Refactor: changepage outline

changepage:

arguments:

• to: page you're changing to types:

    - string: page url or id
  
    - object: jquery element or form object containing {url, data, type}
  
    - array: defines from and to (allows you to transition from a different page than current - deprecate?)
  

• transition: which transition class to use (defaults to global default transition)

• direction: forward/reverse

• changeHash: update the hash on complete?

• fromHashChange: changePage came from hashchange event

1. determine type of "to" arg (one call to $.type(to) is best)

2. try to determine "from" page: should either be active page, or first item of "to" if it's an array

3. if to is a string, strip the leading #

4. define fileURL as the request URL minus any internal params at the end

5. Attempt to guess whether it's a back/forward

6. reset base url to match new page before request goes out

7. define functions to be used once page is available

   • enhancePage

   • pageTransitionLock

   • transitionPages

     • addContainerClass
     • removeContainerClass

   • changePageComplete

8 . figure out of page is local or needs to be requested, get page either way - if ajax, call pageLoading to show the loader - call page plugin to enhance page - see if url pointed at a subpage, if so, change "to" to reference that

9. transitionPages procedure:

   1. get current scroll position
   2. scroll to top
   3. add container classes for 3d transition, if needed
   4. if there's a from page, set data on it for current scroll
   5. trigger pagebeforehide on from page
   6. trigger pagebeforeshow on to page
   7. call $.mobile.pageLoading( true ); to kill the page loader
   8. if there's a transition set, call