Doxygenize PageStack
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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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/**Documented API
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Inherits:
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Item
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Imports:
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QtQuick 1.1
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.
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PageStack.js
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Description:
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The PageStack component provides a stack-based navigation model that you can use in your application. A stack-based navigation model means that a page of content for your application is pushed onto a stack when the user navigates deeper into the application page hierarchy. The user can then go back to the previous page (or several pages back) by popping a page (or several pages) off the top of the stack.
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Properties:
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* int depth:
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The number of pages on the page stack.
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* Item currentPage:
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The page in the stack that is currently visible.
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* ToolBar toolBar:
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The toolbar container for the tools associated with each page. If a toolbar is specified, the tools set for the current page is shown to the user.
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If toolbar is null, then no tools are shown even if a page does have tools.
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* variant initialPage:
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The page to be automatically loaded when this PageStack component gets instantiated.
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* bool busy:
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Indicates whether there is an ongoing page transition.
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Methods:
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* clear():
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Clears the page stack of all pages.
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* find(function):
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This iterates, top to bottom, through all the pages in the page stack and passes each page to the given function. If the specified function returns true, the iterating stops and this function returns the page that produced the true result. If no matching page is found in the page stack, null is returned.
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* pop(page, immediate):
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When you use pop() with no arguments, it pops the top page off the stack and returns that page to the caller. The normal pop transition animation is performed. If the page popped off the stack is based on the Item element, the page is re-parented back to its original parent.
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If the page didn't have an original parent (ie, was created with push(Qt.createComponent("foo.qml")) the page instance will be deleted.
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If you give a page argument, the stack is unwound to the given page. Any Item-based pages popped off the stack are re-parented to their original parent.
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If the given page is not found in the stack, the stack is unwound to the first page in the stack. However, if you specifically want to unwind the page stack to the first page in the stack, it is best to be explicit about what you are doing and use pop(null) rather than guessing a page that is not on the stack.
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The immediate argument defaults to false which means the normal transition animation is performed when a page is popped. If you do not want the transition animation to be performed pass a value of true for immediate.
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Note: A pop() on a stack with that contains 0 or 1 pages is a no-operation.
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Returns: The page that was top-most on the stack before the pop operation.
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* push(page, properties, immediate):
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Pushes the given page onto the page stack. You can use a component, item or string for the page. If the page is based on the Item element, the page is re-parented. If a string is used then it is interpreted as a URL that is used to load a page component. The push operation results in the appropriate transition animation being run. If you are pushing an array of pages, the transition animation is only shown for the last page.
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Returns: The new top page on the stack.
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The page argument can also be an array of pages. In this case, all the pages in the array are pushed onto the stack. The items in the array can be components, items or strings just like for pushing a single page.
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The page argument can also be an object that specifies a page with properties or even an array of pages with properties.
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The properties argument is optional and allows you to specify values for properties in the page being pushed.
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The immediate argument defaults to false which means the normal transition animation is performed when a page is pushed. If you do not want the transition animation to be performed pass a value of true for immediate.
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Note: When the stack is empty, a push() or replace() does not perform a transition animation because there is no page to transition from. The only time this normally happens is when an application is starting up so it is not appropriate to have a transition animation anyway.
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See also Page.
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* replace(page, properties, immediate):
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Replaces the top-most page on the stack with page. As in the push() operation, you can use a component, item or string for the page, or even an array of pages. If the page is based on the Item element, the page is re- parented. As in the pop() operation, the replaced page on the stack is re- parented back to its original parent.
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Returns: The new top page on the stack.
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See also push().
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**/
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import QtQuick 1.1
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import "." 0.1
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import "private/PageStack.js" as Engine
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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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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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/** The number of pages on the page stack. */
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property int depth: Engine.getDepth()
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/** The page in the stack that is currently visible. */
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property Item currentPage: null
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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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property ToolBar toolBar
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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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property variant initialPage
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// Indicates whether there is an ongoing page transition.
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/** Indicates whether there is an ongoing page transition. */
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property bool busy: internal.ongoingTransitionCount > 0
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// Pushes a page on the stack.
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// The page can be defined as a component, item or string.
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// If an item is used then the page will get re-parented.
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// If a string is used then it is 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 pages will be pushed
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// onto the stack. The items in the stack can be components, items or strings just like for single
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// pages. Additionally an 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 each of them properties.
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// When an array is used the transition animation will only be to the last page.
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//
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// The properties argument is optional and allows defining a map of properties to set on the page.
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// If the immediate argument is true then no transition animation is performed.
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// Returns the page instance.
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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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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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// Pops a page off the stack.
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// If page is specified then the stack is unwound to that page, to unwind to the first page specify
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// page as null. If the immediate argument is true then no transition animation is performed.
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// Returns the page instance that was popped off the stack.
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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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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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// Replaces a page on the stack.
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// See push() for details.
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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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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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// Clears the page stack.
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/** Clears the page stack of all pages. */
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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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// 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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* 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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function find(func)
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{
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return Engine.find(func);
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