/* * Handles finding a text string anywhere in the slides and showing the next occurrence to the user * by navigatating to that slide and highlighting it. * * By Jon Snyder <snyder.jon@gmail.com>, February 2013 */ var RevealSearch = (function() { var matchedSlides; var currentMatchedIndex; var searchboxDirty; var myHilitor; // Original JavaScript code by Chirp Internet: www.chirp.com.au // Please acknowledge use of this code by including this header. // 2/2013 jon: modified regex to display any match, not restricted to word boundaries. function Hilitor(id, tag) { var targetNode = document.getElementById(id) || document.body; var hiliteTag = tag || "EM"; var skipTags = new RegExp("^(?:" + hiliteTag + "|SCRIPT|FORM|SPAN)$"); var colors = ["#ff6", "#a0ffff", "#9f9", "#f99", "#f6f"]; var wordColor = []; var colorIdx = 0; var matchRegex = ""; var matchingSlides = []; this.setRegex = function(input) { input = input.replace(/^[^\w]+|[^\w]+$/g, "").replace(/[^\w'-]+/g, "|"); matchRegex = new RegExp("(" + input + ")","i"); } this.getRegex = function() { return matchRegex.toString().replace(/^\/\\b\(|\)\\b\/i$/g, "").replace(/\|/g, " "); } // recursively apply word highlighting this.hiliteWords = function(node) { if(node == undefined || !node) return; if(!matchRegex) return; if(skipTags.test(node.nodeName)) return; if(node.hasChildNodes()) { for(var i=0; i < node.childNodes.length; i++) this.hiliteWords(node.childNodes[i]); } if(node.nodeType == 3) { // NODE_TEXT if((nv = node.nodeValue) && (regs = matchRegex.exec(nv))) { //find the slide's section element and save it in our list of matching slides var secnode = node.parentNode; while (secnode.nodeName != 'SECTION') { secnode = secnode.parentNode; } var slideIndex = Reveal.getIndices(secnode); var slidelen = matchingSlides.length; var alreadyAdded = false; for (var i=0; i < slidelen; i++) { if ( (matchingSlides[i].h === slideIndex.h) && (matchingSlides[i].v === slideIndex.v) ) { alreadyAdded = true; } } if (! alreadyAdded) { matchingSlides.push(slideIndex); } if(!wordColor[regs[0].toLowerCase()]) { wordColor[regs[0].toLowerCase()] = colors[colorIdx++ % colors.length]; } var match = document.createElement(hiliteTag); match.appendChild(document.createTextNode(regs[0])); match.style.backgroundColor = wordColor[regs[0].toLowerCase()]; match.style.fontStyle = "inherit"; match.style.color = "#000"; var after = node.splitText(regs.index); after.nodeValue = after.nodeValue.substring(regs[0].length); node.parentNode.insertBefore(match, after); } } }; // remove highlighting this.remove = function() { var arr = document.getElementsByTagName(hiliteTag); while(arr.length && (el = arr[0])) { el.parentNode.replaceChild(el.firstChild, el); } }; // start highlighting at target node this.apply = function(input) { if(input == undefined || !input) return; this.remove(); this.setRegex(input); this.hiliteWords(targetNode); return matchingSlides; }; } function openSearch() { //ensure the search term input dialog is visible and has focus: var inputbox = document.getElementById("searchinput"); inputbox.style.display = "inline"; inputbox.focus(); inputbox.select(); } function toggleSearch() { var inputbox = document.getElementById("searchinput"); if (inputbox.style.display !== "inline") { openSearch(); } else { inputbox.style.display = "none"; myHilitor.remove(); } } function doSearch() { //if there's been a change in the search term, perform a new search: if (searchboxDirty) { var searchstring = document.getElementById("searchinput").value; //find the keyword amongst the slides myHilitor = new Hilitor("slidecontent"); matchedSlides = myHilitor.apply(searchstring); currentMatchedIndex = 0; } //navigate to the next slide that has the keyword, wrapping to the first if necessary if (matchedSlides.length && (matchedSlides.length <= currentMatchedIndex)) { currentMatchedIndex = 0; } if (matchedSlides.length > currentMatchedIndex) { Reveal.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v); currentMatchedIndex++; } } var dom = {}; dom.wrapper = document.querySelector( '.reveal' ); if( !dom.wrapper.querySelector( '.searchbox' ) ) { var searchElement = document.createElement( 'div' ); searchElement.id = "searchinputdiv"; searchElement.classList.add( 'searchdiv' ); searchElement.style.position = 'absolute'; searchElement.style.top = '10px'; searchElement.style.left = '10px'; //embedded base64 search icon Designed by Sketchdock - http://www.sketchdock.com/: searchElement.innerHTML = '<span><input type="search" id="searchinput" class="searchinput" style="vertical-align: top;"/><img src="data:image/png;base64,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" id="searchbutton" class="searchicon" style="vertical-align: top; margin-top: -1px;"/></span>'; dom.wrapper.appendChild( searchElement ); } document.getElementById("searchbutton").addEventListener( 'click', function(event) { doSearch(); }, false ); document.getElementById("searchinput").addEventListener( 'keyup', function( event ) { switch (event.keyCode) { case 13: event.preventDefault(); doSearch(); searchboxDirty = false; break; default: searchboxDirty = true; } }, false ); // Open the search when the 's' key is hit (yes, this conflicts with the notes plugin, disabling for now) /* document.addEventListener( 'keydown', function( event ) { // Disregard the event if the target is editable or a // modifier is present if ( document.querySelector( ':focus' ) !== null || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return; if( event.keyCode === 83 ) { event.preventDefault(); openSearch(); } }, false ); */ return { open: openSearch }; })();