MacPass/MacPass/MPDatabaseController.m

//
//  MPDatabaseController.m
//  MacPass
//
//  Created by michael starke on 13.02.13.
//  Copyright (c) 2013 HicknHack Software GmbH. All rights reserved.
//

#import "MPDatabaseController.h"
#import "MPDatabaseDocument.h"

NSString *const MPDatabaseControllerDidLoadDatabaseNotification = @"com.macpass.MPDatabaseControllerDidLoadDatabaseNotification";
NSString *const MPDatabaseControllerDidCloseDatabaseNotification = @"com.macpass.MPDatabaseControllerDidCloseDatabaseNotification";
NSString *const MPDatabaseControllerDatabaseKey = @"com.macpass.MPDatabaseControllerDatabaseKey";

@interface MPDatabaseController ()

@property (retain) MPDatabaseDocument *database;

@end

@implementation MPDatabaseController

+ (MPDatabaseController *)defaultController {
  static MPDatabaseController *sharedInstance = nil;
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    sharedInstance = [[MPDatabaseController alloc] init];
  });
  
  return sharedInstance;
}

+ (BOOL)hasOpenDatabase {
  return (nil != [MPDatabaseController defaultController].database);
}

- (id)init
{
  self = [super init];
  if (self) {
    // nothing to do;
  }
  return self;
}

- (void)dealloc {
  self.database = nil;
  [super dealloc];
}

- (MPDatabaseDocument *)createDatabase:(MPDatabaseVersion)version password:(NSString *)password keyfile:(NSURL *)key {
  return self.database;
}

- (MPDatabaseDocument *)newDatabaseAtURL:(NSURL *)url databaseVersion:(MPDatabaseVersion)version password:(NSString *)password keyfile:(NSURL *)key {
  self.database = [MPDatabaseDocument newDocumentAtURL:url databaseVersion:version password:password keyfile:key];
  return self.database;
}

- (MPDatabaseDocument *)openDatabase:(NSURL *)file password:(NSString *)password keyfile:(NSURL *)key {
  self.database = [MPDatabaseDocument documentWithFile:file password:password keyfile:key];
  return self.database;
}

- (void)setDatabase:(MPDatabaseDocument *)database {
  if(_database != database) {
    if(_database) {
      NSDictionary *userInfo = @{ MPDatabaseControllerDatabaseKey: _database };
      [[NSNotificationCenter defaultCenter] postNotificationName:MPDatabaseControllerDidCloseDatabaseNotification
                                                          object:self
                                                        userInfo:userInfo];
    }
    [_database release];
    _database = [database retain];
    if(database) {
      NSDictionary *userInfo = @{ MPDatabaseControllerDatabaseKey: _database };
      [[NSNotificationCenter defaultCenter] postNotificationName:MPDatabaseControllerDidLoadDatabaseNotification
                                                          object:self
                                                        userInfo:userInfo];
    }
  }
}

@end