Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

ui/app_list/search_result_list_view.cc

-// Copyright (c) 2012 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/search_result_list_view.h"
-
-#include <algorithm>
-
-#include "base/bind.h"
-#include "base/message_loop.h"
-#include "ui/app_list/search_result_list_view_delegate.h"
-#include "ui/app_list/search_result_view.h"
-#include "ui/base/events/event.h"
-#include "ui/views/layout/box_layout.h"
-
-namespace {
-
-const int kMaxResults = 6;
-
-}  // namespace
-
-namespace app_list {
-
-SearchResultListView::SearchResultListView(
-    SearchResultListViewDelegate* delegate)
-    : delegate_(delegate),
-      results_(NULL),
-      last_visible_index_(0),
-      selected_index_(-1),
-      ALLOW_THIS_IN_INITIALIZER_LIST(update_factory_(this)) {
-  SetLayoutManager(
-      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
-
-  for (int i = 0; i < kMaxResults; ++i)
-    AddChildView(new SearchResultView(this, this));
-}
-
-SearchResultListView::~SearchResultListView() {
-  if (results_)
-    results_->RemoveObserver(this);
-}
-
-void SearchResultListView::SetResults(AppListModel::SearchResults* results) {
-  if (results_)
-    results_->RemoveObserver(this);
-
-  results_ = results;
-  if (results_)
-    results_->AddObserver(this);
-
-  Update();
-}
-
-void SearchResultListView::SetSelectedIndex(int selected_index) {
-  if (selected_index_ == selected_index)
-    return;
-
-  if (selected_index_ >= 0)
-    GetResultViewAt(selected_index_)->SchedulePaint();
-
-  selected_index_ = selected_index;
-
-  if (selected_index_ >= 0)
-    GetResultViewAt(selected_index_)->SchedulePaint();
-}
-
-bool SearchResultListView::IsResultViewSelected(
-    const SearchResultView* result_view) const {
-  if (selected_index_ < 0)
-    return false;
-
-  return static_cast<const SearchResultView*>(child_at(selected_index_)) ==
-      result_view;
-}
-
-bool SearchResultListView::OnKeyPressed(const ui::KeyEvent& event) {
-  switch (event.key_code()) {
-    case ui::VKEY_UP:
-      SetSelectedIndex(std::max(selected_index_ - 1, 0));
-      return true;
-    case ui::VKEY_DOWN:
-      SetSelectedIndex(std::min(selected_index_ + 1, last_visible_index_));
-      return true;
-    case ui::VKEY_RETURN:
-      if (selected_index_ >= 0)
-        SearchResultActivated(GetResultViewAt(selected_index_), event);
-      return true;
-    default:
-      break;
-  }
-  return false;
-}
-
-SearchResultView* SearchResultListView::GetResultViewAt(int index) {
-  DCHECK(index >= 0 && index < child_count());
-  return static_cast<SearchResultView*>(child_at(index));
-}
-
-void SearchResultListView::Update() {
-  last_visible_index_ = 0;
-  for (size_t i = 0; i < static_cast<size_t>(child_count()); ++i) {
-    SearchResultView* result_view = GetResultViewAt(i);
-    if (i < results_->item_count()) {
-      result_view->SetResult(results_->GetItemAt(i));
-      result_view->SetVisible(true);
-      last_visible_index_ = i;
-    } else {
-      result_view->SetResult(NULL);
-      result_view->SetVisible(false);
-    }
-  }
-  if (selected_index_ > last_visible_index_)
-    SetSelectedIndex(last_visible_index_);
-
-  Layout();
-  update_factory_.InvalidateWeakPtrs();
-}
-
-void SearchResultListView::ScheduleUpdate() {
-  // When search results are added one by one, each addition generates an update
-  // request. Consolidates those update requests into one Update call.
-  if (!update_factory_.HasWeakPtrs()) {
-    MessageLoop::current()->PostTask(
-        FROM_HERE,
-        base::Bind(&SearchResultListView::Update,
-                   update_factory_.GetWeakPtr()));
-  }
-}
-
-void SearchResultListView::ListItemsAdded(size_t start, size_t count) {
-  ScheduleUpdate();
-}
-
-void SearchResultListView::ListItemsRemoved(size_t start, size_t count) {
-  size_t last = std::min(start + count, static_cast<size_t>(child_count()));
-  for (size_t i = start; i < last; ++i)
-    GetResultViewAt(i)->ClearResultNoRepaint();
-
-  ScheduleUpdate();
-}
-
-void SearchResultListView::ListItemMoved(size_t index, size_t target_index) {
-  NOTREACHED();
-}
-
-void SearchResultListView::ListItemsChanged(size_t start, size_t count) {
-  ScheduleUpdate();
-}
-
-void SearchResultListView::SearchResultActivated(SearchResultView* view,
-                                                 const ui::Event& event) {
-  if (delegate_ && view->result())
-    delegate_->OpenResult(*(view->result()), event.flags());
-}
-
-void SearchResultListView::SearchResultActionActivated(SearchResultView* view,
-                                                       int action_index,
-                                                       const ui::Event& event) {
-  if (delegate_ && view->result()) {
-    delegate_->InvokeResultAction(
-        *(view->result()), action_index, event.flags());
-  }
-}
-
-}  // namespace app_list