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<h1 class="title">dynamiclist.qml Example File</h1>
<span class="subtitle">views/listview/dynamiclist.qml</span>
<!-- $$$views/listview/dynamiclist.qml-description -->
<div class="descr"> <a name="details"></a>
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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
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import QtQuick 2.0
import "content"
// This example shows how items can be dynamically added to and removed from
// a ListModel, and how these list modifications can be animated.
Rectangle {
id: container
width: 500; height: 400
color: "#343434"
// The model:
ListModel {
id: fruitModel
ListElement {
name: "Apple"; cost: 2.45
attributes: [
ListElement { description: "Core" },
ListElement { description: "Deciduous" }
]
}
ListElement {
name: "Banana"; cost: 1.95
attributes: [
ListElement { description: "Tropical" },
ListElement { description: "Seedless" }
]
}
ListElement {
name: "Cumquat"; cost: 3.25
attributes: [
ListElement { description: "Citrus" }
]
}
ListElement {
name: "Durian"; cost: 9.95
attributes: [
ListElement { description: "Tropical" },
ListElement { description: "Smelly" }
]
}
}
// The delegate for each fruit in the model:
Component {
id: listDelegate
Item {
id: delegateItem
width: listView.width; height: 80
clip: true
Column {
id: arrows
anchors {
left: parent.left
verticalCenter: parent.verticalCenter
}
Image {
source: "content/pics/arrow-up.png"
MouseArea { anchors.fill: parent; onClicked: fruitModel.move(index, index-1, 1) }
}
Image { source: "content/pics/arrow-down.png"
MouseArea { anchors.fill: parent; onClicked: fruitModel.move(index, index+1, 1) }
}
}
Column {
anchors {
left: arrows.right
horizontalCenter: parent.horizontalCenter;
bottom: parent.verticalCenter
}
Text {
anchors.horizontalCenter: parent.horizontalCenter
text: name
font.pixelSize: 15
color: "white"
}
Row {
anchors.horizontalCenter: parent.horizontalCenter
spacing: 5
Repeater {
model: attributes
Text { text: description; color: "White" }
}
}
}
Item {
anchors {
left: arrows.right
horizontalCenter: parent.horizontalCenter;
top: parent.verticalCenter
bottom: parent.bottom
}
Row {
anchors.centerIn: parent
spacing: 10
PressAndHoldButton {
anchors.verticalCenter: parent.verticalCenter
source: "content/pics/plus-sign.png"
onClicked: fruitModel.setProperty(index, "cost", cost + 0.25)
}
Text {
id: costText
anchors.verticalCenter: parent.verticalCenter
text: '$' + Number(cost).toFixed(2)
font.pixelSize: 15
color: "white"
font.bold: true
}
PressAndHoldButton {
anchors.verticalCenter: parent.verticalCenter
source: "content/pics/minus-sign.png"
onClicked: fruitModel.setProperty(index, "cost", Math.max(0,cost-0.25))
}
Image {
source: "content/pics/list-delete.png"
MouseArea { anchors.fill:parent; onClicked: fruitModel.remove(index) }
}
}
}
// Animate adding and removing of items:
ListView.onAdd: SequentialAnimation {
PropertyAction { target: delegateItem; property: "height"; value: 0 }
NumberAnimation { target: delegateItem; property: "height"; to: 80; duration: 250; easing.type: Easing.InOutQuad }
}
ListView.onRemove: SequentialAnimation {
PropertyAction { target: delegateItem; property: "ListView.delayRemove"; value: true }
NumberAnimation { target: delegateItem; property: "height"; to: 0; duration: 250; easing.type: Easing.InOutQuad }
// Make sure delayRemove is set back to false so that the item can be destroyed
PropertyAction { target: delegateItem; property: "ListView.delayRemove"; value: false }
}
}
}
// The view:
ListView {
id: listView
anchors {
left: parent.left; top: parent.top;
right: parent.right; bottom: buttons.top;
margins: 20
}
model: fruitModel
delegate: listDelegate
}
Row {
id: buttons
anchors { left: parent.left; bottom: parent.bottom; margins: 20 }
spacing: 10
TextButton {
text: "Add an item"
onClicked: {
fruitModel.append({
"name": "Pizza Margarita",
"cost": 5.95,
"attributes": [{"description": "Cheese"}, {"description": "Tomato"}]
})
}
}
TextButton {
text: "Remove all items"
onClicked: fruitModel.clear()
}
}
}
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<!-- @@@views/listview/dynamiclist.qml -->
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distrib
>
Mageia
>
7
>
i586
>
media
>
core-updates
>
by-pkgid
>
6e2327ca1c896c6d674ae53117299f21
>
files
>
1833
