Plumb the DragOperation through all the layers between the platform DnD code ...

webkit/glue/webview.h

 // Copyright (c) 2009 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_GLUE_WEBVIEW_H_
 #define WEBKIT_GLUE_WEBVIEW_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "webkit/api/public/WebDragOperation.h"
 #include "webkit/api/public/WebWidget.h"
 
 namespace WebKit {
 class WebDragData;
 class WebFrame;
 class WebSettings;
 struct WebPoint;
 }
 
 class GURL;
@@ skipping 158 matching lines @@
   // WebView (if there is such an image)
   virtual void CopyImageAt(int x, int y) = 0;
 
   // Inspect a particular point in the WebView. (x = -1 || y = -1) is a special
   // case which means inspect the current page and not a specific point.
   virtual void InspectElement(int x, int y) = 0;
 
   // Show the JavaScript console.
   virtual void ShowJavaScriptConsole() = 0;
 
-  // Notifies the webview that a drag has been cancelled.
-  virtual void DragSourceCancelledAt(
-      const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point) = 0;
-
-  // Notifies the webview that a drag has terminated.
+  // Notifies the webview that a drag has ended (with a drop or a cancel).
   virtual void DragSourceEndedAt(
       const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point) = 0;
+      const WebKit::WebPoint& screen_point,
+      WebKit::WebDragOperation operation) = 0;
 
   // Notifies the webview that a drag and drop operation is in progress, with
   // dropable items over the view.
   virtual void DragSourceMovedTo(
       const WebKit::WebPoint& client_point,
       const WebKit::WebPoint& screen_point) = 0;
 
   // Notfies the webview that the system drag and drop operation has ended.
   virtual void DragSourceSystemDragEnded() = 0;
 
   // Callback methods when a drag and drop operation is trying to drop data
   // on this webview.
-  virtual bool DragTargetDragEnter(
+  virtual WebKit::WebDragOperation DragTargetDragEnter(
       const WebKit::WebDragData& drag_data, int identity,
       const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point) = 0;
-  virtual bool DragTargetDragOver(
+      const WebKit::WebPoint& screen_point,
+      WebKit::WebDragOperationsMask operations_allowed) = 0;
+  virtual WebKit::WebDragOperation DragTargetDragOver(
       const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point) = 0;
+      const WebKit::WebPoint& screen_point,
+      WebKit::WebDragOperationsMask operations_allowed) = 0;
   virtual void DragTargetDragLeave() = 0;
   virtual void DragTargetDrop(
       const WebKit::WebPoint& client_point,
       const WebKit::WebPoint& screen_point) = 0;
 
   // Helper method for drag and drop target operations: return the drag data
   // identity.
   virtual int32 GetDragIdentity() = 0;
 
   // Helper method for drag and drop target operations: override the default
@@ skipping 32 matching lines @@
 
 #if defined(OS_LINUX)
   virtual void SetThemeFocusRingColor(int r, int g, int b) = 0;
 #endif
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
 
 #endif  // WEBKIT_GLUE_WEBVIEW_H_