[FLINK-2908] [web frontend] Redraw web plan when browser resized

[greghogan]

Redraw the job plan visual graph when the browser width is increased.

[uce]

Hey Greg, I checked out the PR and still had the behaviour described in the JIRA (checked with Firefox and Chrome). Note that refreshing the page after resizing does also not change anything for me. There is a high chance that my setup is causing this, but is there a way to double check this? Could you maybe post a screenshot of the expected output after resizing the width (w/o refreshing) comparing it to the non-fixed version?

[greghogan]

@uce thanks for looking at this and my apologies for not including screenshots. I am also using Firefox. An explicit page reload should force page assets to be redownloaded.

Currently switching browser to fullscreen does not resize the job graph SVG:

With this PR the SVG is resized to fill the space:

[uce]

Thanks for the screenshots. My job was simple too narrow (not enough operators). After trying with a job that has more operators, I could reproduce the fix. Initially, I though that redrawing meant "zooming in" to fill the preview window.

+1 to merge, great fix!