Fixed drag and drop into and out of Browser Plugin.

content/browser/browser_plugin/browser_plugin_guest.h

 // Copyright (c) 2012 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.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. It has a
 // helper, BrowserPluginGuestHelper, which is a RenderViewHostObserver. The
 // helper object intercepts messages (ViewHostMsg_*) directed at the browser
 // process and redirects them to this class. Any messages about the guest render
 // process that the embedder might be interested in receiving should be listened
 // for here.
 //
 // BrowserPluginGuest is a WebContentsDelegate and WebContentsObserver for the
 // guest WebContents. BrowserPluginGuest operates under the assumption that the
 // guest will be accessible through only one RenderViewHost for the lifetime of
 // the guest WebContents. Thus, cross-process navigation is not supported.
 
 #ifndef CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_
 #define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_
 
 #include <map>
 
 #include "base/compiler_specific.h"
 #include "base/id_map.h"
+#include "base/memory/weak_ptr.h"
 #include "base/shared_memory.h"
 #include "base/time.h"
 #include "content/port/common/input_event_ack_state.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragStatus.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
@@ skipping 12 matching lines @@
 struct WebDropData;
 
 namespace WebKit {
 class WebInputEvent;
 }
 
 namespace content {
 
 class BrowserPluginHostFactory;
 class BrowserPluginEmbedder;
+class DragEventSourceInfo;
 class RenderProcessHost;
 
 // A browser plugin guest provides functionality for WebContents to operate in
 // the guest role and implements guest specific overrides for ViewHostMsg_*
 // messages.
 //
 // BrowserPluginEmbedder is responsible for creating and destroying a guest.
-class CONTENT_EXPORT BrowserPluginGuest : public NotificationObserver,
-                                          public WebContentsDelegate,
-                                          public WebContentsObserver {
+class CONTENT_EXPORT BrowserPluginGuest
+    : public NotificationObserver,
+      public WebContentsDelegate,
+      public WebContentsObserver,
+      public base::SupportsWeakPtr<BrowserPluginGuest> {
  public:
   virtual ~BrowserPluginGuest();
 
   static BrowserPluginGuest* Create(
       int instance_id,
       WebContentsImpl* web_contents,
       const BrowserPluginHostMsg_CreateGuest_Params& params);
 
   // Overrides factory for testing. Default (NULL) value indicates regular
   // (non-test) environment.
@@ skipping 173 matching lines @@
       const BrowserPluginHostMsg_AutoSize_Params& auto_size_params,
       const BrowserPluginHostMsg_ResizeGuest_Params& resize_guest_params);
 
 
   // Message handlers for messages from guest.
 
   void OnCreateWindow(const ViewHostMsg_CreateWindow_Params& params,
                       int* route_id,
                       int* surface_id,
                       int64* cloned_session_storage_namespace_id);
+  void OnDragStopped();
   void OnHandleInputEventAck(
       WebKit::WebInputEvent::Type event_type,
       InputEventAckState ack_result);
   void OnHasTouchEventHandlers(bool accept);
   void OnSetCursor(const WebCursor& cursor);
   // On MacOSX popups are painted by the browser process. We handle them here
   // so that they are positioned correctly.
 #if defined(OS_MACOSX)
   void OnShowPopup(const ViewHostMsg_ShowPopup_Params& params);
 #endif
   void OnShowWidget(int route_id, const gfx::Rect& initial_pos);
+  void OnStartDragging(bool* handled);
   // Overriden in tests.
   virtual void OnTakeFocus(bool reverse);
-  void OnUpdateDragCursor(WebKit::WebDragOperation operation);
   void OnUpdateFrameName(int frame_id,
                          bool is_top_level,
                          const std::string& name);
   void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
 
   // Static factory instance (always NULL for non-test).
   static content::BrowserPluginHostFactory* factory_;
 
   NotificationRegistrar notification_registrar_;
   WebContentsImpl* embedder_web_contents_;
@@ skipping 15 matching lines @@
   bool auto_size_enabled_;
   gfx::Size max_auto_size_;
   gfx::Size min_auto_size_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_