/*

 * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:

 *

 * Float parameter

 *

 */

package com.nokia.trace.dictionary.model.decodeparameters;

import java.nio.ByteBuffer;

import java.util.List;

/**

 * Float parameter

 */

public final class FloatParameter extends DecodeParameter {

	/**

	 * Size of the float

	 */

	private int size;

	/**

	 * Signed or not

	 */

	private boolean signed;

	/**

	 * Constructor

	 * 

	 * @param type

	 *            type

	 * @param hidden

	 *            hidden

	 * @param size

	 *            size

	 * @param signed

	 *            signed

	 */

	public FloatParameter(String type, boolean hidden, int size, boolean signed) {

		super(type, hidden);

		this.size = size;

		this.signed = signed;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * com.nokia.trace.dictionary.model.decodeparameters.DecodeParameter#decode

	 * (java.nio.ByteBuffer, int, java.lang.StringBuffer, int, int,

	 * java.util.ArrayList)

	 */

	@Override

	public int decode(ByteBuffer dataFrame, int offset,

			StringBuffer traceString, int dataStart, int dataLength,

			List<String> parameterList) {

		// Check that there is enough data left in the buffer

		int bytesRemaining = dataLength - (offset - dataStart);

		if (bytesRemaining < size) {

			postDataMissingEvent(traceString, bytesRemaining, size);

		} else {

			long data = 0;

			if (size == TWO_BYTES) {

				data = DecodeUtils.getLongFromBuffer(dataFrame, offset,

						TWO_BYTES);

				double floatData = Double.longBitsToDouble(data);

				String floatStr = Double.toString(floatData);

				traceString.append(floatStr);

				parameterList.add(floatStr);

			} else if (size == FOUR_BYTES) {

				data = DecodeUtils.getLongFromBuffer(dataFrame, offset,

						FOUR_BYTES);

				double floatData = Double.longBitsToDouble(data);

				String floatStr = Double.toString(floatData);

				traceString.append(floatStr);

				parameterList.add(floatStr);

			} else if (size == EIGHT_BYTES) {

				data = DecodeUtils.getLongFromBuffer(dataFrame, offset,

						EIGHT_BYTES);

				double floatData = Double.longBitsToDouble(data);

				String floatStr = Double.toString(floatData);

				traceString.append(floatStr);

				parameterList.add(floatStr);

			}

		}

		offset = offset + size;

		return offset;

	}

	/**

	 * Gets the signed value

	 * 

	 * @return the signed

	 */

	public boolean isSigned() {

		return signed;

	}

	/**

	 * Sets the signed value

	 * 

	 * @param signed

	 *            the signed to set

	 */

	public void setSigned(boolean signed) {

		this.signed = signed;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * com.nokia.trace.dictionary.model.decodeparameters.DecodeParameter#getSize

	 * ()

	 */

	@Override

	public int getSize() {

		return size;

	}

	/**

	 * Sets size

	 * 

	 * @param size

	 *            the size to set

	 */

	public void setSize(int size) {

		this.size = size;

	}

}