Makes the download shelf auto-close after the user opens all downloads

chrome/browser/views/download_shelf_view.h

 // Copyright (c) 2010 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_VIEWS_DOWNLOAD_SHELF_VIEW_H_
 #define CHROME_BROWSER_VIEWS_DOWNLOAD_SHELF_VIEW_H_
 #pragma once
 
 #include "app/slide_animation.h"
 #include "chrome/browser/download/download_shelf.h"
 #include "views/controls/button/button.h"
 #include "views/controls/link.h"
+#include "views/mouse_watcher.h"
 
 namespace views {
 class ImageButton;
 class ImageView;
 }
 
 class BaseDownloadItemModel;
 class Browser;
 class BrowserView;
 
 class DownloadAnimation;
 class DownloadItemView;
 
 // DownloadShelfView is a view that contains individual views for each download,
 // as well as a close button and a link to show all downloads.
 //
 // DownloadShelfView does not hold an infinite number of download views, rather
 // it'll automatically remove views once a certain point is reached.
-class DownloadShelfView : public DownloadShelf,
-                          public views::View,
+class DownloadShelfView : public AnimationDelegate,
+                          public DownloadShelf,
                           public views::ButtonListener,
                           public views::LinkController,
-                          public AnimationDelegate {
+                          public views::MouseWatcherListener,
+                          public views::View {
  public:
   DownloadShelfView(Browser* browser, BrowserView* parent);
   virtual ~DownloadShelfView();
 
+  // Sent from the DownloadItemView when the user opens an item.
+  void OpenedDownload(DownloadItemView* view);
+
   // Implementation of View.
   virtual gfx::Size GetPreferredSize();
   virtual void Layout();
   virtual void Paint(gfx::Canvas* canvas);
 
   // Implementation of AnimationDelegate.
   virtual void AnimationProgressed(const Animation* animation);
   virtual void AnimationEnded(const Animation* animation);
 
   // Implementation of LinkController.
   // Invoked when the user clicks the 'show all downloads' link button.
   virtual void LinkActivated(views::Link* source, int event_flags);
 
   // Implementation of ButtonListener.
   // Invoked when the user clicks the close button. Asks the browser to
   // hide the download shelf.
   virtual void ButtonPressed(views::Button* button, const views::Event& event);
 
   // Implementation of DownloadShelf.
   virtual void AddDownload(BaseDownloadItemModel* download_model);
   virtual bool IsShowing() const;
   virtual bool IsClosing() const;
   virtual void Show();
   virtual void Close();
   virtual Browser* browser() const { return browser_; }
 
+  // Implementation of MouseWatcherDelegate.
+  virtual void MouseMovedOutOfView();
+
   // Removes a specified download view. The supplied view is deleted after
   // it's removed.
   void RemoveDownloadView(views::View* view);
 
  private:
   void Init();
 
   // Adds a View representing a download to this DownloadShelfView.
   // DownloadShelfView takes ownership of the View, and will delete it as
   // necessary.
   void AddDownloadView(DownloadItemView* view);
 
   // Paints the border.
   void PaintBorder(gfx::Canvas* canvas);
 
   // Returns true if the shelf is wide enough to show the first download item.
   bool CanFitFirstDownloadItem();
 
   // Called on theme change.
   void UpdateButtonColors();
 
   // Overridden from views::View.
   virtual void OnThemeChanged();
 
   // Called when the "close shelf" animation ended.
   void Closed();
 
+  // Returns true if we can auto close. We can auto-close if all the items on
+  // the shelf have been opened.
+  bool CanAutoClose();
+
   // The browser for this shelf.
   Browser* browser_;
 
   // The animation for adding new items to the shelf.
   scoped_ptr<SlideAnimation> new_item_animation_;
 
   // The show/hide animation for the shelf itself.
   scoped_ptr<SlideAnimation> shelf_animation_;
 
   // The download views. These are also child Views, and deleted when
   // the DownloadShelfView is deleted.
   std::vector<DownloadItemView*> download_views_;
 
   // An image displayed on the right of the "Show all downloads..." link.
   views::ImageView* arrow_image_;
 
   // Link for showing all downloads. This is contained as a child, and deleted
   // by View.
   views::Link* show_all_view_;
 
   // Button for closing the downloads. This is contained as a child, and
   // deleted by View.
   views::ImageButton* close_button_;
 
   // The window this shelf belongs to.
   BrowserView* parent_;
 
+  views::MouseWatcher mouse_watcher_;
+
   DISALLOW_COPY_AND_ASSIGN(DownloadShelfView);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_DOWNLOAD_SHELF_VIEW_H_