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#import "Toast+UIView.h"
#import <QuartzCore/QuartzCore.h>
#import <objc/runtime.h>
/*
* CONFIGURE THESE VALUES TO ADJUST LOOK & FEEL,
* DISPLAY DURATION, ETC.
*/
// general appearance
static const CGFloat CSToastMaxWidth = 0.8; // 80% of parent view width
static const CGFloat CSToastMaxHeight = 0.8; // 80% of parent view height
static const CGFloat CSToastHorizontalPadding = 16.0;
static const CGFloat CSToastVerticalPadding = 12.0;
static const CGFloat CSToastTopBottomOffset = 20.0;
static const CGFloat CSToastCornerRadius = 20.0;
static const CGFloat CSToastOpacity = 0.8;
static const CGFloat CSToastFontSize = 13.0;
static const CGFloat CSToastMaxTitleLines = 0;
static const CGFloat CSToastMaxMessageLines = 0;
static const NSTimeInterval CSToastFadeDuration = 0.3;
// shadow appearance
static const CGFloat CSToastShadowOpacity = 0.8;
static const CGFloat CSToastShadowRadius = 6.0;
static const CGSize CSToastShadowOffset = { 4.0, 4.0 };
static const BOOL CSToastDisplayShadow = YES;
// display duration and position
static const NSString * CSToastDefaultPosition = @"bottom";
static const NSTimeInterval CSToastDefaultDuration = 3.0;
// image view size
static const CGFloat CSToastImageViewWidth = 80.0;
static const CGFloat CSToastImageViewHeight = 80.0;
// activity
static const CGFloat CSToastActivityWidth = 100.0;
static const CGFloat CSToastActivityHeight = 100.0;
static const NSString * CSToastActivityDefaultPosition = @"center";
// interaction
static const BOOL CSToastHidesOnTap = YES; // excludes activity views
// associative reference keys
static const NSString * CSToastTimerKey = @"CSToastTimerKey";
static const NSString * CSToastActivityViewKey = @"CSToastActivityViewKey";
static UIView *prevToast = NULL;
// doesn't matter these are static
static id commandDelegate;
static id callbackId;
static id msg;
static id data;
static id styling;
@interface UIView (ToastPrivate)
- (void)hideToast:(UIView *)toast;
- (void)toastTimerDidFinish:(NSTimer *)timer;
- (void)handleToastTapped:(UITapGestureRecognizer *)recognizer;
- (CGPoint)centerPointForPosition:(id)position withToast:(UIView *)toast withAddedPixelsY:(int) addPixelsY;
- (UIView *)viewForMessage:(NSString *)message title:(NSString *)title image:(UIImage *)image;
- (CGSize)sizeForString:(NSString *)string font:(UIFont *)font constrainedToSize:(CGSize)constrainedSize lineBreakMode:(NSLineBreakMode)lineBreakMode;
@end
@implementation UIView (Toast)
#pragma mark - Toast Methods
- (void)makeToast:(NSString *)message {
[self makeToast:message duration:CSToastDefaultDuration position:CSToastDefaultPosition];
}
- (void)makeToast:(NSString *)message duration:(NSTimeInterval)duration position:(id)position {
UIView *toast = [self viewForMessage:message title:nil image:nil];
[self showToast:toast duration:duration position:position];
}
- (void)makeToast:(NSString *)message
duration:(NSTimeInterval)duration
position:(id)position addPixelsY:(int)addPixelsY
data:(NSDictionary*)_data
styling:(NSDictionary*)_styling
commandDelegate:(id <CDVCommandDelegate>)_commandDelegate
callbackId:(NSString *)_callbackId {
commandDelegate = _commandDelegate;
callbackId = _callbackId;
msg = message;
data = _data;
styling = _styling;
UIView *toast = [self viewForMessage:message title:nil image:nil];
[self showToast:toast duration:duration position:position addedPixelsY:addPixelsY];
}
- (void)makeToast:(NSString *)message duration:(NSTimeInterval)duration position:(id)position title:(NSString *)title {
UIView *toast = [self viewForMessage:message title:title image:nil];
[self showToast:toast duration:duration position:position];
}
- (void)makeToast:(NSString *)message duration:(NSTimeInterval)duration position:(id)position image:(UIImage *)image {
UIView *toast = [self viewForMessage:message title:nil image:image];
[self showToast:toast duration:duration position:position];
}
- (void)makeToast:(NSString *)message duration:(NSTimeInterval)duration position:(id)position title:(NSString *)title image:(UIImage *)image {
UIView *toast = [self viewForMessage:message title:title image:image];
[self showToast:toast duration:duration position:position];
}
- (void)showToast:(UIView *)toast {
[self showToast:toast duration:CSToastDefaultDuration position:CSToastDefaultPosition];
}
- (void)showToast:(UIView *)toast duration:(NSTimeInterval)duration position:(id)point {
[self showToast:toast duration:CSToastDefaultDuration position:CSToastDefaultPosition addedPixelsY:0];
}
- (void)showToast:(UIView *)toast duration:(NSTimeInterval)duration position:(id)point addedPixelsY:(int) addPixelsY {
[self hideToast];
prevToast = toast;
toast.center = [self centerPointForPosition:point withToast:toast withAddedPixelsY:addPixelsY];
toast.alpha = 0.0;
// note that we changed this to be always true
if (CSToastHidesOnTap) {
UITapGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc] initWithTarget:toast action:@selector(handleToastTapped:)];
[toast addGestureRecognizer:recognizer];
toast.userInteractionEnabled = YES;
toast.exclusiveTouch = YES;
}
// make sure that if InAppBrowser is active, we're still showing Toasts on top of it
UIViewController *vc = [self getTopMostViewController];
UIView *v = [vc view];
[v addSubview:toast];
NSNumber * opacity = styling[@"opacity"];
CGFloat theOpacity = opacity == nil ? CSToastOpacity : [opacity floatValue];
[UIView animateWithDuration:CSToastFadeDuration
delay:0.0
options:(UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionAllowUserInteraction)
animations:^{
toast.alpha = theOpacity;
} completion:^(BOOL finished) {
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:duration target:self selector:@selector(toastTimerDidFinish:) userInfo:toast repeats:NO];
// associate the timer with the toast view
objc_setAssociatedObject (toast, &CSToastTimerKey, timer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}];
}
- (UIViewController*) getTopMostViewController {
UIViewController *presentingViewController = [[[UIApplication sharedApplication] delegate] window].rootViewController;
while (presentingViewController.presentedViewController != nil) {
presentingViewController = presentingViewController.presentedViewController;
}
return presentingViewController;
}
- (void)hideToast {
if (prevToast){
[self hideToast:prevToast];
}
}
- (void)hideToast:(UIView *)toast {
[UIView animateWithDuration:CSToastFadeDuration
delay:0.0
options:(UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionBeginFromCurrentState)
animations:^{
toast.alpha = 0.0;
} completion:^(BOOL finished) {
[toast removeFromSuperview];
}];
}
#pragma mark - Events
- (void)toastTimerDidFinish:(NSTimer *)timer {
[self hideToast:(UIView *)timer.userInfo];
// also send an event back to JS
NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithObjectsAndKeys:msg, @"message", @"hide", @"event", nil];
if (data != nil) {
[dict setObject:data forKey:@"data"];
}
CDVPluginResult* pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDictionary:dict];
[commandDelegate sendPluginResult:pluginResult callbackId:callbackId];
}
- (void)handleToastTapped:(UITapGestureRecognizer *)recognizer {
NSTimer *timer = (NSTimer *)objc_getAssociatedObject(self, &CSToastTimerKey);
[timer invalidate];
[self hideToast:recognizer.view];
// also send an event back to JS
NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithObjectsAndKeys:msg, @"message", @"touch", @"event", nil];
if (data != nil) {
[dict setObject:data forKey:@"data"];
}
CDVPluginResult* pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDictionary:dict];
[commandDelegate sendPluginResult:pluginResult callbackId:callbackId];
}
#pragma mark - Toast Activity Methods
- (void)makeToastActivity {
[self makeToastActivity:CSToastActivityDefaultPosition];
}
- (void)makeToastActivity:(id)position {
// sanity
UIView *existingActivityView = (UIView *)objc_getAssociatedObject(self, &CSToastActivityViewKey);
if (existingActivityView != nil) return;
UIView *activityView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CSToastActivityWidth, CSToastActivityHeight)];
activityView.center = [self centerPointForPosition:position withToast:activityView withAddedPixelsY:0];
activityView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:CSToastOpacity];
activityView.alpha = 0.0;
activityView.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin);
activityView.layer.cornerRadius = CSToastCornerRadius;
if (CSToastDisplayShadow) {
activityView.layer.shadowColor = [UIColor blackColor].CGColor;
activityView.layer.shadowOpacity = CSToastShadowOpacity;
activityView.layer.shadowRadius = CSToastShadowRadius;
activityView.layer.shadowOffset = CSToastShadowOffset;
}
UIActivityIndicatorView *activityIndicatorView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
activityIndicatorView.center = CGPointMake(activityView.bounds.size.width / 2, activityView.bounds.size.height / 2);
[activityView addSubview:activityIndicatorView];
[activityIndicatorView startAnimating];
// associate the activity view with self
objc_setAssociatedObject (self, &CSToastActivityViewKey, activityView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
[self addSubview:activityView];
[UIView animateWithDuration:CSToastFadeDuration
delay:0.0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
activityView.alpha = 1.0;
} completion:nil];
}
- (void)hideToastActivity {
UIView *existingActivityView = (UIView *)objc_getAssociatedObject(self, &CSToastActivityViewKey);
if (existingActivityView != nil) {
[UIView animateWithDuration:CSToastFadeDuration
delay:0.0
options:(UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionBeginFromCurrentState)
animations:^{
existingActivityView.alpha = 0.0;
} completion:^(BOOL finished) {
[existingActivityView removeFromSuperview];
objc_setAssociatedObject (self, &CSToastActivityViewKey, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}];
}
}
#pragma mark - Helpers
- (CGPoint)centerPointForPosition:(id)point withToast:(UIView *)toast withAddedPixelsY:(int) addPixelsY {
if([point isKindOfClass:[NSString class]]) {
// convert string literals @"top", @"bottom", @"center", or any point wrapped in an NSValue object into a CGPoint
if([point caseInsensitiveCompare:@"top"] == NSOrderedSame) {
return CGPointMake(self.bounds.size.width/2, (toast.frame.size.height / 2) + addPixelsY + CSToastVerticalPadding + CSToastTopBottomOffset);
} else if([point caseInsensitiveCompare:@"bottom"] == NSOrderedSame) {
return CGPointMake(self.bounds.size.width/2, (self.bounds.size.height - (toast.frame.size.height / 2)) - CSToastVerticalPadding - CSToastTopBottomOffset + addPixelsY);
} else if([point caseInsensitiveCompare:@"center"] == NSOrderedSame) {
return CGPointMake(self.bounds.size.width / 2, (self.bounds.size.height / 2) + addPixelsY);
}
} else if ([point isKindOfClass:[NSValue class]]) {
return [point CGPointValue];
}
NSLog(@"Warning: Invalid position for toast.");
return [self centerPointForPosition:CSToastDefaultPosition withToast:toast withAddedPixelsY:addPixelsY];
}
- (CGSize)sizeForString:(NSString *)string font:(UIFont *)font constrainedToSize:(CGSize)constrainedSize lineBreakMode:(NSLineBreakMode)lineBreakMode {
if ([string respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineBreakMode = lineBreakMode;
NSDictionary *attributes = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paragraphStyle};
CGRect boundingRect = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil];
return CGSizeMake(ceilf(boundingRect.size.width), ceilf(boundingRect.size.height));
}
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
return [string sizeWithFont:font constrainedToSize:constrainedSize lineBreakMode:lineBreakMode];
#pragma clang diagnostic pop
}
- (UIView *)viewForMessage:(NSString *)message title:(NSString *)title image:(UIImage *)image {
// sanity
if((message == nil) && (title == nil) && (image == nil)) return nil;
// dynamically build a toast view with any combination of message, title, & image.
UILabel *messageLabel = nil;
UILabel *titleLabel = nil;
UIImageView *imageView = nil;
// create the parent view
UIView *wrapperView = [[UIView alloc] init];
wrapperView.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin);
NSNumber * cornerRadius = styling[@"cornerRadius"];
wrapperView.layer.cornerRadius = cornerRadius == nil ? CSToastCornerRadius : [cornerRadius floatValue];
if (CSToastDisplayShadow) {
wrapperView.layer.shadowColor = [UIColor blackColor].CGColor;
wrapperView.layer.shadowOpacity = CSToastShadowOpacity;
wrapperView.layer.shadowRadius = CSToastShadowRadius;
wrapperView.layer.shadowOffset = CSToastShadowOffset;
}
NSString * backgroundColor = styling[@"backgroundColor"];
UIColor *theColor = backgroundColor == nil ? [UIColor blackColor] : [self colorFromHexString:backgroundColor];
NSNumber * horizontalPadding = styling[@"horizontalPadding"];
CGFloat theHorizontalPadding = horizontalPadding == nil ? CSToastHorizontalPadding : [horizontalPadding floatValue];
NSNumber * verticalPadding = styling[@"verticalPadding"];
CGFloat theVerticalPadding = verticalPadding == nil ? CSToastVerticalPadding : [verticalPadding floatValue];
NSNumber * textSize = styling[@"textSize"];
CGFloat theTextSize = textSize == nil ? CSToastFontSize : [textSize floatValue];
wrapperView.backgroundColor = theColor;
if(image != nil) {
imageView = [[UIImageView alloc] initWithImage:image];
imageView.contentMode = UIViewContentModeScaleAspectFit;
imageView.frame = CGRectMake(theHorizontalPadding, theVerticalPadding, CSToastImageViewWidth, CSToastImageViewHeight);
}
CGFloat imageWidth, imageHeight, imageLeft;
// the imageView frame values will be used to size & position the other views
if(imageView != nil) {
imageWidth = imageView.bounds.size.width;
imageHeight = imageView.bounds.size.height;
imageLeft = theHorizontalPadding;
} else {
imageWidth = imageHeight = imageLeft = 0.0;
}
if (title != nil) {
NSString * titleLabelTextColor = styling[@"textColor"];
UIColor *theTitleLabelTextColor = titleLabelTextColor == nil ? [UIColor whiteColor] : [self colorFromHexString:titleLabelTextColor];
titleLabel = [[UILabel alloc] init];
titleLabel.numberOfLines = CSToastMaxTitleLines;
titleLabel.font = [UIFont boldSystemFontOfSize:theTextSize];
titleLabel.textAlignment = NSTextAlignmentCenter;
titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
titleLabel.textColor = theTitleLabelTextColor;
titleLabel.backgroundColor = [UIColor clearColor];
titleLabel.alpha = 1.0;
titleLabel.text = title;
// size the title label according to the length of the text
CGSize maxSizeTitle = CGSizeMake((self.bounds.size.width * CSToastMaxWidth) - imageWidth, self.bounds.size.height * CSToastMaxHeight);
CGSize expectedSizeTitle = [self sizeForString:title font:titleLabel.font constrainedToSize:maxSizeTitle lineBreakMode:titleLabel.lineBreakMode];
titleLabel.frame = CGRectMake(0.0, 0.0, expectedSizeTitle.width, expectedSizeTitle.height);
}
if (message != nil) {
NSString * messageLabelTextColor = styling[@"textColor"];
UIColor *theMessageLabelTextColor = messageLabelTextColor == nil ? [UIColor whiteColor] : [self colorFromHexString:messageLabelTextColor];
messageLabel = [[UILabel alloc] init];
messageLabel.numberOfLines = CSToastMaxMessageLines;
messageLabel.font = [UIFont systemFontOfSize:theTextSize];
messageLabel.lineBreakMode = NSLineBreakByWordWrapping;
messageLabel.textAlignment = NSTextAlignmentCenter;
messageLabel.textColor = theMessageLabelTextColor;
messageLabel.backgroundColor = [UIColor clearColor];
messageLabel.alpha = 1.0;
messageLabel.text = message;
// size the message label according to the length of the text
CGSize maxSizeMessage = CGSizeMake((self.bounds.size.width * CSToastMaxWidth) - imageWidth, self.bounds.size.height * CSToastMaxHeight);
CGSize expectedSizeMessage = [self sizeForString:message font:messageLabel.font constrainedToSize:maxSizeMessage lineBreakMode:messageLabel.lineBreakMode];
messageLabel.frame = CGRectMake(0.0, 0.0, expectedSizeMessage.width, expectedSizeMessage.height);
}
// titleLabel frame values
CGFloat titleWidth, titleHeight, titleTop, titleLeft;
if(titleLabel != nil) {
titleWidth = titleLabel.bounds.size.width;
titleHeight = titleLabel.bounds.size.height;
titleTop = theVerticalPadding;
titleLeft = imageLeft + imageWidth + theHorizontalPadding;
} else {
titleWidth = titleHeight = titleTop = titleLeft = 0.0;
}
// messageLabel frame values
CGFloat messageWidth, messageHeight, messageLeft, messageTop;
if(messageLabel != nil) {
messageWidth = messageLabel.bounds.size.width;
messageHeight = messageLabel.bounds.size.height;
messageLeft = imageLeft + imageWidth + theHorizontalPadding;
messageTop = titleTop + titleHeight + theVerticalPadding;
} else {
messageWidth = messageHeight = messageLeft = messageTop = 0.0;
}
CGFloat longerWidth = MAX(titleWidth, messageWidth);
CGFloat longerLeft = MAX(titleLeft, messageLeft);
// wrapper width uses the longerWidth or the image width, whatever is larger. same logic applies to the wrapper height
CGFloat wrapperWidth = MAX((imageWidth + (theHorizontalPadding * 2)), (longerLeft + longerWidth + theHorizontalPadding));
CGFloat wrapperHeight = MAX((messageTop + messageHeight + theVerticalPadding), (imageHeight + (theVerticalPadding * 2)));
wrapperView.frame = CGRectMake(0.0, 0.0, wrapperWidth, wrapperHeight);
if(titleLabel != nil) {
titleLabel.frame = CGRectMake(titleLeft, titleTop, titleWidth, titleHeight);
[wrapperView addSubview:titleLabel];
}
if(messageLabel != nil) {
messageLabel.frame = CGRectMake(messageLeft, messageTop, messageWidth, messageHeight);
[wrapperView addSubview:messageLabel];
}
if(imageView != nil) {
[wrapperView addSubview:imageView];
}
return wrapperView;
}
// Assumes input like "#00FF00" (#RRGGBB)
- (UIColor*) colorFromHexString:(NSString*) hexString {
unsigned rgbValue = 0;
NSScanner *scanner = [NSScanner scannerWithString:hexString];
[scanner setScanLocation:1]; // bypass '#' character
[scanner scanHexInt:&rgbValue];
return [UIColor colorWithRed:((rgbValue & 0xFF0000) >> 16) / 255.0 green:((rgbValue & 0xFF00) >> 8) / 255.0 blue:(rgbValue & 0xFF) / 255.0 alpha:1.0];
}
@end