Drag-and-drop: DragEnter, DragOver, DragLeave, DragDrop

content/public/browser/render_widget_host.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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 241 matching lines @@
 
   // Add/remove an input event observer.
   virtual void AddInputEventObserver(InputEventObserver* observer) = 0;
   virtual void RemoveInputEventObserver(InputEventObserver* observer) = 0;
 
   // Get the screen info corresponding to this render widget.
   virtual void GetScreenInfo(ScreenInfo* result) = 0;
 
   // Sends a compositor proto to the render widget.
   virtual void HandleCompositorProto(const std::vector<uint8_t>& proto) = 0;
+
+  // Drag-and-drop drop target messages that get sent to Blink.
+  virtual void DragTargetDragEnter(
+      const DropData& drop_data,
+      const gfx::Point& client_pt,
+      const gfx::Point& screen_pt,
+      blink::WebDragOperationsMask operations_allowed,
+      int key_modifiers) {}
+  virtual void DragTargetDragEnterWithMetaData(
+      const std::vector<DropData::Metadata>& metadata,
+      const gfx::Point& client_pt,
+      const gfx::Point& screen_pt,
+      blink::WebDragOperationsMask operations_allowed,
+      int key_modifiers) {};
+  virtual void DragTargetDragOver(
+      const gfx::Point& client_pt,
+      const gfx::Point& screen_pt,
+      blink::WebDragOperationsMask operations_allowed,
+      int key_modifiers) {}
+  virtual void DragTargetDragLeave() {}
+  virtual void DragTargetDrop(const DropData& drop_data,
+                              const gfx::Point& client_pt,
+                              const gfx::Point& screen_pt,
+                              int key_modifiers) {}
+
+  // Filters drop data before it is passed to RenderWidgetHost.
+  virtual void FilterDropData(DropData* drop_data) {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_H_