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authorHakim El Hattab <hakim.elhattab@gmail.com>2014-04-19 10:54:14 +0200
committerHakim El Hattab <hakim.elhattab@gmail.com>2014-04-19 10:54:26 +0200
commit5b18c1f308523527566cefc85414170e922bc4a2 (patch)
tree480b2b7b4d296ff41fec6e26a3a83f8063c70a57 /plugin/notes/notes.html
parentce31184bf30fcfbc45dab480d0072e51f626b15a (diff)
downloadfreenode-live-2017-presentation-5b18c1f308523527566cefc85414170e922bc4a2.tar
freenode-live-2017-presentation-5b18c1f308523527566cefc85414170e922bc4a2.tar.gz
notes plugin now operates entirely through window.postMessage, adding support for file protocol
Diffstat (limited to 'plugin/notes/notes.html')
-rw-r--r--plugin/notes/notes.html176
1 files changed, 109 insertions, 67 deletions
diff --git a/plugin/notes/notes.html b/plugin/notes/notes.html
index 847499d..3e9e8b7 100644
--- a/plugin/notes/notes.html
+++ b/plugin/notes/notes.html
@@ -82,6 +82,7 @@
left: 3px;
font-weight: bold;
font-size: 14px;
+ z-index: 2;
color: rgba( 255, 255, 255, 0.9 );
}
@@ -138,22 +139,8 @@
<body>
- <script>
- function getNotesURL( controls ) {
- return window.opener.location.protocol + '//' + window.opener.location.host + window.opener.location.pathname + '?receiver&controls='+ ( controls || 'false' ) +'&progress=false&overview=false' + window.opener.location.hash;
- }
- var notesCurrentSlideURL = getNotesURL( true );
- var notesNextSlideURL = getNotesURL( false );
- </script>
-
- <div id="wrap-current-slide" class="slides">
- <script>document.write( '<iframe width="1280" height="1024" id="current-slide" src="'+ notesCurrentSlideURL +'"></iframe>' );</script>
- </div>
-
- <div id="wrap-next-slide" class="slides">
- <script>document.write( '<iframe width="640" height="512" id="next-slide" src="'+ notesNextSlideURL +'"></iframe>' );</script>
- <span>UPCOMING:</span>
- </div>
+ <div id="wrap-current-slide" class="slides"></div>
+ <div id="wrap-next-slide" class="slides"><span>UPCOMING:</span></div>
<div class="time">
<div class="clock">
@@ -171,37 +158,112 @@
<script src="../../plugin/markdown/marked.js"></script>
<script>
- window.addEventListener( 'load', function() {
+ (function() {
+
+ var notes,
+ currentState,
+ currentSlide,
+ nextSlide,
+ connected = false;
+
+ window.addEventListener( 'message', function( event ) {
+
+ var data = JSON.parse( event.data );
+
+ // 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 );
+ }
+ }
+ // 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|overviewshown|overviewhidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {
+ window.opener.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ]} ), '*' );
+ }
+ }
+
+ } );
+
+ /**
+ * Called when the main window is trying to establish a
+ * connection.
+ */
+ function handleConnectMessage( data ) {
+
+ if( connected === false ) {
+ connected = true;
+
+ setupIframes( data );
+ setupTimer();
+ }
- if( window.opener && window.opener.location && window.opener.location.href ) {
+ }
- var notes = document.getElementById( 'notes' ),
- currentSlide = document.getElementById( 'current-slide' ),
- nextSlide = document.getElementById( 'next-slide' ),
- silenced = false;
+ /**
+ * Called when the main window sends an updated state.
+ */
+ function handleStateMessage( data ) {
- window.addEventListener( 'message', function( event ) {
- var data = JSON.parse( event.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 !== undefined) {
- if( data.markdown ) {
- notes.innerHTML = marked( data.notes );
- }
- else {
- notes.innerHTML = data.notes;
- }
+ // No need for updating the notes in case of fragment changes
+ if ( data.notes !== undefined) {
+ if( data.markdown ) {
+ notes.innerHTML = marked( data.notes );
+ }
+ else {
+ notes.innerHTML = data.notes;
}
+ }
+
+ // Update the note slides
+ currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
+ nextSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
+ nextSlide.contentWindow.postMessage( JSON.stringify({ method: 'next' }), '*' );
- silenced = true;
+ }
- // Update the note slides
- currentSlide.contentWindow.Reveal.slide( data.indexh, data.indexv, data.indexf );
- nextSlide.contentWindow.Reveal.slide( data.nextindexh, data.nextindexv );
+ /**
+ * Creates the preview iframes.
+ */
+ function setupIframes( data ) {
- silenced = false;
+ notes = document.getElementById( 'notes' );
+
+ var url = data.url + '?receiver&progress=false&overview=false&history=false';
+ var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
+
+ currentSlide = document.createElement( 'iframe' );
+ currentSlide.setAttribute( 'id', 'current-slide' );
+ currentSlide.setAttribute( 'width', 1280 );
+ currentSlide.setAttribute( 'height', 1024 );
+ currentSlide.setAttribute( 'src', url + '&postMessageEvents=true' + hash );
+ document.querySelector( '#wrap-current-slide' ).appendChild( currentSlide );
+
+ nextSlide = document.createElement( 'iframe' );
+ nextSlide.setAttribute( 'id', 'next-slide' );
+ nextSlide.setAttribute( 'width', 640 );
+ nextSlide.setAttribute( 'height', 512 );
+ nextSlide.setAttribute( 'src', url + '&controls=false' + hash );
+ document.querySelector( '#wrap-next-slide' ).appendChild( nextSlide );
+
+ }
- }, false );
+ /**
+ * Create the timer and clock and start updating them
+ * at an interval.
+ */
+ function setupTimer() {
var start = new Date(),
timeEl = document.querySelector( '.time' ),
@@ -224,43 +286,23 @@
clockEl.innerHTML = now.toLocaleTimeString();
hoursEl.innerHTML = zeroPadInteger( hours );
- hoursEl.className = hours > 0 ? "" : "mute";
- minutesEl.innerHTML = ":" + zeroPadInteger( minutes );
- minutesEl.className = minutes > 0 ? "" : "mute";
- secondsEl.innerHTML = ":" + zeroPadInteger( seconds );
+ hoursEl.className = hours > 0 ? '' : 'mute';
+ minutesEl.innerHTML = ':' + zeroPadInteger( minutes );
+ minutesEl.className = minutes > 0 ? '' : 'mute';
+ secondsEl.innerHTML = ':' + zeroPadInteger( seconds );
}, 1000 );
- // Broadcasts the state of the notes window to synchronize
- // the main window
- function synchronizeMainWindow() {
-
- if( !silenced ) {
- var indices = currentSlide.contentWindow.Reveal.getIndices();
- window.opener.Reveal.slide( indices.h, indices.v, indices.f );
- }
-
- }
-
- // Navigate the main window when the notes slide changes
- currentSlide.contentWindow.Reveal.addEventListener( 'slidechanged', synchronizeMainWindow );
- currentSlide.contentWindow.Reveal.addEventListener( 'fragmentshown', synchronizeMainWindow );
- currentSlide.contentWindow.Reveal.addEventListener( 'fragmenthidden', synchronizeMainWindow );
-
}
- else {
-
- document.body.innerHTML = '<p class="error">Unable to access <code>window.opener.location</code>.<br>Make sure the presentation is running on a web server.</p>';
- }
+ function zeroPadInteger( num ) {
+ var str = '00' + parseInt( num );
+ return str.substring( str.length - 2 );
- }, false );
+ }
- function zeroPadInteger( num ) {
- var str = "00" + parseInt( num );
- return str.substring( str.length - 2 );
- }
+ })();
</script>
</body>
generated by cgit v1.2.3 (git 2.25.4) at 2024-05-10 09:41:01 +0000