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      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 UI_VIEWS_CONTROLS_TABBED_PANE_TABBED_PANE_H_
      6 #define UI_VIEWS_CONTROLS_TABBED_PANE_TABBED_PANE_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/strings/string16.h"
     11 #include "ui/views/view.h"
     12 
     13 namespace views {
     14 
     15 class Tab;
     16 class TabbedPaneListener;
     17 class TabStrip;
     18 
     19 // TabbedPane is a view that shows tabs. When the user clicks on a tab, the
     20 // associated view is displayed.
     21 class VIEWS_EXPORT TabbedPane : public View {
     22  public:
     23   // Internal class name.
     24   static const char kViewClassName[];
     25 
     26   TabbedPane();
     27   virtual ~TabbedPane();
     28 
     29   TabbedPaneListener* listener() const { return listener_; }
     30   void set_listener(TabbedPaneListener* listener) { listener_ = listener; }
     31 
     32   int selected_tab_index() const { return selected_tab_index_; }
     33 
     34   // Returns the number of tabs.
     35   int GetTabCount();
     36 
     37   // Returns the contents of the selected tab or NULL if there is none.
     38   View* GetSelectedTab();
     39 
     40   // Adds a new tab at the end of this TabbedPane with the specified |title|.
     41   // |contents| is the view displayed when the tab is selected and is owned by
     42   // the TabbedPane.
     43   void AddTab(const string16& title, View* contents);
     44 
     45   // Adds a new tab at |index| with |title|. |contents| is the view displayed
     46   // when the tab is selected and is owned by the TabbedPane. If the tabbed pane
     47   // is currently empty, the new tab is selected.
     48   void AddTabAtIndex(int index, const string16& title, View* contents);
     49 
     50   // Selects the tab at |index|, which must be valid.
     51   void SelectTabAt(int index);
     52 
     53   // Selects |tab| (the tabstrip view, not its content) if it is valid.
     54   void SelectTab(Tab* tab);
     55 
     56   // Overridden from View:
     57   virtual gfx::Size GetPreferredSize() OVERRIDE;
     58   virtual const char* GetClassName() const OVERRIDE;
     59 
     60  private:
     61    friend class TabStrip;
     62 
     63    // Get the Tab (the tabstrip view, not its content) at the valid |index|.
     64    Tab* GetTabAt(int index);
     65 
     66   // Overridden from View:
     67   virtual void Layout() OVERRIDE;
     68   virtual void ViewHierarchyChanged(
     69       const ViewHierarchyChangedDetails& details) OVERRIDE;
     70   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
     71   virtual void OnFocus() OVERRIDE;
     72   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
     73 
     74   // A listener notified when tab selection changes. Weak, not owned.
     75   TabbedPaneListener* listener_;
     76 
     77   // The tab strip and contents container. The child indices of these members
     78   // correspond to match each Tab with its respective content View.
     79   TabStrip* tab_strip_;
     80   View* contents_;
     81 
     82   // The selected tab index or -1 if invalid.
     83   int selected_tab_index_;
     84 
     85   DISALLOW_COPY_AND_ASSIGN(TabbedPane);
     86 };
     87 
     88 }  // namespace views
     89 
     90 #endif  // UI_VIEWS_CONTROLS_TABBED_PANE_TABBED_PANE_H_
     91