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authorMorgan Richomme <morgan.richomme@orange.com>2016-05-23 14:40:54 +0200
committerMorgan Richomme <morgan.richomme@orange.com>2016-05-23 17:12:21 +0200
commitbb522c6efd9a02e611014038566b15feb28da0c8 (patch)
tree6f1f7845b7c905a3db9c21a2f719d34de9a775e3 /docs/com/plugin/notes/notes.js
parent1ee1c30e539c02924c34bfeb2dd260993f0481b4 (diff)
Add framework for presentations
Change-Id: I8ba24fb4b2a3a6c8d8c69f15a1fd9259aea4ab6c Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>
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diff --git a/docs/com/plugin/notes/notes.js b/docs/com/plugin/notes/notes.js
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+/**
+ * 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() {
+
+ function openNotes() {
+ var jsFileLocation = document.querySelector('script[src$="notes.js"]').src; // this js file path
+ jsFileLocation = jsFileLocation.replace(/notes\.js(\?.*)?$/, ''); // the js folder path
+ var notesPopup = window.open( jsFileLocation + 'notes.html', 'reveal.js - Notes', 'width=1100,height=700' );
+
+ /**
+ * 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();
+ }
+ } );
+ }
+
+ /**
+ * Posts the current slide data to the notes window
+ */
+ function post() {
+
+ var slideElement = Reveal.getCurrentSlide(),
+ notesElement = slideElement.querySelector( 'aside.notes' );
+
+ 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 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();
+ }
+
+ 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
+ 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();
+ openNotes();
+ }
+ }, false );
+
+ }
+
+ return { open: openNotes };
+
+})();