/* Original jQuery highlight code: highlight v3 Highlights arbitrary terms. MIT license. Johann Burkard Modified slightly... */ jQuery.fn.highlight = function(pat, className) { function innerHighlight(node, pat) { var skip = 0; if (node.nodeType == 3) { var pos = node.data.toUpperCase().indexOf(pat); if (pos >= 0) { var spannode = document.createElement('span'); spannode.className = className; var middlebit = node.splitText(pos); var endbit = middlebit.splitText(pat.length); var middleclone = middlebit.cloneNode(true); spannode.appendChild(middleclone); middlebit.parentNode.replaceChild(spannode, middlebit); skip = 1; } } else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) { for (var i = 0; i < node.childNodes.length; ++i) { i += innerHighlight(node.childNodes[i], pat); } } return skip; } return this.each(function() { innerHighlight(this, pat.toUpperCase()); }); }; /* * This is sort of a wrapper function to the doHighlight function. * It takes the searchText that you pass, optionally splits it into * separate words, and transforms the text on the current web page. * Only the "searchText" parameter is required; all other parameters * are optional and can be omitted. */ function highlightSearchTerms(searchText, treatAsPhrase, className) { // if the treatAsPhrase parameter is true, then we should search for // the entire phrase that was entered; otherwise, we will split the // search string so that each word is searched for and highlighted // individually if(treatAsPhrase) { searchArray = [searchText]; } else { searchArray = searchText.split(" "); } for(var i = 0; i < searchArray.length; i++) { // STOP LIST // var termLC = searchArray[i].toLowerCase(); if(termLC != "and" && termLC != "of" && termLC != "or" && termLC != "when" && termLC != "a" && termLC != "the" && termLC != "not" && termLC.length != 0) { $('#documentcontent').highlight(searchArray[i], className); } } return true; } /* * This function takes a referer/referrer string and parses it * to determine if it contains any search terms. If it does, the * search terms are passed to the highlightSearchTerms function * so they can be highlighted on the current page. */ function highlightForrSearchTerms(referrer, pageType) { // call the function in the onload event of your tag, // like this: // if(!document.getElementById("documentcontent")) { return false; } if(!referrer) { return false; } if(!pageType) { pageType = "document"; } var queryPrefix = "ntt"; if(pageType == "surveyexplorer") { queryPrefix = "newsearch"; } var className = "hilite"; if(readCookie("forrSearchPrefUrl") != null && readCookie("forrSearchPrefUrl").match("highdoc=0")) { className = "hiliteoff"; } var queryString = getQueryVariable(referrer.toLowerCase(), queryPrefix); if(queryString == "") { return false; } // urldecode string, change pipes and pluses to spaces queryString = unescape(queryString); queryString = queryString.replace(/\|/gi, " "); queryString = queryString.replace(/\+/gi, " "); // filter out 'not' phrases queryString = queryString.replace(/\s*\bnot\b.*?(\s\band\b|\s\bor\b|$)+/gi, "$1"); // grab phrases in quotes and highlight them var re = new RegExp("\"(.*?)\""); while(queryString.match(re)) { // send phrase to get highlighted without space at beginning or end highlightSearchTerms(RegExp.$1.replace(/^\s*(.*?)\s*$/gi, "$1"), true, className); // remove the phrase from the querystring queryString = queryString.replace(re, ""); } // remove ':', as it confuses things queryString = queryString.replace(/:/gi, ""); // remove the quotes queryString = queryString.replace(/\"/gi, ""); // remove whitespace at the beginning and end of the string queryString = queryString.replace(/^\s*(.*?)\s*$/gi, "$1"); // if there is anything left to highlight, send it to the highlight function if(queryString.length != 0) { return highlightSearchTerms(queryString, false, className); } else { return false; } } function toggleHighlight() { var toggle = document.getElementById("toggle"); if(toggle.innerHTML == "Turn Off Highlighting") { toggle.innerHTML = "Turn On Highlighting"; } else { toggle.innerHTML = "Turn Off Highlighting"; } var spans = document.getElementsByTagName("span"); for(var i = 0; i < spans.length; i++) { if(spans[i].className == "hilite") { spans[i].className = "hiliteoff"; } else { if(spans[i].className == "hiliteoff") { spans[i].className = "hilite"; } } } } // basic idea from: // http://www.zrinity.com/developers/code_samples/code.cfm/CodeID/59/JavaScript/Get_Query_String_variables_in_JavaScript function getQueryVariable(url, variable) { var query = url.substring(url.indexOf("?") + 1); var vars = query.split("&"); for(var i = 0; i < vars.length; i++) { var pair = vars[i].split("="); if(pair[0] == variable) { return pair[1]; } } return ''; }