Introduce centered view and bottom view for home card.

athena/home/bottom_home_view.cc

+// Copyright 2014 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 "athena/home/bottom_home_view.h"
+
+#include "ui/app_list/app_list_item_list.h"
+#include "ui/app_list/app_list_model.h"
+#include "ui/app_list/app_list_view_delegate.h"
+#include "ui/app_list/views/search_box_view.h"
+#include "ui/app_list/views/tile_item_view.h"
+#include "ui/views/background.h"
+#include "ui/views/border.h"
+#include "ui/views/layout/box_layout.h"
+
+namespace athena {
+
+BottomHomeView::BottomHomeView(app_list::AppListViewDelegate* view_delegate)
+    : view_delegate_(view_delegate) {
+  set_background(views::Background::CreateSolidBackground(SK_ColorWHITE));
+  SetBorder(views::Border::CreateSolidBorder(1, SK_ColorBLACK));
+  SetLayoutManager(new views::BoxLayout(
+      views::BoxLayout::kVertical, 0, 0, 0));
+
+  app_list::AppListModel* model = view_delegate->GetModel();
+  app_list::AppListItemList* top_level = model->top_level_item_list();
+
+  views::View* items_container = new views::View();
+  AddChildView(items_container);
+
+  views::BoxLayout* items_layout = new views::BoxLayout(
+      views::BoxLayout::kHorizontal, 0, 0, 0);
+  items_layout->set_main_axis_alignment(
+      views::BoxLayout::MAIN_AXIS_ALIGNMENT_FILL);
+  items_container->SetLayoutManager(items_layout);
+  for (size_t i = 0; i < top_level->item_count(); ++i) {
+    app_list::TileItemView* tile_item_view = new app_list::TileItemView();
+    tile_item_view->SetAppListItem(top_level->item_at(i));
+    items_container->AddChildView(tile_item_view);
+  }
+
+  app_list::SearchBoxView* search_box = new app_list::SearchBoxView(
+      this, view_delegate);
+  AddChildView(search_box);
+}
+
+BottomHomeView::~BottomHomeView() {}
+
+void BottomHomeView::QueryChanged(app_list::SearchBoxView* sender) {
+  // Nothing needs to be done.
+}
+
+}  // namespace athena