com.servoy.j2db.server.headlessclient.RedirectAjaxRequestTarget.java Source code

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Here is the source code for com.servoy.j2db.server.headlessclient.RedirectAjaxRequestTarget.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 com.servoy.j2db.server.headlessclient;

import org.apache.wicket.Application;
import org.apache.wicket.IRequestTarget;
import org.apache.wicket.Page;
import org.apache.wicket.RequestCycle;
import org.apache.wicket.protocol.http.WebResponse;

import com.servoy.j2db.server.headlessclient.MainPage.ShowUrlInfo;

/**
 * The empty AJAX request target does output an empty AJAX response.
 * 
 * @author Matej Knopp
 */
public final class RedirectAjaxRequestTarget implements IRequestTarget {
    /** immutable hashcode. */
    private static final int HASH = 17 * 1542323;
    private final Class<? extends Page> page;

    /** singleton instance. */
    /**
     * Construct.
     */
    public RedirectAjaxRequestTarget(Class<? extends Page> page) {
        this.page = page;
    }

    /**
     * @see org.apache.wicket.IRequestTarget#respond(org.apache.wicket.RequestCycle)
     */
    public void respond(RequestCycle requestCycle) {
        WebResponse response = (WebResponse) requestCycle.getResponse();
        final String encoding = Application.get().getRequestCycleSettings().getResponseRequestEncoding();

        // Set content type based on markup type for page
        response.setCharacterEncoding(encoding);
        response.setContentType("text/xml; charset=" + encoding);

        // Make sure it is not cached by a client
        response.setDateHeader("Expires", System.currentTimeMillis());
        response.setHeader("Cache-Control", "no-cache, must-revalidate");
        response.setHeader("Pragma", "no-cache");

        CharSequence urlFor = RequestCycle.get().urlFor(page, null);
        response.write("<?xml version=\"1.0\" encoding=\"");
        response.write(encoding);
        response.write("\"?><ajax-response>");
        response.write("<evaluate");
        response.write(">");
        response.write("<![CDATA[");
        response.write(
                MainPage.getShowUrlScript(new ShowUrlInfo(urlFor.toString(), "_self", null, 0, true, false, true)));
        response.write("]]>");
        response.write("</evaluate>");
        response.write("</ajax-response>");
    }

    /**
     * @see org.apache.wicket.IRequestTarget#detach(org.apache.wicket.RequestCycle)
     */
    public void detach(RequestCycle requestCycle) {
    }

    /**
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object obj) {
        if (obj instanceof RedirectAjaxRequestTarget) {
            return true;
        }
        return false;
    }

    /**
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
        return HASH;
    }

    /**
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return "RedirectAjaxRequestTarget";
    }
}