components/view_manager/public/cpp/view_manager.h

   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 COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_VIEW_MANAGER_H_
   6 #define COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_VIEW_MANAGER_H_
   7
   8 #include <string>
   9
  10 #include "components/view_manager/public/cpp/types.h"
  11
  12 namespace mojo {
  13 class View;
  14
  15 // Encapsulates a connection to the view manager service. A unique connection
  16 // is made every time an app is embedded.
  17 class ViewManager {
  18  public:
  19   virtual ~ViewManager() {}
  20
  21   // Returns the root of this connection.
  22   virtual View* GetRoot() = 0;
  23
  24   // Returns a View known to this connection.
  25   virtual View* GetViewById(Id id) = 0;
  26
  27   // Returns the focused view; null if focus is not yet known or another app is
  28   // focused.
  29   virtual View* GetFocusedView() = 0;
  30
  31   // Creates and returns a new View (which is owned by the ViewManager). Views
  32   // are initially hidden, use SetVisible(true) to show.
  33   virtual View* CreateView() = 0;
  34
  35   // Set view_manager.mojom for details.
  36   virtual void SetEmbedRoot() = 0;
  37 };
  38
  39 }  // namespace mojo
  40
  41 #endif  // COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_VIEW_MANAGER_H_