public void ApplyTemplate(TagItem appliedTag = null, bool cancelEvent = false)
{
var createBtn = GetTemplateChild("PART_CreateTagButton") as Button;
if (createBtn != null)
{
createBtn.Click -= createBtn_Click;
createBtn.Click += createBtn_Click;
}
var tagIcon = GetTemplateChild("PART_TagIcon") as Path;
if (tagIcon != null)
{
tagIcon.MouseUp -= createBtn_Click;
tagIcon.MouseUp += createBtn_Click;
}
base.OnApplyTemplate();
if (appliedTag != null && !cancelEvent)
{
RaiseTagAdded(appliedTag);
}
}
private void UpdateSelectedTagsOnAdd(TagItem addedTag)
{
var source = (IList <TagItem>)ItemsSource;
//if (source.Count == SelectedTags.Count) //Update SelectedTags list if user edits tags
// SelectedTags.Where(i => source.All(s => !s.Text.Equals(i) || i.Equals(addedTag.Text)))
// .ToList()
// .ForEach(r => SelectedTags.Remove(r));
// SelectedTags.Add(((TagObject)addedTag.Value));
}
internal void AddTag(TagItem tag)
{
if (ItemsSource == null)
{
ItemsSource = new List <TagItem>();
}
((IList)ItemsSource).Add(tag); // assume IList for convenience
Items.Refresh();
}
internal TagItem InitializeNewTag(bool suppressEditing = false)
{
var newItem = new TagItem {
IsEditing = !suppressEditing
};
AddTag(newItem);
IsEditing = !suppressEditing;
return(newItem);
}
internal void RemoveTag(TagItem tag, bool cancelEvent = false)
{
if (ItemsSource != null)
{
((IList)ItemsSource).Remove(tag); // assume IList for convenience
Items.Refresh();
if (!cancelEvent)
{
RaiseTagRemoved(tag);
}
}
}
private void UpdateSelectedTagsOnRemove(TagItem removedTag)
{
if (removedTag == null)
{
return;
}
var its = Tags;
if (its is IList)
{
((IList)its).Remove(removedTag.Value);
}
}
private void UpdateSelectedTagsOnRemove(TagItem removedTag)
{
if (removedTag == null)
{
return;
}
if (!string.IsNullOrEmpty(removedTag.Text)) // Remove if delete button was clicked
{
SelectedTags.Remove(removedTag.Text);
}
else // Remove if backspace was used to delete tag (TagItem Text was changed to empty and was then removed)
{
var source = (IList <TagItem>)ItemsSource;
SelectedTags.Where(i => source.All(s => !s.Text.Equals(i)))
.ToList()
.ForEach(r => SelectedTags.Remove(r));
}
}
internal void RaiseTagDoubleClick(TagItem tag)
{
tag.IsEditing = true;
}
internal void RaiseTagAdded(TagItem tag)
{
UpdateSelectedTagsOnAdd(tag);
Debug.WriteLine($"RaiseTagAdded: {tag.Text}");
TagAdded?.Invoke(this, new TagEventArgs(tag));
}
internal void RaiseTagClick(TagItem tag)
{
TagClick?.Invoke(this, new TagEventArgs(tag));
}
private void RaiseTagRemoved(TagItem tag)
{
UpdateSelectedTagsOnRemove(tag);
Debug.WriteLine($"RaiseTagRemoved: {tag.Text}");
TagRemoved?.Invoke(this, new TagEventArgs(tag));
}
public void RaiseTagEdited(TagItem tag)
{
UpdateSelectedTagsOnEdit();
Debug.WriteLine($"RaiseTagEdited: {tag.Text}");
TagEdited?.Invoke(this, new TagEventArgs(tag));
}
public TagEventArgs(TagItem item)
{
this.Item = item;
}