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/*
File: ButtonsViewController.m
Abstract: The table view controller for hosting the UIButton features of this sample.
Version: 2.10
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*/
#import "ButtonsViewController.h"
#import "Constants.h"
#define kStdButtonWidth 106.0
#define kStdButtonHeight 40.0
#define kViewTag 1 // for tagging our embedded controls for removal at cell recycle time
static NSString *kSectionTitleKey = @"sectionTitleKey";
static NSString *kLabelKey = @"labelKey";
static NSString *kSourceKey = @"sourceKey";
static NSString *kViewKey = @"viewKey";
#pragma mark -
@implementation ButtonsViewController
@synthesize dataSourceArray;
@synthesize grayButton, imageButton, roundedButtonType, detailDisclosureButtonType, infoLightButtonType, infoDarkButtonType, contactAddButtonType;
- (void)dealloc
{
[grayButton release];
[imageButton release];
[roundedButtonType release];
[detailDisclosureButtonType release];
[infoLightButtonType release];
[infoDarkButtonType release];
[contactAddButtonType release];
[dataSourceArray release];
[super dealloc];
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = NSLocalizedString(@"ButtonsTitle", @"");
self.dataSourceArray = [NSArray arrayWithObjects:
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButton", kSectionTitleKey,
@"Background Image", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)grayButton", kSourceKey,
self.grayButton, kViewKey,
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButton", kSectionTitleKey,
@"Button with Image", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)imageButton", kSourceKey,
self.imageButton, kViewKey,
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButtonTypeRoundedRect", kSectionTitleKey,
@"Rounded Button", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)roundedButtonType", kSourceKey,
self.roundedButtonType, kViewKey,
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButtonTypeDetailDisclosure", kSectionTitleKey,
@"Detail Disclosure", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)detailDisclosureButton", kSourceKey,
self.detailDisclosureButtonType, kViewKey,
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButtonTypeInfoLight", kSectionTitleKey,
@"Info Light", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)infoLightButtonType", kSourceKey,
self.infoLightButtonType, kViewKey,
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButtonTypeInfoDark", kSectionTitleKey,
@"Info Dark", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)infoDarkButtonType", kSourceKey,
self.infoDarkButtonType, kViewKey,
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
@"UIButtonTypeContactAdd", kSectionTitleKey,
@"Contact Add", kLabelKey,
@"ButtonsViewController.m:\r(UIButton *)contactAddButtonType", kSourceKey,
self.contactAddButtonType, kViewKey,
nil],
nil];
}
// called after the view controller's view is released and set to nil.
// For example, a memory warning which causes the view to be purged. Not invoked as a result of -dealloc.
// So release any properties that are loaded in viewDidLoad or can be recreated lazily.
//
- (void)viewDidUnload
{
[super viewDidUnload];
// release the controls and set them nil in case they were ever created
// note: we can't use "self.xxx = nil" since they are read only properties
//
[grayButton release];
grayButton = nil;
[imageButton release];
imageButton = nil;
[roundedButtonType release];
roundedButtonType = nil;
[detailDisclosureButtonType release];
detailDisclosureButtonType = nil;
[infoLightButtonType release];
infoLightButtonType = nil;
[infoDarkButtonType release];
infoDarkButtonType = nil;
[contactAddButtonType release];
contactAddButtonType = nil;
self.dataSourceArray = nil;
}
#pragma mark -
#pragma mark UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [self.dataSourceArray count];
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [[self.dataSourceArray objectAtIndex: section] valueForKey:kSectionTitleKey];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 2;
}
// to determine specific row height for each cell, override this.
// In this example, each row is determined by its subviews that are embedded.
//
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return ([indexPath row] == 0) ? 50.0 : 38.0;
}
// to determine which UITableViewCell to be used on a given row.
//
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
if ([indexPath row] == 0)
{
static NSString *kDisplayCell_ID = @"DisplayCellID";
cell = [self.tableView dequeueReusableCellWithIdentifier:kDisplayCell_ID];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kDisplayCell_ID] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
else
{
// the cell is being recycled, remove old embedded controls
UIView *viewToRemove = nil;
viewToRemove = [cell.contentView viewWithTag:kViewTag];
if (viewToRemove)
[viewToRemove removeFromSuperview];
}
cell.textLabel.text = [[self.dataSourceArray objectAtIndex: indexPath.section] valueForKey:kLabelKey];
UIButton *button = [[self.dataSourceArray objectAtIndex: indexPath.section] valueForKey:kViewKey];
[cell.contentView addSubview:button];
}
else
{
static NSString *kSourceCellID = @"SourceCellID";
cell = [self.tableView dequeueReusableCellWithIdentifier:kSourceCellID];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kSourceCellID] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.textLabel.opaque = NO;
cell.textLabel.textAlignment = UITextAlignmentCenter;
cell.textLabel.textColor = [UIColor grayColor];
cell.textLabel.numberOfLines = 2;
cell.textLabel.highlightedTextColor = [UIColor blackColor];
cell.textLabel.font = [UIFont systemFontOfSize:12.0];
}
cell.textLabel.text = [[self.dataSourceArray objectAtIndex: indexPath.section] valueForKey:kSourceKey];
}
return cell;
}
#pragma mark -
+ (UIButton *)newButtonWithTitle:(NSString *)title
target:(id)target
selector:(SEL)selector
frame:(CGRect)frame
image:(UIImage *)image
imagePressed:(UIImage *)imagePressed
darkTextColor:(BOOL)darkTextColor
{
UIButton *button = [[UIButton alloc] initWithFrame:frame];
// or you can do this:
// UIButton *button = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
button.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
[button setTitle:title forState:UIControlStateNormal];
if (darkTextColor)
{
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
}
else
{
[button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
}
UIImage *newImage = [image stretchableImageWithLeftCapWidth:12.0 topCapHeight:0.0];
[button setBackgroundImage:newImage forState:UIControlStateNormal];
UIImage *newPressedImage = [imagePressed stretchableImageWithLeftCapWidth:12.0 topCapHeight:0.0];
[button setBackgroundImage:newPressedImage forState:UIControlStateHighlighted];
[button addTarget:target action:selector forControlEvents:UIControlEventTouchUpInside];
// in case the parent view draws with a custom color or gradient, use a transparent color
button.backgroundColor = [UIColor clearColor];
return button;
}
- (void)action:(id)sender
{
//NSLog(@"UIButton was clicked");
}
#pragma mark -
#pragma mark Lazy creation of buttons
- (UIButton *)grayButton
{
if (grayButton == nil)
{
// create the UIButtons with various background images
// white button:
UIImage *buttonBackground = [UIImage imageNamed:@"whiteButton.png"];
UIImage *buttonBackgroundPressed = [UIImage imageNamed:@"blueButton.png"];
CGRect frame = CGRectMake(182.0, 5.0, kStdButtonWidth, kStdButtonHeight);
grayButton = [ButtonsViewController newButtonWithTitle:@"Gray"
target:self
selector:@selector(action:)
frame:frame
image:buttonBackground
imagePressed:buttonBackgroundPressed
darkTextColor:YES];
grayButton.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return grayButton;
}
- (UIButton *)imageButton
{
if (imageButton == nil)
{
// create a UIButton with just an image instead of a title
UIImage *buttonBackground = [UIImage imageNamed:@"whiteButton.png"];
UIImage *buttonBackgroundPressed = [UIImage imageNamed:@"blueButton.png"];
CGRect frame = CGRectMake(182.0, 5.0, kStdButtonWidth, kStdButtonHeight);
imageButton = [ButtonsViewController newButtonWithTitle:@""
target:self
selector:@selector(action:)
frame:frame
image:buttonBackground
imagePressed:buttonBackgroundPressed
darkTextColor:YES];
[imageButton setImage:[UIImage imageNamed:@"UIButton_custom.png"] forState:UIControlStateNormal];
// Add an accessibility label to the image.
[imageButton setAccessibilityLabel:NSLocalizedString(@"ArrowButton", @"")];
imageButton.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return imageButton;
}
- (UIButton *)roundedButtonType
{
if (roundedButtonType == nil)
{
// create a UIButton (UIButtonTypeRoundedRect)
roundedButtonType = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
roundedButtonType.frame = CGRectMake(182.0, 5.0, kStdButtonWidth, kStdButtonHeight);
[roundedButtonType setTitle:@"Rounded" forState:UIControlStateNormal];
roundedButtonType.backgroundColor = [UIColor clearColor];
[roundedButtonType addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
roundedButtonType.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return roundedButtonType;
}
- (UIButton *)detailDisclosureButtonType
{
if (detailDisclosureButtonType == nil)
{
// create a UIButton (UIButtonTypeDetailDisclosure)
detailDisclosureButtonType = [[UIButton buttonWithType:UIButtonTypeDetailDisclosure] retain];
detailDisclosureButtonType.frame = CGRectMake(250.0, 8.0, 25.0, 25.0);
[detailDisclosureButtonType setTitle:@"Detail Disclosure" forState:UIControlStateNormal];
detailDisclosureButtonType.backgroundColor = [UIColor clearColor];
[detailDisclosureButtonType addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
// Add a custom accessibility label to the button because it has no associated text.
[detailDisclosureButtonType setAccessibilityLabel:NSLocalizedString(@"MoreInfoButton", @"")];
detailDisclosureButtonType.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return detailDisclosureButtonType;
}
- (UIButton *)infoDarkButtonType
{
if (infoDarkButtonType == nil)
{
// create a UIButton (UIButtonTypeInfoLight)
infoDarkButtonType = [[UIButton buttonWithType:UIButtonTypeInfoDark] retain];
infoDarkButtonType.frame = CGRectMake(250.0, 8.0, 25.0, 25.0);
[infoDarkButtonType setTitle:@"Detail Disclosure" forState:UIControlStateNormal];
infoDarkButtonType.backgroundColor = [UIColor clearColor];
[infoDarkButtonType addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
// Add a custom accessibility label to the button because it has no associated text.
[infoDarkButtonType setAccessibilityLabel:NSLocalizedString(@"MoreInfoButton", @"")];
infoDarkButtonType.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return infoDarkButtonType;
}
- (UIButton *)infoLightButtonType
{
if (infoLightButtonType == nil)
{
// create a UIButton (UIButtonTypeInfoLight)
infoLightButtonType = [[UIButton buttonWithType:UIButtonTypeInfoLight] retain];
infoLightButtonType.frame = CGRectMake(250.0, 8.0, 25.0, 25.0);
[infoLightButtonType setTitle:@"Detail Disclosure" forState:UIControlStateNormal];
infoLightButtonType.backgroundColor = [UIColor clearColor];
[infoLightButtonType addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
infoLightButtonType.backgroundColor = [UIColor grayColor];
// Add a custom accessibility label to the button because it has no associated text.
[infoLightButtonType setAccessibilityLabel:NSLocalizedString(@"MoreInfoButton", @"")];
infoLightButtonType.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return infoLightButtonType;
}
- (UIButton *)contactAddButtonType
{
if (contactAddButtonType == nil)
{
// create a UIButton (UIButtonTypeContactAdd)
contactAddButtonType = [[UIButton buttonWithType:UIButtonTypeContactAdd] retain];
contactAddButtonType.frame = CGRectMake(250.0, 8.0, 25.0, 25.0);
[contactAddButtonType setTitle:@"Detail Disclosure" forState:UIControlStateNormal];
contactAddButtonType.backgroundColor = [UIColor clearColor];
[contactAddButtonType addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
// Add a custom accessibility label to the button because it has no associated text.
[contactAddButtonType setAccessibilityLabel:NSLocalizedString(@"AddContactButton", @"")];
contactAddButtonType.tag = kViewTag; // tag this view for later so we can remove it from recycled table cells
}
return contactAddButtonType;
}
@end