Re: Problems using native JavaScript library (Snap)

When I use $wnd.Snap, I get:

Object [object global] has no method 'Snap'

And the first library (SVGJS) works without $wnd. 

I inject like this:

  LibraryBundle b = GWT.create (LibraryBundle.class);

  ScriptInjector.fromString (b.svgLib().getText()).inject();

If you use $wnd you MUST inject into the top level window, so you have to change your injection as well by calling setWindow(ScriptInjector.TOP_WINDOW).

 

   When injecting your script, make sure you inject it into the top window (setWindow(ScriptInjector.TOP_WINDOW)), then reference your globals within $wnd.

How exactly would you modify the injection code above?

Ehh...by calling setWindow() as already mentioned?

 

(How does setWindow influence where the code gets injected?)

By default ScriptInjector uses the JS object "window" to inject your code. When inside an iframe "window" points to the iframe window, so code gets injected into the iframe. When you tell ScriptInjector to inject into the top window it will use GWT's special JS variable "$wnd" which always points to the top level window.

 

 I suppose your errors come from using nodes cross-document (the container in the top window, the SVG in the hidden iframe that sandboxes the GWT compiled code)

How can I verify (with Chrome inspector) where the code gets injected?

ScriptInjector removes the <script> tag it has injected automatically to keep the DOM smaller. To see the <script> tag you need to call setRemoveTag(false). Then take a look at the <script> tags of the top level document or GWT's iframe (the one having an id assigned matching your module name).

-- J.

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