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| 1 | +/** |
| 2 | + * Copyright (c) 2015-present, Facebook, Inc. |
| 3 | + * All rights reserved. |
| 4 | + * |
| 5 | + * This source code is licensed under the BSD-style license found in the |
| 6 | + * LICENSE file in the root directory of this source tree. An additional grant |
| 7 | + * of patent rights can be found in the PATENTS file in the same directory. |
| 8 | + */ |
| 9 | + |
| 10 | +#import "RCTTextView.h" |
| 11 | + |
| 12 | +#import "RCTConvert.h" |
| 13 | +#import "RCTEventDispatcher.h" |
| 14 | +#import "RCTUtils.h" |
| 15 | +#import "UIView+React.h" |
| 16 | + |
| 17 | +@implementation RCTTextView |
| 18 | +{ |
| 19 | + RCTEventDispatcher *_eventDispatcher; |
| 20 | + BOOL _jsRequestingFirstResponder; |
| 21 | + NSString *_placeholder; |
| 22 | + UITextView *_placeholderView; |
| 23 | + UITextView *_textView; |
| 24 | +} |
| 25 | + |
| 26 | +- (instancetype)initWithEventDispatcher:(RCTEventDispatcher *)eventDispatcher |
| 27 | +{ |
| 28 | + if ((self = [super initWithFrame:CGRectZero])) { |
| 29 | + _contentInset = UIEdgeInsetsZero; |
| 30 | + _eventDispatcher = eventDispatcher; |
| 31 | + _placeholderTextColor = [self defaultPlaceholderTextColor]; |
| 32 | + |
| 33 | + _textView = [[UITextView alloc] initWithFrame:self.bounds]; |
| 34 | + _textView.backgroundColor = [UIColor clearColor]; |
| 35 | + _textView.delegate = self; |
| 36 | + [self addSubview:_textView]; |
| 37 | + } |
| 38 | + |
| 39 | + return self; |
| 40 | +} |
| 41 | + |
| 42 | +- (void)updateFrames |
| 43 | +{ |
| 44 | + // Adjust the insets so that they are as close as possible to single-line |
| 45 | + // RCTTextField defaults |
| 46 | + UIEdgeInsets adjustedInset = (UIEdgeInsets){ |
| 47 | + _contentInset.top - 5, _contentInset.left - 4, |
| 48 | + _contentInset.bottom, _contentInset.right |
| 49 | + }; |
| 50 | + |
| 51 | + [_textView setFrame:UIEdgeInsetsInsetRect(self.bounds, adjustedInset)]; |
| 52 | + [_placeholderView setFrame:UIEdgeInsetsInsetRect(self.bounds, adjustedInset)]; |
| 53 | +} |
| 54 | + |
| 55 | +- (void)updatePlaceholder |
| 56 | +{ |
| 57 | + [_placeholderView removeFromSuperview]; |
| 58 | + _placeholderView = nil; |
| 59 | + |
| 60 | + if (_placeholder) { |
| 61 | + _placeholderView = [[UITextView alloc] initWithFrame:self.bounds]; |
| 62 | + _placeholderView.backgroundColor = [UIColor clearColor]; |
| 63 | + _placeholderView.scrollEnabled = false; |
| 64 | + _placeholderView.attributedText = |
| 65 | + [[NSAttributedString alloc] initWithString:_placeholder attributes:@{ |
| 66 | + NSFontAttributeName : (_textView.font ? _textView.font : [self defaultPlaceholderFont]), |
| 67 | + NSForegroundColorAttributeName : _placeholderTextColor |
| 68 | + }]; |
| 69 | + |
| 70 | + [self insertSubview:_placeholderView belowSubview:_textView]; |
| 71 | + [self _setPlaceholderVisibility]; |
| 72 | + } |
| 73 | +} |
| 74 | + |
| 75 | +- (void)setFont:(UIFont *)font |
| 76 | +{ |
| 77 | + _font = font; |
| 78 | + _textView.font = _font; |
| 79 | + [self updatePlaceholder]; |
| 80 | +} |
| 81 | + |
| 82 | +- (void)setTextColor:(UIColor *)textColor |
| 83 | +{ |
| 84 | + _textView.textColor = textColor; |
| 85 | +} |
| 86 | + |
| 87 | +- (void)setPlaceholder:(NSString *)placeholder |
| 88 | +{ |
| 89 | + _placeholder = placeholder; |
| 90 | + [self updatePlaceholder]; |
| 91 | +} |
| 92 | + |
| 93 | +- (void)setPlaceholderTextColor:(UIColor *)placeholderTextColor |
| 94 | +{ |
| 95 | + if (placeholderTextColor) { |
| 96 | + _placeholderTextColor = placeholderTextColor; |
| 97 | + } else { |
| 98 | + _placeholderTextColor = [self defaultPlaceholderTextColor]; |
| 99 | + } |
| 100 | + [self updatePlaceholder]; |
| 101 | +} |
| 102 | + |
| 103 | +- (void)setContentInset:(UIEdgeInsets)contentInset |
| 104 | +{ |
| 105 | + _contentInset = contentInset; |
| 106 | + [self updateFrames]; |
| 107 | +} |
| 108 | + |
| 109 | +- (void)setText:(NSString *)text |
| 110 | +{ |
| 111 | + if (![text isEqualToString:_textView.text]) { |
| 112 | + [_textView setText:text]; |
| 113 | + [self _setPlaceholderVisibility]; |
| 114 | + } |
| 115 | +} |
| 116 | + |
| 117 | +- (void)_setPlaceholderVisibility |
| 118 | +{ |
| 119 | + if (_textView.text.length > 0) { |
| 120 | + [_placeholderView setHidden:YES]; |
| 121 | + } else { |
| 122 | + [_placeholderView setHidden:NO]; |
| 123 | + } |
| 124 | +} |
| 125 | + |
| 126 | +- (void)setAutoCorrect:(BOOL)autoCorrect |
| 127 | +{ |
| 128 | + _textView.autocorrectionType = (autoCorrect ? UITextAutocorrectionTypeYes : UITextAutocorrectionTypeNo); |
| 129 | +} |
| 130 | + |
| 131 | +- (BOOL)autoCorrect |
| 132 | +{ |
| 133 | + return _textView.autocorrectionType == UITextAutocorrectionTypeYes; |
| 134 | +} |
| 135 | + |
| 136 | +- (void)textViewDidBeginEditing:(UITextView *)textView |
| 137 | +{ |
| 138 | + [_eventDispatcher sendTextEventWithType:RCTTextEventTypeFocus |
| 139 | + reactTag:self.reactTag |
| 140 | + text:textView.text]; |
| 141 | +} |
| 142 | + |
| 143 | +- (void)textViewDidChange:(UITextView *)textView |
| 144 | +{ |
| 145 | + [self _setPlaceholderVisibility]; |
| 146 | + [_eventDispatcher sendTextEventWithType:RCTTextEventTypeChange |
| 147 | + reactTag:self.reactTag |
| 148 | + text:textView.text]; |
| 149 | + |
| 150 | +} |
| 151 | + |
| 152 | +- (void)textViewDidEndEditing:(UITextView *)textView |
| 153 | +{ |
| 154 | + [_eventDispatcher sendTextEventWithType:RCTTextEventTypeEnd |
| 155 | + reactTag:self.reactTag |
| 156 | + text:textView.text]; |
| 157 | +} |
| 158 | + |
| 159 | +- (BOOL)becomeFirstResponder |
| 160 | +{ |
| 161 | + _jsRequestingFirstResponder = YES; |
| 162 | + BOOL result = [super becomeFirstResponder]; |
| 163 | + _jsRequestingFirstResponder = NO; |
| 164 | + return result; |
| 165 | +} |
| 166 | + |
| 167 | +- (BOOL)resignFirstResponder |
| 168 | +{ |
| 169 | + BOOL result = [super resignFirstResponder]; |
| 170 | + if (result) { |
| 171 | + [_eventDispatcher sendTextEventWithType:RCTTextEventTypeBlur |
| 172 | + reactTag:self.reactTag |
| 173 | + text:_textView.text]; |
| 174 | + } |
| 175 | + return result; |
| 176 | +} |
| 177 | + |
| 178 | +- (void)layoutSubviews |
| 179 | +{ |
| 180 | + [super layoutSubviews]; |
| 181 | + [self updateFrames]; |
| 182 | +} |
| 183 | + |
| 184 | +- (BOOL)canBecomeFirstResponder |
| 185 | +{ |
| 186 | + return _jsRequestingFirstResponder; |
| 187 | +} |
| 188 | + |
| 189 | +- (UIFont *)defaultPlaceholderFont |
| 190 | +{ |
| 191 | + return [UIFont fontWithName:@"Helvetica" size:17]; |
| 192 | +} |
| 193 | + |
| 194 | +- (UIColor *)defaultPlaceholderTextColor |
| 195 | +{ |
| 196 | + return [UIColor colorWithRed:0.0/255.0 green:0.0/255.0 blue:0.098/255.0 alpha:0.22]; |
| 197 | +} |
| 198 | + |
| 199 | +@end |
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