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import QtQuick 2.0
Item {
width: 200
height: 442
ListModel {
id: listModel
ListElement {
name: "h1"
txt: "Header 1"
header: true
collapsed: true
}
ListElement {
name: "h2"
txt: "Header 2"
header: true
collapsed: true
}
ListElement {
name: "h3"
txt: "Header 3"
header: true
collapsed: true
}
function indexFromName(name) {
for (var i = 0; i < count; i++)
if (get(i).name === name)
return i
console.warn("Did not find index for name " + name)
return -1
}
}
function populateModel(prefix, index, n) {
for (var k = 1; k <= n; k++) {
var name = prefix + k
var data = {
"collapsed": false,
"name": name,
"txt": name,
"header": false
}
listModel.insert(index + k, data)
}
}
function h2(open) {
var i = listModel.indexFromName("h2")
if (listModel.get(i).collapsed === !open)
return
listModel.setProperty(i, "collapsed", !open)
var n = 15
if (open) {
h3(false)
populateModel("c2_", listModel.indexFromName("h2"), n)
} else {
listModel.remove(i + 1, n)
}
}
function h3(open) {
var i = listModel.indexFromName("h3")
if (listModel.get(i).collapsed === !open)
return
listModel.setProperty(i, "collapsed", !open)
var n = 6
if (open) {
h2(false)
populateModel("c3_", listModel.indexFromName("h3"), n)
} else {
listModel.remove(i + 1, n)
}
}
ListView {
id: listView
width: parent.width
height: parent.height
cacheBuffer: 0
model: listModel
property bool transitionsDone: false
property int runningTransitions: 0
onRunningTransitionsChanged: {
if (runningTransitions === 0)
transitionsDone = true
}
displaced: Transition {
id: dispTrans
SequentialAnimation {
ScriptAction {
script: listView.runningTransitions++
}
NumberAnimation {
property: "y";
duration: 250
}
ScriptAction {
script: listView.runningTransitions--
}
}
}
delegate: Rectangle {
id: rect
color: header ? "yellow" : "cyan"
border.color: "black"
height: 50
width: parent.width
Text {
anchors.centerIn: parent
font.pixelSize: 20
text: txt
}
MouseArea {
anchors.fill: parent
onClicked: {
listView.currentIndex = index
var i = listModel.indexFromName("h3")
if (i === -1)
return;
var isCollapsed = listModel.get(i).collapsed
if (name === "h2")
h2(isCollapsed)
else if (name === "h3")
h3(isCollapsed)
}
}
}
}
}
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