mojo/examples/nesting_app/nesting_app.cc

   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/message_loop/message_loop.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "mojo/examples/window_manager/window_manager.mojom.h"
  10 #include "mojo/public/cpp/application/application_connection.h"
  11 #include "mojo/public/cpp/application/application_delegate.h"
  12 #include "mojo/services/public/cpp/view_manager/node.h"
  13 #include "mojo/services/public/cpp/view_manager/node_observer.h"
  14 #include "mojo/services/public/cpp/view_manager/view.h"
  15 #include "mojo/services/public/cpp/view_manager/view_manager.h"
  16 #include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
  17 #include "mojo/services/public/cpp/view_manager/view_observer.h"
  18 #include "mojo/services/public/interfaces/navigation/navigation.mojom.h"
  19 #include "ui/events/event_constants.h"
  20 #include "url/gurl.h"
  21
  22 using mojo::view_manager::Node;
  23 using mojo::view_manager::NodeObserver;
  24 using mojo::view_manager::View;
  25 using mojo::view_manager::ViewManager;
  26 using mojo::view_manager::ViewManagerDelegate;
  27 using mojo::view_manager::ViewObserver;
  28
  29 namespace mojo {
  30 namespace examples {
  31
  32 namespace {
  33 const char kEmbeddedAppURL[] = "mojo:mojo_embedded_app";
  34 }
  35
  36 // An app that embeds another app.
  37 // TODO(davemoore): Is this the right name?
  38 class NestingApp : public ApplicationDelegate,
  39                    public ViewManagerDelegate,
  40                    public ViewObserver,
  41                    public NodeObserver {
  42  public:
  43   NestingApp() : nested_(NULL) {}
  44   virtual ~NestingApp() {}
  45
  46  private:
  47   class Navigator : public InterfaceImpl<navigation::Navigator> {
  48    public:
  49     explicit Navigator(ApplicationConnection* connection,
  50                        NestingApp* app) : app_(app) {}
  51    private:
  52     virtual void Navigate(
  53         uint32 node_id,
  54         navigation::NavigationDetailsPtr navigation_details,
  55         navigation::ResponseDetailsPtr response_details) OVERRIDE {
  56       GURL url(navigation_details->url.To<std::string>());
  57       if (!url.is_valid()) {
  58         LOG(ERROR) << "URL is invalid.";
  59         return;
  60       }
  61       app_->color_ = url.path().substr(1);
  62       app_->NavigateChild();
  63     }
  64     NestingApp* app_;
  65     DISALLOW_COPY_AND_ASSIGN(Navigator);
  66   };
  67
  68   // Overridden from ApplicationImpl:
  69   virtual bool ConfigureIncomingConnection(ApplicationConnection* connection)
  70       MOJO_OVERRIDE {
  71     ViewManager::ConfigureIncomingConnection(connection, this);
  72     connection->ConnectToService(&window_manager_);
  73     connection->AddService<Navigator>(this);
  74     // TODO(davemoore): Is this ok?
  75     if (!navigator_.get()) {
  76       connection->ConnectToApplication(
  77           kEmbeddedAppURL)->ConnectToService(&navigator_);
  78     }
  79     return true;
  80   }
  81
  82   // Overridden from ViewManagerDelegate:
  83   virtual void OnRootAdded(ViewManager* view_manager, Node* root) OVERRIDE {
  84     root->AddObserver(this);
  85
  86     View* view = View::Create(view_manager);
  87     root->SetActiveView(view);
  88     view->SetColor(SK_ColorCYAN);
  89     view->AddObserver(this);
  90
  91     nested_ = Node::Create(view_manager);
  92     root->AddChild(nested_);
  93     nested_->SetBounds(gfx::Rect(20, 20, 50, 50));
  94     nested_->Embed(kEmbeddedAppURL);
  95
  96     NavigateChild();
  97   }
  98   virtual void OnViewManagerDisconnected(ViewManager* view_manager) OVERRIDE {
  99     base::MessageLoop::current()->Quit();
 100   }
 101
 102   // Overridden from ViewObserver:
 103   virtual void OnViewInputEvent(View* view, const EventPtr& event) OVERRIDE {
 104     if (event->action == ui::ET_MOUSE_RELEASED)
 105       window_manager_->CloseWindow(view->node()->id());
 106   }
 107
 108   // Overridden from NodeObserver:
 109   virtual void OnNodeDestroyed(Node* node) OVERRIDE {
 110     // TODO(beng): reap views & child nodes.
 111     nested_ = NULL;
 112   }
 113
 114   void NavigateChild() {
 115     if (!color_.empty() && nested_) {
 116       navigation::NavigationDetailsPtr details(
 117           navigation::NavigationDetails::New());
 118       details->url =
 119           base::StringPrintf("%s/%s", kEmbeddedAppURL, color_.c_str());
 120       navigation::ResponseDetailsPtr response_details(
 121           navigation::ResponseDetails::New());
 122       navigator_->Navigate(nested_->id(),
 123                            details.Pass(),
 124                            response_details.Pass());
 125     }
 126   }
 127
 128   std::string color_;
 129   Node* nested_;
 130   navigation::NavigatorPtr navigator_;
 131   IWindowManagerPtr window_manager_;
 132
 133   DISALLOW_COPY_AND_ASSIGN(NestingApp);
 134 };
 135
 136 }  // namespace examples
 137
 138 // static
 139 ApplicationDelegate* ApplicationDelegate::Create() {
 140   return new examples::NestingApp;
 141 }
 142
 143 }  // namespace mojo