ash/shell/app_list.cc - chromium/src - Git at Google

 // 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 <memory>
 #include <string>
 #include <utility>
 #include <vector>

 #include "ash/app_list/app_list_controller_impl.h"
 #include "ash/app_list/app_list_view_delegate.h"
 #include "ash/app_list/model/app_list_item.h"
 #include "ash/app_list/model/app_list_item_list.h"
 #include "ash/app_list/model/app_list_model.h"
 #include "ash/app_list/model/search/search_box_model.h"
 #include "ash/app_list/model/search/search_model.h"
 #include "ash/app_list/model/search/search_result.h"
 #include "ash/session/session_controller.h"
 #include "ash/shell.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell/toplevel_window.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/string_search.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/views/examples/example_base.h"
 #include "ui/views/examples/examples_window.h"

 namespace ash {
 namespace shell {

 namespace {

 // WindowTypeShelfItem is an app item of app list. It carries a window
 // launch type and launches corresponding example window when activated.
 class WindowTypeShelfItem : public app_list::AppListItem {
  public:
   enum Type {
     TOPLEVEL_WINDOW = 0,
     NON_RESIZABLE_WINDOW,
     LOCK_SCREEN,
     WIDGETS_WINDOW,
     EXAMPLES_WINDOW,
     LAST_TYPE,
   };

   WindowTypeShelfItem(const std::string& id, Type type);
   ~WindowTypeShelfItem() override;

   static gfx::ImageSkia GetIcon(Type type) {
     static const SkColor kColors[] = {
         SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorYELLOW, SK_ColorCYAN,
     };

     const int kIconSize = 128;
     SkBitmap icon;
     icon.allocN32Pixels(kIconSize, kIconSize);
     icon.eraseColor(kColors[static_cast<int>(type) % base::size(kColors)]);
     return gfx::ImageSkia::CreateFrom1xBitmap(icon);
   }

   // The text below is not localized as this is an example code.
   static std::string GetTitle(Type type) {
     switch (type) {
       case TOPLEVEL_WINDOW:
         return "Create Window";
       case NON_RESIZABLE_WINDOW:
         return "Create Non-Resizable Window";
       case LOCK_SCREEN:
         return "Lock Screen";
       case WIDGETS_WINDOW:
         return "Show Example Widgets";
       case EXAMPLES_WINDOW:
         return "Open Views Examples Window";
       default:
         return "Unknown window type.";
     }
   }

   // The text below is not localized as this is an example code.
   static std::string GetDetails(Type type) {
     // Assigns details only to some types so that we see both one-line
     // and two-line results.
     switch (type) {
       case WIDGETS_WINDOW:
         return "Creates a window to show example widgets";
       case EXAMPLES_WINDOW:
         return "Creates a window to show views example.";
       default:
         return std::string();
     }
   }

   static void ActivateItem(Type type, int event_flags) {
     switch (type) {
       case TOPLEVEL_WINDOW: {
         ToplevelWindow::CreateParams params;
         params.can_resize = true;
         ToplevelWindow::CreateToplevelWindow(params);
         break;
       }
       case NON_RESIZABLE_WINDOW: {
         ToplevelWindow::CreateToplevelWindow(ToplevelWindow::CreateParams());
         break;
       }
       case LOCK_SCREEN: {
         Shell::Get()->session_controller()->LockScreen();
         break;
       }
       case WIDGETS_WINDOW: {
         CreateWidgetsWindow();
         break;
       }
       case EXAMPLES_WINDOW: {
         views::examples::ShowExamplesWindow(base::DoNothing());
         break;
       }
       default:
         break;
     }
   }

   void Activate(int event_flags) { ActivateItem(type_, event_flags); }

  private:
   Type type_;

   DISALLOW_COPY_AND_ASSIGN(WindowTypeShelfItem);
 };

 WindowTypeShelfItem::WindowTypeShelfItem(const std::string& id, Type type)
     : app_list::AppListItem(id), type_(type) {
   std::string title(GetTitle(type));
   SetIcon(GetIcon(type));
   SetName(title);
 }

 WindowTypeShelfItem::~WindowTypeShelfItem() = default;

 // ExampleSearchResult is an app list search result. It provides what icon to
 // show, what should title and details text look like. It also carries the
 // matching window launch type so that AppListViewDelegate knows how to open
 // it.
 class ExampleSearchResult : public app_list::SearchResult {
  public:
   ExampleSearchResult(WindowTypeShelfItem::Type type,
                       const base::string16& query)
       : type_(type) {
     SetIcon(WindowTypeShelfItem::GetIcon(type_));

     base::string16 title =
         base::UTF8ToUTF16(WindowTypeShelfItem::GetTitle(type_));
     set_title(title);

     Tags title_tags;
     const size_t match_len = query.length();

     // Highlight matching parts in title with bold.
     // Note the following is not a proper way to handle i18n string.
     title = base::i18n::ToLower(title);
     size_t match_start = title.find(query);
     while (match_start != base::string16::npos) {
       title_tags.push_back(
           Tag(Tag::MATCH, match_start, match_start + match_len));
       match_start = title.find(query, match_start + match_len);
     }
     set_title_tags(title_tags);

     base::string16 details =
         base::UTF8ToUTF16(WindowTypeShelfItem::GetDetails(type_));
     set_details(details);
     Tags details_tags;
     details_tags.push_back(Tag(Tag::DIM, 0, details.length()));
     set_details_tags(details_tags);
   }

   WindowTypeShelfItem::Type type() const { return type_; }

  private:
   WindowTypeShelfItem::Type type_;

   DISALLOW_COPY_AND_ASSIGN(ExampleSearchResult);
 };

 class ExampleAppListViewDelegate : public app_list::AppListViewDelegate {
  public:
   ExampleAppListViewDelegate()
       : model_(std::make_unique<app_list::AppListModel>()),
         search_model_(std::make_unique<app_list::SearchModel>()) {
     PopulateApps();
     DecorateSearchBox(search_model_->search_box());
   }

  private:
   void PopulateApps() {
     for (int i = 0; i < static_cast<int>(WindowTypeShelfItem::LAST_TYPE); ++i) {
       WindowTypeShelfItem::Type type =
           static_cast<WindowTypeShelfItem::Type>(i);
       std::string id = base::IntToString(i);
       std::unique_ptr<WindowTypeShelfItem> shelf_item(
           new WindowTypeShelfItem(id, type));
       model_->AddItem(std::move(shelf_item));
     }
   }

   void DecorateSearchBox(app_list::SearchBoxModel* search_box_model) {
     search_box_model->SetHintText(base::ASCIIToUTF16("Type to search..."));
   }

   // Overridden from app_list::AppListViewDelegate:
   app_list::AppListModel* GetModel() override { return model_.get(); }

   app_list::SearchModel* GetSearchModel() override {
     return search_model_.get();
   }

   void OpenSearchResult(const std::string& result_id,
                         int event_flags) override {
     const ExampleSearchResult* example_result =
         static_cast<const ExampleSearchResult*>(
             search_model_->FindSearchResult(result_id));
     WindowTypeShelfItem::ActivateItem(example_result->type(), event_flags);
   }

   void InvokeSearchResultAction(const std::string& result_id,
                                 int action_index,
                                 int event_flags) override {
     NOTIMPLEMENTED();
   }

   void StartAssistant() override { NOTIMPLEMENTED(); }

   void StartSearch(const base::string16& raw_query) override {
     base::string16 query;
     base::TrimWhitespace(raw_query, base::TRIM_ALL, &query);
     query = base::i18n::ToLower(query);

     search_model_->results()->DeleteAll();
     if (query.empty())
       return;

     for (int i = 0; i < static_cast<int>(WindowTypeShelfItem::LAST_TYPE); ++i) {
       WindowTypeShelfItem::Type type =
           static_cast<WindowTypeShelfItem::Type>(i);

       base::string16 title =
           base::UTF8ToUTF16(WindowTypeShelfItem::GetTitle(type));
       if (base::i18n::StringSearchIgnoringCaseAndAccents(query, title, NULL,
                                                          NULL)) {
         search_model_->results()->Add(
             std::make_unique<ExampleSearchResult>(type, query));
       }
     }
   }

   void ViewShown(int64_t display_id) override {
     // Nothing needs to be done.
   }

   void DismissAppList() override {
     Shell::Get()->app_list_controller()->DismissAppList();
   }

   void ViewClosing() override {
     // Nothing needs to be done.
   }

   void ViewClosed() override {
     // Nothing needs to be done.
   }

   void GetWallpaperProminentColors(
       GetWallpaperProminentColorsCallback callback) override {
     NOTIMPLEMENTED();
   }

   void ActivateItem(const std::string& id, int event_flags) override {
     WindowTypeShelfItem* item =
         static_cast<WindowTypeShelfItem*>(model_->FindItem(id));
     if (!item)
       return;
     item->Activate(event_flags);
   }

   void GetContextMenuModel(const std::string& id,
                            GetContextMenuModelCallback callback) override {
     NOTIMPLEMENTED();
   }

   void GetSearchResultContextMenuModel(
       const std::string& result_id,
       GetContextMenuModelCallback callback) override {
     NOTIMPLEMENTED();
   }

   void ContextMenuItemSelected(const std::string& id,
                                int command_id,
                                int event_flags) override {
     NOTIMPLEMENTED();
   }

   void ShowWallpaperContextMenu(const gfx::Point& onscreen_location,
                                 ui::MenuSourceType source_type) override {
     NOTIMPLEMENTED();
   }

   void SearchResultContextMenuItemSelected(const std::string& result_id,
                                            int command_id,
                                            int event_flags) override {
     NOTIMPLEMENTED();
   }

   bool ProcessHomeLauncherGesture(ui::GestureEvent* event,
                                   const gfx::Point& screen_location) override {
     NOTIMPLEMENTED();
     return false;
   }

   bool CanProcessEventsOnApplistViews() override {
     NOTIMPLEMENTED();
     return true;
   }

   void GetNavigableContentsFactory(
       content::mojom::NavigableContentsFactoryRequest request) override {
     NOTIMPLEMENTED();
   }

   std::unique_ptr<app_list::AppListModel> model_;
   std::unique_ptr<app_list::SearchModel> search_model_;

   DISALLOW_COPY_AND_ASSIGN(ExampleAppListViewDelegate);
 };

 }  // namespace

 app_list::AppListViewDelegate* CreateAppListViewDelegate() {
   return new ExampleAppListViewDelegate;
 }

 }  // namespace shell
 }  // namespace ash
	// 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 <memory>
	#include <string>
	#include <utility>
	#include <vector>

	#include "ash/app_list/app_list_controller_impl.h"
	#include "ash/app_list/app_list_view_delegate.h"
	#include "ash/app_list/model/app_list_item.h"
	#include "ash/app_list/model/app_list_item_list.h"
	#include "ash/app_list/model/app_list_model.h"
	#include "ash/app_list/model/search/search_box_model.h"
	#include "ash/app_list/model/search/search_model.h"
	#include "ash/app_list/model/search/search_result.h"
	#include "ash/session/session_controller.h"
	#include "ash/shell.h"
	#include "ash/shell/example_factory.h"
	#include "ash/shell/toplevel_window.h"
	#include "base/bind_helpers.h"
	#include "base/callback.h"
	#include "base/files/file_path.h"
	#include "base/i18n/case_conversion.h"
	#include "base/i18n/string_search.h"
	#include "base/stl_util.h"
	#include "base/strings/string_number_conversions.h"
	#include "base/strings/string_util.h"
	#include "base/strings/utf_string_conversions.h"
	#include "ui/gfx/canvas.h"
	#include "ui/gfx/font_list.h"
	#include "ui/gfx/geometry/rect.h"
	#include "ui/gfx/image/image_skia.h"
	#include "ui/views/examples/example_base.h"
	#include "ui/views/examples/examples_window.h"

	namespace ash {
	namespace shell {

	namespace {

	// WindowTypeShelfItem is an app item of app list. It carries a window
	// launch type and launches corresponding example window when activated.
	class WindowTypeShelfItem : public app_list::AppListItem {
	public:
	enum Type {
	TOPLEVEL_WINDOW = 0,
	NON_RESIZABLE_WINDOW,
	LOCK_SCREEN,
	WIDGETS_WINDOW,
	EXAMPLES_WINDOW,
	LAST_TYPE,
	};

	WindowTypeShelfItem(const std::string& id, Type type);
	~WindowTypeShelfItem() override;

	static gfx::ImageSkia GetIcon(Type type) {
	static const SkColor kColors[] = {
	SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorYELLOW, SK_ColorCYAN,
	};

	const int kIconSize = 128;
	SkBitmap icon;
	icon.allocN32Pixels(kIconSize, kIconSize);
	icon.eraseColor(kColors[static_cast<int>(type) % base::size(kColors)]);
	return gfx::ImageSkia::CreateFrom1xBitmap(icon);
	}

	// The text below is not localized as this is an example code.
	static std::string GetTitle(Type type) {
	switch (type) {
	case TOPLEVEL_WINDOW:
	return "Create Window";
	case NON_RESIZABLE_WINDOW:
	return "Create Non-Resizable Window";
	case LOCK_SCREEN:
	return "Lock Screen";
	case WIDGETS_WINDOW:
	return "Show Example Widgets";
	case EXAMPLES_WINDOW:
	return "Open Views Examples Window";
	default:
	return "Unknown window type.";
	}
	}

	// The text below is not localized as this is an example code.
	static std::string GetDetails(Type type) {
	// Assigns details only to some types so that we see both one-line
	// and two-line results.
	switch (type) {
	case WIDGETS_WINDOW:
	return "Creates a window to show example widgets";
	case EXAMPLES_WINDOW:
	return "Creates a window to show views example.";
	default:
	return std::string();
	}
	}

	static void ActivateItem(Type type, int event_flags) {
	switch (type) {
	case TOPLEVEL_WINDOW: {
	ToplevelWindow::CreateParams params;
	params.can_resize = true;
	ToplevelWindow::CreateToplevelWindow(params);
	break;
	}
	case NON_RESIZABLE_WINDOW: {
	ToplevelWindow::CreateToplevelWindow(ToplevelWindow::CreateParams());
	break;
	}
	case LOCK_SCREEN: {
	Shell::Get()->session_controller()->LockScreen();
	break;
	}
	case WIDGETS_WINDOW: {
	CreateWidgetsWindow();
	break;
	}
	case EXAMPLES_WINDOW: {
	views::examples::ShowExamplesWindow(base::DoNothing());
	break;
	}
	default:
	break;
	}
	}

	void Activate(int event_flags) { ActivateItem(type_, event_flags); }

	private:
	Type type_;

	DISALLOW_COPY_AND_ASSIGN(WindowTypeShelfItem);
	};

	WindowTypeShelfItem::WindowTypeShelfItem(const std::string& id, Type type)
	: app_list::AppListItem(id), type_(type) {
	std::string title(GetTitle(type));
	SetIcon(GetIcon(type));
	SetName(title);
	}

	WindowTypeShelfItem::~WindowTypeShelfItem() = default;

	// ExampleSearchResult is an app list search result. It provides what icon to
	// show, what should title and details text look like. It also carries the
	// matching window launch type so that AppListViewDelegate knows how to open
	// it.
	class ExampleSearchResult : public app_list::SearchResult {
	public:
	ExampleSearchResult(WindowTypeShelfItem::Type type,
	const base::string16& query)
	: type_(type) {
	SetIcon(WindowTypeShelfItem::GetIcon(type_));

	base::string16 title =
	base::UTF8ToUTF16(WindowTypeShelfItem::GetTitle(type_));
	set_title(title);

	Tags title_tags;
	const size_t match_len = query.length();

	// Highlight matching parts in title with bold.
	// Note the following is not a proper way to handle i18n string.
	title = base::i18n::ToLower(title);
	size_t match_start = title.find(query);
	while (match_start != base::string16::npos) {
	title_tags.push_back(
	Tag(Tag::MATCH, match_start, match_start + match_len));
	match_start = title.find(query, match_start + match_len);
	}
	set_title_tags(title_tags);

	base::string16 details =
	base::UTF8ToUTF16(WindowTypeShelfItem::GetDetails(type_));
	set_details(details);
	Tags details_tags;
	details_tags.push_back(Tag(Tag::DIM, 0, details.length()));
	set_details_tags(details_tags);
	}

	WindowTypeShelfItem::Type type() const { return type_; }

	private:
	WindowTypeShelfItem::Type type_;

	DISALLOW_COPY_AND_ASSIGN(ExampleSearchResult);
	};

	class ExampleAppListViewDelegate : public app_list::AppListViewDelegate {
	public:
	ExampleAppListViewDelegate()
	: model_(std::make_unique<app_list::AppListModel>()),
	search_model_(std::make_unique<app_list::SearchModel>()) {
	PopulateApps();
	DecorateSearchBox(search_model_->search_box());
	}

	private:
	void PopulateApps() {
	for (int i = 0; i < static_cast<int>(WindowTypeShelfItem::LAST_TYPE); ++i) {
	WindowTypeShelfItem::Type type =
	static_cast<WindowTypeShelfItem::Type>(i);
	std::string id = base::IntToString(i);
	std::unique_ptr<WindowTypeShelfItem> shelf_item(
	new WindowTypeShelfItem(id, type));
	model_->AddItem(std::move(shelf_item));
	}
	}

	void DecorateSearchBox(app_list::SearchBoxModel* search_box_model) {
	search_box_model->SetHintText(base::ASCIIToUTF16("Type to search..."));
	}

	// Overridden from app_list::AppListViewDelegate:
	app_list::AppListModel* GetModel() override { return model_.get(); }

	app_list::SearchModel* GetSearchModel() override {
	return search_model_.get();
	}

	void OpenSearchResult(const std::string& result_id,
	int event_flags) override {
	const ExampleSearchResult* example_result =
	static_cast<const ExampleSearchResult*>(
	search_model_->FindSearchResult(result_id));
	WindowTypeShelfItem::ActivateItem(example_result->type(), event_flags);
	}

	void InvokeSearchResultAction(const std::string& result_id,
	int action_index,
	int event_flags) override {
	NOTIMPLEMENTED();
	}

	void StartAssistant() override { NOTIMPLEMENTED(); }

	void StartSearch(const base::string16& raw_query) override {
	base::string16 query;
	base::TrimWhitespace(raw_query, base::TRIM_ALL, &query);
	query = base::i18n::ToLower(query);

	search_model_->results()->DeleteAll();
	if (query.empty())
	return;

	for (int i = 0; i < static_cast<int>(WindowTypeShelfItem::LAST_TYPE); ++i) {
	WindowTypeShelfItem::Type type =
	static_cast<WindowTypeShelfItem::Type>(i);

	base::string16 title =
	base::UTF8ToUTF16(WindowTypeShelfItem::GetTitle(type));
	if (base::i18n::StringSearchIgnoringCaseAndAccents(query, title, NULL,
	NULL)) {
	search_model_->results()->Add(
	std::make_unique<ExampleSearchResult>(type, query));
	}
	}
	}

	void ViewShown(int64_t display_id) override {
	// Nothing needs to be done.
	}

	void DismissAppList() override {
	Shell::Get()->app_list_controller()->DismissAppList();
	}

	void ViewClosing() override {
	// Nothing needs to be done.
	}

	void ViewClosed() override {
	// Nothing needs to be done.
	}

	void GetWallpaperProminentColors(
	GetWallpaperProminentColorsCallback callback) override {
	NOTIMPLEMENTED();
	}

	void ActivateItem(const std::string& id, int event_flags) override {
	WindowTypeShelfItem* item =
	static_cast<WindowTypeShelfItem*>(model_->FindItem(id));
	if (!item)
	return;
	item->Activate(event_flags);
	}

	void GetContextMenuModel(const std::string& id,
	GetContextMenuModelCallback callback) override {
	NOTIMPLEMENTED();
	}

	void GetSearchResultContextMenuModel(
	const std::string& result_id,
	GetContextMenuModelCallback callback) override {
	NOTIMPLEMENTED();
	}

	void ContextMenuItemSelected(const std::string& id,
	int command_id,
	int event_flags) override {
	NOTIMPLEMENTED();
	}

	void ShowWallpaperContextMenu(const gfx::Point& onscreen_location,
	ui::MenuSourceType source_type) override {
	NOTIMPLEMENTED();
	}

	void SearchResultContextMenuItemSelected(const std::string& result_id,
	int command_id,
	int event_flags) override {
	NOTIMPLEMENTED();
	}

	bool ProcessHomeLauncherGesture(ui::GestureEvent* event,
	const gfx::Point& screen_location) override {
	NOTIMPLEMENTED();
	return false;
	}

	bool CanProcessEventsOnApplistViews() override {
	NOTIMPLEMENTED();
	return true;
	}

	void GetNavigableContentsFactory(
	content::mojom::NavigableContentsFactoryRequest request) override {
	NOTIMPLEMENTED();
	}

	std::unique_ptr<app_list::AppListModel> model_;
	std::unique_ptr<app_list::SearchModel> search_model_;

	DISALLOW_COPY_AND_ASSIGN(ExampleAppListViewDelegate);
	};

	} // namespace

	app_list::AppListViewDelegate* CreateAppListViewDelegate() {
	return new ExampleAppListViewDelegate;
	}

	} // namespace shell
	} // namespace ash