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1 // Copyright 2015 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/webui_generator/web_ui_view.h" | |
6 | |
7 #include "base/bind_helpers.h" | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "components/login/localized_values_builder.h" | |
10 #include "components/webui_generator/data_source_util.h" | |
11 #include "components/webui_generator/view_model.h" | |
12 | |
13 namespace { | |
14 | |
15 const char kEventCallback[] = "eventFired"; | |
16 const char kContextChangedCallback[] = "contextChanged"; | |
17 const char kReadyCallback[] = "ready"; | |
18 | |
19 const char kMethodContextChanged[] = "contextChanged"; | |
20 | |
21 } // namespace | |
22 | |
23 namespace webui_generator { | |
24 | |
25 WebUIView::WebUIView(content::WebUI* web_ui, const std::string& id) | |
26 : View(id), web_ui_(web_ui), html_ready_(false), view_bound_(false) { | |
27 } | |
28 | |
29 WebUIView::~WebUIView() { | |
30 } | |
31 | |
32 void WebUIView::Init() { | |
33 View::Init(); | |
34 AddCallback(path() + "$" + kEventCallback, &WebUIView::HandleEvent); | |
35 AddCallback(path() + "$" + kContextChangedCallback, | |
36 &WebUIView::HandleContextChanged); | |
37 AddCallback(path() + "$" + kReadyCallback, &WebUIView::HandleHTMLReady); | |
38 } | |
39 | |
40 void WebUIView::SetUpDataSource(content::WebUIDataSource* data_source) { | |
41 DCHECK(IsRootView()); | |
42 webui_generator::SetUpDataSource(data_source); | |
43 ResourcesMap* resources_map = new ResourcesMap(); | |
44 SetUpDataSourceInternal(data_source, resources_map); | |
45 data_source->SetRequestFilter(base::Bind(&WebUIView::HandleDataRequest, | |
46 base::Unretained(this), | |
47 base::Owned(resources_map))); | |
48 } | |
49 | |
50 void WebUIView::OnReady() { | |
51 View::OnReady(); | |
52 if (html_ready_) | |
53 Bind(); | |
54 } | |
55 | |
56 void WebUIView::OnContextChanged(const base::DictionaryValue& diff) { | |
57 if (view_bound_) | |
58 web_ui_->CallJavascriptFunction(path() + "$" + kMethodContextChanged, diff); | |
59 | |
60 if (!pending_context_changes_) | |
61 pending_context_changes_.reset(new Context()); | |
62 | |
63 pending_context_changes_->ApplyChanges(diff, nullptr); | |
64 } | |
65 | |
66 void WebUIView::SetUpDataSourceInternal(content::WebUIDataSource* data_source, | |
67 ResourcesMap* resources_map) { | |
68 base::DictionaryValue strings; | |
69 auto builder = make_scoped_ptr( | |
70 new ::login::LocalizedValuesBuilder(GetType() + "$", &strings)); | |
71 AddLocalizedValues(builder.get()); | |
72 data_source->AddLocalizedStrings(strings); | |
73 AddResources(resources_map); | |
74 for (auto& id_child : children()) { | |
75 static_cast<WebUIView*>(id_child.second) | |
76 ->SetUpDataSourceInternal(data_source, resources_map); | |
77 } | |
78 } | |
79 | |
80 bool WebUIView::HandleDataRequest( | |
81 const ResourcesMap* resources, | |
82 const std::string& path, | |
83 const content::WebUIDataSource::GotDataCallback& got_data_callback) { | |
84 auto it = resources->find(path); | |
85 | |
86 if (it == resources->end()) | |
87 return false; | |
88 | |
89 got_data_callback.Run(it->second.get()); | |
90 return true; | |
91 } | |
92 | |
93 void WebUIView::HandleHTMLReady() { | |
94 html_ready_ = true; | |
95 if (ready()) | |
96 Bind(); | |
97 } | |
98 | |
99 void WebUIView::HandleContextChanged(const base::DictionaryValue* diff) { | |
100 UpdateContext(*diff); | |
101 } | |
102 | |
103 void WebUIView::Bind() { | |
104 view_bound_ = true; | |
105 if (pending_context_changes_) | |
106 OnContextChanged(pending_context_changes_->storage()); | |
107 | |
108 GetViewModel()->OnViewBound(); | |
109 } | |
110 | |
111 } // namespace webui_generator | |
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