Fixes #4185 - When leaving from a page contains nested listview, pageremove event does not fire

[jaspermdegroot]

Issue: If a page contains a listview with a nested list the pageremove event does not fire when you leave the page, although the page and its subpages do get removed from the DOM.
Solved by adjusting the 'specialized' page remove function.

Fixes #4185

Passed the unit test. Live test page: http://ugomobi.github.com/pageremove/

Note: When you leave a nested/subpage no pages are removed from the DOM. See my comments on issue 4185.

[scottjehl]

Looks good to me, aside from one thing that maybe @johnbender would have input on...

For triggering other widget (or page in this case) events, we usually do something like the following:

mypage.data( "page" )._trigger( "remove" );

...which through the widget factory would prefix the widget name to trigger a pageremove event. Any reason why we're using new $.event(... here (and in navigation.js) instead of just triggering the event as above?

[johnbender]

@scottjehl @uGoMobi

Scott is correct. That's the standard withing the library when triggering a widget specific event. We make use of the Widget Factory machinery.