blob: ac59130bace0061d77cf42805868d10ec69a279b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_H_
#define UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_H_
#include "base/macros.h"
#include "build/build_config.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/accessibility/platform/ax_platform_node.h"
#include "ui/accessibility/platform/ax_platform_node_delegate.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/views_export.h"
#include "ui/views/widget/widget_observer.h"
// Set PLATFORM_HAS_NATIVE_VIEW_ACCESSIBILITY_IMPL if this platform has a
// specific implementation of NativeViewAccessibility::Create().
#undef PLATFORM_HAS_NATIVE_VIEW_ACCESSIBILITY_IMPL
#if defined(OS_WIN)
#define PLATFORM_HAS_NATIVE_VIEW_ACCESSIBILITY_IMPL 1
#endif
#if defined(OS_LINUX) && defined(USE_X11) && !defined(OS_CHROMEOS)
#define PLATFORM_HAS_NATIVE_VIEW_ACCESSIBILITY_IMPL 1
#endif
namespace views {
class View;
class Widget;
class VIEWS_EXPORT NativeViewAccessibility
: public ui::AXPlatformNodeDelegate,
public WidgetObserver {
public:
static NativeViewAccessibility* Create(View* view);
gfx::NativeViewAccessible GetNativeObject();
// Call Destroy rather than deleting this, because the subclass may
// use reference counting.
virtual void Destroy();
void NotifyAccessibilityEvent(ui::AXEvent event_type);
// ui::AXPlatformNodeDelegate
const ui::AXNodeData& GetData() override;
int GetChildCount() override;
gfx::NativeViewAccessible ChildAtIndex(int index) override;
gfx::NativeViewAccessible GetParent() override;
gfx::Vector2d GetGlobalCoordinateOffset() override;
gfx::NativeViewAccessible HitTestSync(int x, int y) override;
gfx::NativeViewAccessible GetFocus() override;
gfx::AcceleratedWidget GetTargetForNativeAccessibilityEvent() override;
void DoDefaultAction() override;
bool SetStringValue(const base::string16& new_value) override;
// WidgetObserver
void OnWidgetDestroying(Widget* widget) override;
Widget* parent_widget() const { return parent_widget_; }
void SetParentWidget(Widget* parent_widget);
protected:
NativeViewAccessibility(View* view);
~NativeViewAccessibility() override;
// Weak. Owns this.
View* view_;
// Weak. Uses WidgetObserver to clear. This is set on the root view for
// a widget that's owned by another widget, so we can walk back up the
// tree.
Widget* parent_widget_;
private:
void PopulateChildWidgetVector(std::vector<Widget*>* result_child_widgets);
// We own this, but it is reference-counted on some platforms so we can't use
// a scoped_ptr. It is dereferenced in the destructor.
ui::AXPlatformNode* ax_node_;
ui::AXNodeData data_;
DISALLOW_COPY_AND_ASSIGN(NativeViewAccessibility);
};
} // namespace views
#endif // UI_VIEWS_ACCESSIBILITY_NATIVE_VIEW_ACCESSIBILITY_H_
|
