/**
 * Copyright (C) 2015 Valkyrie RCP
 *
 * 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.valkyriercp.form.builder;

import org.springframework.context.MessageSource;
import org.springframework.context.support.DefaultMessageSourceResolvable;
import org.valkyriercp.binding.form.FormModel;

import javax.swing.*;
import java.util.Locale;

/**
 * <code>FormComponentInterceptor</code> that allows customization on how a
 * CheckBox form property is rendered.
 * 
 * @see CheckBoxFormComponentInterceptorFactory for more details on
 *      configuration
 * 
 * @author Peter De Bruycker
 */
public class CheckBoxFormComponentInterceptor extends
		AbstractFormComponentInterceptor {

	private boolean showLabel = true;
	private boolean showText = false;

	private String textKey = "text";

	private MessageSource messageSource;

	public CheckBoxFormComponentInterceptor(FormModel formModel,
			MessageSource messageSource, boolean showLabel, boolean showText,
			String textKey) {
		super(formModel);
		this.messageSource = messageSource;
		this.showLabel = showLabel;
		this.showText = showText;
		this.textKey = textKey;
	}

	public void processComponent(String propertyName, JComponent component) {
		if (component instanceof JCheckBox) {
			if (showText) {
				JCheckBox checkBox = (JCheckBox) component;

				checkBox.setText(fetchExtraText(messageSource, propertyName));
			}
		}
	}

	protected String fetchExtraText(MessageSource messageSource,
			String propertyName) {
		return messageSource.getMessage(new DefaultMessageSourceResolvable(
				getExtraTextKeys(propertyName), propertyName + "." + textKey),
				Locale.getDefault());
	}

	/**
	 * Returns the keys used to fetch the extra text from the
	 * <code>MessageSource</code>.
	 * <p>
	 * The keys returned are
	 * <code><formModelId>.<propertyName>.<textKey>, <propertyName>.<textKey>, <textKey></code>
	 * <p>
	 * Can safely be overridden to add extra keys
	 * 
	 * @param propertyName
	 *            the property name
	 * @return the keys
	 */
	protected String[] getExtraTextKeys(String propertyName) {
		return new String[] {
				getFormModel().getId() + "." + propertyName + "." + textKey,
				propertyName + "." + textKey, textKey };
	}

	protected boolean isCheckBoxProperty(String propertyName) {
		Class type = getFormModel().getFieldMetadata(propertyName)
				.getPropertyType();

		return Boolean.TYPE.equals(type) || Boolean.class.equals(type);
	}

	public void processLabel(String propertyName, JComponent label) {
		if (!showLabel && isCheckBoxProperty(propertyName)) {
			((JLabel) label).setText("");
		}
	}
}