2011-10-30 19:47:08 +01:00
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/****************************************************************************
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**
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** Copyright (C) 2011 Marco Martin <mart@kde.org>
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Components project.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// The PageStack item defines a container for pages and a stack-based
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// navigation model. Pages can be defined as QML items or components.
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2013-02-06 13:37:56 +01:00
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import QtQuick 2.0
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2011-10-30 19:47:08 +01:00
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import "." 0.1
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2011-12-22 14:16:01 +01:00
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import "private/PageStack.js" as Engine
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2011-10-30 19:47:08 +01:00
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2012-12-17 19:05:25 +01:00
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/**
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* The PageStack component provides a stack-based navigation model that you can
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* use in your application. A stack-based navigation model means that a page of
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* content for your application is pushed onto a stack when the user navigates
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* deeper into the application page hierarchy. The user can then go back to the
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* previous page (or several pages back) by popping a page (or several pages)
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* off the top of the stack.
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*/
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2011-10-30 19:47:08 +01:00
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Item {
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id: root
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width: parent ? parent.width : 0
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height: parent ? parent.height : 0
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2012-12-17 19:05:25 +01:00
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/** The number of pages on the page stack. */
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2011-10-30 19:47:08 +01:00
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property int depth: Engine.getDepth()
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2012-12-17 19:05:25 +01:00
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/** The page in the stack that is currently visible. */
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2011-10-30 19:47:08 +01:00
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property Item currentPage: null
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2012-12-17 19:05:25 +01:00
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/**
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* The toolbar container for the tools associated with each page.
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*
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* If a toolbar is specified, the tools set for the current page is shown
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* to the user.
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*
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* If toolbar is null, then no tools are shown even if a page does have
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* tools.
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*/
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2011-10-30 19:47:08 +01:00
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property ToolBar toolBar
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2012-12-17 19:05:25 +01:00
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/**
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* The page to be automatically loaded when this PageStack component gets
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* instantiated.
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*/
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2011-10-30 19:47:08 +01:00
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property variant initialPage
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2012-12-17 19:05:25 +01:00
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/** Indicates whether there is an ongoing page transition. */
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2011-10-30 19:47:08 +01:00
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property bool busy: internal.ongoingTransitionCount > 0
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2012-12-17 19:05:25 +01:00
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/**
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* Pushes a page on the stack.
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*
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* The page can be defined as a component, item or string. If an item is
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* used then the page will get re-parented. If a string is used then it is
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* interpreted as a url that is used to load a page component.
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*
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* The page can also be given as an array of pages. In this case all those
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* pages will be pushed onto the stack. The items in the stack can be
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* components, items or strings just like for single pages. Additionally an
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* object can be used, which specifies a page and an optional properties
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* property. This can be used to push multiple pages while still giving
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* each of them properties. When an array is used the transition animation
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* will only be to the last page.
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*
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* Note: When the stack is empty, a push() or replace() does not perform a
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* transition animation because there is no page to transition from. The
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* only time this normally happens is when an application is starting up so
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* it is not appropriate to have a transition animation anyway.
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*
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* @param type:variant page the page to push
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* @param type:dict properties optional argument to define a map of
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* properties to set on the page.
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* @param type:bool immediate set to true to disable transition animations
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*
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* @return type:Page the page instance.
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*/
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2011-10-30 19:47:08 +01:00
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function push(page, properties, immediate)
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{
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return Engine.push(page, properties, false, immediate);
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}
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2012-12-17 19:05:25 +01:00
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/**
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* Pops a page off the stack.
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*
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* @param type:Page page if page is specified then the stack is unwound to that
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* page, to unwind to the first page specify page as null.
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* @param type:bool immediate set to true to disable transition animations
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*
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* @return type:Page the page instance that was popped off the stack.
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*/
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2011-10-30 19:47:08 +01:00
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function pop(page, immediate)
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{
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return Engine.pop(page, immediate);
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}
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2012-12-17 19:05:25 +01:00
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/**
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* Replaces the top-most page on the stack with page.
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*
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* As in the push() operation, you can use a component, item or string for
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* the page, or even an array of pages. If the page is based on the Item
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* element, the page is re-parented. As in the pop() operation, the
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* replaced page on the stack is re-parented back to its original parent.
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*
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* @param type:variant page the page to push
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* @param type:dict properties optional argument to define a map of
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* properties to set on the page.
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* @param type:bool immediate set to true to disable transition animations
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*
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* @return type:Page The new top page on the stack.
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*/
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2011-10-30 19:47:08 +01:00
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function replace(page, properties, immediate)
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{
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return Engine.push(page, properties, true, immediate);
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}
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2012-12-17 19:05:25 +01:00
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/** Clears the page stack of all pages. */
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2011-10-30 19:47:08 +01:00
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function clear()
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{
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return Engine.clear();
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}
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2012-12-17 19:05:25 +01:00
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/**
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* Iterates through all pages (top to bottom) and invokes the specified function.
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* If the specified function returns true the search stops and the find function
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* returns the page that the iteration stopped at. If the search doesn't result
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* in any page being found then null is returned.
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*
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* @param type:function func the function to call
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* @return type:Page the found page or null
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*/
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2011-10-30 19:47:08 +01:00
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function find(func)
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{
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return Engine.find(func);
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}
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// Called when the page stack visibility changes.
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onVisibleChanged: {
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if (currentPage) {
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internal.setPageStatus(currentPage, visible ? PageStatus.Active : PageStatus.Inactive);
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if (visible)
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currentPage.visible = currentPage.parent.visible = true;
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}
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}
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onInitialPageChanged: {
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2011-11-28 17:25:26 +01:00
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if (!internal.completed) {
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return
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}
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2011-10-30 19:47:08 +01:00
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if (initialPage) {
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2011-11-28 17:25:26 +01:00
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if (depth == 0) {
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2011-10-30 19:47:08 +01:00
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push(initialPage, null, true)
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2011-11-28 17:25:26 +01:00
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} else if (depth == 1) {
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2011-10-30 19:47:08 +01:00
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replace(initialPage, null, true)
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2011-11-28 17:25:26 +01:00
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} else {
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2011-10-30 19:47:08 +01:00
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console.log("Cannot update PageStack.initialPage")
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2011-11-28 17:25:26 +01:00
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}
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2011-10-30 19:47:08 +01:00
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}
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}
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Component.onCompleted: {
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2011-11-28 17:25:26 +01:00
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internal.completed = true
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2011-10-30 19:47:08 +01:00
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if (initialPage && depth == 0)
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push(initialPage, null, true)
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}
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QtObject {
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id: internal
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// The number of ongoing transitions.
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property int ongoingTransitionCount: 0
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2011-11-28 17:25:26 +01:00
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//FIXME: there should be a way to access to theh without storing it in an ugly way
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property bool completed: false
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2011-10-30 19:47:08 +01:00
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// Sets the page status.
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function setPageStatus(page, status)
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{
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if (page != null) {
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if (page.status !== undefined) {
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if (status == PageStatus.Active && page.status == PageStatus.Inactive)
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page.status = PageStatus.Activating;
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else if (status == PageStatus.Inactive && page.status == PageStatus.Active)
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page.status = PageStatus.Deactivating;
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page.status = status;
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}
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}
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}
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}
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// Component for page containers.
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Component {
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id: containerComponent
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Item {
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id: container
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width: parent ? parent.width : 0
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height: parent ? parent.height : 0
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2012-08-08 14:25:28 +02:00
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// The actual parent of page: page will anchor to that
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// in this case is container itself, not the case for PageRow
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property Item pageParent: container
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2011-10-30 19:47:08 +01:00
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// The states correspond to the different possible positions of the container.
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state: "Hidden"
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// The page held by this container.
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property Item page: null
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// The owner of the page.
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property Item owner: null
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2011-10-31 14:08:03 +01:00
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// The width of the longer stack dimension
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property int stackWidth: Math.max(root.width, root.height)
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2011-10-30 19:47:08 +01:00
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// Duration of transition animation (in ms)
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property int transitionDuration: 250
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// Flag that indicates the container should be cleaned up after the transition has ended.
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property bool cleanupAfterTransition: false
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// Flag that indicates if page transition animation is running
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property bool transitionAnimationRunning: false
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// State to be set after previous state change animation has finished
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property string pendingState: "none"
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// Ensures that transition finish actions are executed
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// in case the object is destroyed before reaching the
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// end state of an ongoing transition
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Component.onDestruction: {
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if (transitionAnimationRunning)
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transitionEnded();
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}
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// Sets pending state as current if state change is delayed
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onTransitionAnimationRunningChanged: {
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if (!transitionAnimationRunning && pendingState != "none") {
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state = pendingState;
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pendingState = "none";
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}
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}
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// Handles state change depening on transition animation status
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function setState(newState)
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{
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if (transitionAnimationRunning)
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pendingState = newState;
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else
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state = newState;
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}
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// Performs a push enter transition.
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function pushEnter(immediate, orientationChanges)
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{
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if (!immediate) {
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if (orientationChanges)
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setState("LandscapeRight");
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else
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setState("Right");
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}
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setState("");
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page.visible = true;
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if (root.visible && immediate)
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internal.setPageStatus(page, PageStatus.Active);
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}
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// Performs a push exit transition.
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function pushExit(replace, immediate, orientationChanges)
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{
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if (orientationChanges)
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setState(immediate ? "Hidden" : "LandscapeLeft");
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else
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setState(immediate ? "Hidden" : "Left");
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if (root.visible && immediate)
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internal.setPageStatus(page, PageStatus.Inactive);
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if (replace) {
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if (immediate)
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cleanup();
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else
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cleanupAfterTransition = true;
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}
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}
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// Performs a pop enter transition.
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function popEnter(immediate, orientationChanges)
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{
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if (!immediate)
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state = orientationChanges ? "LandscapeLeft" : "Left";
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setState("");
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page.visible = true;
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if (root.visible && immediate)
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internal.setPageStatus(page, PageStatus.Active);
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}
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// Performs a pop exit transition.
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function popExit(immediate, orientationChanges)
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{
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if (orientationChanges)
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setState(immediate ? "Hidden" : "LandscapeRight");
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else
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setState(immediate ? "Hidden" : "Right");
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if (root.visible && immediate)
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internal.setPageStatus(page, PageStatus.Inactive);
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if (immediate)
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cleanup();
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else
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cleanupAfterTransition = true;
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}
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// Called when a transition has started.
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function transitionStarted()
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{
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transitionAnimationRunning = true;
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internal.ongoingTransitionCount++;
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2011-11-01 22:45:38 +01:00
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if (root.visible) {
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2011-10-30 19:47:08 +01:00
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internal.setPageStatus(page, (state == "") ? PageStatus.Activating : PageStatus.Deactivating);
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2011-11-01 22:45:38 +01:00
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}
|
2011-10-30 19:47:08 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Called when a transition has ended.
|
|
|
|
function transitionEnded()
|
|
|
|
{
|
|
|
|
if (state != "")
|
|
|
|
state = "Hidden";
|
|
|
|
if (root.visible)
|
|
|
|
internal.setPageStatus(page, (state == "") ? PageStatus.Active : PageStatus.Inactive);
|
|
|
|
|
|
|
|
internal.ongoingTransitionCount--;
|
|
|
|
transitionAnimationRunning = false;
|
|
|
|
if (cleanupAfterTransition)
|
|
|
|
cleanup();
|
|
|
|
}
|
|
|
|
|
|
|
|
states: [
|
|
|
|
// Explicit properties for default state.
|
|
|
|
State {
|
|
|
|
name: ""
|
|
|
|
PropertyChanges { target: container; visible: true; opacity: 1 }
|
|
|
|
},
|
|
|
|
// Start state for pop entry, end state for push exit.
|
|
|
|
State {
|
|
|
|
name: "Left"
|
|
|
|
PropertyChanges { target: container; x: -width / 2; opacity: 0 }
|
|
|
|
},
|
|
|
|
// Start state for pop entry, end state for push exit
|
|
|
|
// when exiting portrait and entering landscape.
|
|
|
|
State {
|
|
|
|
name: "LandscapeLeft"
|
2011-10-31 14:08:03 +01:00
|
|
|
PropertyChanges { target: container; x: -stackWidth / 2; opacity: 0 }
|
2011-10-30 19:47:08 +01:00
|
|
|
},
|
|
|
|
// Start state for push entry, end state for pop exit.
|
|
|
|
State {
|
|
|
|
name: "Right"
|
|
|
|
PropertyChanges { target: container; x: width / 2; opacity: 0 }
|
|
|
|
},
|
|
|
|
// Start state for push entry, end state for pop exit
|
|
|
|
// when exiting portrait and entering landscape.
|
|
|
|
State {
|
|
|
|
name: "LandscapeRight"
|
2011-10-31 14:08:03 +01:00
|
|
|
PropertyChanges { target: container; x: stackWidth / 2; opacity: 0 }
|
2011-10-30 19:47:08 +01:00
|
|
|
},
|
|
|
|
// Inactive state.
|
|
|
|
State {
|
|
|
|
name: "Hidden"
|
|
|
|
PropertyChanges { target: container; visible: false }
|
|
|
|
}
|
|
|
|
]
|
|
|
|
|
|
|
|
transitions: [
|
|
|
|
// Push exit transition
|
|
|
|
Transition {
|
|
|
|
from: ""; to: "Left"
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.InQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Pop entry transition
|
|
|
|
Transition {
|
|
|
|
from: "Left"; to: ""
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.OutQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Push exit transition landscape
|
|
|
|
Transition {
|
|
|
|
from: ""; to: "LandscapeLeft"
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.InQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Pop entry transition landscape
|
|
|
|
Transition {
|
|
|
|
from: "LandscapeLeft"; to: ""
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.OutQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Pop exit transition
|
|
|
|
Transition {
|
|
|
|
from: ""; to: "Right"
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.InQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
// Workaround for transition animation bug causing ghost view with page pop transition animation
|
|
|
|
// TODO: Root cause still unknown
|
|
|
|
PropertyAnimation {}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Push entry transition
|
|
|
|
Transition {
|
|
|
|
from: "Right"; to: ""
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.OutQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Pop exit transition landscape
|
|
|
|
Transition {
|
|
|
|
from: ""; to: "LandscapeRight"
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.InQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
// Workaround for transition animation bug causing ghost view with page pop transition animation
|
|
|
|
// TODO: Root cause still unknown
|
|
|
|
PropertyAnimation {}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
},
|
|
|
|
// Push entry transition landscape
|
|
|
|
Transition {
|
|
|
|
from: "LandscapeRight"; to: ""
|
|
|
|
SequentialAnimation {
|
|
|
|
ScriptAction { script: transitionStarted() }
|
|
|
|
ParallelAnimation {
|
|
|
|
PropertyAnimation { properties: "x"; easing.type: Easing.OutQuad; duration: transitionDuration }
|
|
|
|
PropertyAnimation { properties: "opacity"; easing.type: Easing.Linear; duration: transitionDuration }
|
|
|
|
}
|
|
|
|
ScriptAction { script: transitionEnded() }
|
|
|
|
}
|
|
|
|
}
|
|
|
|
]
|
|
|
|
|
|
|
|
// Cleans up the container and then destroys it.
|
|
|
|
function cleanup()
|
|
|
|
{
|
|
|
|
if (page != null) {
|
2011-10-31 14:08:03 +01:00
|
|
|
if (page.status == PageStatus.Active) {
|
|
|
|
internal.setPageStatus(page, PageStatus.Inactive)
|
|
|
|
}
|
2011-10-30 19:47:08 +01:00
|
|
|
if (owner != container) {
|
|
|
|
// container is not the owner of the page - re-parent back to original owner
|
|
|
|
page.visible = false;
|
2011-11-01 22:45:38 +01:00
|
|
|
page.anchors.fill = undefined
|
2011-10-30 19:47:08 +01:00
|
|
|
page.parent = owner;
|
|
|
|
}
|
|
|
|
}
|
2011-11-01 22:45:38 +01:00
|
|
|
|
2011-10-30 19:47:08 +01:00
|
|
|
container.destroy();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|