zkoss/zk

/* Page.java

    Purpose:
        
    Description:
        
    History:
        Tue Sep  6 09:35:48     2005, Created by tomyeh

Copyright (C) 2005 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
    This program is distributed under LGPL Version 2.1 in the hope that
    it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.web.servlet.dsp.action;

import java.io.IOException;

import org.zkoss.web.mesg.MWeb;
import org.zkoss.web.servlet.dsp.DspException;

/**
 * The page action used to set the page info, such as the content type.
 *
 * @author tomyeh
 */
public class Page extends AbstractAction {
    private String _ctype, _octype;

    /** Returns the content type. */
    public String getContentType() {
        return _ctype;
    }

    /** Sets the content type. */
    public void setContentType(String ctype) {
        _ctype = ctype;
    }

    /** Sets the optional content type.
     * It is the content type generated automatically.
     * We will ignore it if the page is included.
     * @since 3.0.6
     */
    public void setOptionalContentType(String ctype) {
        _octype = ctype;
    }

    //-- Action --//
    public void render(ActionContext ac, boolean nested) throws DspException, IOException {
        if (!isEffective())
            return;
        if (nested)
            throw new DspException(MWeb.DSP_NESTED_ACTION_NOT_ALLOWED,
                    new Object[] { this, new Integer(ac.getLineNumber()) });
        if (_ctype != null)
            ac.setContentType(_ctype);
        else if (!ac.isIncluded() && _octype != null)
            ac.setContentType(_octype);
    }

    //-- Object --//
    public String toString() {
        return "page";
    }
}