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73 lines
1.9 KiB
Objective-C
73 lines
1.9 KiB
Objective-C
//
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// UIAssistantTextField.m
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// linphone
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//
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// Created by Gautier Pelloux-Prayer on 30/09/15.
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//
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//
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#import "UIAssistantTextField.h"
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@implementation UIAssistantTextField
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- (void)showError:(NSString *)msg {
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if (!_errorLabel) {
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[self showError:msg when:nil];
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}
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_errorLabel.text = msg;
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_errorLabel.hidden = NO;
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self.layer.borderColor = _errorLabel.hidden ? [[UIColor clearColor] CGColor] : [[UIColor redColor] CGColor];
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}
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- (void)showError:(NSString *)msg when:(UIDisplayError)apred {
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_showErrorPredicate = apred;
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self.layer.borderWidth = .8;
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self.layer.cornerRadius = 4.f;
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self.autoresizingMask = YES;
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if (!_errorLabel) {
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_errorLabel = [[UILabel alloc] initWithFrame:self.frame];
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_errorLabel.font = [UIFont systemFontOfSize:11];
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_errorLabel.textColor = [UIColor redColor];
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}
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_errorLabel.text = msg;
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CGSize maximumLabelSize = CGSizeMake(self.frame.size.width, 9999);
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CGSize expectedLabelSize =
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[msg sizeWithFont:_errorLabel.font constrainedToSize:maximumLabelSize lineBreakMode:_errorLabel.lineBreakMode];
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CGRect newFrame = _errorLabel.frame;
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newFrame.size.height = expectedLabelSize.height;
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newFrame.origin.y = self.frame.origin.y + self.frame.size.height;
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_errorLabel.frame = newFrame;
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_lastText = self.text;
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[self checkDisplayError];
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[self.superview addSubview:_errorLabel];
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}
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- (void)checkDisplayError {
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_errorLabel.hidden = ![self isInvalid];
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self.layer.borderColor = _errorLabel.hidden ? [[UIColor clearColor] CGColor] : [[UIColor redColor] CGColor];
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}
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- (BOOL)textField:(UITextField *)textField
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shouldChangeCharactersInRange:(NSRange)range
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replacementString:(NSString *)string {
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_lastText = [textField.text stringByReplacingCharactersInRange:range withString:string];
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[self checkDisplayError];
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return YES;
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}
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- (void)textFieldDidEndEditing:(UITextField *)textField {
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_canShowError = YES;
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[self checkDisplayError];
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}
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- (BOOL)isInvalid {
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return _canShowError && _showErrorPredicate && _showErrorPredicate(_lastText);
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}
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@end
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