examples: add QAbstractListModel/QML

Interactive example to add, remove and move elements inside
a ListView (QML) from a QAbstractListModel (Python).

A screenshot is included.

Task-number: PYSIDE-841
Change-Id: I1c4d7868860c7482930fbb729cb4c2b503c01d88
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/examples/declarative/editingmodel/MovingRectangle.qml b/examples/declarative/editingmodel/MovingRectangle.qml
new file mode 100644
index 000000000..0d835af1c
--- /dev/null
+++ b/examples/declarative/editingmodel/MovingRectangle.qml
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt for Python examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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
+import QtQuick.Controls
+
+Rectangle {
+    id: root
+    property int modelIndex
+    property Item dragParent
+    property Item sizeParent
+    property alias text: zone.text
+    property alias bgColor: root.color
+
+    anchors {
+        horizontalCenter: parent.horizontalCenter
+        verticalCenter: parent.verticalCenter
+    }
+    color:  backgroundColor
+    anchors.fill: sizeParent
+    border.color: "yellow"
+    border.width: 0
+    TextArea {
+        id: zone
+        anchors.centerIn: parent
+        text: display
+        onTextChanged: model.edit = text
+    }
+
+    MouseArea {
+        id: zoneMouseArea
+        anchors.fill: parent
+
+        acceptedButtons: Qt.MiddleButton
+        onClicked: function(mouse) {
+            if (mouse.button == Qt.MiddleButton)
+                lv.model.remove(index)
+            else
+                mouse.accepted = false
+        }
+    }
+    DragHandler {
+        id: dragHandler
+        xAxis {
+
+            enabled: true
+            minimum: 0
+            maximum: lv.width - droparea.width
+        }
+        yAxis.enabled: false
+        acceptedButtons: Qt.LeftButton
+    }
+    Drag.active: dragHandler.active
+    Drag.source: root
+    Drag.hotSpot.x: width / 2
+
+    states: [
+        State {
+            when: dragHandler.active
+            ParentChange {
+                target: root
+                parent: root.dragParent
+            }
+
+            AnchorChanges {
+                target: root
+                anchors.horizontalCenter: undefined
+                anchors.verticalCenter: undefined
+            }
+            PropertyChanges {
+                target: root
+                opacity: 0.6
+                border.width: 3
+            }
+        }
+    ]
+}