Implement app list folder management page UI.

ui/app_list/views/apps_container_view.cc

+// Copyright 2013 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 "ui/app_list/views/apps_container_view.h"
+
+#include "ui/app_list/app_list_constants.h"
+#include "ui/app_list/app_list_folder_item.h"
+#include "ui/app_list/pagination_model.h"
+#include "ui/app_list/views/app_list_folder_view.h"
+#include "ui/app_list/views/app_list_main_view.h"
+#include "ui/app_list/views/apps_grid_view.h"
+
+namespace app_list {
+
+AppsContainerView::AppsContainerView(AppListMainView* app_list_main_view,
+                                     PaginationModel* pagination_model,
+                                     AppListModel* model,
+                                     content::WebContents* start_page_contents)
+    : model_(model),
+      show_state_(SHOW_APPS) {
+  apps_grid_view_ = new AppsGridView(
+      app_list_main_view, pagination_model, start_page_contents);
+  apps_grid_view_->SetLayout(kPreferredIconDimension,
+                             kPreferredCols,
+                             kPreferredRows);
+  AddChildView(apps_grid_view_);
+
+  app_list_folder_view_ = new AppListFolderView(
+      this,
+      model,
+      app_list_main_view,
+      start_page_contents);
+  AddChildView(app_list_folder_view_);
+
+  apps_grid_view_->SetModel(model_);
+  apps_grid_view_->SetApps(model_->apps());
+}
+
+AppsContainerView::~AppsContainerView() {
+}
+
+void AppsContainerView::ShowActiveFolder(AppListFolderItem* folder_item) {
+  app_list_folder_view_->SetAppListFolderItem(folder_item);
+  SetShowState(SHOW_ACTIVE_FOLDER);
+}
+
+void AppsContainerView::ShowApps() {
+  SetShowState(SHOW_APPS);
+}
+
+gfx::Size AppsContainerView::GetPreferredSize() {
+  const gfx::Size grid_size = apps_grid_view_->GetPreferredSize();
+  const gfx::Size folder_view_size = app_list_folder_view_->GetPreferredSize();
+
+  int width = std::max(grid_size.width(), folder_view_size.width());
+  int height = std::max(grid_size.height(), folder_view_size.height());
+  return gfx::Size(width, height);
+}
+
+void AppsContainerView::Layout() {
+  gfx::Rect rect(GetContentsBounds());
+  if (rect.IsEmpty())
+    return;
+
+  switch(show_state_) {
+    case SHOW_APPS:
+      app_list_folder_view_->SetVisible(false);
+      apps_grid_view_->SetBoundsRect(rect);
+      apps_grid_view_->SetVisible(true);
+      break;
+    case SHOW_ACTIVE_FOLDER:
+      apps_grid_view_->SetVisible(false);
+      app_list_folder_view_->SetBoundsRect(rect);
+      app_list_folder_view_->SetVisible(true);
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
+void AppsContainerView::SetShowState(ShowState show_state) {
+  if (show_state_ == show_state)
+    return;
+
+  show_state_ = show_state;
+  Layout();
+}
+
+}  // namespace app_list
+
+
+