Classes/SamplesController.m
/* |
File: SamplesController.m |
Abstract: A table view controller to manage and display a list file names of sample layouts to draw. |
The view controller manages one array: |
* samplesForDisplay is the array that corresponds to the full set samples the app can show. |
The table view displays the contents of the samplesForDisplay array. |
The view controller has a delegate that it notifies if row in the table view is selected. |
Version: 1.1 |
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*/ |
#import "SamplesController.h" |
@implementation SamplesController |
@synthesize delegate, samplesForDisplay, selectedSample; |
// Utility helper method to extract list of sample document filenames from bundle |
// used to present list of samples for user selection in UI. |
- (NSArray*)copySamplesInBundle { |
NSMutableArray* result = [[NSMutableArray alloc] init]; |
NSArray* filesInBundle = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[[NSBundle mainBundle] bundlePath] error:NULL]; |
for (NSString* fileName in filesInBundle) { |
if ([fileName hasSuffix:@".xml"]) { |
// remove file extension for UI |
[result addObject:[fileName stringByDeletingPathExtension]]; |
} |
} |
return result; |
} |
#pragma mark - |
#pragma mark View lifecycle |
- (void)viewDidLoad { |
[super viewDidLoad]; |
self.title = @"Samples"; |
self.contentSizeForViewInPopover = CGSizeMake(300.0, 280.0); |
// Get list of samples to show in UI |
samplesForDisplay = [self copySamplesInBundle]; |
// Initially, there is no active sample (RootViewController will specify this) |
selectedSample = @""; |
} |
- (BOOL)shouldAutorotate { |
return YES; |
} |
#pragma mark - |
#pragma mark Table view methods |
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { |
return [samplesForDisplay count]; |
} |
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { |
static NSString *CellIdentifier = @"Cell"; |
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; |
if (cell == nil) { |
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; |
} |
// Set the tableview cell text to the name of the sample at the given index |
NSString *cellSampleName = [samplesForDisplay objectAtIndex:indexPath.row]; |
cell.textLabel.text = cellSampleName; |
if ([selectedSample isEqual:cellSampleName]) { |
cell.accessoryType = UITableViewCellAccessoryCheckmark; |
} else { |
cell.accessoryType = UITableViewCellAccessoryNone; |
} |
return cell; |
} |
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { |
NSString *cellSampleName = [samplesForDisplay objectAtIndex:indexPath.row]; |
// Notify the delegate if a row is selected (adding back file extension for delegate) |
if (delegate && [delegate respondsToSelector:@selector(samplesController:didSelectString:)]) { |
[delegate samplesController:self didSelectString:[cellSampleName stringByAppendingPathExtension:@"xml"]]; |
} |
self.selectedSample = cellSampleName; |
[self.tableView reloadData]; // refresh tableView cells for selection state change |
} |
#pragma mark - |
#pragma mark Memory management |
- (void)dealloc { |
[samplesForDisplay release]; |
[super dealloc]; |
} |
@end |
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