ui/accessibility/platform/ax_platform_node_auralinux.h

   1 // Copyright 2015 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_ACCESSIBILITY_AX_PLATFORM_NODE_AURALINUX_H_
   6 #define UI_ACCESSIBILITY_AX_PLATFORM_NODE_AURALINUX_H_
   7
   8 #include <atk/atk.h>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "ui/accessibility/ax_export.h"
  12 #include "ui/accessibility/platform/ax_platform_node_base.h"
  13
  14 namespace base {
  15 class TaskRunner;
  16 }
  17
  18 namespace ui {
  19
  20 // Implements accessibility on Aura Linux using ATK.
  21 class AXPlatformNodeAuraLinux : public AXPlatformNodeBase {
  22  public:
  23   AXPlatformNodeAuraLinux();
  24
  25   // Set or get the root-level Application object that's the parent of all
  26   // top-level windows.
  27   AX_EXPORT static void SetApplication(AXPlatformNode* application);
  28   static AXPlatformNode* application() { return application_; }
  29
  30   // Do static initialization using the given task runner for file operations.
  31   AX_EXPORT static void StaticInitialize(
  32       scoped_refptr<base::TaskRunner> init_task_runner);
  33
  34   AtkRole GetAtkRole();
  35   void GetAtkState(AtkStateSet* state_set);
  36   void GetAtkRelations(AtkRelationSet* atk_relation_set);
  37   void GetExtents(gint* x, gint* y, gint* width, gint* height,
  38                   AtkCoordType coord_type);
  39   void GetPosition(gint* x, gint* y, AtkCoordType coord_type);
  40   void GetSize(gint* width, gint* height);
  41
  42   void SetExtentsRelativeToAtkCoordinateType(
  43       gint* x, gint* y, gint* width, gint* height,
  44       AtkCoordType coord_type);
  45
  46   // AXPlatformNode overrides.
  47   void Destroy() override;
  48   gfx::NativeViewAccessible GetNativeViewAccessible() override;
  49   void NotifyAccessibilityEvent(ui::AXEvent event_type) override;
  50
  51   // AXPlatformNodeBase overrides.
  52   void Init(AXPlatformNodeDelegate* delegate) override;
  53   int GetIndexInParent() override;
  54
  55  private:
  56   ~AXPlatformNodeAuraLinux() override;
  57
  58   // We own a reference to this ref-counted object.
  59   AtkObject* atk_object_;
  60
  61   // The root-level Application object that's the parent of all
  62   // top-level windows.
  63   static AXPlatformNode* application_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(AXPlatformNodeAuraLinux);
  66 };
  67
  68 }  // namespace ui
  69
  70 #endif  // UI_ACCESSIBILITY_AX_PLATFORM_NODE_AURALINUX_H_