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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick 2.1
import QtQuick.Controls 1.1
import QtQuick.Controls.Private 1.0
/*!
\qmltype TabView
\inqmlmodule QtQuick.Controls
\since 5.1
\ingroup views
\brief A control that allows the user to select one of multiple stacked items.
You can create a custom appearance for a TabView by
assigning a \l {QtQuick.Controls.Styles::TabViewStyle}{TabViewStyle}.
*/
FocusScope {
id: root
implicitWidth: 240
implicitHeight: 150
/*! The current tab index */
property int currentIndex: 0
/*! The current tab count */
property int count: 0
/*! The visibility of the tab frame around contents */
property bool frameVisible: true
/*! The visibility of the tab bar */
property bool tabsVisible: true
/*!
\qmlproperty enumeration TabView::tabPosition
\list
\li Qt.TopEdge (default)
\li Qt.BottomEdge
\endlist
*/
property int tabPosition: Qt.TopEdge
/*! \internal */
default property alias data: stack.data
/*! Adds a new tab page with title with and optional Component.
Returns the newly added tab.
*/
function addTab(title, component) {
return insertTab(__tabs.count, title, component)
}
/*! Inserts a new tab with title at index, with an optional Component.
Returns the newly added tab.
*/
function insertTab(index, title, component) {
// 'loader' parent is a pending workaround while waiting for:
// https://codereview.qt-project.org/#change,65788
var tab = tabcomp.createObject(loader)
tab.sourceComponent = component
tab.title = title
// insert at appropriate index first, then set the parent to
// avoid onChildrenChanged appending it to the end of the list
__tabs.insert(index, {tab: tab})
tab.__inserted = true
tab.parent = stack
__setOpacities()
return tab
}
/*! Removes and destroys a tab at the given \a index. */
function removeTab(index) {
var tab = __tabs.get(index).tab
__tabs.remove(index, 1)
tab.destroy()
if (currentIndex > 0)
currentIndex--
__setOpacities()
}
/*! Moves a tab \a from index \a to another. */
function moveTab(from, to) {
__tabs.move(from, to, 1)
if (currentIndex == from) {
currentIndex = to
} else {
var start = Math.min(from, to)
var end = Math.max(from, to)
if (currentIndex >= start && currentIndex <= end) {
if (from < to)
--currentIndex
else
++currentIndex
}
}
}
/*! Returns the \l Tab item at \a index. */
function getTab(index) {
return __tabs.get(index).tab
}
/*! \internal */
property ListModel __tabs: ListModel { }
/*! \internal */
property Component style: Qt.createComponent(Settings.style + "/TabViewStyle.qml", root)
/*! \internal */
property var __styleItem: loader.item
onCurrentIndexChanged: __setOpacities()
/*! \internal */
function __setOpacities() {
for (var i = 0; i < __tabs.count; ++i) {
var child = __tabs.get(i).tab
child.visible = (i == currentIndex ? true : false)
}
count = __tabs.count
}
activeFocusOnTab: false
Component {
id: tabcomp
Tab {}
}
TabBar {
id: tabbarItem
objectName: "tabbar"
tabView: root
style: loader.item
anchors.top: parent.top
anchors.left: root.left
anchors.right: root.right
}
Loader {
id: loader
z: tabbarItem.z - 1
sourceComponent: style
property var __control: root
}
Loader {
id: frameLoader
z: tabbarItem.z - 1
anchors.fill: parent
anchors.topMargin: tabPosition === Qt.TopEdge && tabbarItem && tabsVisible ? Math.max(0, tabbarItem.height - baseOverlap) : 0
anchors.bottomMargin: tabPosition === Qt.BottomEdge && tabbarItem && tabsVisible ? Math.max(0, tabbarItem.height -baseOverlap) : 0
sourceComponent: frameVisible && loader.item ? loader.item.frame : null
property int baseOverlap: __styleItem ? __styleItem.frameOverlap : 0
Item {
id: stack
anchors.fill: parent
anchors.margins: (frameVisible ? frameWidth : 0)
anchors.topMargin: anchors.margins + (style =="mac" ? 6 : 0)
anchors.bottomMargin: anchors.margins
property int frameWidth
property string style
property bool completed: false
Component.onCompleted: {
addTabs(stack.children)
completed = true
}
onChildrenChanged: {
if (completed)
stack.addTabs(stack.children)
}
function addTabs(tabs) {
var tabAdded = false
for (var i = 0 ; i < tabs.length ; ++i) {
var tab = tabs[i]
if (!tab.__inserted && tab.Accessible.role === Accessible.LayeredPane) {
tab.__inserted = true
// reparent tabs created dynamically by createObject(tabView)
tab.parent = stack
// a dynamically added tab should also get automatically removed when destructed
if (completed)
tab.Component.onDestruction.connect(stack.onDynamicTabDestroyed.bind(tab))
__tabs.append({tab: tab})
tabAdded = true
}
}
if (tabAdded)
__setOpacities()
}
function onDynamicTabDestroyed() {
for (var i = 0; i < __tabs.count; ++i) {
if (__tabs.get(i).tab === this) {
__tabs.remove(i, 1)
__setOpacities()
break
}
}
}
}
onLoaded: { item.z = -1 }
}
onChildrenChanged: stack.addTabs(root.children)
states: [
State {
name: "Bottom"
when: tabPosition === Qt.BottomEdge && tabbarItem != undefined
PropertyChanges {
target: tabbarItem
anchors.topMargin: -frameLoader.baseOverlap
}
AnchorChanges {
target: tabbarItem
anchors.top: frameLoader.bottom
}
}
]
}
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