| At line 1 added 127 lines |
| %%prettify |
| {{{ |
| /** limits for different font-sizes */ |
| var lim1; |
| var lim2; |
|
| var limit = 0; |
| var order; |
|
| /** |
| * Retrieves tags from BibSonomy |
|
| * param url: the url of the JSON feed |
| * param limit: tag limitation |
| * param order: order of the tags (tagname or tagcount) |
| */ |
| function getTags(url, lim, ord) { |
| limit = lim; |
| order = ord; |
|
| var headID = document.getElementsByTagName("head")[0]; |
| var newScript = document.createElement("script"); |
| newScript.type = "text/javascript"; |
| newScript.src = url + "?callback=jsonBibSonomyFeed"; |
| headID.appendChild(newScript); |
| } |
|
| /** |
| * Handler function |
| */ |
| function jsonBibSonomyFeed(feed) { |
| var div = document.getElementById("tags"); |
| var ultag = document.getElementById("tagbox"); |
| var maxCount = -1000; |
| var minCount = 1000; |
| |
| for(x=0; x < feed.items.length; x++){ |
| var tagCount = feed.items[x].count; |
| if (tagCount < minCount) |
| minCount = tagCount; |
| if (tagCount > maxCount) |
| maxCount = tagCount; |
| } |
| var diff = maxCount - minCount; |
| var part = diff / 3; |
| lim2 = maxCount - part; |
| lim1 = lim2 - part; |
|
| // remove old tags |
| var lilength = ultag.getElementsByTagName("LI").length; |
| while (lilength > 0) { |
| ultag.removeChild(ultag.firstChild); |
| lilength = ultag.getElementsByTagName("LI").length; |
| } |
|
| // limitation |
| if (limit == 0 || limit > feed.items.length) |
| limit = feed.items.length; |
|
| // sort to frequency and cut after limit |
| feed.items = feed.items.sort(softFreq); |
| feed.items = feed.items.slice(0,limit); |
|
| // sort |
| feed.items = feed.items.sort(comparator); |
| |
| // insert new tags |
| var space = document.createTextNode(" "); |
| for(var x=0; x < feed.items.length; x++){ |
| var tagname = feed.items[x].label; |
| var tagcount = feed.items[x].count; |
| var clazz = getClazz(tagcount); |
| |
| var newli = document.createElement("LI"); |
|
| var newa = document.createElement("A"); |
| newa.href = "http://www.bibsonomy.org/tag/" + tagname; |
| newa.innerHTML = tagname; |
| newa.className = clazz; |
| |
| newli.appendChild(newa); |
| newli.appendChild(space.cloneNode(true)); |
| ultag.appendChild(newli); |
| } |
| } |
|
| /** |
| * compartor function for array sort |
| **/ |
| function comparator(x,y) { |
| if (order == "frequency") { |
| var count1 = x.count; |
| var count2 = y.count; |
| |
| return count2 - count1; |
| } else { |
| var name1 = x.label.toLowerCase(); |
| var name2 = y.label.toLowerCase(); |
| |
| return (name1 == name2) ? 0 : (name1 < name2) ? -1 : 1 |
| } |
| } |
|
| /** |
| * sorts array to frequency |
| **/ |
| function softFreq(x,y) { |
| var count1 = x.count; |
| var count2 = y.count; |
| |
| return count2 - count1; |
| } |
|
| /** |
| * Computes the style class for a tag |
| */ |
| function getClazz(count) { |
| if (count > lim2) |
| return "big"; |
| if (count < lim1) |
| return "small"; |
| return "normal"; |
| } |
|
|
| }}} |
| /% |
