/*
 * Copyright 2005-2010 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.wamblee.wicket.jquery;

import org.apache.wicket.Component;

/**
 * JQueryUtilities to be used for creating JQuery javascript functions from java.
 * 
 * @author Erik Brakkee
 *
 */
public class JQueryUtils {
    
    /**
     * Creates a jQuery ready handler that invokes a given javascript function with the id of 
     * a component.  
     * @param aFunction Javascript function to invoke.
     * @param aComponent Component to invoke the id for. 
     * @return
     */
    public static String createReadyFunction(String aFunction, Component aComponent) {
        if ( !aComponent.getOutputMarkupId()) { 
            throw new IllegalStateException("The component " + aComponent + 
                " does not have its markup id set so this ready handler will not have any effect");
        }
        StringBuffer js = new StringBuffer(); 
        js.append("$(function(){");
        js.append("org.wamblee." + aFunction + "(\"#" + aComponent.getMarkupId() + "\");");
        js.append("});");
        String jsString = js.toString();
        return jsString;
    }
}