DelegatePage.qml Example File

gallery/pages/DelegatePage.qml
 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** 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.
 **
 ** BSD License Usage
 ** Alternatively, you may use this file under the terms of the BSD license
 ** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 import QtQuick 2.12
 import QtQuick.Layouts 1.12
 import QtQuick.Controls 2.12

 Pane {
     padding: 0

     property var delegateComponentMap: {
         "ItemDelegate": itemDelegateComponent,
         "SwipeDelegate": swipeDelegateComponent,
         "CheckDelegate": checkDelegateComponent,
         "RadioDelegate": radioDelegateComponent,
         "SwitchDelegate": switchDelegateComponent
     }

     Component {
         id: itemDelegateComponent

         ItemDelegate {
             text: labelText
             width: parent.width
         }
     }

     Component {
         id: swipeDelegateComponent

         SwipeDelegate {
             id: swipeDelegate
             text: labelText
             width: parent.width

             Component {
                 id: removeComponent

                 Rectangle {
                     color: SwipeDelegate.pressed ? "#333" : "#444"
                     width: parent.width
                     height: parent.height
                     clip: true

                     SwipeDelegate.onClicked: view.model.remove(ourIndex)

                     Label {
                         font.pixelSize: swipeDelegate.font.pixelSize
                         text: "Remove"
                         color: "white"
                         anchors.centerIn: parent
                     }
                 }
             }

             swipe.left: removeComponent
             swipe.right: removeComponent
         }
     }

     Component {
         id: checkDelegateComponent

         CheckDelegate {
             text: labelText
             width: parent.width
         }
     }

     ButtonGroup {
         id: radioButtonGroup
     }

     Component {
         id: radioDelegateComponent

         RadioDelegate {
             text: labelText
             ButtonGroup.group: radioButtonGroup
         }
     }

     Component {
         id: switchDelegateComponent

         SwitchDelegate {
             text: labelText
         }
     }

     ColumnLayout {
         id: column
         spacing: 40
         anchors.fill: parent
         anchors.topMargin: 20

         Label {
             Layout.fillWidth: true
             wrapMode: Label.Wrap
             horizontalAlignment: Qt.AlignHCenter
             text: "Delegate controls are used as delegates in views such as ListView."
         }

         ListView {
             id: listView
             Layout.fillWidth: true
             Layout.fillHeight: true
             clip: true
             model: ListModel {
                 ListElement { type: "ItemDelegate"; text: "ItemDelegate" }
                 ListElement { type: "ItemDelegate"; text: "ItemDelegate" }
                 ListElement { type: "ItemDelegate"; text: "ItemDelegate" }
                 ListElement { type: "SwipeDelegate"; text: "SwipeDelegate" }
                 ListElement { type: "SwipeDelegate"; text: "SwipeDelegate" }
                 ListElement { type: "SwipeDelegate"; text: "SwipeDelegate" }
                 ListElement { type: "CheckDelegate"; text: "CheckDelegate" }
                 ListElement { type: "CheckDelegate"; text: "CheckDelegate" }
                 ListElement { type: "CheckDelegate"; text: "CheckDelegate" }
                 ListElement { type: "RadioDelegate"; text: "RadioDelegate" }
                 ListElement { type: "RadioDelegate"; text: "RadioDelegate" }
                 ListElement { type: "RadioDelegate"; text: "RadioDelegate" }
                 ListElement { type: "SwitchDelegate"; text: "SwitchDelegate" }
                 ListElement { type: "SwitchDelegate"; text: "SwitchDelegate" }
                 ListElement { type: "SwitchDelegate"; text: "SwitchDelegate" }
             }

             section.property: "type"
             section.delegate: Pane {
                 width: listView.width
                 height: sectionLabel.implicitHeight + 20

                 Label {
                     id: sectionLabel
                     text: section
                     anchors.centerIn: parent
                 }
             }

             delegate: Loader {
                 id: delegateLoader
                 width: listView.width
                 sourceComponent: delegateComponentMap[text]

                 property string labelText: text
                 property ListView view: listView
                 property int ourIndex: index

                 // Can't find a way to do this in the SwipeDelegate component itself,
                 // so do it here instead.
                 ListView.onRemove: SequentialAnimation {
                     PropertyAction {
                         target: delegateLoader
                         property: "ListView.delayRemove"
                         value: true
                     }
                     NumberAnimation {
                         target: item
                         property: "height"
                         to: 0
                         easing.type: Easing.InOutQuad
                     }
                     PropertyAction {
                         target: delegateLoader
                         property: "ListView.delayRemove"
                         value: false
                     }
                 }
             }
         }
     }
 }