DBUS Interface Definitions when Methods are in Different Module

[blueray453]

In case of gnome extension, Suppose i have an Interface Definitions (in simpleModule.js) like:

var SIMPLE_DBUS_IFACE = `
<node>
  <interface name="org.gnome.Shell.Extensions.Windows">

    <method name="SimpleMethod"/>
  </interface>
</node>`;

function SimpleMethod() {
    console.debug(`Running SimpleMethod`);
}

The SimpleMethod is in simpleModule.js. I have imported it in extension.js by:

const ExtensionUtils = imports.misc.extensionUtils;
const Me = ExtensionUtils.getCurrentExtension();
const simpleModule = Me.imports.simpleModule;

class Extension {
    enable() {
        console.debug(`enabling ${Me.metadata.name}`);
        this._dbus_windows = Gio.DBusExportedObject.wrapJSObject(simpleModule.SIMPLE_DBUS_IFACE, this);
        this._dbus_windows.export(Gio.DBus.session, '/org/gnome/Shell/Extensions/Windows');

    }
...

If SimpleMethod is in extension.js then the following command works.

dbus-send --print-reply=literal --session --dest=org.gnome.Shell /org/gnome/Shell/Extensions/Windows org.gnome.Shell.Extensions.Windows.SimpleMethod

But when the SimpleMethod is in simpleModule, the above command does not work.

Is there any way i can keep the SimpleMethod function in simpleModule.js instead of moving it to extension.js?

[blueray453]

If I add:

class Extension {

    SimpleMethod = simpleModule.SimpleMethod;

Then it works, but it is … not what I would like to have. In this case I have to modify two files when adding a function. I might forget later, then have to check both files.

[andyholmes]

The easiest solution is just to define a class in simpleModule with the methods and just pass that to Gio.DBusExportedObject.wrapJSObject() instead of the this object.

[blueray453]

Thank you very much. This works.