IssueTracker

would be useful!

much needed

I need to monitor active sheet because I have different side bar for every sheet. What I'm doing now is running a JavaScript from the client side every 1s (second) to call google.script.run.monitorTabChange();. This function reads current active sheet's name and compares it with a sheet name that had been saved in a PropertyService during the last call of google.script.run.monitorTabChange();.
The spreadsheet with this script helps me with creating Purchase Orders. It pulls data from Salesforce and Quickbooks and generates a PO. So for every PO for every customer I am duplicating the spreadsheet and of course the script. The problem that I am facing is running out of quota. I have generated tons of POs already and each of them runs (even if the spreadsheet is not opened - I tested it) the 'monitorTabChange' function, which calls PropertyService. I have 100 000 quota for PropertyService calls. And I'm running out of it pretty quickly now.
The trigger 'OnSheetChange' would then save me (probably many others too) from this issue. At the same time it would saved Google tons of execution overhead (that could be significant if lots of people use the solution I do to track the sheet change).
Thanks!

will really appreciate this feature :)

I'd like an onSwitchSheets event trigger with the following information available:
The sheet I'm switching from, active cell I'm switching from, active row I'm switching from, active col I'm switching from etc.
The sheet I'm switching to with ability to:
- land in a specific cell
- modify the contents of a cell or range of cells in the switch to sheet
- initiate a re-calculate in the target sheet after changes have been made.

Even better... onPreSwitch, onSwitch, onPostSwitch

Excessive code is required to implement the functionality I'm chasing without these hooks.

Any news from Google team?
i Would like to re-hide hidden sheets when user leaves it

Hey Google,
   This feature is highly in need for us. Can you please respond?