/// <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>True if command finished ok</returns>
internal override bool DialFinish(Control wnd)
{
// If it's the offset dialog that's just finished, grab info
// from it, delete it, and go to the dialog for the first
// terminal line.
ISpatialDisplay view = ActiveDisplay;
UpdateUI up = this.Update;
if (m_ParDial!=null)
{
// Get info from dialog (it'll be ONE of the two). The dialog
// should only call this function after validating that one
// of them is defined.
m_OffsetPoint = m_ParDial.OffsetPoint;
if (m_OffsetPoint==null)
m_Offset = m_ParDial.OffsetDistance;
// Destroy the dialog.
KillDialogs();
// Calculate the positions for the parallel points.
Calculate();
// Repaint what we know about.
Draw();
// And start the dialog for the first terminal line.
if (up!=null)
m_TermDial1 = new TerminalControl(up, false);
else
m_TermDial1 = new TerminalControl(this, false);
//m_TermDial1.Show();
this.Container.Display(m_TermDial1);
return true;
}
if (m_TermDial1!=null)
{
// Get the first terminal line (if any). And the position.
m_TermLine1 = m_TermDial1.TerminalLine;
m_Term1 = m_TermDial1.TerminalPosition;
// And move on to the 2nd terminal dialog.
KillDialogs();
// Repaint what we know about.
Draw();
// And start the dialog for the first terminal line.
if (up!=null)
m_TermDial2 = new TerminalControl(up, true);
else
m_TermDial2 = new TerminalControl(this, true);
this.Container.Display(m_TermDial2);
//m_TermDial2.Show();
return true;
}
if (m_TermDial2==null)
throw new Exception("ParallelLineUI.DialFinish - No dialog!");
// Get the nortthern terminal line (if any). And the position.
m_TermLine2 = m_TermDial2.TerminalLine;
m_Term2 = m_TermDial2.TerminalPosition;
// Erase everything special that we've drawn.
ErasePainting();
// And ensure the view has nothing selected (sometimes the line
// last selected had been unhighlighted, although it's end points
// stay highlighted for some reason).
EditingController.Current.ClearSelection();
// If we are doing an update, remember the changes
if (up!=null)
{
// Get the original operation.
ParallelLineOperation op = (ParallelLineOperation)up.GetOp();
if (op==null)
throw new Exception("ParallelLineUI.DialFinish - Unexpected edit type.");
// Note the offset (it SHOULD be defined)
Observation offset = null;
if (m_Offset != null)
offset = m_Offset;
else if (m_OffsetPoint != null)
offset = new OffsetPoint(m_OffsetPoint);
Debug.Assert(offset != null);
// Remember the changes as part of the UI object (the original edit remains
// unchanged for now)
UpdateItemCollection changes = op.GetUpdateItems(m_Line, offset, m_TermLine1, m_TermLine2, m_IsReversed);
if (!up.AddUpdate(op, changes))
return false;
}
else
{
Observation offset = m_Offset;
if (offset == null && m_OffsetPoint != null)
offset = new OffsetPoint(m_OffsetPoint);
Debug.Assert(offset!= null);
// Execute the edit
ParallelLineOperation op = null;
try
{
op = new ParallelLineOperation(m_Line, offset, m_TermLine1, m_TermLine2, m_IsReversed);
op.Execute();
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
return false;
}
}
// Destroy the dialog(s).
KillDialogs();
// Get the base class to finish up.
return FinishCommand();
}
/// <summary>
/// Destroys any dialogs that are currently displayed.
/// </summary>
void KillDialogs()
{
this.Container.Clear();
if (m_ParDial!=null)
{
m_ParDial.Dispose();
m_ParDial = null;
}
if (m_TermDial1!=null)
{
m_TermDial1.Dispose();
m_TermDial1 = null;
}
if (m_TermDial2!=null)
{
m_TermDial2.Dispose();
m_TermDial2 = null;
}
}
/// <summary>
/// Initializes everything with null values. For used by constructors.
/// </summary>
void SetZeroValues()
{
m_Line = null;
m_ParDial = null;
m_Offset = null;
m_OffsetPoint = null;
m_IsReversed = false;
m_TermDial1 = null;
m_TermLine1 = null;
m_TermDial2 = null;
m_TermLine2 = null;
m_Par1 = null;
m_Par2 = null;
m_Term1 = null;
m_Term2 = null;
}