private OutputParams ProcessWindow(InputParams inputs, ref bool SkillIsPausable)
{
//This is the implementation of the "first" Method provided to the Skills (the "process method")
//Remark : this method is quite complicated because it has to deal with windows and HMI, so it requires access to the UI thread.
//Skill is currently not pausable
SkillIsPausable = false;
InputsForFakeWindow value;
//First cast the inputs
try
{
value = (InputsForFakeWindow)inputs.Values;
}
catch (System.InvalidCastException ex)
{
//If you can't cast the inputs, then there is a special error code for this
return(new OutputParams(Skill.ERROR_VALUES_PROCESS_INVALID, null));
}
//Then execute the code
try
{
//Lets say skill is productive (even if it is not that true)
inputs.IsProductive = true;
//Update remaining time
value.RemainingTimeMs = value.ExecutionTimeMs;
inputs.RemainingDuration = (UInt32)value.RemainingTimeMs;
//First Ask (the UI thread) to pop a new window
InputsForFakeWindow argsFirst = new InputsForFakeWindow()
{
StartANewWindow = true,
RemainingTimeMs = value.RemainingTimeMs,
CloseTheWindow = false,
ExecutionTimeMs = value.ExecutionTimeMs,
NameOfSkill = value.NameOfSkill,
Status = "EXECUTING"
};
OnDisplayOnSkillWindow(argsFirst);
//Then perform a loop, each second, after each second
int subdivision = value.ExecutionTimeMs / 1000;
//You can subscribe to the "Pausing" event, if you want to have notification of the Pausing.
//The SEE mother class also subscribed to that event, to notify the OPC-UA about the state change
inputs.Pausing += inputs_Pausing;
if (subdivision >= 1)
{
//SKill is now pausable => turn SkillIsPausable to true
SkillIsPausable = true;
//there are more than 1 second of execution time
for (int i = 0; i < subdivision; i++)
{
double remainingTime = (((double)value.ExecutionTimeMs) - i * 1000.0);
inputs.StopOrPauseIfRequired(); //You can use this line of code to block or stop the execution, if a Stop or pause was required
InputsForFakeWindow argsLoop = new InputsForFakeWindow()
{
StartANewWindow = false,
RemainingTimeMs = (int)remainingTime,
CloseTheWindow = false,
ExecutionTimeMs = value.ExecutionTimeMs,
NameOfSkill = value.NameOfSkill,
Status = "EXECUTING"
};
OnDisplayOnSkillWindow(argsLoop);
//Update remaining time before sleeping
inputs.RemainingDuration = (UInt32)remainingTime;
//Sleep 1s
System.Threading.Thread.Sleep(1000);
inputs.StopOrPauseIfRequired(); //You can use this line of code to block or stop the execution, if a Stop or pause was required
}
double LastValue = (((double)value.ExecutionTimeMs) - subdivision * 1000.0);
inputs.StopOrPauseIfRequired(); //You can use this line of code to block or stop the execution, if a Stop or pause was required
InputsForFakeWindow argsLastLoop = new InputsForFakeWindow()
{
StartANewWindow = false,
RemainingTimeMs = (int)LastValue,
CloseTheWindow = false,
ExecutionTimeMs = value.ExecutionTimeMs,
NameOfSkill = value.NameOfSkill,
Status = "EXECUTING"
};
OnDisplayOnSkillWindow(argsLastLoop);
//SKill is no longer pausable => turn SkillIsPausable to false
SkillIsPausable = false;
inputs.StopOrPauseIfRequired();
inputs.Pausing -= inputs_Pausing;
//Update remaining time before sleeping
inputs.RemainingDuration = (UInt32)LastValue;
//Sleep the remaining time
System.Threading.Thread.Sleep((int)LastValue);
}
else
{
//there are Less than 1 second of execution time
//SKill is now pausable => turn SkillIsPausable to true
SkillIsPausable = true;
inputs.StopOrPauseIfRequired();//You can use this line of code to block or stop the execution, if a Stop or pause was required
InputsForFakeWindow argsLess1 = new InputsForFakeWindow()
{
StartANewWindow = false,
RemainingTimeMs = value.ExecutionTimeMs,
CloseTheWindow = false,
ExecutionTimeMs = value.ExecutionTimeMs,
NameOfSkill = value.NameOfSkill,
Status = "EXECUTING"
};
OnDisplayOnSkillWindow(argsLess1);
//SKill is no longer pausable => turn SkillIsPausable to false
SkillIsPausable = false;
inputs.StopOrPauseIfRequired();
inputs.Pausing -= inputs_Pausing;
//Update remaining time before sleeping
inputs.RemainingDuration = (UInt32)value.ExecutionTimeMs;
//Sleep
System.Threading.Thread.Sleep(value.ExecutionTimeMs);
}
//Display that skill execution is about to finish
InputsForFakeWindow argsAboutToClose = new InputsForFakeWindow()
{
StartANewWindow = false,
RemainingTimeMs = 0,
CloseTheWindow = false,
ExecutionTimeMs = value.ExecutionTimeMs,
NameOfSkill = value.NameOfSkill,
Status = "ABOUT TO FINISH : ANSWER QUESTION FIRST"
};
OnDisplayOnSkillWindow(argsAboutToClose);
//Then finnaly, you have to prepare the "OutputParams".
//These "OutputParams" then returned in the overriden method GetOutputsOfExecutedSkill
//So take care of what you are providing
OutputParams outp = InterativeAskReturnedCode(value, ERROR_DURING_EXECUTION);
InputsForFakeWindow argsClose = new InputsForFakeWindow()
{
StartANewWindow = false,
RemainingTimeMs = 0,
CloseTheWindow = false,
ExecutionTimeMs = value.ExecutionTimeMs,
NameOfSkill = value.NameOfSkill,
Status = "FINISHED"
};
OnDisplayOnSkillWindow(argsClose);
//Check if you have an alternative post condition
if (value.AlternativePostConditionAvailable && outp.ReturnCode == 0)
{
//Ask user if he wants to go to alternative post condition
System.Windows.MessageBoxResult res = System.Windows.MessageBox.Show("Do you want to go to alternative post condition?", "Alternative", System.Windows.MessageBoxButton.YesNo);
switch (res)
{
case System.Windows.MessageBoxResult.Yes:
outp.GoToAlternativePostCondition = true;
break;
default:
outp.GoToAlternativePostCondition = false;
break;
}
}
//you don't have to Update remaining time to "0" => it is already done in the SEE mother class
return(outp);
}
catch (OperationCanceledException ex)
{
//External element asked for "emergency stop".
//The "Closing Method" will be called (second method passed to the constructor of the skill)
//You can do some memory freeing here.
//And then, rethrow the exception
throw;
}
catch (Exception ex)
{
return(new OutputParams(ERROR_DURING_EXECUTION, null, false, new SkillProException(ex.Message, ex)));
}
}