Add isDisposed checking to avoid unexpected NPE
authorTuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Wed, 30 Sep 2020 05:41:03 +0000 (08:41 +0300)
committerTuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Wed, 30 Sep 2020 05:42:10 +0000 (08:42 +0300)
commit215cb2930ed3fb362b2951d1da3080abec976972
tree7fa858cfa8e2fdfc777358af38aa42ba6bc24d11
parent86617be247efb3b904b3180d0569049aff232d75
Add isDisposed checking to avoid unexpected NPE

In this case ctx.getContentContext() would return null when the canvas
context was already disposed.

gitlab #614

(cherry picked from commit 930da66f9b2d7d1acba3e5dc805a323933abb780)
bundles/org.simantics.g2d/src/org/simantics/g2d/gallery/GalleryViewer.java