src/ui/views/focus/focus_manager_factory.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/views/focus/focus_manager_factory.h"
   6
   7 #include "base/compiler_specific.h"
   8 #include "ui/views/focus/focus_manager.h"
   9
  10 namespace views {
  11
  12 namespace {
  13
  14 class DefaultFocusManagerFactory : public FocusManagerFactory {
  15  public:
  16   DefaultFocusManagerFactory() : FocusManagerFactory() {}
  17   virtual ~DefaultFocusManagerFactory() {}
  18
  19  protected:
  20   virtual FocusManager* CreateFocusManager(Widget* widget,
  21                                            bool desktop_widget) OVERRIDE {
  22     return new FocusManager(widget, NULL /* delegate */);
  23   }
  24
  25  private:
  26   DISALLOW_COPY_AND_ASSIGN(DefaultFocusManagerFactory);
  27 };
  28
  29 FocusManagerFactory* focus_manager_factory = NULL;
  30
  31 }  // namespace
  32
  33 FocusManagerFactory::FocusManagerFactory() {
  34 }
  35
  36 FocusManagerFactory::~FocusManagerFactory() {
  37 }
  38
  39 // static
  40 FocusManager* FocusManagerFactory::Create(Widget* widget,
  41                                           bool desktop_widget) {
  42   if (!focus_manager_factory)
  43     focus_manager_factory = new DefaultFocusManagerFactory();
  44   return focus_manager_factory->CreateFocusManager(widget, desktop_widget);
  45 }
  46
  47 // static
  48 void FocusManagerFactory::Install(FocusManagerFactory* f) {
  49   if (f == focus_manager_factory)
  50     return;
  51   delete focus_manager_factory;
  52   focus_manager_factory = f ? f : new DefaultFocusManagerFactory();
  53 }
  54
  55 }  // namespace views