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  1. // ==UserScript==
  2. // @name PageZipper
  3. // @namespace http://userstyles.org
  4. // @description autopagerize
  5. // @author pagezipper
  6. // @homepage http://userstyles.org/styles/15692
  7. // @include http://*
  8. // @include https://*
  9. // ==/UserScript==
  10.  
  11. /** PageZipper - www.printwhatyoulike.com/pagezipper
  12. * A bookmarklet to make any page infinte scroll
  13. * Written by Jonathan Koomjian (jonathan@printwhatyoulike.com)
  14. *
  15. * You are free to reuse this software.
  16. * Please be friendly and include a link back to the PageZipper
  17. * homepage (http://www.printwhatyoulike.com/pagezipper) on
  18. * the website of any software which incorporates PageZippper code.
  19. *
  20. * PageZipper is open source
  21. * Contributions are welcome - https://github.com/jkoomjian/PageZipper
  22. *
  23. *
  24. * Version 0.8 - April 16, 2014
  25. *
  26. * /; ;\
  27. * __ \\____//
  28. * /{_\_/ `'\____
  29. * \___ (o) (o }
  30. * _____________________________/ :--'
  31. * ,-,'`@@@@@@@@ @@@@@@ \_ `__\
  32. * ;:( @@@@@@@@@ @@@ \___(o'o)
  33. * :: ) @@@@ @@@@@@ ,'@@( `===='
  34. * :: : @@@@@: @@@@ `@@@:
  35. * :: \ @@@@@: @@@@@@@) ( '@@@'
  36. * ;; /\ /`, @@@@@@@@@\ :@@@@@)
  37. * ::/ ) {_----------------: :~`,~~;
  38. * ;;'`; : ) : / `; ;
  39. * ;;; : : ; : ; ; :
  40. * `'` / : : : : : :
  41. * )_ \__; ";" :_ ; \_\ `,','
  42. * :__\ \ * `,'* \ \ : \ * 8`;'* *
  43. * `^' \ :/ `^' `-^-' \v/ : \/
  44. *
  45. *
  46. */
  47.  
  48.  
  49. /*!
  50. * jQuery JavaScript Library v1.4.4
  51. * http://jquery.com/
  52. *
  53. * Copyright 2010, John Resig
  54. * Dual licensed under the MIT or GPL Version 2 licenses.
  55. * http://jquery.org/license
  56. *
  57. * Includes Sizzle.js
  58. * http://sizzlejs.com/
  59. * Copyright 2010, The Dojo Foundation
  60. * Released under the MIT, BSD, and GPL Licenses.
  61. *
  62. * Date: Thu Nov 11 19:04:53 2010 -0500
  63. */
  64. (function(E,B){function ka(a,b,d){if(d===B&&a.nodeType===1){d=a.getAttribute("data-"+b);if(typeof d==="string"){try{d=d==="true"?true:d==="false"?false:d==="null"?null:!c.isNaN(d)?parseFloat(d):Ja.test(d)?c.parseJSON(d):d}catch(e){}c.data(a,b,d)}else d=B}return d}function U(){return false}function ca(){return true}function la(a,b,d){d[0].type=a;return c.event.handle.apply(b,d)}function Ka(a){var b,d,e,f,h,l,k,o,x,r,A,C=[];f=[];h=c.data(this,this.nodeType?"events":"__events__");if(typeof h==="function")h=
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  193. if(E.ActiveXObject)c.ajaxSettings.xhr=function(){if(E.location.protocol!=="file:")try{return new E.XMLHttpRequest}catch(a){}try{return new E.ActiveXObject("Microsoft.XMLHTTP")}catch(b){}};c.support.ajax=!!c.ajaxSettings.xhr();var ea={},vb=/^(?:toggle|show|hide)$/,wb=/^([+\-]=)?([\d+.\-]+)(.*)$/,ba,pa=[["height","marginTop","marginBottom","paddingTop","paddingBottom"],["width","marginLeft","marginRight","paddingLeft","paddingRight"],["opacity"]];c.fn.extend({show:function(a,b,d){if(a||a===0)return this.animate(S("show",
  194. 3),a,b,d);else{d=0;for(var e=this.length;d<e;d++){a=this[d];b=a.style.display;if(!c.data(a,"olddisplay")&&b==="none")b=a.style.display="";b===""&&c.css(a,"display")==="none"&&c.data(a,"olddisplay",qa(a.nodeName))}for(d=0;d<e;d++){a=this[d];b=a.style.display;if(b===""||b==="none")a.style.display=c.data(a,"olddisplay")||""}return this}},hide:function(a,b,d){if(a||a===0)return this.animate(S("hide",3),a,b,d);else{a=0;for(b=this.length;a<b;a++){d=c.css(this[a],"display");d!=="none"&&c.data(this[a],"olddisplay",
  195. d)}for(a=0;a<b;a++)this[a].style.display="none";return this}},_toggle:c.fn.toggle,toggle:function(a,b,d){var e=typeof a==="boolean";if(c.isFunction(a)&&c.isFunction(b))this._toggle.apply(this,arguments);else a==null||e?this.each(function(){var f=e?a:c(this).is(":hidden");c(this)[f?"show":"hide"]()}):this.animate(S("toggle",3),a,b,d);return this},fadeTo:function(a,b,d,e){return this.filter(":hidden").css("opacity",0).show().end().animate({opacity:b},a,d,e)},animate:function(a,b,d,e){var f=c.speed(b,
  196. d,e);if(c.isEmptyObject(a))return this.each(f.complete);return this[f.queue===false?"each":"queue"](function(){var h=c.extend({},f),l,k=this.nodeType===1,o=k&&c(this).is(":hidden"),x=this;for(l in a){var r=c.camelCase(l);if(l!==r){a[r]=a[l];delete a[l];l=r}if(a[l]==="hide"&&o||a[l]==="show"&&!o)return h.complete.call(this);if(k&&(l==="height"||l==="width")){h.overflow=[this.style.overflow,this.style.overflowX,this.style.overflowY];if(c.css(this,"display")==="inline"&&c.css(this,"float")==="none")if(c.support.inlineBlockNeedsLayout)if(qa(this.nodeName)===
  197. "inline")this.style.display="inline-block";else{this.style.display="inline";this.style.zoom=1}else this.style.display="inline-block"}if(c.isArray(a[l])){(h.specialEasing=h.specialEasing||{})[l]=a[l][1];a[l]=a[l][0]}}if(h.overflow!=null)this.style.overflow="hidden";h.curAnim=c.extend({},a);c.each(a,function(A,C){var J=new c.fx(x,h,A);if(vb.test(C))J[C==="toggle"?o?"show":"hide":C](a);else{var w=wb.exec(C),I=J.cur()||0;if(w){var L=parseFloat(w[2]),g=w[3]||"px";if(g!=="px"){c.style(x,A,(L||1)+g);I=(L||
  198. 1)/J.cur()*I;c.style(x,A,I+g)}if(w[1])L=(w[1]==="-="?-1:1)*L+I;J.custom(I,L,g)}else J.custom(I,C,"")}});return true})},stop:function(a,b){var d=c.timers;a&&this.queue([]);this.each(function(){for(var e=d.length-1;e>=0;e--)if(d[e].elem===this){b&&d[e](true);d.splice(e,1)}});b||this.dequeue();return this}});c.each({slideDown:S("show",1),slideUp:S("hide",1),slideToggle:S("toggle",1),fadeIn:{opacity:"show"},fadeOut:{opacity:"hide"},fadeToggle:{opacity:"toggle"}},function(a,b){c.fn[a]=function(d,e,f){return this.animate(b,
  199. d,e,f)}});c.extend({speed:function(a,b,d){var e=a&&typeof a==="object"?c.extend({},a):{complete:d||!d&&b||c.isFunction(a)&&a,duration:a,easing:d&&b||b&&!c.isFunction(b)&&b};e.duration=c.fx.off?0:typeof e.duration==="number"?e.duration:e.duration in c.fx.speeds?c.fx.speeds[e.duration]:c.fx.speeds._default;e.old=e.complete;e.complete=function(){e.queue!==false&&c(this).dequeue();c.isFunction(e.old)&&e.old.call(this)};return e},easing:{linear:function(a,b,d,e){return d+e*a},swing:function(a,b,d,e){return(-Math.cos(a*
  200. Math.PI)/2+0.5)*e+d}},timers:[],fx:function(a,b,d){this.options=b;this.elem=a;this.prop=d;if(!b.orig)b.orig={}}});c.fx.prototype={update:function(){this.options.step&&this.options.step.call(this.elem,this.now,this);(c.fx.step[this.prop]||c.fx.step._default)(this)},cur:function(){if(this.elem[this.prop]!=null&&(!this.elem.style||this.elem.style[this.prop]==null))return this.elem[this.prop];var a=parseFloat(c.css(this.elem,this.prop));return a&&a>-1E4?a:0},custom:function(a,b,d){function e(l){return f.step(l)}
  201. var f=this,h=c.fx;this.startTime=c.now();this.start=a;this.end=b;this.unit=d||this.unit||"px";this.now=this.start;this.pos=this.state=0;e.elem=this.elem;if(e()&&c.timers.push(e)&&!ba)ba=setInterval(h.tick,h.interval)},show:function(){this.options.orig[this.prop]=c.style(this.elem,this.prop);this.options.show=true;this.custom(this.prop==="width"||this.prop==="height"?1:0,this.cur());c(this.elem).show()},hide:function(){this.options.orig[this.prop]=c.style(this.elem,this.prop);this.options.hide=true;
  202. this.custom(this.cur(),0)},step:function(a){var b=c.now(),d=true;if(a||b>=this.options.duration+this.startTime){this.now=this.end;this.pos=this.state=1;this.update();this.options.curAnim[this.prop]=true;for(var e in this.options.curAnim)if(this.options.curAnim[e]!==true)d=false;if(d){if(this.options.overflow!=null&&!c.support.shrinkWrapBlocks){var f=this.elem,h=this.options;c.each(["","X","Y"],function(k,o){f.style["overflow"+o]=h.overflow[k]})}this.options.hide&&c(this.elem).hide();if(this.options.hide||
  203. this.options.show)for(var l in this.options.curAnim)c.style(this.elem,l,this.options.orig[l]);this.options.complete.call(this.elem)}return false}else{a=b-this.startTime;this.state=a/this.options.duration;b=this.options.easing||(c.easing.swing?"swing":"linear");this.pos=c.easing[this.options.specialEasing&&this.options.specialEasing[this.prop]||b](this.state,a,0,1,this.options.duration);this.now=this.start+(this.end-this.start)*this.pos;this.update()}return true}};c.extend(c.fx,{tick:function(){for(var a=
  204. c.timers,b=0;b<a.length;b++)a[b]()||a.splice(b--,1);a.length||c.fx.stop()},interval:13,stop:function(){clearInterval(ba);ba=null},speeds:{slow:600,fast:200,_default:400},step:{opacity:function(a){c.style(a.elem,"opacity",a.now)},_default:function(a){if(a.elem.style&&a.elem.style[a.prop]!=null)a.elem.style[a.prop]=(a.prop==="width"||a.prop==="height"?Math.max(0,a.now):a.now)+a.unit;else a.elem[a.prop]=a.now}}});if(c.expr&&c.expr.filters)c.expr.filters.animated=function(a){return c.grep(c.timers,function(b){return a===
  205. b.elem}).length};var xb=/^t(?:able|d|h)$/i,Ia=/^(?:body|html)$/i;c.fn.offset="getBoundingClientRect"in t.documentElement?function(a){var b=this[0],d;if(a)return this.each(function(l){c.offset.setOffset(this,a,l)});if(!b||!b.ownerDocument)return null;if(b===b.ownerDocument.body)return c.offset.bodyOffset(b);try{d=b.getBoundingClientRect()}catch(e){}var f=b.ownerDocument,h=f.documentElement;if(!d||!c.contains(h,b))return d||{top:0,left:0};b=f.body;f=fa(f);return{top:d.top+(f.pageYOffset||c.support.boxModel&&
  206. h.scrollTop||b.scrollTop)-(h.clientTop||b.clientTop||0),left:d.left+(f.pageXOffset||c.support.boxModel&&h.scrollLeft||b.scrollLeft)-(h.clientLeft||b.clientLeft||0)}}:function(a){var b=this[0];if(a)return this.each(function(x){c.offset.setOffset(this,a,x)});if(!b||!b.ownerDocument)return null;if(b===b.ownerDocument.body)return c.offset.bodyOffset(b);c.offset.initialize();var d,e=b.offsetParent,f=b.ownerDocument,h=f.documentElement,l=f.body;d=(f=f.defaultView)?f.getComputedStyle(b,null):b.currentStyle;
  207. for(var k=b.offsetTop,o=b.offsetLeft;(b=b.parentNode)&&b!==l&&b!==h;){if(c.offset.supportsFixedPosition&&d.position==="fixed")break;d=f?f.getComputedStyle(b,null):b.currentStyle;k-=b.scrollTop;o-=b.scrollLeft;if(b===e){k+=b.offsetTop;o+=b.offsetLeft;if(c.offset.doesNotAddBorder&&!(c.offset.doesAddBorderForTableAndCells&&xb.test(b.nodeName))){k+=parseFloat(d.borderTopWidth)||0;o+=parseFloat(d.borderLeftWidth)||0}e=b.offsetParent}if(c.offset.subtractsBorderForOverflowNotVisible&&d.overflow!=="visible"){k+=
  208. parseFloat(d.borderTopWidth)||0;o+=parseFloat(d.borderLeftWidth)||0}d=d}if(d.position==="relative"||d.position==="static"){k+=l.offsetTop;o+=l.offsetLeft}if(c.offset.supportsFixedPosition&&d.position==="fixed"){k+=Math.max(h.scrollTop,l.scrollTop);o+=Math.max(h.scrollLeft,l.scrollLeft)}return{top:k,left:o}};c.offset={initialize:function(){var a=t.body,b=t.createElement("div"),d,e,f,h=parseFloat(c.css(a,"marginTop"))||0;c.extend(b.style,{position:"absolute",top:0,left:0,margin:0,border:0,width:"1px",
  209. height:"1px",visibility:"hidden"});b.innerHTML="<div style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;'><div></div></div><table style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;' cellpadding='0' cellspacing='0'><tr><td></td></tr></table>";a.insertBefore(b,a.firstChild);d=b.firstChild;e=d.firstChild;f=d.nextSibling.firstChild.firstChild;this.doesNotAddBorder=e.offsetTop!==5;this.doesAddBorderForTableAndCells=
  210. f.offsetTop===5;e.style.position="fixed";e.style.top="20px";this.supportsFixedPosition=e.offsetTop===20||e.offsetTop===15;e.style.position=e.style.top="";d.style.overflow="hidden";d.style.position="relative";this.subtractsBorderForOverflowNotVisible=e.offsetTop===-5;this.doesNotIncludeMarginInBodyOffset=a.offsetTop!==h;a.removeChild(b);c.offset.initialize=c.noop},bodyOffset:function(a){var b=a.offsetTop,d=a.offsetLeft;c.offset.initialize();if(c.offset.doesNotIncludeMarginInBodyOffset){b+=parseFloat(c.css(a,
  211. "marginTop"))||0;d+=parseFloat(c.css(a,"marginLeft"))||0}return{top:b,left:d}},setOffset:function(a,b,d){var e=c.css(a,"position");if(e==="static")a.style.position="relative";var f=c(a),h=f.offset(),l=c.css(a,"top"),k=c.css(a,"left"),o=e==="absolute"&&c.inArray("auto",[l,k])>-1;e={};var x={};if(o)x=f.position();l=o?x.top:parseInt(l,10)||0;k=o?x.left:parseInt(k,10)||0;if(c.isFunction(b))b=b.call(a,d,h);if(b.top!=null)e.top=b.top-h.top+l;if(b.left!=null)e.left=b.left-h.left+k;"using"in b?b.using.call(a,
  212. e):f.css(e)}};c.fn.extend({position:function(){if(!this[0])return null;var a=this[0],b=this.offsetParent(),d=this.offset(),e=Ia.test(b[0].nodeName)?{top:0,left:0}:b.offset();d.top-=parseFloat(c.css(a,"marginTop"))||0;d.left-=parseFloat(c.css(a,"marginLeft"))||0;e.top+=parseFloat(c.css(b[0],"borderTopWidth"))||0;e.left+=parseFloat(c.css(b[0],"borderLeftWidth"))||0;return{top:d.top-e.top,left:d.left-e.left}},offsetParent:function(){return this.map(function(){for(var a=this.offsetParent||t.body;a&&!Ia.test(a.nodeName)&&
  213. c.css(a,"position")==="static";)a=a.offsetParent;return a})}});c.each(["Left","Top"],function(a,b){var d="scroll"+b;c.fn[d]=function(e){var f=this[0],h;if(!f)return null;if(e!==B)return this.each(function(){if(h=fa(this))h.scrollTo(!a?e:c(h).scrollLeft(),a?e:c(h).scrollTop());else this[d]=e});else return(h=fa(f))?"pageXOffset"in h?h[a?"pageYOffset":"pageXOffset"]:c.support.boxModel&&h.document.documentElement[d]||h.document.body[d]:f[d]}});c.each(["Height","Width"],function(a,b){var d=b.toLowerCase();
  214. c.fn["inner"+b]=function(){return this[0]?parseFloat(c.css(this[0],d,"padding")):null};c.fn["outer"+b]=function(e){return this[0]?parseFloat(c.css(this[0],d,e?"margin":"border")):null};c.fn[d]=function(e){var f=this[0];if(!f)return e==null?null:this;if(c.isFunction(e))return this.each(function(l){var k=c(this);k[d](e.call(this,l,k[d]()))});if(c.isWindow(f))return f.document.compatMode==="CSS1Compat"&&f.document.documentElement["client"+b]||f.document.body["client"+b];else if(f.nodeType===9)return Math.max(f.documentElement["client"+
  215. b],f.body["scroll"+b],f.documentElement["scroll"+b],f.body["offset"+b],f.documentElement["offset"+b]);else if(e===B){f=c.css(f,d);var h=parseFloat(f);return c.isNaN(h)?f:h}else return this.css(d,typeof e==="string"?e:e+"px")}})})(window);
  216.  
  217. function PageZipper() {
  218.  
  219. /*------------------ Configuration -------------------*/
  220. //TODO add non-english synonyms
  221. this.nextSynonyms = [
  222. //beware, the order of this list is referenced elsewhere!
  223. {syn: "next", weight: 100},
  224. {syn: "older", weight: 80},
  225. {syn: "previous", weight: 60},
  226. {syn: "forward", weight: 50},
  227. {syn: "continue", weight: 45},
  228. {syn: ">", weight: 40, humanReadableOnly: true},
  229. {syn: ">>", weight: 30, humanReadableOnly: true},
  230. {syn: "more", weight: 20},
  231. {syn: "page", weight: 10},
  232. {syn: "-1", weight: 0, humanReadableOnly: true, pageBar: true} //for nav bars that list pages 1234, list the next page
  233. ];
  234. this.minimumPageBuffer = 1; //number of unread pages to keep queued
  235. this.minimumPageBufferGallery = 4; //# unread pages with image galleries
  236. this.poster_image_margin_top = 40; //how close from the top edge of the browser should the next poster image be placed
  237. this.poster_image_margin_bottom = 10; //how close from the bottom edge of the browser should the next poster image be placed
  238. this.in_compat_mode = false; //in compat/iframe mode? default is ajax mode
  239. this.debug = false;
  240.  
  241. /*------------------------- PageZipper Instance Variables ------------------*/
  242. this.pages = []; //page, nextLink, posterImg
  243. this.is_running = false;
  244. this.is_loading_page = false;
  245. this.loader_type = "";
  246. this.ctrl_key_pressed = false;
  247. this.curr_next_synonym = null; //keep track of which next synonym we use- then use it only- otherwise when we reach the end of a gallery, we will get the back/previous link
  248. this.onePosterPerPageMode = false;
  249. this.displayMode = "text"; //can be 'image' or 'text' depending on if this is an image gallery
  250. this.currDomain;
  251. this.url_list;
  252. this.media_path;
  253. }
  254. //stashing jQuery here so we can get it out of the global scope - required by FF addon reviewers
  255. PageZipper.jq = jQuery.noConflict(true);
  256.  
  257.  
  258. /*------------------------- Initialize ----------------------*/
  259. PageZipper.prototype.loadPageZipper = function() {
  260.  
  261. //start with some housekeeping
  262. this.jq = PageZipper.jq;
  263. this.ajax = new PageZipperAjax();
  264. this.iframe = new PageZipperIframe();
  265.  
  266. //add in Node value - ff provides these, but they do not exist for the extension ?!?! Or for IE
  267. if (!window['Node']) {
  268. window.Node = {
  269. ELEMENT_NODE: 1,
  270. TEXT_NODE: 3
  271. }
  272. }
  273.  
  274. pgzp().currDomain = pgzp().getDomain(pgzp().win.location.href);
  275. pgzp().url_list = [ pgzp().win.location.href ];
  276. if (pgzp().loader_type != "autorun") {
  277. pgzp().addExistingPage(pgzp().win.location.href, pgzp().doc.body);
  278. pgzp().displayMode = pgzp().calculateDisplayMode(pgzp().pages[0]);
  279. if (pgzp().displayMode == 'image' && pgzp().pages[0].posterImgs.length == 1) {
  280. pgzp().onePosterPerPageMode = true;
  281. pgzp().minimumPageBuffer = pgzp().minimumPageBufferGallery;
  282. }
  283. //Override document.write to prevent additional pages from writing to this closed page and messing everything up! - won't apply in iframes
  284. if (!pgzp().in_compat_mode) {
  285. //FF makes this hard due to security: mikeconley.ca/blog/2009/05/02/overriding-firefox's-windowalert-part-2/ developer.mozilla.org/en/XPCNativeWrapper
  286. var currDoc = pgzp().loader_type == "ffextension" ? document.getElementById('content').contentWindow.wrappedJSObject.document : pgzp().doc;
  287. currDoc.write = currDoc.writeln = currDoc.open = currDoc.close = function(str) { return; };
  288. }
  289. }
  290. }
  291.  
  292. PageZipper.prototype.runPageZipper = function() {
  293. pgzp().jq(pgzp().doc).bind("keydown", this.keyDown)
  294. pgzp().jq(pgzp().doc).bind("keyup", this.keyUp)
  295. if (pgzp().loader_type != "ffextension") pgzp().jq(pgzp().win).bind("resize", this.positionMenu); //gets called on new tab in ffext
  296. pgzp().addMenu();
  297. pgzp().updateButtonState(pgzp().in_compat_mode, 'compat');
  298. this.is_running = pgzp().win.setInterval(pgzp().mainBlock, 250);
  299. }
  300.  
  301. PageZipper.prototype.stopPageZipper = function() {
  302. if (this.is_running) {
  303. pgzp().win.clearInterval(this.is_running);
  304. this.is_running = null;
  305. pgzp().removeMenu();
  306. pgzp().jq(pgzp().doc).unbind("keydown", this.keyDown);
  307. pgzp().jq(pgzp().doc).unbind("keyup", this.keyUp);
  308. if (pgzp().loader_type != "ffextension") pgzp().jq(pgzp().win).unbind("resize", this.positionMenu);
  309.  
  310. //compat only - turn off key bindings added to every iframe
  311. if (pgzp().in_compat_mode) {
  312. for (var i=1; i<pgzp().pages.length; i++){
  313. pgzp().jq(pgzp().pages[i].ifrDoc).unbind("keydown", this.keyDown);
  314. pgzp().jq(pgzp().pages[i].ifrDoc).unbind("keyup", this.keyUp);
  315. }
  316. }
  317. }
  318. }
  319.  
  320. /*------------------------- Main Block ----------------------*/
  321. PageZipper.prototype.mainBlock = function() {
  322. if (!pgzp()) return; //Firefox when we have switched tabs
  323. var currPageIndex = pgzp().getCurrentPage();
  324. var currViewablePage = pgzp().getViewableCurrentPage(currPageIndex);
  325.  
  326. // var nextLinkObj = pgzp().pages[pgzp().pages.length-1]["nextLinkObj"]
  327. // console.log("is loading: " + !pgzp().is_loading_page + "# pages: " + pgzp().pages.length + " nextLink: " + (nextLinkObj ? nextLinkObj.url : 'none') + " currPageIndex: " + currPageIndex + " currViewablePage: " + currViewablePage);
  328.  
  329. pgzp().menuSetCurrPageNumber(currViewablePage + 1);
  330. pgzp().setPageVisibility(currViewablePage);
  331.  
  332. if (!pgzp().is_loading_page &&
  333. pgzp().pages[pgzp().pages.length-1]["nextLinkObj"] && //has next link
  334. ((pgzp().pages.length - currPageIndex - 1) < pgzp().minimumPageBuffer) //scrolling
  335. ) {
  336. pgzp().is_loading_page = true;
  337. pgzp().loadPage( pgzp().pages[pgzp().pages.length-1].nextLinkObj.url );
  338. }
  339. }
  340.  
  341. /*------------------------- Determine Current Page ----------------------*/
  342. //returns the 0-based index of the current displayed page in pgzp().pages
  343. PageZipper.prototype.getCurrentPage = function() {
  344. var i, currPage, currPageTop, currPageBottom;
  345. var currViewBottom = pgzp().screen.getScrollTop() + pgzp().screen.getViewportHeight();
  346. for (i=0; i<pgzp().pages.length; i++) {
  347. currPage = pgzp().pages[i].inPageElem;
  348. currPageTop = pgzp().findPos(currPage).y;
  349.  
  350. //if this is the last elem, calculate from bottom of page, else calculate distance to next page
  351. if (i == (pgzp().pages.length - 1)) {
  352. currPageBottom = pgzp().screen.getDocumentHeight();
  353. //if this is the last page, and page bottom does not extend to bottom, set currPageBottom to currViewBottom
  354. if (currPageBottom < currViewBottom) currPageBottom = currViewBottom;
  355. } else {
  356. currPageBottom = pgzp().findPos( pgzp().pages[ (i+1) ].inPageElem ).y;
  357. }
  358.  
  359. //curr page if we have the following order on the page
  360. // pageTop
  361. // viewBottom
  362. // pageBottom
  363. // pgzp.log("currPageTop: " + currPageTop + " browser bottom: " + currViewBottom + " currPageBottom: " + currPageBottom + " isGood" + (currPageTop <= currViewBottom && currViewBottom <= currPageBottom) + " currPage: " + i);
  364. if (currPageTop <= currViewBottom && currViewBottom <= currPageBottom) {
  365. return i;
  366. }
  367. }
  368. return pgzp().pages.length; //we're at the end of pgzp().pages
  369. }
  370.  
  371. //gets the current page as viewed by user - whichever page takes up the most space on page is current viewable page
  372. PageZipper.prototype.getViewableCurrentPage = function(currPage) {
  373. //update page # once next page takes up more than 50% of space in viewport
  374. var currPageObj = pgzp().pages[currPage];
  375.  
  376. if ((pgzp().findPos(currPageObj.inPageElem).y - Math.abs(pgzp().screen.getScrollTop())) > (pgzp().screen.getViewportHeight() / 2)) {
  377. return currPage - 1;
  378. }
  379. return currPage;
  380. }
  381.  
  382. /*------------------------- Display Mode ----------------------*/
  383.  
  384. PageZipper.prototype.calculateDisplayMode = function(currPage){
  385. var textArea = 0, imgArea = 0;
  386. var i=0, txtP, imgs = {};
  387.  
  388. //first calculate the area of all text on this page
  389. var txtP = pgzp().doc.createElement("div");
  390. txtP.style.clear = "both";
  391. txtP.appendChild( pgzp().doc.createTextNode( pgzp().getAllTextOnPage(currPage.elemContent) ));
  392. pgzp().doc.body.appendChild(txtP);
  393. textArea = txtP.offsetWidth * txtP.offsetHeight;
  394. pgzp().doc.body.removeChild(txtP);
  395.  
  396. //calculate area of poster imgs
  397. if (currPage.posterImgs == null) currPage.posterImgs = pgzp().getPosterImagesOnPage(currPage.elemContent);
  398.  
  399. //make sure we remove all duplicates! This is important for sites like google and yahoo which use the same image multiple times (sprite.png)
  400. for (i=0; i<currPage.posterImgs.length; i++) {
  401. imgs[ currPage.posterImgs[i].src ] = currPage.posterImgs[i];
  402. }
  403.  
  404. for (var imgUrl in imgs) {
  405. var img = imgs[imgUrl];
  406. imgArea += img.offsetHeight * img.offsetWidth;
  407. }
  408.  
  409. //pgzp().log("textArea: " + textArea + " imgArea: " + imgArea + " mode: " + ((textArea >= imgArea) ? "text" : "image"));
  410. return (textArea >= imgArea) ? "text" : "image";
  411. }
  412.  
  413. PageZipper.prototype.getAllTextOnPage = function(pageHtml) {
  414. var str = "";
  415.  
  416. pgzp().depthFirstRecursion(pageHtml, function(curr) {
  417. if (curr.nodeType == Node.TEXT_NODE && curr.parentNode.nodeType == Node.ELEMENT_NODE && typeof(curr.parentNode.tagName) == "string") {
  418. try {
  419. var tagName = curr.parentNode.tagName.toLowerCase();
  420. //filter out obvious bad stuff. could be improved, but works well enough as is
  421. if (tagName == "div" || tagName == "span" || tagName == "p" || tagName == "td")
  422. str += curr.nodeValue + "\n";
  423. } catch (ex) {
  424. console.dir(curr);
  425. }
  426. }
  427. });
  428. return str;
  429. }
  430.  
  431. /*------------------------- Hide Old Pages ----------------------*/
  432. //hide pages farther than 10 pages back. This conserves the browsers resources and
  433. //prevents it from getting slowed down by displaying dozens of pages
  434. //Leave the first page showing, and make sure the current page is always showing
  435. PageZipper.prototype.setPageVisibility = function(currPageIndex) {
  436.  
  437. //make sure the current page is visible
  438. var currPage = pgzp().pages[currPageIndex];
  439. if (currPage.elemContent.style.visibility == "hidden") {
  440. currPage.elemContent.style.visibility = "visible";
  441. }
  442.  
  443. //hide pages farther back than 10 (show the first page)
  444. if (currPageIndex > 5) {
  445. var oldPage = pgzp().pages[currPageIndex - 5];
  446. if (oldPage.elemContent.style.visibility != "hidden") oldPage.elemContent.style.visibility = "hidden";
  447. }
  448. }
  449.  
  450. /* Handle Compatibility Mode */
  451.  
  452. PageZipper.prototype.toggleCompatMode = function() {
  453. pgzp().is_loading_page = true; //don't load any more pages
  454.  
  455. //scroll to top
  456. pgzp().win.scrollTo(0, 0);
  457.  
  458. //update menupgzp().addIframePlaceholder();
  459. pgzp().menuIncrementPagesLoaded(1);
  460.  
  461. //remove all loaded pages - except existing page!
  462. while (pgzp().pages.length > 1) {
  463. var currPage = pgzp().pages.pop();
  464. pgzp().jq( currPage.elemContent ).remove();
  465. pgzp().url_list.pop();
  466. }
  467.  
  468. //set compat mode
  469. pgzp().in_compat_mode = !pgzp().in_compat_mode;
  470.  
  471. //make sure we have the iframe placeholder
  472. if (pgzp().jq(pgzp().doc).find("#pgzp_iframe_placeholder").length == 0) {
  473. pgzp().addIframePlaceholder();
  474. }
  475.  
  476. //update menu
  477. pgzp().updateButtonState(pgzp().in_compat_mode, 'compat');
  478.  
  479. pgzp().is_loading_page = false; //resume
  480. }
  481.  
  482.  
  483. /*------------------------- Image Stuff ----------------------*/
  484. //return array of all poster images on page
  485. PageZipper.prototype.getPosterImagesOnPage = function(page) {
  486. var posterImgs = [], filteredImages = [];
  487. var okImgDomains = {"www.flickr.com": 1};
  488. var isFillerImg = function(img) {
  489.  
  490. //ignore all images of size less than 100x100 - these can't possibly be big enough to be poster images
  491. if ( (img.offsetWidth * img.offsetHeight) < (100 * 100) ) {
  492. filteredImages.push(img);
  493. return true;
  494. }
  495.  
  496. //ignore images which are links to different domains - ie ads, widgets, or logos pointing to home page
  497. var p = img.parentNode;
  498. if (p.nodeType == Node.ELEMENT_NODE && p.tagName.toLowerCase() == "a") {
  499. //pgzp().log("domain: " + pgzp().getDomain(p.href) + " diff domain: " + (pgzp().getDomain(p.href) != pgzp().currDomain) + " home: " + (p.href == ('http://' + pgzp().currDomain)));
  500. if (pgzp().getDomain(p.href) != pgzp().currDomain && okImgDomains[pgzp().getDomain(p.href)] != 1) {
  501. return true;
  502. }
  503. }
  504.  
  505. return false;
  506. }
  507.  
  508. var getBiggestImg = function(imgs) {
  509. var biggestImg = null;
  510. for (var i=0; i<imgs.length; i++) {
  511. if (biggestImg == null || ((imgs[i].offsetWidth * imgs[i].offsetHeight) > (biggestImg.offsetWidth * biggestImg.offsetHeight))) {
  512. biggestImg = imgs[i];
  513. }
  514. }
  515. return biggestImg;
  516. }
  517.  
  518. //get all images on given page
  519. var imgs = pgzp().convertToArray( page.getElementsByTagName("img") );
  520. //pgzp().logList(imgs, "#imgs: " + imgs.length + " + urls", "#{o.src}: #{o.parentNode.tagName} url: #{o.parentNode.href}");
  521.  
  522. //filter out unimportant images
  523. pgzp().filter(imgs, isFillerImg);
  524. //pgzp().logList(imgs, "#imgs: " + imgs.length + " + urls after filter", "#{o.src}: #{o.parentNode.tagName} url: #{o.parentNode.href}");
  525.  
  526. if (imgs.length < 2) return imgs; //if 0 or 1 imgs, just return
  527.  
  528. //sort by size
  529. imgs.sort(function(a, b) {
  530. var sizeA = a.offsetWidth * a.offsetHeight;
  531. var sizeB = b.offsetWidth * b.offsetHeight;
  532. return sizeB - sizeA;
  533. });
  534. //pgzp().logList(imgs, "imgs ordered by size", "#{o.offsetWidth * o.offsetHeight}\t#{o.src}");
  535.  
  536. //if just 1 img per page, return biggest img
  537. if (pgzp().onePosterPerPageMode) return [ imgs[0] ];
  538.  
  539. //Add back in the largest filtered image
  540. //the idea here is that we are looking for a series of large images, all about the same size
  541. //we find these by comparing to the sizes of the other images on the page, and finding the largest gaps between image sizes
  542. //so we need 1 image we know is outside the group to compare against
  543. //since biggestSmallImg image is smallest in imgs, it will always get filtered out
  544. var biggestSmallImg = getBiggestImg(filteredImages);
  545. if (biggestSmallImg) imgs.push(biggestSmallImg);
  546.  
  547. //mark the largest gap in size between image sizes, then delete all images after the gap
  548. var biggestGap = [0, 1]; //gap, index of bigger elem
  549. for (var i=1; i<imgs.length; i++) {
  550. var bigger = imgs[i-1], biggerSize = bigger.offsetHeight * bigger.offsetWidth;
  551. var smaller = imgs[i], smallerSize = smaller.offsetHeight * smaller.offsetWidth;
  552. var relGap = (biggerSize == 0 || smallerSize == 0 ? 0 : (biggerSize / smallerSize)), absGap = (biggerSize - smallerSize), totalGap = (relGap * absGap);
  553. //pgzp().log("rel gap: " + relGap + " abs gap: " + absGap + " total gap: " + totalGap + " smallerSize: " + smallerSize + " biggerSize: " + biggerSize + " smaller img: " + imgs[i].src);
  554. if (totalGap >= biggestGap[0]) {
  555. biggestGap = [totalGap, i];
  556. }
  557. }
  558.  
  559. //remove all images after the gap
  560. //pgzp().log("biggest gap: " + biggestGap[0] + " at img: " + imgs[biggestGap[1]].src);
  561. imgs.splice(biggestGap[1], (imgs.length - biggestGap[1]) );
  562.  
  563. //return poster imgs, ordered by y position - top to bottom
  564. imgs.sort(function(a, b) {
  565. return pgzp().findPos(a).y - pgzp().findPos(b).y;
  566. });
  567. //pgzp().logList(imgs, "#poster imgs: " + imgs.length + " ordered by y", "#{pgzp().findPos(o).y}\t#{o.src}");
  568.  
  569. return imgs;
  570. }
  571.  
  572. //if a given image is taller than the viewport, resize the image to fit perfectly in the viewport
  573. PageZipper.prototype.resizeImageToViewport = function(img) {
  574. var usableViewport = pgzp().screen.getViewportHeight() - pgzp().poster_image_margin_top - pgzp().poster_image_margin_bottom;
  575. if (img.offsetHeight > usableViewport) {
  576. //scale image
  577. img.style.width = ( usableViewport / img.offsetHeight ) * img.offsetWidth + 'px';
  578. img.style.height = usableViewport + 'px';
  579. }
  580. }
  581.  
  582. //go to the next poster image
  583. //TODO combine goToNext and goToPrevious
  584. PageZipper.prototype.goToNextPosterImage = function() {
  585. var browserBorderTop = pgzp().screen.getScrollTop() + pgzp().poster_image_margin_top + 1; //start looking for next poster image below this line
  586. var top_margin;
  587.  
  588. for (var i=0; i<pgzp().pages.length; i++) {
  589. //calculate the largest image here - we leave this as late as possible b/c all images on page have to be loaded
  590. if (pgzp().pages[i].posterImgs == null) pgzp().pages[i].posterImgs = pgzp().getPosterImagesOnPage(pgzp().pages[i].elemContent);
  591.  
  592. for (var j=0; j<pgzp().pages[i].posterImgs.length; j++) {
  593. var currPosterImg = pgzp().pages[i].posterImgs[j];
  594. var pos = pgzp().findPos(currPosterImg);
  595. //pgzp().log("page " + i + " of " + pgzp.pages.length + " : " + pos.y + " body: " + pgzp.pages[i].page + " " + pgzp.pages[i].page.id);
  596. //array should be ordered top to bottom
  597. if (pos.y > browserBorderTop) {
  598.  
  599. //make sure this is not a centered image
  600. if (currPosterImg["pgzpCenterOffset"] && ((parseInt(currPosterImg["pgzpCenterOffset"], 10) + browserBorderTop) >= pos.y)) continue;
  601.  
  602. pgzp().resizeImageToViewport(currPosterImg);
  603.  
  604. //center image
  605. var center_margin = (pgzp().screen.getViewportHeight() - currPosterImg.offsetHeight) / 2
  606. if (center_margin > pgzp().poster_image_margin_top) {
  607. top_margin = center_margin;
  608. currPosterImg["pgzpCenterOffset"] = center_margin;
  609. } else {
  610. top_margin = pgzp().poster_image_margin_top;
  611. }
  612.  
  613. var amountToScroll = pos.y - top_margin - pgzp().screen.getScrollTop();
  614. pgzp().win.scrollBy(0, amountToScroll);
  615. return;
  616. }
  617. }
  618. }
  619. }
  620.  
  621. PageZipper.prototype.goToPreviousPosterImage = function() {
  622. var browserBorderBottom = pgzp().screen.getScrollTop() + pgzp().screen.getViewportHeight() - pgzp().poster_image_margin_top - 1; //start looking for next poster above below this line
  623. var top_margin;
  624.  
  625. //iterate from bottom to top- find first image w/top above browser top
  626. for (var i=(pgzp().pages.length-1); i>=0; i--) {
  627. if (pgzp().pages[i].posterImgs == null) pgzp().pages[i].posterImgs = pgzp().getPosterImagesOnPage(pgzp().pages[i].elemContent);
  628.  
  629. for (var j=(pgzp().pages[i].posterImgs.length-1); j>=0; j--) {
  630. var currPosterImg = pgzp().pages[i].posterImgs[j];
  631. var pos = pgzp().findPos(currPosterImg);
  632. //array should be ordered top to bottom
  633. if (pos.y < browserBorderBottom) {
  634.  
  635. //make sure this is not a centered image
  636. if (currPosterImg["pgzpCenterOffset"] && ((parseInt(currPosterImg["pgzpCenterOffset"], 10) + pgzp().screen.getScrollTop() - 1) <= pos.y)) continue;
  637.  
  638. pgzp().resizeImageToViewport(currPosterImg);
  639.  
  640. //center image
  641. var center_margin = (pgzp().screen.getViewportHeight() - currPosterImg.offsetHeight) / 2
  642. if (center_margin > pgzp().poster_image_margin_top) {
  643. top_margin = center_margin;
  644. currPosterImg["pgzpCenterOffset"] = center_margin;
  645. } else {
  646. top_margin = pgzp().poster_image_margin_top;
  647. }
  648.  
  649. var amountToScroll = (pos.y - top_margin) - pgzp().screen.getScrollTop();
  650. pgzp().win.scrollBy(0, amountToScroll);
  651. return;
  652. }
  653. }
  654. }
  655. }
  656.  
  657. /*------------------------- Javascript Toolbox by Matt Kruse ----------------------*/
  658. /**
  659. * Copyright (c)2005-2008 Matt Kruse (http://www.javascripttoolbox.com/lib/util/source.php)
  660. *
  661. * Dual licensed under the MIT and GPL licenses.
  662. * This basically means you can use this code however you want for
  663. * free, but don't claim to have written it yourself!
  664. * Donations always accepted: http://www.JavascriptToolbox.com/donate/
  665. *
  666. * Please do not link to the .js files on javascripttoolbox.com from
  667. * your site. Copy the files locally to your server instead.
  668. *
  669. */
  670.  
  671.  
  672. // Util function to default a bad number to 0
  673. // --------------------------------------------------------------------
  674. PageZipper.prototype.zero = function(n) {
  675. return (!pgzp().defined(n) || isNaN(n))?0:n;
  676. };
  677.  
  678. // Determine if a reference is defined
  679. PageZipper.prototype.defined = function(o) {
  680. return (typeof(o)!="undefined");
  681. };
  682.  
  683. /* ******************************************************************* */
  684. /* CSS FUNCTIONS */
  685. /* ******************************************************************* */
  686. PageZipper.prototype.css = (function(){
  687. var css = {};
  688.  
  689. // Convert an RGB string in the form "rgb (255, 255, 255)" to "#ffffff"
  690. css.rgb2hex = function(rgbString) {
  691. if (typeof(rgbString)!="string" || !pgzp().defined(rgbString.match)) { return null; }
  692. var result = rgbString.match(/^\s*rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*/);
  693. if (result==null) { return rgbString; }
  694. var rgb = +result[1] << 16 | +result[2] << 8 | +result[3];
  695. var hex = "";
  696. var digits = "0123456789abcdef";
  697. while(rgb!=0) {
  698. hex = digits.charAt(rgb&0xf)+hex;
  699. rgb>>>=4;
  700. }
  701. while(hex.length<6) { hex='0'+hex; }
  702. return "#" + hex;
  703. };
  704.  
  705. // Convert hyphen style names like border-width to camel case like borderWidth
  706. css.hyphen2camel = function(property) {
  707. if (!pgzp().defined(property) || property==null) { return null; }
  708. if (property.indexOf("-")<0) { return property; }
  709. var str = "";
  710. var c = null;
  711. var l = property.length;
  712. for (var i=0; i<l; i++) {
  713. c = property.charAt(i);
  714. str += (c!="-")?c:property.charAt(++i).toUpperCase();
  715. }
  716. return str;
  717. };
  718.  
  719. // Get the currently-applied style of an object - expects propery in dash form - ex. border-left-width
  720. css.getStyle = function(o, property) {
  721. if (o==null) { return null; }
  722. var val = null;
  723. var camelProperty = css.hyphen2camel(property);
  724. // Handle "float" property as a special case
  725. if (property=="float") {
  726. val = css.getStyle(o,"cssFloat");
  727. if (val==null) {
  728. val = css.getStyle(o,"styleFloat");
  729. }
  730. }
  731. else if (o.currentStyle && pgzp().defined(o.currentStyle[camelProperty])) {
  732. val = o.currentStyle[camelProperty];
  733. }
  734. else if (pgzp().win.getComputedStyle) {
  735. val = pgzp().win.getComputedStyle(o,null).getPropertyValue(property);
  736. }
  737. else if (o.style && pgzp().defined(o.style[camelProperty])) {
  738. val = o.style[camelProperty];
  739. }
  740. // For color values, make the value consistent across browsers
  741. // Convert rgb() colors back to hex for consistency
  742. if (/^\s*rgb\s*\(/.test(val)) {
  743. val = css.rgb2hex(val);
  744. }
  745. // Lowercase all #hex values
  746. if (/^#/.test(val)) {
  747. val = val.toLowerCase();
  748. }
  749. return val;
  750. };
  751.  
  752. // Set a style on an object
  753. css.setStyle = function(o, property, value) {
  754. if (o==null || !pgzp().defined(o.style) || !pgzp().defined(property) || property==null || !pgzp().defined(value)) { return false; }
  755. if (property=="float") {
  756. o.style["cssFloat"] = value;
  757. o.style["styleFloat"] = value;
  758. } else if (property=="opacity") {
  759. o.style['-moz-opacity'] = value;
  760. o.style['-khtml-opacity'] = value;
  761. o.style.opacity = value;
  762. if (pgzp().defined(o.style.filter)) {
  763. o.style.filter = "alpha(opacity=" + value*100 + ")";
  764. }
  765. } else {
  766. o.style[css.hyphen2camel(property)] = value;
  767. }
  768.  
  769. return true;
  770. };
  771.  
  772. // Determine if an object or class string contains a given class.
  773. css.hasClass = function(obj,className) {
  774. if (!pgzp().defined(obj) || obj==null || !RegExp) { return false; }
  775. var re = new RegExp("(^|\\s)" + className + "(\\s|$)");
  776. if (typeof(obj)=="string") {
  777. return re.test(obj);
  778. } else if (typeof(obj)=="object" && obj.className) {
  779. return re.test(obj.className);
  780. }
  781. return false;
  782. };
  783.  
  784. // Add a class to an object
  785. css.addClass = function(obj,className) {
  786. if (typeof(obj)!="object" || obj==null || !pgzp().defined(obj.className)) { return false; }
  787. if (obj.className==null || obj.className=='') {
  788. obj.className = className;
  789. return true;
  790. }
  791. if (pgzp().css.hasClass(obj,className)) { return true; }
  792. obj.className = obj.className + " " + className;
  793. return true;
  794. };
  795.  
  796. // Remove a class from an object
  797. css.removeClass = function(obj,className) {
  798. if (typeof(obj)!="object" || obj==null || !pgzp().defined(obj.className) || obj.className==null) { return false; }
  799. if (!pgzp().css.hasClass(obj,className)) { return false; }
  800. var re = new RegExp("(^|\\s+)" + className + "(\\s+|$)");
  801. obj.className = obj.className.replace(re,' ');
  802. return true;
  803. };
  804.  
  805. // Fully replace a class with a new one
  806. css.replaceClass = function(obj,className,newClassName) {
  807. if (typeof(obj)!="object" || obj==null || !pgzp().defined(obj.className) || obj.className==null) { return false; }
  808. pgzp().css.removeClass(obj,className);
  809. pgzp().css.addClass(obj,newClassName);
  810. return true;
  811. };
  812.  
  813. return css;
  814. })();
  815.  
  816.  
  817. /* ******************************************************************* */
  818. /* SCREEN FUNCTIONS */
  819. /* ******************************************************************* */
  820. PageZipper.prototype.screen = (function() {
  821. var screen = {};
  822.  
  823. // Get a reference to the body
  824. screen.getBody = function() {
  825. if (pgzp().doc.body) {
  826. return pgzp().doc.body;
  827. }
  828. if (pgzp().doc.getElementsByTagName) {
  829. var bodies = pgzp().doc.getElementsByTagName("BODY");
  830. if (bodies!=null && bodies.length>0) {
  831. return bodies[0];
  832. }
  833. }
  834. return null;
  835. };
  836.  
  837. // Get the amount that the main document has scrolled from top
  838. screen.getScrollTop = function() {
  839. if (pgzp().doc.documentElement && pgzp().defined(pgzp().doc.documentElement.scrollTop) && pgzp().doc.documentElement.scrollTop>0) {
  840. return pgzp().doc.documentElement.scrollTop;
  841. }
  842. if (pgzp().doc.body && pgzp().defined(pgzp().doc.body.scrollTop)) {
  843. return pgzp().doc.body.scrollTop;
  844. }
  845. return null;
  846. };
  847.  
  848. // Get the height of the entire document
  849. screen.getDocumentHeight = function() {
  850. var body = pgzp().screen.getBody();
  851. var innerHeight = (pgzp().defined(self.innerHeight)&&!isNaN(self.innerHeight))?self.innerHeight:0;
  852. if (pgzp().doc.documentElement && (!pgzp().doc.compatMode || pgzp().doc.compatMode=="CSS1Compat")) {
  853. var topMargin = parseInt(pgzp().css.getStyle(body,'margin-top'),10) || 0;
  854. var bottomMargin = parseInt(pgzp().css.getStyle(body,'margin-bottom'), 10) || 0;
  855. return Math.max(body.offsetHeight + topMargin + bottomMargin, pgzp().doc.documentElement.clientHeight, pgzp().doc.documentElement.scrollHeight, pgzp().zero(self.innerHeight));
  856. }
  857. return Math.max(body.scrollHeight, body.clientHeight, pgzp().zero(self.innerHeight));
  858. };
  859.  
  860. // Get the width of the viewport (viewable area) in the browser window
  861. screen.getViewportWidth = function() {
  862. if (pgzp().doc.documentElement && (!pgzp().doc.compatMode || pgzp().doc.compatMode=="CSS1Compat")) {
  863. return pgzp().doc.documentElement.clientWidth;
  864. } else if (pgzp().doc.compatMode && pgzp().doc.body) {
  865. return pgzp().doc.body.clientWidth;
  866. }
  867. return screen.zero(self.innerWidth);
  868. };
  869.  
  870. // Get the height of the viewport (viewable area) in the browser window
  871. screen.getViewportHeight = function() {
  872. if (!pgzp().win.opera && pgzp().doc.documentElement && (!pgzp().doc.compatMode || pgzp().doc.compatMode=="CSS1Compat")) {
  873. return pgzp().doc.documentElement.clientHeight;
  874. } else if (pgzp().doc.compatMode && !pgzp().win.opera && pgzp().doc.body) {
  875. return pgzp().doc.body.clientHeight;
  876. }
  877. return pgzp().zero(self.innerHeight);
  878. };
  879.  
  880. return screen;
  881. })();
  882.  
  883. /*------------------------ Menu Stuff ----------------------------*/
  884. PageZipper.prototype.addMenu = function() {
  885. var css = " \
  886. #pgzp_menu a, #pgzp_menu a * {border: 0; text-decoration: none;} \
  887. #pgzp_menu {position: fixed; top: 0px; float:left; padding: 0px 5px; background-color: #D3D3D3; color: black; z-index: 2147483647;} \
  888. .pgzp_block {display: block; float: left; line-height: 32px;} \
  889. .pgzp_button {display: block; width: 32px; height: 32px;} \
  890. a.pgzp_button_prev_active {background: transparent url('${media_path}32-gnome-prev.png') no-repeat scroll top left; } \
  891. a:hover.pgzp_button_prev_active {background-image: url('${media_path}32-gnome-prev_red.png'); } \
  892. a.pgzp_button_prev_inactive {background: transparent url('${media_path}32-gnome-prev_gray.png') no-repeat scroll top left; } \
  893. a.pgzp_button_next_active {background: transparent url('${media_path}32-gnome-next.png') no-repeat scroll top left; } \
  894. a:hover.pgzp_button_next_active {background-image: url('${media_path}32-gnome-next_red.png'); } \
  895. a.pgzp_button_next_inactive {background: transparent url('${media_path}32-gnome-next_gray.png') no-repeat scroll top left; } \
  896. #pgzp_button_compat {padding-left: 6px;} \
  897. .pgzp_button_compat_active {background: transparent url('${media_path}compat-mode.png') no-repeat scroll 4px 4px;} \
  898. .pgzp_button_compat_inactive {background: transparent url('${media_path}compat-mode-inactive.png') no-repeat scroll 4px 4px;} \
  899. #pgzp_curr_page {font-size: 24px;} \
  900. #pgzp_loaded_pages {font-size: 18px;} \
  901. ";
  902.  
  903. var html = " \
  904. <div id='pgzp_menu'> \
  905. <a href='javascript:pgzp().goToNext(-1)' id='pgzp_button_prev' class='pgzp_block pgzp_button pgzp_button_prev_active' title='Previous - Cntrl Up or Cntrl <'></a> \
  906. <a href='javascript:pgzp().goToNext(1)' id='pgzp_button_next' class='pgzp_block pgzp_button pgzp_button_next_active' title='Next - Cntrl Down or Cntrl >'></a> \
  907. <div class='pgzp_block' style='padding-left: 5px;'><span id='pgzp_curr_page' title='Current Page'>1</span><span id='pgzp_loaded_pages' title='Pages Loaded'>/1</span></div> \
  908. <a href='javascript:pgzp().toggleCompatMode()' id='pgzp_button_compat' class='pgzp_block pgzp_button pgzp_button_compat_inactive' title='Compatibility Mode - Slower, but less likely to encounter problems'></a> \
  909. <a href='http://www.printwhatyoulike.com/pagezipper' target='_blank' title='PageZipper Home' class='pgzp_block pgzp_button' style='margin-left: -6px'> \
  910. <img src='${media_path}zipper_32.png' alt='PageZipper!' style='border-width: 0px' /> \
  911. </a> \
  912. </div> \
  913. ";
  914.  
  915. //replace ${media_path} with actual value
  916. css = pgzp().jq.trim( css.replace(/\$\{media_path\}/g, pgzp().media_path) );
  917. html = pgzp().jq.trim( html.replace(/\$\{media_path\}/g, pgzp().media_path) );
  918.  
  919. //insert css
  920. var cssElem = pgzp().doc.createElement('style');
  921. cssElem.setAttribute("type", "text/css");
  922. if (cssElem.styleSheet) {
  923. cssElem.styleSheet.cssText = css; //IE only
  924. } else {
  925. cssElem.appendChild( pgzp().doc.createTextNode(css) ); //everyone else
  926. }
  927. pgzp().doc.getElementsByTagName('head')[0].appendChild(cssElem);
  928.  
  929. //insert html
  930. var div = pgzp().doc.createElement("div");
  931. div.innerHTML = html;
  932. div = div.childNodes[0];
  933. pgzp().doc.body.appendChild(div);
  934. pgzp().positionMenu();
  935.  
  936. //make some changes for the extension
  937. if (pgzp().loader_type == "ffextension" || pgzp().loader_type == "chromeext") {
  938. var fixLink = function(linkId, eventHandler) {
  939. var link = pgzp().doc.getElementById(linkId);
  940. link.removeAttribute("href");
  941. pgzp().jq(link).bind("click", eventHandler);
  942. }
  943. fixLink("pgzp_button_prev", pgzp().prevArrow)
  944. fixLink("pgzp_button_next", pgzp().nextArrow)
  945. fixLink("pgzp_button_compat", pgzp().toggleCompatMode)
  946. }
  947. }
  948.  
  949. PageZipper.prototype.positionMenu = function() {
  950. var div = pgzp().doc.getElementById('pgzp_menu');
  951. //if (div) b/c sometimes iframes included by the page call resize
  952. if (div) div.style.left = (pgzp().screen.getViewportWidth() - div.offsetWidth - 30) + 'px';
  953. }
  954.  
  955. PageZipper.prototype.removeMenu = function() {
  956. var menu = pgzp().doc.getElementById('pgzp_menu');
  957. if (menu) pgzp().doc.body.removeChild(menu);
  958. }
  959.  
  960. PageZipper.prototype.menuIncrementPagesLoaded = function(numPages) {
  961. var loadedPages = pgzp().doc.getElementById("pgzp_loaded_pages"), num;
  962. if (loadedPages) {
  963. //just to make this more confusing, parseInt is in window, not window.content in ff-extension
  964. num = parseInt(loadedPages.innerHTML.replace("/", "", "g"), 10);
  965. num = numPages ? numPages : num+1;
  966. loadedPages.innerHTML = "/" + num;
  967. }
  968. }
  969.  
  970. PageZipper.prototype.menuSetCurrPageNumber = function(currPage) {
  971. var currPageObj = pgzp().pages[currPage - 1];
  972. pgzp().doc.getElementById("pgzp_curr_page").innerHTML = currPage;
  973.  
  974. //disable/enable arrows as required
  975. if (pgzp().displayMode == "text") {
  976. pgzp().updateButtonState((currPage != 1), "prev"); //if on first page, prev disabled, else enabled
  977. pgzp().updateButtonState((currPage != pgzp().pages.length), "next"); //if on last page next, disabled, else enabled
  978. } else {
  979. var top = pgzp().screen.getScrollTop();
  980.  
  981. //for prev, only disable when we are above first img on first page
  982. var displayPrev = (pgzp().findPos(pgzp().pages[0].posterImgs[0]).y < top)
  983. pgzp().updateButtonState(displayPrev, "prev");
  984. //for next, disble if currPage == lastPage and we are below last image on page
  985. var disableNext = (currPage == pgzp().pages.length &&
  986. currPageObj.posterImgs &&
  987. pgzp().findPos( currPageObj.posterImgs[ currPageObj.posterImgs.length-1 ] ).y < (top+pgzp().poster_image_margin_top+1)
  988. );
  989. pgzp().updateButtonState(!disableNext, "next");
  990. }
  991. }
  992.  
  993. //buttonName = 'prev' or 'next' or 'compat'
  994. PageZipper.prototype.updateButtonState = function(enable, buttonName) {
  995. var button = pgzp().doc.getElementById("pgzp_button_" + buttonName);
  996. var activeClass = "pgzp_button_" + buttonName + "_active";
  997. var inactiveClass = "pgzp_button_" + buttonName + "_inactive";
  998.  
  999. if (enable) {
  1000. pgzp().css.replaceClass(button, inactiveClass, activeClass);
  1001. } else {
  1002. pgzp().css.replaceClass(button, activeClass, inactiveClass);
  1003. }
  1004.  
  1005. if (buttonName == 'compat') {
  1006. button.title = enable ? button.title.replace('disabled', 'enabled') : button.title.replace('enabled', 'disabled');
  1007. }
  1008. }
  1009.  
  1010. /*------------------------- Menu Events ----------------------*/
  1011. PageZipper.prototype.keyDown = function(event) {
  1012. //pgzp().log("key down: " + event.which, true);
  1013. switch (event.which) {
  1014. //down arrow, >
  1015. case 40:
  1016. case 190:
  1017. if (pgzp().ctrl_key_pressed) {
  1018. pgzp().goToNext(1);
  1019. pgzp().noBubble(event);
  1020. }
  1021. break;
  1022. //up arrow, <
  1023. case 38:
  1024. case 188:
  1025. if (pgzp().ctrl_key_pressed) {
  1026. pgzp().goToNext(-1);
  1027. pgzp().noBubble(event);
  1028. }
  1029. break;
  1030. //seperate handler for cntrl
  1031. //treat apple key like cntrl
  1032. case 17:
  1033. case 224:
  1034. pgzp().ctrl_key_pressed = true;
  1035. break;
  1036. }
  1037. }
  1038.  
  1039. PageZipper.prototype.keyUp = function(event) {
  1040. //pgzp().log("key up: " + event.which, true);
  1041. switch (event.which) {
  1042. //cntrl
  1043. case 17:
  1044. case 224:
  1045. pgzp().ctrl_key_pressed = false;
  1046. break;
  1047. }
  1048. }
  1049.  
  1050. /*------------------------- Page Stuff ----------------------*/
  1051. PageZipper.prototype.goToNext = function(inc){
  1052. var currPageIndex = pgzp().getViewableCurrentPage(pgzp().getCurrentPage());
  1053.  
  1054. if (pgzp().displayMode == 'text') {
  1055. pgzp().goToNextPage(inc, currPageIndex);
  1056. } else {
  1057. if (inc > 0)
  1058. pgzp().goToNextPosterImage();
  1059. else
  1060. pgzp().goToPreviousPosterImage();
  1061. }
  1062. }
  1063.  
  1064. //For FF Extension
  1065. PageZipper.prototype.nextArrow = function(){pgzp().goToNext(1);}
  1066. PageZipper.prototype.prevArrow = function(){pgzp().goToNext(-1);}
  1067.  
  1068. PageZipper.prototype.goToNextPage = function(inc, currPageIndex) {
  1069. var currPage, pos, amountToScroll, ps;
  1070. currPageIndex += inc;
  1071. if (currPageIndex in pgzp().pages) {
  1072. currPage = pgzp().pages[currPageIndex].inPageElem;
  1073. //if currPage has a p elem, scroll to first p
  1074. // ps = currPage.getElementsByTagName("p");
  1075. // //make sure this p is visible
  1076. // if (ps.length > 0 && pgzp().css.getStyle(ps[0], "display") != "none" && pgzp().findPos(ps[0]).y > 10) {
  1077. // amountToScroll = pgzp().findPos(ps[0]).y - pgzp().screen.getScrollTop() - 40; //a little margin
  1078. // } else {
  1079. amountToScroll = pgzp().findPos(currPage).y - pgzp().screen.getScrollTop();
  1080. // }
  1081. pgzp().win.scrollBy(0, amountToScroll);
  1082. }
  1083. }
  1084.  
  1085. /*------------------------- Get Next Page URL ----------------------*/
  1086. //NextLink object we will be scoring
  1087. //isReadableText = human readable content- not url
  1088. PageZipper.prototype.NextLink = function(text, link, alreadyLoaded, isHumanReadableText) {
  1089. this.text = text;
  1090. this.link = link;
  1091. this.syn = '';
  1092. this.isHumanReadableText = (isHumanReadableText == undefined) ? true : isHumanReadableText;
  1093. this.isVisibleText = false; //is this.text visible on the page?
  1094. this.alreadyLoaded = alreadyLoaded;
  1095. this.url = link.href;
  1096. this.finalScore = null;
  1097. this.trialScores = {};
  1098. this.addScore = function(trialName, score, isNormalized) {
  1099. var normalizedKey = isNormalized ? 'normalizedScore' : 'unnormalizedScore';
  1100. if (!this.trialScores[trialName]) this.trialScores[trialName] = {};
  1101. this.trialScores[trialName][normalizedKey] = score;
  1102. }
  1103. this.getScore = function(trialName, isNormalized) {
  1104. //for trials which do not get normalized, just return unnormalized score
  1105. if (isNormalized && pgzp().trials[trialName].noNormailization) isNormalized = false;
  1106. var normalizedKey = isNormalized ? 'normalizedScore' : 'unnormalizedScore';
  1107. return this.trialScores[trialName][normalizedKey];
  1108. }
  1109. this.calculateTotalScore = function() {
  1110. this.finalScore = 0;
  1111. if (pgzp().debug) var debugStr = "Calculate Final Score: " + this.text + ": " + this.url;
  1112. for (var trial in this.trialScores) {
  1113. if (pgzp().trials.hasOwnProperty(trial)) {
  1114. var nScore = this.getScore(trial, true);
  1115. var weight = pgzp().trials[trial].weight;
  1116. this.finalScore += nScore * weight;
  1117. if (pgzp().debug) debugStr += "\n\t" + trial + "\t\t\t" + nScore + "\tx\t" + weight + "\t=\t" + (nScore * weight);
  1118. }
  1119. }
  1120. //pgzp().log(debugStr + "\nFinal Score:\t" + this.finalScore);
  1121. return this.finalScore;
  1122. }
  1123. this.isSynNumber = function() {
  1124. return pgzp().isNumber(this.syn);
  1125. }
  1126. }
  1127.  
  1128. //Trials - These are the tests we will use to score the links
  1129. PageZipper.prototype.trials = {
  1130. 'contains_next_syn': {
  1131. 'doScore': function(nextLink) {
  1132. var i, currWord, score = 0;
  1133. for (i=0; i<pgzp().nextSynonyms.length; i++) {
  1134. currWord = pgzp().nextSynonyms[i];
  1135. //+ for containing a keyword
  1136. if (nextLink.text.toLowerCase().indexOf(currWord.syn) >= 0) {
  1137. if (currWord['humanReadableOnly']) {
  1138. if (
  1139. !nextLink.isHumanReadableText || //don't allow index as syn on urls
  1140. nextLink.text.toLowerCase().indexOf("comment") >= 0 //blogs often say something link '2 comments' - ignore this
  1141. ) continue;
  1142. }
  1143. //make sure syns are not included as part of something else - ex 'page 2', not '2009', 'older' not placeholder.jpg
  1144. //for human readable, identify breaks by whitespace, for non-human readable, use any non a-z character
  1145. //'next' is never used outside its meaning, so dont worry about it
  1146. if (currWord.syn != "next" && !pgzp().isStandaloneWord(currWord.syn, nextLink.text, nextLink.isHumanReadableText)) continue;
  1147. if (currWord['pageBar'] && !nextLink.isPageBar) continue; //if this is a # from page bar, make sure this link is actually in page bar
  1148. //pgzp().log("adding syn: " + currWord.syn + " to " + nextLink.url);
  1149. if (currWord.weight >= score) {
  1150. score = currWord.weight; //assign weight for keyword used
  1151. nextLink.syn = currWord.syn;
  1152. }
  1153. } else if (!currWord['humanReadableOnly'] && nextLink.url.toLowerCase().indexOf(currWord.syn) >= 0) {
  1154. //also check urls
  1155. if (!pgzp().isStandaloneWord(currWord.syn, nextLink.url, false)) continue;
  1156. if (currWord.weight >= score) {
  1157. score = currWord.weight; //assign weight for keyword used
  1158. nextLink.syn = currWord.syn;
  1159. }
  1160. }
  1161. }
  1162. return score;
  1163. },
  1164. 'weight': 100,
  1165. 'noNormailization': true
  1166. },
  1167. //urls similar to known next urls are more likely to be correct
  1168. 'url_similarity': {
  1169. 'doScore': function(nextLink) {
  1170. var lastUrl, currUrl, shorter, longer, score = 0, notMatchingPos = -1, i;
  1171. lastUrl = pgzp().pages[ pgzp().pages.length-1 ].url;
  1172. currUrl = nextLink.url;
  1173. if (lastUrl.length <= currUrl.length) {
  1174. shorter = lastUrl;
  1175. longer = currUrl;
  1176. } else {
  1177. shorter = currUrl;
  1178. longer = lastUrl;
  1179. }
  1180.  
  1181. //subtract points for differences in length
  1182. score = shorter.length - longer.length;
  1183.  
  1184. //add points for matching chars, remove for different chars
  1185. for (i=0; i<shorter.length; i++) {
  1186. if (shorter.charAt(i) == longer.charAt(i)) {
  1187. score++;
  1188. } else {
  1189. score--;
  1190. if (notMatchingPos < 0) notMatchingPos = i;
  1191. }
  1192. }
  1193.  
  1194. //if the two urls are the same except 1 number, which is off by 1, that is a dead giveaway
  1195. if (notMatchingPos > 0 &&
  1196. pgzp().isNumber(longer.charAt(notMatchingPos)) && pgzp().isNumber(shorter.charAt(notMatchingPos)) &&
  1197. (Math.abs(pgzp().getNumberAtPos(shorter, notMatchingPos) - pgzp().getNumberAtPos(longer, notMatchingPos)) == 1)
  1198. ) {
  1199. score += 100;
  1200. }
  1201. return score;
  1202. },
  1203. 'weight': 70,
  1204. 'noNormailization': true
  1205. },
  1206. //if multiple links have the same text but point to different urls, they are not next links
  1207. 'duplicate_text': {
  1208. 'doScore': function(nextLink) {
  1209. var score = 100;
  1210. if (pgzp().linkTextIndex[nextLink.text] && pgzp().linkTextIndex[nextLink.text].length > 0) {
  1211. //subtract 20 points for each additional url
  1212. score = score - (pgzp().linkTextIndex[nextLink.text].length - 1) * 20;
  1213. }
  1214. return score;
  1215. },
  1216. 'weight': 60
  1217. },
  1218. 'url_ends_in_number': {
  1219. 'doScore': function(nextLink) {
  1220. var results = nextLink.url.match(/^.*?(\d+)(\/+|\.\w+)?$/);
  1221. //verify url ends in number & number is < 99 - we want /page=3 not /abx43923829
  1222. if (results && (parseInt(results[1], 10) < 99))
  1223. return 100;
  1224. else
  1225. return 0;
  1226. },
  1227. 'weight': 20
  1228. },
  1229. 'begins_or_ends_with_next_syn': {
  1230. 'doScore': function(nextLink) {
  1231. if (nextLink.syn && (pgzp().startsWith(nextLink.syn, nextLink.text.toLowerCase()) || pgzp().endsWith(nextLink.syn, nextLink.text.toLowerCase())))
  1232. return 100;
  1233. else
  1234. return 0;
  1235. },
  1236. 'weight': 20
  1237. },
  1238. 'text_size': {
  1239. 'doScore': function(nextLink) {
  1240. //points for larger size per char
  1241. return Math.floor( (nextLink.link.offsetWidth * nextLink.link.offsetHeight) / nextLink.text.length );
  1242. },
  1243. 'weight': 10
  1244. },
  1245. 'chars_in_text': {
  1246. 'doScore': function(nextLink) {
  1247. //-1pt for each char in text
  1248. return nextLink.text.length * -1;
  1249. },
  1250. 'weight': 10
  1251. }
  1252. };
  1253.  
  1254. PageZipper.prototype.getNextLink = function(body) {
  1255. var allNextLinks = pgzp().getAllScoredLinks(body)
  1256. if (allNextLinks.length <= 0) return null;
  1257.  
  1258. var highestLink = pgzp().getHighestTotalScore(allNextLinks);
  1259.  
  1260. //keep track of the matching next syn - if it changes, assume we are using a different link and have reached the end of the set
  1261. //stop here if highestLink has a different syn than the first link
  1262. if (pgzp().pages.length > 1 && //don't check on first page
  1263. !pgzp().pages[0].nextLinkObj.isSynNumber() && !highestLink.isSynNumber() && //only compare if we are not using page indexes
  1264. pgzp().pages[0].nextLinkObj.syn != highestLink.syn)
  1265. return null;
  1266. return highestLink;
  1267. }
  1268.  
  1269. PageZipper.prototype.getAutorunNextLink = function(body) {
  1270. var scoredLinks = [];
  1271. var allNextLinks = pgzp().getAllScoredLinks(body)
  1272. if (allNextLinks.length <= 0) return null;
  1273.  
  1274. for (var i=0; i<allNextLinks.length; i++) {
  1275. var score = allNextLinks[i].calculateTotalScore();
  1276. scoredLinks.push( [score, allNextLinks[i]] );
  1277. }
  1278.  
  1279. //sort
  1280. scoredLinks.sort(function(a, b){
  1281. return b[0] - a[0];
  1282. });
  1283.  
  1284. // pgzp().log(scoredLinks);
  1285.  
  1286. //make sure the top link has a score of at least 15000
  1287. if (scoredLinks[0][0] < 15000) return null;
  1288.  
  1289. //check if the top link is 30% than the next link
  1290. for (i=1; i<scoredLinks.length; i++) {
  1291.  
  1292. if (scoredLinks[i][1].url == scoredLinks[0][1].url) {
  1293. continue;
  1294. }
  1295.  
  1296. //next smallest link must be at least 30% smaller
  1297. if ( (scoredLinks[i][0] / scoredLinks[0][0]) > .7) {
  1298. return null;
  1299. } else {
  1300. return scoredLinks[0][1];
  1301. }
  1302. }
  1303.  
  1304. //only 1 good link
  1305. return scoredLinks[0][1];
  1306. }
  1307.  
  1308. PageZipper.prototype.getAllScoredLinks = function(body) {
  1309. var allNextLinks = pgzp().getAllNextLinks(body);
  1310. var pageBarInfo = pgzp().getCurrentPageNumberFromPageBar(allNextLinks);
  1311. // pgzp().log("looking for page #: " + (pageBarInfo[0] + 1) + " w/confidence: " + pageBarInfo[1]);
  1312. pgzp().nextSynonyms[pgzp().nextSynonyms.length-1].syn = (pageBarInfo[0] + 1) + ""; //update nextSynonyms
  1313. pgzp().nextSynonyms[pgzp().nextSynonyms.length-1].weight = pageBarInfo[1]; //update weight/confidence
  1314. pgzp().linkTextIndex = pgzp().indexDuplicateLinks(allNextLinks);
  1315. pgzp().filter(allNextLinks, function(link) {return link.alreadyLoaded;}); //filter out already loaded links, needed by pageBar, but not anymore
  1316. pgzp().scoreLinks(allNextLinks);
  1317. pgzp().normalizeLinks(allNextLinks);
  1318. return allNextLinks;
  1319. }
  1320.  
  1321. //get all links and score them
  1322. PageZipper.prototype.scoreLinks = function(allNextLinks) {
  1323. if (pgzp().debug) var debugMsg = '';
  1324. for (var trial in pgzp().trials) {
  1325. if (pgzp().trials.hasOwnProperty(trial)) { //block out stuff added by site with Object.prototype
  1326. for (var i=0; i<allNextLinks.length; i++) {
  1327. allNextLinks[i].addScore(trial, pgzp().trials[trial].doScore(allNextLinks[i]));
  1328. if (pgzp().debug) debugMsg += "\nScore " + trial + " " + allNextLinks[i].text + ": " + allNextLinks[i].getScore(trial);
  1329. //remove any links which scored 0 on containing a keyword - do it here so we don't have to continue scoring links we know are bad
  1330. if (trial == 'contains_next_syn' && allNextLinks[i].getScore('contains_next_syn') <= 0) {
  1331. allNextLinks.splice(i, 1);
  1332. i--;
  1333. }
  1334. }
  1335. }
  1336. }
  1337. // pgzp().log(debugMsg);
  1338. }
  1339.  
  1340. //normalize scores from 1-100
  1341. PageZipper.prototype.normalizeLinks = function(allLinks) {
  1342. for (var trial in pgzp().trials) {
  1343. //block out stuff added by site with Object.prototype, trials not meant to be normailzed
  1344. if (pgzp().trials.hasOwnProperty(trial) && !pgzp().trials[trial].noNormailization) {
  1345. pgzp().normalizeTrialSet(trial, allLinks);
  1346. }
  1347. }
  1348. }
  1349.  
  1350. //takes a trial name, normalizes all scores to between 0 and 100
  1351. PageZipper.prototype.normalizeTrialSet = function(trialName, allLinks) {
  1352. //get highest and lowest scores
  1353. var highest, lowest = 0; //add zero so we don't normalize to 0 and 100 for urls which are 1 char apart
  1354. for (var i=0; i<allLinks.length; i++) {
  1355. var score = allLinks[i].getScore(trialName);
  1356. if (highest == null || score > highest) highest = score;
  1357. if (lowest == null || score < lowest) lowest = score;
  1358. }
  1359.  
  1360. //now normalize
  1361. if (pgzp().debug) var debugMsg = 'Normalizing Trial Set: ' + trialName;
  1362. var curve = (highest == lowest) ? 0 : (100 / (highest - lowest));
  1363. for (var i=0; i<allLinks.length; i++) {
  1364. var score = allLinks[i].getScore(trialName);
  1365. var nScore = Math.floor((score - lowest) * curve);
  1366. allLinks[i].addScore(trialName, nScore, true);
  1367. if (pgzp().debug) debugMsg += "\nNScore " + i + ": " + allLinks[i].text + ": score: " + score + " curve: " + curve + " higest: " + highest + " lowest: " + lowest + " nscore: " + nScore;
  1368. }
  1369. //pgzp().log(debugMsg);
  1370. }
  1371.  
  1372. //calculate total score
  1373. PageZipper.prototype.getHighestTotalScore = function(allNextLinks) {
  1374. var highestScoringLink = null;
  1375. for (var i=0; i<allNextLinks.length; i++) {
  1376. var score = allNextLinks[i].calculateTotalScore();
  1377. if (highestScoringLink == null || score >= highestScoringLink.finalScore) {
  1378. highestScoringLink = allNextLinks[i];
  1379. }
  1380. }
  1381.  
  1382. if (pgzp().debug) {
  1383. var debugMsg = 'Final Score ' + allNextLinks.length;
  1384. allNextLinks.sort(function (a, b) {
  1385. return b.finalScore - a.finalScore;
  1386. });
  1387. for (i=0; i<allNextLinks.length; i++) {
  1388. debugMsg += "\n" + allNextLinks[i].finalScore + ": " + allNextLinks[i].text + ": " + allNextLinks[i].url;
  1389. }
  1390. // pgzp().log(debugMsg);
  1391. }
  1392.  
  1393. return highestScoringLink;
  1394. }
  1395.  
  1396. PageZipper.prototype.getAllNextLinks = function(body) {
  1397. var allNextLinks = [];
  1398. var links = body.getElementsByTagName("a"); //get all the links in the page
  1399.  
  1400. var pageUrl = pgzp().getUrlWOutAnchors( pgzp().pages[ pgzp().pages.length-1 ].url );
  1401. for (var i=0; i<links.length; i++) {
  1402. //ignore all links which point to a different domain than the existing domain
  1403. //pgzp().log("currdomain: " + pgzp().currDomain + " currLink: " + pgzp().getDomain(links[i].href) + " full Link: " + links[i].href + " relative: " + links[i].getAttribute("href"));
  1404. if (
  1405. links[i].href &&
  1406. pgzp().getDomain(links[i].href) == pgzp().currDomain && //link points to this domain
  1407. (links[i].href.indexOf("#") < 0 || pageUrl != pgzp().getUrlWOutAnchors(links[i].href)) //avoid links to an anchor in current page, but include normal links curr page
  1408. ) {
  1409. pgzp().addLinkComponents(links[i], allNextLinks, pgzp().contains(pgzp().url_list, links[i].href)); //mark links we've already loaded
  1410. }
  1411. }
  1412. //pgzp().logList(links, "All Links", "#{o.text}\t#{o.link}");
  1413. return allNextLinks;
  1414. }
  1415.  
  1416. //returns an array of all NextLink texts that could be derived from this link
  1417. PageZipper.prototype.addLinkComponents = function(link, allNextLinks, alreadyLoaded) {
  1418. var NextLink = pgzp().NextLink;
  1419. var search = function(rootNode) {
  1420. for (var i=0; i<rootNode.childNodes.length; i++) {
  1421. var curr = rootNode.childNodes[i];
  1422.  
  1423. //check if this node is useful
  1424. if (curr.nodeType == Node.TEXT_NODE && curr.nodeValue && pgzp().jq.trim(curr.nodeValue).length > 0) {
  1425. var nl = new NextLink(curr.nodeValue, link, alreadyLoaded);
  1426. nl.isVisibleText = true;
  1427. allNextLinks.push(nl);
  1428. //check for image link
  1429. } else if (curr.nodeType == Node.ELEMENT_NODE && curr.tagName.toLowerCase() == "img") {
  1430. if (curr.alt) allNextLinks.push(new NextLink(curr.alt, link, alreadyLoaded));
  1431. if (curr.title) allNextLinks.push(new NextLink(curr.title, link, alreadyLoaded));
  1432. if (curr.src) allNextLinks.push(new NextLink(curr.src, link, alreadyLoaded, false));
  1433. } else {
  1434. //continue
  1435. search(curr);
  1436. }
  1437. }
  1438. }
  1439.  
  1440. if (link.title) allNextLinks.push(new NextLink(link.title, link));
  1441. if (link.alt) allNextLinks.push(new NextLink(link.alt, link));
  1442. search(link);
  1443. }
  1444.  
  1445.  
  1446. //---------------------------------- Page Bar ---------------------------------------
  1447.  
  1448. //determine the current page number from a list of page numbers on the page ie. 1 2 3 4 5
  1449. //returns [page #, confidence]
  1450. PageZipper.prototype.getCurrentPageNumberFromPageBar = function(allNextLinks) {
  1451. var allSequences = [], i = 0, currSeq = [], currNextLink, pageBar, pageBarScore = 0, pageNum, tmpPageBarScore;
  1452. var currPageUrl = pgzp().pages[ pgzp().pages.length-1 ].url;
  1453.  
  1454. //first find all consecutive numerical links, put them in arrays
  1455. for (i=0; i<allNextLinks.length; i++) {
  1456. currNextLink = allNextLinks[i];
  1457. if (currNextLink.isVisibleText) { //only want text which actually appears on the page (one link may have multiple entries in allNextLinks)
  1458. if (pgzp().isNumber(currNextLink.text)) {
  1459. pageNum = parseInt(currNextLink.text, 10);
  1460. if (pageNum >= 0 && pageNum < 1000) {
  1461. currNextLink.pageNum = pageNum;
  1462. currSeq.push(currNextLink);
  1463. }
  1464. } else {
  1465. if (currSeq.length > 0) {
  1466. allSequences.push(currSeq);
  1467. currSeq = [];
  1468. }
  1469. }
  1470. }
  1471. }
  1472. if (currSeq.length > 0) allSequences.push(currSeq);
  1473.  
  1474. //now find the sequence numerical links most likely to be the page bar
  1475. for (i=0; i<allSequences.length; i++) {
  1476. tmpPageBarScore = pgzp().__scorePageBar(allSequences[i]);
  1477. if (tmpPageBarScore >= pageBarScore) {
  1478. pageBarScore = tmpPageBarScore;
  1479. pageBar = allSequences[i];
  1480. }
  1481. }
  1482.  
  1483. if (!pageBar) return [-1, 0]; //no page bar on this page
  1484.  
  1485. //sort pageBar lowest to highest
  1486. pageBar.sort( function(a,b){
  1487. return a.pageNum - b.pageNum;
  1488. });
  1489. // pgzp().logList(pageBar, "indexes ordered by size", "#{o.pageNum}\t#{o.text}");
  1490.  
  1491. //mark pageBar for later
  1492. for (i=0; i<pageBar.length; i++) pageBar[i].isPageBar = true;
  1493.  
  1494. //some page bars include links for the current page- ex. 1 2 3 4 where 1 is a link which is highlighted
  1495. for (i=0; i<pageBar.length; i++) {
  1496. if (pageBar[i].url == currPageUrl) {
  1497. return [pageBar[i].pageNum, 120];
  1498. }
  1499. }
  1500.  
  1501. //there are 3 possibilities
  1502.  
  1503. //curr page is in the middle - detect by finding missing page
  1504. if (pageBar.length >= 2) {
  1505. var currPageNum, prevPageNum = pageBar[0].pageNum;
  1506. for (i=1; i<pageBar.length; i++) {
  1507. currPageNum = pageBar[i].pageNum;
  1508.  
  1509. if (Math.abs(currPageNum - prevPageNum) == 2) {
  1510. //currPage should not have been visited yet - it is the next page.
  1511. //check this to avoid getting tripped up by bad page bars - ex. 1, 2, 3, 5, 6, 8, 9, 12, 13, 14
  1512. //pgzp().log("currNextPage " + currPageNum + " url: " + pageBar[i].url + " visited previously: " + pgzp().contains(pgzp().url_list, pageBar[i].url));
  1513. if (!pgzp().contains(pgzp().url_list, pageBar[i].url)) {
  1514. return [currPageNum - 1, 120];
  1515. }
  1516. } else {
  1517. prevPageNum = currPageNum;
  1518. }
  1519. }
  1520. }
  1521.  
  1522. //curr page is at beginning - detect if first # in sequence is 2 or 1 (page bar starts at 1 or 0)
  1523. if (pageBar[0].pageNum == 2) return [1, 40];
  1524. // if (pageBar[0].pageNum == 1) return [0, 10];
  1525.  
  1526. //curr page is last page
  1527. return [pageBar[pageBar.length-1].pageNum, 30];
  1528. }
  1529.  
  1530. //score page bar
  1531. PageZipper.prototype.__scorePageBar = function(pageBar) {
  1532. var similarityScore = pgzp().trials['url_similarity'].doScore(pageBar[0]);
  1533. var totalScore = pageBar.length + (similarityScore / 20);
  1534. // pgzp().log("page bar length: " + pageBar.length + " sim score: " + similarityScore + " total score: " + totalScore);
  1535. return totalScore;
  1536. }
  1537.  
  1538. //if multiple links have the same text but point to different urls, they are not next links
  1539. //make an array of all text on how many unique urls they point to
  1540. PageZipper.prototype.indexDuplicateLinks = function(allNextLinks) {
  1541. var textIndex = {}; //{text, [urls]}
  1542. var currLink;
  1543. for (var i=0; i<allNextLinks.length; i++) {
  1544. currLink = allNextLinks[i];
  1545. if (textIndex[currLink.text]) {
  1546. if (!pgzp().contains(textIndex[currLink.text], currLink.url)) {
  1547. textIndex[currLink.text].push(currLink.url);
  1548. }
  1549. } else {
  1550. textIndex[currLink.text] = [currLink.url];
  1551. }
  1552. }
  1553. return textIndex;
  1554. }
  1555.  
  1556. /*------------------------- Load Page In Ajax ----------------------*/
  1557. function PageZipperAjax() {
  1558.  
  1559. /*----- Add New Page -----*/
  1560.  
  1561. //takes a url, returns a div containing the body content of the page at url
  1562. this.loadPage = function(url) {
  1563. //load page
  1564. pgzp().jq.ajax({url: url,
  1565. dataType: 'html',
  1566. success: function(data){
  1567. //try to get only the body, but use the entire doc if we cant locate it
  1568. var results = data.match(/<body.*?>([\w\W]*?)<\/body>/i);
  1569. data = (results && results.length >= 2) ? results[1] : data;
  1570. //remove all js to prevent pgzp.doc.write() from messing us up!
  1571. //data = data.replace(/<script[\w\W]*?>[\w\W]*?<\/script>/ig, '').replace(/<script[\w\W]*?\/>/ig, '').replace(/<noscript>([\w\W]*?)<\/noscript>/ig, "$1");
  1572. //pgzp().log("body: " + data);
  1573. pgzp().ajax.processPageAdd(url, data);
  1574. }
  1575. });
  1576. }
  1577.  
  1578. this.processPageAdd = function(url, nextPageData) {
  1579. var nextPage = pgzp().ajax.buildPageFromData(url, nextPageData);
  1580. pgzp().pages.push(nextPage);
  1581. pgzp().url_list.push( nextPage.url ); //track urls we've already loaded, so they don't get loaded again
  1582. pgzp().ajax.copyPage(nextPage.elemContent);
  1583. pgzp().ajax.removeAbsolutePositioning(nextPage.elemContent);
  1584. pgzp().menuIncrementPagesLoaded();
  1585. nextPage.nextLinkObj = pgzp().getNextLink(nextPage.elemContent); //very slow- do this after the page has been loaded
  1586. pgzp().is_loading_page = false;
  1587.  
  1588. //make sure that the page load is working - if the doc height hasn't increased, switch to compat mode
  1589. if (pgzp().pages.length >= 3) {
  1590. var second_page = pgzp().jq( pgzp().pages[1].elemContent );
  1591. var last_page = pgzp().jq( pgzp().pages[pgzp().pages.length-1].elemContent );
  1592. if (last_page.offset().top <= second_page.offset().top) {
  1593. pgzp().toggleCompatMode();
  1594. }
  1595. }
  1596.  
  1597. pgzp().mainBlock(); //continue the loop
  1598. }
  1599.  
  1600. this.buildPageFromData = function(url, data) {
  1601. var page = pgzp().doc.createElement("div");
  1602. page.id = "pgzp_page" + pgzp().pages.length;
  1603. page.style.clear = 'both';
  1604. page.innerHTML = data;
  1605. return pgzp().buildPage(url, page);
  1606. }
  1607.  
  1608. /*----- Utils -----*/
  1609. this.copyPage = function(body) {
  1610. pgzp().doc.body.appendChild(body);
  1611. }
  1612.  
  1613. //switch position: absolute with position: relative
  1614. this.removeAbsolutePositioning = function(body) {
  1615. pgzp().jq( pgzp().doc.body ).children().each(function() {
  1616. if (pgzp().jq(this).css("position") == "absolute") pgzp().jq(this).css("position", "static");
  1617. });
  1618. }
  1619. }
  1620.  
  1621. /*------------------------- Load Page With Iframe ----------------------*/
  1622. function PageZipperIframe() {
  1623.  
  1624. //takes a url, returns a div containing the body content of the page at url
  1625. this.loadPage = function(url) {
  1626. var ifrspan = pgzp().doc.createElement('span');
  1627. //ffextensions really do not like onload - call it in some weird dimension where pgzp() is not defined
  1628. var onloadstr = pgzp().loader_type == "ffextension" ? "" : "onload=\"pgzp().iframe.processPageAddComplete('pgzp_page"+pgzp().pages.length+"')\"";
  1629.  
  1630. ifrspan.innerHTML = "<iframe id='pgzp_page"+pgzp().pages.length+"' class='pgzp_page_added' "+onloadstr+" style='clear: both; display: block; border-width: 0; overflow: hidden;' scroll='no' frameBorder='0'></iframe>";
  1631. var ifr = ifrspan.childNodes[0];
  1632. pgzp().jq(pgzp().doc).find("#pgzp_iframe_placeholder").append(ifr);
  1633. ifr.src = url;
  1634. pgzp().runOnIframeLoad(ifr, pgzp().iframe.processPageAdd);
  1635. ifr.style.width = (pgzp().doc.body.offsetWidth -5) + 'px';
  1636. }
  1637.  
  1638. //Call as soon as Dom is ready
  1639. this.processPageAdd = function() {
  1640. var iframe = pgzp().jq(pgzp().doc).find(".pgzp_page_added").last()[0]; //get the last iframe loaded
  1641. var nextPage = pgzp().buildPage(iframe.src, iframe);
  1642. pgzp().pages.push(nextPage);
  1643. pgzp().url_list.push( nextPage.url ); //track urls we've already loaded, so they don't get loaded again
  1644. pgzp().iframe.setIFrameHeight(nextPage);
  1645. pgzp().menuIncrementPagesLoaded();
  1646. pgzp().jq(nextPage.ifrDoc).bind("keydown", this.keyDown);
  1647. pgzp().jq(nextPage.ifrDoc).bind("keyup", this.keyUp);
  1648. nextPage.nextLinkObj = pgzp().getNextLink( nextPage.elemContent ); //very slow- do this after the page has been loaded
  1649. pgzp().is_loading_page = false;
  1650. }
  1651.  
  1652. //Call once everything is fully loaded
  1653. this.processPageAddComplete = function(ifrId) {
  1654. var page = pgzp().iframe.getPageById(ifrId); //sometimes this is called before the iframe is loaded
  1655. if (page) pgzp().iframe.setIFrameHeight(page);
  1656. }
  1657.  
  1658. this.setIFrameHeight = function(page) {
  1659. page.inPageElem.style.height = pgzp().getDocumentHeight(page.ifrDoc) + 'px';
  1660. }
  1661.  
  1662. //check for abs pos and abs position the iframe if necessary
  1663. this.setAbsolutePositioning = function(page) {
  1664. var origDocH, ifr = page.inPageElem;
  1665.  
  1666. //get the element before this one in doc.body
  1667. var iframes = pgzp().jq(pgzp().doc).find(".pgzp_page_added");
  1668. if (iframes.length >= 2) {
  1669. origDocH = iframes[iframes.length-2].pgzpDocHeightAfterAdd;
  1670. } else {
  1671. origDocH = pgzp().doc.body.pgzpDocHeightAfterAdd;
  1672. }
  1673.  
  1674. var pos = pgzp().findPos(ifr)
  1675. if (pos.y < Math.max(origDocH-50, 10)) {
  1676. ifr.style.position = "absolute";
  1677. ifr.style.top = origDocH + "px";
  1678. ifr.style.left = "0px";
  1679. }
  1680. }
  1681.  
  1682. this.getPageById = function(id) {
  1683. for (var i=0; i<pgzp().pages.length; i++) {
  1684. if (pgzp().pages[i].ifrId && pgzp().pages[i].ifrId == id) {
  1685. return pgzp().pages[i]
  1686. }
  1687. }
  1688. return null;
  1689. }
  1690. }
  1691.  
  1692. /* Determine if the iframe dom is ready
  1693. * we cant use onload b/c that waits until every single file in the html page is loaded - takes forever
  1694. * amazingly, I couldn't find a good solution for this problem on the net
  1695. * this solution is pretty basic, but seems to work
  1696. */
  1697. PageZipper.prototype.runOnIframeLoad = function(iframeElem, callback) {
  1698. pgzp()._ril_ifr = iframeElem;
  1699. pgzp()._ril_callback = callback;
  1700. pgzp()._ril_int = pgzp().win.setInterval(pgzp()._runOnIframeLoad2, 50); //check every 50msec
  1701. }
  1702. PageZipper.prototype._runOnIframeLoad2 = function() {
  1703. var ifrDoc = pgzp()._ril_ifr.contentWindow.document, validReadyStates = /loaded|interactive|complete/;
  1704.  
  1705. //IE seems to not handle interactive state properly - dom is still being created when readyState = interactive
  1706. if (pgzp().jq.browser.msie) {
  1707. validReadyStates = /loaded|complete/
  1708. }
  1709.  
  1710. //pgzp().log("readyState: " + ifrDoc.readyState);
  1711. if (
  1712. ifrDoc.body && //checking for body b/c chrome has a bizarre habit of starting in readyState=complete and then switch to readyState=loading
  1713. ifrDoc.body.childNodes.length > 0 &&
  1714. validReadyStates.test(ifrDoc.readyState)
  1715. ) {
  1716. //Dom has loaded!
  1717. pgzp().win.clearInterval(pgzp()._ril_int);
  1718. pgzp()._ril_callback();
  1719. }
  1720. }
  1721.  
  1722. PageZipper.prototype.buildPage = function(url, elemContent) {
  1723. var page = {
  1724. 'url': url,
  1725. 'elemContent': elemContent, //dom node containing this page's content
  1726. 'nextLinkObj': null, //NextLink obj
  1727. 'posterImgs': null,
  1728. 'inPageElem': elemContent
  1729. };
  1730.  
  1731. //iframe only
  1732. if (elemContent.tagName.toLowerCase() == "iframe") {
  1733. page.ifrWin = elemContent.contentWindow;
  1734. page.ifrDoc = elemContent.contentWindow.document;
  1735. //page.inPageElem = elemContent; //dom elem in base page containing iframe (body on 1st page) - used by findPos
  1736. page.elemContent = page.ifrDoc.body;
  1737. page.ifrDoc.pgzp_iframe_id = elemContent.id;
  1738. page.ifrId = elemContent.id;
  1739. }
  1740.  
  1741. return page;
  1742. }
  1743.  
  1744.  
  1745.  
  1746. //takes a url, returns a div containing the body content of the page at url
  1747. PageZipper.prototype.loadPage = function(url) {
  1748. pgzp().in_compat_mode ? pgzp().iframe.loadPage(url) : pgzp().ajax.loadPage(url);
  1749. }
  1750.  
  1751. PageZipper.prototype.addExistingPage = function(url, body) {
  1752.  
  1753. var nextPage = pgzp().buildPage(url, body);
  1754.  
  1755. if (pgzp().in_compat_mode) {
  1756. pgzp().addIframePlaceholder();
  1757. } else {
  1758. pgzp().ajax.removeAbsolutePositioning(nextPage.elemContent);
  1759. }
  1760.  
  1761. pgzp().pages.push(nextPage);
  1762.  
  1763. //must set this here, else will try to get largest image on all of pgzp.doc.body, which may be multiple pages by the time it is called
  1764. nextPage.posterImgs = pgzp().getPosterImagesOnPage(nextPage.elemContent);
  1765.  
  1766. //very slow- do this after the page has been loaded
  1767. nextPage.nextLinkObj = pgzp().getNextLink(nextPage.elemContent);
  1768.  
  1769. return nextPage;
  1770. }
  1771.  
  1772. PageZipper.prototype.addIframePlaceholder = function() {
  1773. var placeholder = pgzp().jq("<div/>").attr('id', 'pgzp_iframe_placeholder').css({position: 'absolute', top: pgzp().jq(document).height()+'px', left: '0px'});
  1774. pgzp().jq(pgzp().doc.body).append(placeholder);
  1775. }
  1776.  
  1777. /*-------------------------------- Utilities ----------------------*/
  1778.  
  1779. PageZipper.prototype.startsWith = function(pattern, str) {
  1780. return str.indexOf(pattern) === 0;
  1781. }
  1782. PageZipper.prototype.endsWith = function(pattern, str) {
  1783. var d = str.length - pattern.length;
  1784. return d >= 0 && str.lastIndexOf(pattern) === d;
  1785. }
  1786.  
  1787. PageZipper.prototype.log = function(html, override) {
  1788. if (pgzp().debug || override) {
  1789. if (pgzp().win["console"]) {
  1790. pgzp().win.console.log(html);
  1791. return;
  1792. }
  1793.  
  1794. var div = pgzp().doc.createElement("textarea");
  1795. pgzp().doc.body.appendChild(div);
  1796. div.value = html;
  1797.  
  1798. }
  1799. }
  1800.  
  1801. //handles log strings in form "msg: #{o.src}" where o is the object in the list
  1802. PageZipper.prototype.logList = function(list, initialStr, listStr) {
  1803. var interpolate = function (s, o) {
  1804. return s.replace(/\#\{([^}]+)\}/g, function (match, exp) {
  1805. return eval(exp);
  1806. });
  1807. }
  1808.  
  1809. for (var i=0; i<list.length; i++) {
  1810. initialStr += "\n" + interpolate(listStr, list[i]);
  1811. }
  1812. pgzp().log(initialStr);
  1813. }
  1814.  
  1815. PageZipper.prototype.noBubble = function(event) {
  1816. if (event) {
  1817. event.cancelBubble = true; //IE
  1818. if (event.stopPropagation)
  1819. event.stopPropagation(); //Everyone else
  1820. event.returnValue = false; //required by stupid browsers which do not respect cancelling bubbling on arrow keys - IE and Safari
  1821. }
  1822. return event;
  1823. }
  1824.  
  1825. //Find the length of page the user has left to read, in px
  1826. PageZipper.prototype.getRemaningBufferSize = function() {
  1827. //pgzp().log("jtDocH: " + pgzp.screen.getDocumentHeight() + " jtScroll: " + pgzp.screen.getScrollTop() + " jtViewport: " + pgzp.screen.getViewportHeight());
  1828. var left = pgzp().screen.getDocumentHeight() - pgzp().screen.getScrollTop() - pgzp().screen.getViewportHeight();
  1829. if (left < 0) return 0;
  1830. return Math.floor(left);
  1831. }
  1832.  
  1833. //http://www.quirksmode.org/js/findpos.html
  1834. PageZipper.prototype.findPos = function(obj) {
  1835. var curleft = 0, curtop = 0, objOrig = obj;
  1836. if (obj.offsetParent) {
  1837. do {
  1838. curleft += obj.offsetLeft || parseInt(obj.style.left.replace("px", ""), 10) || 0;
  1839. curtop += obj.offsetTop || parseInt(obj.style.top.replace("px", ""), 10) || 0;
  1840. } while (obj = obj.offsetParent);
  1841. }
  1842.  
  1843. //if obj is inside an iframe, curtop will be the pos inside the iframe
  1844. //add the y of the iframe to make currtop absolute
  1845. if (objOrig.ownerDocument != pgzp().win.parent.document) {
  1846. //get iframe
  1847. var ifr = pgzp().doc.getElementById( objOrig.ownerDocument.pgzp_iframe_id );
  1848. if (ifr) {
  1849. var ifrPos = pgzp().findPos(ifr);
  1850. curleft += ifrPos.x;
  1851. curtop += ifrPos.y;
  1852. }
  1853. }
  1854.  
  1855. return {"x": curleft, "y": curtop};
  1856. }
  1857.  
  1858. PageZipper.prototype.getDocumentHeight = function(doc) {
  1859. var body = doc.body, html = doc.documentElement;
  1860. return Math.max( body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight );
  1861. }
  1862.  
  1863. PageZipper.prototype.isNumber = function(str) {
  1864. return str && (typeof(str) == "number" || (typeof(str) == "string" && (str.search(/^\d+$/) >= 0)));
  1865. }
  1866.  
  1867. PageZipper.prototype.getDomain = function(url) {
  1868. if (url.match("http://localhost/")) return "localhost";
  1869.  
  1870. var hna = url.match(/^http[s]?\:\/\/([\S]+?\.\w+)(\/.*)?$/i);
  1871. //absolute url
  1872. if (hna) {
  1873. //remove subdomains if they exist
  1874. var parts = hna[1].split(".");
  1875. if (parts.length > 2)
  1876. return parts[parts.length-2] + "." + parts[parts.length-1];
  1877. return hna[1];
  1878. }
  1879. //javascript
  1880. hna = url.match(/^javascript\:.*$/i);
  1881. if (hna) {
  1882. return null;
  1883. }
  1884. //relative link
  1885. return pgzp().currDomain;
  1886. }
  1887.  
  1888. /* Removes the anchor part of urls */
  1889. PageZipper.prototype.getUrlWOutAnchors = function(url) {
  1890. if (url.indexOf("#") >= 0) {
  1891. var results = url.match(/(.*?)#.*/);
  1892. if (results.length > 0) return results[1];
  1893. }
  1894. return url;
  1895. }
  1896.  
  1897. PageZipper.prototype.convertToArray = function(a) {
  1898. var b = [];
  1899. for (var i=0; i<a.length; i++) b.push(a[i]);
  1900. return b;
  1901. }
  1902.  
  1903. /* Remove all elements from the given array on which filter returns true */
  1904. PageZipper.prototype.filter = function(arr, filter) {
  1905. for (var i=0; i<arr.length; i++) {
  1906. if (filter(arr[i])) {
  1907. arr.splice(i, 1);
  1908. i--;
  1909. }
  1910. }
  1911. }
  1912.  
  1913. PageZipper.prototype.depthFirstRecursion = function(root, callback) {
  1914. for (var i=0; i<root.childNodes.length; i++) {
  1915. //for now only include visible content
  1916. if (root.childNodes[i].nodeType == 3 ||
  1917. (root.childNodes[i].nodeType == 1 && pgzp().css.getStyle(root.childNodes[i], "display") != "none")) {
  1918. pgzp().depthFirstRecursion(root.childNodes[i], callback);
  1919. }
  1920. }
  1921. callback(root);
  1922. }
  1923.  
  1924. PageZipper.prototype.contains = function(ar, obj) {
  1925. if(Array.indexOf){
  1926. return ar.indexOf(obj) != -1;
  1927. } else {
  1928. //stupid IE!!!
  1929. for(var i=0; i<ar.length; i++){
  1930. if(ar[i]==obj){
  1931. return true;
  1932. }
  1933. }
  1934. return false;
  1935. }
  1936. }
  1937.  
  1938. PageZipper.prototype.getContentType = function() {
  1939. var metas = pgzp().doc.getElementsByTagName("head")[0].getElementsByTagName("meta");
  1940. for (var i=0; i<metas.length; i++) {
  1941. if (metas[i].getAttribute("http-equiv") && metas[i].getAttribute("http-equiv").toLowerCase() == "content-type" && metas[i].getAttribute("content"))
  1942. return metas[i].getAttribute("content");
  1943. }
  1944. return null;
  1945. }
  1946.  
  1947. /* Is word an actual word, or is it part of something else
  1948. * ie. isStandaloneWord('older', 'more older entries') => true
  1949. * isStandaloneWord('older', 'update folder settings') => false
  1950. */
  1951. PageZipper.prototype.isStandaloneWord = function(word, text, humanReadable) {
  1952. var delimiter = humanReadable ? "\\s" : "[^a-zA-Z]" ;
  1953. return new RegExp("^(.*" + delimiter + "+)?" + word + "(" + delimiter + "+.*)?$", "i").test(text);
  1954. }
  1955.  
  1956. /* Given a string and a position (0 based), find the full # at that position.
  1957. * ex. ('ab324', 3) returns 324
  1958. * return -1 if no # is found
  1959. */
  1960. PageZipper.prototype.getNumberAtPos = function(str, pos) {
  1961. var currNum = "" + str.charAt(pos);
  1962. var currPos = pos - 1;
  1963.  
  1964. //walk forward
  1965. while(currPos >= 0 && pgzp().isNumber(str.charAt(currPos))) {
  1966. currNum = str.charAt(currPos) + currNum;
  1967. currPos--;
  1968. }
  1969.  
  1970. //walk backward
  1971. currPos = pos + 1;
  1972. while(currPos < str.length && pgzp().isNumber(str.charAt(currPos))) {
  1973. currNum += str.charAt(currPos);
  1974. currPos++;
  1975. }
  1976.  
  1977. return pgzp().isNumber(currNum) ? parseInt(currNum, 10) : -1;
  1978. }
  1979.  
  1980. /*------------------------- Load Bookmarklet ----------------------*/
  1981.  
  1982. /* Get the local copies of all our important variables
  1983. * Required because in FF extension 'window' points to the browser dom window - is global across all tabs
  1984. * window.content is the tab scope */
  1985. function pgzp() {
  1986. return window.currPgzp;
  1987. }
  1988.  
  1989. /*------------------------- Bookmarklet ----------------------*/
  1990.  
  1991. function _pgzpInitBookmarklet() {
  1992. window.currPgzp = new PageZipper();
  1993. pgzp().win = window;
  1994. pgzp().doc = window.document;
  1995. pgzp().loader_type = "bookmarklet";
  1996. //pgzp().media_path = "http://127.0.0.1/pgzp/src/ffextension/skin/";
  1997. pgzp().media_path = "http://www.printwhatyoulike.com/static/pagezipper/ui/";
  1998. pgzp().loadPageZipper();
  1999. }
  2000.  
  2001. function _pgzpToggleBookmarklet() {
  2002. if (pgzp().is_running) {
  2003. pgzp().stopPageZipper();
  2004. } else {
  2005. pgzp().runPageZipper();
  2006. }
  2007. }
  2008.  
  2009. //Start!
  2010. _pgzpInitBookmarklet();
  2011. _pgzpToggleBookmarklet();
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