资源说明：firefox addon, nextpage, SPC key should goto next page when at bottom of a page

nextpage - firefox addon

use SPC key to goto next page when at the bottom of a page

* install this addon at
  https://addons.mozilla.org/en-US/firefox/addon/53484/
* Report BUGS to
  https://github.com/sylecn/ff-nextpage/issues

* addon comments is here
  https://addons.mozilla.org/en-US/firefox/addon/53484#reviews
* addon statistics is here
  https://addons.mozilla.org/en-US/statistics/addon/53484
* addon xpi file source is here
  https://addons.mozilla.org/en-US/firefox/files/browse/118464

* project homepage
  http://code.google.com/p/ff-nextpage/
* project source code
  http://github.com/sylecn/ff_nextpage/

* found a script that did the same thing
  http://board.mozest.com/thread-23048-1-1

* changelog
** release branch
   removed unimplemented prefwindow.

* implementation
** UI design
*** preferences window
    option: rebind SPC (on)
    usage tab: describe what's added to firefox and how to use nextpage.
*** add to View Menu
    menuitem: next page
** recognize these links
   > >> next(Next) "next page" 下一页
** decide whether we are at bottom of a page
   when document.height = window.pageYOffset + window.innerHeight, we are at
   bottom of the page.

* xpi pack
** change chrome.manifest to use jar
   content nextpage content/
   becomes:
   content nextpage jar:chrome/nextpage.jar!/content/
   notice the !/ is a bit like absolute path. don't use !content/.
** structure
   chrome/nextpage.jar
   chrome.manifest
   install.rdf
*** nextpage.jar
    content/
    locale/
    skin/

* XUL tips
** the key element must be placed inside a keyset element.
** here is how you modify chrome XUL element in the console:
   // disable n
   // var mainWindow = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor) .getInterface(Components.interfaces.nsIWebNavigation) .QueryInterface(Components.interfaces.nsIDocShellTreeItem) .rootTreeItem .QueryInterface(Components.interfaces.nsIInterfaceRequestor) .getInterface(Components.interfaces.nsIDOMWindow); a=mainWindow.document.getElementById('nextpage-key-n'); a.setAttribute('disabled', true); a.getAttribute('disabled')
   // enable n
   // var mainWindow = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor) .getInterface(Components.interfaces.nsIWebNavigation) .QueryInterface(Components.interfaces.nsIDocShellTreeItem) .rootTreeItem .QueryInterface(Components.interfaces.nsIInterfaceRequestor) .getInterface(Components.interfaces.nsIDOMWindow); a=mainWindow.document.getElementById('nextpage-key-n'); a.setAttribute('disabled', false); a.getAttribute('disabled')


* js tips
** js regexp tester
   http://www.regular-expressions.info/javascriptexample.html
** window.back() can go back in history.
   content.back() go back for current page.
** load a new page in current window
   content.location = url;
*** same as above, but replace current page, no history.
    content.location.replace(url);
** open a new window
   window.open(url);
** content is a Window object for the primary content window.
   use content and content.document to do anything you want to the document
   being displayed in firefox.
** dump()
   ref: https://developer.mozilla.org/en/Debugging_JavaScript
   Allows you to print text on the native console. 
** DOM reference
   https://developer.mozilla.org/en/DOM
   http://www.w3schools.com/jsref/ w3schools is evil.
   https://developer.mozilla.org/en/XUL_Tutorial/Document_Object_Model
** get scroll pos
   window.pageYOffset
   document.body.scrollTop
** get document height/width
   document.height
** disable space pagedown in firefox
   ref: http://www.webmasterworld.com/javascript/3224261.htm
   window.addEventListener('keydown',
			   function(e) {
			       if (e.keyCode == 32) {
   				   e.preventDefault();
			       }
			   }, true);
** disable space pagedown in firefox. no 2
   window.onkeydown = function(e) {
       if(e.keyCode==32){
           return false;
       }
   };

* this can also be done outside firefox.
  use a two frame page, layout just like google image, at the top frame, there
  is url box and a next/prev button/link, which can be used to control page at
  bottom frame.

  only need to use js to extract info from bottom frame.

* I need to know how to:
  define a function that return a URL
      access all  tag in current page
  define a function to load a URL in current page
  bind a hotkey to a function

* add functions for viewing documents in firefox	:firefox:programming:
  goal:
  press SPC twice can go to next page, when we are at bottom.
  press  can go to previous/next page

  implementation:
  parse links
  the link text is usually > >> next "next page" 下一页 etc
  usually the previous/next link looks like the current link.

  this may require local js. some online book reading site, discuz BBS,
  web ppt, google reader/gmail already use JS to parse keyboard command
  extensively.

  see what links look like for:
  info generated docs
  tex generated docs

** selected testing pages:
   IFRAMEs (should not catch p/n/SPC on these pages)
   http://mail.google.com    document.designMode=off
   http://mail.qq.com        document.designMode=off
   http://mail.yahoo.com
   http://blogs.utexas.edu

   A tag with onclick
   http://image.baidu.com/i?tn=baiduimage&ct=201326592&lm=-1&cl=2&word=%CC%EC%D6%AE%BA%DB
   http://comment5.comic.qq.com/comment.htm?site=comic&id=28175373

   google, A tag, innerHTML with span.
   http://www.google.com/search?q=dict&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:unofficial&client=iceweasel-a

   A tag, has both href and onclick action, both being javascript:
   http://www.bestbuy.com/site/olstemplatemapper.jsp?id=pcat17071&type=page&initialize=false&sp=&nrp=15&iht=y&list=n&sc=Global&st=ac+adapter&usc=All+Categories&ks=960&prids=&cp=2&qp=&_requestid=133557

   INPUT tag, button, onclick action.
   http://www.disneyhome.cc/products.asp?productSort=186

   mailing lists
   http://lists.gnu.org/archive/html/emacs-devel/2009-12/msg00835.html
   http://lists.mplayerhq.hu/pipermail/mplayer-users/2005-March/051882.html
   A tag, title
   http://www.mail-archive.com/debian-user@lists.debian.org/msg535462.html

   one German testing page:
   http://www.amazon.de/b/ref=amb_link_157473167_36?ie=UTF8&node=427954031&pf_rd_m=A3JWKAKR8XB7XF&pf_rd_s=center-4&pf_rd_r=1CH1PP7HYH2BHAM3A0NT&pf_rd_t=101&pf_rd_p=233563287&pf_rd_i=514699031#/ref=sr_pg_3?rh=n%3A340843031%2Cn%3A!340844031%2Cn%3A427954031&page=3&ie=UTF8&qid=1301216915

** testing page:
   an online ebook:
   http://www.tianyabook.com/wangluo2005/changanluan/004.htm
   debian install manual:
   http://www.debian.org/releases/stable/i386/
   emacs manual:
   http://www.gnu.org/software/emacs/manual/html_node/emacs/Commands.html#Commands
   fedora doc:
   http://docs.fedoraproject.org/install-guide/f12/en-US/html/
   http://docs.fedoraproject.org/user-guide/f12/en-US/html/
   boost library:
   http://www.boost.org/doc/libs/1_41_0/doc/html/array.html
   天涯.明月.刀
   http://www.tianyabook.com/hyzpj/hyzpj/wx/gulong/tymyd/00.htm

** tested pages
   http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18
   http://search.yahoo.com/search;_ylt=A0oG7hM1TJBNBl0AOwal87UF;_ylc=X1MDUCM5NTgxMDQ2OQRfcgMyBGFvAzEEZnIDc2ZwBGZyMgNzYnRuBGhvc3RwdmlkA1VmaU1xa29HN3Y3OU9NQUFUVU5UMHcwZFJuRFR3MDJRVERVQUIwMFIEbl9ncHMDMTAEb3JpZ2luA3NycARxdWVyeQN5YWhvbyBzZWFyY2gEc2FvAzEEdnRlc3RpZAM-?p=yahoo+search&fr=sfp&fr2=&iscqry=
   http://www.verycd.com/sto/movie/~cn/
   http://tieba.baidu.com/f?z=677280116&ct=335544320&lm=0&sc=0&rn=30&tn=baiduPostBrowser&word=%CB%C0%C9%F1&pn=0
   http://www.gnu.org/software/emacs/manual/html_node/emacs/Advanced-C_002dx-v-v.html#Advanced-C_002dx-v-v
   http://www.google.com
   http://lw.3edu.net/zgwx/lw_99242_2.html
   http://bbs.linyichen.com/thread-73919-2-1.html
   http://onlamp.com/pub/a/onlamp/2006/04/06/boostregex.html?page=1
   http://images.google.com/images?hl=en&um=1&q=dub&sa=N&start=40&ndsp=20
   http://userscripts.org/scripts
   http://lists.mplayerhq.hu/pipermail/mplayer-users/2005-March/051882.html
   http://mail.python.org/pipermail/python-3000/2008-September/014713.html
** sites doesn't have right value for content.document.height
   (content.document.height <= content.pageYOffset + content.innerHeight)
   is always true.
   because content.document.height is wrong on these pages.
*** but have right value for content.scrollMaxY and content.scrollY
    (content.scrollMaxY <= content.scrollY)
    http://userscripts.org/
    http://userscripts.org/about/installing
    http://www.qiushibaike.com/groups/2/hottest/day/page/1
    http://www.youtube.com/results?search_query=emacs&search_type=&aq=f
    http://planet.mysql.com/entry/?id=11940
    http://www.makeuseof.com/tag/5-great-alternative-linux-music-players/

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