jquery-mobile/js/jquery.mobile.init.js

109 lines
3.6 KiB
JavaScript

/*!
* jQuery Mobile v@VERSION
* http://jquerymobile.com/
*
* Copyright 2010, jQuery Project
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*/
(function( $, window, undefined ) {
var $html = $( "html" ),
$head = $( "head" ),
$window = $( window );
//trigger mobileinit event - useful hook for configuring $.mobile settings before they're used
$( window.document ).trigger( "mobileinit" );
//support conditions
//if device support condition(s) aren't met, leave things as they are -> a basic, usable experience,
//otherwise, proceed with the enhancements
if ( !$.mobile.gradeA() ) {
return;
}
//add mobile, initial load "rendering" classes to docEl
$html.addClass( "ui-mobile ui-mobile-rendering" );
//define & prepend meta viewport tag, if content is defined
//NOTE: this is now deprecated. We recommend placing the meta viewport element in
//the markup from the start.
$.mobile.metaViewportContent && !$head.find( "meta[name='viewport']" ).length ? $( "<meta>", { name: "viewport", content: $.mobile.metaViewportContent}).prependTo( $head ) : undefined;
//loading div which appears during Ajax requests
//will not appear if $.mobile.loadingMessage is false
var $loader = $.mobile.loadingMessage ? $( "<div class='ui-loader ui-body-a ui-corner-all'>" + "<span class='ui-icon ui-icon-loading spin'></span>" + "<h1>" + $.mobile.loadingMessage + "</h1>" + "</div>" ) : undefined;
if(typeof $loader === "undefined"){
alert($.mobile.loadingMessage);
}
$.extend($.mobile, {
// turn on/off page loading message.
pageLoading: function ( done ) {
if ( done ) {
$html.removeClass( "ui-loading" );
} else {
if( $.mobile.loadingMessage ){
var activeBtn = $( "." + $.mobile.activeBtnClass ).first();
if(typeof $loader === "undefined"){
alert($.mobile.loadingMessage);
}
$loader
.appendTo( $.mobile.pageContainer )
//position at y center (if scrollTop supported), above the activeBtn (if defined), or just 100px from top
.css( {
top: $.support.scrollTop && $(window).scrollTop() + $(window).height() / 2 ||
activeBtn.length && activeBtn.offset().top || 100
} );
}
$html.addClass( "ui-loading" );
}
},
// find and enhance the pages in the dom and transition to the first page.
initializePage: function(){
//find present pages
var $pages = $( ":jqmData(role='page')" );
//add dialogs, set data-url attrs
$pages.add( ":jqmData(role='dialog')" ).each(function(){
var $this = $(this);
// unless the data url is already set set it to the id
if( !$this.jqmData('url') ){
$this.attr( "data-" + $.mobile.ns + "url", $this.attr( "id" ) );
}
});
//define first page in dom case one backs out to the directory root (not always the first page visited, but defined as fallback)
$.mobile.firstPage = $pages.first();
//define page container
$.mobile.pageContainer = $pages.first().parent().addClass( "ui-mobile-viewport" );
//cue page loading message
$.mobile.pageLoading();
// if hashchange listening is disabled or there's no hash deeplink, change to the first page in the DOM
if( !$.mobile.hashListeningEnabled || !$.mobile.path.stripHash( location.hash ) ){
$.mobile.changePage( $.mobile.firstPage, false, true, false, true );
}
// otherwise, trigger a hashchange to load a deeplink
else {
$window.trigger( "hashchange", [ true ] );
}
}
});
//dom-ready inits
$( $.mobile.initializePage );
//window load event
//hide iOS browser chrome on load
$window.load( $.mobile.silentScroll );
})( jQuery, this );