package net.sourceforge.fenixedu.domain.tests;

import net.sourceforge.fenixedu.domain.RootDomainObject;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;

public abstract class NewPresentationMaterial extends NewPresentationMaterial_Base implements Positionable {

    public NewPresentationMaterial() {
	super();

	setRootDomainObject(RootDomainObject.getInstance());
    }

    public NewPresentationMaterial(NewTestElement testElement, Boolean inline) {
	this();

	this.init(testElement, inline);
    }

    protected void init(NewTestElement testElement, Boolean inline) {
	this.setTestElement(testElement);
	this.setInline(inline);
	this.setPosition(this.getNewPosition());
    }

    private Integer getNewPosition() {
	return this.getTestElement().getPresentationMaterialsCount();
    }

    public void delete() {
	NewTestElement testElement = this.getTestElement();
	this.removeTestElement();

	testElement.resortPresentationMaterials();

	this.removeRootDomainObject();

	this.deleteDomainObject();
    }

    public boolean isFirst() {
	return this.getPosition() == 1;
    }

    public boolean isLast() {
	return this.getPosition() == this.getTestElement().getPresentationMaterialsCount();
    }

    public void switchPosition(Integer relativePosition) {
	int currentPosition = this.getPosition();
	int newPosition = currentPosition + relativePosition;
	NewTestElement testElement = this.getTestElement();

	if (relativePosition < 0 && this.isFirst()) {
	    throw new DomainException("could.not.sort.up");
	}

	if (relativePosition > 0 && this.isLast()) {
	    throw new DomainException("could.not.sort.down");
	}

	for (NewPresentationMaterial presentationMaterial : testElement.getPresentationMaterials()) {
	    if (presentationMaterial.getPosition() == newPosition) {
		presentationMaterial.setPosition(currentPosition);
		break;
	    }
	}

	this.setPosition(newPosition);
    }

    public abstract NewPresentationMaterialType getPresentationMaterialType();

    public abstract NewPresentationMaterial copy();

}