Add supportsInputMethod() interface for WebPlugin.

public/web/WebPlugin.h

 /*
  * Copyright (C) 2009, 2012 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 18 matching lines @@
  */
 
 #ifndef WebPlugin_h
 #define WebPlugin_h
 
 #include "../platform/WebCanvas.h"
 #include "../platform/WebString.h"
 #include "../platform/WebURL.h"
 #include "WebDragOperation.h"
 #include "WebDragStatus.h"
+#include "WebWidget.h"
 
 struct NPObject;
 struct _NPP;
 
 namespace blink {
 
 class WebDataSource;
 class WebDragData;
 class WebFrame;
 class WebInputEvent;
 class WebPluginContainer;
 class WebURLResponse;
+struct WebCompositionUnderline;
 struct WebCursorInfo;
 struct WebPluginParams;
 struct WebPrintParams;
 struct WebPoint;
 struct WebRect;
+struct WebTextInputInfo;
 struct WebURLError;
 template <typename T> class WebVector;
 
 class WebPlugin {
 public:
     virtual bool initialize(WebPluginContainer*) = 0;
     virtual void destroy() = 0;
 
     virtual WebPluginContainer* container() const { return 0; }
 
     virtual NPObject* scriptableObject() = 0;
     virtual struct _NPP* pluginNPP() { return 0; }
 
     // Returns true if the form submission value is successfully obtained
     // from the plugin. The value would be associated with the name attribute
     // of the corresponding object element.
     virtual bool getFormValue(WebString&) { return false; }
     virtual bool supportsKeyboardFocus() const { return false; }
     virtual bool supportsEditCommands() const { return false; }
+    // Returns true if this plugin supports input method, which implements
+    // setComposition() and confirmComposition() below.
+    virtual bool supportsInputMethod() const { return false; }
 
     virtual bool canProcessDrag() const { return false; }
 
     virtual void paint(WebCanvas*, const WebRect&) = 0;
 
     // Coordinates are relative to the containing window.
     virtual void updateGeometry(
         const WebRect& frameRect, const WebRect& clipRect,
         const WebVector<WebRect>& cutOutsRects, bool isVisible) = 0;
 
@@ skipping 33 matching lines @@
     // Ends the print operation.
     virtual void printEnd() { }
 
     virtual bool hasSelection() const { return false; }
     virtual WebString selectionAsText() const { return WebString(); }
     virtual WebString selectionAsMarkup() const { return WebString(); }
 
     virtual bool executeEditCommand(const WebString& name) { return false; }
     virtual bool executeEditCommand(const WebString& name, const WebString& value) { return false; }
 
+    // Sets composition text from input method, and returns true if the
+    // composition is set successfully.
+    virtual bool setComposition(const WebString& text, const WebVector<WebCompositionUnderline>& underlines, int selectionStart, int selectionEnd) { return false; }
+    // Confirms an ongoing composition and returns true if there is an ongoing
+    // composition or the text is inserted.
+    virtual bool confirmComposition(const WebString& text, WebWidget::ConfirmCompositionBehavior selectionBehavior) { return false; }
     // If the given position is over a link, returns the absolute url.
     // Otherwise an empty url is returned.
     virtual WebURL linkAtPosition(const WebPoint& position) const { return WebURL(); }
 
     // Used for zooming of full page plugins.
     virtual void setZoomLevel(double level, bool textOnly) { }
 
     // Find interface.
     // Start a new search.  The plugin should search for a little bit at a time so that it
     // doesn't block the thread in case of a large document.  The results, along with the
@@ skipping 17 matching lines @@
 
     virtual bool isPlaceholder() { return true; }
 
 protected:
     ~WebPlugin() { }
 };
 
 } // namespace blink
 
 #endif