File.java

package name.graf.emanuel.testfileeditor.model.node;

import org.eclipse.jface.text.Position;

public class File implements Node {
	private final String name;
	private final Position pos;
	private final Position head;
	private final Test parent;
	private Expected exp;
	private Selection sel;

	public File(final String name, final Position pos, final Position head, final Test parent) {
		super();
		exp = null;
		sel = null;
		this.name = name;
		this.pos = pos;
		this.head = head;
		this.parent = parent;
	}

	@Override
	public Node[] getChildren() {
		final int i = howManyChildren();
		if (i > 0) {
			int index = 0;
			final Node[] children = new Node[i];
			if (sel != null) {
				children[index++] = sel;
			}
			if (exp != null) {
				children[index++] = exp;
			}
			return children;
		}
		return null;
	}

	@Override
	public Object getParent() {
		return parent;
	}

	@Override
	public Position getPosition() {
		return pos;
	}

	public Position getHeadPosition() {
		return head;
	}

	public boolean containsOffset(final int offset) {
		return pos.overlapsWith(offset, 1);
	}

	@Override
	public boolean hasChildren() {
		return howManyChildren() > 0;
	}

	@Override
	public String toString() {
		return name;
	}

	@Override
	public int hashCode() {
		final long namenHash = name.hashCode();
		return (int) namenHash + pos.offset;
	}

	@Override
	public boolean equals(final Object obj) {
		return hashCode() == obj.hashCode();
	}

	public void setExpected(final Expected node) {
		exp = node;
	}

	public void setSelection(final Selection node) {
		sel = node;
	}

	private int howManyChildren() {
		int length = 0;
		if (sel != null) {
			++length;
		}
		if (exp != null) {
			++length;
		}
		return length;
	}
}