Implement Pepper IME API.

webkit/plugins/ppapi/ppapi_plugin_instance.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 #define WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
 #include "ppapi/c/dev/pp_cursor_type_dev.h"
 #include "ppapi/c/dev/ppp_printing_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
+#include "ppapi/c/ppb_input_event.h"
 #include "ppapi/c/ppp_graphics_3d.h"
 #include "ppapi/c/ppp_instance.h"
 #include "ppapi/shared_impl/function_group_base.h"
 #include "ppapi/shared_impl/instance_impl.h"
 #include "ppapi/shared_impl/ppp_instance_combined.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCanvas.h"
+#include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/rect.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
 struct PP_Var;
 struct PPP_Find_Dev;
 struct PPP_InputEvent;
 struct PPP_Instance_Private;
 struct PPP_Messaging;
 struct PPP_MouseLock_Dev;
 struct PPP_Pdf;
 struct PPP_PolicyUpdate_Dev;
 struct PPP_Selection_Dev;
 struct PPP_Zoom_Dev;
 
 class SkBitmap;
 class TransportDIB;
 
-namespace gfx {
-class Rect;
-}
-
 namespace WebKit {
-struct WebCursorInfo;
 class WebInputEvent;
 class WebPluginContainer;
+struct WebCompositionUnderline;
+struct WebCursorInfo;
 }
 
 namespace ppapi {
 struct PPP_Instance_Combined;
 class Resource;
 }
 
 namespace webkit {
 namespace ppapi {
 
@@ skipping 91 matching lines @@
                   const std::vector<std::string>& arg_values,
                   const GURL& plugin_url,
                   bool full_frame);
   bool HandleDocumentLoad(PPB_URLLoader_Impl* loader);
   bool HandleInputEvent(const WebKit::WebInputEvent& event,
                         WebKit::WebCursorInfo* cursor_info);
   void HandlePolicyUpdate(const std::string& policy_json);
   PP_Var GetInstanceObject();
   void ViewChanged(const gfx::Rect& position, const gfx::Rect& clip);
 
+  // Handlers for composition events.
+  bool HandleCompositionStart(const string16& text);
+  bool HandleCompositionUpdate(
+      const string16& text,
+      const std::vector<WebKit::WebCompositionUnderline>& underlines,
+      int selection_start,
+      int selection_end);
+  bool HandleCompositionEnd(const string16& text);
+  bool HandleTextInput(const string16& text);
+
+  // Implementation of composition API.
+  void UpdateCaretPosition(const gfx::Rect& caret,
+                           const gfx::Rect& bounding_box);
+  void SetTextInputType(ui::TextInputType type);
+
+  // Gets the current text input status.
+  ui::TextInputType text_input_type() const { return text_input_type_; }
+  gfx::Rect GetCaretBounds() const;
+  bool IsPluginAcceptingCompositionEvents() const;
+
   // Notifications about focus changes, see has_webkit_focus_ below.
   void SetWebKitFocus(bool has_focus);
   void SetContentAreaFocus(bool has_focus);
 
   // Notifications that the view has rendered the page and that it has been
   // flushed to the screen. These messages are used to send Flush callbacks to
   // the plugin for DeviceContext2D.
   void ViewInitiatedPaint();
   void ViewFlushedPaint();
 
@@ skipping 225 matching lines @@
   // A value of zero indicates the plugin is not backed by a texture.
   void setBackingTextureId(unsigned int id);
 
   // Internal helper function for PrintPage().
   bool PrintPageHelper(PP_PrintPageNumberRange_Dev* page_ranges,
                        int num_ranges,
                        WebKit::WebCanvas* canvas);
 
   void DoSetCursor(WebKit::WebCursorInfo* cursor);
 
+  // Internal helper functions for HandleCompositionXXX().
+  bool SendCompositionEventToPlugin(
+      PP_InputEvent_Type type,
+      const string16& text);
+  bool SendCompositionEventWithUnderlineInformationToPlugin(
+      PP_InputEvent_Type type,
+      const string16& text,
+      const std::vector<WebKit::WebCompositionUnderline>& underlines,
+      int selection_start,
+      int selection_end);
+
   // Checks if the security origin of the document containing this instance can
   // assess the security origin of the main frame document.
   bool CanAccessMainFrame() const;
 
   // Returns true if the WebView the plugin is in renders via the accelerated
   // compositing path.
   bool IsViewAccelerated();
 
   PluginDelegate* delegate_;
   scoped_refptr<PluginModule> module_;
@@ skipping 123 matching lines @@
   SkBitmap* sad_plugin_;
 
   typedef std::set<PluginObject*> PluginObjectSet;
   PluginObjectSet live_plugin_objects_;
 
   // Classes of events that the plugin has registered for, both for filtering
   // and not. The bits are PP_INPUTEVENT_CLASS_*.
   uint32_t input_event_mask_;
   uint32_t filtered_input_event_mask_;
 
+  // Text composition status.
+  ui::TextInputType text_input_type_;
+  gfx::Rect text_input_caret_;
+  gfx::Rect text_input_caret_bounds_;
+  bool text_input_caret_set_;
+
   PP_CompletionCallback lock_mouse_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_