org.jdal.swing.validation.BackgroundErrorProcessor.java Source code

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Here is the source code for org.jdal.swing.validation.BackgroundErrorProcessor.java

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/*
 * Copyright 2009-2011 the original author or authors.
 *
 * 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.jdal.swing.validation;

import java.awt.Color;
import java.util.HashMap;
import java.util.Map;

import javax.swing.JComponent;

import org.jdal.ui.Binder;
import org.jdal.ui.bind.PropertyBinder;
import org.jdal.ui.validation.ErrorProcessor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.validation.FieldError;

/**
 * ErrorProcessor that change background color of JComponent and add a tooltip with error message 
 * on binding errors.
 * 
 * @author Jose Luis Martin - (jlm@joseluismartin.info)
 * @since 1.1 
 * @see ErrorProcessor
 * @see org.jdal.swing.AbstractView
 */
public class BackgroundErrorProcessor implements ErrorProcessor {

    private Map<JComponent, Color> colorMap = new HashMap<JComponent, Color>();
    private Color errorColor = new Color(255, 130, 130);
    @Autowired
    private MessageSource messageSource;

    public void processError(Binder<?> binder, FieldError error) {
        if (binder instanceof PropertyBinder) {
            Object o = ((PropertyBinder) binder).getComponent();
            processError(o, error);
        }
    }

    /**
     * {@inheritDoc}
     */
    public void processError(Object control, FieldError error) {
        if (control instanceof JComponent) {
            JComponent c = (JComponent) control;
            colorMap.put(c, c.getBackground());
            ((JComponent) c).setBackground(errorColor);
            if (messageSource != null)
                c.setToolTipText(messageSource.getMessage(error, null));
        }
    }

    /**
     * {@inheritDoc}
     */
    public void reset() {
        for (JComponent c : colorMap.keySet()) {
            c.setBackground(colorMap.get(c));
            c.setToolTipText(null);
        }
        colorMap.clear();
    }

    /**
     * @return the errorColor
     */
    public Color getErrorColor() {
        return errorColor;
    }

    /**
     * @param errorColor the errorColor to set
     */
    public void setErrorColor(Color errorColor) {
        this.errorColor = errorColor;
    }

    /**
     * @return the messageSource
     */
    public MessageSource getMessageSource() {
        return messageSource;
    }

    /**
     * @param messageSource the messageSource to set
     */
    public void setMessageSource(MessageSource messageSource) {
        this.messageSource = messageSource;
    }
}