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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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 CONTENT_RENDERER_ACCESSIBILITY_RENDER_ACCESSIBILITY_IMPL_H_ | 5 #ifndef CONTENT_RENDERER_ACCESSIBILITY_RENDER_ACCESSIBILITY_IMPL_H_ |
| 6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDER_ACCESSIBILITY_IMPL_H_ | 6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDER_ACCESSIBILITY_IMPL_H_ |
| 7 | 7 |
| 8 #include <vector> | 8 #include <vector> |
| 9 | 9 |
| 10 #include "base/containers/hash_tables.h" | 10 #include "base/containers/hash_tables.h" |
| 11 #include "base/macros.h" | 11 #include "base/macros.h" |
| 12 #include "base/memory/weak_ptr.h" | 12 #include "base/memory/weak_ptr.h" |
| 13 #include "content/common/ax_content_node_data.h" | 13 #include "content/common/ax_content_node_data.h" |
| 14 #include "content/public/renderer/render_accessibility.h" | 14 #include "content/public/renderer/render_accessibility.h" |
| 15 #include "content/public/renderer/render_frame_observer.h" | 15 #include "content/public/renderer/render_frame_observer.h" |
| 16 #include "content/renderer/accessibility/blink_ax_tree_source.h" | 16 #include "content/renderer/accessibility/blink_ax_tree_source.h" |
| 17 #include "third_party/WebKit/public/web/WebAXObject.h" | 17 #include "third_party/WebKit/public/web/WebAXObject.h" |
| 18 #include "ui/accessibility/ax_relative_bounds.h" | 18 #include "ui/accessibility/ax_relative_bounds.h" |
| 19 #include "ui/accessibility/ax_tree.h" | 19 #include "ui/accessibility/ax_tree.h" |
| 20 #include "ui/accessibility/ax_tree_serializer.h" | 20 #include "ui/accessibility/ax_tree_serializer.h" |
| 21 #include "ui/gfx/geometry/rect_f.h" | 21 #include "ui/gfx/geometry/rect_f.h" |
| 22 | 22 |
| 23 struct AccessibilityHostMsg_EventParams; | 23 struct AccessibilityHostMsg_EventParams; |
| 24 | 24 |
| 25 namespace blink { | 25 namespace blink { |
| 26 class WebDocument; | 26 class WebDocument; |
| 27 class WebNode; | 27 class WebNode; |
| 28 }; | 28 }; |
| 29 | 29 |
| 30 namespace ui { | |
| 31 struct AXActionData; | |
| 32 } | |
| 33 | |
| 34 namespace content { | 30 namespace content { |
| 35 class RenderFrameImpl; | 31 class RenderFrameImpl; |
| 36 | 32 |
| 37 // The browser process implements native accessibility APIs, allowing | 33 // The browser process implements native accessibility APIs, allowing |
| 38 // assistive technology (e.g., screen readers, magnifiers) to access and | 34 // assistive technology (e.g., screen readers, magnifiers) to access and |
| 39 // control the web contents with high-level APIs. These APIs are also used | 35 // control the web contents with high-level APIs. These APIs are also used |
| 40 // by automation tools, and Windows 8 uses them to determine when the | 36 // by automation tools, and Windows 8 uses them to determine when the |
| 41 // on-screen keyboard should be shown. | 37 // on-screen keyboard should be shown. |
| 42 // | 38 // |
| 43 // An instance of this class belongs to RenderFrameImpl. Accessibility is | 39 // An instance of this class belongs to RenderFrameImpl. Accessibility is |
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| 112 void SendLocationChanges(); | 108 void SendLocationChanges(); |
| 113 | 109 |
| 114 // The RenderFrameImpl that owns us. | 110 // The RenderFrameImpl that owns us. |
| 115 RenderFrameImpl* render_frame_; | 111 RenderFrameImpl* render_frame_; |
| 116 | 112 |
| 117 private: | 113 private: |
| 118 // RenderFrameObserver implementation. | 114 // RenderFrameObserver implementation. |
| 119 void OnDestruct() override; | 115 void OnDestruct() override; |
| 120 | 116 |
| 121 // Handlers for messages from the browser to the renderer. | 117 // Handlers for messages from the browser to the renderer. |
| 122 void OnPerformAction(const ui::AXActionData& data); | 118 void OnDoDefaultAction(int acc_obj_id); |
| 123 void OnEventsAck(int ack_token); | 119 void OnEventsAck(int ack_token); |
| 124 void OnFatalError(); | 120 void OnFatalError(); |
| 121 void OnHitTest(gfx::Point point); |
| 122 void OnSetAccessibilityFocus(int acc_obj_id); |
| 125 void OnReset(int reset_token); | 123 void OnReset(int reset_token); |
| 124 void OnScrollToMakeVisible(int acc_obj_id, gfx::Rect subfocus); |
| 125 void OnScrollToPoint(int acc_obj_id, gfx::Point point); |
| 126 void OnSetScrollOffset(int acc_obj_id, gfx::Point offset); |
| 127 void OnSetFocus(int acc_obj_id); |
| 128 void OnSetSelection(int anchor_acc_obj_id, |
| 129 int anchor_offset, |
| 130 int focus_acc_obj_id, |
| 131 int focus_offset); |
| 132 void OnSetValue(int acc_obj_id, base::string16 value); |
| 133 void OnShowContextMenu(int acc_obj_id); |
| 126 | 134 |
| 127 void OnHitTest(const gfx::Point& point); | |
| 128 void OnSetAccessibilityFocus(const blink::WebAXObject& obj); | |
| 129 void AddPluginTreeToUpdate(AXContentTreeUpdate* update); | 135 void AddPluginTreeToUpdate(AXContentTreeUpdate* update); |
| 130 void ScrollPlugin(int id_to_make_visible); | 136 void ScrollPlugin(int id_to_make_visible); |
| 131 | 137 |
| 132 // Events from Blink are collected until they are ready to be | 138 // Events from Blink are collected until they are ready to be |
| 133 // sent to the browser. | 139 // sent to the browser. |
| 134 std::vector<AccessibilityHostMsg_EventParams> pending_events_; | 140 std::vector<AccessibilityHostMsg_EventParams> pending_events_; |
| 135 | 141 |
| 136 // The adapter that exposes Blink's accessibility tree to AXTreeSerializer. | 142 // The adapter that exposes Blink's accessibility tree to AXTreeSerializer. |
| 137 BlinkAXTreeSource tree_source_; | 143 BlinkAXTreeSource tree_source_; |
| 138 | 144 |
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| 172 | 178 |
| 173 // So we can queue up tasks to be executed later. | 179 // So we can queue up tasks to be executed later. |
| 174 base::WeakPtrFactory<RenderAccessibilityImpl> weak_factory_; | 180 base::WeakPtrFactory<RenderAccessibilityImpl> weak_factory_; |
| 175 | 181 |
| 176 DISALLOW_COPY_AND_ASSIGN(RenderAccessibilityImpl); | 182 DISALLOW_COPY_AND_ASSIGN(RenderAccessibilityImpl); |
| 177 }; | 183 }; |
| 178 | 184 |
| 179 } // namespace content | 185 } // namespace content |
| 180 | 186 |
| 181 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ | 187 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ |
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