virtual-cli/processing3/virtualCommandline/virtualCommandline.pde

CommandLine commandLine;
void setup() {
  size (800, 420);
  commandLine = new CommandLine();
}
int pfc;
void draw() {
  background(0);
  fill(#FFFFFF);
  stroke(#FFFFFF);
  commandLine.update();
  commandLine.display();
}

class CommandLine {
  String userInput = "";
  String inputString;
  String[] presentedLines;
  String[] possibleCommands = { "asd" };
  int idleFrameCount;
  boolean busy;
  CommandLine() {
    presentedLines = new String[30];
    for (int i = 0; i < presentedLines.length; i++) {
      presentedLines[i] = "";
    }
  }
  void getUserInput(int code, char c) {
    println(code, c);
    if (!busy) {
      if (code != 8 &&  code != 10 && code != 16 && code != 17 && code != 18 && code != 20)
        userInput = userInput + c;
      if (code == 8 && userInput.length() > 0) { //backspace
        userInput = userInput.substring(0, userInput.length()-1);
      } else if (code == 10) { //enter
        enterInput();
        userInput = "";
      }
    }
  }
  void pushLineString(String bottomLine) {
    println("bottomline " + bottomLine);
    for (int i = presentedLines.length-1; i > 0; i--) {
      presentedLines[i] = presentedLines[i-1];
    }
    presentedLines[0] = bottomLine;
  }
  void enterInput() { //user Input DEFINE COMMANDS HERE THAT ARE DETECTED
    if (userInput.equals("asd")) {
      goOutside();
    } else {
      pushLineString(inputString);
    }
  }

  void update() {
    if (!busy) {
      inputString = "guest@iris ~ $ " + userInput;
      presentedLines[0] = inputString;
    } else {
      if (idleFrameCount + pfc < frameCount) {
        busy = false;
      }
    }
  }
  void display() {
    for (int i = 0; i < presentedLines.length; i++) {
      text(presentedLines[i], 13, height-25-(i*13));
    }
  }
}

void goOutside() {
  commandLine.busy = true;
  pfc = frameCount;
//  String[] stringList = {"Processing",};
  // l("processing user data...", 10);
//  pfc = frameCount;
//  pushLineString(input);
 // idleFrameCount += f;
}


void keyPressed() {
  //println(keyCode + " " + key);
  commandLine.getUserInput(keyCode, key);
}