public ControlsTree()
{
_controls = new LinkedList <TvControlMetadata>();
_focused = null;
_componentTree = null;
_indexedControls = new Dictionary <Guid, TvControlMetadata>();
}
public void InsertAfter(TvControlMetadata cdata, int position)
{
if (position < 0)
{
throw new ArgumentException("position must be >=0", nameof(position));
}
var current = _controls.NodeAt(position);
_controls.AddAfter(current, cdata);
_indexedControls.Add(cdata.ControlId, cdata);
}
public TvControl(ISkin skin, IViewport viewport, TState initialState, string name = null)
{
_component = new TvComponent <TState>(initialState, name ?? $"TvControl_<$>");
Metadata = new TvControlMetadata(this, _component.ComponentId);
var typename = GetType().Name.ToLowerInvariant();
var genericIdx = typename.IndexOf('`');
ControlType = genericIdx != -1 ? typename.Substring(0, genericIdx) : typename;
CurrentStyle = skin.GetControlStyle(this);
State = initialState;
_component.AddViewport(viewport);
AddElements();
}
public bool Focus(TvControlMetadata controlToFocus)
{
if (_focused != controlToFocus)
{
if (_focused != null)
{
_focused.Unfocus();
}
controlToFocus.Focus();
_focused = controlToFocus;
return(true);
}
return(false);
}
public TvControlMetadata PreviousControl(TvControlMetadata current)
{
return(_controls.Find(current)?.Previous?.Value);
}
public TvControlMetadata NextControl(TvControlMetadata current)
{
var next = _controls.Find(current)?.Next;
return(next != null ? next.Value : _controls.First.Value);
}
public void Remove(TvControlMetadata cdata)
{
_controls.Remove(cdata);
_indexedControls.Remove(cdata.ControlId);
}
public void Add(TvControlMetadata cdata)
{
_controls.AddLast(cdata);
_indexedControls.Add(cdata.ControlId, cdata);
}