ui/app_list/views/apps_container_view.cc

   1 // Copyright 2013 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/app_list/views/apps_container_view.h"
   6
   7 #include <algorithm>
   8 #include <vector>
   9
  10 #include "base/command_line.h"
  11 #include "ui/app_list/app_list_constants.h"
  12 #include "ui/app_list/app_list_folder_item.h"
  13 #include "ui/app_list/app_list_switches.h"
  14 #include "ui/app_list/views/app_list_folder_view.h"
  15 #include "ui/app_list/views/app_list_item_view.h"
  16 #include "ui/app_list/views/app_list_main_view.h"
  17 #include "ui/app_list/views/apps_grid_view.h"
  18 #include "ui/app_list/views/folder_background_view.h"
  19 #include "ui/events/event.h"
  20
  21 namespace app_list {
  22
  23 AppsContainerView::AppsContainerView(AppListMainView* app_list_main_view,
  24                                      AppListModel* model)
  25     : model_(model),
  26       show_state_(SHOW_NONE),
  27       top_icon_animation_pending_count_(0) {
  28   apps_grid_view_ = new AppsGridView(app_list_main_view);
  29   int cols;
  30   int rows;
  31   if (switches::IsExperimentalAppListEnabled()) {
  32     cols = kExperimentalPreferredCols;
  33     rows = kExperimentalPreferredRows;
  34   } else if (app_list_main_view->ShouldCenterWindow()) {
  35     cols = kCenteredPreferredCols;
  36     rows = kCenteredPreferredRows;
  37   } else {
  38     cols = kPreferredCols;
  39     rows = kPreferredRows;
  40   }
  41   apps_grid_view_->SetLayout(cols, rows);
  42   AddChildView(apps_grid_view_);
  43
  44   folder_background_view_ = new FolderBackgroundView();
  45   AddChildView(folder_background_view_);
  46
  47   app_list_folder_view_ =
  48       new AppListFolderView(this, model, app_list_main_view);
  49   // The folder view is initially hidden.
  50   app_list_folder_view_->SetVisible(false);
  51   AddChildView(app_list_folder_view_);
  52
  53   apps_grid_view_->SetModel(model_);
  54   apps_grid_view_->SetItemList(model_->top_level_item_list());
  55   SetShowState(SHOW_APPS, false);
  56 }
  57
  58 AppsContainerView::~AppsContainerView() {
  59 }
  60
  61 void AppsContainerView::ShowActiveFolder(AppListFolderItem* folder_item) {
  62   // Prevent new animations from starting if there are currently animations
  63   // pending. This fixes crbug.com/357099.
  64   if (top_icon_animation_pending_count_)
  65     return;
  66
  67   app_list_folder_view_->SetAppListFolderItem(folder_item);
  68   SetShowState(SHOW_ACTIVE_FOLDER, false);
  69
  70   CreateViewsForFolderTopItemsAnimation(folder_item, true);
  71
  72   apps_grid_view_->ClearAnySelectedView();
  73 }
  74
  75 void AppsContainerView::ShowApps(AppListFolderItem* folder_item) {
  76   if (top_icon_animation_pending_count_)
  77     return;
  78
  79   PrepareToShowApps(folder_item);
  80   SetShowState(SHOW_APPS, true);
  81 }
  82
  83 void AppsContainerView::ResetForShowApps() {
  84   SetShowState(SHOW_APPS, false);
  85   folder_background_view_->UpdateFolderContainerBubble(
  86       FolderBackgroundView::NO_BUBBLE);
  87 }
  88
  89 void AppsContainerView::SetDragAndDropHostOfCurrentAppList(
  90     ApplicationDragAndDropHost* drag_and_drop_host) {
  91   apps_grid_view()->SetDragAndDropHostOfCurrentAppList(drag_and_drop_host);
  92   app_list_folder_view()->items_grid_view()->
  93       SetDragAndDropHostOfCurrentAppList(drag_and_drop_host);
  94 }
  95
  96 void AppsContainerView::ReparentFolderItemTransit(
  97     AppListFolderItem* folder_item) {
  98   if (top_icon_animation_pending_count_)
  99     return;
 100
 101   PrepareToShowApps(folder_item);
 102   SetShowState(SHOW_ITEM_REPARENT, false);
 103 }
 104
 105 bool AppsContainerView::IsInFolderView() const {
 106   return show_state_ == SHOW_ACTIVE_FOLDER;
 107 }
 108
 109 void AppsContainerView::ReparentDragEnded() {
 110   DCHECK_EQ(SHOW_ITEM_REPARENT, show_state_);
 111   show_state_ = AppsContainerView::SHOW_APPS;
 112 }
 113
 114 gfx::Size AppsContainerView::GetPreferredSize() const {
 115   const gfx::Size grid_size = apps_grid_view_->GetPreferredSize();
 116   const gfx::Size folder_view_size = app_list_folder_view_->GetPreferredSize();
 117
 118   int width = std::max(grid_size.width(), folder_view_size.width());
 119   int height = std::max(grid_size.height(), folder_view_size.height());
 120   return gfx::Size(width, height);
 121 }
 122
 123 void AppsContainerView::Layout() {
 124   gfx::Rect rect(GetContentsBounds());
 125   if (rect.IsEmpty())
 126     return;
 127
 128   switch (show_state_) {
 129     case SHOW_APPS:
 130       apps_grid_view_->SetBoundsRect(rect);
 131       break;
 132     case SHOW_ACTIVE_FOLDER:
 133       folder_background_view_->SetBoundsRect(rect);
 134       app_list_folder_view_->SetBoundsRect(rect);
 135       break;
 136     case SHOW_ITEM_REPARENT:
 137       break;
 138     default:
 139       NOTREACHED();
 140   }
 141 }
 142
 143 bool AppsContainerView::OnKeyPressed(const ui::KeyEvent& event) {
 144   if (show_state_ == SHOW_APPS)
 145     return apps_grid_view_->OnKeyPressed(event);
 146   else
 147     return app_list_folder_view_->OnKeyPressed(event);
 148 }
 149
 150 void AppsContainerView::OnWillBeShown() {
 151   apps_grid_view()->ClearAnySelectedView();
 152   app_list_folder_view()->items_grid_view()->ClearAnySelectedView();
 153 }
 154
 155 gfx::Rect AppsContainerView::GetPageBoundsForState(
 156     AppListModel::State state) const {
 157   gfx::Rect onscreen_bounds = GetDefaultContentsBounds();
 158   if (state == AppListModel::STATE_APPS)
 159     return onscreen_bounds;
 160
 161   return GetBelowContentsOffscreenBounds(onscreen_bounds.size());
 162 }
 163
 164 void AppsContainerView::OnTopIconAnimationsComplete() {
 165   --top_icon_animation_pending_count_;
 166
 167   if (!top_icon_animation_pending_count_) {
 168     // Clean up the transitional views used for top item icon animation.
 169     top_icon_views_.clear();
 170
 171     // Show the folder icon when closing the folder.
 172     if ((show_state_ == SHOW_APPS || show_state_ == SHOW_ITEM_REPARENT) &&
 173         apps_grid_view_->activated_folder_item_view()) {
 174       apps_grid_view_->activated_folder_item_view()->SetVisible(true);
 175     }
 176   }
 177 }
 178
 179 void AppsContainerView::SetShowState(ShowState show_state,
 180                                      bool show_apps_with_animation) {
 181   if (show_state_ == show_state)
 182     return;
 183
 184   show_state_ = show_state;
 185
 186   switch (show_state_) {
 187     case SHOW_APPS:
 188       folder_background_view_->SetVisible(false);
 189       if (show_apps_with_animation) {
 190         app_list_folder_view_->ScheduleShowHideAnimation(false, false);
 191         apps_grid_view_->ScheduleShowHideAnimation(true);
 192       } else {
 193         app_list_folder_view_->HideViewImmediately();
 194         apps_grid_view_->ResetForShowApps();
 195       }
 196       break;
 197     case SHOW_ACTIVE_FOLDER:
 198       folder_background_view_->SetVisible(true);
 199       apps_grid_view_->ScheduleShowHideAnimation(false);
 200       app_list_folder_view_->ScheduleShowHideAnimation(true, false);
 201       break;
 202     case SHOW_ITEM_REPARENT:
 203       folder_background_view_->SetVisible(false);
 204       folder_background_view_->UpdateFolderContainerBubble(
 205           FolderBackgroundView::NO_BUBBLE);
 206       app_list_folder_view_->ScheduleShowHideAnimation(false, true);
 207       apps_grid_view_->ScheduleShowHideAnimation(true);
 208       break;
 209     default:
 210       NOTREACHED();
 211   }
 212
 213   app_list_folder_view_->SetBackButtonLabel(IsInFolderView());
 214   Layout();
 215 }
 216
 217 std::vector<gfx::Rect> AppsContainerView::GetTopItemIconBoundsInActiveFolder() {
 218   // Get the active folder's icon bounds relative to AppsContainerView.
 219   AppListItemView* folder_item_view =
 220       apps_grid_view_->activated_folder_item_view();
 221   gfx::Rect to_grid_view = folder_item_view->ConvertRectToParent(
 222       folder_item_view->GetIconBounds());
 223   gfx::Rect to_container = apps_grid_view_->ConvertRectToParent(to_grid_view);
 224
 225   return FolderImage::GetTopIconsBounds(to_container);
 226 }
 227
 228 void AppsContainerView::CreateViewsForFolderTopItemsAnimation(
 229     AppListFolderItem* active_folder,
 230     bool open_folder) {
 231   top_icon_views_.clear();
 232   std::vector<gfx::Rect> top_items_bounds =
 233       GetTopItemIconBoundsInActiveFolder();
 234   top_icon_animation_pending_count_ =
 235       std::min(kNumFolderTopItems, active_folder->item_list()->item_count());
 236   for (size_t i = 0; i < top_icon_animation_pending_count_; ++i) {
 237     if (active_folder->GetTopIcon(i).isNull())
 238       continue;
 239
 240     TopIconAnimationView* icon_view = new TopIconAnimationView(
 241         active_folder->GetTopIcon(i), top_items_bounds[i], open_folder);
 242     icon_view->AddObserver(this);
 243     top_icon_views_.push_back(icon_view);
 244
 245     // Add the transitional views into child views, and set its bounds to the
 246     // same location of the item in the folder list view.
 247     AddChildView(top_icon_views_[i]);
 248     top_icon_views_[i]->SetBoundsRect(
 249         app_list_folder_view_->ConvertRectToParent(
 250             app_list_folder_view_->GetItemIconBoundsAt(i)));
 251     static_cast<TopIconAnimationView*>(top_icon_views_[i])->TransformView();
 252   }
 253 }
 254
 255 void AppsContainerView::PrepareToShowApps(AppListFolderItem* folder_item) {
 256   if (folder_item)
 257     CreateViewsForFolderTopItemsAnimation(folder_item, false);
 258
 259   // Hide the active folder item until the animation completes.
 260   if (apps_grid_view_->activated_folder_item_view())
 261     apps_grid_view_->activated_folder_item_view()->SetVisible(false);
 262 }
 263
 264 }  // namespace app_list