[MainUI] Add ECharts properties to Item

[rkoshak]

The problem

ECharts supports additional properties for how to chart and Item's tiemseries than MainUI presents to the user.

Also there are many places where the user doesn't have control over the way charts are generated by default (e.g. the "analyze" and analyze all" actions on a widget) even for the properties MainUI presents to the users when creating a custom chart.

Your suggestion

Add to stateDescription or add a new metadata where users can supply EChart properties which will be used when that Item is charted by default. I'm mainly thinking about properties like step and smooth, but I would expect any of the properties to be supported.

I'm not suggesting that all the properties supported by ECharts needs to be presented to the user. I mainly just want a way to define on a per Item basis how the graph is drawn on an individual Item's basis.

Your environment

Additional information

[florian-h05]

So you mean something like „analyzer“ metadata that controls the defaults for the analyzer, correct?
Just aside, are you aware that when defining an analyzer action on a widget, you can configure some ECharts properties?

[rkoshak]

I was not aware of that, but I was mainly thinking of a way to change the step property for the charts on the Overview tabs where we don't have access to the Analyze and Analyze All properties to modify them there. Supplying properties on custom widgets/charts only solves half of the problem.