DelegatePage.qml Example File | Qt Quick Controls 2 5.7

Qt 5.7 | Qt Quick Controls 2 | Qt Quick Controls 2 - Gallery | DelegatePage.qml Example File

Qt 5.7.1 Reference Documentation

# DelegatePage.qml Example File

gallery/pages/DelegatePage.qml

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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
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      **     from this software without specific prior written permission.
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      import QtQuick 2.6
      import QtQuick.Layouts 1.1
      import QtQuick.Controls 2.0

      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

                  onClicked: if (swipe.complete) view.model.remove(ourIndex)

                  Component {
                      id: removeComponent

                      Rectangle {
                          color: swipeDelegate.swipe.complete && swipeDelegate.pressed ? "#333" : "#444"
                          width: parent.width
                          height: parent.height
                          clip: true

                          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
                          }
                      }
                  }
              }
          }
      }