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// Copyright (c) 2006-2008 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 CHROME_BROWSER_WEB_DRAG_SOURCE_H__
#define CHROME_BROWSER_WEB_DRAG_SOURCE_H__
#include "base/base_drag_source.h"
#include "base/basictypes.h"
class RenderViewHost;
///////////////////////////////////////////////////////////////////////////////
//
// WebDragSource
//
// An IDropSource implementation for a WebContents. Handles notifications sent
// by an active drag-drop operation as the user mouses over other drop targets
// on their system. This object tells Windows whether or not the drag should
// continue, and supplies the appropriate cursors.
//
class WebDragSource : public BaseDragSource {
public:
// Create a new DragSource for a given HWND and RenderViewHost.
WebDragSource(HWND source_hwnd, RenderViewHost* render_view_host);
virtual ~WebDragSource() { }
protected:
// BaseDragSource
virtual void OnDragSourceDrop();
virtual void OnDragSourceMove();
private:
// Cannot construct thusly.
WebDragSource();
// Keep a reference to the HWND so we can translate the cursor position.
HWND source_hwnd_;
// We use this as a channel to the renderer to tell it about various drag
// drop events that it needs to know about (such as when a drag operation it
// initiated terminates).
RenderViewHost* render_view_host_;
DISALLOW_EVIL_CONSTRUCTORS(WebDragSource);
};
#endif // #ifndef CHROME_BROWSER_WEB_DRAG_SOURCE_H__
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