Profiles: Move the Spelling system onto a ProfileKeyedServiceFactory.

chrome/browser/spellchecker/spellcheck_factory.h

+// 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 CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_FACTORY_H_
+#define CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_FACTORY_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/memory/singleton.h"
+#include "chrome/browser/profiles/profile_keyed_service_factory.h"
+
+class SpellCheckHost;
+class SpellCheckProfile;
+
+// Entry into the SpellCheck system.
+//
+// Internally, this owns all SpellCheckProfile objects, but these aren't
+// exposed to the callers. Instead, the SpellCheckProfile may or may not hand
+// out SpellCheckHost objects for consumption outside the SpellCheck system.
+class SpellCheckFactory : public ProfileKeyedServiceFactory {
+ public:
+  // Returns the spell check host. This may be NULL.
+  static SpellCheckHost* GetHostForProfile(Profile* profile);
+
+  // If |force| is false, and the spellchecker is already initialized (or is in
+  // the process of initializing), then do nothing. Otherwise clobber the
+  // current spellchecker and replace it with a new one.
+  static void ReinitializeSpellCheckHost(Profile* profile, bool force);
+
+  static SpellCheckFactory* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<SpellCheckFactory>;
+
+  SpellCheckFactory();
+  virtual ~SpellCheckFactory();
+
+  // Fetches the internal object for |profile|.
+  SpellCheckProfile* GetSpellCheckProfile(Profile* profile);
+
+  // ProfileKeyedServiceFactory:
+  virtual ProfileKeyedService* BuildServiceInstanceFor(
+      Profile* profile) const OVERRIDE;
+  virtual void RegisterUserPrefs(PrefService* user_prefs) OVERRIDE;
+  virtual bool ServiceRedirectedInIncognito() OVERRIDE;
+  virtual bool ServiceIsNULLWhileTesting() OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(SpellCheckFactory);
+};
+
+#endif  // CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_FACTORY_H_