[platform-dev] SWT naive question: why "checkWidget()" everywhere?

[Mickael Istria <mistria@xxxxxxxxxx>]

Hi all,

I'm currently working on the topic of moving work out of UI Thread, using JDT as main target (bug 538656).

In my investigations, I've hit the case of calling `StyledText.getBlockSelection()` sending a InvalidThreadAccess because first line of the method is `checkWidget()`.

However, this method is mostly a boolean accessor, the state of block selection or not is purely inside the Java logic, no JNI. Invoking this method from a thread is definitely a harmless operation

So I'm wondering: why is SWT putting so much `checkWidget()` even on simple accessors? Is this something we could get rid of?

Thanks in advance for your insights.

--

Mickael Istria

Eclipse IDE developer, for Red Hat Developers