Code generator for Processing classes

class_generator.pde

/*
  Hi there!! You should probably not read this code for learning because it is not a good example
  in a variety of ways! It was written in a hurry. Also Processing/Java, while being
  great for many reasons, is a really terrible language to write code-that-generates-code in (IMHO).
  
  But! You should /run/ this code for learning. :)
  
  -Natalie Freed, Nov 2013
 */

import controlP5.*;

ControlP5 cp5;

String textValue = "";
String className = "";
Function function1;
int margin = 20;
int line = 2;

PFont font;

ArrayList<Attribute> attributes;
ArrayList<Function> functions;

void setup() {
  size(900, 700);

  font = createFont("Arial", 20);

  cp5 = new ControlP5(this);
  
  attributes = new ArrayList();
  functions = new ArrayList();
  
  attributes.add(new Attribute("", ""));
  attributes.get(0).addTextField(1, margin, 130, "numPages", "int");
  attributes.add(new Attribute("", ""));
  attributes.get(1).addTextField(2, margin, 320, "hasPictures", "boolean");
  
  function1 = new Function("","", new ArrayList());

  cp5.addTextfield("className")
    .setPosition(margin, 20)
      .setSize(200, 40)
        .setFont(font)
         .setValue("Book")
          .setLabel("Class Name (eg. Book, Bicycle, TextField)")
            .getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM_OUTSIDE).setFont(createFont("Arial", 16)).toUpperCase(false).setColor(0)

              ;   

  cp5.addTextfield("functionName")
    .setPosition(margin, 520)
      .setSize(200, 40)
        .setFont(font)
        .setValue("getText")
          .setLabel("Function Name (eg. turnPage, markPage, search)")
            .getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM_OUTSIDE).setFont(createFont("Arial", 16)).toUpperCase(false).setColor(0)
              ; 


  cp5.addTextfield("functionReturnType")
    .setPosition(margin, 590)
      .setSize(200, 40)
        .setFont(font)
        .setValue("String")
          .setLabel("Function Return Type (eg. void, int, float, boolean, String)")
            .getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM_OUTSIDE).setFont(createFont("Arial", 16)).toUpperCase(false).setColor(0)
              ; 

  textFont(font);
}

void draw() {
  background(100);
  fill(200);
  noStroke();
  line = 2;

  rect(width/2+5, 0, width/2, height);
  fill(0);
  className = cp5.get(Textfield.class, "className").getText();
  if (className.length() > 0)
  {
    className = Character.toUpperCase(className.charAt(0))+className.substring(1);
  }
  text("class " + className, width/2+margin, margin*line++);
  text("{", width/2+margin, margin*line++);
  
  attributes.get(0).name = cp5.get(Textfield.class, "attribute1Name").getText();
  attributes.get(0).dataType = cp5.get(Textfield.class, "attribute1DataType").getText();
  attributes.get(1).name = cp5.get(Textfield.class, "attribute2Name").getText();
  attributes.get(1).dataType = cp5.get(Textfield.class, "attribute2DataType").getText();
  
  text(attributes.get(0).toString() + ";", width/2+margin*2, margin*line++);
  text(attributes.get(1).toString() + ";", width/2+margin*2, margin*line++);
  line++;
  text(className + "(" + attributes.get(0).toString() + ", " + attributes.get(1).toString() + ")", width/2+margin*2, margin*line++);
  text("{", width/2+margin*2, margin*line++);
  
  text("this." + attributes.get(0).name + " = " + attributes.get(0).name + ";", width/2+margin*3, margin*line++);
  text("this." + attributes.get(1).name + " = " + attributes.get(1).name + ";", width/2+margin*3, margin*line++);

  
  text("}", width/2+margin*2, margin*line++);
  line++;
  
  function1.name = cp5.get(Textfield.class, "functionName").getText();
  function1.returnType = cp5.get(Textfield.class, "functionReturnType").getText();
  text(function1.toString(), width/2+margin*2, margin*line++);
  text("{", width/2+margin*2, margin*line++);
  text("//Code for " + function1.name + "-ing goes here", width/2+margin*3, margin*line++);
  text("}", width/2+margin*2, margin*line++);
  
  
  text("}", width/2+margin, margin*line++);
}

class Attribute
{
  String name;
  String dataType;

  Attribute(String name, String dataType)
  {
    this.name = name;
    this.dataType = dataType;
  }
  
  void addTextField(int number, int x, int y, String value, String dataType)
  {
    cp5.addTextfield("attribute" + number + "Name")
    .setPosition(x, y)
      .setSize(200, 40)
        .setFont(font)
          .setValue(value)
          .setLabel("Attribute " + number + " Name (eg. numPages, title, author)")
            .getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM_OUTSIDE).setFont(createFont("Arial", 16)).toUpperCase(false).setColor(0)
              ; 

  cp5.addTextfield("attribute" + number + "DataType")
    .setPosition(margin, y+70)
      .setSize(200, 40)
        .setFont(font)
        .setValue(dataType)
          .setLabel("Attribute " + number + " Data Type (eg. int, float, boolean, String, PVector)")
            .getCaptionLabel().align(ControlP5.LEFT, ControlP5.BOTTOM_OUTSIDE).setFont(createFont("Arial", 16)).toUpperCase(false).setColor(0)
              ; 
  }

  String toString()
  {
    String asString = dataType + " " + name;
    return asString;
  }
}

class Function
{
  String name;
  String returnType;
  ArrayList<Attribute> parameters;

  Function(String name, String returnType, ArrayList<Attribute> parameters)
  {
    this.name = name;
    this.returnType = returnType;
    this.parameters = parameters;
  }

  String toString()
  {
    String asString = returnType + " " + name + "(";
    if (parameters.size() > 0)
    {
      for (int i=0; i<parameters.size ()-1; i++)
      {
        asString += parameters.get(i) + ", ";
      }
      asString += parameters.get(parameters.size()-1) + ")"; //no comma for last one
    }
    else asString += ")";
//    asString += "\n{\n\n}";
    return asString;
  }
}