Repo created

iphone/Maps/Classes/MWMTextView.m

@@ -0,0 +1,95 @@
+#import "MWMTextView.h"
+
+@interface MWMTextView ()
+
+@property(nonatomic, readwrite) UILabel *placeholderView;
+
+@end
+
+@implementation MWMTextView
+
+- (void)awakeFromNib {
+  [super awakeFromNib];
+  [self setTextContainerInset:UIEdgeInsetsZero];
+  [self updatePlaceholderVisibility];
+
+  [NSNotificationCenter.defaultCenter addObserver:self
+                                         selector:@selector(textDidChange:)
+                                             name:UITextViewTextDidChangeNotification
+                                           object:self];
+  self.clipsToBounds = YES;
+}
+
+- (void)dealloc {
+  [NSNotificationCenter.defaultCenter removeObserver:self];
+}
+
+- (UILabel *)placeholderView {
+  if (!_placeholderView) {
+    _placeholderView = [[UILabel alloc] initWithFrame:self.bounds];
+    _placeholderView.opaque = NO;
+    _placeholderView.backgroundColor = UIColor.clearColor;
+    _placeholderView.textColor = [UIColor lightGrayColor];
+    _placeholderView.textAlignment = self.textAlignment;
+    _placeholderView.userInteractionEnabled = NO;
+    _placeholderView.font = self.font;
+    _placeholderView.isAccessibilityElement = NO;
+    _placeholderView.numberOfLines = 0;
+  }
+  return _placeholderView;
+}
+
+#pragma mark - Setters
+
+- (NSString *)placeholder {
+  return self.placeholderView.text;
+}
+
+- (void)setPlaceholder:(NSString *)placeholder {
+  self.placeholderView.text = placeholder;
+}
+
+- (void)setFont:(UIFont *)font {
+  [super setFont:font];
+  self.placeholderView.font = font;
+}
+
+- (void)setAttributedText:(NSAttributedString *)attributedText {
+  [super setAttributedText:attributedText];
+  [self updatePlaceholderVisibility];
+}
+
+- (void)setText:(NSString *)text {
+  [super setText:text];
+  [self updatePlaceholderVisibility];
+}
+
+- (void)setTextAlignment:(NSTextAlignment)textAlignment {
+  [super setTextAlignment:textAlignment];
+  self.placeholderView.textAlignment = textAlignment;
+}
+
+- (void)layoutSubviews {
+  [super layoutSubviews];
+  UIEdgeInsets inset = self.textContainerInset;
+  self.placeholderView.frame = CGRectMake(inset.left + self.textContainer.lineFragmentPadding,
+                                          inset.top,
+                                          self.bounds.size.width - inset.right,
+                                          self.bounds.size.height - inset.bottom);
+  [self.placeholderView sizeToFit];
+}
+
+- (void)textDidChange:(NSNotification *)aNotification {
+  [self updatePlaceholderVisibility];
+}
+
+- (void)updatePlaceholderVisibility {
+  if (self.text.length == 0) {
+    [self addSubview:self.placeholderView];
+    [self sendSubviewToBack:self.placeholderView];
+  } else {
+    [self.placeholderView removeFromSuperview];
+  }
+}
+
+@end