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notes plugin now operates entirely through window.postMessage, adding support for file protocol

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This commit is contained in:
Hakim El Hattab
2014-04-19 10:54:14 +02:00
parent ce31184bf3
commit 5b18c1f308
2 changed files with 168 additions and 96 deletions
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176
plugin/notes/notes.html
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@ -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() {
if( window.opener && window.opener.location && window.opener.location.href ) {
var notes,
currentState,
currentSlide,
nextSlide,
connected = false;
var notes = document.getElementById( 'notes' ),
currentSlide = document.getElementById( 'current-slide' ),
nextSlide = document.getElementById( 'next-slide' ),
silenced = false;
window.addEventListener( 'message', function( event ) {
window.addEventListener( 'message', function( event ) {
var data = JSON.parse( event.data );
var data = JSON.parse( event.data );
// 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;
}
// 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 ]} ), '*' );
}
}
silenced = true;
} );
// Update the note slides
currentSlide.contentWindow.Reveal.slide( data.indexh, data.indexv, data.indexf );
nextSlide.contentWindow.Reveal.slide( data.nextindexh, data.nextindexv );
/**
* Called when the main window is trying to establish a
* connection.
*/
function handleConnectMessage( data ) {
silenced = false;
if( connected === false ) {
connected = true;
}, false );
setupIframes( data );
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 !== 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' }), '*' );
}
/**
* Creates the preview iframes.
*/
function setupIframes( data ) {
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 );
}
/**
* 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>