Created
February 18, 2016 01:29
-
-
Save djg/05323539d0894dd9119c to your computer and use it in GitHub Desktop.
nsDocument: IsActive() vs. IsVisible() vs. Hidden()
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <roc> basically, IsActive() is true when the document is associated with a GlobalWindow(inner) which is the current document in its docshell | |
| <roc> i.e. not bfcached | |
| <roc> IsVisible() is similar but more specifically delimited by the pageshow and pagehide DOM events | |
| <roc> Hidden() is like !IsActive() but all documents associated with hidden tabs are also Hdden() | |
| <roc> tabs/docshells have this "hidden" state; all Firefox tabs that aren't the topmost tab are marked hidden |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment