/*
 * Copyright (c) 2002-2003 by OpenSymphony
 * All rights reserved.
 */
package com.opensymphony.webwork.views.jsp;

import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.TextProviderSupport;
import com.opensymphony.xwork.LocaleProvider;
import com.opensymphony.xwork.util.LocalizedTextUtil;

import org.apache.commons.logging.*;

import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.jsp.JspException;


/**
 * Gets a resource bundle and place it on the value stack. This allows
 * the text tag to access messages from any bundle, and not just the bundle
 * associated with the current action.
 *
 * @author Rickard Öberg (rickard@dreambean.com)
 * @version $Revision: 1.3 $
 */
public class I18nTag extends WebWorkTagSupport {
    //~ Instance fields ////////////////////////////////////////////////////////

    // Attributes ----------------------------------------------------
    protected String nameAttr;

    //~ Methods ////////////////////////////////////////////////////////////////

    // Public --------------------------------------------------------
    public void setName(String aName) {
        nameAttr = aName;
    }

    public int doEndTag() throws JspException {
        getStack().pop();

        return EVAL_PAGE;
    }

    // BodyTag implementation ----------------------------------------
    public int doStartTag() throws JspException {
        // Get bundle
    	
    	// >>
    	ResourceBundle bundle = null;
    	try {
        	String name = this.findString(nameAttr);
            bundle = (ResourceBundle) findValue("texts('" + name + "')");

            if (bundle == null) {
                bundle = LocalizedTextUtil.findResourceBundle(name, (Locale) getStack().getContext().get(ActionContext.LOCALE));
            }
            
        } catch (Exception e) {
        	// ignore it
        }

        if (bundle == null) {
        	try {
        		String name = nameAttr;
        		bundle = (ResourceBundle) findValue("texts('" + name + "')");

        		if (bundle == null) {
        			bundle = LocalizedTextUtil.findResourceBundle(name, (Locale) getStack().getContext().get(ActionContext.LOCALE));
        		}
        	} catch (Exception e) {
        		LogFactory.getLog(getClass()).error("Could not find the bundle " + nameAttr, e);
        		throw new JspException("Could not find the bundle " + nameAttr);
        	}
        }
            
        if (bundle != null) {
            final Locale locale = (Locale) getStack().getContext().get(ActionContext.LOCALE);
            getStack().push(new TextProviderSupport(bundle, new LocaleProvider() {
                public Locale getLocale() {
                    return locale;
                }
            }));
        }
        // <<
        return EVAL_BODY_INCLUDE;
    }
}