/* ======================================================================
   Parts Copyright 2006 University of Leeds, Oxford University, University of the Highlands and Islands.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

====================================================================== */
package org.bodington.spring.easyedit;

import java.util.Iterator;
import java.util.List;

import org.bodington.util.html.HtmlFilterFactory;
import org.bodington.util.html.nodevisitors.ReportingVisitor;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;

public class TextValidator implements Validator
{

    public boolean supports(Class clazz)
    {
        return TextCommand.class.isAssignableFrom(clazz);
    }

    public void validate(Object command, Errors errors)
    {
        TextCommand editCommand = (TextCommand)command;
        ReportingVisitor report = HtmlFilterFactory.filter(HtmlFilterFactory.getParser(editCommand
            .getText()), HtmlFilterFactory.BODY);
        List messages = report.getMessages();
        for (Iterator it = messages.iterator(); it.hasNext();)
        {
            errors.rejectValue("text", "html.invalid", new Object[]{it.next()}, "Invalid HTML - {0}");
        }    

    }

}