app_list: Add search box and search result view for v2.

- Add a SearchBoxModel that represents search box's icon, placeholder text,
  user typed text and selection model (current selection and cursor position);
- Add a SearchBoxView that displays SearchBoxModel and observes SearchBoxModel
  changes via SearchBoxModelObserver;
  When user typed/changed text in search box, the view also fires query changed
  notification to its SearchBoxViewDelegate;
- Add a SearchResult that carries an icon, two tagged texts;
- Add a SearchResultView that displays a SearchResult;
- Change AppListModel to be a master model that has three sub models:
  apps list, search box and search results;
- Add a SearchResultListView that display search results sub model of
  AppListModel using a list of SeachResultView;
  The view supports up/down key navigation and when user selects a result
  via mouse click or enter key, it asks its SearchResultListViewDelegate to
  OpenResult;
- Update AppListViewDelegate:
  - Add new methods: StartSearch, StopSearch and OpenResult;
  - Deleted no-longer needed UpdateModel method;
  - Rename OnAppListItemActivated -> ActivateAppListItem;
- Update ash_shell's app_list to support a simple substr match search;
- Add a SearchBuilder that implements the search via AutoCompleteController;
- Other changes:
  - Rename AppListModelBuilder -> AppsModelBuilder;
  - Rename AppListModelView -> AppsGridView;

BUG=125964
TEST=Manual. In ash_shell, it searches the 5 example apps. In ash/chrome, it should show similar results as omnibox.


Review URL: https://chromiumcodereview.appspot.com/10386224

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138938 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 33 insertions, 0 deletions

diff --git a/ui/app_list/search_box_model_observer.h b/ui/app_list/search_box_model_observer.h
new file mode 100644
index 0000000..0393ade
--- /dev/null
+++ b/ui/app_list/search_box_model_observer.h
@@ -0,0 +1,33 @@
+// 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.
+
+#ifndef UI_APP_LIST_SEARCH_BOX_MODEL_OBSERVER_H_
+#define UI_APP_LIST_SEARCH_BOX_MODEL_OBSERVER_H_
+#pragma once
+
+#include "ui/app_list/app_list_export.h"
+
+namespace app_list {
+
+class APP_LIST_EXPORT SearchBoxModelObserver {
+ public:
+  // Invoked when icon is changed.
+  virtual void IconChanged() = 0;
+
+  // Invoked when hint text is changed.
+  virtual void HintTextChanged() = 0;
+
+  // Invoked when selection model is changed.
+  virtual void SelectionModelChanged() = 0;
+
+  // Invoked when text is changed.
+  virtual void TextChanged() = 0;
+
+ protected:
+  virtual ~SearchBoxModelObserver() {}
+};
+
+}  // namespace app_list
+
+#endif  // UI_APP_LIST_SEARCH_BOX_MODEL_OBSERVER_H_