//

//  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