ui/aura/client/visibility_client.cc

   1 // Copyright (c) 2012 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 "ui/aura/client/visibility_client.h"
   6
   7 #include "ui/aura/window_event_dispatcher.h"
   8 #include "ui/aura/window_property.h"
   9
  10 DECLARE_WINDOW_PROPERTY_TYPE(aura::client::VisibilityClient*)
  11
  12 namespace aura {
  13 namespace client {
  14
  15 // A property key to store a client that handles window visibility changes.
  16 DEFINE_LOCAL_WINDOW_PROPERTY_KEY(
  17     VisibilityClient*, kWindowVisibilityClientKey, NULL);
  18
  19
  20 void SetVisibilityClient(Window* window, VisibilityClient* client) {
  21   window->SetProperty(kWindowVisibilityClientKey, client);
  22 }
  23
  24 VisibilityClient* GetVisibilityClient(Window* window) {
  25   VisibilityClient* visibility_client = NULL;
  26   aura::Window* current = window;
  27   do {
  28     visibility_client = current->GetProperty(kWindowVisibilityClientKey);
  29     current = current->parent();
  30   } while (current && !visibility_client);
  31   return visibility_client;
  32 }
  33
  34 }  // namespace client
  35 }  // namespace aura