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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 #include "content/renderer/accessibility/renderer_accessibility_focus_only.h" | 5 #include "content/renderer/accessibility/renderer_accessibility_focus_only.h" |
6 | 6 |
7 #include "content/renderer/render_frame_impl.h" | |
8 #include "content/renderer/render_view_impl.h" | 7 #include "content/renderer/render_view_impl.h" |
9 #include "third_party/WebKit/public/web/WebDocument.h" | 8 #include "third_party/WebKit/public/web/WebDocument.h" |
10 #include "third_party/WebKit/public/web/WebElement.h" | 9 #include "third_party/WebKit/public/web/WebElement.h" |
11 #include "third_party/WebKit/public/web/WebLocalFrame.h" | 10 #include "third_party/WebKit/public/web/WebLocalFrame.h" |
12 #include "third_party/WebKit/public/web/WebNode.h" | 11 #include "third_party/WebKit/public/web/WebNode.h" |
13 #include "third_party/WebKit/public/web/WebView.h" | 12 #include "third_party/WebKit/public/web/WebView.h" |
14 #include "ui/accessibility/ax_node_data.h" | 13 #include "ui/accessibility/ax_node_data.h" |
15 | 14 |
16 using blink::WebDocument; | 15 using blink::WebDocument; |
17 using blink::WebElement; | 16 using blink::WebElement; |
18 using blink::WebNode; | 17 using blink::WebNode; |
19 using blink::WebView; | 18 using blink::WebView; |
20 | 19 |
21 namespace { | 20 namespace { |
22 // The root node will always have id 1. Let each child node have a new | 21 // The root node will always have id 1. Let each child node have a new |
23 // id starting with 2. | 22 // id starting with 2. |
24 const int kInitialId = 2; | 23 const int kInitialId = 2; |
25 } | 24 } |
26 | 25 |
27 namespace content { | 26 namespace content { |
28 | 27 |
29 RendererAccessibilityFocusOnly::RendererAccessibilityFocusOnly( | 28 RendererAccessibilityFocusOnly::RendererAccessibilityFocusOnly( |
30 RenderFrameImpl* render_frame) | 29 RenderViewImpl* render_view) |
31 : RendererAccessibility(render_frame), | 30 : RendererAccessibility(render_view), |
32 next_id_(kInitialId) { | 31 next_id_(kInitialId) { |
33 } | 32 } |
34 | 33 |
35 RendererAccessibilityFocusOnly::~RendererAccessibilityFocusOnly() { | 34 RendererAccessibilityFocusOnly::~RendererAccessibilityFocusOnly() { |
36 } | 35 } |
37 | 36 |
38 void RendererAccessibilityFocusOnly::HandleWebAccessibilityEvent( | 37 void RendererAccessibilityFocusOnly::HandleWebAccessibilityEvent( |
39 const blink::WebAXObject& obj, blink::WebAXEvent event) { | 38 const blink::WebAXObject& obj, blink::WebAXEvent event) { |
40 // Do nothing. | 39 // Do nothing. |
41 } | 40 } |
42 | 41 |
43 RendererAccessibilityType RendererAccessibilityFocusOnly::GetType() { | 42 RendererAccessibilityType RendererAccessibilityFocusOnly::GetType() { |
44 return RendererAccessibilityTypeFocusOnly; | 43 return RendererAccessibilityTypeFocusOnly; |
45 } | 44 } |
46 | 45 |
47 void RendererAccessibilityFocusOnly::FocusedNodeChanged(const WebNode& node) { | 46 void RendererAccessibilityFocusOnly::FocusedNodeChanged(const WebNode& node) { |
48 // Send the new accessible tree and post a native focus event. | 47 // Send the new accessible tree and post a native focus event. |
49 HandleFocusedNodeChanged(node, true); | 48 HandleFocusedNodeChanged(node, true); |
50 } | 49 } |
51 | 50 |
52 void RendererAccessibilityFocusOnly::DidFinishLoad() { | 51 void RendererAccessibilityFocusOnly::DidFinishLoad( |
| 52 blink::WebLocalFrame* frame) { |
| 53 WebView* view = render_view()->GetWebView(); |
| 54 if (view->focusedFrame() != frame) |
| 55 return; |
| 56 |
| 57 WebDocument document = frame->document(); |
53 // Send an accessible tree to the browser, but do not post a native | 58 // Send an accessible tree to the browser, but do not post a native |
54 // focus event. This is important so that if focus is initially in an | 59 // focus event. This is important so that if focus is initially in an |
55 // editable text field, Windows will know to pop up the keyboard if the | 60 // editable text field, Windows will know to pop up the keyboard if the |
56 // user touches it and focus doesn't change. | 61 // user touches it and focus doesn't change. |
57 const WebDocument& document = GetMainDocument(); | |
58 HandleFocusedNodeChanged(document.focusedElement(), false); | 62 HandleFocusedNodeChanged(document.focusedElement(), false); |
59 } | 63 } |
60 | 64 |
61 void RendererAccessibilityFocusOnly::HandleFocusedNodeChanged( | 65 void RendererAccessibilityFocusOnly::HandleFocusedNodeChanged( |
62 const WebNode& node, | 66 const WebNode& node, |
63 bool send_focus_event) { | 67 bool send_focus_event) { |
64 const WebDocument& document = GetMainDocument(); | 68 const WebDocument& document = GetMainDocument(); |
65 if (document.isNull()) | 69 if (document.isNull()) |
66 return; | 70 return; |
67 | 71 |
68 bool node_has_focus; | 72 bool node_has_focus; |
69 bool node_is_editable_text; | 73 bool node_is_editable_text; |
70 // Check HasIMETextFocus first, because it will correctly handle | 74 // Check HasIMETextFocus first, because it will correctly handle |
71 // focus in a text box inside a ppapi plug-in. Otherwise fall back on | 75 // focus in a text box inside a ppapi plug-in. Otherwise fall back on |
72 // checking the focused node in Blink. | 76 // checking the focused node in Blink. |
73 if (render_frame_->render_view()->HasIMETextFocus()) { | 77 if (render_view_->HasIMETextFocus()) { |
74 node_has_focus = true; | 78 node_has_focus = true; |
75 node_is_editable_text = true; | 79 node_is_editable_text = true; |
76 } else { | 80 } else { |
77 node_has_focus = !node.isNull(); | 81 node_has_focus = !node.isNull(); |
78 node_is_editable_text = | 82 node_is_editable_text = |
79 node_has_focus && render_frame_->render_view()->IsEditableNode(node); | 83 node_has_focus && render_view_->IsEditableNode(node); |
80 } | 84 } |
81 | 85 |
82 std::vector<AccessibilityHostMsg_EventParams> events; | 86 std::vector<AccessibilityHostMsg_EventParams> events; |
83 events.push_back(AccessibilityHostMsg_EventParams()); | 87 events.push_back(AccessibilityHostMsg_EventParams()); |
84 AccessibilityHostMsg_EventParams& event = events[0]; | 88 AccessibilityHostMsg_EventParams& event = events[0]; |
85 | 89 |
86 // If we want to update the browser's accessibility tree but not send a | 90 // If we want to update the browser's accessibility tree but not send a |
87 // native focus changed event, we can send a LayoutComplete | 91 // native focus changed event, we can send a LayoutComplete |
88 // event, which doesn't post a native event on Windows. | 92 // event, which doesn't post a native event on Windows. |
89 event.event_type = | 93 event.event_type = |
90 send_focus_event ? ui::AX_EVENT_FOCUS : ui::AX_EVENT_LAYOUT_COMPLETE; | 94 send_focus_event ? ui::AX_EVENT_FOCUS : ui::AX_EVENT_LAYOUT_COMPLETE; |
91 | 95 |
92 // Set the id that the event applies to: the root node if nothing | 96 // Set the id that the event applies to: the root node if nothing |
93 // has focus, otherwise the focused node. | 97 // has focus, otherwise the focused node. |
94 event.id = node_has_focus ? next_id_ : 1; | 98 event.id = node_has_focus ? next_id_ : 1; |
95 | 99 |
96 event.update.nodes.resize(2); | 100 event.update.nodes.resize(2); |
97 ui::AXNodeData& root = event.update.nodes[0]; | 101 ui::AXNodeData& root = event.update.nodes[0]; |
98 ui::AXNodeData& child = event.update.nodes[1]; | 102 ui::AXNodeData& child = event.update.nodes[1]; |
99 | 103 |
100 // Always include the root of the tree, the document. It always has id 1. | 104 // Always include the root of the tree, the document. It always has id 1. |
101 root.id = 1; | 105 root.id = 1; |
102 root.role = ui::AX_ROLE_ROOT_WEB_AREA; | 106 root.role = ui::AX_ROLE_ROOT_WEB_AREA; |
103 root.state = | 107 root.state = |
104 (1 << ui::AX_STATE_READ_ONLY) | | 108 (1 << ui::AX_STATE_READ_ONLY) | |
105 (1 << ui::AX_STATE_FOCUSABLE); | 109 (1 << ui::AX_STATE_FOCUSABLE); |
106 if (!node_has_focus) | 110 if (!node_has_focus) |
107 root.state |= (1 << ui::AX_STATE_FOCUSED); | 111 root.state |= (1 << ui::AX_STATE_FOCUSED); |
108 root.location = gfx::Rect(render_frame_->render_view()->size()); | 112 root.location = gfx::Rect(render_view_->size()); |
109 root.child_ids.push_back(next_id_); | 113 root.child_ids.push_back(next_id_); |
110 | 114 |
111 child.id = next_id_; | 115 child.id = next_id_; |
112 child.role = ui::AX_ROLE_GROUP; | 116 child.role = ui::AX_ROLE_GROUP; |
113 | 117 |
114 if (!node.isNull() && node.isElementNode()) { | 118 if (!node.isNull() && node.isElementNode()) { |
115 child.location = gfx::Rect( | 119 child.location = gfx::Rect( |
116 const_cast<WebNode&>(node).to<WebElement>().boundsInViewportSpace()); | 120 const_cast<WebNode&>(node).to<WebElement>().boundsInViewportSpace()); |
117 } else if (render_frame_->render_view()->HasIMETextFocus()) { | 121 } else if (render_view_->HasIMETextFocus()) { |
118 child.location = root.location; | 122 child.location = root.location; |
119 } else { | 123 } else { |
120 child.location = gfx::Rect(); | 124 child.location = gfx::Rect(); |
121 } | 125 } |
122 | 126 |
123 if (node_has_focus) { | 127 if (node_has_focus) { |
124 child.state = | 128 child.state = |
125 (1 << ui::AX_STATE_FOCUSABLE) | | 129 (1 << ui::AX_STATE_FOCUSABLE) | |
126 (1 << ui::AX_STATE_FOCUSED); | 130 (1 << ui::AX_STATE_FOCUSED); |
127 if (!node_is_editable_text) | 131 if (!node_is_editable_text) |
(...skipping 14 matching lines...) Expand all Loading... |
142 | 146 |
143 Send(new AccessibilityHostMsg_Events(routing_id(), events)); | 147 Send(new AccessibilityHostMsg_Events(routing_id(), events)); |
144 | 148 |
145 // Increment the id, wrap back when we get past a million. | 149 // Increment the id, wrap back when we get past a million. |
146 next_id_++; | 150 next_id_++; |
147 if (next_id_ > 1000000) | 151 if (next_id_ > 1000000) |
148 next_id_ = kInitialId; | 152 next_id_ = kInitialId; |
149 } | 153 } |
150 | 154 |
151 } // namespace content | 155 } // namespace content |
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