MyUIViewController.m

//
//  MyUIViewController.m
//  ToDoManager
//
//  Created by Алексей on 08.04.16.
//  Copyright © 2016 Alexey. All rights reserved.
//

#import "MyUIViewController.h"

@interface MyUIViewController ()

@property (strong,nonatomic) NSManagedObjectContext *managedObjectContext;
@property (strong,nonatomic) ToDoEntity *localToDoEntity;
@property (weak, nonatomic) IBOutlet UITextField *titleField;
@property (weak, nonatomic) IBOutlet UITextView *detailsField;
@property (weak, nonatomic) IBOutlet UIDatePicker *dueDateField;

@property (nonatomic,assign) BOOL wasDeleted;

@end

@implementation MyUIViewController

- (void)viewDidLoad {
    [super viewDidLoad];
}

-(void) viewWillAppear:(BOOL)animated{
    self.wasDeleted = NO;
    //set up form
    self.titleField.text = self.localToDoEntity.toDoTitle;
    self.detailsField.text = self.localToDoEntity.toDoDetails;
    NSDate *dueDate = self.localToDoEntity.toDoDueDate;
    if (dueDate != nil)
    {
        [self.dueDateField setDate:dueDate];
    }
    
    //Detect edit ends
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textViewDidEndEditing:) name:UITextViewTextDidEndEditingNotification object:self];
}


- (IBAction)trashTapped:(id)sender {
    self.wasDeleted = YES;
    [self.managedObjectContext deleteObject:self.localToDoEntity];
    [self saveMyToDoEntity];
    [self.navigationController popToRootViewControllerAnimated:YES];
    
}

-(void) receiveMOC:(NSManagedObjectContext *)incomingMOC{
    self.managedObjectContext = incomingMOC;
}

-(void) receiveToDoEntity:(ToDoEntity *)incomingToDoEntity{
    self.localToDoEntity = incomingToDoEntity;
}

-(void) textViewDidEndEditing:(NSNotification *)notification
{
    if ([notification object] == self)
    {
        self.localToDoEntity.toDoDetails = self.detailsField.text;
        [self saveMyToDoEntity];
    }
}

- (IBAction)titleFieldEditted:(id)sender {
    self.localToDoEntity.toDoTitle = self.titleField.text;
    [self saveMyToDoEntity];
}
- (IBAction)dueDateEditted:(id)sender {
    self.localToDoEntity.toDoDueDate = self.dueDateField.date;
    [self saveMyToDoEntity];
}


-(void) viewDidDisappear:(BOOL)animated{
    if (self.wasDeleted == NO)
    {
        //Save Everything
        self.localToDoEntity.toDoTitle = self.titleField.text;
        self.localToDoEntity.toDoDetails = self.detailsField.text;
        self.localToDoEntity.toDoDueDate = self.dueDateField.date;
        [self saveMyToDoEntity];
    }
    
    //Remove detection
    [[NSNotificationCenter defaultCenter]removeObserver:self name:UITextViewTextDidEndEditingNotification object:self];
}

-(void)saveMyToDoEntity{
    NSError *err;
    BOOL saveSuccess = [self.managedObjectContext save:&err];
    if (!saveSuccess)
        @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"Couldn't save" userInfo:nil];
}



@end