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BrowserFunctions and evaluate from different Browser(s) [message #1697223]

Tue, 02 June 2015 13:56

Andrea Antonello

Messages: 6
Registered: June 2015

Junior Member

Hello,
I have a problem with browserfunctions and evaluates from different Browser instances and was wondering which is the proper way to handle this usecase.

I have 2 Browser instances, one use to show a map (through leaflet) and one to show a chart (through d3).
When I click inside the map, a BrowserFunction of the mapBrowser is called to get some data from the RAP side to display them both the mapBrowser and in the chartBrowser.

The mapBrowser gets the data as return of the function, while for the chart panel I am using the evaluate method on its browser, before the return of the BrowserFunction.

This doesn't seem to work, I assume (the evaluate method states this in the javadoc) because scripts are executed while previous ones didn't finish.

Can anyone please give me a hint about the proper way to do this?
Thanks a lot.

Andrea

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Re: BrowserFunctions and evaluate from different Browser(s) [message #1699556 is a reply to message #1697223]

Thu, 25 June 2015 06:20

Andrea Antonello

Messages: 6
Registered: June 2015

Junior Member

Before changing to have half of my gui to be a single frame made of html instead of SWT widgets, I want to ask a further question.

I assume there is a reason for not being able to listen to the completing of scripts in a browser, but being no web developer I ignore it.

So I wanted to ask how terrible it is to "listen" manually in a dirty way to when a browser's script is done, which seems to be checked on the internal variable executeScript to be null.

So a dirty trick would be access it through reflection and check for when it is done. Something like:

        
Field f = browser.getClass().getDeclaredField("executeScript"); 
f.setAccessible(true);
Object exeScript = null; // IllegalAccessException
while( exeScript != null ) {
     exeScript = f.get(browser);
}

I tried and it works, but am not sure under which conditions it might explode.

Andrea

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