178 lines
5.6 KiB
Mathematica
178 lines
5.6 KiB
Mathematica
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTBackedTextInputDelegateAdapter.h"
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#pragma mark - RCTBackedTextFieldDelegateAdapter (for UITextField)
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static void *TextFieldSelectionObservingContext = &TextFieldSelectionObservingContext;
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@interface RCTBackedTextFieldDelegateAdapter () <UITextFieldDelegate>
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@end
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@implementation RCTBackedTextFieldDelegateAdapter {
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__weak UITextField<RCTBackedTextInputViewProtocol> *_backedTextInput;
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__unsafe_unretained UITextField<RCTBackedTextInputViewProtocol> *_unsafeBackedTextInput;
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}
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- (instancetype)initWithTextField:(UITextField<RCTBackedTextInputViewProtocol> *)backedTextInput
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{
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if (self = [super init]) {
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_backedTextInput = backedTextInput;
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_unsafeBackedTextInput = backedTextInput;
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backedTextInput.delegate = self;
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[_backedTextInput addTarget:self action:@selector(textFieldDidChange) forControlEvents:UIControlEventEditingChanged];
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[_backedTextInput addTarget:self action:@selector(textFieldDidEndEditingOnExit) forControlEvents:UIControlEventEditingDidEndOnExit];
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// We have to use `unsafe_unretained` pointer to `backedTextInput` for subscribing (and especially unsubscribing) for it
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// because `weak` pointers do not KVO complient, unfortunately.
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[_unsafeBackedTextInput addObserver:self forKeyPath:@"selectedTextRange" options:0 context:TextFieldSelectionObservingContext];
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}
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return self;
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}
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- (void)dealloc
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{
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[_backedTextInput removeTarget:self action:nil forControlEvents:UIControlEventEditingChanged];
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[_backedTextInput removeTarget:self action:nil forControlEvents:UIControlEventEditingDidEndOnExit];
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[_unsafeBackedTextInput removeObserver:self forKeyPath:@"selectedTextRange" context:TextFieldSelectionObservingContext];
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}
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#pragma mark - UITextFieldDelegate
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- (BOOL)textFieldShouldBeginEditing:(__unused UITextField *)textField
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{
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return [_backedTextInput.textInputDelegate textInputShouldBeginEditing];
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}
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- (void)textFieldDidBeginEditing:(__unused UITextField *)textField
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{
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[_backedTextInput.textInputDelegate textInputDidBeginEditing];
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}
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- (BOOL)textFieldShouldEndEditing:(__unused UITextField *)textField
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{
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return [_backedTextInput.textInputDelegate textInputShouldEndEditing];
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}
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- (void)textFieldDidEndEditing:(__unused UITextField *)textField
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{
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[_backedTextInput.textInputDelegate textInputDidEndEditing];
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}
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- (BOOL)textField:(__unused UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
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{
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return [_backedTextInput.textInputDelegate textInputShouldChangeTextInRange:range replacementText:string];
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}
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#pragma mark - Key Value Observing
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- (void)observeValueForKeyPath:(NSString *)keyPath
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ofObject:(nullable id)object
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change:(NSDictionary *)change
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context:(void *)context
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{
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if (context == TextFieldSelectionObservingContext) {
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if ([keyPath isEqualToString:@"selectedTextRange"]) {
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[_backedTextInput.textInputDelegate textInputDidChangeSelection];
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}
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return;
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}
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[super observeValueForKeyPath:keyPath
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ofObject:object
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change:change
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context:context];
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}
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#pragma mark - UIControlEventEditing* Family Events
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- (void)textFieldDidChange
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{
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[_backedTextInput.textInputDelegate textInputDidChange];
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}
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- (void)textFieldDidEndEditingOnExit
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{
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[_backedTextInput.textInputDelegate textInputDidEndEditingOnExit];
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}
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#pragma mark - UIKeyboardInput (private UIKit protocol)
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// This method allows us to detect a [Backspace] `keyPress`
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// even when there is no more text in the `UITextField`.
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- (BOOL)keyboardInputShouldDelete:(__unused UITextField *)textField
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{
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[_backedTextInput.textInputDelegate textInputShouldChangeTextInRange:NSMakeRange(0, 0) replacementText:@""];
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return YES;
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}
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@end
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#pragma mark - RCTBackedTextViewDelegateAdapter (for UITextView)
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@interface RCTBackedTextViewDelegateAdapter () <UITextViewDelegate>
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@end
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@implementation RCTBackedTextViewDelegateAdapter {
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__weak UITextView<RCTBackedTextInputViewProtocol> *_backedTextInput;
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}
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- (instancetype)initWithTextView:(UITextView<RCTBackedTextInputViewProtocol> *)backedTextInput
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{
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if (self = [super init]) {
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_backedTextInput = backedTextInput;
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backedTextInput.delegate = self;
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}
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return self;
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}
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#pragma mark - UITextViewDelegate
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- (BOOL)textViewShouldBeginEditing:(__unused UITextView *)textView
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{
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return [_backedTextInput.textInputDelegate textInputShouldBeginEditing];
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}
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- (void)textViewDidBeginEditing:(__unused UITextView *)textView
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{
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[_backedTextInput.textInputDelegate textInputDidBeginEditing];
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}
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- (BOOL)textViewShouldEndEditing:(__unused UITextView *)textView
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{
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return [_backedTextInput.textInputDelegate textInputShouldEndEditing];
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}
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- (void)textViewDidEndEditing:(__unused UITextView *)textView
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{
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[_backedTextInput.textInputDelegate textInputDidEndEditing];
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}
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- (BOOL)textView:(__unused UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
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{
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return [_backedTextInput.textInputDelegate textInputShouldChangeTextInRange:range replacementText:text];
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}
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- (void)textViewDidChange:(__unused UITextView *)textView
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{
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[_backedTextInput.textInputDelegate textInputDidChange];
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}
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- (void)textViewDidChangeSelection:(__unused UITextView *)textView
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{
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[_backedTextInput.textInputDelegate textInputDidChangeSelection];
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}
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@end
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