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//
// RMUniversalAlert.m
// RMUniversalAlert
//
// Created by Ryan Maxwell on 19/11/14.
// Copyright (c) 2014 Ryan Maxwell. All rights reserved.
//
#import "UIAlertView+Blocks.h"
#import "UIActionSheet+Blocks.h"
#import "UIAlertController+Blocks.h"
#import "objc/runtime.h"
#import "RMUniversalAlert.h"
static NSInteger const RMUniversalAlertNoButtonExistsIndex = -1;
static NSInteger const RMUniversalAlertCancelButtonIndex = 0;
static NSInteger const RMUniversalAlertDestructiveButtonIndex = 1;
static NSInteger const RMUniversalAlertFirstOtherButtonIndex = 2;
@interface RMUniversalAlert ()
@property (nonatomic) UIAlertController *alertController;
@property (nonatomic) UIAlertView *alertView;
@property (nonatomic) UIActionSheet *actionSheet;
@property (nonatomic, assign) BOOL hasCancelButton;
@property (nonatomic, assign) BOOL hasDestructiveButton;
@property (nonatomic, assign) BOOL hasOtherButtons;
@end
@implementation RMUniversalAlert
+ (instancetype)showAlertInViewController:(UIViewController *)viewController
withTitle:(NSString *)title
message:(NSString *)message
cancelButtonTitle:(NSString *)cancelButtonTitle
destructiveButtonTitle:(NSString *)destructiveButtonTitle
otherButtonTitles:(NSArray *)otherButtonTitles
tapBlock:(RMUniversalAlertCompletionBlock)tapBlock
{
RMUniversalAlert *alert = [[RMUniversalAlert alloc] init];
alert.hasCancelButton = cancelButtonTitle != nil;
alert.hasDestructiveButton = destructiveButtonTitle != nil;
alert.hasOtherButtons = otherButtonTitles.count > 0;
__weak RMUniversalAlert *weakAlert = alert;
__weak UIViewController *weakViewController = viewController;
NSString *alertRefString = [NSString stringWithFormat:@"%p",alert];
objc_setAssociatedObject(viewController, (__bridge void *)alertRefString, alert, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
if ([UIAlertController class]) {
alert.alertController = [UIAlertController showAlertInViewController:viewController
withTitle:title message:message
cancelButtonTitle:cancelButtonTitle
destructiveButtonTitle:destructiveButtonTitle
otherButtonTitles:otherButtonTitles
tapBlock:^(UIAlertController *controller, UIAlertAction *action, NSInteger buttonIndex){
__strong RMUniversalAlert *strongAlert = weakAlert;
__strong UIViewController *strongViewController = weakViewController;
if (tapBlock) {
tapBlock(strongAlert, buttonIndex);
}
objc_setAssociatedObject(strongViewController, (__bridge void *)alertRefString, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}];
} else {
NSMutableArray *other = [NSMutableArray array];
if (destructiveButtonTitle) {
[other addObject:destructiveButtonTitle];
}
if (otherButtonTitles) {
[other addObjectsFromArray:otherButtonTitles];
}
alert.alertView = [UIAlertView showWithTitle:title
message:message
cancelButtonTitle:cancelButtonTitle
otherButtonTitles:other
tapBlock:^(UIAlertView *alertView, NSInteger buttonIndex){
__strong RMUniversalAlert *strongAlert = weakAlert;
__strong UIViewController *strongViewController = weakViewController;
if (tapBlock) {
if (buttonIndex == alertView.cancelButtonIndex) {
tapBlock(strongAlert, RMUniversalAlertCancelButtonIndex);
} else if (destructiveButtonTitle) {
if (buttonIndex == alertView.firstOtherButtonIndex) {
tapBlock(strongAlert, RMUniversalAlertDestructiveButtonIndex);
} else if (otherButtonTitles.count) {
NSInteger otherOffset = buttonIndex - alertView.firstOtherButtonIndex;
tapBlock(strongAlert, RMUniversalAlertFirstOtherButtonIndex + otherOffset - 1);
}
} else if (otherButtonTitles.count) {
NSInteger otherOffset = buttonIndex - alertView.firstOtherButtonIndex;
tapBlock(strongAlert, RMUniversalAlertFirstOtherButtonIndex + otherOffset);
}
}
objc_setAssociatedObject(strongViewController, (__bridge void *)alertRefString, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}];
}
return alert;
}
+ (instancetype)showActionSheetInViewController:(UIViewController *)viewController
withTitle:(NSString *)title
message:(NSString *)message
cancelButtonTitle:(NSString *)cancelButtonTitle
destructiveButtonTitle:(NSString *)destructiveButtonTitle
otherButtonTitles:(NSArray *)otherButtonTitles
popoverPresentationControllerBlock:(void(^)(RMPopoverPresentationController *popover))popoverPresentationControllerBlock
tapBlock:(RMUniversalAlertCompletionBlock)tapBlock
{
RMUniversalAlert *alert = [[RMUniversalAlert alloc] init];
alert.hasCancelButton = cancelButtonTitle != nil;
alert.hasDestructiveButton = destructiveButtonTitle != nil;
alert.hasOtherButtons = otherButtonTitles.count > 0;
__weak RMUniversalAlert *weakAlert = alert;
__weak UIViewController *weakViewController = viewController;
NSString *alertRefString = [NSString stringWithFormat:@"%p",alert];
objc_setAssociatedObject(viewController, (__bridge void *)alertRefString, alert, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
if ([UIAlertController class]) {
alert.alertController = [UIAlertController showActionSheetInViewController:viewController
withTitle:title
message:message
cancelButtonTitle:cancelButtonTitle
destructiveButtonTitle:destructiveButtonTitle
otherButtonTitles:otherButtonTitles
popoverPresentationControllerBlock:^(UIPopoverPresentationController *popover){
if (popoverPresentationControllerBlock) {
RMPopoverPresentationController *configuredPopover = [RMPopoverPresentationController new];
popoverPresentationControllerBlock(configuredPopover);
popover.sourceView = configuredPopover.sourceView;
popover.sourceRect = configuredPopover.sourceRect;
popover.barButtonItem = configuredPopover.barButtonItem;
}
}
tapBlock:^(UIAlertController *controller, UIAlertAction *action, NSInteger buttonIndex){
__strong RMUniversalAlert *strongAlert = weakAlert;
__strong UIViewController *strongViewController = weakViewController;
if (tapBlock) {
tapBlock(strongAlert, buttonIndex);
}
objc_setAssociatedObject(strongViewController, (__bridge void *)alertRefString, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}];
} else {
void(^actionSheetTapBlock)(UIActionSheet *actionSheet, NSInteger buttonIndex) = ^(UIActionSheet *actionSheet, NSInteger buttonIndex){
__strong RMUniversalAlert *strongAlert = weakAlert;
__strong UIViewController *strongViewController = weakViewController;
if (tapBlock) {
if (buttonIndex == actionSheet.cancelButtonIndex) {
tapBlock(strongAlert, RMUniversalAlertCancelButtonIndex);
} else if (buttonIndex == actionSheet.destructiveButtonIndex) {
tapBlock(strongAlert, RMUniversalAlertDestructiveButtonIndex);
} else if (otherButtonTitles.count) {
NSInteger otherOffset = buttonIndex - actionSheet.firstOtherButtonIndex;
tapBlock(strongAlert, RMUniversalAlertFirstOtherButtonIndex + otherOffset);
}
}
objc_setAssociatedObject(strongViewController, (__bridge void *)alertRefString, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
};
void (^standardActionSheetBlock)(void) = ^{
__strong RMUniversalAlert *strongAlert = weakAlert;
__strong UIViewController *strongViewController = weakViewController;
strongAlert.actionSheet = [UIActionSheet showInView:strongViewController.view
withTitle:title
cancelButtonTitle:cancelButtonTitle
destructiveButtonTitle:destructiveButtonTitle
otherButtonTitles:otherButtonTitles
tapBlock:actionSheetTapBlock];
objc_setAssociatedObject(strongViewController, (__bridge void *)alertRefString, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
};
if (popoverPresentationControllerBlock) {
RMPopoverPresentationController *configuredPopover = [RMPopoverPresentationController new];
popoverPresentationControllerBlock(configuredPopover);
if (configuredPopover.barButtonItem) {
alert.actionSheet = [UIActionSheet showFromBarButtonItem:configuredPopover.barButtonItem
animated:YES
withTitle:title
cancelButtonTitle:cancelButtonTitle
destructiveButtonTitle:destructiveButtonTitle
otherButtonTitles:otherButtonTitles
tapBlock:actionSheetTapBlock];
} else if (configuredPopover.sourceView) {
alert.actionSheet = [UIActionSheet showFromRect:configuredPopover.sourceRect
inView:configuredPopover.sourceView
animated:YES
withTitle:title
cancelButtonTitle:cancelButtonTitle
destructiveButtonTitle:destructiveButtonTitle
otherButtonTitles:otherButtonTitles
tapBlock:actionSheetTapBlock];
} else {
standardActionSheetBlock();
}
} else {
standardActionSheetBlock();
}
}
return alert;
}
#pragma mark -
-(void)dismissAlertAnimated:(BOOL)animated {
if (self.alertController) {
[self.alertController dismissViewControllerAnimated:animated completion:nil];
} else if (self.alertView) {
[self.alertView dismissWithClickedButtonIndex:self.alertView.cancelButtonIndex animated:animated];
} else if (self.actionSheet) {
[self.actionSheet dismissWithClickedButtonIndex:self.actionSheet.cancelButtonIndex animated:animated];
}
}
- (BOOL)visible
{
if (self.alertController) {
return self.alertController.visible;
} else if (self.alertView) {
return self.alertView.visible;
} else if (self.actionSheet) {
return self.actionSheet.visible;
}
NSAssert(false, @"Unsupported alert.");
return NO;
}
- (NSInteger)cancelButtonIndex
{
if (!self.hasCancelButton) {
return RMUniversalAlertNoButtonExistsIndex;
}
return RMUniversalAlertCancelButtonIndex;
}
- (NSInteger)firstOtherButtonIndex
{
if (!self.hasOtherButtons) {
return RMUniversalAlertNoButtonExistsIndex;
}
return RMUniversalAlertFirstOtherButtonIndex;
}
- (NSInteger)destructiveButtonIndex
{
if (!self.hasDestructiveButton) {
return RMUniversalAlertNoButtonExistsIndex;
}
return RMUniversalAlertDestructiveButtonIndex;
}
@end