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// 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.
#ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
#pragma once
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/autocomplete/autocomplete_controller_delegate.h"
#include "chrome/browser/prefs/pref_change_registrar.h"
#include "chrome/browser/prefs/pref_member.h"
#include "chrome/browser/search_engines/template_url_service_observer.h"
#include "chrome/browser/shell_integration.h"
#include "chrome/browser/ui/webui/options/options_ui.h"
#include "ui/base/models/table_model_observer.h"
class AutocompleteController;
class CustomHomePagesTableModel;
class TemplateURLService;
// Chrome browser options page UI handler.
class BrowserOptionsHandler : public OptionsPageUIHandler,
public AutocompleteControllerDelegate,
public ShellIntegration::DefaultWebClientObserver,
public TemplateURLServiceObserver,
public ui::TableModelObserver {
public:
BrowserOptionsHandler();
virtual ~BrowserOptionsHandler();
virtual void Initialize();
// OptionsPageUIHandler implementation.
virtual void GetLocalizedValues(DictionaryValue* localized_strings) OVERRIDE;
virtual void RegisterMessages() OVERRIDE;
// AutocompleteControllerDelegate implementation.
virtual void OnResultChanged(bool default_match_changed) OVERRIDE;
// ShellIntegration::DefaultWebClientObserver implementation.
virtual void SetDefaultWebClientUIState(
ShellIntegration::DefaultWebClientUIState state) OVERRIDE;
// TemplateURLServiceObserver implementation.
virtual void OnTemplateURLServiceChanged() OVERRIDE;
// ui::TableModelObserver implementation.
virtual void OnModelChanged() OVERRIDE;
virtual void OnItemsChanged(int start, int length) OVERRIDE;
virtual void OnItemsAdded(int start, int length) OVERRIDE;
virtual void OnItemsRemoved(int start, int length) OVERRIDE;
private:
// NotificationObserver implementation.
virtual void Observe(int type,
const NotificationSource& source,
const NotificationDetails& details) OVERRIDE;
// Makes this the default browser. Called from WebUI.
void BecomeDefaultBrowser(const ListValue* args);
// Sets the search engine at the given index to be default. Called from WebUI.
void SetDefaultSearchEngine(const ListValue* args);
// Removes the startup page at the given indexes. Called from WebUI.
void RemoveStartupPages(const ListValue* args);
// Adds a startup page with the given URL after the given index.
// Called from WebUI.
void AddStartupPage(const ListValue* args);
// Changes the startup page at the given index to the given URL.
// Called from WebUI.
void EditStartupPage(const ListValue* args);
// Sets the startup page set to the current pages. Called from WebUI.
void SetStartupPagesToCurrentPages(const ListValue* args);
// Writes the current set of startup pages to prefs. Called from WebUI.
void DragDropStartupPage(const ListValue* args);
// Gets autocomplete suggestions asychronously for the given string.
// Called from WebUI.
void RequestAutocompleteSuggestions(const ListValue* args);
// Enables/disables Instant.
void EnableInstant(const ListValue* args);
void DisableInstant(const ListValue* args);
// Called to request information about the Instant field trial.
void GetInstantFieldTrialStatus(const ListValue* args);
// Returns the string ID for the given default browser state.
int StatusStringIdForState(ShellIntegration::DefaultWebClientState state);
// Gets the current default browser state, and asynchronously reports it to
// the WebUI page.
void UpdateDefaultBrowserState();
// Updates the UI with the given state for the default browser.
void SetDefaultBrowserUIString(int status_string_id);
// Loads the current set of custom startup pages and reports it to the WebUI.
void UpdateStartupPages();
// Loads the possible default search engine list and reports it to the WebUI.
void UpdateSearchEngines();
// Writes the current set of startup pages to prefs.
void SaveStartupPagesPref();
scoped_refptr<ShellIntegration::DefaultBrowserWorker>
default_browser_worker_;
StringPrefMember homepage_;
BooleanPrefMember default_browser_policy_;
// Used to observe updates to the preference of the list of URLs to load
// on startup, which can be updated via sync.
PrefChangeRegistrar pref_change_registrar_;
TemplateURLService* template_url_service_; // Weak.
// TODO(stuartmorgan): Once there are no other clients of
// CustomHomePagesTableModel, consider changing it to something more like
// TemplateURLService.
scoped_ptr<CustomHomePagesTableModel> startup_custom_pages_table_model_;
scoped_ptr<AutocompleteController> autocomplete_controller_;
DISALLOW_COPY_AND_ASSIGN(BrowserOptionsHandler);
};
#endif // CHROME_BROWSER_UI_WEBUI_OPTIONS_BROWSER_OPTIONS_HANDLER_H_
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