GateKeyboardModifier.java

package com.cburch.logisim.std.gates;

import java.awt.event.KeyEvent;

import com.cburch.logisim.comp.Component;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.gui.main.Canvas;
import com.cburch.logisim.tools.SetAttributeAction;

public class GateKeyboardModifier {
	public static boolean TookKeyboardStrokes(int KeyCode,
			                                  Component comp,
			                                  AttributeSet attrs,
			                                  Canvas canvas,
			                                  SetAttributeAction act,
			                                  boolean CreateAction) {
		switch (KeyCode) {
		case KeyEvent.VK_N:
		case KeyEvent.VK_S:
			if (attrs.containsAttribute(GateAttributes.ATTR_SIZE)) {
				if (CreateAction)
					act.set(comp, GateAttributes.ATTR_SIZE, GateAttributes.SIZE_NARROW);
				else {
					attrs.setValue(GateAttributes.ATTR_SIZE, GateAttributes.SIZE_NARROW);
					canvas.repaint();
				}
			}
			return true;
		case KeyEvent.VK_M:
			if (attrs.containsAttribute(GateAttributes.ATTR_SIZE)) {
				if (CreateAction)
					act.set(comp, GateAttributes.ATTR_SIZE, GateAttributes.SIZE_MEDIUM);
				else {
					attrs.setValue(GateAttributes.ATTR_SIZE, GateAttributes.SIZE_MEDIUM);
					canvas.repaint();
				}
			}
			return true;
		case KeyEvent.VK_W:
			if (attrs.containsAttribute(GateAttributes.ATTR_SIZE)) {
				if (CreateAction)
					act.set(comp, GateAttributes.ATTR_SIZE, GateAttributes.SIZE_WIDE);
				else {
					attrs.setValue(GateAttributes.ATTR_SIZE, GateAttributes.SIZE_WIDE);
					canvas.repaint();
				}
			}
			return true;
		case KeyEvent.VK_EQUALS:
		case KeyEvent.VK_PLUS:
		case KeyEvent.VK_ADD:
			if (attrs.containsAttribute(GateAttributes.ATTR_INPUTS)) {
				int NrOfInputs = attrs.getValue(GateAttributes.ATTR_INPUTS);
				if (NrOfInputs < GateAttributes.MAX_INPUTS) {
					if (CreateAction)
						act.set(comp, GateAttributes.ATTR_INPUTS, NrOfInputs+1);
					else {
						attrs.setValue(GateAttributes.ATTR_INPUTS, NrOfInputs+1);
						canvas.repaint();
					}
				}
			}
			return true;
		case KeyEvent.VK_MINUS:
		case KeyEvent.VK_SUBTRACT:
			if (attrs.containsAttribute(GateAttributes.ATTR_INPUTS)) {
				int NrOfInputs = attrs.getValue(GateAttributes.ATTR_INPUTS);
				if (NrOfInputs > 2) {
					if (CreateAction)
						act.set(comp, GateAttributes.ATTR_INPUTS, NrOfInputs-1);
					else {
						attrs.setValue(GateAttributes.ATTR_INPUTS, NrOfInputs-1);
						canvas.repaint();
					}
				}
			}
			return true;
		default : return false;
		}
	}
}