Prepare for color input datalist support on Android

Source/core/html/forms/ColorInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 35 matching lines @@
 #include "core/rendering/RenderView.h"
 #include "platform/UserGestureIndicator.h"
 #include "platform/graphics/Color.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
+// Upper limit of number of datalist suggestions shown.
+static const unsigned maxSuggestions = 1000;
+// Upper limit for the length of the labels for datalist suggestions.
+static const unsigned maxSuggestionLabelLength = 1000;
+
 static bool isValidColorString(const String& value)
 {
     if (value.isEmpty())
         return false;
     if (value[0] != '#')
         return false;
 
     // We don't accept #rgb and #aarrggbb formats.
     if (value.length() != 7)
         return false;
@@ skipping 152 matching lines @@
 }
 
 bool ColorInputType::shouldShowSuggestions() const
 {
     if (RuntimeEnabledFeatures::dataListElementEnabled())
         return element().fastHasAttribute(listAttr);
 
     return false;
 }
 
-Vector<Color> ColorInputType::suggestions() const
+Vector<ColorSuggestion> ColorInputType::suggestions() const
 {
-    Vector<Color> suggestions;
+    Vector<ColorSuggestion> suggestions;
     if (RuntimeEnabledFeatures::dataListElementEnabled()) {
         HTMLDataListElement* dataList = element().dataList();
         if (dataList) {
             RefPtr<HTMLCollection> options = dataList->options();
             for (unsigned i = 0; HTMLOptionElement* option = toHTMLOptionElement(options->item(i)); i++) {
                 if (!element().isValidValue(option->value()))
                     continue;
                 Color color(option->value());
                 if (!color.isValid())
                     continue;
-                suggestions.append(color);
+                ColorSuggestion suggestion(color, option->label().left(maxSuggestionLabelLength));
+                suggestions.append(suggestion);
+                if (suggestions.size() >= maxSuggestions)
+                    break;
             }
         }
     }
     return suggestions;
 }
 
 } // namespace WebCore