-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Replace class for textView with placeholder
- Loading branch information
Showing
7 changed files
with
185 additions
and
144 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| // | ||
| // PlaceholderTextView.h | ||
| // Louis | ||
| // | ||
| // Created by Thibault Le Cornec on 27/06/16. | ||
| // Copyright © 2016 Louis. All rights reserved. | ||
| // | ||
|
|
||
| #import <UIKit/UIKit.h> | ||
|
|
||
| @interface PlaceholderTextView : UITextView | ||
|
|
||
| @property(nonatomic, retain) NSString *placeholder; | ||
| @property(nonatomic, retain) UIColor *placeholderColor; | ||
|
|
||
| @end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| // | ||
| // PlaceholderTextView.m | ||
| // Louis | ||
| // | ||
| // Created by Thibault Le Cornec on 27/06/16. | ||
| // Copyright © 2016 Louis. All rights reserved. | ||
| // | ||
|
|
||
| #import "PlaceholderTextView.h" | ||
|
|
||
| @interface PlaceholderTextView () | ||
| @property(nonatomic, retain) UILabel *labelPlaceholder; | ||
| @end | ||
|
|
||
|
|
||
|
|
||
| @implementation PlaceholderTextView | ||
|
|
||
| static char kvoContextIsConnected; | ||
| static NSArray *observingKeys; | ||
|
|
||
| + (void)initialize | ||
| { | ||
| [super initialize]; | ||
| if (self == PlaceholderTextView.class) { | ||
| observingKeys = @[@"attributedText", | ||
| @"bounds", | ||
| @"font", | ||
| @"frame", | ||
| @"text", | ||
| @"textAlignment", | ||
| @"textContainerInset"]; | ||
| } | ||
| } | ||
|
|
||
| /* ************************ | ||
| MARK: - Object Lifecycle | ||
| ************************ */ | ||
|
|
||
| - (void)commonInit | ||
| { | ||
| _labelPlaceholder = [UILabel new]; | ||
| _labelPlaceholder.userInteractionEnabled = NO; | ||
| _labelPlaceholder.lineBreakMode = NSLineBreakByWordWrapping; | ||
| _labelPlaceholder.numberOfLines = 0; | ||
| _labelPlaceholder.backgroundColor = UIColor.clearColor; | ||
| _labelPlaceholder.textColor = [self.class defaultPlaceholderColor]; | ||
| [self insertSubview:_labelPlaceholder atIndex:0]; | ||
| self.scrollEnabled = YES; | ||
|
|
||
| /* Notif & KVO */ | ||
| [[NSNotificationCenter defaultCenter] addObserver:self | ||
| selector:@selector(updatePlaceholderLabel:) | ||
| name:UITextViewTextDidChangeNotification | ||
| object:self]; | ||
|
|
||
| for (NSString *key in observingKeys) { | ||
| [self addObserver:self forKeyPath:key options:NSKeyValueObservingOptionNew context:&kvoContextIsConnected]; | ||
| } | ||
| } | ||
|
|
||
| - (id)initWithCoder:(NSCoder *)aDecoder | ||
| { | ||
| if ((self = [super initWithCoder:aDecoder]) != nil) { | ||
| [self commonInit]; | ||
| } | ||
| return self; | ||
| } | ||
|
|
||
| - (id)initWithFrame:(CGRect)frame | ||
| { | ||
| if ((self = [super initWithFrame:frame]) != nil) { | ||
| [self commonInit]; | ||
| } | ||
| return self; | ||
| } | ||
|
|
||
| - (void)dealloc | ||
| { | ||
| [NSNotificationCenter.defaultCenter removeObserver:self name:UITextViewTextDidChangeNotification object:self]; | ||
|
|
||
| if (_labelPlaceholder) { | ||
| for (NSString *key in observingKeys) { | ||
| [self removeObserver:self forKeyPath:key context:&kvoContextIsConnected]; | ||
| } | ||
| } | ||
| } | ||
|
|
||
|
|
||
| /* ***************** | ||
| MARK: - Accessors | ||
| ***************** */ | ||
|
|
||
| - (NSString *)placeholder | ||
| { | ||
| return self.labelPlaceholder.text; | ||
| } | ||
|
|
||
| - (void)setPlaceholder:(NSString *)placeholderString | ||
| { | ||
| self.labelPlaceholder.text = placeholderString; | ||
| [self updatePlaceholderLabel:nil]; | ||
| } | ||
|
|
||
| - (UIColor *)placeholderColor | ||
| { | ||
| return self.labelPlaceholder.textColor; | ||
| } | ||
|
|
||
| - (void)setPlaceholderColor:(UIColor *)placeholderColor | ||
| { | ||
| self.labelPlaceholder.textColor = placeholderColor; | ||
| } | ||
|
|
||
|
|
||
| /* ************************* | ||
| MARK: - KVO Notifications | ||
| ************************* */ | ||
|
|
||
| - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context | ||
| { | ||
| #pragma unused(keyPath, object, change, context) | ||
| if (context == &kvoContextIsConnected) { | ||
| [self updatePlaceholderLabel:nil]; | ||
| } else { | ||
| [super observeValueForKeyPath:keyPath ofObject:object change:change context:context]; | ||
| } | ||
| } | ||
|
|
||
| - (void)updatePlaceholderLabel:(NSNotification *)notif | ||
| { | ||
| #pragma unused(notif) | ||
| self.labelPlaceholder.hidden = (self.text.length > 0); | ||
|
|
||
| self.labelPlaceholder.font = self.font; | ||
| self.labelPlaceholder.textAlignment = self.textAlignment; | ||
|
|
||
| CGFloat lineFragmentPadding; | ||
| UIEdgeInsets textContainerInset; | ||
| lineFragmentPadding = self.textContainer.lineFragmentPadding; | ||
| textContainerInset = self.textContainerInset; | ||
|
|
||
| CGFloat x = lineFragmentPadding + textContainerInset.left; | ||
| CGFloat y = textContainerInset.top; | ||
| CGFloat width = CGRectGetWidth(self.bounds) - x - lineFragmentPadding - textContainerInset.right; | ||
| CGFloat height = [self.labelPlaceholder sizeThatFits:CGSizeMake(width, 0)].height; | ||
| self.labelPlaceholder.frame = CGRectMake(x, y, width, height); | ||
| } | ||
|
|
||
| /* *************** | ||
| MARK: - Private | ||
| *************** */ | ||
|
|
||
| + (UIColor *)defaultPlaceholderColor | ||
| { | ||
| return [UIColor colorWithRed:0 green:0 blue:25.0/255.0 alpha:0.22]; | ||
| } | ||
|
|
||
| @end |
This file was deleted.
Oops, something went wrong.
Oops, something went wrong.