2004503 - Wait for SettingPane to be initialized before loading it

Status: NEW

(Firefox :: Settings UI, task, P2)

Description

[Mark Striemer [:mstriemer]]

In bug 2002958 we were having some trouble getting the test to work, which may have identified a potential issue in SettingPane. The paneshown event was firing before the setting pane was loaded since we were using SettingPaneManager.registerPane() after the findInPage.js file had already forced initialization of the categories.

We call the init() function before we show a pane, but since that function is async it may not have loaded before we actually show the pane. When the test code was running in this state its checkbox didn't exist and we couldn't check that it got focused.

Update the category initialization code to make sure a category has rendered before we fire the paneshown event