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source: trunk/themes/default/js/ui/jquery.ui.dialog.js @ 18630

Last change on this file since 18630 was 18630, checked in by rvelices, 12 years ago
feature 2771: upgrade jquery from 1.7.2 to 1.8.2 and jquery.ui from 1.8.16 to 1.9.0 Attention plugins: jquery ui effect script ids change when using combine_script because file names changed ...
File size: 20.9 KB

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1	/*!
2	* jQuery UI Dialog 1.9.0
3	* http://jqueryui.com
4	*
5	* Copyright 2012 jQuery Foundation and other contributors
6	* Released under the MIT license.
7	* http://jquery.org/license
8	*
9	* http://api.jqueryui.com/dialog/
10	*
11	* Depends:
12	* jquery.ui.core.js
13	* jquery.ui.widget.js
14	* jquery.ui.button.js
15	* jquery.ui.draggable.js
16	* jquery.ui.mouse.js
17	* jquery.ui.position.js
18	* jquery.ui.resizable.js
19	*/
20	(function( $, undefined ) {
21
22	var uiDialogClasses = "ui-dialog ui-widget ui-widget-content ui-corner-all ",
23	sizeRelatedOptions = {
24	buttons: true,
25	height: true,
26	maxHeight: true,
27	maxWidth: true,
28	minHeight: true,
29	minWidth: true,
30	width: true
31	},
32	resizableRelatedOptions = {
33	maxHeight: true,
34	maxWidth: true,
35	minHeight: true,
36	minWidth: true
37	};
38
39	$.widget("ui.dialog", {
40	version: "1.9.0",
41	options: {
42	autoOpen: true,
43	buttons: {},
44	closeOnEscape: true,
45	closeText: "close",
46	dialogClass: "",
47	draggable: true,
48	hide: null,
49	height: "auto",
50	maxHeight: false,
51	maxWidth: false,
52	minHeight: 150,
53	minWidth: 150,
54	modal: false,
55	position: {
56	my: "center",
57	at: "center",
58	of: window,
59	collision: "fit",
60	// ensure that the titlebar is never outside the document
61	using: function( pos ) {
62	var topOffset = $( this ).css( pos ).offset().top;
63	if ( topOffset < 0 ) {
64	$( this ).css( "top", pos.top - topOffset );
65	}
66	}
67	},
68	resizable: true,
69	show: null,
70	stack: true,
71	title: "",
72	width: 300,
73	zIndex: 1000
74	},
75
76	_create: function() {
77	this.originalTitle = this.element.attr( "title" );
78	// #5742 - .attr() might return a DOMElement
79	if ( typeof this.originalTitle !== "string" ) {
80	this.originalTitle = "";
81	}
82	this.oldPosition = {
83	parent: this.element.parent(),
84	index: this.element.parent().children().index( this.element )
85	};
86	this.options.title = this.options.title \|\| this.originalTitle;
87	var that = this,
88	options = this.options,
89
90	title = options.title \|\| " ",
91
92	uiDialog = ( this.uiDialog = $( "<div>" ) )
93	.addClass( uiDialogClasses + options.dialogClass )
94	.css({
95	display: "none",
96	outline: 0, // TODO: move to stylesheet
97	zIndex: options.zIndex
98	})
99	// setting tabIndex makes the div focusable
100	.attr( "tabIndex", -1)
101	.keydown(function( event ) {
102	if ( options.closeOnEscape && !event.isDefaultPrevented() && event.keyCode &&
103	event.keyCode === $.ui.keyCode.ESCAPE ) {
104	that.close( event );
105	event.preventDefault();
106	}
107	})
108	.mousedown(function( event ) {
109	that.moveToTop( false, event );
110	})
111	.appendTo( "body" ),
112
113	uiDialogContent = this.element
114	.show()
115	.removeAttr( "title" )
116	.addClass( "ui-dialog-content ui-widget-content" )
117	.appendTo( uiDialog ),
118
119	uiDialogTitlebar = ( this.uiDialogTitlebar = $( "<div>" ) )
120	.addClass( "ui-dialog-titlebar ui-widget-header " +
121	"ui-corner-all ui-helper-clearfix" )
122	.prependTo( uiDialog ),
123
124	uiDialogTitlebarClose = $( "<a href='#'></a>" )
125	.addClass( "ui-dialog-titlebar-close ui-corner-all" )
126	.attr( "role", "button" )
127	.click(function( event ) {
128	event.preventDefault();
129	that.close( event );
130	})
131	.appendTo( uiDialogTitlebar ),
132
133	uiDialogTitlebarCloseText = ( this.uiDialogTitlebarCloseText = $( "<span>" ) )
134	.addClass( "ui-icon ui-icon-closethick" )
135	.text( options.closeText )
136	.appendTo( uiDialogTitlebarClose ),
137
138	uiDialogTitle = $( "<span>" )
139	.uniqueId()
140	.addClass( "ui-dialog-title" )
141	.html( title )
142	.prependTo( uiDialogTitlebar ),
143
144	uiDialogButtonPane = ( this.uiDialogButtonPane = $( "<div>" ) )
145	.addClass( "ui-dialog-buttonpane ui-widget-content ui-helper-clearfix" ),
146
147	uiButtonSet = ( this.uiButtonSet = $( "<div>" ) )
148	.addClass( "ui-dialog-buttonset" )
149	.appendTo( uiDialogButtonPane );
150
151	uiDialog.attr({
152	role: "dialog",
153	"aria-labelledby": uiDialogTitle.attr( "id" )
154	});
155
156	uiDialogTitlebar.find( "*" ).add( uiDialogTitlebar ).disableSelection();
157	this._hoverable( uiDialogTitlebarClose );
158	this._focusable( uiDialogTitlebarClose );
159
160	if ( options.draggable && $.fn.draggable ) {
161	this._makeDraggable();
162	}
163	if ( options.resizable && $.fn.resizable ) {
164	this._makeResizable();
165	}
166
167	this._createButtons( options.buttons );
168	this._isOpen = false;
169
170	if ( $.fn.bgiframe ) {
171	uiDialog.bgiframe();
172	}
173
174	// prevent tabbing out of modal dialogs
175	this._on( uiDialog, { keydown: function( event ) {
176	if ( !options.modal \|\| event.keyCode !== $.ui.keyCode.TAB ) {
177	return;
178	}
179
180	var tabbables = $( ":tabbable", uiDialog ),
181	first = tabbables.filter( ":first" ),
182	last = tabbables.filter( ":last" );
183
184	if ( event.target === last[0] && !event.shiftKey ) {
185	first.focus( 1 );
186	return false;
187	} else if ( event.target === first[0] && event.shiftKey ) {
188	last.focus( 1 );
189	return false;
190	}
191	}});
192	},
193
194	_init: function() {
195	if ( this.options.autoOpen ) {
196	this.open();
197	}
198	},
199
200	_destroy: function() {
201	var next,
202	oldPosition = this.oldPosition;
203
204	if ( this.overlay ) {
205	this.overlay.destroy();
206	}
207	this.uiDialog.hide();
208	this.element
209	.removeClass( "ui-dialog-content ui-widget-content" )
210	.hide()
211	.appendTo( "body" );
212	this.uiDialog.remove();
213
214	if ( this.originalTitle ) {
215	this.element.attr( "title", this.originalTitle );
216	}
217
218	next = oldPosition.parent.children().eq( oldPosition.index );
219	// Don't try to place the dialog next to itself (#8613)
220	if ( next.length && next[ 0 ] !== this.element[ 0 ] ) {
221	next.before( this.element );
222	} else {
223	oldPosition.parent.append( this.element );
224	}
225	},
226
227	widget: function() {
228	return this.uiDialog;
229	},
230
231	close: function( event ) {
232	var that = this,
233	maxZ, thisZ;
234
235	if ( !this._isOpen ) {
236	return;
237	}
238
239	if ( false === this._trigger( "beforeClose", event ) ) {
240	return;
241	}
242
243	this._isOpen = false;
244
245	if ( this.overlay ) {
246	this.overlay.destroy();
247	}
248
249	if ( this.options.hide ) {
250	this.uiDialog.hide( this.options.hide, function() {
251	that._trigger( "close", event );
252	});
253	} else {
254	this.uiDialog.hide();
255	this._trigger( "close", event );
256	}
257
258	$.ui.dialog.overlay.resize();
259
260	// adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
261	if ( this.options.modal ) {
262	maxZ = 0;
263	$( ".ui-dialog" ).each(function() {
264	if ( this !== that.uiDialog[0] ) {
265	thisZ = $( this ).css( "z-index" );
266	if ( !isNaN( thisZ ) ) {
267	maxZ = Math.max( maxZ, thisZ );
268	}
269	}
270	});
271	$.ui.dialog.maxZ = maxZ;
272	}
273
274	return this;
275	},
276
277	isOpen: function() {
278	return this._isOpen;
279	},
280
281	// the force parameter allows us to move modal dialogs to their correct
282	// position on open
283	moveToTop: function( force, event ) {
284	var options = this.options,
285	saveScroll;
286
287	if ( ( options.modal && !force ) \|\|
288	( !options.stack && !options.modal ) ) {
289	return this._trigger( "focus", event );
290	}
291
292	if ( options.zIndex > $.ui.dialog.maxZ ) {
293	$.ui.dialog.maxZ = options.zIndex;
294	}
295	if ( this.overlay ) {
296	$.ui.dialog.maxZ += 1;
297	$.ui.dialog.overlay.maxZ = $.ui.dialog.maxZ;
298	this.overlay.$el.css( "z-index", $.ui.dialog.overlay.maxZ );
299	}
300
301	// Save and then restore scroll
302	// Opera 9.5+ resets when parent z-index is changed.
303	// http://bugs.jqueryui.com/ticket/3193
304	saveScroll = {
305	scrollTop: this.element.scrollTop(),
306	scrollLeft: this.element.scrollLeft()
307	};
308	$.ui.dialog.maxZ += 1;
309	this.uiDialog.css( "z-index", $.ui.dialog.maxZ );
310	this.element.attr( saveScroll );
311	this._trigger( "focus", event );
312
313	return this;
314	},
315
316	open: function() {
317	if ( this._isOpen ) {
318	return;
319	}
320
321	var hasFocus,
322	options = this.options,
323	uiDialog = this.uiDialog;
324
325	this._size();
326	this._position( options.position );
327	uiDialog.show( options.show );
328	this.overlay = options.modal ? new $.ui.dialog.overlay( this ) : null;
329	this.moveToTop( true );
330
331	// set focus to the first tabbable element in the content area or the first button
332	// if there are no tabbable elements, set focus on the dialog itself
333	hasFocus = this.element.find( ":tabbable" );
334	if ( !hasFocus.length ) {
335	hasFocus = this.uiDialogButtonPane.find( ":tabbable" );
336	if ( !hasFocus.length ) {
337	hasFocus = uiDialog;
338	}
339	}
340	hasFocus.eq( 0 ).focus();
341
342	this._isOpen = true;
343	this._trigger( "open" );
344
345	return this;
346	},
347
348	_createButtons: function( buttons ) {
349	var uiDialogButtonPane, uiButtonSet,
350	that = this,
351	hasButtons = false;
352
353	// if we already have a button pane, remove it
354	this.uiDialogButtonPane.remove();
355	this.uiButtonSet.empty();
356
357	if ( typeof buttons === "object" && buttons !== null ) {
358	$.each( buttons, function() {
359	return !(hasButtons = true);
360	});
361	}
362	if ( hasButtons ) {
363	$.each( buttons, function( name, props ) {
364	props = $.isFunction( props ) ?
365	{ click: props, text: name } :
366	props;
367	var button = $( "<button type='button'>" )
368	.attr( props, true )
369	.unbind( "click" )
370	.click(function() {
371	props.click.apply( that.element[0], arguments );
372	})
373	.appendTo( that.uiButtonSet );
374	if ( $.fn.button ) {
375	button.button();
376	}
377	});
378	this.uiDialog.addClass( "ui-dialog-buttons" );
379	this.uiDialogButtonPane.appendTo( this.uiDialog );
380	} else {
381	this.uiDialog.removeClass( "ui-dialog-buttons" );
382	}
383	},
384
385	_makeDraggable: function() {
386	var that = this,
387	options = this.options;
388
389	function filteredUi( ui ) {
390	return {
391	position: ui.position,
392	offset: ui.offset
393	};
394	}
395
396	this.uiDialog.draggable({
397	cancel: ".ui-dialog-content, .ui-dialog-titlebar-close",
398	handle: ".ui-dialog-titlebar",
399	containment: "document",
400	start: function( event, ui ) {
401	$( this )
402	.addClass( "ui-dialog-dragging" );
403	that._trigger( "dragStart", event, filteredUi( ui ) );
404	},
405	drag: function( event, ui ) {
406	that._trigger( "drag", event, filteredUi( ui ) );
407	},
408	stop: function( event, ui ) {
409	options.position = [
410	ui.position.left - that.document.scrollLeft(),
411	ui.position.top - that.document.scrollTop()
412	];
413	$( this )
414	.removeClass( "ui-dialog-dragging" );
415	that._trigger( "dragStop", event, filteredUi( ui ) );
416	$.ui.dialog.overlay.resize();
417	}
418	});
419	},
420
421	_makeResizable: function( handles ) {
422	handles = (handles === undefined ? this.options.resizable : handles);
423	var that = this,
424	options = this.options,
425	// .ui-resizable has position: relative defined in the stylesheet
426	// but dialogs have to use absolute or fixed positioning
427	position = this.uiDialog.css( "position" ),
428	resizeHandles = typeof handles === 'string' ?
429	handles :
430	"n,e,s,w,se,sw,ne,nw";
431
432	function filteredUi( ui ) {
433	return {
434	originalPosition: ui.originalPosition,
435	originalSize: ui.originalSize,
436	position: ui.position,
437	size: ui.size
438	};
439	}
440
441	this.uiDialog.resizable({
442	cancel: ".ui-dialog-content",
443	containment: "document",
444	alsoResize: this.element,
445	maxWidth: options.maxWidth,
446	maxHeight: options.maxHeight,
447	minWidth: options.minWidth,
448	minHeight: this._minHeight(),
449	handles: resizeHandles,
450	start: function( event, ui ) {
451	$( this ).addClass( "ui-dialog-resizing" );
452	that._trigger( "resizeStart", event, filteredUi( ui ) );
453	},
454	resize: function( event, ui ) {
455	that._trigger( "resize", event, filteredUi( ui ) );
456	},
457	stop: function( event, ui ) {
458	$( this ).removeClass( "ui-dialog-resizing" );
459	options.height = $( this ).height();
460	options.width = $( this ).width();
461	that._trigger( "resizeStop", event, filteredUi( ui ) );
462	$.ui.dialog.overlay.resize();
463	}
464	})
465	.css( "position", position )
466	.find( ".ui-resizable-se" )
467	.addClass( "ui-icon ui-icon-grip-diagonal-se" );
468	},
469
470	_minHeight: function() {
471	var options = this.options;
472
473	if ( options.height === "auto" ) {
474	return options.minHeight;
475	} else {
476	return Math.min( options.minHeight, options.height );
477	}
478	},
479
480	_position: function( position ) {
481	var myAt = [],
482	offset = [ 0, 0 ],
483	isVisible;
484
485	if ( position ) {
486	// deep extending converts arrays to objects in jQuery <= 1.3.2 :-(
487	// if (typeof position == 'string' \|\| $.isArray(position)) {
488	// myAt = $.isArray(position) ? position : position.split(' ');
489
490	if ( typeof position === "string" \|\| (typeof position === "object" && "0" in position ) ) {
491	myAt = position.split ? position.split( " " ) : [ position[ 0 ], position[ 1 ] ];
492	if ( myAt.length === 1 ) {
493	myAt[ 1 ] = myAt[ 0 ];
494	}
495
496	$.each( [ "left", "top" ], function( i, offsetPosition ) {
497	if ( +myAt[ i ] === myAt[ i ] ) {
498	offset[ i ] = myAt[ i ];
499	myAt[ i ] = offsetPosition;
500	}
501	});
502
503	position = {
504	my: myAt.join( " " ),
505	at: myAt.join( " " ),
506	offset: offset.join( " " )
507	};
508	}
509
510	position = $.extend( {}, $.ui.dialog.prototype.options.position, position );
511	} else {
512	position = $.ui.dialog.prototype.options.position;
513	}
514
515	// need to show the dialog to get the actual offset in the position plugin
516	isVisible = this.uiDialog.is( ":visible" );
517	if ( !isVisible ) {
518	this.uiDialog.show();
519	}
520	this.uiDialog.position( position );
521	if ( !isVisible ) {
522	this.uiDialog.hide();
523	}
524	},
525
526	_setOptions: function( options ) {
527	var that = this,
528	resizableOptions = {},
529	resize = false;
530
531	$.each( options, function( key, value ) {
532	that._setOption( key, value );
533
534	if ( key in sizeRelatedOptions ) {
535	resize = true;
536	}
537	if ( key in resizableRelatedOptions ) {
538	resizableOptions[ key ] = value;
539	}
540	});
541
542	if ( resize ) {
543	this._size();
544	}
545	if ( this.uiDialog.is( ":data(resizable)" ) ) {
546	this.uiDialog.resizable( "option", resizableOptions );
547	}
548	},
549
550	_setOption: function( key, value ) {
551	var isDraggable, isResizable,
552	uiDialog = this.uiDialog;
553
554	switch ( key ) {
555	case "buttons":
556	this._createButtons( value );
557	break;
558	case "closeText":
559	// ensure that we always pass a string
560	this.uiDialogTitlebarCloseText.text( "" + value );
561	break;
562	case "dialogClass":
563	uiDialog
564	.removeClass( this.options.dialogClass )
565	.addClass( uiDialogClasses + value );
566	break;
567	case "disabled":
568	if ( value ) {
569	uiDialog.addClass( "ui-dialog-disabled" );
570	} else {
571	uiDialog.removeClass( "ui-dialog-disabled" );
572	}
573	break;
574	case "draggable":
575	isDraggable = uiDialog.is( ":data(draggable)" );
576	if ( isDraggable && !value ) {
577	uiDialog.draggable( "destroy" );
578	}
579
580	if ( !isDraggable && value ) {
581	this._makeDraggable();
582	}
583	break;
584	case "position":
585	this._position( value );
586	break;
587	case "resizable":
588	// currently resizable, becoming non-resizable
589	isResizable = uiDialog.is( ":data(resizable)" );
590	if ( isResizable && !value ) {
591	uiDialog.resizable( "destroy" );
592	}
593
594	// currently resizable, changing handles
595	if ( isResizable && typeof value === "string" ) {
596	uiDialog.resizable( "option", "handles", value );
597	}
598
599	// currently non-resizable, becoming resizable
600	if ( !isResizable && value !== false ) {
601	this._makeResizable( value );
602	}
603	break;
604	case "title":
605	// convert whatever was passed in o a string, for html() to not throw up
606	$( ".ui-dialog-title", this.uiDialogTitlebar )
607	.html( "" + ( value \|\| " " ) );
608	break;
609	}
610
611	this._super( key, value );
612	},
613
614	_size: function() {
615	/* If the user has resized the dialog, the .ui-dialog and .ui-dialog-content
616	* divs will both have width and height set, so we need to reset them
617	*/
618	var nonContentHeight, minContentHeight, autoHeight,
619	options = this.options,
620	isVisible = this.uiDialog.is( ":visible" );
621
622	// reset content sizing
623	this.element.show().css({
624	width: "auto",
625	minHeight: 0,
626	height: 0
627	});
628
629	if ( options.minWidth > options.width ) {
630	options.width = options.minWidth;
631	}
632
633	// reset wrapper sizing
634	// determine the height of all the non-content elements
635	nonContentHeight = this.uiDialog.css({
636	height: "auto",
637	width: options.width
638	})
639	.outerHeight();
640	minContentHeight = Math.max( 0, options.minHeight - nonContentHeight );
641
642	if ( options.height === "auto" ) {
643	// only needed for IE6 support
644	if ( $.support.minHeight ) {
645	this.element.css({
646	minHeight: minContentHeight,
647	height: "auto"
648	});
649	} else {
650	this.uiDialog.show();
651	autoHeight = this.element.css( "height", "auto" ).height();
652	if ( !isVisible ) {
653	this.uiDialog.hide();
654	}
655	this.element.height( Math.max( autoHeight, minContentHeight ) );
656	}
657	} else {
658	this.element.height( Math.max( options.height - nonContentHeight, 0 ) );
659	}
660
661	if (this.uiDialog.is( ":data(resizable)" ) ) {
662	this.uiDialog.resizable( "option", "minHeight", this._minHeight() );
663	}
664	}
665	});
666
667	$.extend($.ui.dialog, {
668	uuid: 0,
669	maxZ: 0,
670
671	getTitleId: function($el) {
672	var id = $el.attr( "id" );
673	if ( !id ) {
674	this.uuid += 1;
675	id = this.uuid;
676	}
677	return "ui-dialog-title-" + id;
678	},
679
680	overlay: function( dialog ) {
681	this.$el = $.ui.dialog.overlay.create( dialog );
682	}
683	});
684
685	$.extend( $.ui.dialog.overlay, {
686	instances: [],
687	// reuse old instances due to IE memory leak with alpha transparency (see #5185)
688	oldInstances: [],
689	maxZ: 0,
690	events: $.map(
691	"focus,mousedown,mouseup,keydown,keypress,click".split( "," ),
692	function( event ) {
693	return event + ".dialog-overlay";
694	}
695	).join( " " ),
696	create: function( dialog ) {
697	if ( this.instances.length === 0 ) {
698	// prevent use of anchors and inputs
699	// we use a setTimeout in case the overlay is created from an
700	// event that we're going to be cancelling (see #2804)
701	setTimeout(function() {
702	// handle $(el).dialog().dialog('close') (see #4065)
703	if ( $.ui.dialog.overlay.instances.length ) {
704	$( document ).bind( $.ui.dialog.overlay.events, function( event ) {
705	// stop events if the z-index of the target is < the z-index of the overlay
706	// we cannot return true when we don't want to cancel the event (#3523)
707	if ( $( event.target ).zIndex() < $.ui.dialog.overlay.maxZ ) {
708	return false;
709	}
710	});
711	}
712	}, 1 );
713
714	// handle window resize
715	$( window ).bind( "resize.dialog-overlay", $.ui.dialog.overlay.resize );
716	}
717
718	var $el = ( this.oldInstances.pop() \|\| $( "<div>" ).addClass( "ui-widget-overlay" ) );
719
720	// allow closing by pressing the escape key
721	$( document ).bind( "keydown.dialog-overlay", function( event ) {
722	var instances = $.ui.dialog.overlay.instances;
723	// only react to the event if we're the top overlay
724	if ( instances.length !== 0 && instances[ instances.length - 1 ] === $el &&
725	dialog.options.closeOnEscape && !event.isDefaultPrevented() && event.keyCode &&
726	event.keyCode === $.ui.keyCode.ESCAPE ) {
727
728	dialog.close( event );
729	event.preventDefault();
730	}
731	});
732
733	$el.appendTo( document.body ).css({
734	width: this.width(),
735	height: this.height()
736	});
737
738	if ( $.fn.bgiframe ) {
739	$el.bgiframe();
740	}
741
742	this.instances.push( $el );
743	return $el;
744	},
745
746	destroy: function( $el ) {
747	var indexOf = $.inArray( $el, this.instances ),
748	maxZ = 0;
749
750	if ( indexOf !== -1 ) {
751	this.oldInstances.push( this.instances.splice( indexOf, 1 )[ 0 ] );
752	}
753
754	if ( this.instances.length === 0 ) {
755	$( [ document, window ] ).unbind( ".dialog-overlay" );
756	}
757
758	$el.height( 0 ).width( 0 ).remove();
759
760	// adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
761	$.each( this.instances, function() {
762	maxZ = Math.max( maxZ, this.css( "z-index" ) );
763	});
764	this.maxZ = maxZ;
765	},
766
767	height: function() {
768	var scrollHeight,
769	offsetHeight;
770	// handle IE
771	if ( $.browser.msie ) {
772	scrollHeight = Math.max(
773	document.documentElement.scrollHeight,
774	document.body.scrollHeight
775	);
776	offsetHeight = Math.max(
777	document.documentElement.offsetHeight,
778	document.body.offsetHeight
779	);
780
781	if ( scrollHeight < offsetHeight ) {
782	return $( window ).height() + "px";
783	} else {
784	return scrollHeight + "px";
785	}
786	// handle "good" browsers
787	} else {
788	return $( document ).height() + "px";
789	}
790	},
791
792	width: function() {
793	var scrollWidth,
794	offsetWidth;
795	// handle IE
796	if ( $.browser.msie ) {
797	scrollWidth = Math.max(
798	document.documentElement.scrollWidth,
799	document.body.scrollWidth
800	);
801	offsetWidth = Math.max(
802	document.documentElement.offsetWidth,
803	document.body.offsetWidth
804	);
805
806	if ( scrollWidth < offsetWidth ) {
807	return $( window ).width() + "px";
808	} else {
809	return scrollWidth + "px";
810	}
811	// handle "good" browsers
812	} else {
813	return $( document ).width() + "px";
814	}
815	},
816
817	resize: function() {
818	/* If the dialog is draggable and the user drags it past the
819	* right edge of the window, the document becomes wider so we
820	* need to stretch the overlay. If the user then drags the
821	* dialog back to the left, the document will become narrower,
822	* so we need to shrink the overlay to the appropriate size.
823	* This is handled by shrinking the overlay before setting it
824	* to the full document size.
825	*/
826	var $overlays = $( [] );
827	$.each( $.ui.dialog.overlay.instances, function() {
828	$overlays = $overlays.add( this );
829	});
830
831	$overlays.css({
832	width: 0,
833	height: 0
834	}).css({
835	width: $.ui.dialog.overlay.width(),
836	height: $.ui.dialog.overlay.height()
837	});
838	}
839	});
840
841	$.extend( $.ui.dialog.overlay.prototype, {
842	destroy: function() {
843	$.ui.dialog.overlay.destroy( this.$el );
844	}
845	});
846
847	}( jQuery ) );

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