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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of Qt Creator.
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** GNU General Public License Usage
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import QtQuick 2.15
import QtQuick.Layouts 1.15
import QtQuickDesignerTheme 1.0
import HelperWidgets 2.0
import StudioTheme 1.0 as StudioTheme

/* The view displaying the item grid.

The following Qml context properties have to be set:
- listmodel itemLibraryModel
- int itemLibraryIconWidth
- int itemLibraryIconHeight

itemLibraryModel has to have the following structure:

ListModel {
ListElement {
int sectionLibId
string sectionName
list sectionEntries: [
ListElement {
int itemLibId
string itemName
pixmap itemPixmap
},
...
]
}
...
}
*/


ScrollView {
    id: itemsView

    Item {
        id: styleConstants
        property int textWidth: 58
        property int textHeight: Theme.smallFontPixelSize() * 2

        property int cellHorizontalMargin: 1
        property int cellVerticalSpacing: 2
        property int cellVerticalMargin: 4

        // the following depend on the actual shape of the item delegate
        property int cellWidth: textWidth + 2 * cellHorizontalMargin
        property int cellHeight: itemLibraryIconHeight + textHeight +
        2 * cellVerticalMargin + cellVerticalSpacing
    }

    Column {
        id: column
        Repeater {
            model: itemLibraryModel  // to be set in Qml context
            delegate: Section {
                width: itemsView.width -
                       (itemsView.verticalScrollBarVisible ? StudioTheme.Values.scrollBarThickness : 0)
                caption: sectionName // to be set by model
                visible: sectionVisible
                topPadding: 2
                leftPadding: 2
                rightPadding: 1
                expanded: sectionExpanded
                onExpandedChanged: itemLibraryModel.setExpanded(expanded, sectionName);
                Grid {
                    id: itemGrid

                    columns: parent.width / styleConstants.cellWidth
                    property int flexibleWidth: (parent.width - styleConstants.cellWidth * columns) / columns

                    Repeater {
                        model: sectionEntries
                        delegate: ItemDelegate {
                            visible: itemVisible
                            width: styleConstants.cellWidth + itemGrid.flexibleWidth
                            height: styleConstants.cellHeight
                        }
                    }
                }
            }
        }
    }

}
