View synchronization

mojo/services/public/cpp/view_manager/view_manager.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_H_
 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "mojo/public/cpp/bindings/callback.h"
 #include "mojo/services/public/cpp/view_manager/view_tree_node.h"
 
 namespace mojo {
 class Shell;
 namespace services {
 namespace view_manager {
 
+class View;
 class ViewManagerSynchronizer;
 class ViewTreeNode;
 
 // Approximately encapsulates the View Manager service.
 // Owns a synchronizer that keeps a client model in sync with the service.
 // Owned by the creator.
 //
 // TODO: displays
 class ViewManager {
  public:
   explicit ViewManager(Shell* shell);
   ~ViewManager();
 
   // Connects to the View Manager service. This method must be called before
   // using any other View Manager lib class or function.
   // Blocks on establishing the connection and subsequently receiving a node
   // tree from the service.
   // TODO(beng): blocking is currently achieved by running a nested runloop,
   //             which will dispatch all messages on all pipes while blocking.
   //             we should instead wait on the client pipe receiving a
   //             connection established message.
   // TODO(beng): this method could optionally not block if supplied a callback.
   void Init();
 
   ViewTreeNode* tree() { return tree_; }
 
   ViewTreeNode* GetNodeById(TransportNodeId id);
+  View* GetViewById(TransportViewId id);
 
  private:
   friend class ViewManagerPrivate;
   typedef std::map<TransportNodeId, ViewTreeNode*> IdToNodeMap;
+  typedef std::map<TransportViewId, View*> IdToViewMap;
 
   Shell* shell_;
   scoped_ptr<ViewManagerSynchronizer> synchronizer_;
   ViewTreeNode* tree_;
 
   IdToNodeMap nodes_;
+  IdToViewMap views_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewManager);
 };
 
 }  // namespace view_manager
 }  // namespace services
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_MANAGER_H_