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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_RENDERER_ACCESSIBILITY_H_ | 5 #ifndef CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ |
| 6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ | 6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ |
| 7 | 7 |
| 8 #include "content/common/accessibility_messages.h" | 8 #include "content/common/accessibility_messages.h" |
| 9 #include "content/public/renderer/render_view_observer.h" | 9 #include "content/public/renderer/render_view_observer.h" |
| 10 #include "third_party/WebKit/public/web/WebAXObject.h" | 10 #include "third_party/WebKit/public/web/WebAXObject.h" |
| 11 | 11 |
| 12 namespace blink { | 12 namespace blink { |
| 13 class WebDocument; | 13 class WebDocument; |
| 14 }; | 14 }; |
| 15 | 15 |
| 16 namespace content { | 16 namespace content { |
| 17 class RenderViewImpl; | 17 class RenderFrameImpl; |
| 18 | 18 |
| 19 enum RendererAccessibilityType { | 19 enum RendererAccessibilityType { |
| 20 // Turns on Blink accessibility and provides a full accessibility | 20 // Turns on Blink accessibility and provides a full accessibility |
| 21 // implementation for when assistive technology is running. | 21 // implementation for when assistive technology is running. |
| 22 RendererAccessibilityTypeComplete, | 22 RendererAccessibilityTypeComplete, |
| 23 | 23 |
| 24 // Does not turn on Blink accessibility. Only sends a minimal accessible tree | 24 // Does not turn on Blink accessibility. Only sends a minimal accessible tree |
| 25 // to the browser whenever focus changes. This mode is currently used to | 25 // to the browser whenever focus changes. This mode is currently used to |
| 26 // support opening the on-screen keyboard in response to touch events on | 26 // support opening the on-screen keyboard in response to touch events on |
| 27 // Windows 8 in Metro mode. | 27 // Windows 8 in Metro mode. |
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| 53 // assistive technology is running. | 53 // assistive technology is running. |
| 54 // | 54 // |
| 55 // RendererAccessibilityFocusOnly - does not turn on Blink | 55 // RendererAccessibilityFocusOnly - does not turn on Blink |
| 56 // accessibility. Only sends a minimal accessible tree to the | 56 // accessibility. Only sends a minimal accessible tree to the |
| 57 // browser whenever focus changes. This mode is currently used | 57 // browser whenever focus changes. This mode is currently used |
| 58 // to support opening the on-screen keyboard in response to | 58 // to support opening the on-screen keyboard in response to |
| 59 // touch events on Windows 8 in Metro mode. | 59 // touch events on Windows 8 in Metro mode. |
| 60 // | 60 // |
| 61 class CONTENT_EXPORT RendererAccessibility : public RenderViewObserver { | 61 class CONTENT_EXPORT RendererAccessibility : public RenderViewObserver { |
| 62 public: | 62 public: |
| 63 explicit RendererAccessibility(RenderViewImpl* render_view); | 63 explicit RendererAccessibility(RenderFrameImpl* render_frame); |
| 64 virtual ~RendererAccessibility(); | 64 virtual ~RendererAccessibility(); |
| 65 | 65 |
| 66 // Called when an accessibility notification occurs in Blink. | 66 // Called when an accessibility notification occurs in Blink. |
| 67 virtual void HandleWebAccessibilityEvent( | 67 virtual void HandleWebAccessibilityEvent( |
| 68 const blink::WebAXObject& obj, blink::WebAXEvent event) = 0; | 68 const blink::WebAXObject& obj, blink::WebAXEvent event) = 0; |
| 69 | 69 |
| 70 // Gets the type of this RendererAccessibility object. Primarily intended for | 70 // Gets the type of this RendererAccessibility object. Primarily intended for |
| 71 // testing. | 71 // testing. |
| 72 virtual RendererAccessibilityType GetType() = 0; | 72 virtual RendererAccessibilityType GetType() = 0; |
| 73 | 73 |
| 74 protected: | 74 protected: |
| 75 // Returns the main top-level document for this page, or NULL if there's | 75 // Returns the main top-level document for this page, or NULL if there's |
| 76 // no view or frame. | 76 // no view or frame. |
| 77 blink::WebDocument GetMainDocument(); | 77 blink::WebDocument GetMainDocument(); |
| 78 | 78 |
| 79 #ifndef NDEBUG | 79 #ifndef NDEBUG |
| 80 const std::string AccessibilityEventToString(ui::AXEvent event); | 80 const std::string AccessibilityEventToString(ui::AXEvent event); |
| 81 #endif | 81 #endif |
| 82 | 82 |
| 83 // The RenderViewImpl that owns us. | 83 // The RenderFrameImpl that owns us. |
| 84 RenderViewImpl* render_view_; | 84 RenderFrameImpl* render_frame_; |
| 85 | 85 |
| 86 // True if verbose logging of accessibility events is on. | 86 // True if verbose logging of accessibility events is on. |
| 87 bool logging_; | 87 bool logging_; |
| 88 | 88 |
| 89 DISALLOW_COPY_AND_ASSIGN(RendererAccessibility); | 89 DISALLOW_COPY_AND_ASSIGN(RendererAccessibility); |
| 90 }; | 90 }; |
| 91 | 91 |
| 92 } // namespace content | 92 } // namespace content |
| 93 | 93 |
| 94 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ | 94 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ |
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