public bool ShouldChangeCharacters(UITextView textView, NSRange range, string text)
{
if (!isPressingBackspace(range, text))
{
return(true);
}
var cursorPosition = range.Location;
var attrs = textView.AttributedText.GetAttributes(cursorPosition, out var attrRange);
var isDeletingProject = attrs.ObjectForKey(TimeEntryTagsTextView.RoundedBackground) != null;
if (isDeletingProject)
{
ProjectDeleted.Raise(this);
return(false);
}
var isDeletingTag = attrs.ObjectForKey(TimeEntryTagsTextView.RoundedBorders) != null;
if (isDeletingTag)
{
TagDeleted?.Invoke(this, new TagDeletedEventArgs(cursorPosition));
return(false);
}
return(true);
}
public override bool ShouldChangeText(UITextView textView, NSRange range, string text)
{
if (isTypingMultistageCharacter(range, text))
{
IsWritingMultistageCharacter.Raise(this);
return(true);
}
if (!isPressingBackspace(range, text))
{
return(true);
}
var cursorPosition = range.Location;
var attrs = textView.AttributedText.GetAttributes(cursorPosition, out var attrRange);
var isDeletingProject = attrs.ObjectForKey(TokenExtensions.Project) != null;
if (isDeletingProject)
{
ProjectDeleted.Raise(this);
return(false);
}
var tagIndex = attrs.ObjectForKey(TokenExtensions.TagIndex) as NSNumber;
var isDeletingTag = tagIndex != null;
if (isDeletingTag)
{
TagDeleted?.Invoke(this, new TagDeletedEventArgs((int)cursorPosition, tagIndex.Int32Value));
return(false);
}
return(true);
}
public void BeforeTextChanged(ICharSequence sequence, int start, int count, int after)
{
var isDeleting = count > after;
if (!isDeleting) return;
var spannable = sequence as SpannableStringBuilder;
var deletedSpan = spannable.GetSpans(start, start, Class.FromType(typeof(TokenSpan))).LastOrDefault();
if (deletedSpan == null) return;
if (deletedSpan is ProjectTokenSpan)
{
ProjectDeleted?.Raise(this);
}
else if (deletedSpan is TagsTokenSpan tagSpan)
{
TagDeleted?.Invoke(this, new TagDeletedEventArgs(start, tagSpan.TagIndex));
}
}