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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTAlertManager.h"
#import "RCTAssert.h"
#import "RCTConvert.h"
#import "RCTLog.h"
#import "RCTUtils.h"
@implementation RCTConvert (UIAlertViewStyle)
RCT_ENUM_CONVERTER(RCTAlertViewStyle, (@{
@"default": @(RCTAlertViewStyleDefault),
@"secure-text": @(RCTAlertViewStyleSecureTextInput),
@"plain-text": @(RCTAlertViewStylePlainTextInput),
@"login-password": @(RCTAlertViewStyleLoginAndPasswordInput),
}), RCTAlertViewStyleDefault, integerValue)
@end
@interface RCTAlertManager()
@end
@implementation RCTAlertManager
{
NSHashTable *_alertControllers;
}
RCT_EXPORT_MODULE()
- (dispatch_queue_t)methodQueue
{
return dispatch_get_main_queue();
}
- (void)invalidate
{
for (UIAlertController *alertController in _alertControllers) {
[alertController.presentingViewController dismissViewControllerAnimated:YES completion:nil];
}
}
/**
* @param {NSDictionary} args Dictionary of the form
*
* @{
* @"message": @"<Alert message>",
* @"buttons": @[
* @{@"<key1>": @"<title1>"},
* @{@"<key2>": @"<title2>"},
* ],
* @"cancelButtonKey": @"<key2>",
* }
* The key from the `buttons` dictionary is passed back in the callback on click.
* Buttons are displayed in the order they are specified.
*/
RCT_EXPORT_METHOD(alertWithArgs:(NSDictionary *)args
callback:(RCTResponseSenderBlock)callback)
{
NSString *title = [RCTConvert NSString:args[@"title"]];
NSString *message = [RCTConvert NSString:args[@"message"]];
RCTAlertViewStyle type = [RCTConvert RCTAlertViewStyle:args[@"type"]];
NSArray<NSDictionary *> *buttons = [RCTConvert NSDictionaryArray:args[@"buttons"]];
NSString *defaultValue = [RCTConvert NSString:args[@"defaultValue"]];
NSString *cancelButtonKey = [RCTConvert NSString:args[@"cancelButtonKey"]];
NSString *destructiveButtonKey = [RCTConvert NSString:args[@"destructiveButtonKey"]];
UIKeyboardType keyboardType = [RCTConvert UIKeyboardType:args[@"keyboardType"]];
if (!title && !message) {
RCTLogError(@"Must specify either an alert title, or message, or both");
return;
}
if (buttons.count == 0) {
if (type == RCTAlertViewStyleDefault) {
buttons = @[@{@"0": RCTUIKitLocalizedString(@"OK")}];
cancelButtonKey = @"0";
} else {
buttons = @[
@{@"0": RCTUIKitLocalizedString(@"OK")},
@{@"1": RCTUIKitLocalizedString(@"Cancel")},
];
cancelButtonKey = @"1";
}
}
UIViewController *presentingController = RCTPresentedViewController();
if (presentingController == nil) {
RCTLogError(@"Tried to display alert view but there is no application window. args: %@", args);
return;
}
UIAlertController *alertController = [UIAlertController
alertControllerWithTitle:title
message:nil
preferredStyle:UIAlertControllerStyleAlert];
switch (type) {
case RCTAlertViewStylePlainTextInput: {
[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.secureTextEntry = NO;
textField.text = defaultValue;
textField.keyboardType = keyboardType;
}];
break;
}
case RCTAlertViewStyleSecureTextInput: {
[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.placeholder = RCTUIKitLocalizedString(@"Password");
textField.secureTextEntry = YES;
textField.text = defaultValue;
textField.keyboardType = keyboardType;
}];
break;
}
case RCTAlertViewStyleLoginAndPasswordInput: {
[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.placeholder = RCTUIKitLocalizedString(@"Login");
textField.text = defaultValue;
textField.keyboardType = keyboardType;
}];
[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.placeholder = RCTUIKitLocalizedString(@"Password");
textField.secureTextEntry = YES;
}];
break;
}
case RCTAlertViewStyleDefault:
break;
}
alertController.message = message;
for (NSDictionary<NSString *, id> *button in buttons) {
if (button.count != 1) {
RCTLogError(@"Button definitions should have exactly one key.");
}
NSString *buttonKey = button.allKeys.firstObject;
NSString *buttonTitle = [RCTConvert NSString:button[buttonKey]];
UIAlertActionStyle buttonStyle = UIAlertActionStyleDefault;
if ([buttonKey isEqualToString:cancelButtonKey]) {
buttonStyle = UIAlertActionStyleCancel;
} else if ([buttonKey isEqualToString:destructiveButtonKey]) {
buttonStyle = UIAlertActionStyleDestructive;
}
__weak UIAlertController *weakAlertController = alertController;
[alertController addAction:[UIAlertAction actionWithTitle:buttonTitle
style:buttonStyle
handler:^(__unused UIAlertAction *action) {
switch (type) {
case RCTAlertViewStylePlainTextInput:
case RCTAlertViewStyleSecureTextInput:
callback(@[buttonKey, [weakAlertController.textFields.firstObject text]]);
break;
case RCTAlertViewStyleLoginAndPasswordInput: {
NSDictionary<NSString *, NSString *> *loginCredentials = @{
@"login": [weakAlertController.textFields.firstObject text],
@"password": [weakAlertController.textFields.lastObject text]
};
callback(@[buttonKey, loginCredentials]);
break;
}
case RCTAlertViewStyleDefault:
callback(@[buttonKey]);
break;
}
}]];
}
if (!_alertControllers) {
_alertControllers = [NSHashTable weakObjectsHashTable];
}
[_alertControllers addObject:alertController];
[presentingController presentViewController:alertController animated:YES completion:nil];
}
@end