Treestyletab: TST not using firefox's Tab warming feature

[mustaqimM]

Short description

It seems to me that TST isn't using tab warming to switch tabs quicker. Perhaps it's my imagination but switching tabs feel slightly slower from TST than using the tab bar.
I don't know if WebExtensions can access this feature or if it's being tracked for future use.

Steps to reproduce

1. Start Firefox with clean profile.
2. Install TST.
3. Click on a tab to switch to it.
4.

Expected result

Switch tabs faster with native firefox tab warming

Actual result

Slower to switch when using TST

Environment

• Platform (OS): Linux
• Version of Firefox: 58 (Nightly)
• Version (or revision) of Tree Style Tab: 2.0.1

[TheSweetLily]

It definitely doesn't.
The old legacy TST version worked with warming, though.

[piroor]

Dup of #1337

[mustaqimM]

@piroor I don't think #1337 is related to tab warming. Warming is related to loading tab contents in the background when moused over. See here

[piroor]

Oops, sorry...

[piroor]

TST updates its tabs based on the WebExtensions API tabs.onActivated. I think I can highlight a clicked tab immediately before the event is actually fired. (But you'll see a mismatched combination while you are trying to switch tabs - tabs are updated but the content area is not.)

[piroor]

Ah, I've realized what means this issue. Firefox now speculatively loads content of tabs on the memory as "warming-up" and show it immediately when the tab is actually activated. Sadly there is no way to notify Firefox to preload a tab speculatively via WebExtensions API for now, so we need a new API.

[piroor]

I've found a bug for it: 1402256 - WebExtension API to 'warm up' a tab

[mustaqimM]

Tab warming has been enabled by default on Nightly

[irvinm]

@piroor is there more to do here?

[piroor]

TST 3.5.6 already contains a code to call the API, so this looks to be fixed.