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Fix #12723 and simplification and optmization of defaultDisplay helper

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This commit is contained in:
Oleg
2013-09-17 15:47:31 +04:00
parent 642e9a4557
commit a25343001e
2 changed files with 34 additions and 19 deletions
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29
src/css/defaultDisplay.js
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@@ -4,17 +4,28 @@ define([
], function( jQuery ) {
var iframe,
elemdisplay = { BODY: "block" };
elemdisplay = {};
/**
* Retrieve the actual display of a element
* @param {String} name nodeName of the element
* @param {Object} doc Document object
*/
// Called only from within defaultDisplay
function actualDisplay( name, doc ) {
var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),
display = jQuery.css( elem[0], "display" );
elem.remove();
// getDefaultComputedStyle might be reliably used only on attached element
display = window.getDefaultComputedStyle ?
// Use of this method is a temporary fix (more like optmization) until something better comes along,
// since it was removed from specification and supported only in FF
window.getDefaultComputedStyle( elem[ 0 ] ).display : jQuery.css( elem[ 0 ], "display" );
// We don't have any data stored on the element,
// so use "detach" method as fast way to get rid of the element
elem.detach();
return display;
}
@@ -31,15 +42,15 @@ function defaultDisplay( nodeName ) {
// If the simple way fails, read from inside an iframe
if ( display === "none" || !display ) {
// Use the already-created iframe if possible
iframe = ( iframe ||
jQuery("<iframe frameborder='0' width='0' height='0'/>")
.css( "cssText", "display:block !important" )
).appendTo( doc.documentElement );
iframe = (iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" )).appendTo( doc.documentElement );
// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
doc = ( iframe[0].contentWindow || iframe[0].contentDocument ).document;
doc.write("<!doctype html><html><body>");
doc = iframe[ 0 ].contentDocument;
// Support: IE
doc.write();
doc.close();
display = actualDisplay( nodeName, doc );