textinfo.java

ZK 基础介绍 功能操作 模块 结合数据库操作

/* TextInfo.java

{{IS_NOTE
	Purpose:
		
	Description:
		
	History:
		Sat Sep  1 01:14:10     2007, Created by tomyeh
}}IS_NOTE

Copyright (C) 2007 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
	This program is distributed under GPL Version 2.0 in the hope that
	it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.zk.ui.metainfo;

import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.Page;
import org.zkoss.zk.xel.ExValue;
import org.zkoss.zk.xel.impl.EvaluatorRef;

/**
 * Represents a text.
 *
 * @author tomyeh
 * @since 3.0.0
 */
public class TextInfo extends EvalRefStub implements java.io.Serializable {
	private final ExValue _text;

	/**
	 * @param evalr the evaluator reference. It cannot be null.
	 * Retrieve it from {@link LanguageDefinition#getEvaluatorRef}
	 * or {@link PageDefinition#getEvaluatorRef}, depending which it
	 * belongs.
	 */
	public TextInfo(EvaluatorRef evalr, String text) {
		if (evalr == null) throw new IllegalArgumentException();
		_evalr = evalr;
		_text = text != null ? new ExValue(text, String.class): null;
	}

	/** Returns the raw value (text).
	 */
	public String getRawValue() {
		return _text.getRawValue();
	}

	/** Returns the value after evaluation.
	 */
	public String getValue(Page page) {
		return _text != null ? (String)_text.getValue(_evalr, page): null;
	}
	/** Returns the value after evaluation.
	 */
	public String getValue(Component comp) {
		return _text != null ? (String)_text.getValue(_evalr, comp): null;
	}
}