Modified access a HTML (WebEngine) item

Hello

I'm working on a project where the aim is to save and user input of reading which has been entered in a webpage (a Web page). This means that if the user clicks a button, the types text in a textarea or text entry box, change a radio button selection, etc.. I'll save this entry for later playback in the order it was made.

I added listeners to all relevant controls as follows (Note This example uses a custom class, I created to identify the information of the item (HtmlElementInfo)):

if (element.getElementType() == HtmlElementInfo.ElementType.TEXTAREA) {
            //Input Change Listener
            EventListener inputListener = new EventListener() {
                @Override
                public void handleEvent(Event ev) {
                    elementValueChanged(ev.getTarget());
                }
            };

            ((EventTarget) n).addEventListener("input", inputListener, false);

        }

Then I get a call to elementValueChanged with the reference to the DOM element that was changed when, in this case, the user has typed in a TEXTAREA. The problem is that element.getTextContent () call returns the value of controls as it was during the loading of the page and does not take into account any user input.

Is it possible that I can access the current state of the element that triggered handleEvent? Is there a way I can access the javascript .value method that is available for document elements of in javascript? I'd rather not be JavaScript code injection in each single control so that it calls back to the main application with an update, that gets a little ugly. What is the point of being able to add a listener to changes of entry to an object, if I am not able to access relevant information on what has changed in this object?

Call node.setTextContent updates the text displayed in the WebEngine... so I don't see why I can't access the current displayed value.

Thank you!

I found a solution that satisfies me. If it is a bit embarrassing that getTextContent does not retrieve the current value (and), you can get the 'value' of the DOM node Member, because it's a JSObject.

With my interlocutor above and using this one method "elementValueChanged":

private void elementValueChanged(EventTarget et) {
  if (et instanceof JSObject) {
  JSObject jsNode = (JSObject)et;
  String currentValue = (String)jsNode.getMember("value");
  }
}

currentValue will have the same value as "document.getElementById("textarea").value" in JavaScript.

Tags: Java

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Modified access a HTML (WebEngine) item

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