Update $.fn.animate to change display mode only when necessary (inline, non-floated...

[jquery.git] / src / support.js

diff --git a/src/support.js b/src/support.js
index f9429f9..878db1f 100644 (file)
--- 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 ) {
@@ -54,22 +58,27 @@
 
                // 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;" ) );
-       } catch( scriptError ) {}
+       } catch(e) {}
 
        root.insertBefore( script, root.firstChild );
 
@@ -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( expandoError ) {
-               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 );