ui/views/controls/tabbed_pane/tabbed_pane.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 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   ~TabbedPane() override;
  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 base::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 base::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   gfx::Size GetPreferredSize() const override;
  58   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    void Layout() override;
  68    void ViewHierarchyChanged(
  69        const ViewHierarchyChangedDetails& details) override;
  70    bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
  71    void OnFocus() override;
  72    void GetAccessibleState(ui::AXViewState* 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_