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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "components/html_viewer/ax_provider_impl.h" | |
6 | |
7 #include <utility> | |
8 | |
9 #include "components/html_viewer/blink_basic_type_converters.h" | |
10 #include "third_party/WebKit/public/platform/WebURL.h" | |
11 #include "third_party/WebKit/public/web/WebAXObject.h" | |
12 #include "third_party/WebKit/public/web/WebSettings.h" | |
13 #include "third_party/WebKit/public/web/WebView.h" | |
14 | |
15 using blink::WebAXObject; | |
16 using blink::WebURL; | |
17 using blink::WebView; | |
18 | |
19 using mojo::Array; | |
20 using mojo::AxNodePtr; | |
21 using mojo::String; | |
22 | |
23 namespace html_viewer { | |
24 | |
25 AxProviderImpl::AxProviderImpl(WebView* web_view, | |
26 mojo::InterfaceRequest<mojo::AxProvider> request) | |
27 : web_view_(web_view), binding_(this, std::move(request)) {} | |
28 | |
29 AxProviderImpl::~AxProviderImpl() { | |
30 } | |
31 | |
32 void AxProviderImpl::GetTree( | |
33 const mojo::Callback<void(Array<AxNodePtr> nodes)>& callback) { | |
34 web_view_->settings()->setAccessibilityEnabled(true); | |
35 web_view_->settings()->setInlineTextBoxAccessibilityEnabled(true); | |
36 | |
37 Array<AxNodePtr> result; | |
38 Populate(web_view_->accessibilityObject(), 0, 0, &result); | |
39 callback.Run(std::move(result)); | |
40 } | |
41 | |
42 int AxProviderImpl::Populate(const WebAXObject& ax_object, | |
43 int parent_id, | |
44 int next_sibling_id, | |
45 Array<AxNodePtr>* result) { | |
46 AxNodePtr ax_node(ConvertAxNode(ax_object, parent_id, next_sibling_id)); | |
47 int ax_node_id = ax_node->id; | |
48 if (ax_node.is_null()) | |
49 return 0; | |
50 | |
51 result->push_back(std::move(ax_node)); | |
52 | |
53 unsigned num_children = ax_object.childCount(); | |
54 next_sibling_id = 0; | |
55 for (unsigned i = 0; i < num_children; ++i) { | |
56 int new_id = Populate(ax_object.childAt(num_children - i - 1), | |
57 ax_node_id, | |
58 next_sibling_id, | |
59 result); | |
60 if (new_id != 0) | |
61 next_sibling_id = new_id; | |
62 } | |
63 | |
64 return ax_node_id; | |
65 } | |
66 | |
67 AxNodePtr AxProviderImpl::ConvertAxNode(const WebAXObject& ax_object, | |
68 int parent_id, | |
69 int next_sibling_id) { | |
70 AxNodePtr result; | |
71 if (!const_cast<WebAXObject&>(ax_object).updateLayoutAndCheckValidity()) | |
72 return result; | |
73 | |
74 result = mojo::AxNode::New(); | |
75 result->id = static_cast<int>(ax_object.axID()); | |
76 result->parent_id = parent_id; | |
77 result->next_sibling_id = next_sibling_id; | |
78 result->bounds = mojo::Rect::From(ax_object.boundingBoxRect()); | |
79 | |
80 if (ax_object.isAnchor()) { | |
81 result->link = mojo::AxLink::New(); | |
82 result->link->url = String::From(ax_object.url().string()); | |
83 } else if (ax_object.childCount() == 0) { | |
84 blink::WebString name = ax_object.name(); | |
85 if (!name.isEmpty()) { | |
86 result->text = mojo::AxText::New(); | |
87 result->text->content = String::From(name); | |
88 } | |
89 } | |
90 | |
91 return result; | |
92 } | |
93 | |
94 } // namespace html_viewer | |
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