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class MealTableViewController: UITableViewController {
// MARK: Properties
var meals = [Meal]()
override func viewDidLoad() {
super.viewDidLoad()
// Use the edit button item provided by the table view controller.
navigationItem.leftBarButtonItem = editButtonItem()
// Load any saved meals, otherwise load sample data.
if let savedMeals = loadMeals() {
meals += savedMeals
} else {
// Load the sample data.
loadSampleMeals()
}
}
func loadSampleMeals() {
let photo1 = UIImage(named: "meal1")!
let meal1 = Meal(name: "Caprese Salad", photo: photo1, rating: 4)!
let photo2 = UIImage(named: "meal2")!
let meal2 = Meal(name: "Chicken and Potatoes", photo: photo2, rating: 5)!
let photo3 = UIImage(named: "meal3")!
let meal3 = Meal(name: "Pasta with Meatballs", photo: photo3, rating: 3)!
meals += [meal1, meal2, meal3]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return meals.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
// Table view cells are reused and should be dequeued using a cell identifier.
let cellIdentifier = "MealTableViewCell"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! MealTableViewCell
// Fetches the appropriate meal for the data source layout.
let meal = meals[indexPath.row]
cell.nameLabel.text = meal.name
cell.photoImageView.image = meal.photo
cell.ratingControl.rating = meal.rating
return cell
}
// Override to support conditional editing of the table view.
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return true
}
// Override to support editing the table view.
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if editingStyle == .Delete {
// Delete the row from the data source
meals.removeAtIndex(indexPath.row)
saveMeals()
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
} else if editingStyle == .Insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the item to be re-orderable.
return true
}
*/
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "ShowDetail" {
let mealDetailViewController = segue.destinationViewController as! MealViewController
// Get the cell that generated this segue.
if let selectedMealCell = sender as? MealTableViewCell {
let indexPath = tableView.indexPathForCell(selectedMealCell)!
let selectedMeal = meals[indexPath.row]
mealDetailViewController.meal = selectedMeal
}
}
else if segue.identifier == "AddItem" {
print("Adding new meal.")
}
}
@IBAction func unwindToMealList(sender: UIStoryboardSegue) {
if let sourceViewController = sender.sourceViewController as? MealViewController, meal = sourceViewController.meal {
if let selectedIndexPath = tableView.indexPathForSelectedRow {
// Update an existing meal.
meals[selectedIndexPath.row] = meal
tableView.reloadRowsAtIndexPaths([selectedIndexPath], withRowAnimation: .None)
} else {
// Add a new meal.
let newIndexPath = NSIndexPath(forRow: meals.count, inSection: 0)
meals.append(meal)
tableView.insertRowsAtIndexPaths([newIndexPath], withRowAnimation: .Bottom)
}
// Save the meals.
saveMeals()
}
}
// MARK: NSCoding
func saveMeals() {
let isSuccessfulSave = NSKeyedArchiver.archiveRootObject(meals, toFile: Meal.ArchiveURL.path!)
if !isSuccessfulSave {
print("Failed to save meals...")
}
}
func loadMeals() -> [Meal]? {
return NSKeyedUnarchiver.unarchiveObjectWithFile(Meal.ArchiveURL.path!) as? [Meal]
}
}
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