69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
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// Copyright (c) 2011 The Chromium Embedded Framework Authors.
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// Portions copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _WEB_DROP_TARGET_WIN_H
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#define _WEB_DROP_TARGET_WIN_H
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#pragma once
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#include "base/scoped_ptr.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
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#include "ui/base/dragdrop/drop_target.h"
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namespace WebKit {
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class WebView;
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};
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class WebViewHost;
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// A helper object that provides drop capabilities to a WebView. The
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// DropTarget handles drags that enter the region of the WebView by
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// passing on the events to the renderer.
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class WebDropTarget : public ui::DropTarget {
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public:
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// Create a new WebDropTarget associating it with the given HWND and
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// WebView.
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WebDropTarget(HWND source_hwnd, WebKit::WebView* view);
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virtual ~WebDropTarget();
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void set_drag_cursor(WebKit::WebDragOperation op) {
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drag_cursor_ = op;
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}
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protected:
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virtual DWORD OnDragEnter(IDataObject* data_object,
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DWORD key_state,
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POINT cursor_position,
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DWORD effect);
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virtual DWORD OnDragOver(IDataObject* data_object,
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DWORD key_state,
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POINT cursor_position,
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DWORD effect);
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virtual void OnDragLeave(IDataObject* data_object);
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virtual DWORD OnDrop(IDataObject* data_object,
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DWORD key_state,
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POINT cursor_position,
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DWORD effect);
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private:
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// Our associated WebView.
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WebKit::WebView* view_;
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// We keep track of the web view host we're dragging over. If it changes
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// during a drag, we need to re-send the DragEnter message. WARNING:
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// this pointer should never be dereferenced. We only use it for comparing
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// pointers.
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WebViewHost* current_wvh_;
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// Used to determine what cursor we should display when dragging over web
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// content area. This can be updated async during a drag operation.
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WebKit::WebDragOperation drag_cursor_;
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DISALLOW_COPY_AND_ASSIGN(WebDropTarget);
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};
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#endif // _WEB_DROP_TARGET_WIN_H
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