chrome/browser/ui/aura/accessibility/ax_tree_source_aura.h

   1 // Copyright 2014 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_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_
   6 #define CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_
   7
   8 #include <map>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "chrome/browser/ui/aura/accessibility/ax_root_obj_wrapper.h"
  13 #include "ui/accessibility/ax_tree_source.h"
  14
  15 namespace views {
  16 class AXAuraObjWrapper;
  17 }  // namespace views
  18
  19 // This class exposes the views hierarchy as an accessibility tree permitting
  20 // use with other accessibility classes.
  21 class AXTreeSourceAura : public ui::AXTreeSource<views::AXAuraObjWrapper*> {
  22  public:
  23   AXTreeSourceAura();
  24   ~AXTreeSourceAura() override;
  25
  26   // A set of actions invoked on an Aura view.
  27   void DoDefault(int32 id);
  28   void Focus(int32 id);
  29   void MakeVisible(int32 id);
  30   void SetSelection(int32 id, int32 start, int32 end);
  31
  32   // AXTreeSource implementation.
  33   views::AXAuraObjWrapper* GetRoot() const override;
  34   views::AXAuraObjWrapper* GetFromId(int32 id) const override;
  35   int32 GetId(views::AXAuraObjWrapper* node) const override;
  36   void GetChildren(
  37       views::AXAuraObjWrapper* node,
  38       std::vector<views::AXAuraObjWrapper*>* out_children) const override;
  39   views::AXAuraObjWrapper* GetParent(
  40       views::AXAuraObjWrapper* node) const override;
  41   bool IsValid(views::AXAuraObjWrapper* node) const override;
  42   bool IsEqual(views::AXAuraObjWrapper* node1,
  43                views::AXAuraObjWrapper* node2) const override;
  44   views::AXAuraObjWrapper* GetNull() const override;
  45   void SerializeNode(views::AXAuraObjWrapper* node,
  46                      ui::AXNodeData* out_data) const override;
  47
  48   // Useful for debugging.
  49   std::string ToString(views::AXAuraObjWrapper* root, std::string prefix);
  50
  51  private:
  52   scoped_ptr<AXRootObjWrapper> root_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(AXTreeSourceAura);
  55 };
  56
  57 #endif  // CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AX_TREE_SOURCE_AURA_H_