this helps you do @mention #hashtag completion by abstracting away the regex logic
The sample implements @mention completion on a UITextView by allowing you to select from a list of predefined names in a UITableView.
Take control of a UITextView and become the delegate with the constructor:
- (id) initWithTextView:(UITextView *)textView delegate:(id <GGHashtagMentionDelegate>)delegate;
As the delegate, you may implement any of the following:
- (void) hashtagMentionController:(GGHashtagMentionController *)hashtagMentionController onMentionWithText:(NSString *)text range:(NSRange)range;
- (void) hashtagMentionController:(GGHashtagMentionController *)hashtagMentionController onHashtagWithText:(NSString *)text range:(NSRange)range;
When your UITextView's text property changes, GGHashtagMentionController checks to see if the cursor is touching a word starting with a @ or #. The corresponding callback is then triggered.
The text property is the portion of the word that comes after the modifier. i.e., @word => word, #asdf => asdf, and @#hehehoho => #hehehoho.
The range property indicates the range of the text in relation to the entire text of the of the UITextView, this is to help you autocomplete the word.
- (void) hashtagMentionControllerDidFinishWord:(GGHashtagMentionController *)hashtagMentionController;
This gets called if the change in the text property ends a word. i.e., by pressing spacebar.
GGHashtagMentionController is available under the MIT license. See the LICENSE file for more info.