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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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