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jquery.mobile.navigation.js
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jquery.mobile.navigation.js
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/*
* jQuery Mobile Framework : core utilities for auto ajax navigation, base tag mgmt,
* Copyright (c) jQuery Project
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*/
( function( $, undefined ) {
//define vars for interal use
var $window = $( window ),
$html = $( 'html' ),
$head = $( 'head' ),
//url path helpers for use in relative url management
path = {
// This scary looking regular expression parses an absolute URL or its relative
// variants (protocol, site, document, query, and hash), into the various
// components (protocol, host, path, query, fragment, etc that make up the
// URL as well as some other commonly used sub-parts. When used with RegExp.exec()
// or String.match, it parses the URL into a results array that looks like this:
//
// [0]: http://jblas:password@mycompany.com:8080/mail/inbox?msg=1234&type=unread#msg-content
// [1]: http://jblas:password@mycompany.com:8080/mail/inbox?msg=1234&type=unread
// [2]: http://jblas:password@mycompany.com:8080/mail/inbox
// [3]: http://jblas:password@mycompany.com:8080
// [4]: http:
// [5]: //
// [6]: jblas:password@mycompany.com:8080
// [7]: jblas:password
// [8]: jblas
// [9]: password
// [10]: mycompany.com:8080
// [11]: mycompany.com
// [12]: 8080
// [13]: /mail/inbox
// [14]: /mail/
// [15]: inbox
// [16]: ?msg=1234&type=unread
// [17]: #msg-content
//
urlParseRE: /^(((([^:\/#\?]+:)?(?:(\/\/)((?:(([^:@\/#\?]+)(?:\:([^:@\/#\?]+))?)@)?(([^:\/#\?\]\[]+|\[[^\/\]@#?]+\])(?:\:([0-9]+))?))?)?)?((\/?(?:[^\/\?#]+\/+)*)([^\?#]*)))?(\?[^#]+)?)(#.*)?/,
//Parse a URL into a structure that allows easy access to
//all of the URL components by name.
parseUrl: function( url ) {
// If we're passed an object, we'll assume that it is
// a parsed url object and just return it back to the caller.
if ( $.type( url ) === "object" ) {
return url;
}
var matches = path.urlParseRE.exec( url || "" ) || [];
// Create an object that allows the caller to access the sub-matches
// by name. Note that IE returns an empty string instead of undefined,
// like all other browsers do, so we normalize everything so its consistent
// no matter what browser we're running on.
return {
href: matches[ 0 ] || "",
hrefNoHash: matches[ 1 ] || "",
hrefNoSearch: matches[ 2 ] || "",
domain: matches[ 3 ] || "",
protocol: matches[ 4 ] || "",
doubleSlash: matches[ 5 ] || "",
authority: matches[ 6 ] || "",
username: matches[ 8 ] || "",
password: matches[ 9 ] || "",
host: matches[ 10 ] || "",
hostname: matches[ 11 ] || "",
port: matches[ 12 ] || "",
pathname: matches[ 13 ] || "",
directory: matches[ 14 ] || "",
filename: matches[ 15 ] || "",
search: matches[ 16 ] || "",
hash: matches[ 17 ] || ""
};
},
//Turn relPath into an asbolute path. absPath is
//an optional absolute path which describes what
//relPath is relative to.
makePathAbsolute: function( relPath, absPath ) {
if ( relPath && relPath.charAt( 0 ) === "/" ) {
return relPath;
}
relPath = relPath || "";
absPath = absPath ? absPath.replace( /^\/|(\/[^\/]*|[^\/]+)$/g, "" ) : "";
var absStack = absPath ? absPath.split( "/" ) : [],
relStack = relPath.split( "/" );
for ( var i = 0; i < relStack.length; i++ ) {
var d = relStack[ i ];
switch ( d ) {
case ".":
break;
case "..":
if ( absStack.length ) {
absStack.pop();
}
break;
default:
absStack.push( d );
break;
}
}
return "/" + absStack.join( "/" );
},
//Returns true if both urls have the same domain.
isSameDomain: function( absUrl1, absUrl2 ) {
return path.parseUrl( absUrl1 ).domain === path.parseUrl( absUrl2 ).domain;
},
//Returns true for any relative variant.
isRelativeUrl: function( url ) {
// All relative Url variants have one thing in common, no protocol.
return path.parseUrl( url ).protocol === "";
},
//Returns true for an absolute url.
isAbsoluteUrl: function( url ) {
return path.parseUrl( url ).protocol !== "";
},
//Turn the specified realtive URL into an absolute one. This function
//can handle all relative variants (protocol, site, document, query, fragment).
makeUrlAbsolute: function( relUrl, absUrl ) {
if ( !path.isRelativeUrl( relUrl ) ) {
return relUrl;
}
var relObj = path.parseUrl( relUrl ),
absObj = path.parseUrl( absUrl ),
protocol = relObj.protocol || absObj.protocol,
doubleSlash = relObj.protocol ? relObj.doubleSlash : ( relObj.doubleSlash || absObj.doubleSlash ),
authority = relObj.authority || absObj.authority,
hasPath = relObj.pathname !== "",
pathname = path.makePathAbsolute( relObj.pathname || absObj.filename, absObj.pathname ),
search = relObj.search || ( !hasPath && absObj.search ) || "",
hash = relObj.hash;
return protocol + doubleSlash + authority + pathname + search + hash;
},
//Add search (aka query) params to the specified url.
addSearchParams: function( url, params ) {
var u = path.parseUrl( url ),
p = ( typeof params === "object" ) ? $.param( params ) : params,
s = u.search || "?";
return u.hrefNoSearch + s + ( s.charAt( s.length - 1 ) !== "?" ? "&" : "" ) + p + ( u.hash || "" );
},
convertUrlToDataUrl: function( absUrl ) {
var u = path.parseUrl( absUrl );
if ( path.isEmbeddedPage( u ) ) {
// For embedded pages, remove the dialog hash key as in getFilePath(),
// otherwise the Data Url won't match the id of the embedded Page.
return u.hash.split( dialogHashKey )[0].replace( /^#/, "" );
} else if ( path.isSameDomain( u, documentBase ) ) {
return u.hrefNoHash.replace( documentBase.domain, "" );
}
return absUrl;
},
//get path from current hash, or from a file path
get: function( newPath ) {
if( newPath === undefined ) {
newPath = location.hash;
}
return path.stripHash( newPath ).replace( /[^\/]*\.[^\/*]+$/, '' );
},
//return the substring of a filepath before the sub-page key, for making a server request
getFilePath: function( path ) {
var splitkey = '&' + $.mobile.subPageUrlKey;
return path && path.split( splitkey )[0].split( dialogHashKey )[0];
},
//set location hash to path
set: function( path ) {
location.hash = path;
},
//test if a given url (string) is a path
//NOTE might be exceptionally naive
isPath: function( url ) {
return ( /\// ).test( url );
},
//return a url path with the window's location protocol/hostname/pathname removed
clean: function( url ) {
return url.replace( documentBase.domain, "" );
},
//just return the url without an initial #
stripHash: function( url ) {
return url.replace( /^#/, "" );
},
//remove the preceding hash, any query params, and dialog notations
cleanHash: function( hash ) {
return path.stripHash( hash.replace( /\?.*$/, "" ).replace( dialogHashKey, "" ) );
},
//check whether a url is referencing the same domain, or an external domain or different protocol
//could be mailto, etc
isExternal: function( url ) {
var u = path.parseUrl( url );
return u.protocol && u.domain !== documentUrl.domain ? true : false;
},
hasProtocol: function( url ) {
return ( /^(:?\w+:)/ ).test( url );
},
//check if the specified url refers to the first page in the main application document.
isFirstPageUrl: function( url ) {
// We only deal with absolute paths.
var u = path.parseUrl( path.makeUrlAbsolute( url, documentBase ) ),
// Does the url have the same path as the document?
samePath = u.hrefNoHash === documentUrl.hrefNoHash || ( documentBaseDiffers && u.hrefNoHash === documentBase.hrefNoHash ),
// Get the first page element.
fp = $.mobile.firstPage,
// Get the id of the first page element if it has one.
fpId = fp && fp[0] ? fp[0].id : undefined;
// The url refers to the first page if the path matches the document and
// it either has no hash value, or the hash is exactly equal to the id of the
// first page element.
return samePath && ( !u.hash || u.hash === "#" || ( fpId && u.hash.replace( /^#/, "" ) === fpId ) );
},
isEmbeddedPage: function( url ) {
var u = path.parseUrl( url );
//if the path is absolute, then we need to compare the url against
//both the documentUrl and the documentBase. The main reason for this
//is that links embedded within external documents will refer to the
//application document, whereas links embedded within the application
//document will be resolved against the document base.
if ( u.protocol !== "" ) {
return ( u.hash && ( u.hrefNoHash === documentUrl.hrefNoHash || ( documentBaseDiffers && u.hrefNoHash === documentBase.hrefNoHash ) ) );
}
return (/^#/).test( u.href );
}
},
//will be defined when a link is clicked and given an active class
$activeClickedLink = null,
//urlHistory is purely here to make guesses at whether the back or forward button was clicked
//and provide an appropriate transition
urlHistory = {
// Array of pages that are visited during a single page load.
// Each has a url and optional transition, title, and pageUrl (which represents the file path, in cases where URL is obscured, such as dialogs)
stack: [],
//maintain an index number for the active page in the stack
activeIndex: 0,
//get active
getActive: function() {
return urlHistory.stack[ urlHistory.activeIndex ];
},
getPrev: function() {
return urlHistory.stack[ urlHistory.activeIndex - 1 ];
},
getNext: function() {
return urlHistory.stack[ urlHistory.activeIndex + 1 ];
},
// addNew is used whenever a new page is added
addNew: function( url, transition, title, pageUrl, role ) {
//if there's forward history, wipe it
if( urlHistory.getNext() ) {
urlHistory.clearForward();
}
urlHistory.stack.push( {url : url, transition: transition, title: title, pageUrl: pageUrl, role: role } );
urlHistory.activeIndex = urlHistory.stack.length - 1;
},
//wipe urls ahead of active index
clearForward: function() {
urlHistory.stack = urlHistory.stack.slice( 0, urlHistory.activeIndex + 1 );
},
directHashChange: function( opts ) {
var back , forward, newActiveIndex, prev = this.getActive();
// check if url isp in history and if it's ahead or behind current page
$.each( urlHistory.stack, function( i, historyEntry ) {
//if the url is in the stack, it's a forward or a back
if( opts.currentUrl === historyEntry.url ) {
//define back and forward by whether url is older or newer than current page
back = i < urlHistory.activeIndex;
forward = !back;
newActiveIndex = i;
}
});
// save new page index, null check to prevent falsey 0 result
this.activeIndex = newActiveIndex !== undefined ? newActiveIndex : this.activeIndex;
if( back ) {
( opts.either || opts.isBack )( true );
} else if( forward ) {
( opts.either || opts.isForward )( false );
}
},
//disable hashchange event listener internally to ignore one change
//toggled internally when location.hash is updated to match the url of a successful page load
ignoreNextHashChange: false
},
//define first selector to receive focus when a page is shown
focusable = "[tabindex],a,button:visible,select:visible,input",
//queue to hold simultanious page transitions
pageTransitionQueue = [],
//indicates whether or not page is in process of transitioning
isPageTransitioning = false,
//nonsense hash change key for dialogs, so they create a history entry
dialogHashKey = "&ui-state=dialog",
//existing base tag?
$base = $head.children( "base" ),
//tuck away the original document URL minus any fragment.
documentUrl = path.parseUrl( location.href ),
//if the document has an embedded base tag, documentBase is set to its
//initial value. If a base tag does not exist, then we default to the documentUrl.
documentBase = $base.length ? path.parseUrl( path.makeUrlAbsolute( $base.attr( "href" ), documentUrl.href ) ) : documentUrl,
//cache the comparison once.
documentBaseDiffers = ( documentUrl.hrefNoHash !== documentBase.hrefNoHash );
//base element management, defined depending on dynamic base tag support
var base = $.support.dynamicBaseTag ? {
//define base element, for use in routing asset urls that are referenced in Ajax-requested markup
element: ( $base.length ? $base : $( "<base>", { href: documentBase.hrefNoHash } ).prependTo( $head ) ),
//set the generated BASE element's href attribute to a new page's base path
set: function( href ) {
base.element.attr( "href", path.makeUrlAbsolute( href, documentBase ) );
},
//set the generated BASE element's href attribute to a new page's base path
reset: function() {
base.element.attr( "href", documentBase.hrefNoHash );
}
} : undefined;
/*
internal utility functions
--------------------------------------*/
//direct focus to the page title, or otherwise first focusable element
function reFocus( page ) {
var pageTitle = page.find( ".ui-title:eq(0)" );
if( pageTitle.length ) {
pageTitle.focus();
}
else{
page.focus();
}
}
//remove active classes after page transition or error
function removeActiveLinkClass( forceRemoval ) {
if( !!$activeClickedLink && ( !$activeClickedLink.closest( '.ui-page-active' ).length || forceRemoval ) ) {
$activeClickedLink.removeClass( $.mobile.activeBtnClass );
}
$activeClickedLink = null;
}
function releasePageTransitionLock() {
isPageTransitioning = false;
if( pageTransitionQueue.length > 0 ) {
$.mobile.changePage.apply( null, pageTransitionQueue.pop() );
}
}
// Save the last scroll distance per page, before it is hidden
var setLastScrollEnabled = true,
firstScrollElem, getScrollElem, setLastScroll, delayedSetLastScroll;
getScrollElem = function() {
var scrollElem = $window, activePage,
touchOverflow = $.support.touchOverflow && $.mobile.touchOverflowEnabled;
if( touchOverflow ){
activePage = $( ".ui-page-active" );
scrollElem = activePage.is( ".ui-native-fixed" ) ? activePage.find( ".ui-content" ) : activePage;
}
return scrollElem;
};
setLastScroll = function( scrollElem ) {
// this barrier prevents setting the scroll value based on the browser
// scrolling the window based on a hashchange
if( !setLastScrollEnabled ) {
return;
}
var active = $.mobile.urlHistory.getActive();
if( active ) {
var lastScroll = scrollElem && scrollElem.scrollTop();
// Set active page's lastScroll prop.
// If the location we're scrolling to is less than minScrollBack, let it go.
active.lastScroll = lastScroll < $.mobile.minScrollBack ? $.mobile.defaultHomeScroll : lastScroll;
}
};
// bind to scrollstop to gather scroll position. The delay allows for the hashchange
// event to fire and disable scroll recording in the case where the browser scrolls
// to the hash targets location (sometimes the top of the page). once pagechange fires
// getLastScroll is again permitted to operate
delayedSetLastScroll = function() {
setTimeout( setLastScroll, 100, $(this) );
};
// disable an scroll setting when a hashchange has been fired, this only works
// because the recording of the scroll position is delayed for 100ms after
// the browser might have changed the position because of the hashchange
$window.bind( $.support.pushState ? "popstate" : "hashchange", function() {
setLastScrollEnabled = false;
});
// handle initial hashchange from chrome :(
$window.one( $.support.pushState ? "popstate" : "hashchange", function() {
setLastScrollEnabled = true;
});
// wait until the mobile page container has been determined to bind to pagechange
$window.one( "pagecontainercreate", function(){
// once the page has changed, re-enable the scroll recording
$.mobile.pageContainer.bind( "pagechange", function() {
var scrollElem = getScrollElem();
setLastScrollEnabled = true;
// remove any binding that previously existed on the get scroll
// which may or may not be different than the scroll element determined for
// this page previously
scrollElem.unbind( "scrollstop", delayedSetLastScroll );
// determine and bind to the current scoll element which may be the window
// or in the case of touch overflow the element with touch overflow
scrollElem.bind( "scrollstop", delayedSetLastScroll );
});
});
// bind to scrollstop for the first page as "pagechange" won't be fired in that case
getScrollElem().bind( "scrollstop", delayedSetLastScroll );
// Make the iOS clock quick-scroll work again if we're using native overflow scrolling
/*
if( $.support.touchOverflow ){
if( $.mobile.touchOverflowEnabled ){
$( window ).bind( "scrollstop", function(){
if( $( this ).scrollTop() === 0 ){
$.mobile.activePage.scrollTop( 0 );
}
});
}
}
*/
//function for transitioning between two existing pages
function transitionPages( toPage, fromPage, transition, reverse ) {
//get current scroll distance
var active = $.mobile.urlHistory.getActive(),
touchOverflow = $.support.touchOverflow && $.mobile.touchOverflowEnabled,
toScroll = active.lastScroll || ( touchOverflow ? 0 : $.mobile.defaultHomeScroll ),
screenHeight = getScreenHeight();
// Scroll to top, hide addr bar
window.scrollTo( 0, $.mobile.defaultHomeScroll );
if( fromPage ) {
//trigger before show/hide events
fromPage.data( "page" )._trigger( "beforehide", null, { nextPage: toPage } );
}
if( !touchOverflow){
toPage.height( screenHeight + toScroll );
}
toPage.data( "page" )._trigger( "beforeshow", null, { prevPage: fromPage || $( "" ) } );
//clear page loader
$.mobile.hidePageLoadingMsg();
if( touchOverflow && toScroll ){
toPage.addClass( "ui-mobile-pre-transition" );
// Send focus to page as it is now display: block
reFocus( toPage );
//set page's scrollTop to remembered distance
if( toPage.is( ".ui-native-fixed" ) ){
toPage.find( ".ui-content" ).scrollTop( toScroll );
}
else{
toPage.scrollTop( toScroll );
}
}
//find the transition handler for the specified transition. If there
//isn't one in our transitionHandlers dictionary, use the default one.
//call the handler immediately to kick-off the transition.
var th = $.mobile.transitionHandlers[transition || "none"] || $.mobile.defaultTransitionHandler,
promise = th( transition, reverse, toPage, fromPage );
promise.done(function() {
//reset toPage height back
if( !touchOverflow ){
toPage.height( "" );
// Send focus to the newly shown page
reFocus( toPage );
}
// Jump to top or prev scroll, sometimes on iOS the page has not rendered yet.
if( !touchOverflow ){
$.mobile.silentScroll( toScroll );
}
//trigger show/hide events
if( fromPage ) {
if( !touchOverflow ){
fromPage.height( "" );
}
fromPage.data( "page" )._trigger( "hide", null, { nextPage: toPage } );
}
//trigger pageshow, define prevPage as either fromPage or empty jQuery obj
toPage.data( "page" )._trigger( "show", null, { prevPage: fromPage || $( "" ) } );
});
return promise;
}
//simply set the active page's minimum height to screen height, depending on orientation
function getScreenHeight(){
var orientation = $.event.special.orientationchange.orientation(),
port = orientation === "portrait",
winMin = port ? 480 : 320,
screenHeight = port ? screen.availHeight : screen.availWidth,
winHeight = Math.max( winMin, $( window ).height() ),
pageMin = Math.min( screenHeight, winHeight );
return pageMin;
}
$.mobile.getScreenHeight = getScreenHeight;
//simply set the active page's minimum height to screen height, depending on orientation
function resetActivePageHeight(){
// Don't apply this height in touch overflow enabled mode
if( $.support.touchOverflow && $.mobile.touchOverflowEnabled ){
return;
}
$( "." + $.mobile.activePageClass ).css( "min-height", getScreenHeight() );
}
//shared page enhancements
function enhancePage( $page, role ) {
// If a role was specified, make sure the data-role attribute
// on the page element is in sync.
if( role ) {
$page.attr( "data-" + $.mobile.ns + "role", role );
}
//run page plugin
$page.page();
}
/* exposed $.mobile methods */
//animation complete callback
$.fn.animationComplete = function( callback ) {
if( $.support.cssTransitions ) {
return $( this ).one( 'webkitAnimationEnd', callback );
}
else{
// defer execution for consistency between webkit/non webkit
setTimeout( callback, 0 );
return $( this );
}
};
//expose path object on $.mobile
$.mobile.path = path;
//expose base object on $.mobile
$.mobile.base = base;
//history stack
$.mobile.urlHistory = urlHistory;
$.mobile.dialogHashKey = dialogHashKey;
//default non-animation transition handler
$.mobile.noneTransitionHandler = function( name, reverse, $toPage, $fromPage ) {
if ( $fromPage ) {
$fromPage.removeClass( $.mobile.activePageClass );
}
$toPage.addClass( $.mobile.activePageClass );
return $.Deferred().resolve( name, reverse, $toPage, $fromPage ).promise();
};
//default handler for unknown transitions
$.mobile.defaultTransitionHandler = $.mobile.noneTransitionHandler;
//transition handler dictionary for 3rd party transitions
$.mobile.transitionHandlers = {
none: $.mobile.defaultTransitionHandler
};
//enable cross-domain page support
$.mobile.allowCrossDomainPages = false;
//return the original document url
$.mobile.getDocumentUrl = function(asParsedObject) {
return asParsedObject ? $.extend( {}, documentUrl ) : documentUrl.href;
};
//return the original document base url
$.mobile.getDocumentBase = function(asParsedObject) {
return asParsedObject ? $.extend( {}, documentBase ) : documentBase.href;
};
$.mobile._bindPageRemove = function() {
var page = $(this);
// when dom caching is not enabled or the page is embedded bind to remove the page on hide
if( !page.data("page").options.domCache
&& page.is(":jqmData(external-page='true')") ) {
page.bind( 'pagehide.remove', function() {
var $this = $( this ),
prEvent = new $.Event( "pageremove" );
$this.trigger( prEvent );
if( !prEvent.isDefaultPrevented() ){
$this.removeWithDependents();
}
});
}
};
// Load a page into the DOM.
$.mobile.loadPage = function( url, options ) {
// This function uses deferred notifications to let callers
// know when the page is done loading, or if an error has occurred.
var deferred = $.Deferred(),
// The default loadPage options with overrides specified by
// the caller.
settings = $.extend( {}, $.mobile.loadPage.defaults, options ),
// The DOM element for the page after it has been loaded.
page = null,
// If the reloadPage option is true, and the page is already
// in the DOM, dupCachedPage will be set to the page element
// so that it can be removed after the new version of the
// page is loaded off the network.
dupCachedPage = null,
// determine the current base url
findBaseWithDefault = function(){
var closestBase = ( $.mobile.activePage && getClosestBaseUrl( $.mobile.activePage ) );
return closestBase || documentBase.hrefNoHash;
},
// The absolute version of the URL passed into the function. This
// version of the URL may contain dialog/subpage params in it.
absUrl = path.makeUrlAbsolute( url, findBaseWithDefault() );
// If the caller provided data, and we're using "get" request,
// append the data to the URL.
if ( settings.data && settings.type === "get" ) {
absUrl = path.addSearchParams( absUrl, settings.data );
settings.data = undefined;
}
// If the caller is using a "post" request, reloadPage must be true
if( settings.data && settings.type === "post" ){
settings.reloadPage = true;
}
// The absolute version of the URL minus any dialog/subpage params.
// In otherwords the real URL of the page to be loaded.
var fileUrl = path.getFilePath( absUrl ),
// The version of the Url actually stored in the data-url attribute of
// the page. For embedded pages, it is just the id of the page. For pages
// within the same domain as the document base, it is the site relative
// path. For cross-domain pages (Phone Gap only) the entire absolute Url
// used to load the page.
dataUrl = path.convertUrlToDataUrl( absUrl );
// Make sure we have a pageContainer to work with.
settings.pageContainer = settings.pageContainer || $.mobile.pageContainer;
// Check to see if the page already exists in the DOM.
page = settings.pageContainer.children( ":jqmData(url='" + dataUrl + "')" );
// If we failed to find the page, check to see if the url is a
// reference to an embedded page. If so, it may have been dynamically
// injected by a developer, in which case it would be lacking a data-url
// attribute and in need of enhancement.
if ( page.length === 0 && dataUrl && !path.isPath( dataUrl ) ) {
page = settings.pageContainer.children( "#" + dataUrl )
.attr( "data-" + $.mobile.ns + "url", dataUrl );
}
// If we failed to find a page in the DOM, check the URL to see if it
// refers to the first page in the application. If it isn't a reference
// to the first page and refers to non-existent embedded page, error out.
if ( page.length === 0 ) {
if ( $.mobile.firstPage && path.isFirstPageUrl( fileUrl ) ) {
page = $( $.mobile.firstPage );
} else if ( path.isEmbeddedPage( fileUrl ) ) {
deferred.reject( absUrl, options );
return deferred.promise();
}
}
// Reset base to the default document base.
if ( base ) {
base.reset();
}
// If the page we are interested in is already in the DOM,
// and the caller did not indicate that we should force a
// reload of the file, we are done. Otherwise, track the
// existing page as a duplicated.
if ( page.length ) {
if ( !settings.reloadPage ) {
enhancePage( page, settings.role );
deferred.resolve( absUrl, options, page );
return deferred.promise();
}
dupCachedPage = page;
}
var mpc = settings.pageContainer,
pblEvent = new $.Event( "pagebeforeload" ),
triggerData = { url: url, absUrl: absUrl, dataUrl: dataUrl, deferred: deferred, options: settings };
// Let listeners know we're about to load a page.
mpc.trigger( pblEvent, triggerData );
// If the default behavior is prevented, stop here!
if( pblEvent.isDefaultPrevented() ){
return deferred.promise();
}
if ( settings.showLoadMsg ) {
// This configurable timeout allows cached pages a brief delay to load without showing a message
var loadMsgDelay = setTimeout(function(){
$.mobile.showPageLoadingMsg();
}, settings.loadMsgDelay ),
// Shared logic for clearing timeout and removing message.
hideMsg = function(){
// Stop message show timer
clearTimeout( loadMsgDelay );
// Hide loading message
$.mobile.hidePageLoadingMsg();
};
}
if ( !( $.mobile.allowCrossDomainPages || path.isSameDomain( documentUrl, absUrl ) ) ) {
deferred.reject( absUrl, options );
} else {
// Load the new page.
$.ajax({
url: fileUrl,
type: settings.type,
data: settings.data,
dataType: "html",
success: function( html, textStatus, xhr ) {
//pre-parse html to check for a data-url,
//use it as the new fileUrl, base path, etc
var all = $( "<div></div>" ),
//page title regexp
newPageTitle = html.match( /<title[^>]*>([^<]*)/ ) && RegExp.$1,
// TODO handle dialogs again
pageElemRegex = new RegExp( "(<[^>]+\\bdata-" + $.mobile.ns + "role=[\"']?page[\"']?[^>]*>)" ),
dataUrlRegex = new RegExp( "\\bdata-" + $.mobile.ns + "url=[\"']?([^\"'>]*)[\"']?" );
// data-url must be provided for the base tag so resource requests can be directed to the
// correct url. loading into a temprorary element makes these requests immediately
if( pageElemRegex.test( html )
&& RegExp.$1
&& dataUrlRegex.test( RegExp.$1 )
&& RegExp.$1 ) {
url = fileUrl = path.getFilePath( RegExp.$1 );
}
if ( base ) {
base.set( fileUrl );
}
//workaround to allow scripts to execute when included in page divs
all.get( 0 ).innerHTML = html;
page = all.find( ":jqmData(role='page'), :jqmData(role='dialog')" ).first();
//if page elem couldn't be found, create one and insert the body element's contents
if( !page.length ){
page = $( "<div data-" + $.mobile.ns + "role='page'>" + html.split( /<\/?body[^>]*>/gmi )[1] + "</div>" );
}
if ( newPageTitle && !page.jqmData( "title" ) ) {
page.jqmData( "title", newPageTitle );
}
//rewrite src and href attrs to use a base url
if( !$.support.dynamicBaseTag ) {
var newPath = path.get( fileUrl );
page.find( "[src], link[href], a[rel='external'], :jqmData(ajax='false'), a[target]" ).each(function() {
var thisAttr = $( this ).is( '[href]' ) ? 'href' :
$(this).is('[src]') ? 'src' : 'action',
thisUrl = $( this ).attr( thisAttr );
// XXX_jblas: We need to fix this so that it removes the document
// base URL, and then prepends with the new page URL.
//if full path exists and is same, chop it - helps IE out
thisUrl = thisUrl.replace( location.protocol + '//' + location.host + location.pathname, '' );
if( !/^(\w+:|#|\/)/.test( thisUrl ) ) {
$( this ).attr( thisAttr, newPath + thisUrl );
}
});
}
//append to page and enhance
// TODO taging a page with external to make sure that embedded pages aren't removed
// by the various page handling code is bad. Having page handling code in many
// places is bad. Solutions post 1.0
page
.attr( "data-" + $.mobile.ns + "url", path.convertUrlToDataUrl( fileUrl ) )
.attr( "data-" + $.mobile.ns + "external-page", true )
.appendTo( settings.pageContainer );
// wait for page creation to leverage options defined on widget
page.one( 'pagecreate', $.mobile._bindPageRemove );
enhancePage( page, settings.role );
// Enhancing the page may result in new dialogs/sub pages being inserted
// into the DOM. If the original absUrl refers to a sub-page, that is the
// real page we are interested in.
if ( absUrl.indexOf( "&" + $.mobile.subPageUrlKey ) > -1 ) {
page = settings.pageContainer.children( ":jqmData(url='" + dataUrl + "')" );
}
//bind pageHide to removePage after it's hidden, if the page options specify to do so
// Remove loading message.
if ( settings.showLoadMsg ) {
hideMsg();
}
// Add the page reference and xhr to our triggerData.
triggerData.xhr = xhr;
triggerData.textStatus = textStatus;
triggerData.page = page;
// Let listeners know the page loaded successfully.
settings.pageContainer.trigger( "pageload", triggerData );
deferred.resolve( absUrl, options, page, dupCachedPage );
},
error: function( xhr, textStatus, errorThrown ) {
//set base back to current path
if( base ) {
base.set( path.get() );
}
// Add error info to our triggerData.
triggerData.xhr = xhr;
triggerData.textStatus = textStatus;
triggerData.errorThrown = errorThrown;
var plfEvent = new $.Event( "pageloadfailed" );
// Let listeners know the page load failed.
settings.pageContainer.trigger( plfEvent, triggerData );
// If the default behavior is prevented, stop here!
// Note that it is the responsibility of the listener/handler
// that called preventDefault(), to resolve/reject the
// deferred object within the triggerData.
if( plfEvent.isDefaultPrevented() ){
return;
}
// Remove loading message.
if ( settings.showLoadMsg ) {
// Remove loading message.
hideMsg();
//show error message
$( "<div class='ui-loader ui-overlay-shadow ui-body-e ui-corner-all'><h1>"+ $.mobile.pageLoadErrorMessage +"</h1></div>" )
.css({ "display": "block", "opacity": 0.96, "top": $window.scrollTop() + 100 })
.appendTo( settings.pageContainer )
.delay( 800 )
.fadeOut( 400, function() {
$( this ).remove();
});
}
deferred.reject( absUrl, options );
}
});
}
return deferred.promise();
};
$.mobile.loadPage.defaults = {
type: "get",
data: undefined,
reloadPage: false,
role: undefined, // By default we rely on the role defined by the @data-role attribute.
showLoadMsg: false,
pageContainer: undefined,
loadMsgDelay: 50 // This delay allows loads that pull from browser cache to occur without showing the loading message.
};
// Show a specific page in the page container.
$.mobile.changePage = function( toPage, options ) {
// If we are in the midst of a transition, queue the current request.
// We'll call changePage() once we're done with the current transition to
// service the request.
if( isPageTransitioning ) {
pageTransitionQueue.unshift( arguments );
return;
}
var settings = $.extend( {}, $.mobile.changePage.defaults, options );
// Make sure we have a pageContainer to work with.
settings.pageContainer = settings.pageContainer || $.mobile.pageContainer;
// Make sure we have a fromPage.
settings.fromPage = settings.fromPage || $.mobile.activePage;
var mpc = settings.pageContainer,
pbcEvent = new $.Event( "pagebeforechange" ),
triggerData = { toPage: toPage, options: settings };
// Let listeners know we're about to change the current page.
mpc.trigger( pbcEvent, triggerData );
// If the default behavior is prevented, stop here!
if( pbcEvent.isDefaultPrevented() ){
return;
}
// We allow "pagebeforechange" observers to modify the toPage in the trigger
// data to allow for redirects. Make sure our toPage is updated.