Dialog.qml

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/****************************************************************************
**
** Copyright (C) 2011 Marco Martin  <mart@kde.org>
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Components project.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
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**     notice, this list of conditions and the following disclaimer.
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**     the documentation and/or other materials provided with the
**     distribution.
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**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
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import QtQuick 1.0
import org.kde.plasma.core 0.1 as PlasmaCore
import "private/AppManager.js" as Utils
import "." 0.1
import "private" as Private

Item {
    id: root

    property alias title: titleBar.children

    property alias content: contentItem.children

    property alias buttons: buttonItem.children

    property Item visualParent

    property int status: DialogStatus.Closed


    property alias privateTitleHeight: titleBar.height
    property alias privateButtonsHeight: buttonItem.height

    signal accepted

    signal rejected

    signal clickedOutside

    function open() {
        dialogLayout.parent = internalLoader.item.mainItem

        if (internalLoader.dialog) {
            var pos = internalLoader.dialog.popupPosition(root.visualParent, Qt.AlignCenter)
            internalLoader.dialog.x = pos.x
            internalLoader.dialog.y = pos.y

            internalLoader.dialog.visible = true
            internalLoader.dialog.activateWindow()
        } else {
            internalLoader.inlineDialog.open()
        }
    }

    function accept() {
        if (status == DialogStatus.Open) {
            if (internalLoader.dialog) {
                internalLoader.dialog.visible = false
            } else {
                internalLoader.inlineDialog.close()
            }
            accepted()
        }
    }

    function reject() {
        if (status == DialogStatus.Open) {
            if (internalLoader.dialog) {
                internalLoader.dialog.visible = false
            } else {
                internalLoader.inlineDialog.close()
            }
            rejected()
        }
    }

    function close() {
        if (internalLoader.dialog) {
            internalLoader.dialog.visible = false
        } else {
            internalLoader.inlineDialog.close()
        }
    }

    visible: false

    Loader {
        id: internalLoader
        //the root item of the scene. Determines if there is enough room for an inline dialog
        property Item rootItem

        //this is when the dialog is a separate window
        property Item dialog: sourceComponent == dialogComponent ? item : null
        //this is when the dialog is inline
        property Item inlineDialog: sourceComponent == inlineDialogComponent ? item : null

        property bool loadCompleted: false

        Component.onCompleted: {
            rootItem = Utils.rootObject()
            loadCompleted = true
        }

        sourceComponent: {
            if (loadCompleted) {
                if (rootItem == null || dialogLayout.width > rootItem.width || dialogLayout.height > rootItem.height) {
                    dialogComponent
                } else {
                    inlineDialogComponent
                }
            }
        }
    }

    Component {
        id: dialogComponent
        PlasmaCore.Dialog {
            id: dialogItem
            windowFlags: Qt.Popup

            //state: "Hidden"
            visible: false
            onVisibleChanged: {
                if (visible) {
                    root.status = DialogStatus.Open
                } else {
                    root.status = DialogStatus.Closed
                }
            }

            mainItem: Item {
                id: dialogMainItem
                width: dialogLayout.width
                height: dialogLayout.height + theme.defaultFont.mSize.height * 2
            }

            Component.onCompleted: dialogLayout.parent = dialogMainItem
            Component.onDestruction: dialogLayout.parent = root
        }
    }

    Component {
        id: inlineDialogComponent
        Private.InlineDialog {
            id: inlineDialog
            visualParent: root.visualParent
            property Item mainItem: inlineDialogMainItem
            onStatusChanged: root.status = status

            Item {
                id: inlineDialogMainItem
                width: dialogLayout.width
                height: dialogLayout.height
            }

            Component.onCompleted: {
                dialogLayout.parent = inlineDialogMainItem
            }
            Component.onDestruction: dialogLayout.parent = root
        }
    }

    Item {
        id: dialogLayout
        width: Math.max(buttonItem.childrenRect.width, contentItem.childrenRect.width)
        height: titleBar.height + contentItem.childrenRect.height + buttonItem.childrenRect.height + 10

        parent: internalLoader.dialog ? internalLoader.dialog : internalLoader.inlineDialog
        // Consume all key events that are not processed by children
        Keys.onPressed: event.accepted = true
        Keys.onReleased: event.accepted = true

        Item {
            id: titleBar

            height: children.length > 0 && children[0].visible ? childrenRect.height : 0
            anchors {
                top: parent.top
                left: parent.left
                right: parent.right
            }
        }

        Item {
            id: contentItem

            clip: true
            anchors {
                top: titleBar.bottom
                left: parent.left
                right: parent.right
                bottom: buttonItem.top
                bottomMargin: 6
            }
        }

        Item {
            id: buttonItem

            height: childrenRect.height
            anchors {
                left: parent.left
                right: parent.right
                bottom: parent.bottom
                bottomMargin: 4
            }
        }
    }
}