An NSTextField subclass that supports highlighting the portion of its contents that matches a search string.
EJVHighlightingTextField has the following properties:
// Key-value observable, bindable
@property (nullable, nonatomic, strong) NSString *searchString;
// Defaults to yellow
@property (nonatomic, strong) NSColor *matchesHighlightColor;
// Applied when the text field's cell has a background style of NSBackgroundStyleDark. Defaults to yellow
@property (nonatomic, strong) NSColor *matchesHighlightColorForHighlightedBackground;
// Default value: NO
@property (nonatomic) BOOL underlineMatches;
The searchString property determines the text to look for and highlight in the text field. It can be bound to, for example, another text field's content:
[self.searchField bind:NSValueBinding
toObject:self.highlightingTextField
withKeyPath:@"searchString"
options:@{ NSContinuouslyUpdatesValueBindingOption: @YES }];