/*=============================================================================#
 # Copyright (c) 2013, 2021 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.ecommons.waltable.layer.cell;

import org.eclipse.statet.ecommons.waltable.coordinate.Orientation;


public class LayerCellDim implements ILayerCellDim {
	
	
	private final Orientation orientation;
	
	private final long id;
	
	private final long position;
	
	private final long originPosition;
	private final long positionSpan;
	
	
	public LayerCellDim(final Orientation orientation, final long id,
			final long position) {
		this(orientation, id, position, position, 1);
	}
	
	public LayerCellDim(final Orientation orientation, final long id,
			final long position, final long originPosition, final long positionSpan) {
		if (orientation == null) {
			throw new NullPointerException("orientation"); //$NON-NLS-1$
		}
		if (positionSpan < 0 || position < originPosition || position >= originPosition + positionSpan) {
			throw new IllegalArgumentException("position: " + position + " [" + originPosition + ", " + (originPosition + positionSpan) + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
		}
		this.orientation= orientation;
		this.id= id;
		this.position= position;
		this.originPosition= originPosition;
		this.positionSpan= positionSpan;
	}
	
	
	@Override
	public final Orientation getOrientation() {
		return this.orientation;
	}
	
	@Override
	public final long getId() {
		return this.id;
	}
	
	@Override
	public final long getPosition() {
		return this.position;
	}
	
	@Override
	public final long getOriginPosition() {
		return this.originPosition;
	}
	
	@Override
	public final long getPositionSpan() {
		return this.positionSpan;
	}
	
	
	@Override
	public final int hashCode() {
		int h= (int) (this.originPosition ^ (this.originPosition >>> 32));
		if (this.orientation == Orientation.VERTICAL) {
			h= 17 + Integer.rotateRight(h, 15);
		}
		return h ^ (h >>> 7);
	}
	
	@Override
	public final boolean equals(final Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj instanceof LayerCellDim) {
			final LayerCellDim other= (LayerCellDim) obj;
			return (this.orientation == other.orientation
					&& this.originPosition == other.originPosition
					&& this.positionSpan == other.positionSpan);
		}
		return false;
	}
	
	
	@Override
	public String toString() {
		final StringBuilder sb= new StringBuilder();
		sb.append("id= ").append(this.id); //$NON-NLS-1$
		sb.append(", ").append("position: ").append(this.position); //$NON-NLS-1$ //$NON-NLS-2$
		sb.append(" [").append(this.originPosition).append(", ").append(this.originPosition + this.positionSpan).append("]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
		return sb.toString();
	}
	
}