private void RevertCurrentCommandState()
{
// Is there a current state to revert back?
if (_currentCmdState != null)
{
// Is the command currently open?
if (_currentCmdState.State == ItemState.Open)
{
// Cast to expected interface
ICommandOpen commandOpen = _currentCmdState.Command as ICommandOpen;
// Ask the command to close itself now
commandOpen.Close();
// No longer have logical capture of mouse
_mouseCapture = false;
}
// Revert it back to normal state
_currentCmdState.State = ItemState.Normal;
// Make sure it is repainted
Invalidate(_currentCmdState.DrawRect);
// Remove command from being current
_currentCmdState = null;
}
}
private void MakeStateOpen(CommandState commandDown, Point pt)
{
// Remove any tooltip
KillTooltip();
// If current command is not the new one, then revert it
RevertCurrentCommandState(commandDown);
// Make this the new command
_currentCmdState = commandDown;
// Do we have a valid command to open?
if (_currentCmdState != null)
{
// Switch to the hot tracking mode
_currentCmdState.State = ItemState.Open;
// Make sure it is repainted
Invalidate(_currentCmdState.DrawRect);
// Cast to expected interface
ICommandOpen commandOpen = commandDown.Command as ICommandOpen;
// Ask the command to open itself now
commandOpen.Open(pt);
}
}
private bool CanCommandOpen(CommandState state)
{
// Cast the embedded command to relevant interface
ICommandOpen commandOpen = state.Command as ICommandOpen;
// Does the target have correct interface and request to be opened?
if ((commandOpen != null) && commandOpen.CanOpen())
{
return(true);
}
// Failed, cannot open
return(false);
}
