MasterDetailLevel.java

/*
 * Copyright 2011 PrimeFaces Extensions.
 *
 * 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.
 *
 * $Id: MasterDetailLevel.java 496 2011-11-29 13:58:25Z Zoigln@googlemail.com $
 */

package org.primefaces.extensions.component.masterdetail;

import javax.el.ValueExpression;
import javax.faces.component.UIComponentBase;
import java.util.ArrayList;
import java.util.List;

/**
 * <code>MasterDetailLevel</code> component.
 *
 * @author  Oleg Varaksin / last modified by $Author: Zoigln@googlemail.com $
 * @version $Revision: 496 $
 */
public class MasterDetailLevel extends UIComponentBase {

	public static final String COMPONENT_FAMILY = "org.primefaces.extensions.component";
	private static final String DEFAULT_RENDERER = "org.primefaces.extensions.component.MasterDetailLevel";
	private static final String OPTIMIZED_PACKAGE = "org.primefaces.extensions.component.";

	/**
	 * Properties that are tracked by state saving.
	 *
	 * @author  Oleg Varaksin / last modified by $Author: Zoigln@googlemail.com $
	 * @version $Revision: 496 $
	 */
	protected enum PropertyKeys {

		level,
		contextVar,
		levelLabel,
		levelDisabled;

		private String toString;

		PropertyKeys(final String toString) {
			this.toString = toString;
		}

		PropertyKeys() {
		}

		@Override
		public String toString() {
			return ((this.toString != null) ? this.toString : super.toString());
		}
	}

	public MasterDetailLevel() {
		setRendererType(DEFAULT_RENDERER);
	}

	@Override
	public String getFamily() {
		return COMPONENT_FAMILY;
	}

	public int getLevel() {
		return (Integer) getStateHelper().eval(PropertyKeys.level, null);
	}

	public void setLevel(final int level) {
		setAttribute(PropertyKeys.level, level);
	}

	public String getContextVar() {
		return (String) getStateHelper().eval(PropertyKeys.contextVar, null);
	}

	public void setContextVar(final String contextVar) {
		setAttribute(PropertyKeys.contextVar, contextVar);
	}

	public String getLevelLabel() {
		return (String) getStateHelper().eval(PropertyKeys.levelLabel, null);
	}

	public void setLevelLabel(final String levelLabel) {
		setAttribute(PropertyKeys.levelLabel, levelLabel);
	}

	public boolean isLevelDisabled() {
		return (Boolean) getStateHelper().eval(PropertyKeys.levelDisabled, false);
	}

	public void setLevelDisabled(final boolean levelDisabled) {
		setAttribute(PropertyKeys.levelDisabled, levelDisabled);
	}

	public void setAttribute(final PropertyKeys property, final Object value) {
		getStateHelper().put(property, value);

		@SuppressWarnings("unchecked")
		List<String> setAttributes =
		    (List<String>) this.getAttributes().get("javax.faces.component.UIComponentBase.attributesThatAreSet");
		if (setAttributes == null) {
			final String cname = this.getClass().getName();
			if (cname != null && cname.startsWith(OPTIMIZED_PACKAGE)) {
				setAttributes = new ArrayList<String>(6);
				this.getAttributes().put(
						"javax.faces.component.UIComponentBase.attributesThatAreSet",
						setAttributes);
			}
		}

		if (setAttributes != null && value == null) {
			final String attributeName = property.toString();
			final ValueExpression ve = getValueExpression(attributeName);
			if (ve == null) {
				setAttributes.remove(attributeName);
			} else if (!setAttributes.contains(attributeName)) {
				setAttributes.add(attributeName);
			}
		}
	}
}