public bool Remove(View item)
{
if (item == null)
{
return(false);
}
var index = Views.IndexOf(item);
if (index >= 0)
{
item.Parent = null;
item.Navigation = null;
var removed = new List <View> {
item
};
Views.Remove(item);
OnRemoved(item);
ChildrenRemoved?.Invoke(this, new LayoutEventArgs(index, 1, removed));
return(true);
}
return(false);
}
public void Clear()
{
var count = _views.Count;
if (count > 0)
{
var removed = new List <View>(_views);
_views.Clear();
ChildrenRemoved?.Invoke(this, new LayoutEventArgs(0, count, removed));
}
}
public void RemoveAt(int index)
{
if (index >= 0 && index < _views.Count)
{
var item = _views[index];
item.Parent = null;
item.Navigation = null;
var removed = new List <View> {
item
};
_views.RemoveAt(index);
ChildrenRemoved?.Invoke(this, new LayoutEventArgs(index, 1, removed));
}
}
public void RemoveChildren(IEnumerable <ITreeItem> children)
{
List <ITreeItem> removed = new List <ITreeItem>();
foreach (ITreeItem child in children)
{
if (Remove(child, false))
{
removed.Add(child);
}
}
if (removed.Count > 0)
{
TreeItemChildrenRemoveEventArgs args =
new TreeItemChildrenRemoveEventArgs(removed);
ChildrenRemoved?.Invoke(this, args);
}
}
private bool Remove(ITreeItem child, bool sendEvent)
{
if (children.Contains(child))
{
child.Parent = null;
children.Remove(child);
if (sendEvent)
{
TreeItemChildrenRemoveEventArgs args =
new TreeItemChildrenRemoveEventArgs(new List <ITreeItem>()
{
child
});
ChildrenRemoved?.Invoke(this, args);
}
return(true);
}
return(false);
}
