Package org.itsnat.feashow.features.core.listeners

Source Code of org.itsnat.feashow.features.core.listeners.UserEventListenerTreeNode

/*
* This file is not part of the ItsNat framework.
*
* Original source code use and closed source derivatives are authorized
* to third parties with no restriction or fee.
* The original source code is owned by the author.
*
* This program is distributed AS IS 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.
*
* (C) Innowhere Software a service of Jose Maria Arranz Santamaria, Spanish citizen.
*/

package org.itsnat.feashow.features.core.listeners;

import org.itsnat.core.ItsNatDocument;
import org.itsnat.core.event.ItsNatUserEvent;
import org.itsnat.feashow.FeatureTreeNode;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.events.Event;
import org.w3c.dom.events.EventListener;
import org.w3c.dom.events.EventTarget;

public class UserEventListenerTreeNode extends FeatureTreeNode implements EventListener
{
    protected Element linkToStart;

    public UserEventListenerTreeNode()
    {
    }

    public void startExamplePanel()
    {
        ItsNatDocument itsNatDoc = getItsNatDocument();
        Document doc = itsNatDoc.getDocument();

        this.linkToStart = doc.getElementById("linkToStartId");

        itsNatDoc.addUserEventListener((EventTarget)linkToStart,"myUserAction",this);

        String code = "var itsNatDoc = document.getItsNatDoc();" +
                      "var evt = itsNatDoc.createUserEvent('myUserAction');" +
                      "evt.setExtraParam('title',document.title);" +
                      "evt.setExtraParam('url',document.location);" +
                      "evt.setExtraParam('both',[document.title,document.location]);" +               
                      "itsNatDoc.dispatchUserEvent(this,evt);";
        linkToStart.setAttribute("onclick",code);
    }

    public void endExamplePanel()
    {
        ItsNatDocument itsNatDoc = getItsNatDocument();

        itsNatDoc.removeUserEventListener((EventTarget)linkToStart,"myUserAction",this);

        this.linkToStart = null;
    }

    public void handleEvent(Event evt)
    {
        ItsNatUserEvent userEvt = (ItsNatUserEvent)evt;
        String title = (String)userEvt.getExtraParam("title");
        log("Page title: " + title);
        String url = (String)userEvt.getExtraParam("url");
        log("URL: " + url);
        Object[] both = userEvt.getExtraParamMultiple("both");
        log("Page title/URL: " + both[0] + "/" + both[1]);       
    }
}
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