Examples of org.w3c.dom.events.EventListener

org.w3c.dom.events.EventListener
The EventListener interface is the primary method for handling events. Users implement the EventListener interface and register their listener on an EventTarget using the AddEventListener method. The users should also remove their EventListener from its EventTarget after they have completed using the listener. @since DOM Level 2

            Iterator i = eventListenerSet.iterator();
            while (i.hasNext()) {
                EventListenerMememto elm = (EventListenerMememto)i.next();
                NodeEventTarget et = elm.getTarget();
                if (et == evtTarget) {
                    EventListener el = elm.getListener();
                    boolean       uc = elm.getUseCapture();
                    String        t  = elm.getEventType();
                    boolean       n  = elm.getNamespaced();
                    if (et == null || el == null || t == null) {
                        continue;

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            // remove all listeners added by Bridges
            Iterator iter = eventListenerSet.iterator();
            while (iter.hasNext()) {
                EventListenerMememto m = (EventListenerMememto)iter.next();
                NodeEventTarget et = m.getTarget();
                EventListener   el = m.getListener();
                boolean         uc = m.getUseCapture();
                String          t  = m.getEventType();
                boolean         n  = m.getNamespaced();
                if (et == null || el == null || t == null) {
                    continue;

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            NodeEventTarget root
                = (NodeEventTarget) e.getSVGDocument().getRootElement();
            root.addEventListenerNS
                (XMLConstants.XML_EVENTS_NAMESPACE_URI,
                 SVGConstants.SVG_SVGZOOM_EVENT_TYPE,
                 new EventListener() {
                     public void handleEvent(Event evt) {
                         if (!(evt.getTarget() instanceof SVGSVGElement))
                             return;
                         // assert(evt.getType() ==
                         //        SVGConstants.SVG_SVGZOOM_EVENT_TYPE);

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        super.buildGraphicsNode(ctx, e, node);


        if (ctx.isInteractive()) {
            EventTarget target = (EventTarget)e;
            EventListener l = new AnchorListener(ctx.getUserAgent());
            target.addEventListener(SVG_EVENT_CLICK, l, false);
            ctx.storeEventListener(target, SVG_EVENT_CLICK, l, false);


            l = new CursorMouseOverListener(ctx.getUserAgent());
            target.addEventListener(SVG_EVENT_MOUSEOVER, l, false);

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        super.buildGraphicsNode(ctx, e, node);


        if (ctx.isInteractive()) {
            EventTarget target = (EventTarget)e;
            EventListener l = new CursorMouseOverListener(ctx);
            target.addEventListener(SVG_EVENT_MOUSEOVER, l, false);
            ctx.storeEventListener(target, SVG_EVENT_MOUSEOVER, l, false);
        }
    }

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        super.buildGraphicsNode(ctx, e, node);


        if (ctx.isInteractive()) {
            NodeEventTarget target = (NodeEventTarget)e;
            EventListener l = new CursorMouseOverListener(ctx);
            target.addEventListenerNS
                (XMLConstants.XML_EVENTS_NAMESPACE_URI, SVG_EVENT_MOUSEOVER,
                 l, false, null);
            ctx.storeEventListenerNS
                (target, XMLConstants.XML_EVENTS_NAMESPACE_URI, SVG_EVENT_MOUSEOVER,

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                        asb.append(s, m);
                    }
                } else if (ln.equals(SVG_A_TAG)) {
                    EventTarget target = (EventTarget)nodeElement;
                    UserAgent ua = ctx.getUserAgent();
                    EventListener l = new SVGAElementBridge.AnchorListener(ua);
                    target.addEventListener(SVG_EVENT_CLICK, l, false);
                    ctx.storeEventListener(target, SVG_EVENT_CLICK, l, false);
                    
                    fillAttributedStringBuffer(ctx,
                                               nodeElement,

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        public Object call(Context ctx, Scriptable scope,
                           Scriptable thisObj, Object[] args)
            throws JavaScriptException {
            NativeJavaObject  njo = (NativeJavaObject)thisObj;
            if (args[1] instanceof Function) {
                EventListener evtListener = new FunctionEventListener
                    ((Function)args[1],
                     ((RhinoInterpreter.ExtendedContext)ctx).getInterpreter());
                listenerMap.put(args[1], new SoftReference(evtListener));
                // we need to marshall args
                Class[] paramTypes = { String.class, Function.class,
                                       Boolean.TYPE };
                for (int i = 0; i < args.length; i++)
                    args[i] = Context.toType(args[i], paramTypes[i]);
                ((EventTarget)njo.unwrap()).addEventListener
                    ((String)args[0], evtListener,
                     ((Boolean)args[2]).booleanValue());
                return Undefined.instance;
            }
            if (args[1] instanceof NativeObject) {
                EventListener evtListener =
                    new HandleEventListener((Scriptable)args[1],
                                            ((RhinoInterpreter.ExtendedContext)
                                             ctx).getInterpreter());
                listenerMap.put(args[1], new SoftReference(evtListener));
                // we need to marshall args

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            NativeJavaObject  njo = (NativeJavaObject)thisObj;
            if (args[1] instanceof Function) {
                SoftReference sr = (SoftReference)listenerMap.get(args[1]);
                if (sr == null)
                    return Undefined.instance;
                EventListener el = (EventListener)sr.get();
                if (el == null)
                    return Undefined.instance;
                // we need to marshall args
                Class[] paramTypes = { String.class, Function.class,
                                       Boolean.TYPE };
                for (int i = 0; i < args.length; i++)
                    args[i] = Context.toType(args[i], paramTypes[i]);
                ((EventTarget)njo.unwrap()).removeEventListener
                    ((String)args[0], el, ((Boolean)args[2]).booleanValue());
                return Undefined.instance;
            }
            if (args[1] instanceof NativeObject) {
                SoftReference sr = (SoftReference)listenerMap.get(args[1]);
                if (sr == null)
                    return Undefined.instance;
                EventListener el = (EventListener)sr.get();
                if (el == null)
                    return Undefined.instance;
                // we need to marshall args
                Class[] paramTypes = { String.class, Scriptable.class,
                                       Boolean.TYPE };

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            (EVENT_SCRIPT_DESCRIPTION,
             new Object [] {d.getURL(),
                            SVGConstants.SVG_ONLOAD_ATTRIBUTE, 
                            new Integer(line)});


        EventListener l = new EventListener() {
                public void handleEvent(Event evt) {
                    try {
                        interp.bindObject(EVENT_NAME, evt);
                        interp.bindObject(ALTERNATE_EVENT_NAME, evt);
                        interp.evaluate(new StringReader(s), desc);

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