private static void Main()
{
// Application_A
var service = new CustomerService();
var command = new AddCustomerCommand(service);
var button = new Button(command);
button.Click();
// Application_B
var composite = new CompositeCommand();
composite.Add(new ResizeCommand());
composite.Add(new BlackAndWhiteCommand());
composite.Execute();
// Application_C
var history = new History();
var document = new HtmlDocument
{
Content = "Hello World"
};
var boldCommand = new BoldCommand(document, history);
boldCommand.Execute();
System.Console.WriteLine(document.Content); // <b>Hello World</b>
var undoCommand = new UndoCommand(history);
undoCommand.Execute();
System.Console.WriteLine(document.Content); // Hello World
}
/// <summary>
/// Allows decouple a sender from a receiver. The sender will talk to the receive through a command. Commands can be undone and persisted.
///
/// With Command its easy to build an independent framework that anyone can use. By creating a custom service which implements a base interface,
/// any command can be run with the same method, depending on the service.
/// </summary>
static void Command()
{
// One command attached to an action.
var service = new CustomerService();
var command = new AddCustomerCommand(service);
var button = new Command.fx.Button(command);
button.Click();
// Multiple commands attached to an action.
var composite = new CompositeCommand();
composite.Add(new ResizeCommand());
composite.Add(new BlackAndWhiteCommand());
composite.Execute();
// Using the undo mechanism. Multiple commands are implementing the same interface(s) and using the same history.
var history = new Command.editor.History();
var document = new Command.editor.HtmlDocument();
document.Content = "Hello";
var boldCommand = new BoldCommand(document, history);
boldCommand.Execute();
Console.WriteLine(document.Content);
var undoCommant = new UndoCommand(history);
undoCommant.Execute();
Console.WriteLine(document.Content);
}
static void TestUndoableCommand()
{
var history = new Command.Editor.History();
var document = new Command.Editor.HtmlDocument();
document.Content = "Hello World";
var boldCommand = new BoldCommand(document, history);
boldCommand.Execute();
System.Console.WriteLine(document.Content);
document.Content = "This is Command Pattern";
boldCommand = new BoldCommand(document, history);
boldCommand.Execute();
System.Console.WriteLine(document.Content);
var undoCommand = new UndoCommand(history);
undoCommand.Execute();
System.Console.WriteLine(document.Content);
undoCommand.Execute();
System.Console.WriteLine(document.Content);
}
static void Main(string[] args)
{
var history = new History();
var document = new HtmlDocument();
document.Content = "Hello World";
var boldCommand = new BoldCommand(document, history);
boldCommand.Execute();
Console.WriteLine(document.Content);
var undoCommand = new UndoCommand(history);
undoCommand.Execute();
Console.WriteLine(document.Content);
Console.ReadKey();
//TODO: add more commands here
var service = new CustomerService();
var command = new AddCustomerCommand(service);
var button = new Button(command);
button.Click();
Console.ReadKey();
var composite = new CompositeCommand();
composite.Add(new ResizeCommand());
composite.Add(new BlackAndWhiteCommand());
composite.Execute();
Console.ReadKey();
}
static void Main(string[] args)
{
var addCustomerCommand = new AddCustomerCommand(new CustomerService());
var button = new Button(addCustomerCommand);
button.Click();
// Because we are representing each individual task using a command object,
// we can combine these commands inside a composite object and re-execute them later on.
var compositeCommand = new CompositeCommand();
compositeCommand.Add(new ResizeCommand());
compositeCommand.Add(new BlackAndWhiteCommand());
compositeCommand.Execute();
var history = new Solution.UndoableCommands.History();
var htmlDocument = new HtmlDocument();
htmlDocument.Content = "Hello World!";
var boldCommand = new BoldCommand(htmlDocument, history);
boldCommand.Execute();
Console.WriteLine(htmlDocument.Content);
//boldCommand.Unexecute();
var undoCommand = new Solution.UndoableCommands.UndoCommand(history);
undoCommand.Execute();
Console.WriteLine(htmlDocument.Content);
Console.WriteLine("--- Exercise ---");
var exeHistory = new Exercise.End.History();
var videoEditor = new VideoEditor();
var setTextCommand = new SetTextCommand("Hello World!", videoEditor, exeHistory);
setTextCommand.Execute();
Console.WriteLine(videoEditor.Text);
//setTextCommand.Undo();
var exeUndoCommand = new Exercise.End.UndoCommand(exeHistory);
exeUndoCommand.Execute();
Console.WriteLine(videoEditor.Text);
Console.ReadLine();
}
public CommandPatternMain()
{
var boldCommand = new BoldCommand(_htmlDocument, _history);
var undoCommand = new UndoCommand(_history);
_htmlDocument.Content = "Hello World!";
Console.WriteLine(_htmlDocument.Content);
boldCommand.Execute();
Console.WriteLine(_htmlDocument.Content);
undoCommand.Execute();
Console.WriteLine(_htmlDocument.Content);
}
static void Main(string[] args)
{
History history = new History();
HtmlDocument document = new HtmlDocument();
document.Content = "Hello World";
BoldCommand boldCommand = new BoldCommand(document: document, history);
boldCommand.Execute();
Console.WriteLine(document.Content);
UndoCommand undoCommand = new UndoCommand(history);
undoCommand.Execute();
Console.WriteLine(document.Content);
}
public static void Run()
{
var history = new CommandsHistory();
var document = new HtmlDocument();
document.Content = "Hello World!";
var boldCommand = new BoldCommand(document, history);
boldCommand.Execute();
Console.WriteLine(document.Content);
var undoCommand = new UndoCommand(history);
undoCommand.Execute();
Console.WriteLine(document.Content);
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
// decoupling the customer service from the button
// otherwise all code has to be retained in the button
var service = new CustomerService();
var command = new AddCustomerCommand(service);
var button = new Button(command);
button.Click();
var composite = new CompositeCommand();
composite.Add(new ResizeCommand());
composite.Add(new BlackAndWhiteCommand());
composite.Execute();
var history = new History();
var document = new HtmlDocument {
Content = "Hello World"
};
var bold = new BoldCommand(document, history);
bold.Execute();
Console.WriteLine(document.Content);
var undoCommand = new UndoCommand(history);
undoCommand.Execute();
Console.WriteLine(document.Content);
}
static void Main(string[] args)
{
Console.WriteLine("Enter 1 for Factory Pattern. \n" +
"Enter 2 for Observer Pattern.");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
var ef = new EmployeeFactory();
Console.WriteLine(ef.GetEmployee(1).GetBonus());
Console.ReadLine();
break;
case 2:
var observable = new TemperatureMonitor();
var observer = new TemperatureReporter();
observer.Subscribe(observable);
observable.GetTemperature();
break;
case 3:
var editor = new Editor();
var history = new Momento.History();
editor.SetContent("a");
history.Push(editor.CreateState());
editor.SetContent("b");
history.Push(editor.CreateState());
editor.SetContent("c");
history.Push(editor.CreateState());
editor.Restore(history.Pop());
editor.Restore(history.Pop());
Console.WriteLine(editor.GetContent());
break;
case 4:
Canvas canvas = new Canvas();
canvas.SelectTool(new BrushTool());
canvas.MouseDown();
canvas.MouseUp();
break;
case 5:
BrowseHistory browseHistory = new BrowseHistory();
browseHistory.Push("www.google.com");
browseHistory.Push("www.yahoo.com");
browseHistory.Push("www.reddif.com");
browseHistory.Push("www.youtube.com");
IIterator <string> iterator = browseHistory.CreateIterator();
while (iterator.HasNext())
{
var url = iterator.Current();
Console.WriteLine(url);
iterator.next();
}
break;
case 6:
//The difference between State and Strategy pattern is that in state pattern there is only a single state of the object and the behaviour is determined by the implementation injected.
//In strategy pattern there could be multiple behaviours in form of multiple properties inside class such as IFilter & ICompression. The implementation injected further changes the behaviour.
PhotoProcessor photoProcessor = new PhotoProcessor(new BnW(), new JPEG());
photoProcessor.ProcessPhoto();
break;
case 7: //template
AbstractPreFlightCheckList flightChecklist = new F16PreFlightCheckList();
flightChecklist.runChecklist();
break;
case 8: //command
var service = new CustomerService();
var command = new AddCustomerCommand(service);
var button = new Command.Button(command);
button.click();
var composite = new CompositeCommand();
composite.Add(new ResizeCommand());
composite.Add(new BlackAndWHiteCommand());
var button2 = new Command.Button(composite);
button2.click();
var commandHisotry = new Command.Undo.History();
var doc = new Command.Undo.HtmlDocument();
doc.SetContent("Hello World");
var boldCommand = new BoldCommand(doc, commandHisotry);
boldCommand.Execute();
Console.WriteLine(doc.GetContent());
var undoCommand = new UndoCommand(commandHisotry);
undoCommand.Execute();
Console.WriteLine(doc.GetContent());
break;
case 9: //Observer
DataSource dataSource = new DataSource();
dataSource.AddObserver(new Chart());
dataSource.AddObserver(new SpreadSheet(dataSource));
dataSource.SetValue("value changed");
break;
case 10: //Mediator //the pattern is applied to encapsulate or centralize the interactions amongst a number of objects
var dialog = new ArticlesDialogBox();
dialog.SimulateUsserInteraction();
break;
case 11: //Chain of Responsibility
//autehnticator --> logger --> compressor --> null
var compressor = new Compressor(null);
var logger = new Logger(compressor);
var authenticator = new Authenticator(logger);
var server = new WebServer(authenticator);
server.handle(new HttpRequest()
{
UserName = "******", Password = "******"
});
break;
case 12: //Visitor
var document = new Visitor.HtmlDocument();
document.Add(new HeadingNode());
document.Add(new AnchorNode());
document.Execute(new HighlighOperation());
break;
case 13: // Composite
var shape1 = new Shape();
var shape2 = new Shape();
var group1 = new Group();
group1.Add(shape1);
group1.Add(shape2);
var group2 = new Group();
var shape3 = new Shape();
group2.Add(shape3);
group1.Add(group2);
group1.render();
break;
case 14: //Adapter
Image image = new Image();
ImageViewer imageViewer = new ImageViewer(image);
imageViewer.Apply(new SepiaFilter());
imageViewer.Apply(new FancyAdapter(new FancyFilter()));
break;
case 15: //Decorator
var cloudStream = new CloudStream();
var encryptData = new EncryptStream(cloudStream);
var compressData = new CompressStream(encryptData);
compressData.write("some random data");
break;
case 16: //Facade
NotificationService notificationService = new NotificationService();
notificationService.Send("Hello..", "17.0.0.1");
break;
case 17: //Flyweight
PointService pointService = new PointService(new PointFactory());
var points = pointService.getPoints();
foreach (var p in points)
{
p.draw();
}
break;
case 18: //Bridge
AdvancedRemoteControl remote = new AdvancedRemoteControl(new SonyTv());
remote.setChannel(1);
break;
case 19: //Proxy
Library lib = new Library();
List <string> bookNames = new List <string>()
{
"a", "b", "c"
};
foreach (var book in bookNames)
{
lib.eBooks.Add(book, new EBookProxy(book));
}
lib.OpenEbook("a");
break;
case 20: //Factory Method
FactoryMethod.Employee emp = new FactoryMethod.Employee();
BaseEmployeeFactory permanentEmp = new PermanentEmployeeFactory(emp);
permanentEmp.ApplySalary();
Console.WriteLine(emp.HouseAllowance);
break;
case 21: //Abstract Factory
AbstractFactory.Employee emp1 = new AbstractFactory.Employee();
emp1.EmployeeTypeID = 1;
emp1.JobDescription = "Manager";
EmployeeSystemFactory esf = new EmployeeSystemFactory();
var computerFactory = esf.Create(emp1);
Console.WriteLine($"{computerFactory.GetType()}, {computerFactory.Processor()}, {computerFactory.SystemType()}, {computerFactory.Brand()}");
break;
case 22: //Builder
Builder.IToyBuilder toyBuilder = new Builder.PremiumToyBuilder();
Builder.ToyDirector toyDirector = new Builder.ToyDirector(toyBuilder);
toyDirector.CreateFullFledgedToy();
Console.WriteLine(toyDirector.GetToy());
break;
case 23: //Fluent Builder
//Difference of implementation is visible in Director class.
FluentBuilder.IToyBuilder toyBuilder1 = new FluentBuilder.PremiumToyBuilder();
FluentBuilder.ToyDirector toyDirector1 = new FluentBuilder.ToyDirector(toyBuilder1);
toyDirector1.CreateFullFledgedToy();
Console.WriteLine(toyDirector1.GetToy());
break;
case 24: //Object Pool
ObjectPool <OneExpensiveObjToCreate> objPool = new ObjectPool <OneExpensiveObjToCreate>();
OneExpensiveObjToCreate obj = objPool.Get();
objPool.Release(obj);
break;
}
Console.ReadLine();
}