/UICatalog/ViewControllers/ButtonsViewController.m

/*
     File: ButtonsViewController.m 
 Abstract: The table view controller for hosting the UIButton features of this sample. 
  Version: 2.11 
  
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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";

// tableView cell id constants
static NSString *kDisplayCellID = @"DisplayCellID";
static NSString *kSourceCellID = @"SourceCellID";


#pragma mark -

@interface ButtonsViewController ()

@property (nonatomic, strong) UIButton *grayButton;
@property (nonatomic, strong) UIButton *imageButton;
@property (nonatomic, strong) UIButton *attrTextButton;
@property (nonatomic, strong) UIButton *roundedButtonType;

@property (nonatomic, strong) UIButton *detailDisclosureButtonType;

@property (nonatomic, strong) UIButton *infoLightButtonType;
@property (nonatomic, strong) UIButton *infoDarkButtonType;

@property (nonatomic, strong) UIButton *contactAddButtonType;

@property (nonatomic, strong) NSArray *dataSourceArray;

@end


#pragma mark -

@implementation ButtonsViewController

- (void)viewDidLoad
{
	[super viewDidLoad];
	
	self.title = NSLocalizedString(@"ButtonsTitle", @"");
	
	self.dataSourceArray = @[
                                @{  kSectionTitleKey:@"UIButton",
                                    kLabelKey:@"Background Image",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)grayButton",
                                    kViewKey:self.grayButton },
                            
                                @{  kSectionTitleKey:@"UIButton",
                                    kLabelKey:@"Button with Image",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)imageButton",
                                    kViewKey:self.imageButton },

                                @{  kSectionTitleKey:@"UIButtonTypeRoundedRect",
                                    kLabelKey:@"Rounded Button",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)roundedButtonType",
                                    kViewKey:self.roundedButtonType },
                                
                                @{  kSectionTitleKey:@"UIButtonTypeRoundedRect",
                                    kLabelKey:@"Attributed Text",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)attrTextButton",
                                    kViewKey:self.attrTextButton },
                        
                                @{  kSectionTitleKey:@"UIButtonTypeDetailDisclosure",
                                    kLabelKey:@"Detail Disclosure",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)detailDisclosureButton",
                                    kViewKey:self.detailDisclosureButtonType },
                        
                                @{  kSectionTitleKey:@"UIButtonTypeInfoLight",
                                    kLabelKey:@"Info Light",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)infoLightButtonType",
                                    kViewKey:self.infoLightButtonType},
                        
                                @{  kSectionTitleKey:@"UIButtonTypeInfoDark",
                                    kLabelKey:@"Info Dark",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)infoDarkButtonType",
                                    kViewKey:self.infoDarkButtonType},
                        
                                @{  kSectionTitleKey:@"UIButtonTypeContactAdd",
                                    kLabelKey:@"Contact Add",
                                    kSourceKey:@"ButtonsViewController.m:\r(UIButton *)contactAddButtonType",
                                    kViewKey:self.contactAddButtonType}
                            ];
    
    // register our cell IDs for later when we are asked for UITableViewCells
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:kDisplayCellID];
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:kSourceCellID];
}


#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)
	{
		cell = [tableView dequeueReusableCellWithIdentifier:kDisplayCellID forIndexPath:indexPath];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
    
        // remove old embedded control
        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];
        
        // make sure this button is right-justified to the right side of the cell
        CGRect newFrame = button.frame;
        newFrame.origin.x = CGRectGetWidth(cell.contentView.frame) - CGRectGetWidth(newFrame) - 10.0;
        button.frame = newFrame;
        
        // if the cell is ever resized, keep the button over to the right
        button.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;
        
        [cell.contentView addSubview:button];
	}
	else
	{
		cell = [tableView dequeueReusableCellWithIdentifier:kSourceCellID forIndexPath:indexPath];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        cell.textLabel.opaque = NO;
        cell.textLabel.textAlignment = NSTextAlignmentCenter;
        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 - 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(0.0, 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(0.0, 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 *)attrTextButton
{
    if (_attrTextButton == nil)
	{
		// create a UIButton with attributed text for its title
		_attrTextButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
		_attrTextButton.frame = CGRectMake(0.0, 5.0, kStdButtonWidth, kStdButtonHeight);
		[_attrTextButton setTitle:@"Rounded" forState:UIControlStateNormal];
		[_attrTextButton addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
        
		// Add an accessibility label to the image.
		[_attrTextButton setAccessibilityLabel:NSLocalizedString(@"AttrTextButton", @"")];

        // apply red text for normal state
        NSMutableAttributedString *normalAttrString = [[NSMutableAttributedString alloc] initWithString:@"Rounded"];
        [normalAttrString addAttribute:NSForegroundColorAttributeName
                           value:[UIColor redColor]
                           range:NSMakeRange(0, [normalAttrString length])];
        [_attrTextButton setAttributedTitle:normalAttrString forState:UIControlStateNormal];
        
        // apply green text for pressed state
        NSMutableAttributedString *highlightedAttrString = [[NSMutableAttributedString alloc] initWithString:@"Rounded"];
        [highlightedAttrString addAttribute:NSForegroundColorAttributeName
                           value:[UIColor greenColor]
                           range:NSMakeRange(0, [highlightedAttrString length])];
        [_attrTextButton setAttributedTitle:highlightedAttrString forState:UIControlStateHighlighted];
        
		_attrTextButton.tag = kViewTag;	// tag this view for later so we can remove it from recycled table cells
	}
	return _attrTextButton;
}

- (UIButton *)roundedButtonType
{
	if (_roundedButtonType == nil)
	{
		// create a UIButton (UIButtonTypeRoundedRect)
		_roundedButtonType = [UIButton buttonWithType:UIButtonTypeRoundedRect];
		_roundedButtonType.frame = CGRectMake(0.0, 5.0, kStdButtonWidth, kStdButtonHeight);
		[_roundedButtonType setTitle:@"Rounded" forState:UIControlStateNormal];
		[_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];
		_detailDisclosureButtonType.frame = CGRectMake(0.0, 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];
		_infoDarkButtonType.frame = CGRectMake(0.0, 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];
		_infoLightButtonType.frame = CGRectMake(0.0, 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];
		_contactAddButtonType.frame = CGRectMake(0.0, 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