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// Copyright (c) 2009 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_GTK_TAB_CONTENTS_DRAG_SOURCE_H_
#define CHROME_BROWSER_GTK_TAB_CONTENTS_DRAG_SOURCE_H_
#pragma once
#include <gtk/gtk.h>
#include "app/gtk_signal.h"
#include "app/gtk_signal_registrar.h"
#include "base/basictypes.h"
#include "base/file_path.h"
#include "base/message_loop.h"
#include "base/string16.h"
#include "gfx/point.h"
#include "gfx/native_widget_types.h"
#include "googleurl/src/gurl.h"
#include "third_party/WebKit/WebKit/chromium/public/WebDragOperation.h"
class SkBitmap;
class TabContents;
class TabContentsView;
struct WebDropData;
// TabContentsDragSource takes care of managing the drag from a TabContents
// with Gtk.
class TabContentsDragSource : public MessageLoopForUI::Observer {
public:
explicit TabContentsDragSource(TabContentsView* tab_contents_view);
~TabContentsDragSource();
TabContents* tab_contents() const;
// Starts a drag for the tab contents this TabContentsDragSource was
// created for.
void StartDragging(const WebDropData& drop_data,
WebKit::WebDragOperationsMask allowed_ops,
GdkEventButton* last_mouse_down,
const SkBitmap& image,
const gfx::Point& image_offset);
// MessageLoop::Observer implementation:
virtual void WillProcessEvent(GdkEvent* event);
virtual void DidProcessEvent(GdkEvent* event);
private:
CHROMEGTK_CALLBACK_2(TabContentsDragSource, gboolean, OnDragFailed,
GdkDragContext*, GtkDragResult);
CHROMEGTK_CALLBACK_1(TabContentsDragSource, void, OnDragBegin,
GdkDragContext*);
CHROMEGTK_CALLBACK_1(TabContentsDragSource, void, OnDragEnd,
GdkDragContext*);
CHROMEGTK_CALLBACK_4(TabContentsDragSource, void, OnDragDataGet,
GdkDragContext*, GtkSelectionData*, guint, guint);
CHROMEGTK_CALLBACK_1(TabContentsDragSource, gboolean, OnDragIconExpose,
GdkEventExpose*);
gfx::NativeView GetContentNativeView() const;
// The view we're manging the drag for.
TabContentsView* tab_contents_view_;
// The drop data for the current drag (for drags that originate in the render
// view). Non-NULL iff there is a current drag.
scoped_ptr<WebDropData> drop_data_;
// The image used for depicting the drag, and the offset between the cursor
// and the top left pixel.
GdkPixbuf* drag_pixbuf_;
gfx::Point image_offset_;
// The mime type for the file contents of the current drag (if any).
GdkAtom drag_file_mime_type_;
// Whether the current drag has failed. Meaningless if we are not the source
// for a current drag.
bool drag_failed_;
// This is the widget we use to initiate drags. Since we don't use the
// renderer widget, we can persist drags even when our contents is switched
// out.
GtkWidget* drag_widget_;
// The file mime type for a drag-out download.
string16 wide_download_mime_type_;
// The file name to be saved to for a drag-out download.
FilePath download_file_name_;
// The URL to download from for a drag-out download.
GURL download_url_;
// The widget that provides visual feedback for the drag.
GtkWidget* drag_icon_;
GtkSignalRegistrar signals_;
DISALLOW_COPY_AND_ASSIGN(TabContentsDragSource);
};
#endif // CHROME_BROWSER_GTK_TAB_CONTENTS_DRAG_SOURCE_H_
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