Files
T
2020-11-02 09:45:09 +00:00

220 lines
11 KiB
C#

using System;
using System.CodeDom;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Security.Cryptography;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
using Advanced_Software_Engineering.Verbs;
using Advanced_Software_Engineering.Verbs.DrawingVerbs;
namespace Advanced_Software_Engineering {
/// <summary>
/// This class is responsible for creating Verbs.
/// </summary>
public class VerbFactory {
/// <summary>
/// This function returns a Verb from a command and drawer.
/// </summary>
/// <remarks>
/// This factory is specifically useful since it automatically converts the parameters to what they should be.
/// </remarks>
/// <param name="drawer">The drawer to affect</param>
/// <param name="fullCommand">The command as a string</param>
/// <returns>A verb that maches the command</returns>
public static Verb MakeVerb(Drawer drawer, string fullCommand) {
Dictionary<string, string[]> commandAndParameters = SettingsAndHelperFunctions.CommandAndParameterParser(fullCommand);
if (!commandAndParameters.Keys.Contains("command")) throw new Exception("There is no command to process");
string command = commandAndParameters["command"][0];
string[] parameters = commandAndParameters.Keys.Contains("parameters") ? commandAndParameters["parameters"] : new string[] { };
switch (command) {
case "move":
case "moveto":
//Check parameters
if (parameters.Length == 2) {
return new MoveTo(drawer,
Value.ConvertToInt(parameters[0]),
Value.ConvertToInt(parameters[1]));
} else throw new Exception("Command has an incorrect number of parameters");
case "drawto":
case "line":
case "lineto":
//Check parameters
if (parameters.Length == 2) {
return new
DrawTo(drawer,
Value.ConvertToInt(parameters[0]),
Value.ConvertToInt(parameters[1]));
} else throw new Exception("Command has an incorrect number of parameters");
case "regularpolygon":
case "rp":
//Check parameters
if (parameters.Length == 2) {
return new
RegularPolygon(drawer,
Value.ConvertToInt(parameters[0]),
Value.ConvertToDouble(parameters[1])
);
} else if (parameters.Length == 3) {
return new RegularPolygon(drawer,
Value.ConvertToInt(parameters[0]),
Value.ConvertToDouble(parameters[1]),
Value.ConvertToDouble(parameters[2])
);
} else throw new Exception("Command has an incorrect number of parameters");
case "square":
//Check parameters
if (parameters.Length == 1) {
return new
Square(drawer,
Value.ConvertToDouble(parameters[0])
);
} else if (parameters.Length == 2) {
return new Square(drawer,
Value.ConvertToDouble(parameters[0]),
Value.ConvertToDouble(parameters[1])
);
} else throw new Exception("Command has an incorrect number of parameters");
case "quadrilateral":
//Check parameters
if (parameters.Length == 8) {
return new Quadrilateral(drawer,
Value.ConvertToPoint(parameters[0], parameters[1]),
Value.ConvertToPoint(parameters[2], parameters[3]),
Value.ConvertToPoint(parameters[4], parameters[5]),
Value.ConvertToPoint(parameters[6], parameters[7])
);
} else throw new Exception("Command has an incorrect number of parameters");
case "rectangle":
//Check parameters
if (parameters.Length == 2) {
return new Advanced_Software_Engineering.Verbs.DrawingVerbs.Rectangle(drawer,
Value.ConvertToDouble(parameters[0]),
Value.ConvertToDouble(parameters[1])
);
} else if (parameters.Length == 8) {
return new Quadrilateral(drawer,
Value.ConvertToPoint(parameters[0], parameters[1]),
Value.ConvertToPoint(parameters[2], parameters[3]),
Value.ConvertToPoint(parameters[4], parameters[5]),
Value.ConvertToPoint(parameters[6], parameters[7])
);
} else if (parameters.Length == 4) {
return new Advanced_Software_Engineering.Verbs.DrawingVerbs.Rectangle(drawer,
Value.ConvertToPoint(parameters[0], parameters[1]),
Value.ConvertToPoint(parameters[2], parameters[3])
);
} else throw new Exception("Command has an incorrect number of parameters");
case "circle":
//Check parameters
if (parameters.Length == 1) {
return new
Circle(drawer,
Value.ConvertToDouble(parameters[0])
);
} else throw new Exception("Command has an incorrect number of parameters");
case "triangle":
//Check parameters
if (parameters.Length == 1) {
return new
Triangle(drawer,
Value.ConvertToDouble(parameters[0])
);
} else if (parameters.Length == 2) {
return new
Triangle(drawer,
Value.ConvertToDouble(parameters[0]),
Value.ConvertToDouble(parameters[1])
);
} else if (parameters.Length == 6) {
return new Triangle(drawer,
Value.ConvertToPoint(parameters[0], parameters[1]),
Value.ConvertToPoint(parameters[2], parameters[3]),
Value.ConvertToPoint(parameters[4], parameters[5])
);
} else throw new Exception("Command has an incorrect number of parameters");
case "dot":
if (parameters.Length == 0) {
return new Dot(drawer);
} else throw new Exception("Command doesn't take parameters");
case "clear":
if (parameters.Length == 0) {
return new Clear(drawer);
} else throw new Exception("Command doesn't take parameters");
case "reset":
if (parameters.Length == 0) {
return new ResetPen(drawer);
} else throw new Exception("Command doesn't take parameters");
case "fillon":
if (parameters.Length == 0) {
return new Fill(drawer, true);
} else throw new Exception("Command doesn't take parameters");
case "filloff":
if (parameters.Length == 0) {
return new Fill(drawer, false);
} else throw new Exception("Command doesn't take parameters");
case "pen":
if (parameters.Length == 1) {
return new PenColor(drawer, Value.TextToColor(parameters[0]));
} else if (parameters.Length == 3) {
return new PenColor(drawer,
Value.IntsToColor(
Value.ConvertToInt(parameters[0]),
Value.ConvertToInt(parameters[1]),
Value.ConvertToInt(parameters[2])
)
);
} else if (parameters.Length == 4) {
return new PenColor(drawer,
Value.IntsToColor(
Value.ConvertToInt(parameters[0]),
Value.ConvertToInt(parameters[1]),
Value.ConvertToInt(parameters[2]),
Value.ConvertToInt(parameters[3])
)
);
} else throw new Exception("Command has an incorrect number of parameters");
case "fill":
if (parameters.Length == 1) {
return new FillColor(drawer, Value.TextToColor(parameters[0]));
} else if (parameters.Length == 3) {
return new FillColor(drawer,
Value.IntsToColor(
Value.ConvertToInt(parameters[0]),
Value.ConvertToInt(parameters[1]),
Value.ConvertToInt(parameters[2])
)
);
} else if (parameters.Length == 4) {
return new FillColor(drawer,
Value.IntsToColor(
Value.ConvertToInt(parameters[0]),
Value.ConvertToInt(parameters[1]),
Value.ConvertToInt(parameters[2]),
Value.ConvertToInt(parameters[3])
)
);
} else throw new Exception("Command has an incorrect number of parameters");
default:
throw new Exception("Unknown command");
}
}
}
}