chrome/browser/ui/views/bookmarks/bookmark_bar_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_BOOKMARKS_BOOKMARK_BAR_VIEW_H_
   6 #define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_BAR_VIEW_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/gtest_prod_util.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/prefs/pref_change_registrar.h"
  16 #include "chrome/browser/bookmarks/bookmark_stats.h"
  17 #include "chrome/browser/ui/bookmarks/bookmark_bar.h"
  18 #include "chrome/browser/ui/bookmarks/bookmark_bar_instructions_delegate.h"
  19 #include "chrome/browser/ui/views/bookmarks/bookmark_bubble_view_observer.h"
  20 #include "chrome/browser/ui/views/bookmarks/bookmark_menu_controller_observer.h"
  21 #include "chrome/browser/ui/views/detachable_toolbar_view.h"
  22 #include "components/bookmarks/browser/bookmark_model_observer.h"
  23 #include "components/bookmarks/browser/bookmark_node_data.h"
  24 #include "ui/gfx/animation/animation_delegate.h"
  25 #include "ui/views/context_menu_controller.h"
  26 #include "ui/views/controls/button/button.h"
  27 #include "ui/views/controls/button/menu_button_listener.h"
  28 #include "ui/views/controls/menu/menu_types.h"
  29 #include "ui/views/drag_controller.h"
  30
  31 class BookmarkContextMenu;
  32 class Browser;
  33 class BrowserView;
  34 class Profile;
  35
  36 namespace content {
  37 class PageNavigator;
  38 }
  39
  40 namespace gfx {
  41 class SlideAnimation;
  42 }
  43
  44 namespace views {
  45 class CustomButton;
  46 class MenuButton;
  47 class MenuItemView;
  48 class TextButton;
  49 }
  50
  51 // BookmarkBarView renders the BookmarkModel.  Each starred entry on the
  52 // BookmarkBar is rendered as a MenuButton. An additional MenuButton aligned to
  53 // the right allows the user to quickly see recently starred entries.
  54 //
  55 // BookmarkBarView shows the bookmarks from a specific Profile. BookmarkBarView
  56 // waits until the HistoryService for the profile has been loaded before
  57 // creating the BookmarkModel.
  58 class BookmarkBarView : public DetachableToolbarView,
  59                         public BookmarkModelObserver,
  60                         public views::MenuButtonListener,
  61                         public views::ButtonListener,
  62                         public views::ContextMenuController,
  63                         public views::DragController,
  64                         public gfx::AnimationDelegate,
  65                         public BookmarkMenuControllerObserver,
  66                         public BookmarkBarInstructionsDelegate,
  67                         public BookmarkBubbleViewObserver {
  68  public:
  69   // The internal view class name.
  70   static const char kViewClassName[];
  71
  72   // Constant used in Browser View, as well as here.
  73   // How inset the bookmarks bar is when displayed on the new tab page.
  74   static const int kNewtabHorizontalPadding;
  75
  76   // Maximum size of buttons on the bookmark bar.
  77   static const int kMaxButtonWidth;
  78
  79   // Number of pixels the attached bookmark bar overlaps with the toolbar.
  80   static const int kToolbarAttachedBookmarkBarOverlap;
  81
  82   // |browser_view| can be NULL during tests.
  83   BookmarkBarView(Browser* browser, BrowserView* browser_view);
  84   virtual ~BookmarkBarView();
  85
  86   static void DisableAnimationsForTesting(bool disabled);
  87
  88   // Returns the current browser.
  89   Browser* browser() const { return browser_; }
  90
  91   // Sets the PageNavigator that is used when the user selects an entry on
  92   // the bookmark bar.
  93   void SetPageNavigator(content::PageNavigator* navigator);
  94
  95   // Sets whether the containing browser is showing an infobar.  This affects
  96   // layout during animation.
  97   void set_infobar_visible(bool infobar_visible) {
  98     infobar_visible_ = infobar_visible;
  99   }
 100
 101   // Changes the state of the bookmark bar.
 102   void SetBookmarkBarState(BookmarkBar::State state,
 103                            BookmarkBar::AnimateChangeType animate_type);
 104
 105   // Returns the toolbar overlap when fully detached.
 106   int GetFullyDetachedToolbarOverlap() const;
 107
 108   // Whether or not we are animating.
 109   bool is_animating();
 110
 111   // If |loc| is over a bookmark button the node is returned corresponding to
 112   // the button and |model_start_index| is set to 0. If a overflow button is
 113   // showing and |loc| is over the overflow button, the bookmark bar node is
 114   // returned and |model_start_index| is set to the index of the first node
 115   // contained in the overflow menu.
 116   const BookmarkNode* GetNodeForButtonAtModelIndex(const gfx::Point& loc,
 117                                                    int* model_start_index);
 118
 119   // Returns the MenuButton for node.
 120   views::MenuButton* GetMenuButtonForNode(const BookmarkNode* node);
 121
 122   // Returns the position to anchor the menu for |button| at.
 123   void GetAnchorPositionForButton(views::MenuButton* button,
 124                                   views::MenuAnchorPosition* anchor);
 125
 126   // Returns the button responsible for showing bookmarks in the other bookmark
 127   // folder.
 128   views::MenuButton* other_bookmarked_button() const {
 129     return other_bookmarked_button_;
 130   }
 131
 132   // Returns the button used when not all the items on the bookmark bar fit.
 133   views::MenuButton* overflow_button() const { return overflow_button_; }
 134
 135   // Returns the active MenuItemView, or NULL if a menu isn't showing.
 136   views::MenuItemView* GetMenu();
 137
 138   // Returns the context menu, or null if one isn't showing.
 139   views::MenuItemView* GetContextMenu();
 140
 141   // Returns the drop MenuItemView, or NULL if a menu isn't showing.
 142   views::MenuItemView* GetDropMenu();
 143
 144   // If a button is currently throbbing, it is stopped. If immediate is true
 145   // the throb stops immediately, otherwise it stops after a couple more
 146   // throbs.
 147   void StopThrobbing(bool immediate);
 148
 149   // Returns the tooltip text for the specified url and title. The returned
 150   // text is clipped to fit within the bounds of the monitor. |context| is
 151   // used to determine which gfx::Screen is used to retrieve bounds.
 152   //
 153   // Note that we adjust the direction of both the URL and the title based on
 154   // the locale so that pure LTR strings are displayed properly in RTL locales.
 155   static base::string16 CreateToolTipForURLAndTitle(const views::Widget* widget,
 156                                               const gfx::Point& screen_loc,
 157                                               const GURL& url,
 158                                               const base::string16& title,
 159                                               Profile* profile);
 160
 161   // DetachableToolbarView methods:
 162   virtual bool IsDetached() const OVERRIDE;
 163   virtual double GetAnimationValue() const OVERRIDE;
 164   virtual int GetToolbarOverlap() const OVERRIDE;
 165
 166   // View methods:
 167   virtual gfx::Size GetPreferredSize() const OVERRIDE;
 168   virtual gfx::Size GetMinimumSize() const OVERRIDE;
 169   virtual bool HitTestRect(const gfx::Rect& rect) const OVERRIDE;
 170   virtual void Layout() OVERRIDE;
 171   virtual void ViewHierarchyChanged(
 172       const ViewHierarchyChangedDetails& details) OVERRIDE;
 173   virtual void PaintChildren(gfx::Canvas* canvas,
 174                              const views::CullSet& cull_set) OVERRIDE;
 175   virtual bool GetDropFormats(
 176       int* formats,
 177       std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
 178   virtual bool AreDropTypesRequired() OVERRIDE;
 179   virtual bool CanDrop(const ui::OSExchangeData& data) OVERRIDE;
 180   virtual void OnDragEntered(const ui::DropTargetEvent& event) OVERRIDE;
 181   virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
 182   virtual void OnDragExited() OVERRIDE;
 183   virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
 184   virtual void OnThemeChanged() OVERRIDE;
 185   virtual const char* GetClassName() const OVERRIDE;
 186
 187   // AccessiblePaneView:
 188   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
 189
 190   // gfx::AnimationDelegate:
 191   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
 192   virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
 193
 194   // BookmarkMenuControllerObserver:
 195   virtual void BookmarkMenuControllerDeleted(
 196       BookmarkMenuController* controller) OVERRIDE;
 197
 198   // BookmarkBarInstructionsDelegate:
 199   virtual void ShowImportDialog() OVERRIDE;
 200
 201   // BookmarkBubbleViewObserver:
 202   virtual void OnBookmarkBubbleShown(const GURL& url) OVERRIDE;
 203   virtual void OnBookmarkBubbleHidden() OVERRIDE;
 204
 205   // BookmarkModelObserver:
 206   virtual void BookmarkModelLoaded(BookmarkModel* model,
 207                                    bool ids_reassigned) OVERRIDE;
 208   virtual void BookmarkModelBeingDeleted(BookmarkModel* model) OVERRIDE;
 209   virtual void BookmarkNodeMoved(BookmarkModel* model,
 210                                  const BookmarkNode* old_parent,
 211                                  int old_index,
 212                                  const BookmarkNode* new_parent,
 213                                  int new_index) OVERRIDE;
 214   virtual void BookmarkNodeAdded(BookmarkModel* model,
 215                                  const BookmarkNode* parent,
 216                                  int index) OVERRIDE;
 217   virtual void BookmarkNodeRemoved(BookmarkModel* model,
 218                                    const BookmarkNode* parent,
 219                                    int old_index,
 220                                    const BookmarkNode* node,
 221                                    const std::set<GURL>& removed_urls) OVERRIDE;
 222   virtual void BookmarkAllNodesRemoved(
 223       BookmarkModel* model,
 224       const std::set<GURL>& removed_urls) OVERRIDE;
 225   virtual void BookmarkNodeChanged(BookmarkModel* model,
 226                                    const BookmarkNode* node) OVERRIDE;
 227   virtual void BookmarkNodeChildrenReordered(BookmarkModel* model,
 228                                              const BookmarkNode* node) OVERRIDE;
 229   virtual void BookmarkNodeFaviconChanged(BookmarkModel* model,
 230                                           const BookmarkNode* node) OVERRIDE;
 231
 232   // views::DragController:
 233   virtual void WriteDragDataForView(views::View* sender,
 234                                     const gfx::Point& press_pt,
 235                                     ui::OSExchangeData* data) OVERRIDE;
 236   virtual int GetDragOperationsForView(views::View* sender,
 237                                        const gfx::Point& p) OVERRIDE;
 238   virtual bool CanStartDragForView(views::View* sender,
 239                                    const gfx::Point& press_pt,
 240                                    const gfx::Point& p) OVERRIDE;
 241
 242   // views::MenuButtonListener:
 243   virtual void OnMenuButtonClicked(views::View* view,
 244                                    const gfx::Point& point) OVERRIDE;
 245
 246   // views::ButtonListener:
 247   virtual void ButtonPressed(views::Button* sender,
 248                              const ui::Event& event) OVERRIDE;
 249
 250   // views::ContextMenuController:
 251   virtual void ShowContextMenuForView(views::View* source,
 252                                       const gfx::Point& point,
 253                                       ui::MenuSourceType source_type) OVERRIDE;
 254
 255  private:
 256   class ButtonSeparatorView;
 257   struct DropInfo;
 258   struct DropLocation;
 259
 260   friend class BookmarkBarViewEventTestBase;
 261   FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewTest, SwitchProfile);
 262   FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewTest,
 263                            NoAppsShortcutWithoutInstantExtended);
 264   FRIEND_TEST_ALL_PREFIXES(BookmarkBarViewInstantExtendedTest,
 265                            AppsShortcutVisibility);
 266
 267   // Used to identify what the user is dropping onto.
 268   enum DropButtonType {
 269     DROP_BOOKMARK,
 270     DROP_OTHER_FOLDER,
 271     DROP_OVERFLOW
 272   };
 273
 274   // Creates recent bookmark button and when visible button as well as
 275   // calculating the preferred height.
 276   void Init();
 277
 278   // NOTE: unless otherwise stated all methods that take an int for an index are
 279   // in terms of the bookmark bar view. Typically the view index and model index
 280   // are the same, but they may differ during animations or drag and drop.
 281   //
 282   // It's easy to get the mapping wrong. For this reason all these methods are
 283   // private.
 284
 285   // Returns the number of buttons corresponding to starred urls/folders. This
 286   // is equivalent to the number of children the bookmark bar node from the
 287   // bookmark bar model has.
 288   int GetBookmarkButtonCount() const;
 289
 290   // Returns the button at the specified index.
 291   views::TextButton* GetBookmarkButton(int index);
 292
 293   // Returns BOOKMARK_LAUNCH_LOCATION_DETACHED_BAR or
 294   // BOOKMARK_LAUNCH_LOCATION_ATTACHED_BAR based on detached state.
 295   BookmarkLaunchLocation GetBookmarkLaunchLocation() const;
 296
 297   // Returns the index of the first hidden bookmark button. If all buttons are
 298   // visible, this returns GetBookmarkButtonCount().
 299   int GetFirstHiddenNodeIndex();
 300
 301   // Creates the button showing the other bookmarked items.
 302   views::MenuButton* CreateOtherBookmarkedButton();
 303
 304   // Creates the button used when not all bookmark buttons fit.
 305   views::MenuButton* CreateOverflowButton();
 306
 307   // Creates the button for rendering the specified bookmark node.
 308   views::View* CreateBookmarkButton(const BookmarkNode* node);
 309
 310   // Creates the button for rendering the apps page shortcut.
 311   views::TextButton* CreateAppsPageShortcutButton();
 312
 313   // Configures the button from the specified node. This sets the text,
 314   // and icon.
 315   void ConfigureButton(const BookmarkNode* node, views::TextButton* button);
 316
 317   // Implementation for BookmarkNodeAddedImpl.
 318   void BookmarkNodeAddedImpl(BookmarkModel* model,
 319                              const BookmarkNode* parent,
 320                              int index);
 321
 322   // Implementation for BookmarkNodeRemoved.
 323   void BookmarkNodeRemovedImpl(BookmarkModel* model,
 324                                const BookmarkNode* parent,
 325                                int index);
 326
 327   // If the node is a child of the root node, the button is updated
 328   // appropriately.
 329   void BookmarkNodeChangedImpl(BookmarkModel* model, const BookmarkNode* node);
 330
 331   // Shows the menu used during drag and drop for the specified node.
 332   void ShowDropFolderForNode(const BookmarkNode* node);
 333
 334   // Cancels the timer used to show a drop menu.
 335   void StopShowFolderDropMenuTimer();
 336
 337   // Stars the timer used to show a drop menu for node.
 338   void StartShowFolderDropMenuTimer(const BookmarkNode* node);
 339
 340   // Calculates the location for the drop in |location|.
 341   void CalculateDropLocation(const ui::DropTargetEvent& event,
 342                              const BookmarkNodeData& data,
 343                              DropLocation* location);
 344
 345   // Writes a BookmarkNodeData for node to data.
 346   void WriteBookmarkDragData(const BookmarkNode* node,
 347                              ui::OSExchangeData* data);
 348
 349   // This determines which view should throb and starts it
 350   // throbbing (e.g when the bookmark bubble is showing).
 351   // If |overflow_only| is true, start throbbing only if |node| is hidden in
 352   // the overflow menu.
 353   void StartThrobbing(const BookmarkNode* node, bool overflow_only);
 354
 355   // Returns the view to throb when a node is removed. |parent| is the parent of
 356   // the node that was removed, and |old_index| the index of the node that was
 357   // removed.
 358   views::CustomButton* DetermineViewToThrobFromRemove(
 359       const BookmarkNode* parent,
 360       int old_index);
 361
 362   // Updates the colors for all the child objects in the bookmarks bar.
 363   void UpdateColors();
 364
 365   // Updates the visibility of |other_bookmarked_button_|. Also shows or hide
 366   // the separator if required.
 367   void UpdateOtherBookmarksVisibility();
 368
 369   // Updates the visibility of |bookmarks_separator_view_|.
 370   void UpdateBookmarksSeparatorVisibility();
 371
 372   // This method computes the bounds for the bookmark bar items.
 373   void LayoutItems();
 374
 375   // Updates the visibility of the apps shortcut based on the pref value.
 376   void OnAppsPageShortcutVisibilityPrefChanged();
 377
 378   // Needed to react to kShowAppsShortcutInBookmarkBar changes.
 379   PrefChangeRegistrar profile_pref_registrar_;
 380
 381   // Used for opening urls.
 382   content::PageNavigator* page_navigator_;
 383
 384   // Model providing details as to the starred entries/folders that should be
 385   // shown. This is owned by the Profile.
 386   BookmarkModel* model_;
 387
 388   // Used to manage showing a Menu, either for the most recently bookmarked
 389   // entries, or for the starred folder.
 390   BookmarkMenuController* bookmark_menu_;
 391
 392   // Used when showing a menu for drag and drop. That is, if the user drags
 393   // over a folder this becomes non-null and manages the menu showing the
 394   // contents of the node.
 395   BookmarkMenuController* bookmark_drop_menu_;
 396
 397   // If non-NULL we're showing a context menu for one of the items on the
 398   // bookmark bar.
 399   scoped_ptr<BookmarkContextMenu> context_menu_;
 400
 401   // Shows the other bookmark entries.
 402   views::MenuButton* other_bookmarked_button_;
 403
 404   // Shows the Apps page shortcut.
 405   views::TextButton* apps_page_shortcut_;
 406
 407   // Task used to delay showing of the drop menu.
 408   base::WeakPtrFactory<BookmarkBarView> show_folder_method_factory_;
 409
 410   // Used to track drops on the bookmark bar view.
 411   scoped_ptr<DropInfo> drop_info_;
 412
 413   // Visible if not all the bookmark buttons fit.
 414   views::MenuButton* overflow_button_;
 415
 416   // Shows a text and a link to import bookmarks if there are no bookmarks in
 417   // the Bookmarks Bar.
 418   views::View* instructions_;
 419
 420   ButtonSeparatorView* bookmarks_separator_view_;
 421
 422   Browser* browser_;
 423   BrowserView* browser_view_;
 424
 425   // True if the owning browser is showing an infobar.
 426   bool infobar_visible_;
 427
 428   // Animation controlling showing and hiding of the bar.
 429   scoped_ptr<gfx::SlideAnimation> size_animation_;
 430
 431   // If the bookmark bubble is showing, this is the visible ancestor of the URL.
 432   // The visible ancestor is either the other_bookmarked_button_,
 433   // overflow_button_ or a button on the bar.
 434   views::CustomButton* throbbing_view_;
 435
 436   BookmarkBar::State bookmark_bar_state_;
 437
 438   // Are we animating to or from the detached state?
 439   bool animating_detached_;
 440
 441   DISALLOW_COPY_AND_ASSIGN(BookmarkBarView);
 442 };
 443
 444 #endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_BAR_VIEW_H_