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 "base/basictypes.h"
6 #include "base/bind.h"
7 #include "base/strings/stringprintf.h"
8 #include "mojo/examples/window_manager/window_manager.mojom.h"
9 #include "mojo/public/cpp/application/application.h"
10 #include "mojo/services/public/cpp/view_manager/node.h"
11 #include "mojo/services/public/cpp/view_manager/node_observer.h"
12 #include "mojo/services/public/cpp/view_manager/view.h"
13 #include "mojo/services/public/cpp/view_manager/view_manager.h"
14 #include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
15 #include "mojo/services/public/cpp/view_manager/view_observer.h"
16 #include "mojo/services/public/interfaces/navigation/navigation.mojom.h"
17 #include "ui/events/event_constants.h"
18 #include "url/gurl.h"
19
20 using mojo::view_manager::Node;
21 using mojo::view_manager::NodeObserver;
22 using mojo::view_manager::View;
23 using mojo::view_manager::ViewManager;
24 using mojo::view_manager::ViewManagerDelegate;
25 using mojo::view_manager::ViewObserver;
26
27 namespace mojo {
28 namespace examples {
29
30 namespace {
31 const char kEmbeddedAppURL[] = "mojo:mojo_embedded_app";
32 }
33
34 // An app that embeds another app.
35 class NestingApp : public Application,
36 public ViewManagerDelegate,
37 public ViewObserver,
38 public NodeObserver {
39 public:
NestingApp()40 NestingApp() : nested_(NULL) {}
~NestingApp()41 virtual ~NestingApp() {}
42
43 private:
44 class Navigator : public InterfaceImpl<navigation::Navigator> {
45 public:
Navigator(NestingApp * app)46 explicit Navigator(NestingApp* app) : app_(app) {}
47 private:
Navigate(uint32 node_id,navigation::NavigationDetailsPtr navigation_details,navigation::ResponseDetailsPtr response_details)48 virtual void Navigate(
49 uint32 node_id,
50 navigation::NavigationDetailsPtr navigation_details,
51 navigation::ResponseDetailsPtr response_details) OVERRIDE {
52 GURL url(navigation_details->url.To<std::string>());
53 if (!url.is_valid()) {
54 LOG(ERROR) << "URL is invalid.";
55 return;
56 }
57 app_->color_ = url.path().substr(1);
58 app_->NavigateChild();
59 }
60 NestingApp* app_;
61 DISALLOW_COPY_AND_ASSIGN(Navigator);
62 };
63
64 // Overridden from Application:
Initialize()65 virtual void Initialize() MOJO_OVERRIDE {
66 ViewManager::Create(this, this);
67 ConnectTo<IWindowManager>("mojo:mojo_window_manager", &window_manager_);
68 AddService<Navigator>(this);
69 }
70
71 // Overridden from ViewManagerDelegate:
OnRootAdded(ViewManager * view_manager,Node * root)72 virtual void OnRootAdded(ViewManager* view_manager, Node* root) OVERRIDE {
73 root->AddObserver(this);
74
75 View* view = View::Create(view_manager);
76 root->SetActiveView(view);
77 view->SetColor(SK_ColorCYAN);
78 view->AddObserver(this);
79
80 nested_ = Node::Create(view_manager);
81 root->AddChild(nested_);
82 nested_->SetBounds(gfx::Rect(20, 20, 50, 50));
83 nested_->Embed(kEmbeddedAppURL);
84
85 if (!navigator_.get())
86 ConnectTo(kEmbeddedAppURL, &navigator_);
87
88 NavigateChild();
89 }
90
91 // Overridden from ViewObserver:
OnViewInputEvent(View * view,const EventPtr & event)92 virtual void OnViewInputEvent(View* view, const EventPtr& event) OVERRIDE {
93 if (event->action == ui::ET_MOUSE_RELEASED)
94 window_manager_->CloseWindow(view->node()->id());
95 }
96
97 // Overridden from NodeObserver:
OnNodeDestroy(Node * node,NodeObserver::DispositionChangePhase phase)98 virtual void OnNodeDestroy(
99 Node* node,
100 NodeObserver::DispositionChangePhase phase) OVERRIDE {
101 if (phase != NodeObserver::DISPOSITION_CHANGED)
102 return;
103 // TODO(beng): reap views & child nodes.
104 nested_ = NULL;
105 }
106
NavigateChild()107 void NavigateChild() {
108 if (!color_.empty() && nested_) {
109 navigation::NavigationDetailsPtr details(
110 navigation::NavigationDetails::New());
111 details->url =
112 base::StringPrintf("%s/%s", kEmbeddedAppURL, color_.c_str());
113 navigation::ResponseDetailsPtr response_details(
114 navigation::ResponseDetails::New());
115 navigator_->Navigate(nested_->id(),
116 details.Pass(),
117 response_details.Pass());
118 }
119 }
120
121 std::string color_;
122 Node* nested_;
123 navigation::NavigatorPtr navigator_;
124 IWindowManagerPtr window_manager_;
125
126 DISALLOW_COPY_AND_ASSIGN(NestingApp);
127 };
128
129 } // namespace examples
130
131 // static
Create()132 Application* Application::Create() {
133 return new examples::NestingApp;
134 }
135
136 } // namespace mojo
137