includes/clientside/static/sliders.js
author Dan
Sun, 04 May 2008 21:57:48 -0400
changeset 541 acb7e23b6ffa
parent 362 02d315d1cc58
child 582 a38876c0793c
permissions -rw-r--r--
Massive commit with various changes. Added user ranks system (no admin interface yet) and ability for users to have custom user titles. Made cron framework accept fractions of hours through floating-point intervals. Modifed ACL editor to use miniPrompt framework for close confirmation box. Made avatar system use a special page as opposed to fetching the files directly for caching reasons.
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// Sliding drawers on the sidebar
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// our global vars
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// the delay between the slide in/out, and a little inertia
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var sliders_initted = false;
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function initSliders()
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{
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  sliders_initted = true;
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  if ( KILL_SWITCH )
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    return false;
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    // detect whether the user has ie or not, how we get the height is different 
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    var useragent = navigator.userAgent.toLowerCase();
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    var ie = ((useragent.indexOf('msie') != -1) && (useragent.indexOf('opera') == -1) && (useragent.indexOf('webtv') == -1));
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    if(ie)
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      return;
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    var divs = getElementsByClassName(document, "div", "slideblock");
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    for(var i=0; i<divs.length; i++)
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    {
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        // set a unique id for this slider
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        divs[i].metaid = i;
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        // get the original height
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        var baseheight = (ie) ? divs[i].offsetHeight + "px" : document.defaultView.getComputedStyle(divs[i], null).getPropertyValue('height', null);
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        // use cookies to toggle whether to display it or not
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        var id = ( divs[i].parentNode.firstChild.nextSibling ) ? divs[i].parentNode.firstChild.nextSibling.firstChild : divs[i].parentNode.parentNode.firstChild.nextSibling.firstChild;
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        if ( !id.nextSibling )
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          return;
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        if(id.innerHTML || id.nextSibling.length < 1) id = id.innerHTML;
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        else id = id.nextSibling.innerHTML; // Gecko fix
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        var cookieName = 'mdgSliderState_'+i; // id.replace(' ', '_');
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        //alert(cookieName + ': ' + readCookie(cookieName));
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        if(readCookie(cookieName)=='closed')
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        {
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          divs[i].style.display = "none";
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        }
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        else
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        {
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          divs[i].style.display = "block";
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        }
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        // "save" our div height, because once it's display is set to none we can't get the original height again
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        var d = new div();
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        d.el = divs[i];
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        d.ht = baseheight.substring(0, baseheight.indexOf("p"));
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        // store our saved version
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        divheights[i] = d;        
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    }
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}
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// this is one of our divs, it just has a DOM reference to the element and the original height
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function div(_el, _ht)
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{
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    this.el = _el;
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    this.ht = _ht;
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}
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function toggle(t)
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{
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  if(IE)
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    return false;
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  if ( KILL_SWITCH )
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    return false;
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  if ( !sliders_initted )
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    initSliders();
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    // reset our inertia base and interval
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    inertiabase = inertiabaseoriginal;
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    clearInterval(slideinterval);
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    // get our block
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    block = t.parentNode.nextSibling;
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    // for mozilla, it doesn't like whitespace between elements
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    if(block.className == undefined)
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        block = t.parentNode.nextSibling.nextSibling;
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    if(block.style.display == "none")
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    {
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        block.style.display = "block";
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        block.style.height = "1px";
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        // our goal and current height
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        targetheight = divheight(block);
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        heightnow = 1;
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        // remember toggled state
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        cookieName = 'mdgSliderState_'+block.metaid; // t.innerHTML.replace(' ', '_');
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        createCookie(cookieName, 'open', 3650);
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        // our interval
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        slideinterval = setInterval(slideout, slideintervalinc);
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    }
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    else
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    {
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        // our goal and current height
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        targetheight = 1;
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        heightnow = divheight(block);
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        // remember toggled state
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        cookieName = 'mdgSliderState_'+block.metaid; // t.innerHTML.replace(' ', '_');
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        createCookie(cookieName, 'closed', 3650);
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        // our interval
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        slideinterval = setInterval(slidein, slideintervalinc);
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    }
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}
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// this is our slidein function the interval uses, it keeps subtracting
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// from the height till it's 1px then it hides it
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function slidein()
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{
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    if(heightnow > targetheight)
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    {
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        // reduce the height by intertiabase * inertiainc
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        heightnow -= inertiabase;
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        // increase the intertiabase by the amount to keep it changing
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        inertiabase += inertiainc;
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        // it's possible to exceed the height we want so we use a ternary - (condition) ? when true : when false;
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        block.style.height = (heightnow > 1) ? heightnow + "px" : targetheight + "px";
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    }
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    else
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    {
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        // finished, so hide the div properly and kill the interval
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        clearInterval(slideinterval);
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        block.style.display = "none";
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    }
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}
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// this is the function our slideout interval uses, it keeps adding
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// to the height till it's fully displayed
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function slideout()
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{
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    block.style.display = 'block';
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    if(heightnow < targetheight)
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    {
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        // increases the height by the inertia stuff
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        heightnow += inertiabase;
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        // increase the inertia stuff
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        inertiabase += inertiainc;
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        // it's possible to exceed the height we want so we use a ternary - (condition) ? when true : when false;
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        block.style.height = (heightnow < targetheight) ? heightnow + "px" : targetheight + "px";
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    }
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    else
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    {
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        // finished, so make sure the height is what it's meant to be (inertia can make it off a little)
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        // then kill the interval
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        clearInterval(slideinterval);
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        block.style.height = targetheight + "px";
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    }
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}
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// returns the height of the div from our array of such things
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function divheight(d)
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{
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    for(var i=0; i<divheights.length; i++)
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    {
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        if(divheights[i].el == d)
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        {
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            return divheights[i].ht;
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        }
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    }
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}
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/*
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    the getElementsByClassName function I pilfered from this guy.  It's
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    a useful function that'll return any/all tags with a specific css class.
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    Written by Jonathan Snook, http://www.snook.ca/jonathan
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    Add-ons by Robert Nyman, http://www.robertnyman.com
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    Modified to match all elements that match the class name plus an integer after the name
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    This is used in Enano to allow sliding sidebar widgets that use their own CSS
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*/
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function getElementsByClassName(oElm, strTagName, strClassName)
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{
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    // first it gets all of the specified tags
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    var arrElements = (strTagName == "*" && document.all) ? document.all : oElm.getElementsByTagName(strTagName);
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    // then it sets up an array that'll hold the results
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    var arrReturnElements = new Array();
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    // some regex stuff you don't need to worry about
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    strClassName = strClassName.replace(/\-/g, "\\-");
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    var oRegExp = new RegExp("(^|\\s)" + strClassName + "([0-9]*)(\\s|$)");
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    var oElement;
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    // now it iterates through the elements it grabbed above
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    for(var i=0; i<arrElements.length; i++)
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    {
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        oElement = arrElements[i];
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        // if the class matches what we're looking for it ads to the results array
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        if(oElement.className.match(oRegExp))
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        {
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            arrReturnElements.push(oElement);
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        }
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    }
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    // then it kicks the results back to us
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    return (arrReturnElements)
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}
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