chrome/browser/ui/views/tabs/browser_tab_strip_controller.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_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
   6 #define CHROME_BROWSER_UI_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/prefs/pref_change_registrar.h"
  11 #include "chrome/browser/ui/tabs/hover_tab_selector.h"
  12 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  13 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
  14 #include "chrome/browser/ui/views/tabs/tab_strip_controller.h"
  15
  16 class Browser;
  17 class Tab;
  18 class TabStrip;
  19 struct TabRendererData;
  20
  21 namespace content {
  22 class WebContents;
  23 }
  24
  25 namespace ui {
  26 class ListSelectionModel;
  27 }
  28
  29 // An implementation of TabStripController that sources data from the
  30 // WebContentses in a TabStripModel.
  31 class BrowserTabStripController : public TabStripController,
  32                                   public TabStripModelObserver {
  33  public:
  34   BrowserTabStripController(Browser* browser, TabStripModel* model);
  35   virtual ~BrowserTabStripController();
  36
  37   void InitFromModel(TabStrip* tabstrip);
  38
  39   TabStripModel* model() const { return model_; }
  40
  41   bool IsCommandEnabledForTab(TabStripModel::ContextMenuCommand command_id,
  42                               Tab* tab) const;
  43   void ExecuteCommandForTab(TabStripModel::ContextMenuCommand command_id,
  44                             Tab* tab);
  45   bool IsTabPinned(Tab* tab) const;
  46
  47   // TabStripController implementation:
  48   virtual const ui::ListSelectionModel& GetSelectionModel() OVERRIDE;
  49   virtual int GetCount() const OVERRIDE;
  50   virtual bool IsValidIndex(int model_index) const OVERRIDE;
  51   virtual bool IsActiveTab(int model_index) const OVERRIDE;
  52   virtual int GetActiveIndex() const OVERRIDE;
  53   virtual bool IsTabSelected(int model_index) const OVERRIDE;
  54   virtual bool IsTabPinned(int model_index) const OVERRIDE;
  55   virtual bool IsNewTabPage(int model_index) const OVERRIDE;
  56   virtual void SelectTab(int model_index) OVERRIDE;
  57   virtual void ExtendSelectionTo(int model_index) OVERRIDE;
  58   virtual void ToggleSelected(int model_index) OVERRIDE;
  59   virtual void AddSelectionFromAnchorTo(int model_index) OVERRIDE;
  60   virtual void CloseTab(int model_index, CloseTabSource source) OVERRIDE;
  61   virtual void ShowContextMenuForTab(Tab* tab,
  62                                      const gfx::Point& p,
  63                                      ui::MenuSourceType source_type) OVERRIDE;
  64   virtual void UpdateLoadingAnimations() OVERRIDE;
  65   virtual int HasAvailableDragActions() const OVERRIDE;
  66   virtual void OnDropIndexUpdate(int index, bool drop_before) OVERRIDE;
  67   virtual void PerformDrop(bool drop_before,
  68                            int index,
  69                            const GURL& url) OVERRIDE;
  70   virtual bool IsCompatibleWith(TabStrip* other) const OVERRIDE;
  71   virtual void CreateNewTab() OVERRIDE;
  72   virtual void CreateNewTabWithLocation(const base::string16& loc) OVERRIDE;
  73   virtual bool IsIncognito() OVERRIDE;
  74   virtual void LayoutTypeMaybeChanged() OVERRIDE;
  75   virtual void OnStartedDraggingTabs() OVERRIDE;
  76   virtual void OnStoppedDraggingTabs() OVERRIDE;
  77   virtual void CheckFileSupported(const GURL& url) OVERRIDE;
  78
  79   // TabStripModelObserver implementation:
  80   virtual void TabInsertedAt(content::WebContents* contents,
  81                              int model_index,
  82                              bool is_active) OVERRIDE;
  83   virtual void TabDetachedAt(content::WebContents* contents,
  84                              int model_index) OVERRIDE;
  85   virtual void TabSelectionChanged(
  86       TabStripModel* tab_strip_model,
  87       const ui::ListSelectionModel& old_model) OVERRIDE;
  88   virtual void TabMoved(content::WebContents* contents,
  89                         int from_model_index,
  90                         int to_model_index) OVERRIDE;
  91   virtual void TabChangedAt(content::WebContents* contents,
  92                             int model_index,
  93                             TabChangeType change_type) OVERRIDE;
  94   virtual void TabReplacedAt(TabStripModel* tab_strip_model,
  95                              content::WebContents* old_contents,
  96                              content::WebContents* new_contents,
  97                              int model_index) OVERRIDE;
  98   virtual void TabPinnedStateChanged(content::WebContents* contents,
  99                                      int model_index) OVERRIDE;
 100   virtual void TabMiniStateChanged(content::WebContents* contents,
 101                                    int model_index) OVERRIDE;
 102   virtual void TabBlockedStateChanged(content::WebContents* contents,
 103                                       int model_index) OVERRIDE;
 104
 105  protected:
 106   // The context in which SetTabRendererDataFromModel is being called.
 107   enum TabStatus {
 108     NEW_TAB,
 109     EXISTING_TAB
 110   };
 111
 112   // Sets the TabRendererData from the TabStripModel.
 113   virtual void SetTabRendererDataFromModel(content::WebContents* contents,
 114                                            int model_index,
 115                                            TabRendererData* data,
 116                                            TabStatus tab_status);
 117
 118   Profile* profile() const { return model_->profile(); }
 119
 120   const TabStrip* tabstrip() const { return tabstrip_; }
 121
 122   const Browser* browser() const { return browser_; }
 123
 124  private:
 125   class TabContextMenuContents;
 126
 127   // Invokes tabstrip_->SetTabData.
 128   void SetTabDataAt(content::WebContents* web_contents, int model_index);
 129
 130   void StartHighlightTabsForCommand(
 131       TabStripModel::ContextMenuCommand command_id,
 132       Tab* tab);
 133   void StopHighlightTabsForCommand(
 134       TabStripModel::ContextMenuCommand command_id,
 135       Tab* tab);
 136
 137   // Adds a tab.
 138   void AddTab(content::WebContents* contents, int index, bool is_active);
 139
 140   // Resets the tabstrips layout type from prefs.
 141   void UpdateLayoutType();
 142
 143   // Notifies the tabstrip whether |url| is supported once a MIME type request
 144   // has completed.
 145   void OnFindURLMimeTypeCompleted(const GURL& url,
 146                                   const std::string& mime_type);
 147
 148   TabStripModel* model_;
 149
 150   TabStrip* tabstrip_;
 151
 152   // Non-owning pointer to the browser which is using this controller.
 153   Browser* browser_;
 154
 155   // If non-NULL it means we're showing a menu for the tab.
 156   scoped_ptr<TabContextMenuContents> context_menu_contents_;
 157
 158   // Helper for performing tab selection as a result of dragging over a tab.
 159   HoverTabSelector hover_tab_selector_;
 160
 161   // Forces the tabs to use the regular (non-immersive) style and the
 162   // top-of-window views to be revealed when the user is dragging |tabstrip|'s
 163   // tabs.
 164   scoped_ptr<ImmersiveRevealedLock> immersive_reveal_lock_;
 165
 166   PrefChangeRegistrar local_pref_registrar_;
 167
 168   base::WeakPtrFactory<BrowserTabStripController> weak_ptr_factory_;
 169
 170   DISALLOW_COPY_AND_ASSIGN(BrowserTabStripController);
 171 };
 172
 173 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_