plasma-framework/declarativeimports/plasmacomponents/qml/TabGroup.qml
Marco Martin 9bcc260757 add tabbar with default API
extended with currentitem in TabBar for tabbars without TabGroups
2011-10-29 20:07:30 +02:00

224 lines
8.8 KiB
QML

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import QtQuick 1.1
import "TabGroup.js" as Engine
import "." 0.1
Item {
id: root
property Item currentTab
property list<Item> privateContents
// Qt defect: cannot have list as default property
default property alias privateContentsDefault: root.privateContents
onChildrenChanged: {
// [0] is containerHost
if (children.length > 1)
Engine.addTab(children[1])
}
onPrivateContentsChanged: {
Engine.ensureContainers()
}
Component.onCompleted: {
// Set first tabs as current if currentTab is not set by application
if (currentTab == null && containerHost.children[0] && containerHost.children[0].children[0])
currentTab = containerHost.children[0].children[0]
priv.complete = true;
}
Item {
id: containerHost
objectName: "containerHost"
anchors.fill: parent
}
Component {
id: tabContainerComponent
Item {
id: tabContainerItem
onChildrenChanged: {
if (children.length == 0)
Engine.removeContainer(tabContainerItem)
else if (children.length == 1) {
children[0].width = width
children[0].height = height
// tab content created. set the first tab as current (if not set before, and if
// child is added after TabGroup has completed)
if (priv.complete && root.currentTab == null)
root.currentTab = children[0]
}
}
onWidthChanged: {
if (children.length > 0)
children[0].width = width
}
onHeightChanged: {
if (children.length > 0)
children[0].height = height
}
Component.onDestruction: {
if (typeof(root) != "undefined" && !root.currentTab) {
// selected one deleted. try to activate the neighbour
var removedIndex = -1
for (var i = 0; i < containerHost.children.length; i++) {
if (containerHost.children[i] == tabContainerItem) {
removedIndex = i
break
}
}
var newIndex = -1
if (removedIndex != -1) {
if (removedIndex != containerHost.children.length - 1)
newIndex = removedIndex + 1
else if (removedIndex != 0)
newIndex = removedIndex - 1
}
if (newIndex != -1)
root.currentTab = containerHost.children[newIndex].children[0]
else
root.currentTab = null
}
}
function incomingDone() {
state = ""
if (priv.incomingPage) {
priv.incomingPage.status = PageStatus.Active
priv.incomingPage = null
}
}
function outgoingDone() {
if (priv.outgoingPage) {
priv.outgoingPage.status = PageStatus.Inactive
priv.outgoingPage.visible = false
priv.outgoingPage = null
}
state = "Hidden"
}
width: parent ? parent.width : 0
height: parent ? parent.height : 0
state: "Hidden"
states: [
State { name: ""; PropertyChanges { target: tabContainerItem; opacity: 1.0; x: 0 } },
State { name: "Incoming"; PropertyChanges { target: tabContainerItem; opacity: 1.0; x: 0 } },
State { name: "Outgoing"; PropertyChanges { target: tabContainerItem; opacity: 0.0; x: -root.width } },
State { name: "Hidden"; PropertyChanges { target: tabContainerItem; opacity: 0.0; x: root.width } }
]
transitions: [
Transition {
to: "Incoming"
SequentialAnimation {
ScriptAction { script: root.clip = true }
PropertyAnimation { properties: "opacity,x"; easing.type: Easing.InQuad; duration: 250 }
ScriptAction { script: {incomingDone(); root.clip = false} }
}
},
Transition {
to: "Outgoing"
SequentialAnimation {
PropertyAnimation { properties: "opacity,x"; easing.type: Easing.InQuad; duration: 250 }
ScriptAction { script: outgoingDone() }
}
}
]
}
}
QtObject {
id: priv
property bool reparenting: false
property bool complete: false
property Item currentTabContainer: root.currentTab ? root.currentTab.parent : null
property Item incomingPage
property Item outgoingPage
property bool animate: true
onCurrentTabContainerChanged: {
for (var i = 0; i < containerHost.children.length; i++) {
var tabContainer = containerHost.children[i]
var isNewTab = (tabContainer == currentTabContainer)
if (isNewTab) {
if (tabContainer.state != "") {
if (tabContainer.children[0].status != undefined) {
incomingPage = tabContainer.children[0]
incomingPage.status = PageStatus.Activating // triggers the orientation change
incomingPage.visible = true
if (incomingPage == outgoingPage)
outgoingPage = null
}
if (animate)
tabContainer.state = "Incoming"
else
tabContainer.incomingDone()
}
} else {
if (tabContainer.state != "Hidden") {
if (tabContainer.children.length > 0 && tabContainer.children[0].status != undefined) {
outgoingPage = tabContainer.children[0]
outgoingPage.status = PageStatus.Deactivating
if (incomingPage == outgoingPage)
incomingPage = null
}
if (animate)
tabContainer.state = "Outgoing"
else
tabContainer.outgoingDone()
}
}
}
}
}
}