athena/activity/activity_view_manager_impl.cc

   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 #include "athena/activity/public/activity_view_manager.h"
   6
   7 #include <algorithm>
   8 #include <map>
   9
  10 #include "athena/activity/activity_widget_delegate.h"
  11 #include "athena/activity/public/activity.h"
  12 #include "athena/activity/public/activity_manager.h"
  13 #include "athena/activity/public/activity_view_model.h"
  14 #include "athena/screen/public/screen_manager.h"
  15 #include "ui/aura/window.h"
  16 #include "ui/views/view.h"
  17 #include "ui/views/widget/widget.h"
  18 #include "ui/views/widget/widget_observer.h"
  19
  20 namespace athena {
  21 namespace {
  22
  23 typedef std::map<Activity*, views::Widget*> ActivityWidgetMap;
  24
  25 views::Widget* CreateWidget(Activity* activity) {
  26   ActivityViewModel* view_model = activity->GetActivityViewModel();
  27   views::Widget* widget = new views::Widget;
  28   views::Widget::InitParams params(views::Widget::InitParams::TYPE_WINDOW);
  29   params.delegate = new ActivityWidgetDelegate(view_model);
  30   params.activatable = views::Widget::InitParams::ACTIVATABLE_YES;
  31   widget->Init(params);
  32   activity->GetActivityViewModel()->Init();
  33   return widget;
  34 }
  35
  36 ActivityViewManager* instance = NULL;
  37
  38 class ActivityViewManagerImpl : public ActivityViewManager,
  39                                 public views::WidgetObserver {
  40  public:
  41   ActivityViewManagerImpl() {
  42     CHECK(!instance);
  43     instance = this;
  44   }
  45
  46   virtual ~ActivityViewManagerImpl() {
  47     CHECK_EQ(this, instance);
  48     instance = NULL;
  49   }
  50
  51   // ActivityViewManager:
  52   virtual void AddActivity(Activity* activity) OVERRIDE {
  53     CHECK(activity_widgets_.end() == activity_widgets_.find(activity));
  54     views::Widget* container = CreateWidget(activity);
  55     container->AddObserver(this);
  56     activity_widgets_[activity] = container;
  57     container->UpdateWindowTitle();
  58     container->Show();
  59     container->Activate();
  60   }
  61
  62   virtual void RemoveActivity(Activity* activity) OVERRIDE {
  63     ActivityWidgetMap::iterator find = activity_widgets_.find(activity);
  64     if (find != activity_widgets_.end()) {
  65       views::Widget* widget = find->second;
  66       widget->RemoveObserver(this);
  67       widget->Close();
  68       activity_widgets_.erase(activity);
  69     }
  70   }
  71
  72   virtual void UpdateActivity(Activity* activity) OVERRIDE {
  73     ActivityWidgetMap::iterator find = activity_widgets_.find(activity);
  74     if (find != activity_widgets_.end())
  75       find->second->UpdateWindowTitle();
  76   }
  77
  78   // views::WidgetObserver:
  79   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE {
  80     for (ActivityWidgetMap::iterator iter = activity_widgets_.begin();
  81          iter != activity_widgets_.end();
  82          ++iter) {
  83       if (iter->second == widget) {
  84         delete iter->first;
  85         break;
  86       }
  87     }
  88   }
  89
  90  private:
  91   ActivityWidgetMap activity_widgets_;
  92
  93   DISALLOW_COPY_AND_ASSIGN(ActivityViewManagerImpl);
  94 };
  95
  96 }  // namespace
  97
  98 // static
  99 ActivityViewManager* ActivityViewManager::Create() {
 100   new ActivityViewManagerImpl();
 101   CHECK(instance);
 102   return instance;
 103 }
 104
 105 ActivityViewManager* ActivityViewManager::Get() {
 106   return instance;
 107 }
 108
 109 void ActivityViewManager::Shutdown() {
 110   CHECK(instance);
 111   delete instance;
 112 }
 113
 114 }  // namespace athena