//
//  SelectionListViewController.m
//
//  Created by Jeff LaMarche on 2/18/09.
//	Revised by Steve Webster on 2/22/09.
//

#import "SelectionListViewController.h"

@implementation SelectionListViewController
@synthesize list;
@synthesize lastIndexPath;
@synthesize initialSelection;
@synthesize delegate;


-(IBAction)cancel {
	[self.navigationController popViewControllerAnimated:YES];
}

-(IBAction)save {
	[self.delegate rowChosen:[lastIndexPath row]];
	[self.navigationController popViewControllerAnimated:YES];
}


#pragma mark -

- (id)initWithStyle:(UITableViewStyle)style {
	if ( self = [super initWithStyle:style] ) {
		initialSelection = -1;
	}
	return self;
}

- (void)viewDidLoad {
	UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc]
									 initWithTitle:NSLocalizedString(@"Cancel", @"Cancel - for button to cancel changes")
									 style:UIBarButtonItemStylePlain
									 target:self
									 action:@selector(cancel)];
	self.navigationItem.leftBarButtonItem = cancelButton;
	[cancelButton release];
	UIBarButtonItem *saveButton = [[UIBarButtonItem alloc]
								   initWithTitle:NSLocalizedString(@"Save", @"Save - for button to save changes")
								   style:UIBarButtonItemStyleDone
								   target:self
								   action:@selector(save)];
	self.navigationItem.rightBarButtonItem = saveButton;
	[saveButton release];

	[super viewDidLoad];
}

- (void)viewWillAppear:(BOOL)animated {
	// Check to see if user has indicated a row to be selected, and set it
	if (initialSelection > - 1 && initialSelection < [list count]) {
		NSUInteger newIndex[] = {0, initialSelection};
		NSIndexPath *newPath = [[NSIndexPath alloc] initWithIndexes:newIndex length:2];
		self.lastIndexPath = newPath;
		[newPath release];
	}
	[self.tableView reloadData];
	[super viewWillAppear:animated];
}

- (void)dealloc {
	[list release];
	[lastIndexPath release];
	[super dealloc];
}


#pragma mark -
#pragma mark Tableview methods

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	return [list count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	
	static NSString *SelectionListCellIdentifier = @"SelectionListCellIdentifier";
	
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SelectionListCellIdentifier];
	if (cell == nil) {
		cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:SelectionListCellIdentifier] autorelease];
	}
	
	NSUInteger row = [indexPath row];
	NSUInteger oldRow = [lastIndexPath row];
	cell.text = [list objectAtIndex:row];
	cell.accessoryType = (row == oldRow && lastIndexPath != nil) ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;
	
	return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	
	int newRow = [indexPath row];
	int oldRow = [lastIndexPath row];
	
	if (newRow != oldRow) {
		UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];
		newCell.accessoryType = UITableViewCellAccessoryCheckmark;
		
		UITableViewCell *oldCell = [tableView cellForRowAtIndexPath: lastIndexPath]; 
		oldCell.accessoryType = UITableViewCellAccessoryNone;
		
		lastIndexPath = indexPath;  
	}
	
	[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
@end