org.apache.wicket.request.mapper.info.PageComponentInfo.java Source code

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Here is the source code for org.apache.wicket.request.mapper.info.PageComponentInfo.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.wicket.request.mapper.info;

import org.apache.wicket.util.lang.Args;
import org.apache.wicket.util.string.Strings;

/**
 * Encapsulates both page and component info. Rendered in form of
 * <pageInfo&gt-<componentInfo>
 * 
 * @author Matej Knopp
 */
public class PageComponentInfo {
    private static final char SEPARATOR = '-';

    private final PageInfo pageInfo;

    private final ComponentInfo componentInfo;

    /**
     * Construct.
     * 
     * @param pageInfo
     * @param componentInfo
     */
    public PageComponentInfo(final PageInfo pageInfo, final ComponentInfo componentInfo) {
        Args.notNull(pageInfo, "pageInfo");

        this.pageInfo = pageInfo;
        this.componentInfo = componentInfo;
    }

    /**
     * @return page info instance
     */
    public PageInfo getPageInfo() {
        return pageInfo;
    }

    /**
     * @return component info instance or <code>null</code>
     */
    public ComponentInfo getComponentInfo() {
        return componentInfo;
    }

    /**
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        StringBuilder result = new StringBuilder();
        if (pageInfo != null) {
            result.append(pageInfo.toString());
        }
        if (componentInfo != null) {
            result.append(SEPARATOR);
            result.append(componentInfo);
        }

        return result.toString();
    }

    /**
     * Parses the given string
     * 
     * @param s
     * @return {@link PageComponentInfo} or <code>null</code> if the string is not in valid format.
     */
    public static PageComponentInfo parse(final String s) {
        if (Strings.isEmpty(s)) {
            return null;
        }

        final PageInfo pageInfo;
        final ComponentInfo componentInfo;

        int i = s.indexOf(SEPARATOR);
        if (i == -1)

        {
            pageInfo = PageInfo.parse(s);
            componentInfo = null;
        } else {
            pageInfo = PageInfo.parse(s.substring(0, i));
            componentInfo = ComponentInfo.parse(s.substring(i + 1));
        }

        if (pageInfo == null) {
            return null;
        }

        return new PageComponentInfo(pageInfo, componentInfo);
    }
}