59 lines
1.8 KiB
C
59 lines
1.8 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_DRAG_SOURCE_WIN_H
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#define _WEB_DRAG_SOURCE_WIN_H
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#pragma once
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#include "base/basictypes.h"
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#include "ui/base/dragdrop/drag_source.h"
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#include "ui/gfx/native_widget_types.h"
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#include "ui/gfx/point.h"
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namespace WebKit {
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class WebView;
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};
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// An IDropSource implementation for a WebView. Handles notifications sent
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// by an active drag-drop operation as the user mouses over other drop targets
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// on their system. This object tells Windows whether or not the drag should
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// continue, and supplies the appropriate cursors.
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class WebDragSource : public ui::DragSource {
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public:
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// Create a new DragSource for a given HWND and WebView.
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WebDragSource(gfx::NativeWindow source_wnd, WebKit::WebView* view);
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virtual ~WebDragSource();
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void set_effect(DWORD effect) { effect_ = effect; }
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protected:
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// ui::DragSource
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virtual void OnDragSourceCancel();
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virtual void OnDragSourceDrop();
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virtual void OnDragSourceMove();
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private:
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// Cannot construct thusly.
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WebDragSource();
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// OnDragSourceDrop schedules its main work to be done after IDropTarget::Drop
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// by posting a task to this function.
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void DelayedOnDragSourceDrop();
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// Keep a reference to the window so we can translate the cursor position.
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gfx::NativeWindow source_wnd_;
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// We use this as a channel to the web view to tell it about various drag
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// drop events that it needs to know about (such as when a drag operation it
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// initiated terminates).
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WebKit::WebView* view_;
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DWORD effect_;
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DISALLOW_COPY_AND_ASSIGN(WebDragSource);
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};
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#endif // _WEB_DRAG_SOURCE_WIN_H
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