Implementing directional selection strategy in Blink.

Source/core/editing/SelectionStrategy.h

Index: Source/core/editing/SelectionStrategy.h
diff --git a/Source/core/css/resolver/AnimatedStyleBuilder.h b/Source/core/editing/SelectionStrategy.h
similarity index 80%
copy from Source/core/css/resolver/AnimatedStyleBuilder.h
copy to Source/core/editing/SelectionStrategy.h
index ff3110e022abd772f0f296022bf317ec0e516b97..d371f7cb84e97bbec4f8b88587c92950bd647df2 100644
--- a/Source/core/css/resolver/AnimatedStyleBuilder.h
+++ b/Source/core/editing/SelectionStrategy.h
@@ -1,5 +1,5 @@
 /*

[yosin_UTC9, 2015/04/21 01:59:52]

nit: Let's use the short version of licence comment.
http://dev.chromium.org/blink/coding-style#TOC-License

[mfomitchev, 2015/04/21 18:44:25]

Done.

- * Copyright (C) 2013 Google Inc. All rights reserved.
+ * Copyright 2015, 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
@@ -28,21 +28,19 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef AnimatedStyleBuilder_h
-#define AnimatedStyleBuilder_h
-
-#include "core/CSSPropertyNames.h"
+#ifndef SelectionStrategy_h
+#define SelectionStrategy_h
 
 namespace blink {
 
-class AnimatableValue;
-class StyleResolverState;
-
-class AnimatedStyleBuilder {
-public:
-    static void applyProperty(CSSPropertyID, StyleResolverState&, const AnimatableValue*);
+enum SelectionStrategy {

[yosin_UTC9, 2015/04/21 01:59:52]

nit: Let's use |enum class| for better type checking.

[mfomitchev, 2015/04/21 18:44:25]

Done.

+    // Always using CharacterGranularity
+    StrategyCharacter,
+    // Switches between WordGranularity and CharacterGranularity
+    // Depending on whether the selection or growing or shrinking
+    StrategyDirection,
 };
 
 } // namespace blink
 
-#endif // AnimatedStyleBuilder_h
+#endif // SelectionStrategy_h