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

webkit/glue/webview_impl.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_IMPL_H_
 #define WEBKIT_GLUE_WEBVIEW_IMPL_H_
 
 #include <set>
 
 #include "Page.h"
@@ skipping 84 matching lines @@
   virtual const std::wstring& GetInspectorSettings() const;
   virtual void SetInspectorSettings(const std::wstring& settings);
   virtual void SetPageEncoding(const std::wstring& encoding_name);
   virtual std::wstring GetMainFrameEncodingName();
   virtual void ZoomIn(bool text_only);
   virtual void ZoomOut(bool text_only);
   virtual void ResetZoom();
   virtual void CopyImageAt(int x, int y);
   virtual void InspectElement(int x, int y);
   virtual void ShowJavaScriptConsole();
-  virtual void DragSourceCancelledAt(
-      const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point);
   virtual void DragSourceEndedAt(
       const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point);
+      const WebKit::WebPoint& screen_point,
+      WebKit::WebDragOperation operation);
   virtual void DragSourceMovedTo(
       const WebKit::WebPoint& client_point,
       const WebKit::WebPoint& screen_point);
   virtual void DragSourceSystemDragEnded();
-  virtual bool DragTargetDragEnter(
+  virtual WebKit::WebDragOperation DragTargetDragEnter(
       const WebKit::WebDragData& drag_data, int identity,
       const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point);
-  virtual bool DragTargetDragOver(
+      const WebKit::WebPoint& screen_point,
+      WebKit::WebDragOperationsMask operations_allowed);
+  virtual WebKit::WebDragOperation DragTargetDragOver(
       const WebKit::WebPoint& client_point,
-      const WebKit::WebPoint& screen_point);
+      const WebKit::WebPoint& screen_point,
+      WebKit::WebDragOperationsMask operations_allowed);
   virtual void DragTargetDragLeave();
   virtual void DragTargetDrop(
       const WebKit::WebPoint& client_point,
       const WebKit::WebPoint& screen_point);
   virtual int32 GetDragIdentity();
   virtual bool SetDropEffect(bool accept);
   virtual void AutofillSuggestionsForNode(
       int64 node_id,
       const std::vector<std::wstring>& suggestions,
       int default_suggestion_index);
@@ skipping 83 matching lines @@
 
   // Set the disposition for how this webview is to be initially shown.
   void set_initial_navigation_policy(WebKit::WebNavigationPolicy policy) {
     initial_navigation_policy_ = policy;
   }
   WebKit::WebNavigationPolicy initial_navigation_policy() const {
     return initial_navigation_policy_;
   }
 
   // Start a system drag and drop operation.
-  void StartDragging(const WebKit::WebDragData& drag_data);
+  void StartDragging(WebKit::WebPoint event_pos,
+      const WebKit::WebDragData& drag_data,
+      WebKit::WebDragOperationsMask drag_source_operation_mask);
 
   // Hides the autocomplete popup if it is showing.
   void HideAutoCompletePopup();
 
   // Converts |x|, |y| from window coordinates to contents coordinates and gets
   // the underlying Node for them.
   WebCore::Node* GetNodeForWindowPos(int x, int y);
 
 #if ENABLE(NOTIFICATIONS)
   // Returns the provider of desktop notifications.
@@ skipping 110 matching lines @@
   int32 drag_identity_;
 
   // Valid when drag_target_dispatch_ is true.  Used to override the default
   // browser drop effect with the effects "none" or "copy".
   enum DragTargetDropEffect {
     DROP_EFFECT_DEFAULT = -1,
     DROP_EFFECT_NONE,
     DROP_EFFECT_COPY
   } drop_effect_;
 
-  // When true, the drag data can be dropped onto the current drop target in
-  // this WebView (the drop target can accept the drop).
-  bool drop_accept_;
+  // The available drag operations (copy, move link...) allowed by the source.
+  WebKit::WebDragOperation operations_allowed_;
+
+  // The current drag operation as negotiated by the source and destination.
+  // When not equal to DragOperationNone, the drag data can be dropped onto the
+  // current drop target in this WebView (the drop target can accept the drop).
+  WebKit::WebDragOperation drag_operation_;
 
   // The autocomplete popup.  Kept around and reused every-time new suggestions
   // should be shown.
   RefPtr<WebCore::PopupContainer> autocomplete_popup_;
 
   // Whether the autocomplete popup is currently showing.
   bool autocomplete_popup_showing_;
 
   // The autocomplete client.
   scoped_ptr<AutocompletePopupMenuClient> autocomplete_popup_client_;
@@ skipping 18 matching lines @@
   static const WebKit::WebInputEvent* current_input_event() {
     return g_current_input_event;
   }
 private:
   static const WebKit::WebInputEvent* g_current_input_event;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewImpl);
 };
 
 #endif  // WEBKIT_GLUE_WEBVIEW_IMPL_H_