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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_ | 5 #ifndef UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_ |
6 #define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_ | 6 #define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_ |
7 | 7 |
8 #include "ui/accessibility/ax_enums.h" | 8 #include "ui/accessibility/ax_enums.h" |
| 9 #include "ui/accessibility/ax_export.h" |
| 10 #include "ui/gfx/geometry/vector2d.h" |
| 11 #include "ui/gfx/native_widget_types.h" |
9 | 12 |
10 namespace ui { | 13 namespace ui { |
11 | 14 |
12 struct AXNodeData; | 15 struct AXNodeData; |
| 16 class AXPlatformNode; |
13 | 17 |
14 class AX_EXPORT AXPlatformNodeDelegate { | 18 class AX_EXPORT AXPlatformNodeDelegate { |
15 public: | 19 public: |
16 // Get the accessibility data that should be exposed for this node. | 20 // Get the accessibility data that should be exposed for this node. |
17 virtual AXNodeData* GetData() = 0; | 21 virtual AXNodeData* GetData() = 0; |
18 | 22 |
| 23 // Get the parent of the node unless it's the root, then it returns NULL. |
| 24 virtual gfx::NativeViewAccessible GetParent() = 0; |
| 25 |
19 // Get the number of children of this node. | 26 // Get the number of children of this node. |
20 virtual int GetChildCount() = 0; | 27 virtual int GetChildCount() = 0; |
21 | 28 |
22 // Get the child of a node from [0...GetChildCount() - 1] | 29 // Get the child of a node from [0...GetChildCount() - 1] |
23 virtual AXPlatformNode* ChildAtIndex(int index) = 0; | 30 virtual gfx::NativeViewAccessible ChildAtIndex(int index) = 0; |
24 | |
25 // Get the parent of the node unless it's the root, then it returns NULL. | |
26 virtual AXPlatformNode* GetParent() = 0; | |
27 | |
28 // Get the root of this tree of AXPlatformNode objects. The root's parent | |
29 // can be retrieved using GetParentOfRoot(). | |
30 virtual AXPlatformNode* GetRoot() = 0; | |
31 | |
32 // Get the node within this tree of AXPlatformNode objects that currently | |
33 // has focus. | |
34 virtual AXPlatformNode* GetFocus() = 0; | |
35 | |
36 // Get the index of this node in its parent. | |
37 virtual int GetIndexInParent() = 0; | |
38 | |
39 // Given x, y coordinates local to the root's coordinate space, return | |
40 // the deepest descendant node within those coordinates. | |
41 virtual AXPlatformNode* HitTest(int x, int y) = 0; | |
42 | |
43 // Get the parent of the root element. | |
44 virtual gfx::NativeViewAccessible GetParentOfRoot() = 0; | |
45 | |
46 // Get the accelerated widget that this accessibility tree is embedded in. | |
47 virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0; | |
48 | 31 |
49 // Get the offset to convert local coordinates to screen global coordinates. | 32 // Get the offset to convert local coordinates to screen global coordinates. |
50 virtual gfx::Vector2d GetGlobalCoordinateOffset() = 0; | 33 virtual gfx::Vector2d GetGlobalCoordinateOffset() = 0; |
51 | 34 |
52 // Get a negative number that can be used as an id for this node. | |
53 virtual int GetNegativeId() = 0; | |
54 | |
55 // Find a native object given its negative id. This may not be an object | |
56 // in this tree, so the return type is gfx::NativeViewAccessible. | |
57 virtual gfx::NativeViewAccessible GetFromNegativeId(int negative_id) = 0; | |
58 | |
59 // | |
60 // Actions. | |
61 // | |
62 | |
63 virtual void DoDefaultAction() = 0; | |
64 virtual void Focus() = 0; | |
65 | |
66 // | 35 // |
67 // Events. | 36 // Events. |
68 // | 37 // |
69 | |
70 virtual void NotifyAccessibilityEvent(ui::AXEvent event_type) = 0; | 38 virtual void NotifyAccessibilityEvent(ui::AXEvent event_type) = 0; |
71 | 39 |
72 }; | 40 }; |
73 | 41 |
74 } // namespace ui | 42 } // namespace ui |
75 | 43 |
76 #endif // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_ | 44 #endif // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_DELEGATE_H_ |
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