], hidekey: true},
          {sel:'#tool_source_save', fn: saveSourceEditor, evt: 'click'},
          {sel:'#tool_docprops_save', fn: saveDocProperties, evt: 'click'},
          {sel:'#tool_docprops', fn: showDocProperties, evt: 'mouseup', key: ['P', true]},
          {sel:'#tool_delete,#tool_delete_multi', fn: deleteSelected, evt: 'click', key: ['del/backspace', true]},
          {sel:'#tool_reorient', fn: reorientPath, evt: 'click'},
          {sel:'#tool_node_link', fn: linkControlPoints, evt: 'click'},
          {sel:'#tool_node_clone', fn: clonePathNode, evt: 'click'},
          {sel:'#tool_node_delete', fn: deletePathNode, evt: 'click'},
          {sel:'#tool_openclose_path', fn: opencloseSubPath, evt: 'click'},
          {sel:'#tool_add_subpath', fn: addSubPath, evt: 'click'},
          {sel:'#tool_move_top', fn: moveToTopSelected, evt: 'click', key: 'shift+up'},
          {sel:'#tool_move_bottom', fn: moveToBottomSelected, evt: 'click', key: 'shift+down'},
          {sel:'#tool_topath', fn: convertToPath, evt: 'click'},
          {sel:'#tool_undo', fn: clickUndo, evt: 'click', key: ['Z', true]},
          {sel:'#tool_redo', fn: clickRedo, evt: 'click', key: ['Y', true]},
          {sel:'#tool_clone,#tool_clone_multi', fn: clickClone, evt: 'click', key: ['C', true]},
          {sel:'#tool_group', fn: clickGroup, evt: 'click', key: ['G', true]},
          {sel:'#tool_ungroup', fn: clickGroup, evt: 'click'},
          {sel:'#tool_unlink_use', fn: clickGroup, evt: 'click'},
          {sel:'[id^=tool_align]', fn: clickAlign, evt: 'click'},
          // these two lines are required to make Opera work properly with the flyout mechanism
    //       {sel:'#tools_rect_show', fn: clickRect, evt: 'click'},
    //       {sel:'#tools_ellipse_show', fn: clickEllipse, evt: 'click'},
          {sel:'#tool_bold', fn: clickBold, evt: 'mousedown'},
          {sel:'#tool_italic', fn: clickItalic, evt: 'mousedown'},
          {sel:'#sidepanel_handle', fn: toggleSidePanel, key: ['X']},
          {sel:'#copy_save_done', fn: cancelOverlays, evt: 'click'},
          
          // Shortcuts not associated with buttons
          {key: 'shift+left', fn: function(){rotateSelected(0)}},
          {key: 'shift+right', fn: function(){rotateSelected(1)}},
          {key: 'shift+O', fn: selectPrev},
          {key: 'shift+P', fn: selectNext},
          {key: [modKey+'up', true], fn: function(){zoomImage(2);}},
          {key: [modKey+'down', true], fn: function(){zoomImage(.5);}},
          {key: [modKey+'[', true], fn: function(){moveUpDownSelected('Down');}},
          {key: [modKey+']', true], fn: function(){moveUpDownSelected('Up');}},
          {key: ['up', true], fn: function(){moveSelected(0,-1);}},
          {key: ['down', true], fn: function(){moveSelected(0,1);}},
          {key: ['left', true], fn: function(){moveSelected(-1,0);}},
          {key: ['right', true], fn: function(){moveSelected(1,0);}},
          {key: 'A', fn: function(){svgCanvas.selectAllInCurrentLayer();}}
        ];
        
        // Tooltips not directly associated with a single function
        var key_assocs = {
          '4/Shift+4': '#tools_rect_show',
          '5/Shift+5': '#tools_ellipse_show'
        };
      
        return {
          setAll: function() {
            var flyouts = {};
            
            $.each(tool_buttons, function(i, opts)  {        
              // Bind function to button
              if(opts.sel) {
                var btn = $(opts.sel);
                if (btn.length == 0) return true; // Skip if markup does not exist
                if(opts.evt) {
                  btn[opts.evt](opts.fn);
                }
    
                // Add to parent flyout menu, if able to be displayed
                if(opts.parent && $(opts.parent + '_show').length != 0) {
                  var f_h = $(opts.parent);
                  if(!f_h.length) {
                    f_h = makeFlyoutHolder(opts.parent.substr(1));
                  }
                  
                  f_h.append(btn);
                  
                  if(!$.isArray(flyouts[opts.parent])) {
                    flyouts[opts.parent] = [];
                  }
                  flyouts[opts.parent].push(opts);
                }
              }
              
              
              // Bind function to shortcut key
              if(opts.key) {
                // Set shortcut based on options
                var keyval, shortcut = '', disInInp = true, fn = opts.fn, pd = false;
                if($.isArray(opts.key)) {
                  keyval = opts.key[0];
                  if(opts.key.length > 1) pd = opts.key[1];
                  if(opts.key.length > 2) disInInp = opts.key[2];
                } else {
                  keyval = opts.key;
                }
                keyval += '';
                
                $.each(keyval.split('/'), function(i, key) {
                  $(document).bind('keydown', key, function(e) {
                    fn();
                    if(pd) {
                      e.preventDefault();
                    }
                    // Prevent default on ALL keys?
                    return false;
                  });
                });
                
                // Put shortcut in title
                if(opts.sel && !opts.hidekey) {
                  var new_title = btn.attr('title').split('[')[0] + '[' + keyval + ']';
                  key_assocs[keyval] = opts.sel;
                  // Disregard for menu items
                  if(!btn.parents('#main_menu').length) {
                    btn.attr('title', new_title);
                  }
                }
              }
            });
            
            // Setup flyouts
            setupFlyouts(flyouts);
            
            
            // Misc additional actions
            
            // Make "return" keypress trigger the change event
            $('.attr_changer, #image_url').bind('keydown', 'return', 
              function(evt) {$(this).change();evt.preventDefault();}
            );
            
            $('#tool_zoom').dblclick(dblclickZoom);
          },
          setTitles: function() {
            $.each(key_assocs, function(keyval, sel)  {
              var menu = ($(sel).parents('#main_menu').length);
            
              $(sel).each(function() {
                if(menu) {
                  var t = $(this).text().split(' [')[0];
                } else {
                  var t = this.title.split(' [')[0];              
                }
                var key_str = '';
                // Shift+Up
                $.each(keyval.split('/'), function(i, key) {
                  var mod_bits = key.split('+'), mod = '';
                  if(mod_bits.length > 1) {
                    mod = mod_bits[0] + '+';
                    key = mod_bits[1];
                  }
                  key_str += (i?'/':'') + mod + (uiStrings['key_'+key] || key);
                });
                if(menu) {
                  this.lastChild.textContent = t +' ['+key_str+']';
                } else {
                  this.title = t +' ['+key_str+']';
                }
              });
            });
          },
          getButtonData: function(sel) {
            var b;
            $.each(tool_buttons, function(i, btn) {
              if(btn.sel === sel) b = btn;
            });
            return b;
          }
        };
      }();
      
      Actions.setAll();
      
      // Select given tool
      Editor.ready(function() {
        var itool = curConfig.initTool,
          container = $("#tools_left, #svg_editor .tools_flyout"),
          pre_tool = container.find("#tool_" + itool),
          reg_tool = container.find("#" + itool);
        if(pre_tool.length) {
          tool = pre_tool;
        } else if(reg_tool.length){
          tool = reg_tool;
        } else {
          tool = $("#tool_select");
        }
        tool.click().mouseup();
        
        if(curConfig.wireframe) {
          $('#tool_wireframe').click();
        }
        
        if(curConfig.showlayers) {
          toggleSidePanel();
        }
        
        if(curConfig.gridSnapping) {
          $('#grid_snapping_on')[0].checked = true;
        }
        
        if(curConfig.snappingStep) {
          $('#grid_snapping_step').val(curConfig.snappingStep);
        }
      });
      
      $('#rect_rx').SpinButton({ min: 0, max: 1000, step: 1, callback: changeRectRadius });
      $('#stroke_width').SpinButton({ min: 0, max: 99, step: 1, smallStep: 0.1, callback: changeStrokeWidth });
      $('#angle').SpinButton({ min: -180, max: 180, step: 5, callback: changeRotationAngle });
      $('#font_size').SpinButton({ step: 1, min: 0.001, stepfunc: stepFontSize, callback: changeFontSize });
      $('#group_opacity').SpinButton({ step: 5, min: 0, max: 100, callback: changeOpacity });
      $('#blur').SpinButton({ step: .1, min: 0, max: 10, callback: changeBlur });
      $('#zoom').SpinButton({ min: 0.001, max: 10000, step: 50, stepfunc: stepZoom, callback: changeZoom });
      
      $("#workarea").contextMenu({
          menu: 'cmenu_canvas',
          inSpeed: 0
        },
        function(action, el, pos) {
          switch ( action ) {
            case 'delete':
              deleteSelected();
              break;
            case 'cut':
              cutSelected();
              break;
            case 'copy':
              copySelected();
              break;
            case 'paste':
              svgCanvas.pasteElements();
              break;
            case 'paste_in_place':
              svgCanvas.pasteElements('in_place');
              break;
            case 'move_down':
              moveUpDownSelected('Down');
              break;
            case 'move_up':
              moveUpDownSelected('Up');
              break;

          }
          
          if(svgCanvas.clipBoard.length) {
            canv_menu.enableContextMenuItems('#paste,#paste_in_place');
          }
      });
      
      var lmenu_func = function(action, el, pos) {
        switch ( action ) {
          case 'dupe':
            cloneLayer();
            break;
          case 'delete':
            deleteLayer();
            break;
          case 'merge_down':
            mergeLayer();
            break;
          case 'merge_all':
            svgCanvas.mergeAllLayers();
            updateContextPanel();
            populateLayers();
            break;
        }
      }
      
      $("#layerlist").contextMenu({
          menu: 'cmenu_layers',
          inSpeed: 0
        },
        lmenu_func
      );
      
      $("#layer_moreopts").contextMenu({
          menu: 'cmenu_layers',
          inSpeed: 0,
          allowLeft: true
        },
        lmenu_func
      );
      
      $('.contextMenu li').mousedown(function(ev) {
        ev.preventDefault();
      })
      
      $('#cmenu_canvas li').disableContextMenu();
      canv_menu.enableContextMenuItems('#delete,#cut,#copy');
      
      window.onbeforeunload = function() { 
        // Suppress warning if page is empty 
        if(undoMgr.getUndoStackSize() === 0) {
          show_save_warning = false;
        }

        // show_save_warning is set to "false" when the page is saved.
        if(!curConfig.no_save_warning && show_save_warning) {
          // Browser already asks question about closing the page
          return "There are unsaved changes."; 
        }
      };
      
      Editor.openPrep = function(func) {
        $('#main_menu').hide();
        if(undoMgr.getUndoStackSize() === 0) {
          func(true);
        } else {
          $.confirm(uiStrings.QwantToOpen, func);
        }
      }
      
      // use HTML5 File API: http://www.w3.org/TR/FileAPI/
      // if browser has HTML5 File API support, then we will show the open menu item
      // and provide a file input to click.  When that change event fires, it will
      // get the text contents of the file and send it to the canvas
      if (window.FileReader) {
        var inp = $('<input type="file">').change(function() {
          var f = this;
          Editor.openPrep(function(ok) {
            if(!ok) return;
            svgCanvas.clear();
            if(f.files.length==1) {
              var reader = new FileReader();
              reader.onloadend = function(e) {
                svgCanvas.setSvgString(e.target.result);
                updateCanvas();
              };
              reader.readAsText(f.files[0]);
            }
          });
        });
        $("#tool_open").show().prepend(inp);
        var inp2 = $('<input type="file">').change(function() {
          $('#main_menu').hide();
          if(this.files.length==1) {
            var reader = new FileReader();
            reader.onloadend = function(e) {
              svgCanvas.importSvgString(e.target.result, true);
              updateCanvas();
            };
            reader.readAsText(this.files[0]);
          }
        });
        $("#tool_import").show().prepend(inp2);
      }
      
      var updateCanvas = Editor.updateCanvas = function(center, new_ctr) {
        var w = workarea.width(), h = workarea.height();
        var w_orig = w, h_orig = h;
        var zoom = svgCanvas.getZoom();
        var w_area = workarea;
        var cnvs = $("#svgcanvas");
        
        var old_ctr = {
          x: w_area[0].scrollLeft + w_orig/2,
          y: w_area[0].scrollTop + h_orig/2
        };
        
        var multi = curConfig.canvas_expansion;
        w = Math.max(w_orig, svgCanvas.contentW * zoom * multi);
        h = Math.max(h_orig, svgCanvas.contentH * zoom * multi);
        
        if(w == w_orig && h == h_orig) {
          workarea.css('overflow','hidden');
        } else {
          workarea.css('overflow','scroll');
        }
        
        var old_can_y = cnvs.height()/2;
        var old_can_x = cnvs.width()/2;
        cnvs.width(w).height(h);
        var new_can_y = h/2;
        var new_can_x = w/2;
        var offset = svgCanvas.updateCanvas(w, h);
        
        var ratio = new_can_x / old_can_x;
    
        var scroll_x = w/2 - w_orig/2;
        var scroll_y = h/2 - h_orig/2;
        
        if(!new_ctr) {
    
          var old_dist_x = old_ctr.x - old_can_x;
          var new_x = new_can_x + old_dist_x * ratio;
    
          var old_dist_y = old_ctr.y - old_can_y;
          var new_y = new_can_y + old_dist_y * ratio;
    
          new_ctr = {
            x: new_x,
            y: new_y
          };
          
        } else {
          new_ctr.x += offset.x,
          new_ctr.y += offset.y;
        }
        
        if(center) {
          // Go to top-left for larger documents
          if(svgCanvas.contentW > w_area.width()) {
            // Top-left
            workarea[0].scrollLeft = offset.x - 10;
            workarea[0].scrollTop = offset.y - 10;
          } else {
            // Center
            w_area[0].scrollLeft = scroll_x;
            w_area[0].scrollTop = scroll_y;
          }
        } else {
          w_area[0].scrollLeft = new_ctr.x - w_orig/2;
          w_area[0].scrollTop = new_ctr.y - h_orig/2;
        }
      }
    
//       $(function() {
        updateCanvas(true);
//       });
      
    //  var revnums = "svg-editor.js ($Rev: 1734 $) ";
    //  revnums += svgCanvas.getVersion();
    //  $('#copyright')[0].setAttribute("title", revnums);
    
      var good_langs = [];

      $('#lang_select option').each(function() {
        good_langs.push(this.value);
      });
      
//       var lang = ('lang' in curPrefs) ? curPrefs.lang : null;
      Editor.putLocale(null, good_langs);
      
      // Callback handler for embedapi.js
       try{
         json_encode = function(obj){
         //simple partial JSON encoder implementation
         if(window.JSON && JSON.stringify) return JSON.stringify(obj);
         var enc = arguments.callee; //for purposes of recursion
         if(typeof obj == "boolean" || typeof obj == "number"){
           return obj+'' //should work...
         }else if(typeof obj == "string"){
         //a large portion of this is stolen from Douglas Crockford's json2.js
         return '"'+
             obj.replace(
             /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g
             , function (a) {
             return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
             })
             +'"'; //note that this isn't quite as purtyful as the usualness
         }else if(obj.length){ //simple hackish test for arrayish-ness
         for(var i = 0; i < obj.length; i++){
           obj[i] = enc(obj[i]); //encode every sub-thingy on top
         }
         return "["+obj.join(",")+"]";
         }else{
         var pairs = []; //pairs will be stored here
         for(var k in obj){ //loop through thingys
           pairs.push(enc(k)+":"+enc(obj[k])); //key: value
         }
         return "{"+pairs.join(",")+"}" //wrap in the braces
         }
       }
         window.addEventListener("message", function(e){
         var cbid = parseInt(e.data.substr(0, e.data.indexOf(";")));
         try{
          e.source.postMessage("SVGe"+cbid+";"+json_encode(eval(e.data)), "*");
         }catch(err){          
          e.source.postMessage("SVGe"+cbid+";error:"+err.message, "*");
         }
       }, false)
       }catch(err){
         window.embed_error = err;
      }
      
    
    
      // For Compatibility with older extensions
      $(function() {
        window.svgCanvas = svgCanvas;
        svgCanvas.ready = svgEditor.ready;
      });
    
    
      Editor.setLang = function(lang, strings) {
        $.pref('lang', lang);
        $('#lang_select').val(lang);
        if(strings) {
          // $.extend will only replace the given strings
          var oldLayerName = $('#layerlist tr.layersel td.layername').text();
          var rename_layer = (oldLayerName == uiStrings.layer + ' 1');
          
          $.extend(uiStrings,strings);
          svgCanvas.setUiStrings(strings);
          Actions.setTitles();
          
          if(rename_layer) {
            svgCanvas.renameCurrentLayer(uiStrings.layer + ' 1');
            populateLayers();        
          }
          
          svgCanvas.runExtensions("langChanged", lang);
          
          // Update flyout tooltips
          setFlyoutTitles();
          
          // Copy title for certain tool elements
          var elems = {
            '#stroke_color': '#tool_stroke .icon_label, #tool_stroke .color_block',
            '#fill_color': '#tool_fill label, #tool_fill .color_block',
            '#linejoin_miter': '#cur_linejoin',
            '#linecap_butt': '#cur_linecap'
          }
          
          $.each(elems, function(source, dest) {
            $(dest).attr('title', $(source)[0].title);
          });
          
          // Copy alignment titles
          $('#multiselected_panel div[id^=tool_align]').each(function() {
            $('#tool_pos' + this.id.substr(10))[0].title = this.title;
          });
          
        }
      };
    };
    
    var callbacks = [];
    
    Editor.ready = function(cb) {
      if(!is_ready) {
        callbacks.push(cb);
      } else {
        cb();
      }
    };

    Editor.runCallbacks = function() {
      $.each(callbacks, function() {
        this();
      });
      is_ready = true;
    };
    
    Editor.loadFromString = function(str) {
      Editor.ready(function() {
        svgCanvas.setSvgString(str);
        svgCanvas.undoMgr.reset();
      });
    };
    
    Editor.resetTransactionManager = function() {
      Editor.ready(function() {
        svgCanvas.undoMgr.reset();
      });
    };
    
    Editor.loadFromURL = function(url, cache) {
      Editor.ready(function() {
        $.ajax({
          'url': url,
          'dataType': 'text',
          cache: !!cache,
          success: svgCanvas.setSvgString,
          error: function(xhr, stat, err) {
            if(xhr.responseText) {
              svgCanvas.setSvgString(xhr.responseText);
            } else {
              $.alert("Unable to load from URL. Error: \n"+err+'');
            }
          }
        });
      });
    };
    
    Editor.loadFromDataURI = function(str) {
      Editor.ready(function() {
        svgCanvas.setSvgString(str);
        var pre = 'data:image/svg+xml;base64,';
        var src = str.substring(pre.length);
        svgCanvas.setSvgString(Utils.decode64(src));
      });
    };
    
    Editor.addExtension = function() {
      var args = arguments;
      
      // Note that we don't want this on Editor.ready since some extensions
      // may want to run before then (like server_opensave).
      $(function() {
        if(svgCanvas) svgCanvas.addExtension.apply(this, args);
      });
    };

    return Editor;
  }(jQuery);
  
  // Run init once DOM is loaded
  $(svgEditor.init);
  
})();

// ?iconsize=s&bkgd_color=555

// svgEditor.setConfig({
// //   imgPath: 'foo',
//   dimensions: [800, 600],
//   canvas_expansion: 5,
//   initStroke: {
//     color: '0000FF',
//     width: 3.5,
//     opacity: .5
//   },
//   initFill: {
//     color: '550000',
//     opacity: .75
//   },
//   extensions: ['ext-helloworld.js']
// })
