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authorHolger Levsen <holger@layer-acht.org>2017-08-04 09:44:48 -0400
committerHolger Levsen <holger@layer-acht.org>2017-08-04 09:44:48 -0400
commitbe428000a5dd8081113323131cbc5af837a15e05 (patch)
treea7f80a75307a74eae8bf5e90a7418b1e64e3b08a /userContent/presentations/2017-08-07-DebConf17/plugin/search/search.js
parent7db8bb39699f6aff6d4e4e2c3a1c0c0712719b5b (diff)
downloadjenkins.debian.net-be428000a5dd8081113323131cbc5af837a15e05.tar.xz
copied from ../2016-11-30-Profitbricks without any changes yet
Signed-off-by: Holger Levsen <holger@layer-acht.org>
Diffstat (limited to 'userContent/presentations/2017-08-07-DebConf17/plugin/search/search.js')
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+/*
+ * 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 };
+})();