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 #ifndef MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_DELEGATE_H_ 6 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_DELEGATE_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "mojo/public/interfaces/application/service_provider.mojom.h" 10 11 namespace mojo { 12 13 class ServiceProviderImpl; 14 class View; 15 class ViewManager; 16 17 // Interface implemented by an application using the view manager. 18 class ViewManagerDelegate { 19 public: 20 // Called when the application implementing this interface is embedded at 21 // |root|. |view_manager| is an implementation of an object bound to a 22 // connection to the view manager service. The object is valid until 23 // OnViewManagerDisconnected() is called with the same object. 24 // This function is called for every embed, but there will be a unique 25 // instance of |view_manager| only for every unique connection. See 26 // the class description of ViewManager for some rules about when a new 27 // connection is made. 28 // |exported_services| is an object that the delegate can add services to to 29 // expose to the embedder. |imported_services| exposes the services offered by 30 // the embedder to the delegate. Note that if a different application is 31 // subsequently embedded at |root|, the pipe(s) connecting |imported_services| 32 // to the embedder and any services obtained from it are not broken and will 33 // continue to be valid. 34 virtual void OnEmbed(ViewManager* view_manager, 35 View* root, 36 ServiceProviderImpl* exported_services, 37 scoped_ptr<ServiceProvider> imported_services) = 0; 38 39 // Called when a connection to the view manager service is closed. 40 // |view_manager| is not valid after this function returns. 41 virtual void OnViewManagerDisconnected(ViewManager* view_manager) = 0; 42 43 protected: 44 virtual ~ViewManagerDelegate() {} 45 }; 46 47 } // namespace mojo 48 49 #endif // MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_DELEGATE_H_ 50
