Web UI idea: user-defined categories about php-spx

[NoiseByNorthwest]

This is a great idea!
I especially like the fact that it can be fully implemented on web UI side since no additional data is required.
And I agree this could be very useful to highlight a group of functions via a pattern.

Thank you also for having provided a gif, very helpful.

To summarize:

1. The user must be able to specify several function categories (name + pattern).
   • How exactly ?
2. These categories will be stored on client side (local storage...).
3. The user must be able to color by category.
   • That means it will replace the default color scheme and the associated color scale widget. I'm OK with that, this is not anyway the most consistent & relevant part of the UI.
   • Can you detail the behavior on flat profile & flame graph widgets ? For example the flat profile could group by categories or simply colors functions.

Some implementation hints:

• call rectangles are colored here for time line overview
• call rectangles are colored here for time line focus
• one possible way to make widgets aware of this feature is to replicate what is being done for the selected metrics, see here for example
• feel free to do some clean up / refactoring

[orls]

Heh, those code areas are exactly where I've been hacking. I'm glad there's some interest!

My plan for the controls is to display a little panel on click for toggling colour scheme & managing the category definitions.

For flat profile, I was thinking of adding aggregate statistics per-category at the top or bottom. I haven't thought about what to do for the flamegraph - I'll probably leave it alone.