Pull class AppMetaMimeCreator out of CreateAppMetaMimeThread

Instead of using a BMimeType to set the MIME type properties, it
operates directly on the Database object, though.

headers/private/storage/mime/AppMetaMimeCreator.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2013, Haiku, Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Ingo Weinhold <[email protected]>
+ */
+#ifndef _MIME_APP_META_MIME_CREATOR_H
+#define _MIME_APP_META_MIME_CREATOR_H
+
+
+#include <SupportDefs.h>
+
+#include <MergedDirectory.h>
+
+
+struct entry_ref;
+
+
+namespace BPrivate {
+namespace Storage {
+namespace Mime {
+
+
+class Database;
+
+
+class AppMetaMimeCreator {
+public:
+			class DatabaseLocker;
+
+public:
+								AppMetaMimeCreator(Database* database,
+									DatabaseLocker* databaseLocker,
+						   			int32 force);
+								~AppMetaMimeCreator();
+
+			status_t			Do(const entry_ref& entry, bool* _entryIsDir);
+
+private:
+			Database*			fDatabase;
+			DatabaseLocker*		fDatabaseLocker;
+			int32				fForce;
+
+};
+
+
+class AppMetaMimeCreator::DatabaseLocker {
+public:
+	virtual						~DatabaseLocker();
+
+	virtual	bool				Lock() = 0;
+	virtual	void				Unlock() = 0;
+};
+
+
+} // namespace Mime
+} // namespace Storage
+} // namespace BPrivate
+
+
+#endif	// _MIME_APP_META_MIME_CREATOR_H