Merge 76941 - 2011-01-28 Alexander Pavlov <apavlov@chromium.org>...

Source/WebCore/inspector/front-end/StylesSidebarPane.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1911 matching lines @@
     tabKeyPressed: function(event)
     {
         this.acceptAutoComplete();
     },
 
     _handleNameOrValueUpDown: function(event)
     {
         var reverse = event.keyIdentifier === "Up";
         if (this.autoCompleteElement)
             this.complete(false, reverse); // Accept the current suggestion, if any.
+        else {
+            // Select the word suffix to affect it when computing the subsequent suggestion.
+            this._selectCurrentWordSuffix();
+        }
+
         this.complete(false, reverse); // Actually increment/decrement the suggestion.
         event.handled = true;
     },
 
+    _selectCurrentWordSuffix: function()
+    {
+        var selection = window.getSelection();
+        if (!selection.rangeCount)
+            return;
+
+        var selectionRange = selection.getRangeAt(0);
+        if (!selectionRange.commonAncestorContainer.isDescendant(this.element))
+            return;
+        var wordSuffixRange = selectionRange.startContainer.rangeOfWord(selectionRange.startOffset, WebInspector.StylesSidebarPane.StyleValueDelimiters, this.element, "forward");
+        if (!wordSuffixRange.toString())
+            return;
+        selection.removeAllRanges();
+        selection.addRange(wordSuffixRange);
+    },
+
     _buildPropertyCompletions: function(wordRange, bestMatchOnly, completionsReadyCallback)
     {
         var prefix = wordRange.toString().toLowerCase();
         if (!prefix.length)
             return;
 
         var results;
         if (bestMatchOnly) {
             results = [];
             var firstMatch = this._cssCompletions.firstStartsWith(prefix);
             if (firstMatch)
                 results.push(firstMatch);
             return completionsReadyCallback(results);
         }
 
         results = this._cssCompletions.startsWith(prefix);
         if (results)
             completionsReadyCallback(results);
     }
 }
 
 WebInspector.StylesSidebarPane.CSSPropertyPrompt.prototype.__proto__ = WebInspector.TextPrompt.prototype;