//>>excludeStart("jqmBuildExclude", pragmas.jqmBuildExclude);
//>>description: Assorted support tests.
//>>label: Support Tests
//>>group: core
//>>required: true
// For test purposes we can't use anonymous module here otherwise
// the tests will throw http://requirejs.org/docs/errors.html#mismatch
define( "jquery.mobile.support", [ "jquery", "jquery.mobile.media" ], function( $ ) {
//>>excludeEnd("jqmBuildExclude");
(function( $, undefined ) {
var fakeBody = $( "" ).prependTo( "html" ),
fbCSS = fakeBody[ 0 ].style,
vendors = [ "Webkit", "Moz", "O" ],
webos = "palmGetResource" in window, //only used to rule out scrollTop
operamini = window.operamini && ({}).toString.call( window.operamini ) === "[object OperaMini]",
bb = window.blackberry; //only used to rule out box shadow, as it's filled opaque on BB
// thx Modernizr
function propExists( prop ) {
var uc_prop = prop.charAt( 0 ).toUpperCase() + prop.substr( 1 ),
props = ( prop + " " + vendors.join( uc_prop + " " ) + uc_prop ).split( " " );
for ( var v in props ){
if ( fbCSS[ props[ v ] ] !== undefined ) {
return true;
}
}
}
function validStyle( prop, value, check_vend ) {
var div = document.createElement('div'),
uc = function( txt ) {
return txt.charAt( 0 ).toUpperCase() + txt.substr( 1 )
},
vend_pref = function( vend ) {
return "-" + vend.charAt( 0 ).toLowerCase() + vend.substr( 1 ) + "-";
},
check_style = function( vend ) {
var vend_prop = vend_pref( vend ) + prop + ": " + value + ";",
uc_vend = uc( vend ),
propStyle = uc_vend + uc( prop );
div.setAttribute( "style", vend_prop );
if( !!div.style[ propStyle ] ) {
ret = true;
}
},
check_vends = check_vend ? [ check_vend ] : vendors,
ret;
for( i = 0; i < check_vends.length; i++ ) {
check_style( check_vends[i] );
}
return !!ret;
}
// Thanks to Modernizr src for this test idea. `perspective` check is limited to Moz to prevent a false positive for 3D transforms on Android.
function transform3dTest() {
var prop = "transform-3d";
return validStyle( 'perspective', '10px', 'moz' ) || $.mobile.media( "(-" + vendors.join( "-" + prop + "),(-" ) + "-" + prop + "),(" + prop + ")" );
}
// Test for dynamic-updating base tag support ( allows us to avoid href,src attr rewriting )
function baseTagTest() {
var fauxBase = location.protocol + "//" + location.host + location.pathname + "ui-dir/",
base = $( "head base" ),
fauxEle = null,
href = "",
link, rebase;
if ( !base.length ) {
base = fauxEle = $( "", { "href": fauxBase }).appendTo( "head" );
} else {
href = base.attr( "href" );
}
link = $( "" ).prependTo( fakeBody );
rebase = link[ 0 ].href;
base[ 0 ].href = href || location.pathname;
if ( fauxEle ) {
fauxEle.remove();
}
return rebase.indexOf( fauxBase ) === 0;
}
// non-UA-based IE version check by James Padolsey, modified by jdalton - from http://gist.github.com/527683
// allows for inclusion of IE 6+, including Windows Mobile 7
$.extend( $.mobile, { browser: {} } );
$.mobile.browser.ie = (function() {
var v = 3,
div = document.createElement( "div" ),
a = div.all || [];
// added {} to silence closure compiler warnings. registering my dislike of all things
// overly clever here for future reference
while ( div.innerHTML = "", a[ 0 ] ){};
return v > 4 ? v : !v;
})();
$.extend( $.support, {
orientation: "orientation" in window && "onorientationchange" in window,
touch: "ontouchend" in document,
cssTransitions: "WebKitTransitionEvent" in window || validStyle( 'transition', 'height 100ms linear' ),
pushState: "pushState" in history && "replaceState" in history,
mediaquery: $.mobile.media( "only all" ),
cssPseudoElement: !!propExists( "content" ),
touchOverflow: !!propExists( "overflowScrolling" ),
cssTransform3d: transform3dTest(),
boxShadow: !!propExists( "boxShadow" ) && !bb,
scrollTop: ( "pageXOffset" in window || "scrollTop" in document.documentElement || "scrollTop" in fakeBody[ 0 ] ) && !webos && !operamini,
dynamicBaseTag: baseTagTest()
});
fakeBody.remove();
// $.mobile.ajaxBlacklist is used to override ajaxEnabled on platforms that have known conflicts with hash history updates (BB5, Symbian)
// or that generally work better browsing in regular http for full page refreshes (Opera Mini)
// Note: This detection below is used as a last resort.
// We recommend only using these detection methods when all other more reliable/forward-looking approaches are not possible
var nokiaLTE7_3 = (function(){
var ua = window.navigator.userAgent;
//The following is an attempt to match Nokia browsers that are running Symbian/s60, with webkit, version 7.3 or older
return ua.indexOf( "Nokia" ) > -1 &&
( ua.indexOf( "Symbian/3" ) > -1 || ua.indexOf( "Series60/5" ) > -1 ) &&
ua.indexOf( "AppleWebKit" ) > -1 &&
ua.match( /(BrowserNG|NokiaBrowser)\/7\.[0-3]/ );
})();
$.mobile.ajaxBlacklist =
// BlackBerry browsers, pre-webkit
window.blackberry && !window.WebKitPoint ||
// Opera Mini
operamini ||
// Symbian webkits pre 7.3
nokiaLTE7_3;
// Lastly, this workaround is the only way we've found so far to get pre 7.3 Symbian webkit devices
// to render the stylesheets when they're referenced before this script, as we'd recommend doing.
// This simply reappends the CSS in place, which for some reason makes it apply
if ( nokiaLTE7_3 ) {
$(function() {
$( "head link[rel='stylesheet']" ).attr( "rel", "alternate stylesheet" ).attr( "rel", "stylesheet" );
});
}
// For ruling out shadows via css
if ( !$.support.boxShadow ) {
$( "html" ).addClass( "ui-mobile-nosupport-boxshadow" );
}
})( jQuery );
//>>excludeStart("jqmBuildExclude", pragmas.jqmBuildExclude);
});
//>>excludeEnd("jqmBuildExclude");