the whole game

project/lib_projects/InAppSettingsKit/Controllers/IASKSpecifierValuesViewController.m

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+//
+//  IASKSpecifierValuesViewController.m
+//  http://www.inappsettingskit.com
+//
+//  Copyright (c) 2009:
+//  Luc Vandal, Edovia Inc., http://www.edovia.com
+//  Ortwin Gentz, FutureTap GmbH, http://www.futuretap.com
+//  All rights reserved.
+// 
+//  It is appreciated but not required that you give credit to Luc Vandal and Ortwin Gentz, 
+//  as the original authors of this code. You can give credit in a blog post, a tweet or on 
+//  a info page of your app. Also, the original authors appreciate letting them know if you use this code.
+//
+//  This code is licensed under the BSD license that is available at: http://www.opensource.org/licenses/bsd-license.php
+//
+
+#import "IASKSpecifierValuesViewController.h"
+#import "IASKSpecifier.h"
+#import "IASKSettingsReader.h"
+#import "IASKSettingsStoreUserDefaults.h"
+
+#define kCellValue      @"kCellValue"
+
+@interface IASKSpecifierValuesViewController()
+- (void)userDefaultsDidChange;
+@end
+
+@implementation IASKSpecifierValuesViewController
+
+@synthesize tableView=_tableView;
+@synthesize currentSpecifier=_currentSpecifier;
+@synthesize checkedItem=_checkedItem;
+@synthesize settingsReader = _settingsReader;
+@synthesize settingsStore = _settingsStore;
+
+- (void) updateCheckedItem {
+    NSInteger index;
+	
+	// Find the currently checked item
+    if([self.settingsStore objectForKey:[_currentSpecifier key]]) {
+      index = [[_currentSpecifier multipleValues] indexOfObject:[self.settingsStore objectForKey:[_currentSpecifier key]]];
+    } else {
+      index = [[_currentSpecifier multipleValues] indexOfObject:[_currentSpecifier defaultValue]];
+    }
+	[self setCheckedItem:[NSIndexPath indexPathForRow:index inSection:0]];
+}
+
+- (id<IASKSettingsStore>)settingsStore {
+    if(_settingsStore == nil) {
+        _settingsStore = [[IASKSettingsStoreUserDefaults alloc] init];
+    }
+    return _settingsStore;
+}
+
+- (void)viewWillAppear:(BOOL)animated {
+    if (_currentSpecifier) {
+        [self setTitle:[_currentSpecifier title]];
+        [self updateCheckedItem];
+    }
+    
+    if (_tableView) {
+        [_tableView reloadData];
+
+		// Make sure the currently checked item is visible
+        [_tableView scrollToRowAtIndexPath:[self checkedItem] atScrollPosition:UITableViewScrollPositionMiddle animated:NO];
+    }
+	[super viewWillAppear:animated];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+	[_tableView flashScrollIndicators];
+	[super viewDidAppear:animated];
+	[[NSNotificationCenter defaultCenter] addObserver:self
+											 selector:@selector(userDefaultsDidChange)
+												 name:NSUserDefaultsDidChangeNotification
+											   object:[NSUserDefaults standardUserDefaults]];
+}
+
+- (void)viewDidDisappear:(BOOL)animated {
+	[[NSNotificationCenter defaultCenter] removeObserver:self name:NSUserDefaultsDidChangeNotification object:nil];
+	[super viewDidDisappear:animated];
+}
+
+
+- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
+	return YES;
+}
+
+- (void)didReceiveMemoryWarning {
+	// Releases the view if it doesn't have a superview.
+    [super didReceiveMemoryWarning];
+	
+	// Release any cached data, images, etc that aren't in use.
+}
+
+- (void)viewDidUnload {
+	// Release any retained subviews of the main view.
+	// e.g. self.myOutlet = nil;
+	self.tableView = nil;
+}
+
+
+- (void)dealloc {
+    [_currentSpecifier release], _currentSpecifier = nil;
+	[_checkedItem release], _checkedItem = nil;
+	[_settingsReader release], _settingsReader = nil;
+    [_settingsStore release], _settingsStore = nil;
+	[_tableView release], _tableView = nil;
+    [super dealloc];
+}
+
+
+#pragma mark -
+#pragma mark UITableView delegates
+
+- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
+	return 1;
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
+    return [_currentSpecifier multipleValuesCount];
+}
+
+- (void)selectCell:(UITableViewCell *)cell {
+	[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
+	[[cell textLabel] setTextColor:kIASKgrayBlueColor];
+}
+
+- (void)deselectCell:(UITableViewCell *)cell {
+	[cell setAccessoryType:UITableViewCellAccessoryNone];
+	[[cell textLabel] setTextColor:[UIColor darkTextColor]];
+}
+
+- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section {
+    return [_currentSpecifier footerText];
+}
+
+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+    UITableViewCell *cell   = [tableView dequeueReusableCellWithIdentifier:kCellValue];
+    NSArray *titles         = [_currentSpecifier multipleTitles];
+	
+    if (!cell) {
+        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellValue] autorelease];
+		cell.backgroundColor = [UIColor whiteColor];
+    }
+	
+	if ([indexPath isEqual:[self checkedItem]]) {
+		[self selectCell:cell];
+    } else {
+        [self deselectCell:cell];
+    }
+	
+	@try {
+		[[cell textLabel] setText:[self.settingsReader titleForStringId:[titles objectAtIndex:indexPath.row]]];
+	}
+	@catch (NSException * e) {}
+    return cell;
+}
+
+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
+	
+    if (indexPath == [self checkedItem]) {
+        [tableView deselectRowAtIndexPath:indexPath animated:YES];
+        return;
+    }
+    
+    NSArray *values         = [_currentSpecifier multipleValues];
+    
+    [tableView deselectRowAtIndexPath:indexPath animated:YES];
+    [self deselectCell:[tableView cellForRowAtIndexPath:[self checkedItem]]];
+    [self selectCell:[tableView cellForRowAtIndexPath:indexPath]];
+    [self setCheckedItem:indexPath];
+	
+    [self.settingsStore setObject:[values objectAtIndex:indexPath.row] forKey:[_currentSpecifier key]];
+	[self.settingsStore synchronize];
+    [[NSNotificationCenter defaultCenter] postNotificationName:kIASKAppSettingChanged
+                                                        object:[_currentSpecifier key]
+                                                      userInfo:[NSDictionary dictionaryWithObject:[values objectAtIndex:indexPath.row]
+                                                                                           forKey:[_currentSpecifier key]]];
+}
+
+#pragma mark Notifications
+
+- (void)userDefaultsDidChange {
+	NSIndexPath *oldCheckedItem = self.checkedItem;
+	if(_currentSpecifier) {
+		[self updateCheckedItem];
+	}
+	
+	// only reload the table if it had changed; prevents animation cancellation
+	if (self.checkedItem != oldCheckedItem) {
+		[_tableView reloadData];
+	}
+}
+
+@end