chrome/browser/ui/views/download/download_shelf_view.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_
   6 #define CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "chrome/browser/download/download_shelf.h"
  13 #include "ui/gfx/animation/animation_delegate.h"
  14 #include "ui/views/accessible_pane_view.h"
  15 #include "ui/views/controls/button/button.h"
  16 #include "ui/views/controls/link_listener.h"
  17 #include "ui/views/mouse_watcher.h"
  18
  19 class Browser;
  20 class BrowserView;
  21 class DownloadItemView;
  22
  23 namespace content {
  24 class DownloadItem;
  25 class PageNavigator;
  26 }
  27
  28 namespace gfx {
  29 class SlideAnimation;
  30 }
  31
  32 namespace views {
  33 class ImageButton;
  34 class ImageView;
  35 }
  36
  37 // DownloadShelfView is a view that contains individual views for each download,
  38 // as well as a close button and a link to show all downloads.
  39 //
  40 // DownloadShelfView does not hold an infinite number of download views, rather
  41 // it'll automatically remove views once a certain point is reached.
  42 class DownloadShelfView : public views::AccessiblePaneView,
  43                           public gfx::AnimationDelegate,
  44                           public DownloadShelf,
  45                           public views::ButtonListener,
  46                           public views::LinkListener,
  47                           public views::MouseWatcherListener {
  48  public:
  49   DownloadShelfView(Browser* browser, BrowserView* parent);
  50   virtual ~DownloadShelfView();
  51
  52   // Sent from the DownloadItemView when the user opens an item.
  53   void OpenedDownload(DownloadItemView* view);
  54
  55   // Returns the relevant containing object that can load pages.
  56   // i.e. the |browser_|.
  57   content::PageNavigator* GetNavigator();
  58
  59   // Returns the parent_.
  60   BrowserView* get_parent() { return parent_; }
  61
  62   // Implementation of View.
  63   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  64   virtual void Layout() OVERRIDE;
  65   virtual void ViewHierarchyChanged(
  66       const ViewHierarchyChangedDetails& details) OVERRIDE;
  67
  68   // Implementation of gfx::AnimationDelegate.
  69   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
  70   virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
  71
  72   // Implementation of views::LinkListener.
  73   // Invoked when the user clicks the 'show all downloads' link button.
  74   virtual void LinkClicked(views::Link* source, int event_flags) OVERRIDE;
  75
  76   // Implementation of ButtonListener.
  77   // Invoked when the user clicks the close button. Asks the browser to
  78   // hide the download shelf.
  79   virtual void ButtonPressed(views::Button* button,
  80                              const ui::Event& event) OVERRIDE;
  81
  82   // Implementation of DownloadShelf.
  83   virtual bool IsShowing() const OVERRIDE;
  84   virtual bool IsClosing() const OVERRIDE;
  85   virtual Browser* browser() const OVERRIDE;
  86
  87   // Implementation of MouseWatcherListener OVERRIDE.
  88   virtual void MouseMovedOutOfHost() OVERRIDE;
  89
  90   // Removes a specified download view. The supplied view is deleted after
  91   // it's removed.
  92   void RemoveDownloadView(views::View* view);
  93
  94  protected:
  95   // Implementation of DownloadShelf.
  96   virtual void DoAddDownload(content::DownloadItem* download) OVERRIDE;
  97   virtual void DoShow() OVERRIDE;
  98   virtual void DoClose(CloseReason reason) OVERRIDE;
  99
 100   // From AccessiblePaneView
 101   virtual views::View* GetDefaultFocusableChild() OVERRIDE;
 102
 103  private:
 104   // Adds a View representing a download to this DownloadShelfView.
 105   // DownloadShelfView takes ownership of the View, and will delete it as
 106   // necessary.
 107   void AddDownloadView(DownloadItemView* view);
 108
 109   // Paints the border.
 110   virtual void OnPaintBorder(gfx::Canvas* canvas) OVERRIDE;
 111
 112   // Returns true if the shelf is wide enough to show the first download item.
 113   bool CanFitFirstDownloadItem();
 114
 115   // Called on theme change.
 116   void UpdateColorsFromTheme();
 117
 118   // Overridden from views::View.
 119   virtual void OnThemeChanged() OVERRIDE;
 120
 121   // Called when the "close shelf" animation ended.
 122   void Closed();
 123
 124   // Returns true if we can auto close. We can auto-close if all the items on
 125   // the shelf have been opened.
 126   bool CanAutoClose();
 127
 128   // The browser for this shelf.
 129   Browser* browser_;
 130
 131   // The animation for adding new items to the shelf.
 132   scoped_ptr<gfx::SlideAnimation> new_item_animation_;
 133
 134   // The show/hide animation for the shelf itself.
 135   scoped_ptr<gfx::SlideAnimation> shelf_animation_;
 136
 137   // The download views. These are also child Views, and deleted when
 138   // the DownloadShelfView is deleted.
 139   std::vector<DownloadItemView*> download_views_;
 140
 141   // An image displayed on the right of the "Show all downloads..." link.
 142   views::ImageView* arrow_image_;
 143
 144   // Link for showing all downloads. This is contained as a child, and deleted
 145   // by View.
 146   views::Link* show_all_view_;
 147
 148   // Button for closing the downloads. This is contained as a child, and
 149   // deleted by View.
 150   views::ImageButton* close_button_;
 151
 152   // The window this shelf belongs to.
 153   BrowserView* parent_;
 154
 155   views::MouseWatcher mouse_watcher_;
 156
 157   DISALLOW_COPY_AND_ASSIGN(DownloadShelfView);
 158 };
 159
 160 #endif  // CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_