aura: Implement app list M19 mock.

ash/app_list/app_list_groups_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_groups_view.h"
-
-#include "ash/app_list/app_list_item_group_model.h"
-#include "ash/app_list/app_list_item_group_view.h"
-#include "ash/app_list/app_list_item_view.h"
-#include "ash/app_list/app_list_model.h"
-#include "base/utf_string_conversions.h"
-#include "third_party/skia/include/core/SkColor.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/views/animation/bounds_animator.h"
-#include "ui/views/controls/button/text_button.h"
-#include "ui/views/layout/box_layout.h"
-
-namespace ash {
-
-namespace {
-
-const SkColor kPageHeaderColor = SkColorSetARGB(0xFF, 0xB2, 0xB2, 0xB2);
-const SkColor kSelectedPageHeaderColor = SK_ColorWHITE;
-
-// Creates page headers view that hosts page title buttons.
-views::View* CreatePageHeader() {
-  views::View* header = new views::View;
-  header->SetLayoutManager(
-      new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 0));
-  return header;
-}
-
-// Creates page header button view that shows page title.
-views::View* CreatePageHeaderButton(views::ButtonListener* listener,
-                                    const std::string& title ) {
-  views::TextButton* button = new views::TextButton(listener,
-        UTF8ToUTF16(title));
-
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  button->SetFont(rb.GetFont(ResourceBundle::BaseFont).DeriveFont(
-      2, gfx::Font::BOLD));
-  button->SetEnabledColor(kPageHeaderColor);
-  return button;
-}
-
-// Gets preferred bounds of buttons and page.
-void GetPageAndHeaderBounds(views::View* parent,
-                            views::View* buttons,
-                            views::View* page,
-                            gfx::Rect* buttons_bounds,
-                            gfx::Rect* page_bounds) {
-  gfx::Rect content_bounds = parent->GetContentsBounds();
-
-  if (buttons) {
-    gfx::Size buttons_size = buttons->GetPreferredSize();
-    if (buttons_bounds) {
-      buttons_bounds->SetRect(
-          (content_bounds.width() - buttons_size.width()) / 2,
-          content_bounds.bottom() - buttons_size.height(),
-          buttons_size.width(), buttons_size.height());
-    }
-
-    content_bounds.set_height(
-        std::max(0, content_bounds.height() - buttons_size.height()));
-  }
-
-  if (page_bounds) {
-    gfx::Size page_size = page->GetPreferredSize();
-    *page_bounds = content_bounds.Center(page_size);
-  }
-}
-
-}  // namespace
-
-AppListGroupsView::AppListGroupsView(AppListModel* model,
-                                     AppListItemViewListener* listener)
-    : model_(model),
-      listener_(listener),
-      page_buttons_(NULL),
-      current_page_(0) {
-  animator_.reset(new views::BoundsAnimator(this));
-  model_->AddObserver(this);
-  Update();
-}
-
-AppListGroupsView::~AppListGroupsView() {
-  model_->RemoveObserver(this);
-}
-
-views::View* AppListGroupsView::GetFocusedTile() const {
-  AppListItemGroupView* page = GetCurrentPageView();
-  return page ? page->GetFocusedTile() : NULL;
-}
-
-void AppListGroupsView::Update() {
-  current_page_ = 0;
-  page_buttons_ = NULL;
-  RemoveAllChildViews(true);
-
-  int page_count = model_->group_count();
-  if (!page_count)
-    return;
-
-  if (page_count > 1)
-    AddChildView(page_buttons_ = CreatePageHeader());
-
-  for (int i = 0; i < page_count; ++i) {
-    AppListItemGroupModel* group = model_->GetGroup(i);
-    AddPage(group->title(), new AppListItemGroupView(group, listener_));
-  }
-
-  if (!size().IsEmpty())
-    Layout();
-  SetCurrentPage(0);
-}
-
-void AppListGroupsView::AddPage(const std::string& title,
-                                AppListItemGroupView* page) {
-  pages_.push_back(page);
-  AddChildView(page);
-
-  if (page_buttons_)
-    page_buttons_->AddChildView(CreatePageHeaderButton(this, title));
-}
-
-int AppListGroupsView::GetPreferredTilesPerRow() const {
-  return std::max(1, width() / AppListItemView::kTileSize);
-}
-
-AppListItemGroupView* AppListGroupsView::GetCurrentPageView() const {
-  return static_cast<size_t>(current_page_) < pages_.size() ?
-      pages_[current_page_] : NULL;
-}
-
-void AppListGroupsView::SetCurrentPage(int page) {
-  int previous_page = current_page_;
-  current_page_ = page;
-
- // Updates page buttons.
-  if (page_buttons_) {
-    for (int i = 0; i < page_buttons_->child_count(); ++i) {
-      views::TextButton* button = static_cast<views::TextButton*>(
-          page_buttons_->child_at(i));
-
-      button->SetEnabledColor(i == current_page_ ?
-          kSelectedPageHeaderColor : kPageHeaderColor);
-    }
-    page_buttons_->SchedulePaint();
-  }
-
-  // Gets sliding animation direction.
-  int dir = previous_page < current_page_ ? -1 :
-      previous_page > current_page_ ? 1 : 0;
-
-  // Skips animation if no sliding needed or no valid size.
-  if (dir == 0 || size().IsEmpty())
-    return;
-
-  animator_->Cancel();
-
-  // Makes sure new page has correct layout and focus to its focused tile.
-  AppListItemGroupView* current_view = GetCurrentPageView();
-  current_view->SetTilesPerRow(GetPreferredTilesPerRow());
-  views::View* tile = current_view->GetFocusedTile();
-  if (tile)
-    tile->RequestFocus();
-
-  // Prepares current page before animation.
-  gfx::Rect current_page_bounds;
-  GetPageAndHeaderBounds(this, page_buttons_, current_view,
-      NULL, &current_page_bounds);
-  current_page_bounds.Offset(- dir * width(), 0);
-  current_view->SetBoundsRect(current_page_bounds);
-
-  // Schedules animations to slide out previous page and slide in current page.
-  AppListItemGroupView* previous_view = pages_[previous_page];
-  gfx::Rect previous_page_bounds = previous_view->bounds();
-  previous_page_bounds.Offset(dir * width(), 0);
-  animator_->AnimateViewTo(previous_view, previous_page_bounds);
-
-  current_page_bounds.Offset(dir * width(), 0);
-  animator_->AnimateViewTo(current_view, current_page_bounds);
-}
-
-void AppListGroupsView::Layout() {
-  AppListItemGroupView* page = GetCurrentPageView();
-  if (!page)
-    return;
-
-  page->SetTilesPerRow(GetPreferredTilesPerRow());
-
-  gfx::Rect buttons_bounds;
-  gfx::Rect page_bounds;
-  GetPageAndHeaderBounds(this, page_buttons_, page,
-      &buttons_bounds, &page_bounds);
-
-  if (page_buttons_)
-    page_buttons_->SetBoundsRect(buttons_bounds);
-
-  page->SetBoundsRect(page_bounds);
-}
-
-bool AppListGroupsView::OnKeyPressed(const views::KeyEvent& event) {
-  if (event.IsControlDown()) {
-    switch (event.key_code()) {
-      case ui::VKEY_LEFT:
-        if (current_page_ > 0)
-          SetCurrentPage(current_page_ - 1);
-        return true;
-      case ui::VKEY_RIGHT:
-        if (static_cast<size_t>(current_page_ + 1) < pages_.size())
-          SetCurrentPage(current_page_ + 1);
-        return true;
-      default:
-        break;
-    }
-  }
-
-  return false;
-}
-
-void AppListGroupsView::ButtonPressed(views::Button* sender,
-                                      const views::Event& event) {
-  DCHECK(page_buttons_);
-  for (int i = 0; i < page_buttons_->child_count(); ++i) {
-    if (page_buttons_->child_at(i) == sender)
-      SetCurrentPage(i);
-  }
-}
-
-void AppListGroupsView::ListItemsAdded(int start, int count) {
-  Update();
-}
-
-void AppListGroupsView::ListItemsRemoved(int start, int count) {
-  Update();
-}
-
-void AppListGroupsView::ListItemsChanged(int start, int count) {
-  NOTREACHED();
-}
-
-}  // namespace ash