// ------------------------------------------------------------------- // gAjax RSS Pausing Scroller- By Dynamic Drive, available at: http://www.dynamicdrive.com // Created: Aug 2nd, 2007 Updated: n/a // REQUIRES: gfeedfetcher.js class, available at http://dynamicdrive.com/dynamicindex18/gajaxrssdisplayer.htm // ------------------------------------------------------------------- var gfeedfetcher_loading_image="indicator.gif" //Specify full URL to "loading" image. Overwrites same var from gfeedfetcher.js function gfeedpausescroller(divid, divClass, delay, linktarget){ this.tickerid=divid //ID of outermost scroller div this.delay=parseInt(delay) //Default delay between msg change, in miliseconds. this.mouseoverBol=0 //Boolean to indicate whether mouse is currently over scroller (and pause it if it is) this.hiddendivpointer=1 //index of RSS feed array's entry for hidden div this.itemsperpage=1 //Entries to show per page document.write('
') document.write('
Initializing RSS scroller...
') document.write('') gfeedfetcher.call(this, divid+"unneeded", divClass+"unneeded", linktarget) //inherit properties from "gfeedfetcher" class, but feed it bogus ID/Class, as we won't be using the DIV generated by "gfeedfetcher" document.write('
') this.itemcontainer="
" //default element wrapping around each RSS entry this.feedcontainer.style.display="none" //Hide unneeded div generated after inheriting properties from "gfeedfetcher" class this.feedcontainer=document.getElementById(divid+'1') //overwrite inherited "feedcontainer" to reference the first DIV within scroller container this.tickerdiv=document.getElementById(divid) this.visiblediv=document.getElementById(divid+"1") this.hiddendiv=document.getElementById(divid+"2") this.visibledivtop=parseInt(this.tickerdiv.currentStyle? this.tickerdiv.currentStyle["paddingTop"] : window.getComputedStyle? window.getComputedStyle(this.tickerdiv, "").getPropertyValue("padding-top") : 0) //Determine the "top" boundary of the visible div, factoring in any CSS padding this.tickerdivwidth=this.tickerdiv.currentStyle? parseInt(this.tickerdiv.currentStyle["width"]) : this.tickerdiv.offsetWidth //IE has trouble getting offsetWidth while page is loading, so use global CSS value instead this.tickerdivheight=this.tickerdiv.currentStyle? parseInt(this.tickerdiv.currentStyle["height"])+50 : 0 //IE has trouble getting offsetWidth while page is loading, so use global CSS value instead. "50" accounts for any possible padding skewing things. Variable used by any other browser. } gfeedpausescroller.prototype=new gfeedfetcher //inherit methods from gfeedfetcher class gfeedpausescroller.prototype.constructor=gfeedpausescroller gfeedpausescroller.prototype._displayresult=null //Remove inherited method "_displayresult()" // ------------------------------------------------------------------- // entries_per_page()- Sets the number of RSS entries to display per page (at once) // ------------------------------------------------------------------- gfeedpausescroller.prototype.entries_per_page=function(num){ this.itemsperpage=num } // ------------------------------------------------------------------- // _signaldownloadcomplete()- Signals to the rest of the script when the fetching of all RSS feeds is complete // ------------------------------------------------------------------- gfeedpausescroller.prototype._signaldownloadcomplete=function(){ //overwrite inherited method "_signaldownloadcomplete()" this.feedsfetched+=1 if (this.feedsfetched==this.feedurls.length) //if all feeds fetched this._populateticker(this.feeds) //Populate the two DIVs within scroller with the fetched data } // ------------------------------------------------------------------- // _populateticker()- Pre-populates the two DIVs of the scroller with the 1st and 2nd RSS entries. // ------------------------------------------------------------------- gfeedpausescroller.prototype._populateticker=function(feeds){ gfeedfetcher._sortarray(feeds, this.sortstring) //set width of inner DIVs to outer DIV's width minus padding (padding assumed to be top padding x 2) this.visiblediv.style.width=this.hiddendiv.style.width=parseInt(this.tickerdivwidth)-(this.visibledivtop*2)+"px" this.itemsperpage=(this.itemsperpage>=feeds.length)? 1 : this.itemsperpage //Adjust "itemsperpage" if needed (based on total # of avail entries) var feedslice1=feeds.slice(0, this.itemsperpage) //Get subsection of feed array based on how many entries to show at once this.hiddendivpointer=this.itemsperpage //Set the feed array index of the hidden div accordingly var feedslice2=feeds.slice(this.hiddendivpointer, this.hiddendivpointer+this.itemsperpage) this.visiblediv.innerHTML=formatrssmessage(feedslice1, this.showoptions, this.itemcontainer, this.linktarget) this.hiddendiv.innerHTML=formatrssmessage(feedslice2, this.showoptions, this.itemcontainer, this.linktarget) this._initscroller() } // ------------------------------------------------------------------- // _initscroller()- Initialize the scroller by setting initial positions of the two dinner DIVs, start up down animation // ------------------------------------------------------------------- gfeedpausescroller.prototype._initscroller=function(){ var scrollerinstance=this this.getinline(this.visiblediv, this.hiddendiv) this.hiddendiv.style.visibility="visible" //set width of inner DIVs to outer DIV's width minus padding (padding assumed to be top padding x 2) this.visiblediv.style.width=this.hiddendiv.style.width=parseInt(this.tickerdivwidth)-(this.visibledivtop*2)+"px" this.tickerdiv.onmouseover=function(){scrollerinstance.mouseoverBol=1} this.tickerdiv.onmouseout=function(){scrollerinstance.mouseoverBol=0} if (window.attachEvent) //Clean up loose references in IE window.attachEvent("onunload", function(){scrollerinstance.tickerdiv.onmouseover=scrollerinstance.tickerdiv.onmouseout=null}) setTimeout(function(){scrollerinstance._animateup()}, this.delay) } // ------------------------------------------------------------------- // formatrssmessage()- Global function that formats a RSS entry(s) to the desired components (title, date, description etc) // ------------------------------------------------------------------- function formatrssmessage(feedslice, showoptions, itemcontainer, linktarget){ var rssoutput=(itemcontainer=="
  • ")? "