Typical situation is that I type something (worst case is my password) in some application, when some other application pops up a window and steals the focus, so my typing (password) goes to something else. I would like to prevent this, at least when I actively type something in an edit box. I always really hated this on Windows, but I never found a way to prevent this. I started using Ubuntu a while ago, and so far I was able to do everything I wanted, so I thought maybe this is also possible. Thanks in advance!
The best recommendation I have for this issue is using "Always On Top" or "Always Below Other Windows" options for the window you need to remain (un)focused. Just right-click your title bar and check the option. I can promise, that window anyhow, will and/or will not lose focus for anything popping up.
You can also force certain windows to stay on a particular workspace. You could also divert the applications that have frequent notifications to workspace 1 and then operate from workspace 2.
As you haven't accepted an answer yet, perhaps using this bug - a minimized always-on-top window to not even put on-demand new windows on top, would help.
Install CompizConfig Settings Manager
- either from Ubuntu Software Center
or via terminal:
sudo apt-get install compizconfig-settings-manager
Open CompizConfig Settings Manager and go to General -> General options -> Focus and raise behaviour
Change the 'Focus prevention level' from 'Low' to 'Normal'.