Accessing MarvinSketch events in a web application

Hi,





Is there a simple way to access he MarvinSketch applet's events from a web application? I am particularly interested in onChange event.





Cheers, Péter

MarvinSketch applet can invoke JavaScript method by property change event, just switch on notification (set "listenpropertychange" parameter to "true"). Please see its documentation for more details.


http://www.chemaxon.com/marvin/help/developer/sketchman.html#parameters.listenpropertychange

Hi Tamás,





I tried to use the modified code example but it does nothing for me:








function propertyChange(prop) {


if (prop == "mol")


{


document.getElementById("submit").disabled=false;


}


}


.


.


.


.





msketch_name = "MSketch";


msketch_mayscript=true;


msketch_begin("../marvin", 400, 400);


msketch_param("preload", "MolExport,GraphInvariants,Parity");


//msketch_param("detach", "hide,size=440x440");


msketch_param("listenpropertychange","true");


msketch_param("undetachByX", "false");


msketch_param("menubar", "true");


msketch_param("background", "");








Péter

Please see the following example: Listen PropertyChangeEvents in applet


In your code, the condition is wrong. prop == "mol" condition will never be true. The value of the prop object follows this syntax:

Code:

<propertyname>=<propertyvalue>

Is this working in older Marvin versions (4.1.13), or just in Marvin 5.0? I tried to set your example locally with version 4.1.13 with no success.

No, it is a new feature that is available since 5.0.

If you use an older Marvin version, I can recommend you to use the molLoaderFinishedEvent applet parameter. You can not listen all changes on the molecule with this solution. But it can help you to control the loading of a new molecule into the applet (invoked when molecule loading process is completed).

Can I set a MarvinSketch display parameter from a JavaScript function? I want to turn atomNumbersVisible on or off depending on what a user selects from a pulldown menu. I am using Marvin 4.1.13.

No, there is no way to control the mentioned display property from JavaScript.


But we will investigate how to improve controlling display options of the MarvinSketch applet from JavaScript.

Tamas wrote:

No, there is no way to control the mentioned display property from JavaScript.

Bummer.

Tamas wrote:

But we will investigate how to improve controlling display options of the MarvinSketch applet from JavaScript.

Thanks. It would be helpful for integrating Marvin into Web apps with other kinds of functionality.