gtk: Split CustomDrag into multiple pieces.

chrome/browser/ui/gtk/custom_drag.h

 // 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_UI_GTK_CUSTOM_DRAG_H_
 #define CHROME_BROWSER_UI_GTK_CUSTOM_DRAG_H_
 
 #include <gtk/gtk.h>
-#include <vector>
 
 #include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/base/gtk/gtk_signal.h"
 
-class BookmarkNode;
-class Profile;
-
-namespace content {
-class DownloadItem;
-}
-
 namespace gfx {
 class Image;
 }
 
 // Base class for programatically generated drags.
 class CustomDrag {
  protected:
   CustomDrag(gfx::Image* icon, int code_mask, GdkDragAction action);
   virtual ~CustomDrag();
 
-  virtual void OnDragDataGet(GtkWidget* widget, GdkDragContext* context,
+  virtual void OnDragDataGet(GtkWidget* widget,
+                             GdkDragContext* context,
                              GtkSelectionData* selection_data,
-                             guint target_type, guint time) = 0;
+                             guint target_type,
+                             guint time) = 0;
 
  private:
   CHROMEGTK_CALLBACK_1(CustomDrag, void, OnDragBegin, GdkDragContext*);
   CHROMEGTK_CALLBACK_1(CustomDrag, void, OnDragEnd, GdkDragContext*);
 
   // Since this uses a virtual function, we can't use a macro.
   static void OnDragDataGetThunk(GtkWidget* widget, GdkDragContext* context,
                                  GtkSelectionData* selection_data,
                                  guint target_type, guint time,
                                  CustomDrag* custom_drag) {
     return custom_drag->OnDragDataGet(widget, context, selection_data,
                                       target_type, time);
   }
 
   // Can't use a OwnedWidgetGtk because the initialization of GtkInvisible
   // sinks the reference.
   GtkWidget* drag_widget_;
 
   // The image for the drag. The lifetime of the image should be managed outside
   // this object. Most icons are owned by the IconManager.
   gfx::Image* image_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomDrag);
 };
 
-// Encapsulates functionality for drags of download items.
-class DownloadItemDrag : public CustomDrag {
- public:
-  // Sets |widget| as a source for drags pertaining to |item|. No
-  // DownloadItemDrag object is created.
-  // It is safe to call this multiple times with different values of |icon|.
-  static void SetSource(GtkWidget* widget,
-                        const content::DownloadItem* item,
-                        gfx::Image* icon);
-
-  // Creates a new DownloadItemDrag, the lifetime of which is tied to the
-  // system drag.
-  static void BeginDrag(const content::DownloadItem* item, gfx::Image* icon);
-
- private:
-  class DragData;
-
-  DownloadItemDrag(const content::DownloadItem* item, gfx::Image* icon);
-  virtual ~DownloadItemDrag();
-
-  virtual void OnDragDataGet(GtkWidget* widget, GdkDragContext* context,
-                             GtkSelectionData* selection_data,
-                             guint target_type, guint time) OVERRIDE;
-
-  scoped_ptr<DragData> drag_data_;
-
-  DISALLOW_COPY_AND_ASSIGN(DownloadItemDrag);
-};
-
-// Encapsulates functionality for drags of one or more bookmarks.
-class BookmarkDrag : public CustomDrag {
- public:
-  // Creates a new BookmarkDrag, the lifetime of which is tied to the
-  // system drag.
-  static void BeginDrag(Profile* profile,
-                        const std::vector<const BookmarkNode*>& nodes);
-
- private:
-  BookmarkDrag(Profile* profile,
-               const std::vector<const BookmarkNode*>& nodes);
-  virtual ~BookmarkDrag();
-
-  virtual void OnDragDataGet(GtkWidget* widget, GdkDragContext* context,
-                             GtkSelectionData* selection_data,
-                             guint target_type, guint time) OVERRIDE;
-
-  Profile* profile_;
-  std::vector<const BookmarkNode*> nodes_;
-
-  DISALLOW_COPY_AND_ASSIGN(BookmarkDrag);
-};
-
 #endif  // CHROME_BROWSER_UI_GTK_CUSTOM_DRAG_H_