tapestry/tapestry-framework/src/java/org/apache/tapestry/valid/FieldTracking.java

// Copyright 2004, 2005 The Apache Software Foundation
//
// 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.apache.tapestry.valid;

import java.io.Serializable;

import org.apache.hivemind.util.Defense;
import org.apache.tapestry.IRender;
import org.apache.tapestry.form.IFormComponent;

/**
 * Default implementation of {@link IFieldTracking}.
 * 
 * @author Howard Lewis Ship
 * @since 1.0.8
 */

public class FieldTracking implements IFieldTracking, Serializable
{

    private static final long serialVersionUID = -5397563163968532716L;

    private transient IFormComponent _component;

    private String _input;

    private IRender _renderer;

    private String _fieldName;

    private ValidationConstraint _constraint;

    /**
     * Constructor used for unassociated errors; errors that are not about any
     * particular field within the form.
     */

    FieldTracking()
    {
    }

    /**
     * Standard constructor for a field (with the given name), rendered by the
     * specified component.
     */

    FieldTracking(String fieldName, IFormComponent component)
    {
        Defense.notNull(fieldName, "fieldName");
        Defense.notNull(component, "component");

        _fieldName = fieldName;
        _component = component;
    }

    public IFormComponent getComponent()
    {
        return _component;
    }

    public IRender getErrorRenderer()
    {
        return _renderer;
    }

    public void setErrorRenderer(IRender value)
    {
        _renderer = value;
    }

    public String getInput()
    {
        return _input;
    }

    public void setInput(String value)
    {
        _input = value;
    }

    public String getFieldName()
    {
        return _fieldName;
    }

    public ValidationConstraint getConstraint()
    {
        return _constraint;
    }

    public void setConstraint(ValidationConstraint constraint)
    {
        _constraint = constraint;
    }

    /** @since 3.0 * */

    public boolean isInError()
    {
        return _renderer != null;
    }

}