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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_
#include <gtk/gtk.h>
#include "base/basictypes.h"
#include "base/gfx/native_widget_types.h"
#include "base/message_loop.h"
#include "webkit/api/public/WebDragOperation.h"
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,
GdkEventButton* last_mouse_down);
// MessageLoop::Observer implementation:
virtual void WillProcessEvent(GdkEvent* event);
virtual void DidProcessEvent(GdkEvent* event);
private:
static gboolean OnDragFailedThunk(GtkWidget* widget,
GdkDragContext* drag_context,
GtkDragResult result,
TabContentsDragSource* handler) {
return handler->OnDragFailed();
}
gboolean OnDragFailed();
static void OnDragEndThunk(GtkWidget* widget,
GdkDragContext* drag_context,
TabContentsDragSource* handler) {
handler->OnDragEnd(WebKit::WebDragOperationCopy);
// TODO(snej): Pass actual operation instead of hardcoding copy
}
void OnDragEnd(WebKit::WebDragOperation operation);
static void OnDragDataGetThunk(GtkWidget* drag_widget,
GdkDragContext* context,
GtkSelectionData* selection_data,
guint target_type,
guint time,
TabContentsDragSource* handler) {
handler->OnDragDataGet(context, selection_data, target_type, time);
}
void OnDragDataGet(GdkDragContext* context, GtkSelectionData* selection_data,
guint target_type, guint time);
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 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_;
DISALLOW_COPY_AND_ASSIGN(TabContentsDragSource);
};
#endif // CHROME_BROWSER_GTK_TAB_CONTENTS_DRAG_SOURCE_H_
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