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references.js
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304 lines (262 loc) · 8.74 KB
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// Declaring variables.
var totalSpanCharacters = 0;
// Load functions that update when the page is scrolled.
function scrollingFunctions()
{
visibleReferences();
visibleContributors();
}
// Functions and start when the page has loaded.
function onloadFunctions()
{
totalSpanChars();
}
// Only show the references for the content that is currently visible.
function visibleReferences()
{
if(!document.getElementById || !document.createElement){return;}
// Variables
var referenceSpanElements = new Array();
var referenceListArray = new Array();
var referenceList = document.getElementById("references").children;
// Make all the references disappear before I make the ones I want visible.
for (var i = 0; i < referenceList.length; i++)
{
if (!referenceList[i].style) {alert("References style not working");}
referenceList[i].style.display = "none";
}
// Find all the span elements that are referenced.
interestingSpans("refid",referenceSpanElements);
// Make the references show for their content that is currently in the screen's viewport.
currentlyVisible(referenceSpanElements,referenceList,"refid");
}
// Only show the contributors for the content that is currently visible.
function visibleContributors()
{
if(!document.getElementById || !document.createElement){return;}
// Variables
var contributorSpanElements = new Array();
if (document.getElementById("referenceList").childNodes.item(1).nodeName == "UL") // Firefox
{
var contributorsList = document.getElementById("referenceList").childNodes.item(1).children;
}
else if (document.getElementById("referenceList").childNodes.item(3).nodeName == "UL") // Safari and Chrome
{
var contributorsList = document.getElementById("referenceList").childNodes.item(3).children;
}
// Make all the contributors disappear before I make the ones I want visible.
for (var i = 0; i < contributorsList.length; i++)
{
if (!contributorsList[i].style) {alert("Contributor style not working");}
contributorsList[i].style.display="none";
}
// Find all the span elements that have contributors.
interestingSpans("conid",contributorSpanElements);
// Make the contributors show for their content that is currently in the screen's viewport.
currentlyVisible(contributorSpanElements,contributorsList,"conid");
}
// Calculate the number of characters in all the spans inside the "document" div.
function totalSpanChars()
{
var allSpans = new Array();
interestingSpans("class",allSpans);
for (i=0;i<allSpans.length;i++)
{
totalSpanCharacters = totalSpanCharacters + allSpans[i].firstChild.length;
}
}
// Find all the span elements that contain the attribute I'm interested in.
function interestingSpans(spanAttribute,theArrayOfSpans)
{
var spans = document.getElementsByTagName("span");
for (i=0;i<spans.length;i++)
{
if(spans[i].hasAttribute (spanAttribute))
{
theArrayOfSpans.push(spans[i]);
}
}
}
// Work out what objects are currently in the screen's viewport.
function currentlyVisible(spanObj,listObj,listObjID)
{
for (i=0;i<spanObj.length;i++)
{
if (
((findPos(spanObj[i]) < window.scrollY)
&&
((findPos(spanObj[i])+spanObj[i].offsetHeight) > window.scrollY))
||
((findPos(spanObj[i]) > window.scrollY)
&&
(findPos(spanObj[i]) < (window.scrollY+document.documentElement.clientHeight)))
)
{
for ( var k = 0; k < listObj.length; k++)
{
if ( listObj.item(k).getAttribute(listObjID) == spanObj[i].getAttribute(listObjID)) // **** Added parentNode / listObj.item(k).getAttribute(listObjID)
{
listObj[k].style.display="";
}
}
}
}
}
// Working out distance of each object from the top of the page.
function findPos(obj)
{
var curtop = 0;
if (obj.offsetParent)
{
do
{
curtop += obj.offsetTop;
}
while (obj = obj.offsetParent);
}
else
{
alert("offsetParent not supported");
}
return curtop;
}
//keep element in view - jQuery - referenceList
(function($)
{
$(document).ready( function()
{
var elementPos = document.getElementById('referenceList');
var elementPosTop = findPos(elementPos); // $('#referenceList').position().top;
$(window).scroll(function()
{
var wintop = $(window).scrollTop(), docheight = $(document).height(), winheight = $(window).height();
//if top of element is in view
if (wintop > elementPosTop)
{
//always in view
$(elementPos).css({ "position":"fixed", "top":"-3em" });
}
else
{
//reset back to normal viewing
$(elementPos).css({ "position":"inherit" });
}
});
});
})(jQuery);
//keep element in view - jQuery - contents
(function($)
{
$(document).ready( function()
{
var elementPos = document.getElementById('contents');
var elementPosTop = findPos(elementPos); // $('#referenceList').position().top;
$(window).scroll(function()
{
var wintop = $(window).scrollTop(), docheight = $(document).height(), winheight = $(window).height();
//if top of element is in view
if (wintop > elementPosTop)
{
//always in view
$(elementPos).css({ "position":"fixed", "top":"-6em", "width":"18%" });
}
else
{
//reset back to normal viewing
$(elementPos).css({ "position":"inherit", "width":"" });
}
});
});
})(jQuery);
// Highlight reference on mouseover of text.
// For References
function refHover(hoverSpan)
{
// Select the span's refID
var hoverSpanRefID = hoverSpan.getAttribute("refid");
// Find all of the references and deal with differing browsers.
if (document.getElementById("referenceList").lastChild.previousSibling.nodeName == "DIV") // Safari and Chrome
{
var theList = document.getElementById("referenceList").lastChild.previousSibling.children;
}
else if (document.getElementById("referenceList").lastChild.nodeName == "DIV") // Firefox
{
var theList = document.getElementById("referenceList").lastChild.children;
}
// Only apply the class to the reference element that has the same refID as the span.
for (var i=0;i<theList.length;i++)
{
if ( hoverSpanRefID == theList[i].getAttribute("refid"))
{
theList[i].setAttribute("class", "refHover");
}
}
}
function refUnhover(hoverSpan)
{
// Select the span's refID
var hoverSpanRefID = hoverSpan.getAttribute("refid");
var theList = new Array();
// Find all of the references and deal with differing browsers.
if (document.getElementById("referenceList").lastChild.previousSibling.nodeName == "DIV") // Safari and Chrome
{
var theList = document.getElementById("referenceList").lastChild.previousSibling.children;
}
else if (document.getElementById("referenceList").lastChild.nodeName == "DIV") // Firefox
{
var theList = document.getElementById("referenceList").lastChild.children;
}
// Only apply the class to the reference element that has the same refID as the span.
for (var i = 0; i < theList.length; i++)
{
if ( hoverSpanRefID == theList[i].getAttribute("refid"))
{
theList[i].removeAttribute("class", "refHover");
}
}
}
// For Contributors
function conHover(hoverSpan)
{
// Select the span's refID
var hoverSpanConID = hoverSpan.getAttribute("conid");
// Find all of the references and deal with differing browsers.
if (document.getElementById("referenceList").childNodes.item(3).nodeName == "UL") //Safari and Chrome
{
var theList = document.getElementById("referenceList").childNodes.item(3).children;
}
else if (document.getElementById("referenceList").childNodes.item(1).nodeName == "UL") // Firefox
{
var theList = document.getElementById("referenceList").childNodes.item(1).children;
}
// Only apply the class to the reference element that has the same refID as the span.
for (i=0;i<theList.length;i++)
{
if ( hoverSpanConID == theList[i].getAttribute("conid"))
{
theList[i].setAttribute("class", "conHover");
}
}
}
function conUnhover(hoverSpan)
{
// Select the span's refID
var hoverSpanConID = hoverSpan.getAttribute("conid");
// Find all of the references and deal with differing browsers.
if (document.getElementById("referenceList").childNodes.item(3).nodeName == "UL") //Safari and Chrome
{
var theList = document.getElementById("referenceList").childNodes.item(3).children;
}
else if (document.getElementById("referenceList").childNodes.item(1).nodeName == "UL") // Firefox
{
var theList = document.getElementById("referenceList").childNodes.item(1).children;
}
// Only apply the class to the reference element that has the same refID as the span.
for (i=0;i<theList.length;i++)
{
if ( hoverSpanConID == theList[i].getAttribute("conid"))
{
theList[i].removeAttribute("class", "conHover");
}
}
}