/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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****************************************************************************/

import QtQuick 2.2
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.1
import HelperWidgets 2.0
import QtQuickDesignerTheme 1.0

Rectangle {
    z: expressionTextField.visible ? 5 : 0
    border.width: 1
    property bool isBaseState
    property bool isCurrentState
    property color baseColor
    property string delegateStateName
    property string delegateStateImageSource
    property int delegateStateImageSize
    property bool delegateHasWhenCondition
    property string delegateWhenConditionString

    color: baseColor
    border.color: Theme.qmlDesignerBorderColor()

    function autoComplete(text, pos, explicitComplete, filter) {
        var stringList = statesEditorModel.autoComplete(text, pos, explicitComplete)
        return stringList
    }

    MouseArea {
        anchors.fill: parent

        acceptedButtons: Qt.LeftButton
        onClicked: {
            focus = true
            root.currentStateInternalId = internalNodeId
        }
    }

    ToolButton {
        id: removeStateButton

        style: ButtonStyle {
            background: Rectangle {
                color: control.hovered ? Qt.lighter(baseColor, 1.2)  : "transparent"
                Image {
                    source: "image://icons/close"
                    height: 16
                    width: 16
                }
            }
        }


        anchors.right: parent.right
        anchors.rightMargin: 2
        anchors.verticalCenter: stateNameField.verticalCenter
        height: 16
        width: 16
        visible: !isBaseState

        onClicked: root.deleteState(internalNodeId)
    }

    Image {
        id: whenButton
        visible: !isBaseState && expanded
        width: 14
        height: 14
        x: 4
        y: 6
        source: {
            if (whenMouseArea.containsMouse)
                return "image://icons/submenu"

            return delegateHasWhenCondition ? "image://icons/expression" : "image://icons/placeholder"

        }

        MouseArea {
            id: whenMouseArea
            hoverEnabled: true
            anchors.fill: parent
            onClicked: contextMenu.popup()
        }
        Menu {
            id: contextMenu

            MenuItem {
                text: qsTr("Set when Condition")
                onTriggered: {
                    expressionTextField.text = delegateWhenConditionString
                    expressionTextField.visible = true
                    expressionTextField.forceActiveFocus()
                }

            }

            MenuItem {
                visible: delegateHasWhenCondition
                text: qsTr("Reset when Condition")
                onTriggered: {
                   statesEditorModel.resetWhenCondition(internalNodeId)
                }

            }
        }


    }

    TextField {
        id: stateNameField
        y: 4
        font.pixelSize: 9
        anchors.left: whenButton.right
        // use the spacing which the image to the delegate rectangle has
        anchors.leftMargin: 4
        anchors.right: removeStateButton.left
        anchors.rightMargin: 4
        style: DesignerTextFieldStyle {}
        readOnly: isBaseState

        onActiveFocusChanged: {
            if (activeFocus)
                 root.currentStateInternalId = internalNodeId
        }

        Component.onCompleted: {
            text = delegateStateName
            if (isBaseState)
                __panel.visible = false
        }

        onEditingFinished: {
            if (text != delegateStateName)
                statesEditorModel.renameState(internalNodeId, text)
        }

    }

    Item {
        id: stateImageArea
        anchors.topMargin: 4
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.top: stateNameField.bottom

        height: delegateStateImageSize + 2
        width: delegateStateImageSize + 2

        visible: expanded
        Rectangle {
            anchors.margins: -1
            anchors.fill: stateImage
            border.width: 1
            border.color: Theme.qmlDesignerBackgroundColorDarker()
        }
        Image {
            id: stateImage
            anchors.centerIn: parent
            source: delegateStateImageSource
        }
    }

    ExpressionTextField {
        id: expressionTextField

        parent: root
        visible: false
        onAccepted: {
            visible = false
            statesEditorModel.setWhenCondition(internalNodeId, expressionTextField.text.trim())
        }

        onRejected: visible = false

        anchors.fill: parent
    }

}
