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Fix #12904: Firefox defaultDisplay with body/iframe display:none. Report and solution by @maranomynet; test by @rwldrn.

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This commit is contained in:
Richard Gibson
2012-12-08 18:04:13 -05:00
parent 23d7cf0488
commit d343e6b9ed
2 changed files with 57 additions and 49 deletions
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58
src/css.js
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@@ -1,4 +1,4 @@
var curCSS, iframe, iframeDoc,
var curCSS, iframe,
ralpha = /alpha\([^)]*\)/i,
ropacity = /opacity\s*=\s*([^)]*)/,
rposition = /^(top|right|bottom|left)$/,
@@ -446,44 +446,38 @@ function getWidthOrHeight( elem, name, extra ) {
// Try to determine the default display value of an element
function css_defaultDisplay( nodeName ) {
if ( elemdisplay[ nodeName ] ) {
return elemdisplay[ nodeName ];
}
var elem,
doc = document,
display = elemdisplay[ nodeName ];
var elem = jQuery( "<" + nodeName + ">" ).appendTo( document.body ),
display = elem.css("display");
elem.remove();
if ( !display ) {
elem = jQuery( doc.createElement( nodeName ) );
display = curCSS( elem.appendTo( doc.body )[0], "display" );
elem.remove();
// If the simple way fails,
// get element's real default display by attaching it to a temp iframe
if ( display === "none" || display === "" ) {
// Use the already-created iframe if possible
iframe = document.body.appendChild(
iframe || jQuery.extend( document.createElement("iframe"), {
frameBorder: 0,
width: 0,
height: 0
})
);
// 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 );
// Create a cacheable copy of the iframe document on first call.
// IE and Opera will allow us to reuse the iframeDoc without re-writing the fake HTML
// document to it; WebKit & Firefox won't allow reusing the iframe document.
if ( !iframeDoc || !iframe.createElement ) {
iframeDoc = ( iframe.contentWindow || iframe.contentDocument ).document;
iframeDoc.write("<!doctype html><html><body>");
iframeDoc.close();
// 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.close();
elem = jQuery( doc.createElement( nodeName ) );
display = curCSS( elem.appendTo( doc.body )[0], "display" );
elem.remove();
iframe.detach();
}
elem = iframeDoc.body.appendChild( iframeDoc.createElement(nodeName) );
display = curCSS( elem, "display" );
document.body.removeChild( iframe );
// Store the correct default display
elemdisplay[ nodeName ] = display;
}
// Store the correct default display
elemdisplay[ nodeName ] = display;
return display;
}