/*

     File: OptionsController.m

 Abstract: Controller to set various debugging options.

  Version: 1.1

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 */

#import "OptionsController.h"

// OptionCell is a trivial subclass of UITableViewCell that allows us 

// to set the option key in IB via the "user defined runtime attributes" 

// inspector.

@interface OptionCell : UITableViewCell

@property (nonatomic, copy,   readwrite) NSString * optionKey;

@end

@implementation OptionCell

@end

@interface OptionsController ()

@property (nonatomic, strong, readwrite) IBOutletCollection(OptionCell) NSArray *   optionCells;

@property (nonatomic, strong, readwrite) NSMutableDictionary *      currentState;    // NSString -> NSNumber (Boolean)

@end

@implementation OptionsController

- (void)viewDidLoad

{

    NSUserDefaults *    defaults;

    [super viewDidLoad];

    self.currentState = [[NSMutableDictionary alloc] init];

    assert(self.currentState != nil);

    defaults = [NSUserDefaults standardUserDefaults];

    for (OptionCell * cell in self.optionCells) {

        BOOL        optionEnabled;

        optionEnabled = [defaults boolForKey:cell.optionKey];

        self.currentState[cell.optionKey] = @(optionEnabled);

        cell.accessoryType = optionEnabled ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;

    }

}

- (void)tableView:(UITableView *)tv didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    #pragma unused(tv)

    #pragma unused(indexPath)

    OptionCell *        cell;

    BOOL                optionEnabled;

    assert(tv == self.tableView);

    assert(indexPath != NULL);

    cell = (OptionCell *) [self.tableView cellForRowAtIndexPath:indexPath];

    assert([cell isKindOfClass:[OptionCell class]]);

    optionEnabled = ! [self.currentState[cell.optionKey] boolValue];

    self.currentState[cell.optionKey] = @(optionEnabled);

    cell.accessoryType  = optionEnabled ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;

    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];

}

- (IBAction)saveAction:(id)sender

{

    #pragma unused(sender)

    NSUserDefaults *                defaults;

    id<OptionsControllerDelegate>   strongDelegate;

    // Commit the options to the user defaults.

    defaults = [NSUserDefaults standardUserDefaults];

    assert(defaults != nil);

    for (NSString * key in self.currentState) {

        [defaults setObject:self.currentState[key] forKey:key];

    }

    [defaults synchronize];

    // Tell the delegate about the save.

    strongDelegate = self.delegate;

    [strongDelegate didSaveOptions:self];

}

- (IBAction)cancelAction:(id)sender

{

    #pragma unused(sender)

    id<OptionsControllerDelegate>   strongDelegate;

    // Tell the delegate about the cancellation.

    strongDelegate = self.delegate;

    [strongDelegate didCancelOptions:self];

}

@end