timers are not always stopped when leaving a page

[erwindon]

Describe the bug
When leaving a page, the associated timer-sequence continues.
In some cases, returning to the page starts a new timer, causing multiple timers to be active.

To Reproduce
tbd

Expected behaviour
Page/panel-related timers must be stopped when leaving the page.
See e.g. options.js. function onHide.

Additional context
one positive factor: most timer-sequences are not infinite sequences.

proposal to create panelTimerHelper function.
timer is registered in Panel.
timer is disabled when isFinished=true, or when onHide is called
parameters:

• actionCallback function
• runFirstTime flag, runs the callback extra immediately
• isFinished function, signals that no more runs are needed
• isSkipped function, signals that this run is not needed
• playPause setting is always considered for skipping the function
• playPause will be hidden when isFinished=true

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[erwindon]

no library added, just plain fixes.