|
/*
* Thread Proxy Mediator Pattern Example
* Copyright (C) 2008 Michael Birken
*
* This file is part of Thread Proxy Mediator Pattern Example.
*
* Thread Proxy Mediator Pattern Example is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Thread Proxy Mediator Pattern Example is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace WindowsFormsExample {
public class DivisionMediator : IDivisionMediator {
private volatile Divider divider = new Divider();
public void Divide(string dividend, string divisor,
IDividerForm dividerFormProxy, IProgressForm progressFormProxy) {
int a = 0;
int b = 0;
try {
a = Int32.Parse(dividend);
} catch {
dividerFormProxy.ShowError("Dividend is not a valid number.");
return;
}
try {
b = Int32.Parse(divisor);
} catch {
dividerFormProxy.ShowError("Divisor is not a valid number.");
return;
}
progressFormProxy.Display();
int quotient;
bool canceled;
try {
divider.Divide(a, b, out quotient, out canceled, percent => progressFormProxy.DisplayProgress(percent));
} catch (Exception e) {
progressFormProxy.DisplayProgress(100);
dividerFormProxy.DisplayQuotient("?");
dividerFormProxy.ShowError(e.Message);
return;
}
if (canceled) {
progressFormProxy.DisplayProgress(100);
dividerFormProxy.DisplayQuotient("?");
} else {
dividerFormProxy.DisplayQuotient(quotient.ToString());
}
}
public void CancelDivision() {
divider.CancelDivision();
}
}
public interface IDivisionMediator {
void Divide(string dividend, string divisor,
IDividerForm dividerFormProxy, IProgressForm progressFormProxy);
void CancelDivision();
}
}
|
By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.
If a file you wish to view isn't highlighted, and is a text file (not binary), please
let us know and we'll add colourisation support for it.
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.