/*

     File: CustomAccessoryViewController.m

 Abstract: The table view controller for the Custom Accessory tab.  It Manages

 a table view where each cell contains a checkbox control on the left side

 of a custom table view cell.

  Version: 1.4

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 */

#import "CustomAccessoryViewController.h"

#import "CustomCell.h"

#import "DetailViewController.h"

@interface CustomAccessoryViewController ()

//! Product listings from the TableData plist file.

@property (nonatomic, strong) NSMutableArray *dataArray;

@end

@implementation CustomAccessoryViewController

//| ----------------------------------------------------------------------------

- (void)viewDidLoad

{

    [super viewDidLoad];

    // Load our data from a plist file inside our app bundle.

    NSString *path = [[NSBundle mainBundle] pathForResource:@"TableData" ofType:@"plist"];

    self.dataArray = [NSMutableArray arrayWithContentsOfFile:path];

}

//| ----------------------------------------------------------------------------

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    // Reload the table when we return to the screen.  The "checked" property of

    // an item may have been altered by the DetailViewController.

    [self.tableView reloadData];

}

#pragma mark -

#pragma mark UITableViewDataSource

//| ----------------------------------------------------------------------------

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

    return (NSInteger)[self.dataArray count];

}

//| ----------------------------------------------------------------------------

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    static NSString *kCustomCellID = @"CustomCell";

    CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:kCustomCellID];

    NSDictionary *item = self.dataArray[(NSUInteger)indexPath.row];

    cell.titleLabel.text = item[@"text"];

    cell.checkBox.checked = [item[@"checked"] boolValue];

    // Accessibility

    [self updateAccessibilityForCell:cell];

    return cell;

}

#pragma mark - 

#pragma mark UITableViewDelegate

//| ----------------------------------------------------------------------------

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

{

    // Find the cell being touched and update its checked/unchecked image.

    CustomCell *targetCustomCell = (CustomCell *)[tableView cellForRowAtIndexPath:indexPath];

    targetCustomCell.checkBox.checked = !targetCustomCell.checkBox.checked;

    // Don't keep the table selection.

    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    // Update our data source array with the new checked state.

    NSMutableDictionary *selectedItem = self.dataArray[(NSUInteger)indexPath.row];

    selectedItem[@"checked"] = @(targetCustomCell.checkBox.checked);

    // Accessibility

    [self updateAccessibilityForCell:targetCustomCell];

}

//| ----------------------------------------------------------------------------

//! IBAction that is called when the value of a checkbox in any row changes.

//

- (IBAction)checkBoxTapped:(id)sender forEvent:(UIEvent*)event

{

    NSSet *touches = [event allTouches];

    UITouch *touch = [touches anyObject];

    CGPoint currentTouchPosition = [touch locationInView:self.tableView];

    // Lookup the index path of the cell whose checkbox was modified.

    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:currentTouchPosition];

    if (indexPath != nil)

    {

        // Update our data source array with the new checked state.

        NSMutableDictionary *selectedItem = self.dataArray[(NSUInteger)indexPath.row];

        selectedItem[@"checked"] = @([(Checkbox*)sender isChecked]);

    }

    // Accessibility

    [self updateAccessibilityForCell:(CustomCell*)[self.tableView cellForRowAtIndexPath:indexPath]];

}

//| ----------------------------------------------------------------------------

//  This will be called when the accessory button in one of the cells is tapped.

//

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender

{

    if ([segue.identifier isEqualToString:@"DetailViewSegue"]) {

        DetailViewController *destination = (DetailViewController*)segue.destinationViewController;

        NSIndexPath *selectedIndexPath = [self.tableView indexPathForCell:sender];

        destination.item = self.dataArray[(NSUInteger)selectedIndexPath.row];

    }

}

#pragma mark -

#pragma mark Accessibility

//| ----------------------------------------------------------------------------

//! Utility method for configuring a cell's accessibilityValue based upon the

//! current checkbox state.

//

- (void)updateAccessibilityForCell:(CustomCell*)cell

{

    // The cell's accessibilityValue is the Checkbox's accessibilityValue.

    cell.accessibilityValue = cell.checkBox.accessibilityValue;

    cell.checkBox.accessibilityLabel = cell.titleLabel.text;

}

@end