| // Copyright (c) 2011 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_TAB_CONTENTS_WEB_DROP_TARGET_WIN_H_ |
| #define CHROME_BROWSER_TAB_CONTENTS_WEB_DROP_TARGET_WIN_H_ |
| #pragma once |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h" |
| #include "ui/base/dragdrop/drop_target.h" |
| |
| class InterstitialDropTarget; |
| class RenderViewHost; |
| class TabContents; |
| class TabContentsWrapper; |
| // A helper object that provides drop capabilities to a TabContents. The |
| // DropTarget handles drags that enter the region of the TabContents by |
| // passing on the events to the renderer. |
| class WebDropTarget : public ui::DropTarget { |
| public: |
| // Create a new WebDropTarget associating it with the given HWND and |
| // TabContents. |
| WebDropTarget(HWND source_hwnd, TabContents* contents); |
| virtual ~WebDropTarget(); |
| |
| void set_drag_cursor(WebKit::WebDragOperation op) { |
| drag_cursor_ = op; |
| } |
| |
| protected: |
| virtual DWORD OnDragEnter(IDataObject* data_object, |
| DWORD key_state, |
| POINT cursor_position, |
| DWORD effect); |
| |
| virtual DWORD OnDragOver(IDataObject* data_object, |
| DWORD key_state, |
| POINT cursor_position, |
| DWORD effect); |
| |
| virtual void OnDragLeave(IDataObject* data_object); |
| |
| virtual DWORD OnDrop(IDataObject* data_object, |
| DWORD key_state, |
| POINT cursor_position, |
| DWORD effect); |
| |
| private: |
| // Our associated TabContents. |
| TabContents* tab_contents_; |
| // The TabContentsWrapper for the TabContents member defined above. |
| // Weak reference. |
| TabContentsWrapper* tab_; |
| |
| // We keep track of the render view host we're dragging over. If it changes |
| // during a drag, we need to re-send the DragEnter message. WARNING: |
| // this pointer should never be dereferenced. We only use it for comparing |
| // pointers. |
| RenderViewHost* current_rvh_; |
| |
| // Used to determine what cursor we should display when dragging over web |
| // content area. This can be updated async during a drag operation. |
| WebKit::WebDragOperation drag_cursor_; |
| |
| // A special drop target handler for when we try to d&d while an interstitial |
| // page is showing. |
| scoped_ptr<InterstitialDropTarget> interstitial_drop_target_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebDropTarget); |
| }; |
| |
| #endif // CHROME_BROWSER_TAB_CONTENTS_WEB_DROP_TARGET_WIN_H_ |