CheckBox.java

package com.form.language.gui.widget;

import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.JCheckBox;

import com.form.language.ast.statement.question.Question;
import com.form.language.ast.values.BoolValue;
import com.form.language.ast.values.GenericValue;
import com.form.language.memory.Context;

public class CheckBox extends Widget {
	private JCheckBox checkbox;

	public CheckBox(Question question, Context context) {
		super(question, context);
		this.checkbox = new JCheckBox();

		this.checkbox.setName(question.getId());
		CheckBoxListener checkboxListener = new CheckBoxListener();
		this.checkbox.addItemListener((ItemListener) checkboxListener);
		setContextValue(new BoolValue());
	}

	public JCheckBox getCheckBox() {
		return checkbox;
	}

	private class CheckBoxListener implements ItemListener {
		public void itemStateChanged(ItemEvent e) {
			setContextValue(new BoolValue(checkbox.isSelected()));
			checkComputedQuestion();
			checkDependencyVisibility();
		}
	}

	@Override
	public void displayComputedValue(GenericValue value) {
		boolean computedValue = ((BoolValue) value).getValue();
		this.checkbox.setEnabled(false);
		this.checkbox.setSelected(computedValue);
	}
}