fix onSave when more than 1 pane already opened

mjmlio / atom-mjml-preview

MJML preview in Atom

https://atom.io/packages/mjml-preview

MIT License

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fix onSave when more than 1 pane already opened #17

Closed kmcb777 closed 6 years ago

kmcb777 commented 6 years ago

Atom seems to trigger 'onDidSave' event once for each already opened panes (and even for panes that have been closed). It resulted in the opening of multiple preview panes. It may be the origin of #15 too.

This makes openPane execute only for active pane.