menu-clock-macos/Clocker/Preferences/CLPreferencesViewController.m

//
//  CLPreferencesViewController.m
//  Clocker
//
//  Created by Abhishek Banthia on 12/12/15.
//
//

#import "CLPreferencesViewController.h"
#import "Panel.h"
#import "PanelController.h"
#import "ApplicationDelegate.h"
#import <QuartzCore/QuartzCore.h>
#import "CommonStrings.h"
#import "CLTimezoneData.h"
#import <Parse/Parse.h>
#import "CLAPI.h"
#import <ServiceManagement/ServiceManagement.h>

NSString *const CLSearchPredicateKey = @"SELF CONTAINS[cd]%@";
NSString *const CLPreferencesViewNibIdentifier = @"PreferencesWindow";
NSString *const CLPreferencesTimezoneNameIdentifier = @"formattedAddress";
NSString *const CLPreferencesAbbreviationIdentifier = @"abbreviation";
NSString *const CLPreferencesCustomLabelIdentifier = @"label";
NSString *const CLPreferencesAvailableTimezoneIdentifier = @"availableTimezones";
NSString *const CLNoTimezoneSelectedErrorMessage =  @"Please select a timezone!";
NSString *const CLMaxTimezonesErrorMessage =  @"Maximum 10 timezones allowed!";
NSString *const CLTimezoneAlreadySelectedError = @"Timezone has already been selected!";
NSString *const CLParseTimezoneSelectionClassIdentifier = @"CLTimezoneSelection";
NSString *const CLParseTimezoneNameProperty = @"areaName";
NSString *const CLMaxCharactersReachedError = @"Only 50 characters allowed!";
NSString *const CLNoInternetConnectivityError = @"You're offline, maybe?";
NSString *const CLLocationSearchURL = @"https://maps.googleapis.com/maps/api/geocode/json?address=%@&key=AIzaSyCyf2knCi6KiKuDJLYDBD3Odq5dt4c-_KI";
NSString *const CLTimezoneSearchURL = @"https://maps.googleapis.com/maps/api/timezone/json?location=%@&timestamp=%f&key=AIzaSyCyf2knCi6KiKuDJLYDBD3Odq5dt4c-_KI";
NSString *const CLTryAgainMessage = @"Try again, maybe?";

@interface CLPreferencesViewController ()
@property (weak) IBOutlet NSTextField *placeholderLabel;
@property (assign) BOOL activityInProgress;

@property (weak) IBOutlet NSTableView *timezoneTableView;
@property (strong) IBOutlet Panel *timezonePanel;
@property (weak) IBOutlet NSTableView *availableTimezoneTableView;
@property (weak) IBOutlet NSSearchField *searchField;
@property (weak) IBOutlet NSTextField *messageLabel;
@property (weak) IBOutlet NSSegmentedControl *searchCriteria;
@property (weak) IBOutlet NSTableColumn *abbreviation;

@end

@implementation CLPreferencesViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    CALayer *viewLayer = [CALayer layer];
    [viewLayer setBackgroundColor:CGColorCreateGenericRGB(255.0, 255.0, 255.0, 0.8)]; //RGB plus Alpha Channel
    [self.view setWantsLayer:YES];
    [self.view setLayer:viewLayer];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(refereshTimezoneTableView) name:CLCustomLabelChangedNotification object:nil];
    self.placeholderLabel.hidden = YES;
    
    [self refereshTimezoneTableView];
    
    if (!self.filteredArray)
    {
        self.timeZoneArray = [[NSMutableArray alloc] initWithArray:[NSTimeZone knownTimeZoneNames]];
        self.timeZoneFilteredArray = [NSMutableArray new];
        self.filteredArray = [NSMutableArray new];
    }
    
    self.messageLabel.stringValue = CLEmptyString;

    [self.availableTimezoneTableView reloadData];
    
    //Register for drag and drop
    [self.timezoneTableView registerForDraggedTypes: [NSArray arrayWithObject: CLDragSessionKey]];
    
    self.columnName = @"Place(s)";
        // Do view setup here.
}


-(void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:CLCustomLabelChangedNotification object:nil];
}


-(BOOL)acceptsFirstResponder
{
    return YES;
}

-(NSInteger)numberOfRowsInTableView:(NSTableView *)tableView
{
    if (tableView == self.timezoneTableView)
    {
        return self.selectedTimeZones.count;
    }
    else
    {
        NSInteger searchCriteria = [self.searchCriteria selectedSegment];
        
        if (searchCriteria == 0) {
             return self.filteredArray.count;
        }
        else
        {
            if (self.searchField.stringValue.length > 0) {
                return self.timeZoneFilteredArray.count;
            }
            return self.timeZoneArray.count;
        }
    }

    return 0;
}

- (nullable id)tableView:(NSTableView *)tableView objectValueForTableColumn:(nullable NSTableColumn *)tableColumn row:(NSInteger)row
{
    CLTimezoneData *dataSource, *selectedDataSource;
    
    if (self.filteredArray.count > row)
    {
         dataSource = self.filteredArray[row];
    }
    
    if (self.selectedTimeZones.count > row) {
          selectedDataSource = [CLTimezoneData getCustomObject:self.selectedTimeZones[row]];
    }
  
    
    
    if ([[tableColumn identifier] isEqualToString:CLPreferencesTimezoneNameIdentifier])
    {
        if ([selectedDataSource.formattedAddress length] > 0) {
           return selectedDataSource.formattedAddress;
        }
        return selectedDataSource.timezoneID;
    }
    else if([[tableColumn identifier] isEqualToString:CLPreferencesAvailableTimezoneIdentifier])
    {
        NSInteger searchCriteria = [self.searchCriteria selectedSegment];
        
        if (searchCriteria == 0)
        {
            if (row < self.filteredArray.count)
            {
                return dataSource.formattedAddress;
            }

        }
        else
        {
            if (self.searchField.stringValue.length > 0)
            {
                if (row < self.timeZoneFilteredArray.count) {
                    return self.timeZoneFilteredArray[row];
                }
            }
            
            return self.timeZoneArray[row];

        }
        
        return nil;
    }
    else if([[tableColumn identifier] isEqualToString:CLPreferencesCustomLabelIdentifier])
    {
        return selectedDataSource.customLabel;
    }
    else if ([tableColumn.identifier isEqualToString:@"favouriteTimezone"])
    {
        return selectedDataSource.isFavourite;
    }
    else if ([tableColumn.identifier isEqualToString:@"abbreviation"])
    {
        if (self.searchField.stringValue.length > 0)
        {
            if (row < self.timeZoneFilteredArray.count)
            {
                return [NSTimeZone timeZoneWithName:self.timeZoneFilteredArray[row]].abbreviation;
            }
            
        }
        
        return [NSTimeZone timeZoneWithName:self.timeZoneArray[row]].abbreviation;

    }
    
    return nil;
    
}

-(void)tableView:(NSTableView *)tableView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row
{
    if ([object isKindOfClass:[NSString class]])
    {
        
        NSString *originalValue = (NSString *)object;
        NSString *customLabelValue = [originalValue stringByTrimmingCharactersInSet:
                            [NSCharacterSet whitespaceCharacterSet]];
        
        CLTimezoneData *dataObject = [CLTimezoneData getCustomObject:self.selectedTimeZones[row]];
        dataObject.customLabel = customLabelValue.length > 0 ? customLabelValue : CLEmptyString;
        NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:dataObject];
        [self.selectedTimeZones replaceObjectAtIndex:row withObject:encodedObject];
        [[NSUserDefaults standardUserDefaults] setObject:self.selectedTimeZones forKey:CLDefaultPreferenceKey];
        
        [self refreshMainTableview];
    }
    else
    {
        NSMutableArray *newArray = [NSMutableArray new];
        
        for (NSData *object in self.selectedTimeZones)
        {
            CLTimezoneData *timezone = [CLTimezoneData getCustomObject:object];
            timezone.isFavourite = [NSNumber numberWithInt:0];
             NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:timezone];
            [newArray addObject:encodedObject];
        }
        
        CLTimezoneData *dataObject = [CLTimezoneData getCustomObject:newArray[row]];
        dataObject.isFavourite = object;
        NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:dataObject];
        [newArray replaceObjectAtIndex:row withObject:encodedObject];
        self.selectedTimeZones = [NSMutableArray arrayWithArray:newArray];
         [[NSUserDefaults standardUserDefaults] setObject:self.selectedTimeZones forKey:CLDefaultPreferenceKey];
        
      
        (dataObject.isFavourite.integerValue == 1) ?
        [[NSUserDefaults standardUserDefaults] setObject:encodedObject
                                                  forKey:@"favouriteTimezone"]:
        [[NSUserDefaults standardUserDefaults] setObject:nil
                                                  forKey:@"favouriteTimezone"];
        
        [self.timezoneTableView reloadData];
    }
}

- (IBAction)addTimeZone:(id)sender
{
    self.abbreviation.hidden = YES;
    
    self.filteredArray = [NSMutableArray new];
    
    self.searchCriteria.selectedSegment = 0;
    
    self.timeZoneArray = [NSMutableArray new];
    
    [self.view.window beginSheet:self.timezonePanel
               completionHandler:nil];
}

- (IBAction)addToFavorites:(id)sender
{
    self.activityInProgress = YES;

    if (self.availableTimezoneTableView.selectedRow == -1)
    {
        self.messageLabel.stringValue = CLNoTimezoneSelectedErrorMessage;
        [NSTimer scheduledTimerWithTimeInterval:5 target:self
                                       selector:@selector(clearLabel)
                                       userInfo:nil
                                        repeats:NO];
        self.activityInProgress = NO;
        return;
    }
    
    if (self.selectedTimeZones.count >= 10)
    {
        self.messageLabel.stringValue = CLMaxTimezonesErrorMessage;
        [NSTimer scheduledTimerWithTimeInterval:5 target:self
                                       selector:@selector(clearLabel)
                                       userInfo:nil
                                        repeats:NO];
        self.activityInProgress = NO;
        return;
    }
    
    
    if (self.searchCriteria.selectedSegment == 0)
    {
        CLTimezoneData *dataObject = self.filteredArray[self.availableTimezoneTableView.selectedRow];
        
        for (NSData *encodedData in self.selectedTimeZones)
        {
            
            CLTimezoneData *timezoneObject = [CLTimezoneData getCustomObject:encodedData];
            NSString *name = timezoneObject.place_id;
            NSString *selectedPlaceID = dataObject.place_id;
            
            if (self.searchField.stringValue.length > 0) {
                if ([name isKindOfClass:[NSString class]] &&
                    [name isEqualToString:selectedPlaceID])
                {
                    self.messageLabel.stringValue = CLTimezoneAlreadySelectedError;
                    [NSTimer scheduledTimerWithTimeInterval:5
                                                     target:self
                                                   selector:@selector(clearLabel) userInfo:nil
                                                    repeats:NO];
                    self.activityInProgress = NO;
                    return;
                }
            }
        }
        
        self.searchField.stringValue = CLEmptyString;
        
        [self getTimeZoneForLatitude:dataObject.latitude
                        andLongitude:dataObject.longitude];
    }
    else
    {
        CLTimezoneData *data = [CLTimezoneData new];
        data.isFavourite = [NSNumber numberWithInt:NSOffState];
        data.customLabel = CLEmptyString;
        
        if (self.searchField.stringValue.length > 0)
        {
            data.timezoneID = self.timeZoneFilteredArray[self.availableTimezoneTableView.selectedRow];
            data.formattedAddress = self.timeZoneFilteredArray[self.availableTimezoneTableView.selectedRow];
        }
        else
        {
            data.timezoneID = self.timeZoneArray[self.availableTimezoneTableView.selectedRow];
            data.formattedAddress = self.timeZoneArray[self.availableTimezoneTableView.selectedRow];
        }
        
        NSArray *defaultPreference = [[NSUserDefaults standardUserDefaults] objectForKey:CLDefaultPreferenceKey];
        
        if (defaultPreference == nil)
        {
            defaultPreference = [[NSMutableArray alloc] init];
        }
        
        NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:data];
        NSMutableArray *newArray = [[NSMutableArray alloc] initWithArray:defaultPreference];
        [newArray addObject:encodedObject];
        
        [[NSUserDefaults standardUserDefaults] setObject:newArray forKey:CLDefaultPreferenceKey];
        
        self.timeZoneArray = [NSMutableArray array];
        
        self.timeZoneFilteredArray = [NSMutableArray array];
        
        [self.availableTimezoneTableView reloadData];
        
        [self refereshTimezoneTableView];
        
        [self refreshMainTableview];
        
        [self.timezonePanel close];
        
        self.placeholderLabel.placeholderString = CLEmptyString;
        
        self.searchField.stringValue = CLEmptyString;
        
        self.searchField.placeholderString = @"Enter a city, state or country name";
        
        self.availableTimezoneTableView.hidden = NO;
        
        self.activityInProgress = NO;
    }
}

- (IBAction)closePanel:(id)sender
{
    self.filteredArray = [NSMutableArray array];
    self.timeZoneArray = [NSMutableArray new];
    self.searchCriteria.selectedSegment = 0;
    self.columnName = @"Place(s)";
    self.placeholderLabel.placeholderString = CLEmptyString;
    [self.availableTimezoneTableView reloadData];
    self.searchField.stringValue = CLEmptyString;
    self.searchField.placeholderString = @"Enter a city, state or country name";
    [self.timezonePanel close];
    self.activityInProgress = NO;
}

- (void)clearLabel
{
    self.messageLabel.stringValue = CLEmptyString;
}

- (IBAction)removeFromFavourites:(id)sender
{
    NSMutableArray *itemsToRemove = [NSMutableArray array];
    
    if (self.timezoneTableView.selectedRow == -1)
    {
        return;
    }
    
    [self.timezoneTableView.selectedRowIndexes enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL * _Nonnull stop) {
        
        [itemsToRemove addObject:self.selectedTimeZones[idx]];
        
    }];
    
    [self.selectedTimeZones removeObjectsInArray:itemsToRemove];
    
    NSMutableArray *newDefaults = [[NSMutableArray alloc] initWithArray:self.selectedTimeZones];
    
    [[NSUserDefaults standardUserDefaults] setObject:newDefaults forKey:CLDefaultPreferenceKey];
    
    [self.timezoneTableView reloadData];
    
    [self refreshMainTableview];
}

- (IBAction)filterTimezoneArray:(id)sender
{
    if (self.searchField.stringValue.length > 0) {
    NSPredicate *predicate = [NSPredicate predicateWithFormat:CLSearchPredicateKey, self.searchField.stringValue];
    
    self.timeZoneFilteredArray = [NSMutableArray arrayWithArray:[self.timeZoneArray filteredArrayUsingPredicate:predicate]];
        
    [self.availableTimezoneTableView reloadData];
    }
}


- (IBAction)filterArray:(id)sender
{
    if (self.searchCriteria.selectedSegment == 1)
    {
        [self filterTimezoneArray:sender];
        return;
    }
    
    [self clearLabel];
    
    self.filteredArray = [NSMutableArray array];
    
    if (self.searchField.stringValue.length > 50)
    {
        self.activityInProgress = NO;
        self.messageLabel.stringValue = CLMaxCharactersReachedError;
        [NSTimer scheduledTimerWithTimeInterval:10
                                         target:self
                                       selector:@selector(clearLabel)
                                       userInfo:nil
                                        repeats:NO];
        return;
    }
    
    if (self.searchField.stringValue.length > 0)
    {
        [self callGoogleAPiWithSearchString:self.searchField.stringValue];
    }
    else
    {
        if (self.dataTask.state == NSURLSessionTaskStateRunning) {
            [self.dataTask cancel];
        }
        self.activityInProgress = NO;
        self.placeholderLabel.placeholderString = CLEmptyString;
    }
        
    [self.availableTimezoneTableView reloadData];
}

- (void)refereshTimezoneTableView
{
     dispatch_async(dispatch_get_main_queue(), ^{
         
      NSMutableArray *defaultTimeZones = [[NSUserDefaults standardUserDefaults]
                                        objectForKey:CLDefaultPreferenceKey];
         
      self.selectedTimeZones = [[NSMutableArray alloc] initWithArray:defaultTimeZones];
         
      [self.timezoneTableView reloadData];
    });
}

- (void)refreshMainTableview
{
    dispatch_async(dispatch_get_main_queue(), ^{
        ApplicationDelegate *appDelegate = [[NSApplication sharedApplication] delegate];
        
        PanelController *panelController = appDelegate.panelController;
        
        [panelController updateDefaultPreferences];
        
        [panelController.mainTableview reloadData];
        
    });
}

#pragma mark Reordering

- (BOOL)tableView:(NSTableView *)tableView writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard *)pboard
{
    NSData *data = [NSKeyedArchiver archivedDataWithRootObject:rowIndexes];
    
    [pboard declareTypes:[NSArray arrayWithObject:CLDragSessionKey] owner:self];
    
    [pboard setData:data forType:CLDragSessionKey];
    
    return YES;
}


-(BOOL)tableView:(NSTableView *)tableView acceptDrop:(id<NSDraggingInfo>)info row:(NSInteger)row dropOperation:(NSTableViewDropOperation)dropOperation
{
    if (row == self.selectedTimeZones.count) {
        row--;
    }
    
    NSPasteboard *pBoard = [info draggingPasteboard];
    
    NSData *data = [pBoard dataForType:CLDragSessionKey];
    
    NSIndexSet *rowIndexes = [NSKeyedUnarchiver unarchiveObjectWithData:data];
    
    [self.selectedTimeZones exchangeObjectAtIndex:rowIndexes.firstIndex withObjectAtIndex:row];
    
    [[NSUserDefaults standardUserDefaults] setObject:self.selectedTimeZones forKey:CLDefaultPreferenceKey];
    
    [self.timezoneTableView reloadData];
    
    [self refreshMainTableview];
    
    return YES;
}

-(NSDragOperation)tableView:(NSTableView *)tableView
               validateDrop:(id<NSDraggingInfo>)info
                proposedRow:(NSInteger)row
      proposedDropOperation:(NSTableViewDropOperation)dropOperation
{
    return NSDragOperationEvery;
}

- (void)callGoogleAPiWithSearchString:(NSString *)searchString
{
    if (self.dataTask.state == NSURLSessionTaskStateRunning) {
        [self.dataTask cancel];
    }
    
    if (self.availableTimezoneTableView.isHidden)
    {
        self.availableTimezoneTableView.hidden = NO;
    }
    
    self.placeholderLabel.hidden = NO;
    
    if (![CLAPI isUserConnectedToInternet]) {
        self.placeholderLabel.placeholderString = CLNoInternetConnectivityError;
        return;
    }
    
    self.activityInProgress = YES;

    self.placeholderLabel.placeholderString = [NSString stringWithFormat:@"Searching for '%@'", searchString];
    
    NSArray* words = [searchString componentsSeparatedByCharactersInSet :[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    searchString = [words componentsJoinedByString:CLEmptyString];
    
    NSString *urlString = [NSString stringWithFormat:CLLocationSearchURL, searchString];
    
    [CLAPI dataTaskWithServicePath:urlString
                          bySender:self
               withCompletionBlock:^(NSError *error, NSDictionary *json) {
                   
                   
                   dispatch_async(dispatch_get_main_queue(), ^{
                       
                       if (error)
                       {
                           self.placeholderLabel.placeholderString = [error.localizedDescription isEqualToString:@"The Internet connection appears to be offline."] ?
                           CLNoInternetConnectivityError : CLTryAgainMessage;
                           self.activityInProgress = NO;
                           return;
                       }
                       
                       self.placeholderLabel.placeholderString = CLEmptyString;
                       
                       if ([json[@"status"] isEqualToString:@"ZERO_RESULTS"]) {
                           self.placeholderLabel.placeholderString = @"No results! 😔 Try entering the exact name.";
                           self.activityInProgress = NO;
                           return;
                       }
                       
                       for (NSDictionary *dictionary in json[@"results"])
                       {
                           NSDictionary *latLang = [[dictionary objectForKey:@"geometry"] objectForKey:@"location"];
                           NSString *latitude = latLang[@"lat"];
                           NSString *longitude = latLang[@"lng"];
                           NSString *formattedAddress = [dictionary objectForKey:@"formatted_address"];
                           
                           NSDictionary *totalPackage = @{@"latitude":latitude,
                                                          @"longitude" : longitude,
                                                          CLTimezoneName:formattedAddress,
                                                          CLCustomLabel: CLEmptyString,
                                                          CLTimezoneID : CLEmptyString,
                                                          CLPlaceIdentifier : dictionary[CLPlaceIdentifier]};
                           
                           CLTimezoneData *newObject = [[CLTimezoneData alloc] initWithDictionary:totalPackage];
                           
                           [self.filteredArray addObject:newObject];
                           
                       }
                       self.activityInProgress = NO;
                       
                       [self.availableTimezoneTableView reloadData];
                       
                   });
                   
               }];
}

- (void)getTimeZoneForLatitude:(NSString *)latitude andLongitude:(NSString *)longitude
{    
    if (![CLAPI isUserConnectedToInternet]) {
        dispatch_async(dispatch_get_main_queue(), ^{
            self.placeholderLabel.placeholderString = CLNoInternetConnectivityError;
            self.activityInProgress = NO;
            self.filteredArray = [NSMutableArray array];
            [self.availableTimezoneTableView reloadData];
        });

        return;
    }

    
    self.searchField.placeholderString = @"Fetching data might take some time!";

    self.placeholderLabel.placeholderString = @"Retrieving timezone data";
  
    self.availableTimezoneTableView.hidden = YES;
    
    NSString *tuple = [NSString stringWithFormat:@"%@,%@", latitude, longitude];
    
    NSTimeInterval timestamp = [[NSDate date] timeIntervalSince1970];
    
    NSString *urlString = [NSString stringWithFormat:CLTimezoneSearchURL, tuple, timestamp];
    
    [CLAPI dataTaskWithServicePath:urlString
                          bySender:self
               withCompletionBlock:^(NSError *error, NSDictionary *json) {
                  
                   if (!error)
                   {
                       dispatch_async(dispatch_get_main_queue(), ^{
                
                           if (json.count == 0) {
                               self.activityInProgress = NO;
                               self.placeholderLabel.placeholderString = @"No results found! ! 😔 Try Again?";
                               return;
                           }
                           
                           if ([json[@"status"] isEqualToString:@"ZERO_RESULTS"]) {
                               self.placeholderLabel.placeholderString = @"No results! 😔 Try entering the exact name.";
                               self.activityInProgress = NO;
                               return;
                           }
                           
                           CLTimezoneData *dataObject = self.filteredArray[self.availableTimezoneTableView.selectedRow];
                           
                           [dataObject sendAnalyticsData];
                           
                           NSString *filteredAddress = dataObject.formattedAddress;
                           
                           NSRange range = [filteredAddress rangeOfString:@","];
                           if (range.location != NSNotFound)
                           {
                               filteredAddress = [dataObject.formattedAddress substringWithRange:NSMakeRange(0, range.location)];
                           }
                           
                           NSMutableDictionary *newTimezone = [NSMutableDictionary dictionary];
                           if (json[@"sunrise"]) {
                               [newTimezone setObject:json[@"sunrise"] forKey:@"sunriseTime"];
                           }
                           if (json[@"sunset"]) {
                               [newTimezone setObject:json[@"sunset"] forKey:@"sunsetTime"];
                           }
                           
                           [newTimezone setObject:json[@"timeZoneId"] forKey:CLTimezoneID];
                           
                           
                           [newTimezone setObject:filteredAddress forKey:CLTimezoneName];
                           [newTimezone setObject:dataObject.place_id forKey:CLPlaceIdentifier];
                           [newTimezone setObject:latitude forKey:@"latitude"];
                           [newTimezone setObject:longitude forKey:@"longitude"];
                           [newTimezone setObject:CLEmptyString forKey:@"nextUpdate"];
                           [newTimezone setObject:CLEmptyString forKey:CLCustomLabel];
                           
                           
                           
                           CLTimezoneData *timezoneObject = [[CLTimezoneData alloc] initWithDictionary:newTimezone];
                           
                           
                           
                           NSArray *defaultPreference = [[NSUserDefaults standardUserDefaults] objectForKey:CLDefaultPreferenceKey];
                           
                           if (defaultPreference == nil)
                           {
                               defaultPreference = [[NSMutableArray alloc] init];
                           }
                           
                           NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:timezoneObject];
                           NSMutableArray *newArray = [[NSMutableArray alloc] initWithArray:defaultPreference];
                           [newArray addObject:encodedObject];
                           
                           [[NSUserDefaults standardUserDefaults] setObject:newArray forKey:CLDefaultPreferenceKey];
                           
                           self.filteredArray = [NSMutableArray array];
                           
                           [self.availableTimezoneTableView reloadData];
                           
                           [self refereshTimezoneTableView];
                           
                           [self refreshMainTableview];
                           
                           [self.timezonePanel close];
                           
                           self.placeholderLabel.placeholderString = CLEmptyString;
                           
                           self.searchField.placeholderString = @"Enter a city, state or country name";
                           
                           self.availableTimezoneTableView.hidden = NO;
                           
                           self.activityInProgress = NO;
                           
                       });
                   }
                   else
                   {
                       self.placeholderLabel.placeholderString = [error.localizedDescription isEqualToString:@"The Internet connection appears to be offline."] ?
                       CLNoInternetConnectivityError : CLTryAgainMessage;
                       
                       self.activityInProgress = NO;

                   }
                   
               }];
    
}

- (IBAction)filterSearch:(id)sender
{
    if (self.searchCriteria.selectedSegment == 1)
    {
        if (self.searchField.stringValue.length > 0) {
            NSPredicate *predicate = [NSPredicate predicateWithFormat:CLSearchPredicateKey, self.searchField.stringValue];
            
            self.timeZoneFilteredArray = [NSMutableArray arrayWithArray:[self.timeZoneArray filteredArrayUsingPredicate:predicate]];
            
            [self.availableTimezoneTableView reloadData];
        }
    }
}


- (IBAction)searchOptions:(id)sender
{
    if (self.searchCriteria.selectedSegment == 0)
    {
        self.searchField.placeholderString = @"Enter a city, state or country name";
        self.columnName = @"Place(s)";
        self.abbreviation.hidden = YES;
    }
    else
    {
        self.timeZoneArray = [NSMutableArray arrayWithArray:[NSTimeZone knownTimeZoneNames]];
       self.searchField.placeholderString = @"Enter a timezone name";
        self.columnName = @"Timezone(s)";
        self.abbreviation.hidden = NO;
    }
    
    self.searchField.stringValue = CLEmptyString;
    [self.availableTimezoneTableView reloadData];
}

- (IBAction)loginPreferenceChanged:(NSButton *)sender
{
    if(!(SMLoginItemSetEnabled((__bridge CFStringRef)@"com.abhishek.Clocker-Helper", (BOOL)[sender state])))
    {
        NSLog(@"Login item was not successful.");
    }
    
}

@end