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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
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.
pragma ComponentBehavior: Bound
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: "Kumquat"
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
//! [0]
Item {
//! [0]
id: delegateItem
width: listView.width
height: 80
clip: true
required property int index
required property string name
required property real cost
required property var attributes
Column {
id: arrows
anchors {
left: parent.left
verticalCenter: parent.verticalCenter
}
Image {
source: "content/pics/arrow-up.png"
MouseArea {
anchors.fill: parent
onClicked: fruitModel.move(delegateItem.index, delegateItem.index - 1, 1)
}
}
Image { source: "content/pics/arrow-down.png"
MouseArea {
anchors.fill: parent
onClicked: fruitModel.move(delegateItem.index, delegateItem.index + 1, 1)
}
}
}
Column {
anchors {
left: arrows.right
horizontalCenter: parent.horizontalCenter
bottom: parent.verticalCenter
}
Text {
anchors.horizontalCenter: parent.horizontalCenter
text: delegateItem.name
font.pixelSize: 15
color: "white"
}
Row {
anchors.horizontalCenter: parent.horizontalCenter
spacing: 5
Repeater {
model: delegateItem.attributes
Text {
required property string description
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(delegateItem.index, "cost", delegateItem.cost + 0.25)
}
Text {
id: costText
anchors.verticalCenter: parent.verticalCenter
text: '$' + Number(delegateItem.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(delegateItem.index, "cost",
Math.max(0, delegateItem.cost - 0.25))
}
Image {
source: "content/pics/list-delete.png"
MouseArea {
anchors.fill: parent
onClicked: fruitModel.remove(delegateItem.index)
}
}
}
}
// Animate adding and removing of items:
//! [1]
SequentialAnimation {
id: addAnimation
PropertyAction {
target: delegateItem
property: "height"
value: 0
}
NumberAnimation {
target: delegateItem
property: "height"
to: 80
duration: 250
easing.type: Easing.InOutQuad
}
}
ListView.onAdd: addAnimation.start()
SequentialAnimation {
id: removeAnimation
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
}
}
ListView.onRemove: removeAnimation.start()
}
//! [1]
}
// 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: qsTr("Add an item")
onClicked: {
fruitModel.append({
"name": "Pizza Margarita",
"cost": 5.95,
"attributes": [{"description": "Cheese"}, {"description": "Tomato"}]
})
}
}
TextButton {
text: qsTr("Remove all items")
onClicked: fruitModel.clear()
}
}
}
|
