/// <summary>
/// Starts the user interface (if any) for this command.
/// </summary>
/// <returns>True if command started ok.</returns>
internal override bool Run()
{
// Don't run more than once.
if (m_Dialog != null)
{
throw new InvalidOperationException("RadialUI.Run - Command is already running.");
}
UpdateUI pup = this.Update;
if (pup != null)
{
m_Dialog = new RadialControl(pup);
}
else
{
if (m_From == null)
{
RadialOperation recall = (RadialOperation)this.Recall;
m_From = recall.From;
}
m_Dialog = new RadialControl(this, m_From);
}
this.Container.Display(m_Dialog);
return(true);
}
/// <summary>
/// Reacts to selection of the OK button in the dialog.
/// </summary>
/// <param name="wnd">The dialog window. If this matches the dialog that
/// this command knows about, the command will be executed (and, on success,
/// the dialog will be destroyed). If it's some other window, it must
/// be a sub-dialog created by our guy, so let it handle the request.</param>
/// <returns></returns>
internal override bool DialFinish(Control wnd)
{
if (m_Dialog == null)
{
MessageBox.Show("RadialUI.DialFinish - No dialog!");
return(false);
}
// Handle any sub-dialog request.
if (m_Dialog != wnd)
{
return(m_Dialog.DialFinish(wnd));
}
// If we are doing an update, remember the changes
UpdateUI up = this.Update;
if (up != null)
{
RadialOperation pop = (up.GetOp() as RadialOperation);
if (pop == null)
{
MessageBox.Show("RadialUI.DialFinish - Unexpected edit type.");
return(false);
}
// Get info from the dialog.
Direction dir = m_Dialog.Direction;
Observation len = m_Dialog.Length;
// The direction and length must both be defined.
if (dir == null || len == null)
{
MessageBox.Show("Missing parameters for sideshot update.");
return(false);
}
// Remember the changes as part of the UI object (the original edit remains
// unchanged for now)
UpdateItemCollection changes = pop.GetUpdateItems(dir, len);
if (!up.AddUpdate(pop, changes))
{
return(false);
}
}
else
{
// Get info from the dialog.
Direction dir = m_Dialog.Direction;
Observation len = m_Dialog.Length;
IdHandle idh = m_Dialog.PointId;
IEntity lineEnt = null;
if (m_Dialog.WantLine)
{
lineEnt = CadastralMapModel.Current.DefaultLineType;
if (lineEnt == null)
{
throw new InvalidOperationException("No default entity type for lines");
}
}
// The direction, length, and point entity type must all be defined.
if (dir == null || len == null || idh.Entity == null)
{
MessageBox.Show("Missing parameters for sideshot creation.");
return(false);
}
RadialOperation pop = null;
try
{
pop = new RadialOperation(dir, len);
pop.Execute(idh, lineEnt);
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
}
}
// Get the base class to finish up.
return(FinishCommand());
}
