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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/view.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "components/webui_generator/view_model.h" | |
10 | |
11 namespace webui_generator { | |
12 | |
13 View::View(const std::string& id) | |
14 : parent_(NULL), | |
15 id_(id), | |
16 ready_children_(0), | |
17 view_model_ready_(false), | |
18 ready_(false), | |
19 weak_factory_(this) { | |
20 } | |
21 | |
22 View::~View() { | |
23 } | |
24 | |
25 void View::Init() { | |
26 CreateAndAddChildren(); | |
27 | |
28 if (!IsRootView()) | |
29 path_ = parent_->path() + "$"; | |
30 | |
31 path_ += id_; | |
32 view_model_.reset(CreateViewModel()); | |
33 view_model_->SetView(this); | |
34 | |
35 for (auto& id_child : children_) | |
36 id_child.second->Init(); | |
37 | |
38 if (children_.empty()) | |
39 OnChildrenReady(); | |
40 } | |
41 | |
42 bool View::IsRootView() const { | |
43 return !parent_; | |
44 } | |
45 | |
46 ViewModel* View::GetViewModel() const { | |
47 return view_model_.get(); | |
48 } | |
49 | |
50 void View::OnViewModelReady() { | |
51 view_model_ready_ = true; | |
52 if (ready_children_ == static_cast<int>(children_.size())) | |
53 OnReady(); | |
54 } | |
55 | |
56 View* View::GetChild(const std::string& id) const { | |
57 auto it = children_.find(id); | |
58 if (it == children_.end()) | |
59 return nullptr; | |
60 | |
61 return it->second; | |
62 } | |
63 | |
64 void View::OnReady() { | |
65 if (ready_) | |
66 return; | |
67 | |
68 ready_ = true; | |
69 if (!IsRootView()) | |
70 parent_->OnChildReady(this); | |
71 } | |
72 | |
73 void View::UpdateContext(const base::DictionaryValue& diff) { | |
74 DCHECK(ready_); | |
75 view_model_->UpdateContext(diff); | |
76 } | |
77 | |
78 void View::HandleEvent(const std::string& event) { | |
79 DCHECK(ready_); | |
80 view_model_->OnEvent(event); | |
81 } | |
82 | |
83 void View::AddChild(View* child) { | |
84 DCHECK(children_.find(child->id()) == children_.end()); | |
85 DCHECK(!child->id().empty()); | |
86 children_.set(child->id(), make_scoped_ptr(child)); | |
87 child->set_parent(this); | |
88 } | |
89 | |
90 void View::OnChildReady(View* child) { | |
91 ++ready_children_; | |
92 if (ready_children_ == static_cast<int>(children_.size())) | |
93 OnChildrenReady(); | |
94 } | |
95 | |
96 void View::OnChildrenReady() { | |
97 view_model_->OnChildrenReady(); | |
98 if (view_model_ready_) | |
99 OnReady(); | |
100 } | |
101 | |
102 } // namespace webui_generator | |
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