aura: Implement new app list mock.

ash/app_list/app_list_item_group_view.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ash/app_list/app_list_item_group_view.h"
-
-#include "ash/app_list/app_list_item_group_model.h"
-#include "ash/app_list/app_list_item_view.h"
-#include "ui/views/layout/grid_layout.h"
-
-namespace ash {
-
-AppListItemGroupView::AppListItemGroupView(AppListItemGroupModel* model,
-                                           AppListItemViewListener* listener)
-    : model_(model),
-      listener_(listener),
-      tiles_per_row_(0),
-      focused_index_(0) {
-  Update();
-}
-
-AppListItemGroupView::~AppListItemGroupView() {
-}
-
-void AppListItemGroupView::SetTilesPerRow(int tiles_per_row) {
-  if (tiles_per_row_ == tiles_per_row)
-    return;
-
-  tiles_per_row_ = tiles_per_row;
-  Update();
-}
-
-void AppListItemGroupView::Update() {
-  RemoveAllChildViews(true);
-  if (model_->item_count() == 0 || tiles_per_row_ == 0)
-    return;
-
-  views::GridLayout* layout = new views::GridLayout(this);
-  SetLayoutManager(layout);
-
-  const int kTileColumnSetId = 0;
-  views::ColumnSet* column_set = layout->AddColumnSet(kTileColumnSetId);
-  for (int i = 0; i < tiles_per_row_; ++i) {
-    column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
-                          views::GridLayout::USE_PREF, 0, 0);
-  }
-
-  for (int i = 0; i < model_->item_count(); ++i) {
-    if (i % tiles_per_row_ == 0)
-      layout->StartRow(0, kTileColumnSetId);
-
-    layout->AddView(new AppListItemView(model_->GetItem(i), listener_));
-  }
-}
-
-views::View* AppListItemGroupView::GetFocusedTile() {
-  return focused_index_ < child_count() ? child_at(focused_index_) : NULL;
-}
-
-void AppListItemGroupView::UpdateFocusedTile(views::View* tile) {
-  for (int i = 0; i < child_count(); ++i) {
-    if (child_at(i) == tile) {
-      focused_index_ = i;
-      break;
-    }
-  }
-}
-
-void AppListItemGroupView::SetFocusedTileByIndex(int index) {
-  index = std::max(0, std::min(child_count() - 1, index));
-  if (index != focused_index_)
-    child_at(index)->RequestFocus();
-}
-
-bool AppListItemGroupView::OnKeyPressed(const views::KeyEvent& event) {
-  if (!event.IsControlDown() && !event.IsShiftDown() && !event.IsAltDown()) {
-    // Arrow keys navigates in tile grid.
-    switch (event.key_code()) {
-      case ui::VKEY_LEFT:
-        if (focused_index_ > 0)
-          SetFocusedTileByIndex(focused_index_ - 1);
-        return true;
-      case ui::VKEY_RIGHT:
-        if (focused_index_ + 1 < child_count())
-          SetFocusedTileByIndex(focused_index_ + 1);
-        return true;
-      case ui::VKEY_UP:
-        if (focused_index_ - tiles_per_row_ >= 0)
-          SetFocusedTileByIndex(focused_index_ - tiles_per_row_);
-        return true;
-      case ui::VKEY_DOWN:
-        if (focused_index_ + tiles_per_row_ < child_count())
-          SetFocusedTileByIndex(focused_index_ + tiles_per_row_);
-        return true;
-      default:
-        break;
-    }
-  }
-
-  return false;
-}
-
-void AppListItemGroupView::ListItemsAdded(int start, int count) {
-  Update();
-}
-
-void AppListItemGroupView::ListItemsRemoved(int start, int count) {
-  Update();
-}
-
-void AppListItemGroupView::ListItemsChanged(int start, int count) {
-  NOTREACHED();
-}
-
-}  // namespace ash