//
// BlockAlertView.m
//
//
#import "BlockAlertView.h"
#import "BlockBackground.h"
#import "BlockUI.h"
@implementation BlockAlertView
@synthesize view = _view;
@synthesize backgroundImage = _backgroundImage;
@synthesize vignetteBackground = _vignetteBackground;
static UIImage *background = nil;
static UIImage *backgroundlandscape = nil;
static UIFont *titleFont = nil;
static UIFont *messageFont = nil;
static UIFont *buttonFont = nil;
#pragma mark - init
+ (void)initialize
{
if (self == [BlockAlertView class])
{
background = [UIImage imageNamed:kAlertViewBackground];
background =
[[background stretchableImageWithLeftCapWidth:0
topCapHeight:kAlertViewBackgroundCapHeight] retain];
backgroundlandscape = [UIImage imageNamed:kAlertViewBackgroundLandscape];
backgroundlandscape = [[backgroundlandscape
stretchableImageWithLeftCapWidth:0
topCapHeight:kAlertViewBackgroundCapHeight] retain];
titleFont = [kAlertViewTitleFont retain];
messageFont = [kAlertViewMessageFont retain];
buttonFont = [kAlertViewButtonFont retain];
}
}
+ (BlockAlertView *)alertWithTitle:(NSString *)title message:(NSString *)message
{
return [[[BlockAlertView alloc] initWithTitle:title message:message] autorelease];
}
+ (void)showInfoAlertWithTitle:(NSString *)title message:(NSString *)message
{
BlockAlertView *alert = [[BlockAlertView alloc] initWithTitle:title message:message];
[alert setCancelButtonWithTitle:NSLocalizedString(@"Dismiss", nil) block:nil];
[alert show];
[alert release];
}
+ (void)showErrorAlert:(NSError *)error
{
BlockAlertView *alert = [[BlockAlertView alloc]
initWithTitle:NSLocalizedString(@"Operation Failed", nil)
message:[NSString
stringWithFormat:NSLocalizedString(
@"The operation did not complete successfully: %@",
nil),
error]];
[alert setCancelButtonWithTitle:@"Dismiss" block:nil];
[alert show];
[alert release];
}
///////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark - NSObject
- (void)addComponents:(CGRect)frame
{
if (_title)
{
CGSize size = [_title sizeWithFont:titleFont
constrainedToSize:CGSizeMake(frame.size.width - kAlertViewBorder * 2, 1000)
lineBreakMode:NSLineBreakByWordWrapping];
UILabel *labelView = [[UILabel alloc]
initWithFrame:CGRectMake(kAlertViewBorder, _height,
frame.size.width - kAlertViewBorder * 2, size.height)];
labelView.font = titleFont;
labelView.numberOfLines = 0;
labelView.lineBreakMode = NSLineBreakByWordWrapping;
labelView.textColor = kAlertViewTitleTextColor;
labelView.backgroundColor = [UIColor clearColor];
labelView.textAlignment = NSTextAlignmentCenter;
labelView.shadowColor = kAlertViewTitleShadowColor;
labelView.shadowOffset = kAlertViewTitleShadowOffset;
labelView.text = _title;
[_view addSubview:labelView];
[labelView release];
_height += size.height + kAlertViewBorder;
}
if (_message)
{
CGSize size =
[_message sizeWithFont:messageFont
constrainedToSize:CGSizeMake(frame.size.width - kAlertViewBorder * 2, 1000)
lineBreakMode:NSLineBreakByWordWrapping];
UILabel *labelView = [[UILabel alloc]
initWithFrame:CGRectMake(kAlertViewBorder, _height,
frame.size.width - kAlertViewBorder * 2, size.height)];
labelView.font = messageFont;
labelView.numberOfLines = 0;
labelView.lineBreakMode = NSLineBreakByWordWrapping;
labelView.textColor = kAlertViewMessageTextColor;
labelView.backgroundColor = [UIColor clearColor];
labelView.textAlignment = NSTextAlignmentCenter;
labelView.shadowColor = kAlertViewMessageShadowColor;
labelView.shadowOffset = kAlertViewMessageShadowOffset;
labelView.text = _message;
[_view addSubview:labelView];
[labelView release];
_height += size.height + kAlertViewBorder;
}
}
- (void)setupDisplay
{
[[_view subviews] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
[obj removeFromSuperview];
}];
UIWindow *parentView = [BlockBackground sharedInstance];
CGRect frame = parentView.bounds;
frame.origin.x = floorf((frame.size.width - background.size.width) * 0.5);
frame.size.width = background.size.width;
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if (UIInterfaceOrientationIsLandscape(orientation))
{
frame.size.width += 150;
frame.origin.x -= 75;
}
_view.frame = frame;
_height = kAlertViewBorder + 15;
if (NeedsLandscapePhoneTweaks)
{
_height -= 15; // landscape phones need to trimmed a bit
}
[self addComponents:frame];
if (_shown)
[self show];
}
- (id)initWithTitle:(NSString *)title message:(NSString *)message
{
self = [super init];
if (self)
{
_title = [title copy];
_message = [message copy];
_view = [[UIView alloc] init];
_view.autoresizingMask =
UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleTopMargin |
UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
_blocks = [[NSMutableArray alloc] init];
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(setupDisplay)
name:UIApplicationDidChangeStatusBarOrientationNotification
object:nil];
if ([self class] == [BlockAlertView class])
[self setupDisplay];
_vignetteBackground = NO;
}
return self;
}
- (void)dealloc
{
[_title release];
[_message release];
[_backgroundImage release];
[_view release];
[_blocks release];
[super dealloc];
}
///////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark - Public
- (void)addButtonWithTitle:(NSString *)title color:(NSString *)color block:(void (^)())block
{
[_blocks addObject:[NSArray arrayWithObjects:block ? [[block copy] autorelease] : [NSNull null],
title, color, nil]];
}
- (void)addButtonWithTitle:(NSString *)title block:(void (^)())block
{
[self addButtonWithTitle:title color:@"gray" block:block];
}
- (void)setCancelButtonWithTitle:(NSString *)title block:(void (^)())block
{
[self addButtonWithTitle:title color:@"black" block:block];
}
- (void)setDestructiveButtonWithTitle:(NSString *)title block:(void (^)())block
{
[self addButtonWithTitle:title color:@"red" block:block];
}
- (void)show
{
_shown = YES;
BOOL isSecondButton = NO;
NSUInteger index = 0;
for (NSUInteger i = 0; i < _blocks.count; i++)
{
NSArray *block = [_blocks objectAtIndex:i];
NSString *title = [block objectAtIndex:1];
NSString *color = [block objectAtIndex:2];
UIImage *image =
[UIImage imageNamed:[NSString stringWithFormat:@"alert-%@-button.png", color]];
image = [image stretchableImageWithLeftCapWidth:(int)(image.size.width + 1) >> 1
topCapHeight:0];
CGFloat maxHalfWidth = floorf((_view.bounds.size.width - kAlertViewBorder * 3) * 0.5);
CGFloat width = _view.bounds.size.width - kAlertViewBorder * 2;
CGFloat xOffset = kAlertViewBorder;
if (isSecondButton)
{
width = maxHalfWidth;
xOffset = width + kAlertViewBorder * 2;
isSecondButton = NO;
}
else if (i + 1 < _blocks.count)
{
// In this case there's another button.
// Let's check if they fit on the same line.
CGSize size = [title sizeWithFont:buttonFont
minFontSize:10
actualFontSize:nil
forWidth:_view.bounds.size.width - kAlertViewBorder * 2
lineBreakMode:NSLineBreakByClipping];
if (size.width < maxHalfWidth - kAlertViewBorder)
{
// It might fit. Check the next Button
NSArray *block2 = [_blocks objectAtIndex:i + 1];
NSString *title2 = [block2 objectAtIndex:1];
size = [title2 sizeWithFont:buttonFont
minFontSize:10
actualFontSize:nil
forWidth:_view.bounds.size.width - kAlertViewBorder * 2
lineBreakMode:NSLineBreakByClipping];
if (size.width < maxHalfWidth - kAlertViewBorder)
{
// They'll fit!
isSecondButton = YES; // For the next iteration
width = maxHalfWidth;
}
}
}
else if (_blocks.count == 1)
{
// In this case this is the ony button. We'll size according to the text
CGSize size = [title sizeWithFont:buttonFont
minFontSize:10
actualFontSize:nil
forWidth:_view.bounds.size.width - kAlertViewBorder * 2
lineBreakMode:UILineBreakModeClip];
size.width = MAX(size.width, 80);
if (size.width + 2 * kAlertViewBorder < width)
{
width = size.width + 2 * kAlertViewBorder;
xOffset = floorf((_view.bounds.size.width - width) * 0.5);
}
}
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(xOffset, _height, width, kAlertButtonHeight);
button.titleLabel.font = buttonFont;
if (IOS_LESS_THAN_6)
{
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
button.titleLabel.minimumFontSize = 10;
#pragma clang diagnostic pop
}
else
{
button.titleLabel.adjustsFontSizeToFitWidth = YES;
button.titleLabel.adjustsLetterSpacingToFitWidth = YES;
button.titleLabel.minimumScaleFactor = 0.1;
}
button.titleLabel.textAlignment = NSTextAlignmentCenter;
button.titleLabel.shadowOffset = kAlertViewButtonShadowOffset;
button.backgroundColor = [UIColor clearColor];
button.tag = i + 1;
[button setBackgroundImage:image forState:UIControlStateNormal];
[button setTitleColor:kAlertViewButtonTextColor forState:UIControlStateNormal];
[button setTitleShadowColor:kAlertViewButtonShadowColor forState:UIControlStateNormal];
[button setTitle:title forState:UIControlStateNormal];
button.accessibilityLabel = title;
[button addTarget:self
action:@selector(buttonClicked:)
forControlEvents:UIControlEventTouchUpInside];
[_view addSubview:button];
if (!isSecondButton)
_height += kAlertButtonHeight + kAlertViewBorder;
index++;
}
_height += 10; // Margin for the shadow
if (_height < background.size.height)
{
CGFloat offset = background.size.height - _height;
_height = background.size.height;
CGRect frame;
for (NSUInteger i = 0; i < _blocks.count; i++)
{
UIButton *btn = (UIButton *)[_view viewWithTag:i + 1];
frame = btn.frame;
frame.origin.y += offset;
btn.frame = frame;
}
}
CGRect frame = _view.frame;
frame.origin.y = -_height;
frame.size.height = _height;
_view.frame = frame;
UIImageView *modalBackground = [[UIImageView alloc] initWithFrame:_view.bounds];
if (UIInterfaceOrientationIsLandscape([[UIApplication sharedApplication] statusBarOrientation]))
modalBackground.image = backgroundlandscape;
else
modalBackground.image = background;
modalBackground.contentMode = UIViewContentModeScaleToFill;
modalBackground.autoresizingMask =
UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[_view insertSubview:modalBackground atIndex:0];
[modalBackground release];
if (_backgroundImage)
{
[BlockBackground sharedInstance].backgroundImage = _backgroundImage;
[_backgroundImage release];
_backgroundImage = nil;
}
[BlockBackground sharedInstance].vignetteBackground = _vignetteBackground;
[[BlockBackground sharedInstance] addToMainWindow:_view];
__block CGPoint center = _view.center;
center.y = floorf([BlockBackground sharedInstance].bounds.size.height * 0.5) + kAlertViewBounce;
_cancelBounce = NO;
[UIView animateWithDuration:0.4
delay:0.0
options:UIViewAnimationCurveEaseOut
animations:^{
[BlockBackground sharedInstance].alpha = 1.0f;
_view.center = center;
}
completion:^(BOOL finished) {
if (_cancelBounce)
return;
[UIView animateWithDuration:0.1
delay:0.0
options:0
animations:^{
center.y -= kAlertViewBounce;
_view.center = center;
}
completion:^(BOOL finished) {
[[NSNotificationCenter defaultCenter]
postNotificationName:@"AlertViewFinishedAnimations"
object:nil];
}];
}];
[self retain];
}
- (void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated
{
_shown = NO;
[[NSNotificationCenter defaultCenter] removeObserver:self];
if (buttonIndex >= 0 && buttonIndex < [_blocks count])
{
id obj = [[_blocks objectAtIndex:buttonIndex] objectAtIndex:0];
if (![obj isEqual:[NSNull null]])
{
((void (^)())obj)();
}
}
if (animated)
{
[UIView animateWithDuration:0.1
delay:0.0
options:0
animations:^{
CGPoint center = _view.center;
center.y += 20;
_view.center = center;
}
completion:^(BOOL finished) {
[UIView animateWithDuration:0.4
delay:0.0
options:UIViewAnimationCurveEaseIn
animations:^{
CGRect frame = _view.frame;
frame.origin.y = -frame.size.height;
_view.frame = frame;
[[BlockBackground sharedInstance] reduceAlphaIfEmpty];
}
completion:^(BOOL finished) {
[[BlockBackground sharedInstance] removeView:_view];
[_view release];
_view = nil;
[self autorelease];
}];
}];
}
else
{
[[BlockBackground sharedInstance] removeView:_view];
[_view release];
_view = nil;
[self autorelease];
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
#pragma mark - Action
- (void)buttonClicked:(id)sender
{
/* Run the button's block */
int buttonIndex = [sender tag] - 1;
[self dismissWithClickedButtonIndex:buttonIndex animated:YES];
}
@end