public async Task <bool> Remove(TValue datasourceItemToDelete)
{
if (datasourceItemToDelete == null)
{
return(false);
}
var eventItemsToRemove = new List <TValue>();
//Find all the tree items that need to be removed
var treeItemToRemove = FindTreeItem(datasourceItemToDelete);
//This list includes the item to delete as well.
var treeItemsToRemove = FindAllTreeItemChildren(treeItemToRemove);
//Remove the child items from the datasource and treeItems
foreach (var treeitem in treeItemsToRemove)
{
//Remove the child from the parent treeitem.
DelinkTreeItemFromParent(treeitem);
_treeItems.Remove(treeitem);
//Remove the item from Original Datasource
var childItemToRemove = FindObjectFromDatasource(treeitem);
eventItemsToRemove.Add(childItemToRemove);
Datasource.Remove(childItemToRemove);
}
await OnItemsRemoved.InvokeAsync(eventItemsToRemove);
await NotifyDatasourceChanged();
Console.WriteLine($"Successfully removed {treeItemToRemove.Label}");
return(true);
}
private void Window_KeyDown(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.Space:
case Key.Play:
case Key.Pause:
case Key.MediaPlayPause:
{
if (lvwFiles.SelectedItems.Count == 0)
{
return;
}
OnTogglePaused?.Invoke(lvwFiles.SelectedItems.Cast <Models.PlaylistItem>());
return;
}
case Key.OemPlus:
case Key.Add:
{
if (lvwFiles.SelectedItems.Count == 0)
{
return;
}
OnItemsVolumeChanged?.Invoke(lvwFiles.SelectedItems.Cast <Models.PlaylistItem>(), +1);
return;
}
case Key.OemMinus:
case Key.Subtract:
{
if (lvwFiles.SelectedItems.Count == 0)
{
return;
}
OnItemsVolumeChanged?.Invoke(lvwFiles.SelectedItems.Cast <Models.PlaylistItem>(), -1);
return;
}
case Key.Delete:
{
if (lvwFiles.SelectedItems.Count == 0)
{
return;
}
OnItemsRemoved?.Invoke(lvwFiles.SelectedItems.Cast <Models.PlaylistItem>());
return;
}
}
}
