| // Copyright 2017-present the Material Components for iOS authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #import "MDCTextInputControllerFullWidth.h" |
| |
| #import "MDCIntrinsicHeightTextView.h" |
| #import "MDCMultilineTextField.h" |
| #import "MDCTextField.h" |
| #import "MDCTextInput.h" |
| #import "MDCTextInputCharacterCounter.h" |
| #import "MDCTextInputController.h" |
| #import "MDCTextInputUnderlineView.h" |
| |
| #import "MaterialPalettes.h" |
| #import "MaterialTypography.h" |
| |
| static const CGFloat MDCTextInputControllerFullWidthHintTextOpacity = (CGFloat)0.54; |
| static const CGFloat MDCTextInputControllerFullWidthHorizontalInnerPadding = 8; |
| static const CGFloat MDCTextInputControllerFullWidthHorizontalPadding = 16; |
| static const CGFloat MDCTextInputControllerFullWidthVerticalPadding = 20; |
| |
| static inline UIColor *MDCTextInputControllerFullWidthInlinePlaceholderTextColorDefault() { |
| return [UIColor colorWithWhite:0 alpha:MDCTextInputControllerFullWidthHintTextOpacity]; |
| } |
| |
| static inline UIColor *MDCTextInputControllerFullWidthErrorColorDefault() { |
| return [MDCPalette redPalette].accent400; |
| } |
| |
| #pragma mark - Class Properties |
| |
| static BOOL _mdc_adjustsFontForContentSizeCategoryDefault = NO; |
| static UIColor *_backgroundColorDefault; |
| static UIColor *_errorColorDefault; |
| static UIColor *_inlinePlaceholderColorDefault; |
| static UIColor *_trailingUnderlineLabelTextColorDefault; |
| |
| static UIFont *_inlinePlaceholderFontDefault; |
| static UIFont *_textInputFontDefault; |
| static UIColor *_textInputClearButtonTintColorDefault; |
| static UIFont *_trailingUnderlineLabelFontDefault; |
| |
| @interface MDCTextInputControllerFullWidth () { |
| BOOL _mdc_adjustsFontForContentSizeCategory; |
| |
| MDCTextInputAllCharactersCounter *_characterCounter; |
| |
| UIColor *_backgroundColor; |
| UIColor *_errorColor; |
| UIColor *_inlinePlaceholderColor; |
| UIColor *_trailingUnderlineLabelTextColor; |
| |
| UIFont *_inlinePlaceholderFont; |
| UIFont *_textInputFont; |
| UIColor *_textInputClearButtonTintColor; |
| UIFont *_trailingUnderlineLabelFont; |
| } |
| |
| @property(nonatomic, assign, readonly) BOOL isDisplayingCharacterCountError; |
| |
| @property(nonatomic, strong) MDCTextInputAllCharactersCounter *internalCharacterCounter; |
| |
| @property(nonatomic, strong) NSLayoutConstraint *characterCountY; |
| @property(nonatomic, strong) NSLayoutConstraint *characterCountTrailing; |
| @property(nonatomic, strong) NSLayoutConstraint *clearButtonY; |
| @property(nonatomic, strong) NSLayoutConstraint *clearButtonTrailingCharacterCountLeading; |
| @property(nonatomic, strong) NSLayoutConstraint *multilineCharacterCountHeight; |
| @property(nonatomic, strong) NSLayoutConstraint *multilinePlaceholderCenterY; |
| @property(nonatomic, strong) NSLayoutConstraint *multilineTextViewBottom; |
| @property(nonatomic, strong) NSLayoutConstraint *multilineTextViewTop; |
| @property(nonatomic, strong) NSLayoutConstraint *placeholderLeading; |
| @property(nonatomic, strong) NSLayoutConstraint *placeholderTrailingCharacterCountLeading; |
| @property(nonatomic, strong) NSLayoutConstraint *placeholderTrailingSuperviewTrailing; |
| |
| @property(nonatomic, copy) NSString *errorAccessibilityValue; |
| @property(nonatomic, copy, readwrite) NSString *errorText; |
| @property(nonatomic, copy) NSString *helperAccessibilityLabel; |
| @property(nonatomic, copy) NSString *previousLeadingText; |
| |
| @property(nonatomic, strong) UIColor *previousPlaceholderColor; |
| |
| @end |
| |
| @implementation MDCTextInputControllerFullWidth |
| |
| @synthesize backgroundColor = _backgroundColor; |
| @synthesize characterCountMax = _characterCountMax; |
| @synthesize characterCountViewMode = _characterCountViewMode; |
| @synthesize textInput = _textInput; |
| |
| // TODO: (larche): Support in-line auto complete. |
| |
| - (instancetype)init { |
| self = [super init]; |
| if (self) { |
| [self commonMDCTextInputControllerFullWidthInitialization]; |
| } |
| |
| return self; |
| } |
| |
| - (instancetype)initWithCoder:(NSCoder *)aDecoder { |
| self = [super init]; |
| if (self) { |
| [self commonMDCTextInputControllerFullWidthInitialization]; |
| } |
| return self; |
| } |
| |
| - (instancetype)initWithTextInput:(UIView<MDCTextInput> *)textInput { |
| self = [self init]; |
| if (self) { |
| _textInput = textInput; |
| |
| [self setupInput]; |
| } |
| return self; |
| } |
| |
| - (instancetype)copyWithZone:(__unused NSZone *)zone { |
| MDCTextInputControllerFullWidth *copy = [[[self class] alloc] init]; |
| |
| copy.characterCounter = self.characterCounter; // Just a pointer value copy |
| copy.characterCountViewMode = self.characterCountViewMode; |
| copy.characterCountMax = self.characterCountMax; |
| copy.errorAccessibilityValue = [self.errorAccessibilityValue copy]; |
| copy.errorColor = self.errorColor; |
| copy.errorText = [self.errorText copy]; |
| copy.helperText = [self.helperText copy]; |
| copy.inlinePlaceholderColor = self.inlinePlaceholderColor; |
| copy.inlinePlaceholderFont = self.inlinePlaceholderFont; |
| copy.previousLeadingText = [self.previousLeadingText copy]; |
| copy.previousPlaceholderColor = self.previousPlaceholderColor; |
| copy.textInput = self.textInput; // Just a pointer value copy |
| copy.trailingUnderlineLabelFont = self.trailingUnderlineLabelFont; |
| copy.trailingUnderlineLabelTextColor = self.trailingUnderlineLabelTextColor; |
| |
| copy.activeColor = self.activeColor; |
| copy.disabledColor = self.disabledColor; |
| copy.normalColor = self.normalColor; |
| |
| return copy; |
| } |
| |
| - (void)dealloc { |
| [self unsubscribeFromNotifications]; |
| } |
| |
| - (void)commonMDCTextInputControllerFullWidthInitialization { |
| _characterCountViewMode = UITextFieldViewModeAlways; |
| _internalCharacterCounter = [[MDCTextInputAllCharactersCounter alloc] init]; |
| } |
| |
| - (void)setupInput { |
| if (!_textInput) { |
| return; |
| } |
| |
| // This controller will handle Dynamic Type and all fonts for the text input |
| _mdc_adjustsFontForContentSizeCategory = |
| _textInput.mdc_adjustsFontForContentSizeCategory || |
| [self class].mdc_adjustsFontForContentSizeCategoryDefault; |
| _textInput.mdc_adjustsFontForContentSizeCategory = NO; |
| _textInput.positioningDelegate = self; |
| |
| [self subscribeForNotifications]; |
| _textInput.underline.color = [UIColor clearColor]; |
| _textInput.clearButton.tintColor = self.textInputClearButtonTintColor; |
| [self updateLayout]; |
| } |
| |
| - (void)subscribeForNotifications { |
| if (!_textInput) { |
| return; |
| } |
| NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter]; |
| |
| if ([_textInput isKindOfClass:[UITextField class]]) { |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidBeginEditing:) |
| name:UITextFieldTextDidBeginEditingNotification |
| object:_textInput]; |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidChange:) |
| name:UITextFieldTextDidChangeNotification |
| object:_textInput]; |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidEndEditing:) |
| name:UITextFieldTextDidEndEditingNotification |
| object:_textInput]; |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidChange:) |
| name:MDCTextFieldTextDidSetTextNotification |
| object:_textInput]; |
| } |
| |
| if ([_textInput isKindOfClass:[MDCMultilineTextField class]]) { |
| MDCMultilineTextField *textField = (MDCMultilineTextField *)_textInput; |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidBeginEditing:) |
| name:UITextViewTextDidBeginEditingNotification |
| object:textField.textView]; |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidChange:) |
| name:UITextViewTextDidChangeNotification |
| object:textField.textView]; |
| [defaultCenter addObserver:self |
| selector:@selector(textInputDidEndEditing:) |
| name:UITextViewTextDidEndEditingNotification |
| object:textField.textView]; |
| } |
| } |
| |
| - (void)unsubscribeFromNotifications { |
| NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter]; |
| [defaultCenter removeObserver:self]; |
| } |
| |
| #pragma mark - Character Max Implementation |
| |
| - (NSUInteger)characterCount { |
| return [self.characterCounter characterCountForTextInput:self.textInput]; |
| } |
| |
| - (id<MDCTextInputCharacterCounter>)characterCounter { |
| if (!_characterCounter) { |
| _characterCounter = self.internalCharacterCounter; |
| } |
| return _characterCounter; |
| } |
| |
| - (void)setCharacterCounter:(id<MDCTextInputCharacterCounter>)characterCounter { |
| if (_characterCounter != characterCounter) { |
| _characterCounter = characterCounter; |
| [self updateLayout]; |
| } |
| } |
| |
| - (void)setCharacterCountMax:(NSUInteger)characterCountMax { |
| if (_characterCountMax != characterCountMax) { |
| _characterCountMax = characterCountMax; |
| [self updateLayout]; |
| } |
| } |
| |
| #pragma mark - TextInput Customization |
| |
| - (void)updateTextInput { |
| UIFont *font = self.textInputFont; |
| if (self.mdc_adjustsFontForContentSizeCategory) { |
| // TODO: (#4331) This needs to be converted to the new text scheme. |
| font = [font mdc_fontSizedForMaterialTextStyle:MDCFontTextStyleBody1 |
| scaledForDynamicType:_mdc_adjustsFontForContentSizeCategory]; |
| } |
| self.textInput.font = font; |
| } |
| |
| #pragma mark - Leading Label Customization |
| |
| - (void)updateLeadingUnderlineLabel { |
| self.textInput.leadingUnderlineLabel.text = nil; |
| self.textInput.leadingUnderlineLabel.textColor = self.leadingUnderlineLabelTextColor; |
| } |
| |
| #pragma mark - Placeholder Customization |
| |
| - (void)updatePlaceholder { |
| UIFont *placeHolderFont = self.inlinePlaceholderFont; |
| if (self.mdc_adjustsFontForContentSizeCategory) { |
| // TODO: (#4331) This needs to be converted to the new text scheme. |
| placeHolderFont = |
| [placeHolderFont mdc_fontSizedForMaterialTextStyle:MDCFontTextStyleBody1 |
| scaledForDynamicType:_mdc_adjustsFontForContentSizeCategory]; |
| } |
| |
| self.textInput.placeholderLabel.font = placeHolderFont; |
| self.textInput.placeholderLabel.textColor = self.inlinePlaceholderColor; |
| self.textInput.placeholderLabel.backgroundColor = self.backgroundColor; |
| } |
| |
| #pragma mark - Trailing Label Customization |
| |
| - (void)updateTrailingUnderlineLabel { |
| if (!self.characterCountMax) { |
| self.textInput.trailingUnderlineLabel.text = nil; |
| } else { |
| self.textInput.trailingUnderlineLabel.text = [self characterCountText]; |
| UIFont *font = self.trailingUnderlineLabelFont; |
| if (self.mdc_adjustsFontForContentSizeCategory) { |
| // TODO: (#4331) This needs to be converted to the new text scheme. |
| font = [font mdc_fontSizedForMaterialTextStyle:MDCFontTextStyleCaption |
| scaledForDynamicType:_mdc_adjustsFontForContentSizeCategory]; |
| } |
| self.textInput.trailingUnderlineLabel.font = font; |
| } |
| |
| UIColor *textColor = self.trailingUnderlineLabelTextColor; |
| |
| if (self.isDisplayingCharacterCountError || self.isDisplayingErrorText) { |
| textColor = self.errorColor; |
| } |
| |
| switch (self.characterCountViewMode) { |
| case UITextFieldViewModeAlways: |
| break; |
| case UITextFieldViewModeWhileEditing: |
| textColor = !self.textInput.isEditing ? [UIColor clearColor] : textColor; |
| break; |
| case UITextFieldViewModeUnlessEditing: |
| textColor = self.textInput.isEditing ? [UIColor clearColor] : textColor; |
| break; |
| case UITextFieldViewModeNever: |
| textColor = [UIColor clearColor]; |
| break; |
| } |
| |
| self.textInput.trailingUnderlineLabel.textColor = textColor; |
| self.textInput.trailingUnderlineLabel.backgroundColor = self.backgroundColor; |
| } |
| |
| - (NSString *)characterCountText { |
| // TODO: (larche) Localize |
| return [NSString stringWithFormat:@"%lu / %lu", (unsigned long)[self characterCount], |
| (unsigned long)self.characterCountMax]; |
| } |
| |
| #pragma mark - Underline Customization |
| |
| - (void)updateUnderline { |
| // Hide the underline. |
| self.textInput.underline.color = [UIColor clearColor]; |
| } |
| |
| #pragma mark - Underline Labels Fonts |
| |
| + (UIFont *)placeholderFont { |
| // TODO: (#4331) This needs to be converted to the new text scheme. |
| return [UIFont mdc_standardFontForMaterialTextStyle:MDCFontTextStyleBody1]; |
| } |
| |
| + (UIFont *)underlineLabelsFont { |
| // TODO: (#4331) This needs to be converted to the new text scheme. |
| return [UIFont mdc_standardFontForMaterialTextStyle:MDCFontTextStyleCaption]; |
| } |
| |
| #pragma mark - Properties Implementation |
| |
| // The underline is never shown in this style. |
| - (void)setActiveColor:(__unused UIColor *)activeColor { |
| [self updateUnderline]; |
| } |
| |
| - (UIColor *)activeColor { |
| return [UIColor clearColor]; |
| } |
| |
| + (UIColor *)activeColorDefault { |
| return [UIColor clearColor]; |
| } |
| |
| + (void)setActiveColorDefault:(__unused UIColor *)activeColorDefault { |
| // Not implemented. Underline is always clear. |
| } |
| |
| - (UIColor *)backgroundColor { |
| if (!_backgroundColor) { |
| _backgroundColor = [self class].backgroundColorDefault; |
| } |
| return _backgroundColor; |
| } |
| |
| - (void)setBackgroundColor:(UIColor *)backgroundColor { |
| if (_backgroundColor != backgroundColor) { |
| _backgroundColor = backgroundColor ?: [self class].backgroundColorDefault; |
| } |
| } |
| |
| + (UIColor *)backgroundColorDefault { |
| if (!_backgroundColorDefault) { |
| _backgroundColorDefault = [UIColor clearColor]; |
| } |
| return _backgroundColorDefault; |
| } |
| |
| + (void)setBackgroundColorDefault:(UIColor *)backgroundColorDefault { |
| _backgroundColorDefault = backgroundColorDefault ?: [UIColor clearColor]; |
| } |
| |
| - (void)setCharacterCountViewMode:(UITextFieldViewMode)characterCountViewMode { |
| if (_characterCountViewMode != characterCountViewMode) { |
| _characterCountViewMode = characterCountViewMode; |
| |
| [self updateLayout]; |
| } |
| } |
| |
| - (void)setDisabledColor:(__unused UIColor *)disabledColor { |
| [self updateUnderline]; |
| } |
| |
| - (UIColor *)disabledColor { |
| return [UIColor clearColor]; |
| } |
| |
| + (void)setDisabledColorDefault:(__unused UIColor *)disabledColorDefault { |
| // This controller does not have decorations that need to change for a disabled state. |
| } |
| |
| + (UIColor *)disabledColorDefault { |
| return [UIColor clearColor]; |
| } |
| |
| - (void)setErrorAccessibilityValue:(NSString *)errorAccessibilityValue { |
| _errorAccessibilityValue = [errorAccessibilityValue copy]; |
| } |
| |
| - (void)setHelperAccessibilityLabel:(NSString *)helperAccessibilityLabel { |
| _helperAccessibilityLabel = [helperAccessibilityLabel copy]; |
| if ([self.textInput.leadingUnderlineLabel.text isEqualToString:self.helperText]) { |
| self.textInput.leadingUnderlineLabel.accessibilityLabel = _helperAccessibilityLabel; |
| } |
| } |
| |
| - (UIColor *)errorColor { |
| if (!_errorColor) { |
| _errorColor = [self class].errorColorDefault; |
| } |
| return _errorColor; |
| } |
| |
| - (void)setErrorColor:(UIColor *)errorColor { |
| if (![_errorColor isEqual:errorColor]) { |
| _errorColor = errorColor ? errorColor : [self class].errorColorDefault; |
| if (self.isDisplayingCharacterCountError || self.isDisplayingErrorText) { |
| [self updateLeadingUnderlineLabel]; |
| [self updatePlaceholder]; |
| [self updateTrailingUnderlineLabel]; |
| [self updateUnderline]; |
| } |
| } |
| } |
| |
| + (UIColor *)errorColorDefault { |
| if (!_errorColorDefault) { |
| _errorColorDefault = MDCTextInputControllerFullWidthErrorColorDefault(); |
| } |
| return _errorColorDefault; |
| } |
| |
| + (void)setErrorColorDefault:(UIColor *)errorColorDefault { |
| _errorColorDefault = |
| errorColorDefault ? errorColorDefault : MDCTextInputControllerFullWidthErrorColorDefault(); |
| } |
| |
| - (void)setErrorText:(NSString *)errorText { |
| _errorText = [errorText copy]; |
| } |
| |
| - (void)setHelperText:(NSString *)helperText { |
| if (self.isDisplayingErrorText) { |
| self.previousLeadingText = helperText; |
| } else { |
| if (![self.textInput.leadingUnderlineLabel.text isEqualToString:helperText]) { |
| self.textInput.leadingUnderlineLabel.text = helperText; |
| [self updateLayout]; |
| } |
| } |
| } |
| |
| - (NSString *)helperText { |
| if (self.isDisplayingErrorText) { |
| return self.previousLeadingText; |
| } else { |
| return self.textInput.leadingUnderlineLabel.text; |
| } |
| } |
| |
| - (void)setInlinePlaceholderColor:(UIColor *)inlinePlaceholderColor { |
| if (![_inlinePlaceholderColor isEqual:inlinePlaceholderColor]) { |
| _inlinePlaceholderColor = inlinePlaceholderColor; |
| [self updatePlaceholder]; |
| } |
| } |
| |
| - (UIColor *)inlinePlaceholderColor { |
| return _inlinePlaceholderColor ? _inlinePlaceholderColor |
| : [self class].inlinePlaceholderColorDefault; |
| } |
| |
| + (UIColor *)inlinePlaceholderColorDefault { |
| if (!_inlinePlaceholderColorDefault) { |
| _inlinePlaceholderColorDefault = |
| MDCTextInputControllerFullWidthInlinePlaceholderTextColorDefault(); |
| } |
| return _inlinePlaceholderColorDefault; |
| } |
| |
| + (void)setInlinePlaceholderColorDefault:(UIColor *)inlinePlaceholderColorDefault { |
| _inlinePlaceholderColorDefault = |
| inlinePlaceholderColorDefault |
| ? inlinePlaceholderColorDefault |
| : MDCTextInputControllerFullWidthInlinePlaceholderTextColorDefault(); |
| } |
| |
| - (UIFont *)inlinePlaceholderFont { |
| return _inlinePlaceholderFont ?: [self class].inlinePlaceholderFontDefault; |
| } |
| |
| - (void)setInlinePlaceholderFont:(UIFont *)inlinePlaceholderFont { |
| if (![_inlinePlaceholderFont isEqual:inlinePlaceholderFont]) { |
| _inlinePlaceholderFont = inlinePlaceholderFont; |
| [self updateLayout]; |
| } |
| } |
| |
| + (UIFont *)inlinePlaceholderFontDefault { |
| return _inlinePlaceholderFontDefault ?: [[self class] placeholderFont]; |
| } |
| |
| + (void)setInlinePlaceholderFontDefault:(UIFont *)inlinePlaceholderFontDefault { |
| _inlinePlaceholderFontDefault = inlinePlaceholderFontDefault; |
| } |
| |
| - (BOOL)isDisplayingCharacterCountError { |
| return self.characterCountMax && [self characterCount] > self.characterCountMax; |
| } |
| |
| - (BOOL)isDisplayingErrorText { |
| return self.errorText != nil; |
| } |
| |
| - (UIFont *)leadingUnderlineLabelFont { |
| // Not implemented. The leading underline label is never seen. |
| return [[self class] leadingUnderlineLabelFontDefault]; |
| } |
| |
| - (void)setLeadingUnderlineLabelFont:(__unused UIColor *)leadingUnderlineLabelFont { |
| // Not implemented. The leading underline label is never seen. |
| } |
| |
| + (UIFont *)leadingUnderlineLabelFontDefault { |
| // Implemented only for protocol conformance. The leading underline label is never seen. |
| return [[self class] underlineLabelsFont]; |
| } |
| |
| + (void)setLeadingUnderlineLabelFontDefault:(__unused UIFont *)leadingUnderlineLabelFontDefault { |
| // Not implemented. The leading underline label is never seen. |
| } |
| |
| // The leading underline label must always be clear to not obstruct the placeholder and input. |
| - (UIColor *)leadingUnderlineLabelTextColor { |
| return [UIColor clearColor]; |
| } |
| |
| - (void)setLeadingUnderlineLabelTextColor:(__unused UIColor *)leadingUnderlineLabelTextColor { |
| // Not implemented. Leading underline label is always clear. |
| } |
| |
| + (UIColor *)leadingUnderlineLabelTextColorDefault { |
| return [UIColor clearColor]; |
| } |
| |
| + (void)setLeadingUnderlineLabelTextColorDefault: |
| (__unused UIColor *)leadingUnderlineLabelTextColorDefault { |
| // Not implemented. Leading underline label is always clear. |
| } |
| |
| // The underline is never shown in this style. |
| - (void)setNormalColor:(__unused UIColor *)normalColor { |
| [self updateUnderline]; |
| } |
| |
| - (UIColor *)normalColor { |
| return [UIColor clearColor]; |
| } |
| |
| + (void)setNormalColorDefault:(__unused UIColor *)normalColorDefault { |
| // Not implemented. Underline is always clear. |
| } |
| |
| + (UIColor *)normalColorDefault { |
| return [UIColor clearColor]; |
| } |
| |
| - (NSString *)placeholderText { |
| return _textInput.placeholder; |
| } |
| |
| - (void)setPlaceholderText:(NSString *)placeholderText { |
| if ([_textInput.placeholder isEqualToString:placeholderText]) { |
| return; |
| } |
| _textInput.placeholder = [placeholderText copy]; |
| } |
| |
| - (void)setPreviousLeadingText:(NSString *)previousLeadingText { |
| _previousLeadingText = [previousLeadingText copy]; |
| } |
| |
| - (void)setPreviousPlaceholderColor:(UIColor *)previousPlaceholderColor { |
| _previousPlaceholderColor = previousPlaceholderColor; |
| } |
| |
| - (UIRectCorner)roundedCorners { |
| return 0; |
| } |
| |
| - (void)setRoundedCorners:(__unused UIRectCorner)roundedCorners { |
| // Not implemented. There are no corners to round. |
| } |
| |
| + (UIRectCorner)roundedCornersDefault { |
| return 0; |
| } |
| |
| + (void)setRoundedCornersDefault:(__unused UIRectCorner)roundedCornersDefault { |
| // Not implemented. There are no corners to round. |
| } |
| |
| - (void)setTextInput:(UIView<MDCTextInput> *)textInput { |
| if (_textInput != textInput) { |
| [self unsubscribeFromNotifications]; |
| |
| _textInput = textInput; |
| [self setupInput]; |
| } |
| } |
| |
| - (UIFont *)textInputFont { |
| if (_textInputFont) { |
| return _textInputFont; |
| } |
| return [self class].textInputFontDefault ?: self.textInput.font; |
| } |
| |
| - (void)setTextInputFont:(UIFont *)textInputFont { |
| if (![_textInputFont isEqual:textInputFont]) { |
| _textInputFont = textInputFont; |
| [self updateLayout]; |
| } |
| } |
| |
| + (UIFont *)textInputFontDefault { |
| return _textInputFontDefault; |
| } |
| |
| + (void)setTextInputFontDefault:(UIFont *)textInputFontDefault { |
| _textInputFontDefault = textInputFontDefault; |
| } |
| |
| - (UIColor *)textInputClearButtonTintColor { |
| if (_textInputClearButtonTintColor) { |
| return _textInputClearButtonTintColor; |
| } |
| return [self class].textInputClearButtonTintColorDefault ?: self.textInput.clearButton.tintColor; |
| } |
| |
| - (void)setTextInputClearButtonTintColor:(UIColor *)textInputClearButtonTintColor { |
| _textInputClearButtonTintColor = textInputClearButtonTintColor; |
| _textInput.clearButton.tintColor = _textInputClearButtonTintColor; |
| } |
| |
| + (UIColor *)textInputClearButtonTintColorDefault { |
| return _textInputClearButtonTintColorDefault; |
| } |
| |
| + (void)setTextInputClearButtonTintColorDefault:(UIColor *)textInputClearButtonTintColorDefault { |
| _textInputClearButtonTintColorDefault = textInputClearButtonTintColorDefault; |
| } |
| |
| - (UIFont *)trailingUnderlineLabelFont { |
| return _trailingUnderlineLabelFont ?: [self class].trailingUnderlineLabelFontDefault; |
| } |
| |
| - (void)setTrailingUnderlineLabelFont:(UIFont *)trailingUnderlineLabelFont { |
| if (![_trailingUnderlineLabelFont isEqual:trailingUnderlineLabelFont]) { |
| _trailingUnderlineLabelFont = trailingUnderlineLabelFont; |
| [self updateLayout]; |
| } |
| } |
| |
| + (UIFont *)trailingUnderlineLabelFontDefault { |
| return _trailingUnderlineLabelFontDefault ?: [[self class] underlineLabelsFont]; |
| } |
| |
| + (void)setTrailingUnderlineLabelFontDefault:(UIFont *)trailingUnderlineLabelFontDefault { |
| _trailingUnderlineLabelFontDefault = trailingUnderlineLabelFontDefault; |
| } |
| |
| - (UIColor *)trailingUnderlineLabelTextColor { |
| return _trailingUnderlineLabelTextColor ? _trailingUnderlineLabelTextColor |
| : [self class].trailingUnderlineLabelTextColorDefault; |
| } |
| |
| - (void)setTrailingUnderlineLabelTextColor:(UIColor *)trailingUnderlineLabelTextColor { |
| if (_trailingUnderlineLabelTextColor != trailingUnderlineLabelTextColor) { |
| _trailingUnderlineLabelTextColor = trailingUnderlineLabelTextColor |
| ? trailingUnderlineLabelTextColor |
| : [self class].trailingUnderlineLabelTextColorDefault; |
| |
| [self updateTrailingUnderlineLabel]; |
| } |
| } |
| |
| + (UIColor *)trailingUnderlineLabelTextColorDefault { |
| if (!_trailingUnderlineLabelTextColorDefault) { |
| _trailingUnderlineLabelTextColorDefault = |
| MDCTextInputControllerFullWidthInlinePlaceholderTextColorDefault(); |
| } |
| return _trailingUnderlineLabelTextColorDefault; |
| } |
| |
| + (void)setTrailingUnderlineLabelTextColorDefault: |
| (UIColor *)trailingUnderlineLabelTextColorDefault { |
| _trailingUnderlineLabelTextColorDefault = |
| trailingUnderlineLabelTextColorDefault |
| ? trailingUnderlineLabelTextColorDefault |
| : MDCTextInputControllerFullWidthInlinePlaceholderTextColorDefault(); |
| } |
| |
| - (CGFloat)underlineHeightActive { |
| return 0; |
| } |
| |
| - (void)setUnderlineHeightActive:(__unused CGFloat)underlineHeightActive { |
| // Not implemented. Underline is never shown. |
| } |
| |
| + (CGFloat)underlineHeightActiveDefault { |
| return 0; |
| } |
| |
| + (void)setUnderlineHeightActiveDefault:(__unused CGFloat)underlineHeightActiveDefault { |
| // Not implemented. Underline is never shown. |
| } |
| |
| - (CGFloat)underlineHeightNormal { |
| return 0; |
| } |
| |
| - (void)setUnderlineHeightNormal:(__unused CGFloat)underlineHeightNormal { |
| // Not implemented. Underline is never shown. |
| } |
| |
| + (CGFloat)underlineHeightNormalDefault { |
| return 0; |
| } |
| |
| + (void)setUnderlineHeightNormalDefault:(__unused CGFloat)underlineHeightNormalDefault { |
| // Not implemented. Underline is never shown. |
| } |
| |
| - (UITextFieldViewMode)underlineViewMode { |
| return UITextFieldViewModeNever; |
| } |
| |
| - (void)setUnderlineViewMode:(__unused UITextFieldViewMode)underlineViewMode { |
| [self updateLayout]; |
| } |
| |
| + (UITextFieldViewMode)underlineViewModeDefault { |
| return UITextFieldViewModeNever; |
| } |
| |
| + (void)setUnderlineViewModeDefault:(__unused UITextFieldViewMode)underlineViewModeDefault { |
| // Not implemented. Underline is never shown. |
| } |
| |
| #pragma mark - Layout |
| |
| - (void)updateLayout { |
| if (!_textInput) { |
| return; |
| } |
| |
| [self updatePlaceholder]; |
| [self updateLeadingUnderlineLabel]; |
| [self updateTrailingUnderlineLabel]; |
| [self updateTextInput]; |
| [self updateUnderline]; |
| [self updateConstraints]; |
| } |
| |
| - (void)updateConstraints { |
| if (!self.characterCountTrailing) { |
| self.characterCountTrailing = [NSLayoutConstraint |
| constraintWithItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeTrailing |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeTrailing |
| multiplier:1 |
| constant:-1 * MDCTextInputControllerFullWidthHorizontalPadding]; |
| } |
| if (!self.clearButtonTrailingCharacterCountLeading) { |
| self.clearButtonTrailingCharacterCountLeading = |
| [NSLayoutConstraint constraintWithItem:self.textInput.clearButton |
| attribute:NSLayoutAttributeTrailing |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeLeading |
| multiplier:1 |
| constant:0]; |
| } |
| if (!self.placeholderLeading) { |
| self.placeholderLeading = |
| [NSLayoutConstraint constraintWithItem:self.textInput.placeholderLabel |
| attribute:NSLayoutAttributeLeading |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeLeading |
| multiplier:1 |
| constant:MDCTextInputControllerFullWidthHorizontalPadding]; |
| } |
| if (!self.placeholderTrailingCharacterCountLeading) { |
| self.placeholderTrailingCharacterCountLeading = [NSLayoutConstraint |
| constraintWithItem:self.textInput.placeholderLabel |
| attribute:NSLayoutAttributeTrailing |
| relatedBy:NSLayoutRelationLessThanOrEqual |
| toItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeLeading |
| multiplier:1 |
| constant:-1 * MDCTextInputControllerFullWidthHorizontalInnerPadding]; |
| } |
| if (!self.placeholderTrailingSuperviewTrailing) { |
| self.placeholderTrailingSuperviewTrailing = [NSLayoutConstraint |
| constraintWithItem:self.textInput.placeholderLabel |
| attribute:NSLayoutAttributeTrailing |
| relatedBy:NSLayoutRelationLessThanOrEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeTrailing |
| multiplier:1 |
| constant:-1 * MDCTextInputControllerFullWidthHorizontalPadding]; |
| } |
| |
| // Multi-line Only |
| if ([self.textInput isKindOfClass:[MDCMultilineTextField class]]) { |
| [self.textInput.leadingUnderlineLabel setContentHuggingPriority:UILayoutPriorityRequired |
| forAxis:UILayoutConstraintAxisVertical]; |
| [self.textInput.leadingUnderlineLabel |
| setContentCompressionResistancePriority:UILayoutPriorityRequired |
| forAxis:UILayoutConstraintAxisVertical]; |
| |
| [self.textInput.trailingUnderlineLabel |
| setContentCompressionResistancePriority:UILayoutPriorityRequired |
| forAxis:UILayoutConstraintAxisVertical]; |
| if (!self.characterCountY) { |
| self.characterCountY = |
| [NSLayoutConstraint constraintWithItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeBottom |
| relatedBy:NSLayoutRelationEqual |
| toItem:((MDCMultilineTextField *)self.textInput).textView |
| attribute:NSLayoutAttributeBottom |
| multiplier:1 |
| constant:0]; |
| } |
| if (!self.clearButtonY) { |
| self.clearButtonY = |
| [NSLayoutConstraint constraintWithItem:self.textInput.clearButton |
| attribute:NSLayoutAttributeCenterY |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeCenterY |
| multiplier:1 |
| constant:0]; |
| } |
| |
| if (!self.multilineTextViewBottom) { |
| self.multilineTextViewBottom = [NSLayoutConstraint |
| constraintWithItem:((MDCMultilineTextField *)self.textInput).textView |
| attribute:NSLayoutAttributeBottom |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeBottom |
| multiplier:1 |
| constant:-1 * MDCTextInputControllerFullWidthVerticalPadding]; |
| } |
| if (!self.multilineTextViewTop) { |
| self.multilineTextViewTop = |
| [NSLayoutConstraint constraintWithItem:((MDCMultilineTextField *)self.textInput).textView |
| attribute:NSLayoutAttributeTop |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeTop |
| multiplier:1 |
| constant:MDCTextInputControllerFullWidthVerticalPadding]; |
| } |
| |
| if (!self.multilinePlaceholderCenterY) { |
| self.multilinePlaceholderCenterY = |
| [NSLayoutConstraint constraintWithItem:self.textInput.placeholderLabel |
| attribute:NSLayoutAttributeCenterY |
| relatedBy:NSLayoutRelationEqual |
| toItem:((MDCMultilineTextField *)self.textInput).textView |
| attribute:NSLayoutAttributeCenterY |
| multiplier:1 |
| constant:0]; |
| } |
| |
| CGFloat scale = UIScreen.mainScreen.scale; |
| CGFloat characterCountHeightConstant = |
| ceil(((MDCMultilineTextField *)self.textInput).textView.font.lineHeight * scale) / scale; |
| if (!self.multilineCharacterCountHeight) { |
| self.multilineCharacterCountHeight = |
| [NSLayoutConstraint constraintWithItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeHeight |
| relatedBy:NSLayoutRelationEqual |
| toItem:nil |
| attribute:NSLayoutAttributeNotAnAttribute |
| multiplier:1 |
| constant:characterCountHeightConstant]; |
| } |
| self.multilineCharacterCountHeight.constant = characterCountHeightConstant; |
| |
| [NSLayoutConstraint activateConstraints:@[ |
| self.multilineTextViewBottom, self.multilineTextViewTop, self.multilinePlaceholderCenterY, |
| self.multilineCharacterCountHeight |
| ]]; |
| |
| // A height constraint is not necessary for multiline. Its height is calculated in |
| // intrinsicContentSize: |
| } else { |
| // Single-line Only |
| // .fullWidth |
| if (!self.characterCountY) { |
| self.characterCountY = |
| [NSLayoutConstraint constraintWithItem:self.textInput.trailingUnderlineLabel |
| attribute:NSLayoutAttributeCenterY |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeCenterY |
| multiplier:1 |
| constant:0]; |
| } |
| if (!self.clearButtonY) { |
| self.clearButtonY = [NSLayoutConstraint constraintWithItem:self.textInput.clearButton |
| attribute:NSLayoutAttributeCenterY |
| relatedBy:NSLayoutRelationEqual |
| toItem:self.textInput |
| attribute:NSLayoutAttributeCenterY |
| multiplier:1 |
| constant:0]; |
| } |
| } |
| [NSLayoutConstraint activateConstraints:@[ |
| self.characterCountY, self.characterCountTrailing, |
| self.clearButtonTrailingCharacterCountLeading, self.clearButtonY, self.placeholderLeading, |
| self.placeholderTrailingCharacterCountLeading, self.placeholderTrailingSuperviewTrailing |
| ]]; |
| |
| [self.textInput.trailingUnderlineLabel setContentHuggingPriority:UILayoutPriorityRequired |
| forAxis:UILayoutConstraintAxisVertical]; |
| } |
| |
| #pragma mark - MDCTextFieldPositioningDelegate |
| |
| // clang-format off |
| /** |
| textInsets: is the source of truth for vertical layout. It's used to figure out the proper |
| height and also where to place the placeholder / text field. |
| |
| NOTE: It's applied before the textRect is flipped for RTL. So all calculations are done here à la |
| LTR. |
| |
| The vertical layout is, simply: |
| MDCTextInputControllerFullWidthVerticalPadding // Top padding |
| rint(MAX(self.textInput.font.lineHeight, // Text field or placeholder |
| self.textInput.placeholderLabel.font.lineHeight)) |
| MDCTextInputControllerFullWidthVerticalPadding // Bottom padding |
| */ |
| // clang-format on |
| - (UIEdgeInsets)textInsets:(__unused UIEdgeInsets)defaultInsets |
| withSizeThatFitsWidthHint:(CGFloat)widthHint { |
| // NOTE: UITextFields have a centerY based layout. But you can change EITHER the height or the Y. |
| // Not both. Don't know why. So, we have to leave the text rect as big as the bounds and move it |
| // to a Y that works. In other words, no bottom inset will make a difference here for UITextFields |
| UIEdgeInsets textInsets = UIEdgeInsetsZero; |
| |
| textInsets.top = MDCTextInputControllerFullWidthVerticalPadding; |
| textInsets.bottom = MDCTextInputControllerFullWidthVerticalPadding; |
| textInsets.left = MDCTextInputControllerFullWidthHorizontalPadding; |
| textInsets.right = MDCTextInputControllerFullWidthHorizontalPadding; |
| |
| // The trailing label gets in the way. If it has a frame, it's used. But if not, an |
| // estimate is made of the size the text will be. |
| if (CGRectGetWidth(self.textInput.trailingUnderlineLabel.frame) > 1) { |
| textInsets.right += ceil(CGRectGetWidth(self.textInput.trailingUnderlineLabel.frame)); |
| } else if (self.characterCountMax) { |
| CGRect charCountRect = [[self characterCountText] |
| boundingRectWithSize:self.textInput.bounds.size |
| options:NSStringDrawingUsesLineFragmentOrigin |
| attributes:@{NSFontAttributeName : self.textInput.trailingUnderlineLabel.font} |
| context:nil]; |
| textInsets.right += ceil(CGRectGetWidth(charCountRect)); |
| } |
| |
| return textInsets; |
| } |
| |
| - (CGRect)editingRectForBounds:(__unused CGRect)bounds defaultRect:(CGRect)defaultRect { |
| if (![self.textInput isKindOfClass:[UITextField class]]) { |
| return CGRectZero; |
| } |
| |
| MDCTextField *textField = (MDCTextField *)self.textInput; |
| CGRect editingRect = defaultRect; |
| |
| // Full width text fields have their clear button in the horizontal margin, but because the |
| // internal implementation of textRect calls [super clearButtonRectForBounds:] in its |
| // implementation, our modifications are not picked up. Adjust accordingly. |
| // Full width text fields also have their character count on the text input line. |
| if (self.textInput.text.length > 0) { |
| switch (textField.clearButtonMode) { |
| case UITextFieldViewModeWhileEditing: |
| editingRect.size.width -= CGRectGetWidth(self.textInput.clearButton.bounds); |
| case UITextFieldViewModeUnlessEditing: |
| // The 'defaultRect' is based on the textInsets so we need to compensate for |
| // the button NOT being there. |
| editingRect.size.width += CGRectGetWidth(self.textInput.clearButton.bounds); |
| editingRect.size.width -= MDCTextInputControllerFullWidthHorizontalInnerPadding; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| return editingRect; |
| } |
| |
| - (UIEdgeInsets)textInsets:(UIEdgeInsets)defaultInsets { |
| return [self textInsets:defaultInsets withSizeThatFitsWidthHint:0]; |
| } |
| |
| #pragma mark - UITextField & UITextView Notification Observation |
| |
| - (void)textInputDidBeginEditing:(__unused NSNotification *)note { |
| [self updateLayout]; |
| |
| if (self.characterCountMax > 0) { |
| NSString *announcementString; |
| if (!announcementString.length) { |
| announcementString = [NSString |
| stringWithFormat:@"%lu character limit.", (unsigned long)self.characterCountMax]; |
| } |
| |
| // Simply sending a layout change notification does not seem to |
| UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, announcementString); |
| } |
| } |
| |
| - (void)textInputDidChange:(__unused NSNotification *)note { |
| [self updateLayout]; |
| |
| // Accessibility |
| if (self.textInput.isEditing && self.characterCountMax > 0) { |
| NSString *announcementString; |
| if (!announcementString.length) { |
| announcementString = |
| [NSString stringWithFormat:@"%lu of %lu characters", |
| (unsigned long)[self.characterCounter |
| characterCountForTextInput:self.textInput], |
| (unsigned long)self.characterCountMax]; |
| } |
| |
| // Simply sending a layout change notification does not seem to |
| UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, announcementString); |
| } |
| } |
| |
| - (void)textInputDidEndEditing:(__unused NSNotification *)note { |
| [self updateLayout]; |
| } |
| |
| #pragma mark - Public API |
| |
| - (void)setErrorText:(NSString *)errorText |
| errorAccessibilityValue:(NSString *)errorAccessibilityValue { |
| // Turn on error: |
| // |
| // Here the 'magic' logic happens for error text. |
| // When the user sets error text, we save the current state of their underline, leading text, |
| // trailing text, and placeholder text for both content and color. |
| if (errorText && !self.isDisplayingErrorText) { |
| // If we are not in error, but will be, we need to save the existing state. |
| self.previousLeadingText = self.textInput.leadingUnderlineLabel.text |
| ? self.textInput.leadingUnderlineLabel.text.copy |
| : @""; |
| |
| self.textInput.leadingUnderlineLabel.text = errorText; |
| |
| [self updatePlaceholder]; |
| } |
| |
| // Change error: |
| if (errorText && self.isDisplayingErrorText) { |
| self.textInput.leadingUnderlineLabel.text = errorText; |
| } |
| |
| // Turn off error: |
| // |
| // If error text is unset (nil) we reset to previous values. |
| if (!errorText) { |
| // If there is a saved state, use it. |
| if (self.previousLeadingText) { |
| self.textInput.leadingUnderlineLabel.text = self.previousLeadingText; |
| } |
| |
| // Clear out saved state. |
| self.previousLeadingText = nil; |
| } |
| |
| self.errorText = errorText; |
| self.errorAccessibilityValue = errorAccessibilityValue; |
| |
| [self updateLayout]; |
| |
| // Accessibility |
| // TODO: (larche) Localize |
| if (errorText) { |
| NSString *announcementString = errorAccessibilityValue; |
| if (!announcementString.length) { |
| announcementString = |
| errorText.length > 0 ? [NSString stringWithFormat:@"Error: %@", errorText] : @"Error."; |
| } |
| |
| // Simply sending a layout change notification does not seem to |
| UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, announcementString); |
| |
| NSString *valueString = @""; |
| |
| if (self.textInput.text.length > 0) { |
| valueString = [self.textInput.text copy]; |
| } |
| if (self.textInput.placeholder.length > 0) { |
| valueString = [NSString stringWithFormat:@"%@. %@", valueString, self.textInput.placeholder]; |
| } |
| valueString = [valueString stringByAppendingString:@"."]; |
| |
| self.textInput.accessibilityValue = valueString; |
| NSString *leadingUnderlineLabelText = self.textInput.leadingUnderlineLabel.text; |
| self.textInput.leadingUnderlineLabel.accessibilityLabel = |
| [NSString stringWithFormat:@"Error: %@.", |
| leadingUnderlineLabelText ? leadingUnderlineLabelText : @""]; |
| } else { |
| self.textInput.accessibilityValue = nil; |
| if ([self.textInput.leadingUnderlineLabel.text isEqualToString:self.helperText]) { |
| self.textInput.leadingUnderlineLabel.accessibilityLabel = self.helperAccessibilityLabel; |
| } else { |
| self.textInput.leadingUnderlineLabel.accessibilityLabel = nil; |
| } |
| } |
| } |
| |
| - (void)setHelperText:(NSString *)helperText |
| helperAccessibilityLabel:(NSString *)helperAccessibilityLabel { |
| self.helperText = helperText; |
| self.helperAccessibilityLabel = helperAccessibilityLabel; |
| } |
| |
| #pragma mark - Accessibility |
| |
| - (BOOL)mdc_adjustsFontForContentSizeCategory { |
| return _mdc_adjustsFontForContentSizeCategory; |
| } |
| |
| - (void)mdc_setAdjustsFontForContentSizeCategory:(BOOL)adjusts { |
| _mdc_adjustsFontForContentSizeCategory = adjusts; |
| |
| [self updateLayout]; |
| |
| if (_mdc_adjustsFontForContentSizeCategory) { |
| [[NSNotificationCenter defaultCenter] addObserver:self |
| selector:@selector(contentSizeCategoryDidChange:) |
| name:UIContentSizeCategoryDidChangeNotification |
| object:nil]; |
| } else { |
| [[NSNotificationCenter defaultCenter] removeObserver:self |
| name:UIContentSizeCategoryDidChangeNotification |
| object:nil]; |
| } |
| } |
| |
| + (BOOL)mdc_adjustsFontForContentSizeCategoryDefault { |
| return _mdc_adjustsFontForContentSizeCategoryDefault; |
| } |
| |
| + (void)setMdc_adjustsFontForContentSizeCategoryDefault: |
| (BOOL)mdc_adjustsFontForContentSizeCategoryDefault { |
| _mdc_adjustsFontForContentSizeCategoryDefault = mdc_adjustsFontForContentSizeCategoryDefault; |
| } |
| |
| - (void)contentSizeCategoryDidChange:(__unused NSNotification *)notification { |
| [self updateLayout]; |
| } |
| |
| @end |
