org.webical.web.components.ajax.YUIAjaxHandler.java Source code

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Here is the source code for org.webical.web.components.ajax.YUIAjaxHandler.java

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/*
 *    Webical - http://www.webical.org
 *    Copyright (C) 2007 Func. Internet Integration
 *
 *    This file is part of Webical.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.webical.web.components.ajax;

import org.apache.wicket.Application;
import org.apache.wicket.RequestCycle;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.ajax.AbstractDefaultAjaxBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.behavior.AbstractAjaxBehavior;
import org.apache.wicket.markup.html.IHeaderResponse;
import org.apache.wicket.settings.IDebugSettings;

/**
 * Default YUI AjaxHandler
 * @author ivo
 *
 */
public abstract class YUIAjaxHandler extends AbstractAjaxBehavior {

    /**  Borrowed from AbstractDefaultAjaxBehavior */

    /** reference to the default ajax support javascript file.*/
    private static final ResourceReference WICKET_JAVASCRIPT = new ResourceReference(
            AbstractDefaultAjaxBehavior.class, "wicket-ajax.js");

    /** reference to the default ajax debug support javascript file. */
    private static final ResourceReference WICKET_JAVASCRIPT_DEBUG_DRAG = new ResourceReference(
            AbstractDefaultAjaxBehavior.class, "wicket-ajax-debug-drag.js");

    /** reference to the default ajax debug support javascript file. */
    private static final ResourceReference WICKET_JAVASCRIPT_DEBUG = new ResourceReference(
            AbstractDefaultAjaxBehavior.class, "wicket-ajax-debug.js");

    /** YUI js references */
    private static final ResourceReference YUI_YAHOO_JS = new ResourceReference(YUIAjaxHandler.class,
            "yahoo/yahoo.js");
    private static final ResourceReference YUI_DOM_JS = new ResourceReference(YUIAjaxHandler.class, "dom/dom.js");
    private static final ResourceReference YUI_EVENT_JS = new ResourceReference(YUIAjaxHandler.class,
            "event/event.js");
    private static final ResourceReference YUI_DRAGDROP_JS = new ResourceReference(YUIAjaxHandler.class,
            "dragdrop/dragdrop.js");
    private static final ResourceReference YUI_ANIMATION_JS = new ResourceReference(YUIAjaxHandler.class,
            "animation/animation.js");
    private static final ResourceReference YUI_DDCONTAINER_JS = new ResourceReference(YUIAjaxHandler.class,
            "calendar/DDContainer.js");
    private static final ResourceReference YUI_DDPLAYER_JS = new ResourceReference(YUIAjaxHandler.class,
            "calendar/DDPlayer.js");
    private static final ResourceReference YUI_DDRESIZE_JS = new ResourceReference(YUIAjaxHandler.class,
            "calendar/DDResize.js");

    private String containerId;

    /**
     * Construct.
     * @param containerId the id of the container this handler is attached to (in wicket 2.0 this should be fixed)
     */
    public YUIAjaxHandler(String containerId) {
        this.containerId = containerId;
    }

    /* (non-Javadoc)
     * @see org.apache.wicket.behavior.AbstractAjaxBehavior#renderHead(org.apache.wicket.markup.html.IHeaderResponse)
     */
    @Override
    public void renderHead(IHeaderResponse response) {
        super.renderHead(response);
        response.renderJavascriptReference(YUI_YAHOO_JS);
        response.renderJavascriptReference(YUI_DOM_JS);
        response.renderJavascriptReference(YUI_EVENT_JS);
        response.renderJavascriptReference(YUI_DRAGDROP_JS);
        response.renderJavascriptReference(YUI_ANIMATION_JS);
        response.renderJavascriptReference(YUI_DDCONTAINER_JS);
        response.renderJavascriptReference(YUI_DDPLAYER_JS);
        response.renderJavascriptReference(YUI_DDRESIZE_JS);
        response.renderJavascriptReference(WICKET_JAVASCRIPT);

        //Enable debug?
        final IDebugSettings settings = Application.get().getDebugSettings();
        if (settings.isAjaxDebugModeEnabled()) {
            response.renderJavascript(
                    "\n<script type=\"text/javascript\" >" + "\n wicketAjaxDebugEnable=true; \n " + "</script>\n",
                    "debug scripts");
            response.renderJavascriptReference(WICKET_JAVASCRIPT_DEBUG_DRAG);
            response.renderJavascriptReference(WICKET_JAVASCRIPT_DEBUG);
        }
    }

    /**
     * Sets up the RequestTarget
     * @see wicket.behavior.IBehaviorListener#onRequest()
     */
    public void onRequest() {
        boolean isPageVersioned = true;
        try {
            isPageVersioned = getComponent().getPage().isVersioned();
            getComponent().getPage().setVersioned(false);

            //AjaxRequestTarget target = new AjaxRequestTarget();
            AjaxRequestTarget target = null;
            RequestCycle.get().setRequestTarget(target);

            respond(target);
        } finally {
            getComponent().getPage().setVersioned(isPageVersioned);
        }
    }

    /**
     * Implement to get onResponse notification
     * @param target
     */
    protected abstract void respond(AjaxRequestTarget target);

    //Getters/Setters

    /**
     * @return the containers MarkupId
     */
    public String getContainerId() {
        return containerId;
    }

    /**
     * @param containerId the containers MarkupId
     */
    public void setContainerId(String containerId) {
        this.containerId = containerId;
    }
}