/// <summary>
/// Raises the TagClick event
/// </summary>
internal void RaiseTagClick(TokenizedTagItem tag)
{
if (TagClick != null)
{
TagClick(this, new TokenizedTagEventArgs(tag));
}
}
/// <summary>
/// Raises the TagClick event
/// </summary>
internal void RaiseTagApplied(TokenizedTagItem tag)
{
if (TagApplied != null)
{
TagApplied(this, new TokenizedTagEventArgs(tag));
}
}
/// <summary>
/// Adds a tag to the collection
/// </summary>
internal void AddTag(TokenizedTagItem tag)
{
TokenizedTagItem itemToSelect = null;
if (SelectedItem == null && Items.Count > 0)
{
itemToSelect = (TokenizedTagItem)SelectedItem;
}
((ObservableCollection <TokenizedTagItem>)ItemsSource).Add(tag); // assume IList for convenience
Items.Refresh();
// select the previous item
if (!ReferenceEquals(itemToSelect, null))
{
RaiseTagClick(itemToSelect);
if (IsSelectable)
{
SelectedItem = itemToSelect;
}
}
if (TagAdded != null)
{
TagAdded(this, new TokenizedTagEventArgs(tag));
}
}
/// <summary>
/// Removes a tag from the collection
/// </summary>
internal void RemoveTag(TokenizedTagItem tag, bool cancelEvent = false)
{
if (ItemsSource != null)
{
((IList)ItemsSource).Remove(tag); // assume IList for convenience
Items.Refresh();
if (TagRemoved != null && !cancelEvent)
{
TagRemoved(this, new TokenizedTagEventArgs(tag));
}
// select the last item
if (SelectedItem == null && Items.Count > 0)
{
//TokenizedTagItem itemToSelect = this.Items.GetItemAt(0) as TokenizedTagItem;
var itemToSelect = Items.GetItemAt(Items.Count - 1) as TokenizedTagItem;
if (!ReferenceEquals(itemToSelect, null))
{
RaiseTagClick(itemToSelect);
if (IsSelectable)
{
SelectedItem = itemToSelect;
}
}
}
}
}
private void TokenizedTagControlLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
if (!IsSelectable)
{
SelectedItem = null;
return;
}
TokenizedTagItem itemToSelect = null;
if (Items.Count > 0 && !ReferenceEquals((TokenizedTagItem)Items.CurrentItem, null))
{
if (SelectedItem != null && ((TokenizedTagItem)SelectedItem).Text != null &&
!((TokenizedTagItem)SelectedItem).IsEditing)
{
itemToSelect = (TokenizedTagItem)SelectedItem;
}
else if (!String.IsNullOrWhiteSpace(((TokenizedTagItem)Items.CurrentItem).Text))
{
itemToSelect = (TokenizedTagItem)Items.CurrentItem;
}
}
// select the previous item
if (!ReferenceEquals(itemToSelect, null))
{
e.Handled = true;
RaiseTagApplied(itemToSelect);
if (IsSelectable)
{
SelectedItem = itemToSelect;
}
}
}
internal TokenizedTagItem InitializeNewTag(bool suppressEditing = false)
{
var newItem = new TokenizedTagItem {
IsEditing = !suppressEditing
};
AddTag(newItem);
UpdateAllTagsProperty();
IsEditing = !suppressEditing;
return(newItem);
}
// ReSharper disable once MethodOverloadWithOptionalParameter
public void OnApplyTemplate(TokenizedTagItem appliedTag = null)
{
var createBtn = GetTemplateChild("PART_CreateTagButton") as Button;
if (createBtn != null)
{
createBtn.Click -= CreateBtnClick;
createBtn.Click += CreateBtnClick;
}
base.OnApplyTemplate();
if (appliedTag != null && !ReferenceEquals(TagApplied, null))
{
TagApplied.Invoke(this, new TokenizedTagEventArgs(appliedTag));
}
}
public TokenizedTagEventArgs(TokenizedTagItem item)
{
Item = item;
}
/// <summary>
/// Raises the TagDoubleClick event
/// </summary>
internal void RaiseTagDoubleClick(TokenizedTagItem tag)
{
UpdateAllTagsProperty();
tag.IsEditing = true;
}
/// <summary>
/// Raises the TagClick event
/// </summary>
internal void RaiseTagApplied(TokenizedTagItem tag)
{
TagApplied?.Invoke(this, new TokenizedTagEventArgs(tag));
}
/// <summary>
/// Raises the TagClick event
/// </summary>
internal void RaiseTagClick(TokenizedTagItem tag)
{
TagClick?.Invoke(this, new TokenizedTagEventArgs(tag));
}