495840 - don't automatically start plugins in background tabs (especially in session restore)

Status: NEW

(Core :: DOM: Core & HTML, enhancement, P5)

Description

[(not currently active) Ted Mielczarek]

It would be great if we would not automatically start plugins when opened in a background tab. The worst case of this is session restore, where you might have a few youtube videos open in tabs, and they all start playing in parallel when you restore your session. Instead, we should start them when you click on the tab to view it.

Comment 1

[(not currently active) Ted Mielczarek]

I talked to Boris about this, and he thought it wouldn't be too hard to do. I guess this bug is in the wrong component, since we'd probably want:
1) A way to load a document, not instantiating plugins when hit
2) A way to tell a document that's been loaded in that way to instantiate all of its plugins
3) Some hooks in Firefox to use the former for loading background tabs during session restore, and the latter when focusing a background tab

Comment 2

[Boris Zbarsky [:bzbarsky]]

Yeah, this probably wouldn't need any plug-in code per se; just code in nsObjectLoadingContent and various places above that.

Comment 4

[u88484]

Could this also be useful for OOPP as I suggested in bug 540127 comment 1?

Comment 5

[kolubinowicki]

Isn't this bug will be partially resolved by introducing in Firefox 4 a new "Bar Tab" feature (Prevents restored open tabs from all loading at the same time). 

https://bugzilla.mozilla.org/show_bug.cgi?id=561149

When setting in about:config, variable: browser.sessionstore.max_concurrent_tabs , set to zero. It prevents from loading all content (plugins) in background until tabs are clicked ?

Comment 6

[[Baboo]]

(In reply to comment #5)

Only when opened from session restore, not when one opens a link in a new background tab.

Comment 7

[Tony Mechelynck [:tonymec]]

Dupe of bug 711552?

Comment 8

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5.

If you have questions, please contact :mdaly.

Comment 9

[V. Korn]

Considering Flash death and NPAPI removal this bug is dead meat, right?