X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fsupport.js;h=878db1f0ba401d1986b8dbbc0c705fafb66c50ac;hb=0cdcef5b364fa3c89d7f27935e77b453f4a56efd;hp=5821301a9c41dfce77c21d7cd5edf3f6f5ab75b3;hpb=a6f3757d50f8be021505f4f7fa7201199e8b7f2d;p=jquery.git

diff --git a/src/support.js b/src/support.js
index 5821301..878db1f 100644
--- a/src/support.js
+++ b/src/support.js
@@ -1,3 +1,5 @@
+(function( jQuery ) {
+
 (function() {
 
 	jQuery.support = {};
@@ -5,13 +7,15 @@
 	var root = document.documentElement,
 		script = document.createElement("script"),
 		div = document.createElement("div"),
-		id = "script" + now();
+		id = "script" + jQuery.now();
 
 	div.style.display = "none";
 	div.innerHTML = "   <link/><table></table><a href='/a' style='color:red;float:left;opacity:.55;'>a</a><input type='checkbox'/>";
 
 	var all = div.getElementsByTagName("*"),
-		a = div.getElementsByTagName("a")[0];
+		a = div.getElementsByTagName("a")[0],
+		select = document.createElement("select"),
+		opt = select.appendChild( document.createElement("option") );
 
 	// Can't get basic test support
 	if ( !all || !all.length || !a ) {
@@ -54,18 +58,23 @@
 
 		// Make sure that a selected-by-default option has a working selected property.
 		// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
-		optSelected: document.createElement("select").appendChild( document.createElement("option") ).selected,
-
-		parentNode: div.removeChild( div.appendChild( document.createElement("div") ) ).parentNode === null,
+		optSelected: opt.selected,
 
 		// Will be defined later
-		deleteExpando: true,
+		optDisabled: false,
 		checkClone: false,
 		scriptEval: false,
 		noCloneEvent: true,
-		boxModel: null
+		boxModel: null,
+		inlineBlockNeedsLayout: false,
+		reliableHiddenOffsets: true
 	};
 
+	// Make sure that the options inside disabled selects aren't marked as disabled
+	// (WebKit marks them as diabled)
+	select.disabled = true;
+	jQuery.support.optDisabled = !opt.disabled;
+
 	script.type = "text/javascript";
 	try {
 		script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
@@ -81,15 +90,6 @@
 		delete window[ id ];
 	}
 
-	// Test to see if it's possible to delete an expando from an element
-	// Fails in Internet Explorer
-	try {
-		delete script.test;
-	
-	} catch(e) {
-		jQuery.support.deleteExpando = false;
-	}
-
 	root.removeChild( script );
 
 	if ( div.attachEvent && div.fireEvent ) {
@@ -119,8 +119,30 @@
 
 		document.body.appendChild( div );
 		jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
-		document.body.removeChild( div ).style.display = 'none';
 
+		// Check if natively block-level elements act like inline-block
+		// elements when setting their display to 'inline'
+		// (IE < 8 does this)
+		if ( 'zoom' in div.style ) {
+			div.style.display = 'inline';
+
+			// Layout is necessary to trigger this “feature”
+			div.style.zoom = 1;
+			jQuery.support.inlineBlockNeedsLayout = div.offsetWidth === 2;
+		}
+
+		// Check if table cells still have offsetWidth/Height when they are set
+		// to display:none and there are still other visible table cells in a
+		// table row; if so, offsetWidth/Height are not reliable for use when
+		// determining if an element has been hidden directly using
+		// display:none (it is still safe to use offsets if a parent element is
+		// hidden; don safety goggles and see bug #4512 for more information).
+		// (only IE 8 fails this test)
+		div.innerHTML = '<table><tr><td style="display:none"></td><td>t</td></tr></table>';
+		jQuery.support.reliableHiddenOffsets = div.getElementsByTagName('td')[0].offsetHeight === 0;
+		div.innerHTML = '';
+
+		document.body.removeChild( div ).style.display = 'none';
 		div = null;
 	});
 
@@ -159,3 +181,5 @@ jQuery.props = {
 	usemap: "useMap",
 	frameborder: "frameBorder"
 };
+
+})( jQuery );