src/ui/app_list/views/app_list_folder_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/app_list_folder_view.h"
   6
   7 #include <algorithm>
   8
   9 #include "ui/app_list/app_list_constants.h"
  10 #include "ui/app_list/app_list_folder_item.h"
  11 #include "ui/app_list/app_list_model.h"
  12 #include "ui/app_list/pagination_model.h"
  13 #include "ui/app_list/views/app_list_item_view.h"
  14 #include "ui/app_list/views/app_list_main_view.h"
  15 #include "ui/app_list/views/apps_container_view.h"
  16 #include "ui/app_list/views/apps_grid_view.h"
  17 #include "ui/app_list/views/contents_view.h"
  18 #include "ui/app_list/views/folder_header_view.h"
  19 #include "ui/compositor/scoped_layer_animation_settings.h"
  20 #include "ui/events/event.h"
  21 #include "ui/views/view_model.h"
  22 #include "ui/views/view_model_utils.h"
  23
  24 namespace app_list {
  25
  26 namespace {
  27
  28 // Indexes of interesting views in ViewModel of AppListFolderView.
  29 const int kIndexFolderHeader = 0;
  30 const int kIndexChildItems = 1;
  31
  32 }  // namespace
  33
  34 AppListFolderView::AppListFolderView(AppsContainerView* container_view,
  35                                      AppListModel* model,
  36                                      AppListMainView* app_list_main_view,
  37                                      content::WebContents* start_page_contents)
  38     : container_view_(container_view),
  39       folder_header_view_(new FolderHeaderView(this)),
  40       view_model_(new views::ViewModel),
  41       folder_item_(NULL),
  42       pagination_model_(new PaginationModel) {
  43   AddChildView(folder_header_view_);
  44   view_model_->Add(folder_header_view_, kIndexFolderHeader);
  45
  46   items_grid_view_ = new AppsGridView(
  47       app_list_main_view, pagination_model_.get(), NULL);
  48   items_grid_view_->set_is_root_level(false);
  49   items_grid_view_->SetLayout(kPreferredIconDimension,
  50                               kPreferredCols,
  51                               kPreferredRows);
  52   items_grid_view_->SetModel(model);
  53   AddChildView(items_grid_view_);
  54   view_model_->Add(items_grid_view_, kIndexChildItems);
  55
  56 #if defined(USE_AURA)
  57   SetPaintToLayer(true);
  58   SetFillsBoundsOpaquely(false);
  59 #endif
  60 }
  61
  62 AppListFolderView::~AppListFolderView() {
  63   // Make sure |items_grid_view_| is deleted before |pagination_model_|.
  64   RemoveAllChildViews(true);
  65 }
  66
  67 void AppListFolderView::SetAppListFolderItem(AppListFolderItem* folder) {
  68   folder_item_ = folder;
  69   items_grid_view_->SetItemList(folder_item_->item_list());
  70   folder_header_view_->SetFolderItem(folder_item_);
  71 }
  72
  73 void AppListFolderView::ScheduleShowHideAnimation(bool show) {
  74   // Stop any previous animation.
  75   layer()->GetAnimator()->StopAnimating();
  76
  77   // Hide the top items temporarily if showing the view for opening the folder.
  78   if (show)
  79     items_grid_view_->SetTopItemViewsVisible(false);
  80
  81   // Set initial state.
  82   SetVisible(true);
  83   layer()->SetOpacity(show ? 0.0f : 1.0f);
  84
  85   ui::ScopedLayerAnimationSettings animation(layer()->GetAnimator());
  86   animation.SetTweenType(gfx::Tween::EASE_IN_2);
  87   animation.AddObserver(this);
  88   animation.SetTransitionDuration(base::TimeDelta::FromMilliseconds(
  89       show ? kFolderTransitionInDurationMs : kFolderTransitionOutDurationMs));
  90
  91   layer()->SetOpacity(show ? 1.0f : 0.0f);
  92 }
  93
  94 gfx::Size AppListFolderView::GetPreferredSize() {
  95   const gfx::Size header_size = folder_header_view_->GetPreferredSize();
  96   const gfx::Size grid_size = items_grid_view_->GetPreferredSize();
  97   int width = std::max(header_size.width(), grid_size.width());
  98   int height = header_size.height() + grid_size.height();
  99   return gfx::Size(width, height);
 100 }
 101
 102 void AppListFolderView::Layout() {
 103   CalculateIdealBounds();
 104   views::ViewModelUtils::SetViewBoundsToIdealBounds(*view_model_);
 105 }
 106
 107 bool AppListFolderView::OnKeyPressed(const ui::KeyEvent& event) {
 108   return items_grid_view_->OnKeyPressed(event);
 109 }
 110
 111 void AppListFolderView::OnImplicitAnimationsCompleted() {
 112   // Show the top items when the opening folder animation is done.
 113   if (layer()->opacity() == 1.0f)
 114     items_grid_view_->SetTopItemViewsVisible(true);
 115
 116   if (layer()->opacity() == 0.0f)
 117     SetVisible(false);
 118 }
 119
 120 void AppListFolderView::CalculateIdealBounds() {
 121   gfx::Rect rect(GetContentsBounds());
 122   if (rect.IsEmpty())
 123     return;
 124
 125   gfx::Rect header_frame(rect);
 126   gfx::Size size = folder_header_view_->GetPreferredSize();
 127   header_frame.set_height(size.height());
 128   view_model_->set_ideal_bounds(kIndexFolderHeader, header_frame);
 129
 130   gfx::Rect grid_frame(rect);
 131   grid_frame.set_y(header_frame.height());
 132   view_model_->set_ideal_bounds(kIndexChildItems, grid_frame);
 133 }
 134
 135 gfx::Rect AppListFolderView::GetItemIconBoundsAt(int index) {
 136   AppListItemView* item_view = items_grid_view_->GetItemViewAt(index);
 137   // Icon bounds relative to AppListItemView.
 138   const gfx::Rect icon_bounds = item_view->GetIconBounds();
 139   gfx::Rect to_apps_grid_view = item_view->ConvertRectToParent(icon_bounds);
 140   gfx::Rect to_folder =
 141       items_grid_view_->ConvertRectToParent(to_apps_grid_view);
 142
 143   // Get the icon image's bound.
 144   to_folder.ClampToCenteredSize(
 145       gfx::Size(kPreferredIconDimension, kPreferredIconDimension));
 146
 147   return to_folder;
 148 }
 149
 150 void AppListFolderView::NavigateBack(AppListFolderItem* item,
 151                                      const ui::Event& event_flags) {
 152   container_view_->ShowApps(item);
 153 }
 154
 155 }  // namespace app_list