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Side by Side Diff: content/renderer/accessibility/renderer_accessibility_focus_only.h

Issue 273423004: Migrate accessibility from RenderView to RenderFrame. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Rebase Created 6 years, 5 months ago
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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_FOCUS_ONLY_H_ 5 #ifndef CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_FOCUS_ONLY_H_
6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_FOCUS_ONLY_H_ 6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_FOCUS_ONLY_H_
7 7
8 #include "content/renderer/accessibility/renderer_accessibility.h" 8 #include "content/renderer/accessibility/renderer_accessibility.h"
9 9
10 namespace content { 10 namespace content {
11 11
12 // This is an accsessibility implementation that only handles whatever 12 // This is an accessibility implementation that only handles whatever
13 // node has focus, ignoring everything else. It's here because on Windows 8, 13 // node has focus, ignoring everything else. It's here because on Windows 8,
14 // we need to use accessibility APIs to tell the operating system when a 14 // we need to use accessibility APIs to tell the operating system when a
15 // touch should pop up the on-screen keyboard, but it's not worth the 15 // touch should pop up the on-screen keyboard, but it's not worth the
16 // performance overhead to enable full accessibility support. 16 // performance overhead to enable full accessibility support.
17 // 17 //
18 // Here's how the on-screen keyboard works in Windows 8 "Metro-style" apps: 18 // Here's how the on-screen keyboard works in Windows 8 "Metro-style" apps:
19 // 19 //
20 // 1. The user touches a control. 20 // 1. The user touches a control.
21 // 2. If the application determines focus moves to an editable text control, 21 // 2. If the application determines focus moves to an editable text control,
22 // it sends a native focus event, pointing to a native accessibility object 22 // it sends a native focus event, pointing to a native accessibility object
(...skipping 19 matching lines...) Expand all
42 // 42 //
43 // Sometimes, touching an element other than a text box will result in a 43 // Sometimes, touching an element other than a text box will result in a
44 // text box getting focus. We want the on-screen keyboard to pop up in those 44 // text box getting focus. We want the on-screen keyboard to pop up in those
45 // cases, so we "cheat" more and always send the dimensions of the whole 45 // cases, so we "cheat" more and always send the dimensions of the whole
46 // window as the bounds of the child object. That way, a touch that leads 46 // window as the bounds of the child object. That way, a touch that leads
47 // to a text box getting focus will always open the on-screen keyboard, 47 // to a text box getting focus will always open the on-screen keyboard,
48 // regardless of the relation between the touch location and the text box 48 // regardless of the relation between the touch location and the text box
49 // bounds. 49 // bounds.
50 class RendererAccessibilityFocusOnly : public RendererAccessibility { 50 class RendererAccessibilityFocusOnly : public RendererAccessibility {
51 public: 51 public:
52 explicit RendererAccessibilityFocusOnly(RenderViewImpl* render_view); 52 explicit RendererAccessibilityFocusOnly(RenderFrameImpl* render_frame);
53 virtual ~RendererAccessibilityFocusOnly(); 53 virtual ~RendererAccessibilityFocusOnly();
54 54
55 // RendererAccessibility implementation. 55 // RendererAccessibility implementation.
56 virtual void HandleWebAccessibilityEvent( 56 virtual void HandleWebAccessibilityEvent(
57 const blink::WebAXObject& obj, blink::WebAXEvent event) OVERRIDE; 57 const blink::WebAXObject& obj, blink::WebAXEvent event) OVERRIDE;
58 virtual RendererAccessibilityType GetType() OVERRIDE; 58 virtual RendererAccessibilityType GetType() OVERRIDE;
59 virtual void FocusedNodeChanged(const blink::WebNode& node) OVERRIDE;
59 60
60 // RenderView::Observer implementation. 61 // RenderFrameObserver implementation.
61 virtual void FocusedNodeChanged(const blink::WebNode& node) OVERRIDE; 62 virtual void DidFinishLoad() OVERRIDE;
62 virtual void DidFinishLoad(blink::WebLocalFrame* frame) OVERRIDE;
63 63
64 private: 64 private:
65 void HandleFocusedNodeChanged(const blink::WebNode& node, 65 void HandleFocusedNodeChanged(const blink::WebNode& node,
66 bool send_focus_event); 66 bool send_focus_event);
67 67
68 int next_id_; 68 int next_id_;
69 69
70 DISALLOW_COPY_AND_ASSIGN(RendererAccessibilityFocusOnly); 70 DISALLOW_COPY_AND_ASSIGN(RendererAccessibilityFocusOnly);
71 }; 71 };
72 72
73 } // namespace content 73 } // namespace content
74 74
75 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_FOCUS_ONLY_H_ 75 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_FOCUS_ONLY_H_
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