src/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,
  56                false);  /* show apps without animation */
  57 }
  58
  59 AppsContainerView::~AppsContainerView() {
  60 }
  61
  62 void AppsContainerView::ShowActiveFolder(AppListFolderItem* folder_item) {
  63   // Prevent new animations from starting if there are currently animations
  64   // pending. This fixes crbug.com/357099.
  65   if (top_icon_animation_pending_count_)
  66     return;
  67
  68   app_list_folder_view_->SetAppListFolderItem(folder_item);
  69   SetShowState(SHOW_ACTIVE_FOLDER, false);
  70
  71   CreateViewsForFolderTopItemsAnimation(folder_item, true);
  72 }
  73
  74 void AppsContainerView::ShowApps(AppListFolderItem* folder_item) {
  75   if (top_icon_animation_pending_count_)
  76     return;
  77
  78   PrepareToShowApps(folder_item);
  79   SetShowState(SHOW_APPS,
  80                true);  /* show apps with animation */
  81 }
  82
  83 void AppsContainerView::ResetForShowApps() {
  84   SetShowState(SHOW_APPS, false /* show apps without animation */);
  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 gfx::Size AppsContainerView::GetPreferredSize() const {
 110   const gfx::Size grid_size = apps_grid_view_->GetPreferredSize();
 111   const gfx::Size folder_view_size = app_list_folder_view_->GetPreferredSize();
 112
 113   int width = std::max(grid_size.width(), folder_view_size.width());
 114   int height = std::max(grid_size.height(), folder_view_size.height());
 115   return gfx::Size(width, height);
 116 }
 117
 118 void AppsContainerView::Layout() {
 119   gfx::Rect rect(GetContentsBounds());
 120   if (rect.IsEmpty())
 121     return;
 122
 123   switch (show_state_) {
 124     case SHOW_APPS:
 125       apps_grid_view_->SetBoundsRect(rect);
 126       break;
 127     case SHOW_ACTIVE_FOLDER:
 128       folder_background_view_->SetBoundsRect(rect);
 129       app_list_folder_view_->SetBoundsRect(rect);
 130       break;
 131     case SHOW_ITEM_REPARENT:
 132       break;
 133     default:
 134       NOTREACHED();
 135   }
 136 }
 137
 138 bool AppsContainerView::OnKeyPressed(const ui::KeyEvent& event) {
 139   if (show_state_ == SHOW_APPS)
 140     return apps_grid_view_->OnKeyPressed(event);
 141   else
 142     return app_list_folder_view_->OnKeyPressed(event);
 143 }
 144
 145 void AppsContainerView::OnTopIconAnimationsComplete() {
 146   --top_icon_animation_pending_count_;
 147
 148   if (!top_icon_animation_pending_count_) {
 149     // Clean up the transitional views used for top item icon animation.
 150     top_icon_views_.clear();
 151
 152     // Show the folder icon when closing the folder.
 153     if ((show_state_ == SHOW_APPS || show_state_ == SHOW_ITEM_REPARENT) &&
 154         apps_grid_view_->activated_folder_item_view()) {
 155       apps_grid_view_->activated_folder_item_view()->SetVisible(true);
 156     }
 157   }
 158 }
 159
 160 void AppsContainerView::SetShowState(ShowState show_state,
 161                                      bool show_apps_with_animation) {
 162   if (show_state_ == show_state)
 163     return;
 164
 165   show_state_ = show_state;
 166
 167   switch (show_state_) {
 168     case SHOW_APPS:
 169       folder_background_view_->SetVisible(false);
 170       if (show_apps_with_animation) {
 171         app_list_folder_view_->ScheduleShowHideAnimation(false, false);
 172         apps_grid_view_->ScheduleShowHideAnimation(true);
 173       } else {
 174         app_list_folder_view_->HideViewImmediately();
 175         apps_grid_view_->ResetForShowApps();
 176       }
 177       break;
 178     case SHOW_ACTIVE_FOLDER:
 179       folder_background_view_->SetVisible(true);
 180       apps_grid_view_->ScheduleShowHideAnimation(false);
 181       app_list_folder_view_->ScheduleShowHideAnimation(true, false);
 182       break;
 183     case SHOW_ITEM_REPARENT:
 184       folder_background_view_->SetVisible(false);
 185       folder_background_view_->UpdateFolderContainerBubble(
 186           FolderBackgroundView::NO_BUBBLE);
 187       app_list_folder_view_->ScheduleShowHideAnimation(false, true);
 188       apps_grid_view_->ScheduleShowHideAnimation(true);
 189       break;
 190     default:
 191       NOTREACHED();
 192   }
 193
 194   Layout();
 195 }
 196
 197 Rects AppsContainerView::GetTopItemIconBoundsInActiveFolder() {
 198   // Get the active folder's icon bounds relative to AppsContainerView.
 199   AppListItemView* folder_item_view =
 200       apps_grid_view_->activated_folder_item_view();
 201   gfx::Rect to_grid_view = folder_item_view->ConvertRectToParent(
 202       folder_item_view->GetIconBounds());
 203   gfx::Rect to_container = apps_grid_view_->ConvertRectToParent(to_grid_view);
 204
 205   return AppListFolderItem::GetTopIconsBounds(to_container);
 206 }
 207
 208 void AppsContainerView::CreateViewsForFolderTopItemsAnimation(
 209     AppListFolderItem* active_folder,
 210     bool open_folder) {
 211   top_icon_views_.clear();
 212   std::vector<gfx::Rect> top_items_bounds =
 213       GetTopItemIconBoundsInActiveFolder();
 214   top_icon_animation_pending_count_ =
 215       std::min(kNumFolderTopItems, active_folder->item_list()->item_count());
 216   for (size_t i = 0; i < top_icon_animation_pending_count_; ++i) {
 217     if (active_folder->GetTopIcon(i).isNull())
 218       continue;
 219
 220     TopIconAnimationView* icon_view = new TopIconAnimationView(
 221         active_folder->GetTopIcon(i), top_items_bounds[i], open_folder);
 222     icon_view->AddObserver(this);
 223     top_icon_views_.push_back(icon_view);
 224
 225     // Add the transitional views into child views, and set its bounds to the
 226     // same location of the item in the folder list view.
 227     AddChildView(top_icon_views_[i]);
 228     top_icon_views_[i]->SetBoundsRect(
 229         app_list_folder_view_->ConvertRectToParent(
 230             app_list_folder_view_->GetItemIconBoundsAt(i)));
 231     static_cast<TopIconAnimationView*>(top_icon_views_[i])->TransformView();
 232   }
 233 }
 234
 235 void AppsContainerView::PrepareToShowApps(AppListFolderItem* folder_item) {
 236   if (folder_item)
 237     CreateViewsForFolderTopItemsAnimation(folder_item, false);
 238
 239   // Hide the active folder item until the animation completes.
 240   if (apps_grid_view_->activated_folder_item_view())
 241     apps_grid_view_->activated_folder_item_view()->SetVisible(false);
 242 }
 243
 244 }  // namespace app_list