/*
 * Copyright (c) 2008, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.nativec.type;

import de.intarsys.nativec.api.INativeHandle;
import de.intarsys.nativec.api.NativeTools;

/**
 * A wrapper for a C wide (double byte) string.
 */
public class NativeWideString extends NativeObject {

	/** The meta class instance */
	public static final NativeWideStringType META = new NativeWideStringType();

	static {
		NativeType.register(NativeWideString.class, META);
	}

	static public NativeWideString createFromAddress(long address) {
		return (NativeWideString) NativeWideString.META
				.createNative(NativeTools.toHandle(address));
	}

	private int size = 0;
	private NativeWideStringType type;

	protected NativeWideString(NativeWideStringType pType) {
		type = pType;
		allocate();
	}

	protected NativeWideString(NativeWideStringType pType, INativeHandle handle) {
		super(handle);
		type = pType;
		if (type.hasByteCount()) {
			handle.setSize(type.getByteCount());
		}
	}

	protected NativeWideString(NativeWideStringType pType, String value) {
		type = pType;
		if (type.getStringSize() == 0) {
			size = value.length() + 1;
			size = size << 1;
		}
		allocate();
		setValue(value);
	}

	public NativeWideString(String value) {
		this(META, value);
	}

	@Override
	public int getByteCount() {
		if (type.hasByteCount()) {
			return type.getByteCount();
		}
		return size;
	}

	@Override
	public INativeType getNativeType() {
		return type;
	}

	public Object getValue() {
		return stringValue();
	}

	public void setValue(Object value) {
		setValue((String) value);
	}

	public void setValue(String value) {
		size = value.length() + 1;
		size = size << 1;
		handle.setWideString(0, value);
	}

	/**
	 * The java object corresponding to this.
	 * 
	 * @return The java object corresponding to this.
	 */
	public String stringValue() {
		return handle.getWideString(0);
	}
}
