package com.worldturner.commons.wicket.panel;

import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.IModel;

/**
 * 
 * @author Erwin Bolwidt (ebolwidt@worldturner.com)
 * 
 * @param <T>
 *            The model object type.
 */
public class GenericPanel<T> extends Panel {

	private static final long serialVersionUID = 1L;

	public GenericPanel(String id, IModel<T> model) {
		super(id, model);
	}

	public GenericPanel(String id) {
		super(id);
	}

	/**
	 * Initialization method which will be invoked once, right before the first time the component is rendered. At this
	 * point, this Panel has been added to its parent container, and any model that should have been set, has been set.
	 * <p>
	 * This implementation does nothing. Override this method in your subclass.
	 */
	protected void initializeGui() {
	}

	/**
	 * Takes care of initialization at the first time that the component is rendered. If this method is overridden in a
	 * subclass, take care to invoke this method in your superclass.
	 */
	@Override
	protected void onBeforeRender() {
		if (!hasBeenRendered()) {
			initializeGui();
		}
		super.onBeforeRender();
	}

	/**
	 * Returns the default model object of this Panel, typed correctly according to the type parametrization.
	 * 
	 * @return
	 */
	public T getModelObject() {
		return getModel().getObject();
	}

	/**
	 * Returns the default model of this Panel, typed correctly according to the type parametrization.
	 * 
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public IModel<T> getModel() {
		return (IModel<T>) getDefaultModel();
	}

	/**
	 * Installs the default model of this Panel.
	 * 
	 * @param model
	 *            the model to install.
	 */
	public final void setModel(IModel<T> model) {
		setDefaultModel(model);
	}

	/**
	 * Sets model object in the default model of this Panel.
	 * 
	 * @param object
	 *            the model object to set.
	 */
	public final void setModelObject(T object) {
		setDefaultModelObject(object);
	}

}