Initial download shelf on OS X....

chrome/browser/cocoa/download_shelf_mac.h

 // 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_DOWNLOAD_SHELF_GTK_H_
-#define CHROME_BROWSER_GTK_DOWNLOAD_SHELF_GTK_H_
+#ifndef CHROME_BROWSER_COCOA_DOWNLOAD_SHELF_MAC_H_
+#define CHROME_BROWSER_COCOA_DOWNLOAD_SHELF_MAC_H_
 
-#include <gtk/gtk.h>
+#import <Cocoa/Cocoa.h>
 
 #include <vector>
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/download/download_shelf.h"
 
 class BaseDownloadItemModel;
 class CustomDrawButton;
-class DownloadItemGtk;
+class DownloadItemMac;
 
-class DownloadShelfGtk : public DownloadShelf {
+@class ShelfView;
+@class DownloadShelfController;
+
+// A class to bridge the chromium download shelf to mac gui. This is just a
+// wrapper class that forward everything to DownloadShelfController.
+
+class DownloadShelfMac : public DownloadShelf {
  public:
-  explicit DownloadShelfGtk(TabContents* tab_contents);
-
-  ~DownloadShelfGtk();
+  explicit DownloadShelfMac(Browser* browser,
+      DownloadShelfController* controller);
 
   // DownloadShelf implementation.
   virtual void AddDownload(BaseDownloadItemModel* download_model);
   virtual bool IsShowing() const;
+  virtual bool IsClosing() const;
+  virtual void Show();
+  virtual void Close();
 
  private:
-  // Show the shelf.
-  void Show();
+  // The download items we have added to our shelf.
+  std::vector<DownloadItemMac*> download_items_;
 
-  // Hide the shelf.
-  void Hide();
-
-  static void OnButtonClick(GtkWidget* button, DownloadShelfGtk* toolbar);
-
-  // |hbox_| holds the download items and buttons of the shelf.
-  GtkWidget* hbox_;
-
-  // |shelf_| is the highest level widget of the shelf. See the constructor
-  // for an explanation of the widget layout.
-  GtkWidget* shelf_;
-
-  // This hbox holds the link text and download icon. It also holds the
-  // distinction of being the leftmost non-download item widget on the shelf.
-  GtkWidget* link_hbox_;
-
-  // The 'x' that the user can press to hide the download shelf.
-  scoped_ptr<CustomDrawButton> close_button_;
-
-  // Keeps track of our current hide/show state.
-  bool is_showing_;
-
-  // The download items we have added to our shelf.
-  std::vector<DownloadItemGtk*> download_items_;
+  DownloadShelfController* shelf_controller_;  // weak, owns us
 };
 
-#endif  // CHROME_BROWSER_GTK_DOWNLOAD_SHELF_GTK_H_
+#endif  // CHROME_BROWSER_COCOA_DOWNLOAD_SHELF_MAC_H_