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-rw-r--r--presentation/plugin/notes/notes.html829
-rw-r--r--presentation/plugin/notes/notes.js177
2 files changed, 1006 insertions, 0 deletions
diff --git a/presentation/plugin/notes/notes.html b/presentation/plugin/notes/notes.html
new file mode 100644
index 0000000..2b8452f
--- /dev/null
+++ b/presentation/plugin/notes/notes.html
@@ -0,0 +1,829 @@
+<!doctype html>
+<html lang="en">
+<head>
+ <meta charset="utf-8">
+
+ <title>reveal.js - Slide Notes</title>
+
+ <style>
+ body {
+ font-family: Helvetica;
+ font-size: 18px;
+ }
+
+ #current-slide,
+ #upcoming-slide,
+ #speaker-controls {
+ padding: 6px;
+ box-sizing: border-box;
+ -moz-box-sizing: border-box;
+ }
+
+ #current-slide iframe,
+ #upcoming-slide iframe {
+ width: 100%;
+ height: 100%;
+ border: 1px solid #ddd;
+ }
+
+ #current-slide .label,
+ #upcoming-slide .label {
+ position: absolute;
+ top: 10px;
+ left: 10px;
+ z-index: 2;
+ }
+
+ #connection-status {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ z-index: 20;
+ padding: 30% 20% 20% 20%;
+ font-size: 18px;
+ color: #222;
+ background: #fff;
+ text-align: center;
+ box-sizing: border-box;
+ line-height: 1.4;
+ }
+
+ .overlay-element {
+ height: 34px;
+ line-height: 34px;
+ padding: 0 10px;
+ text-shadow: none;
+ background: rgba(220, 220, 220, 0.8);
+ color: #222;
+ font-size: 14px;
+ }
+
+ .overlay-element.interactive:hover {
+ background: rgba(220, 220, 220, 1);
+ }
+
+ #current-slide {
+ position: absolute;
+ width: 60%;
+ height: 100%;
+ top: 0;
+ left: 0;
+ padding-right: 0;
+ }
+
+ #upcoming-slide {
+ position: absolute;
+ width: 40%;
+ height: 40%;
+ right: 0;
+ top: 0;
+ }
+
+ /* Speaker controls */
+ #speaker-controls {
+ position: absolute;
+ top: 40%;
+ right: 0;
+ width: 40%;
+ height: 60%;
+ overflow: auto;
+ font-size: 18px;
+ }
+
+ .speaker-controls-time.hidden,
+ .speaker-controls-notes.hidden {
+ display: none;
+ }
+
+ .speaker-controls-time .label,
+ .speaker-controls-pace .label,
+ .speaker-controls-notes .label {
+ text-transform: uppercase;
+ font-weight: normal;
+ font-size: 0.66em;
+ color: #666;
+ margin: 0;
+ }
+
+ .speaker-controls-time, .speaker-controls-pace {
+ border-bottom: 1px solid rgba(200, 200, 200, 0.5);
+ margin-bottom: 10px;
+ padding: 10px 16px;
+ padding-bottom: 20px;
+ cursor: pointer;
+ }
+
+ .speaker-controls-time .reset-button {
+ opacity: 0;
+ float: right;
+ color: #666;
+ text-decoration: none;
+ }
+
+ .speaker-controls-time:hover .reset-button {
+ opacity: 1;
+ }
+
+ .speaker-controls-time .timer,
+ .speaker-controls-time .clock {
+ width: 50%;
+ }
+
+ .speaker-controls-time .timer,
+ .speaker-controls-time .clock,
+ .speaker-controls-time .pacing .hours-value,
+ .speaker-controls-time .pacing .minutes-value,
+ .speaker-controls-time .pacing .seconds-value {
+ font-size: 1.9em;
+ }
+
+ .speaker-controls-time .timer {
+ float: left;
+ }
+
+ .speaker-controls-time .clock {
+ float: right;
+ text-align: right;
+ }
+
+ .speaker-controls-time span.mute {
+ opacity: 0.3;
+ }
+
+ .speaker-controls-time .pacing-title {
+ margin-top: 5px;
+ }
+
+ .speaker-controls-time .pacing.ahead {
+ color: blue;
+ }
+
+ .speaker-controls-time .pacing.on-track {
+ color: green;
+ }
+
+ .speaker-controls-time .pacing.behind {
+ color: red;
+ }
+
+ .speaker-controls-notes {
+ padding: 10px 16px;
+ }
+
+ .speaker-controls-notes .value {
+ margin-top: 5px;
+ line-height: 1.4;
+ font-size: 1.2em;
+ }
+
+ /* Layout selector */
+ #speaker-layout {
+ position: absolute;
+ top: 10px;
+ right: 10px;
+ color: #222;
+ z-index: 10;
+ }
+
+ #speaker-layout select {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ top: 0;
+ left: 0;
+ border: 0;
+ box-shadow: 0;
+ cursor: pointer;
+ opacity: 0;
+
+ font-size: 1em;
+ background-color: transparent;
+
+ -moz-appearance: none;
+ -webkit-appearance: none;
+ -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
+ }
+
+ #speaker-layout select:focus {
+ outline: none;
+ box-shadow: none;
+ }
+
+ .clear {
+ clear: both;
+ }
+
+ /* Speaker layout: Wide */
+ body[data-speaker-layout="wide"] #current-slide,
+ body[data-speaker-layout="wide"] #upcoming-slide {
+ width: 50%;
+ height: 45%;
+ padding: 6px;
+ }
+
+ body[data-speaker-layout="wide"] #current-slide {
+ top: 0;
+ left: 0;
+ }
+
+ body[data-speaker-layout="wide"] #upcoming-slide {
+ top: 0;
+ left: 50%;
+ }
+
+ body[data-speaker-layout="wide"] #speaker-controls {
+ top: 45%;
+ left: 0;
+ width: 100%;
+ height: 50%;
+ font-size: 1.25em;
+ }
+
+ /* Speaker layout: Tall */
+ body[data-speaker-layout="tall"] #current-slide,
+ body[data-speaker-layout="tall"] #upcoming-slide {
+ width: 45%;
+ height: 50%;
+ padding: 6px;
+ }
+
+ body[data-speaker-layout="tall"] #current-slide {
+ top: 0;
+ left: 0;
+ }
+
+ body[data-speaker-layout="tall"] #upcoming-slide {
+ top: 50%;
+ left: 0;
+ }
+
+ body[data-speaker-layout="tall"] #speaker-controls {
+ padding-top: 40px;
+ top: 0;
+ left: 45%;
+ width: 55%;
+ height: 100%;
+ font-size: 1.25em;
+ }
+
+ /* Speaker layout: Notes only */
+ body[data-speaker-layout="notes-only"] #current-slide,
+ body[data-speaker-layout="notes-only"] #upcoming-slide {
+ display: none;
+ }
+
+ body[data-speaker-layout="notes-only"] #speaker-controls {
+ padding-top: 40px;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ font-size: 1.25em;
+ }
+
+ @media screen and (max-width: 1080px) {
+ body[data-speaker-layout="default"] #speaker-controls {
+ font-size: 16px;
+ }
+ }
+
+ @media screen and (max-width: 900px) {
+ body[data-speaker-layout="default"] #speaker-controls {
+ font-size: 14px;
+ }
+ }
+
+ @media screen and (max-width: 800px) {
+ body[data-speaker-layout="default"] #speaker-controls {
+ font-size: 12px;
+ }
+ }
+
+ </style>
+</head>
+
+<body>
+
+<div id="connection-status">Loading speaker view...</div>
+
+<div id="current-slide"></div>
+<div id="upcoming-slide"><span class="overlay-element label">Upcoming</span></div>
+<div id="speaker-controls">
+ <div class="speaker-controls-time">
+ <h4 class="label">Time <span class="reset-button">Click to Reset</span></h4>
+ <div class="clock">
+ <span class="clock-value">0:00 AM</span>
+ </div>
+ <div class="timer">
+ <span class="hours-value">00</span><span class="minutes-value">:00</span><span
+ class="seconds-value">:00</span>
+ </div>
+ <div class="clear"></div>
+
+ <h4 class="label pacing-title" style="display: none">Pacing – Time to finish current slide</h4>
+ <div class="pacing" style="display: none">
+ <span class="hours-value">00</span><span class="minutes-value">:00</span><span
+ class="seconds-value">:00</span>
+ </div>
+ </div>
+
+ <div class="speaker-controls-notes hidden">
+ <h4 class="label">Notes</h4>
+ <div class="value"></div>
+ </div>
+</div>
+<div class="overlay-element interactive" id="speaker-layout">
+ <span class="speaker-layout-label"></span>
+ <select class="speaker-layout-dropdown"></select>
+</div>
+
+<script src="../../plugin/markdown/marked.js"></script>
+<script>
+
+ (function () {
+
+ var notes,
+ notesValue,
+ currentState,
+ currentSlide,
+ upcomingSlide,
+ layoutLabel,
+ layoutDropdown,
+ pendingCalls = {},
+ lastRevealApiCallId = 0,
+ connected = false;
+
+ var SPEAKER_LAYOUTS = {
+ 'default': 'Default',
+ 'wide': 'Wide',
+ 'tall': 'Tall',
+ 'notes-only': 'Notes only'
+ };
+
+ setupLayout();
+
+ var connectionStatus = document.querySelector('#connection-status');
+ var connectionTimeout = setTimeout(function () {
+ connectionStatus.innerHTML = 'Error connecting to main window.<br>Please try closing and reopening the speaker view.';
+ }, 5000);
+
+ window.addEventListener('message', function (event) {
+
+ clearTimeout(connectionTimeout);
+ connectionStatus.style.display = 'none';
+
+ var data = JSON.parse(event.data);
+
+ // The overview mode is only useful to the reveal.js instance
+ // where navigation occurs so we don't sync it
+ if (data.state) delete data.state.overview;
+
+ // Messages sent by the notes plugin inside of the main window
+ if (data && data.namespace === 'reveal-notes') {
+ if (data.type === 'connect') {
+ handleConnectMessage(data);
+ } else if (data.type === 'state') {
+ handleStateMessage(data);
+ } else if (data.type === 'return') {
+ pendingCalls[data.callId](data.result);
+ delete pendingCalls[data.callId];
+ }
+ }
+ // Messages sent by the reveal.js inside of the current slide preview
+ else if (data && data.namespace === 'reveal') {
+ if (/ready/.test(data.eventName)) {
+ // Send a message back to notify that the handshake is complete
+ window.opener.postMessage(JSON.stringify({namespace: 'reveal-notes', type: 'connected'}), '*');
+ } else if (/slidechanged|fragmentshown|fragmenthidden|paused|resumed/.test(data.eventName) && currentState !== JSON.stringify(data.state)) {
+
+ window.opener.postMessage(JSON.stringify({method: 'setState', args: [data.state]}), '*');
+
+ }
+ }
+
+ });
+
+ /**
+ * Asynchronously calls the Reveal.js API of the main frame.
+ */
+ function callRevealApi(methodName, methodArguments, callback) {
+
+ var callId = ++lastRevealApiCallId;
+ pendingCalls[callId] = callback;
+ window.opener.postMessage(JSON.stringify({
+ namespace: 'reveal-notes',
+ type: 'call',
+ callId: callId,
+ methodName: methodName,
+ arguments: methodArguments
+ }), '*');
+
+ }
+
+ /**
+ * Called when the main window is trying to establish a
+ * connection.
+ */
+ function handleConnectMessage(data) {
+
+ if (connected === false) {
+ connected = true;
+
+ setupIframes(data);
+ setupKeyboard();
+ setupNotes();
+ setupTimer();
+ }
+
+ }
+
+ /**
+ * Called when the main window sends an updated state.
+ */
+ function handleStateMessage(data) {
+
+ // Store the most recently set state to avoid circular loops
+ // applying the same state
+ currentState = JSON.stringify(data.state);
+
+ // No need for updating the notes in case of fragment changes
+ if (data.notes) {
+ notes.classList.remove('hidden');
+ notesValue.style.whiteSpace = data.whitespace;
+ if (data.markdown) {
+ notesValue.innerHTML = marked(data.notes);
+ } else {
+ notesValue.innerHTML = data.notes;
+ }
+ } else {
+ notes.classList.add('hidden');
+ }
+
+ // Update the note slides
+ currentSlide.contentWindow.postMessage(JSON.stringify({method: 'setState', args: [data.state]}), '*');
+ upcomingSlide.contentWindow.postMessage(JSON.stringify({method: 'setState', args: [data.state]}), '*');
+ upcomingSlide.contentWindow.postMessage(JSON.stringify({method: 'next'}), '*');
+
+ }
+
+ // Limit to max one state update per X ms
+ handleStateMessage = debounce(handleStateMessage, 200);
+
+ /**
+ * Forward keyboard events to the current slide window.
+ * This enables keyboard events to work even if focus
+ * isn't set on the current slide iframe.
+ *
+ * Block F5 default handling, it reloads and disconnects
+ * the speaker notes window.
+ */
+ function setupKeyboard() {
+
+ document.addEventListener('keydown', function (event) {
+ if (event.keyCode === 116 || (event.metaKey && event.keyCode === 82)) {
+ event.preventDefault();
+ return false;
+ }
+ currentSlide.contentWindow.postMessage(JSON.stringify({
+ method: 'triggerKey',
+ args: [event.keyCode]
+ }), '*');
+ });
+
+ }
+
+ /**
+ * Creates the preview iframes.
+ */
+ function setupIframes(data) {
+
+ var params = [
+ 'receiver',
+ 'progress=false',
+ 'history=false',
+ 'transition=none',
+ 'autoSlide=0',
+ 'backgroundTransition=none'
+ ].join('&');
+
+ var urlSeparator = /\?/.test(data.url) ? '&' : '?';
+ var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
+ var currentURL = data.url + urlSeparator + params + '&postMessageEvents=true' + hash;
+ var upcomingURL = data.url + urlSeparator + params + '&controls=false' + hash;
+
+ currentSlide = document.createElement('iframe');
+ currentSlide.setAttribute('width', 1280);
+ currentSlide.setAttribute('height', 1024);
+ currentSlide.setAttribute('src', currentURL);
+ document.querySelector('#current-slide').appendChild(currentSlide);
+
+ upcomingSlide = document.createElement('iframe');
+ upcomingSlide.setAttribute('width', 640);
+ upcomingSlide.setAttribute('height', 512);
+ upcomingSlide.setAttribute('src', upcomingURL);
+ document.querySelector('#upcoming-slide').appendChild(upcomingSlide);
+
+ }
+
+ /**
+ * Setup the notes UI.
+ */
+ function setupNotes() {
+
+ notes = document.querySelector('.speaker-controls-notes');
+ notesValue = document.querySelector('.speaker-controls-notes .value');
+
+ }
+
+ function getTimings(callback) {
+
+ callRevealApi('getSlidesAttributes', [], function (slideAttributes) {
+ callRevealApi('getConfig', [], function (config) {
+ var defaultTiming = config.defaultTiming;
+ if (defaultTiming == null) {
+ callback(null);
+ return;
+ }
+
+ var timings = [];
+ for (var i in slideAttributes) {
+ var slide = slideAttributes[i];
+ var timing = defaultTiming;
+ if (slide.hasOwnProperty('data-timing')) {
+ var t = slide['data-timing'];
+ timing = parseInt(t);
+ if (isNaN(timing)) {
+ console.warn("Could not parse timing '" + t + "' of slide " + i + "; using default of " + defaultTiming);
+ timing = defaultTiming;
+ }
+ }
+ timings.push(timing);
+ }
+
+ callback(timings);
+ });
+ });
+
+ }
+
+ /**
+ * Return the number of seconds allocated for presenting
+ * all slides up to and including this one.
+ */
+ function getTimeAllocated(timings, callback) {
+
+ callRevealApi('getSlidePastCount', [], function (currentSlide) {
+ var allocated = 0;
+ for (var i in timings.slice(0, currentSlide + 1)) {
+ allocated += timings[i];
+ }
+ callback(allocated);
+ });
+
+ }
+
+ /**
+ * Create the timer and clock and start updating them
+ * at an interval.
+ */
+ function setupTimer() {
+
+ var start = new Date(),
+ timeEl = document.querySelector('.speaker-controls-time'),
+ clockEl = timeEl.querySelector('.clock-value'),
+ hoursEl = timeEl.querySelector('.hours-value'),
+ minutesEl = timeEl.querySelector('.minutes-value'),
+ secondsEl = timeEl.querySelector('.seconds-value'),
+ pacingTitleEl = timeEl.querySelector('.pacing-title'),
+ pacingEl = timeEl.querySelector('.pacing'),
+ pacingHoursEl = pacingEl.querySelector('.hours-value'),
+ pacingMinutesEl = pacingEl.querySelector('.minutes-value'),
+ pacingSecondsEl = pacingEl.querySelector('.seconds-value');
+
+ var timings = null;
+ getTimings(function (_timings) {
+
+ timings = _timings;
+ if (_timings !== null) {
+ pacingTitleEl.style.removeProperty('display');
+ pacingEl.style.removeProperty('display');
+ }
+
+ // Update once directly
+ _updateTimer();
+
+ // Then update every second
+ setInterval(_updateTimer, 1000);
+
+ });
+
+
+ function _resetTimer() {
+
+ if (timings == null) {
+ start = new Date();
+ _updateTimer();
+ } else {
+ // Reset timer to beginning of current slide
+ getTimeAllocated(timings, function (slideEndTimingSeconds) {
+ var slideEndTiming = slideEndTimingSeconds * 1000;
+ callRevealApi('getSlidePastCount', [], function (currentSlide) {
+ var currentSlideTiming = timings[currentSlide] * 1000;
+ var previousSlidesTiming = slideEndTiming - currentSlideTiming;
+ var now = new Date();
+ start = new Date(now.getTime() - previousSlidesTiming);
+ _updateTimer();
+ });
+ });
+ }
+
+ }
+
+ timeEl.addEventListener('click', function () {
+ _resetTimer();
+ return false;
+ });
+
+ function _displayTime(hrEl, minEl, secEl, time) {
+
+ var sign = Math.sign(time) == -1 ? "-" : "";
+ time = Math.abs(Math.round(time / 1000));
+ var seconds = time % 60;
+ var minutes = Math.floor(time / 60) % 60;
+ var hours = Math.floor(time / (60 * 60));
+ hrEl.innerHTML = sign + zeroPadInteger(hours);
+ if (hours == 0) {
+ hrEl.classList.add('mute');
+ } else {
+ hrEl.classList.remove('mute');
+ }
+ minEl.innerHTML = ':' + zeroPadInteger(minutes);
+ if (hours == 0 && minutes == 0) {
+ minEl.classList.add('mute');
+ } else {
+ minEl.classList.remove('mute');
+ }
+ secEl.innerHTML = ':' + zeroPadInteger(seconds);
+ }
+
+ function _updateTimer() {
+
+ var diff, hours, minutes, seconds,
+ now = new Date();
+
+ diff = now.getTime() - start.getTime();
+
+ clockEl.innerHTML = now.toLocaleTimeString('en-US', {hour12: true, hour: '2-digit', minute: '2-digit'});
+ _displayTime(hoursEl, minutesEl, secondsEl, diff);
+ if (timings !== null) {
+ _updatePacing(diff);
+ }
+
+ }
+
+ function _updatePacing(diff) {
+
+ getTimeAllocated(timings, function (slideEndTimingSeconds) {
+ var slideEndTiming = slideEndTimingSeconds * 1000;
+
+ callRevealApi('getSlidePastCount', [], function (currentSlide) {
+ var currentSlideTiming = timings[currentSlide] * 1000;
+ var timeLeftCurrentSlide = slideEndTiming - diff;
+ if (timeLeftCurrentSlide < 0) {
+ pacingEl.className = 'pacing behind';
+ } else if (timeLeftCurrentSlide < currentSlideTiming) {
+ pacingEl.className = 'pacing on-track';
+ } else {
+ pacingEl.className = 'pacing ahead';
+ }
+ _displayTime(pacingHoursEl, pacingMinutesEl, pacingSecondsEl, timeLeftCurrentSlide);
+ });
+ });
+ }
+
+ }
+
+ /**
+ * Sets up the speaker view layout and layout selector.
+ */
+ function setupLayout() {
+
+ layoutDropdown = document.querySelector('.speaker-layout-dropdown');
+ layoutLabel = document.querySelector('.speaker-layout-label');
+
+ // Render the list of available layouts
+ for (var id in SPEAKER_LAYOUTS) {
+ var option = document.createElement('option');
+ option.setAttribute('value', id);
+ option.textContent = SPEAKER_LAYOUTS[id];
+ layoutDropdown.appendChild(option);
+ }
+
+ // Monitor the dropdown for changes
+ layoutDropdown.addEventListener('change', function (event) {
+
+ setLayout(layoutDropdown.value);
+
+ }, false);
+
+ // Restore any currently persisted layout
+ setLayout(getLayout());
+
+ }
+
+ /**
+ * Sets a new speaker view layout. The layout is persisted
+ * in local storage.
+ */
+ function setLayout(value) {
+
+ var title = SPEAKER_LAYOUTS[value];
+
+ layoutLabel.innerHTML = 'Layout' + (title ? (': ' + title) : '');
+ layoutDropdown.value = value;
+
+ document.body.setAttribute('data-speaker-layout', value);
+
+ // Persist locally
+ if (supportsLocalStorage()) {
+ window.localStorage.setItem('reveal-speaker-layout', value);
+ }
+
+ }
+
+ /**
+ * Returns the ID of the most recently set speaker layout
+ * or our default layout if none has been set.
+ */
+ function getLayout() {
+
+ if (supportsLocalStorage()) {
+ var layout = window.localStorage.getItem('reveal-speaker-layout');
+ if (layout) {
+ return layout;
+ }
+ }
+
+ // Default to the first record in the layouts hash
+ for (var id in SPEAKER_LAYOUTS) {
+ return id;
+ }
+
+ }
+
+ function supportsLocalStorage() {
+
+ try {
+ localStorage.setItem('test', 'test');
+ localStorage.removeItem('test');
+ return true;
+ } catch (e) {
+ return false;
+ }
+
+ }
+
+ function zeroPadInteger(num) {
+
+ var str = '00' + parseInt(num);
+ return str.substring(str.length - 2);
+
+ }
+
+ /**
+ * Limits the frequency at which a function can be called.
+ */
+ function debounce(fn, ms) {
+
+ var lastTime = 0,
+ timeout;
+
+ return function () {
+
+ var args = arguments;
+ var context = this;
+
+ clearTimeout(timeout);
+
+ var timeSinceLastCall = Date.now() - lastTime;
+ if (timeSinceLastCall > ms) {
+ fn.apply(context, args);
+ lastTime = Date.now();
+ } else {
+ timeout = setTimeout(function () {
+ fn.apply(context, args);
+ lastTime = Date.now();
+ }, ms - timeSinceLastCall);
+ }
+
+ }
+
+ }
+
+ })();
+
+</script>
+</body>
+</html>
diff --git a/presentation/plugin/notes/notes.js b/presentation/plugin/notes/notes.js
new file mode 100644
index 0000000..7866ab3
--- /dev/null
+++ b/presentation/plugin/notes/notes.js
@@ -0,0 +1,177 @@
+/**
+ * Handles opening of and synchronization with the reveal.js
+ * notes window.
+ *
+ * Handshake process:
+ * 1. This window posts 'connect' to notes window
+ * - Includes URL of presentation to show
+ * 2. Notes window responds with 'connected' when it is available
+ * 3. This window proceeds to send the current presentation state
+ * to the notes window
+ */
+var RevealNotes = (function () {
+
+ var notesPopup = null;
+
+ function openNotes(notesFilePath) {
+
+ if (notesPopup && !notesPopup.closed) {
+ notesPopup.focus();
+ return;
+ }
+
+ if (!notesFilePath) {
+ var jsFileLocation = document.querySelector('script[src$="notes.js"]').src; // this js file path
+ jsFileLocation = jsFileLocation.replace(/notes\.js(\?.*)?$/, ''); // the js folder path
+ notesFilePath = jsFileLocation + 'notes.html';
+ }
+
+ notesPopup = window.open(notesFilePath, 'reveal.js - Notes', 'width=1100,height=700');
+
+ if (!notesPopup) {
+ alert('Speaker view popup failed to open. Please make sure popups are allowed and reopen the speaker view.');
+ return;
+ }
+
+ /**
+ * Connect to the notes window through a postmessage handshake.
+ * Using postmessage enables us to work in situations where the
+ * origins differ, such as a presentation being opened from the
+ * file system.
+ */
+ function connect() {
+ // Keep trying to connect until we get a 'connected' message back
+ var connectInterval = setInterval(function () {
+ notesPopup.postMessage(JSON.stringify({
+ namespace: 'reveal-notes',
+ type: 'connect',
+ url: window.location.protocol + '//' + window.location.host + window.location.pathname + window.location.search,
+ state: Reveal.getState()
+ }), '*');
+ }, 500);
+
+ window.addEventListener('message', function (event) {
+ var data = JSON.parse(event.data);
+ if (data && data.namespace === 'reveal-notes' && data.type === 'connected') {
+ clearInterval(connectInterval);
+ onConnected();
+ }
+ if (data && data.namespace === 'reveal-notes' && data.type === 'call') {
+ callRevealApi(data.methodName, data.arguments, data.callId);
+ }
+ });
+ }
+
+ /**
+ * Calls the specified Reveal.js method with the provided argument
+ * and then pushes the result to the notes frame.
+ */
+ function callRevealApi(methodName, methodArguments, callId) {
+
+ var result = Reveal[methodName].apply(Reveal, methodArguments);
+ notesPopup.postMessage(JSON.stringify({
+ namespace: 'reveal-notes',
+ type: 'return',
+ result: result,
+ callId: callId
+ }), '*');
+
+ }
+
+ /**
+ * Posts the current slide data to the notes window
+ */
+ function post(event) {
+
+ var slideElement = Reveal.getCurrentSlide(),
+ notesElement = slideElement.querySelector('aside.notes'),
+ fragmentElement = slideElement.querySelector('.current-fragment');
+
+ var messageData = {
+ namespace: 'reveal-notes',
+ type: 'state',
+ notes: '',
+ markdown: false,
+ whitespace: 'normal',
+ state: Reveal.getState()
+ };
+
+ // Look for notes defined in a slide attribute
+ if (slideElement.hasAttribute('data-notes')) {
+ messageData.notes = slideElement.getAttribute('data-notes');
+ messageData.whitespace = 'pre-wrap';
+ }
+
+ // Look for notes defined in a fragment
+ if (fragmentElement) {
+ var fragmentNotes = fragmentElement.querySelector('aside.notes');
+ if (fragmentNotes) {
+ notesElement = fragmentNotes;
+ } else if (fragmentElement.hasAttribute('data-notes')) {
+ messageData.notes = fragmentElement.getAttribute('data-notes');
+ messageData.whitespace = 'pre-wrap';
+
+ // In case there are slide notes
+ notesElement = null;
+ }
+ }
+
+ // Look for notes defined in an aside element
+ if (notesElement) {
+ messageData.notes = notesElement.innerHTML;
+ messageData.markdown = typeof notesElement.getAttribute('data-markdown') === 'string';
+ }
+
+ notesPopup.postMessage(JSON.stringify(messageData), '*');
+
+ }
+
+ /**
+ * Called once we have established a connection to the notes
+ * window.
+ */
+ function onConnected() {
+
+ // Monitor events that trigger a change in state
+ Reveal.addEventListener('slidechanged', post);
+ Reveal.addEventListener('fragmentshown', post);
+ Reveal.addEventListener('fragmenthidden', post);
+ Reveal.addEventListener('overviewhidden', post);
+ Reveal.addEventListener('overviewshown', post);
+ Reveal.addEventListener('paused', post);
+ Reveal.addEventListener('resumed', post);
+
+ // Post the initial state
+ post();
+
+ }
+
+ connect();
+
+ }
+
+ return {
+ init: function () {
+
+ if (!/receiver/i.test(window.location.search)) {
+
+ // If the there's a 'notes' query set, open directly
+ if (window.location.search.match(/(\?|\&)notes/gi) !== null) {
+ openNotes();
+ }
+
+ // Open the notes when the 's' key is hit
+ Reveal.addKeyBinding({keyCode: 83, key: 'S', description: 'Speaker notes view'}, function () {
+ openNotes();
+ });
+
+ }
+
+ },
+
+ open: openNotes
+ };
+
+})();
+
+Reveal.registerPlugin('notes', RevealNotes);