// Look up a direct or indirect child control.
public InputControl TryGetControl(InputControl parent, string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentException("path");
}
if (m_Device == null)
{
return(null);
}
if (parent == null)
{
parent = m_Device;
}
var match = InputControlPath.TryFindChild(parent, path);
if (match != null)
{
return(match);
}
if (ReferenceEquals(parent, m_Device))
{
return(InputControlPath.TryFindControl(m_Device, string.Format("{0}/{1}", m_Device.name, path)));
}
return(null);
}
private InputControl InsertChildControl(InputTemplate template, InternedString variant, InputControl parent,
ref bool haveChildrenUsingStateFromOtherControls,
ref InputTemplate.ControlTemplate controlTemplate)
{
var path = controlTemplate.name.ToString();
// First we need to find the immediate parent from the given path.
var indexOfSlash = path.LastIndexOf('/');
if (indexOfSlash == -1)
{
throw new ArgumentException("InsertChildControl has to be called with a slash-separated path", "path");
}
Debug.Assert(indexOfSlash != 0);
var immediateParentPath = path.Substring(0, indexOfSlash);
var immediateParent = InputControlPath.TryFindChild(parent, immediateParentPath);
if (immediateParent == null)
{
throw new Exception(
string.Format("Cannot find parent '{0}' of control '{1}' in template '{2}'", immediateParentPath,
controlTemplate.name, template.name));
}
var controlName = path.Substring(indexOfSlash + 1);
if (controlName.Length == 0)
{
throw new Exception(
string.Format("Path cannot end in '/' (control '{0}' in template '{1}')", controlTemplate.name,
template.name));
}
// Make room in the device's child array.
var childStartIndex = immediateParent.m_ChildrenReadOnly.m_StartIndex;
var childIndex = childStartIndex + immediateParent.m_ChildrenReadOnly.m_Length;
ArrayHelpers.InsertAt(ref m_Device.m_ChildrenForEachControl, childIndex, null);
++immediateParent.m_ChildrenReadOnly.m_Length;
// Insert the child.
var control = AddChildControl(template, variant, immediateParent, null,
ref haveChildrenUsingStateFromOtherControls, ref controlTemplate, ref childIndex, controlName);
// Adjust indices of control's that have been shifted around by our insertion.
ShiftChildIndicesInHierarchyOneUp(parent, childIndex);
return(control);
}
public InputControl this[string path]
{
get { return(InputControlPath.TryFindChild(this, path)); }
}
