chrome/browser/ui/app_list/app_list_shower_views.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 "chrome/browser/ui/app_list/app_list_shower_views.h"
   6
   7 #include "base/bind.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/profiler/scoped_tracker.h"
  10 #include "chrome/browser/apps/scoped_keep_alive.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/ui/app_list/app_list_shower_delegate.h"
  13 #include "chrome/browser/ui/app_list/app_list_view_delegate.h"
  14 #include "ui/app_list/views/app_list_view.h"
  15 #include "ui/gfx/geometry/point.h"
  16 #include "ui/gfx/screen.h"
  17
  18 AppListShower::AppListShower(AppListShowerDelegate* delegate)
  19     : delegate_(delegate),
  20       profile_(NULL),
  21       app_list_(NULL),
  22       window_icon_updated_(false) {
  23 }
  24
  25 AppListShower::~AppListShower() {
  26 }
  27
  28 void AppListShower::ShowForCurrentProfile() {
  29   DCHECK(HasView());
  30   keep_alive_.reset(new ScopedKeepAlive);
  31
  32   // If the app list is already displaying |profile| just activate it (in case
  33   // we have lost focus).
  34   if (!IsAppListVisible())
  35     delegate_->MoveNearCursor(app_list_);
  36
  37   Show();
  38 }
  39
  40 gfx::NativeWindow AppListShower::GetWindow() {
  41   if (!IsAppListVisible())
  42     return NULL;
  43   return app_list_->GetWidget()->GetNativeWindow();
  44 }
  45
  46 void AppListShower::CreateViewForProfile(Profile* requested_profile) {
  47   DCHECK(requested_profile);
  48   if (HasView() && requested_profile->IsSameProfile(profile_))
  49     return;
  50
  51   profile_ = requested_profile->GetOriginalProfile();
  52   if (HasView()) {
  53     // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
  54     tracked_objects::ScopedTracker tracking_profile1(
  55         FROM_HERE_WITH_EXPLICIT_FUNCTION(
  56             "431326 AppListShower::CreateViewForProfile1"));
  57
  58     UpdateViewForNewProfile();
  59     return;
  60   }
  61   // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
  62   tracked_objects::ScopedTracker tracking_profile2(
  63       FROM_HERE_WITH_EXPLICIT_FUNCTION(
  64           "431326 AppListShower::CreateViewForProfile2"));
  65
  66   app_list_ = MakeViewForCurrentProfile();
  67
  68   // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
  69   tracked_objects::ScopedTracker tracking_profile3(
  70       FROM_HERE_WITH_EXPLICIT_FUNCTION(
  71           "431326 AppListShower::CreateViewForProfile3"));
  72
  73   delegate_->OnViewCreated();
  74 }
  75
  76 void AppListShower::DismissAppList() {
  77   if (HasView()) {
  78     Hide();
  79     delegate_->OnViewDismissed();
  80     // This can be reached by pressing the dismiss accelerator. To prevent
  81     // events from being processed with a destroyed dispatcher, delay the reset
  82     // of the keep alive.
  83     ResetKeepAliveSoon();
  84   }
  85 }
  86
  87 void AppListShower::HandleViewBeingDestroyed() {
  88   app_list_ = NULL;
  89   profile_ = NULL;
  90
  91   // We may end up here as the result of the OS deleting the AppList's
  92   // widget (WidgetObserver::OnWidgetDestroyed). If this happens and there
  93   // are no browsers around then deleting the keep alive will result in
  94   // deleting the Widget again (by way of CloseAllSecondaryWidgets). When
  95   // the stack unravels we end up back in the Widget that was deleted and
  96   // crash. By delaying deletion of the keep alive we ensure the Widget has
  97   // correctly been destroyed before ending the keep alive so that
  98   // CloseAllSecondaryWidgets() won't attempt to delete the AppList's Widget
  99   // again.
 100   ResetKeepAliveSoon();
 101 }
 102
 103 bool AppListShower::IsAppListVisible() const {
 104   return app_list_ && app_list_->GetWidget()->IsVisible();
 105 }
 106
 107 void AppListShower::WarmupForProfile(Profile* profile) {
 108   DCHECK(!profile_);
 109   CreateViewForProfile(profile);
 110   app_list_->Prerender();
 111 }
 112
 113 bool AppListShower::HasView() const {
 114   return !!app_list_;
 115 }
 116
 117 app_list::AppListView* AppListShower::MakeViewForCurrentProfile() {
 118   // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
 119   tracked_objects::ScopedTracker tracking_profile1(
 120       FROM_HERE_WITH_EXPLICIT_FUNCTION(
 121           "431326 AppListShower::MakeViewForCurrentProfile1"));
 122
 123   // The app list view manages its own lifetime.
 124   app_list::AppListView* view =
 125       new app_list::AppListView(delegate_->GetViewDelegateForCreate());
 126
 127   // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
 128   tracked_objects::ScopedTracker tracking_profile2(
 129       FROM_HERE_WITH_EXPLICIT_FUNCTION(
 130           "431326 AppListShower::MakeViewForCurrentProfile2"));
 131
 132   gfx::Point cursor = gfx::Screen::GetNativeScreen()->GetCursorScreenPoint();
 133
 134   // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
 135   tracked_objects::ScopedTracker tracking_profile3(
 136       FROM_HERE_WITH_EXPLICIT_FUNCTION(
 137           "431326 AppListShower::MakeViewForCurrentProfile3"));
 138
 139   view->InitAsBubbleAtFixedLocation(NULL,
 140                                     0,
 141                                     cursor,
 142                                     views::BubbleBorder::FLOAT,
 143                                     false /* border_accepts_events */);
 144   return view;
 145 }
 146
 147 void AppListShower::UpdateViewForNewProfile() {
 148   app_list_->SetProfileByPath(profile_->GetPath());
 149 }
 150
 151 void AppListShower::Show() {
 152   app_list_->GetWidget()->Show();
 153   if (!window_icon_updated_) {
 154     app_list_->GetWidget()->GetTopLevelWidget()->UpdateWindowIcon();
 155     window_icon_updated_ = true;
 156   }
 157   app_list_->GetWidget()->Activate();
 158 }
 159
 160 void AppListShower::Hide() {
 161   app_list_->GetWidget()->Hide();
 162 }
 163
 164 void AppListShower::ResetKeepAliveSoon() {
 165   if (base::MessageLoop::current()) {  // NULL in tests.
 166     base::MessageLoop::current()->PostTask(
 167         FROM_HERE,
 168         base::Bind(&AppListShower::ResetKeepAlive, base::Unretained(this)));
 169     return;
 170   }
 171   ResetKeepAlive();
 172 }
 173
 174 void AppListShower::ResetKeepAlive() {
 175   keep_alive_.reset();
 176 }