text: /*
   * 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-basic="searchinput" style="vertical-align: top;"/><img src="data:image/png;base64,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" id="searchbutton" class-basic="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 };
  })();
  