make plugins work with multiple presentations on same page

This commit is contained in:
Hakim El Hattab 2020-04-23 10:54:48 +02:00
parent 210fbb7646
commit b92d16f48d
9 changed files with 626 additions and 561 deletions

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@ -3,4 +3,4 @@
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2
dist/plugin/math.js vendored
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@ -3,5 +3,5 @@
* Handles finding a text string anywhere in the slides and showing the next occurrence to the user * 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 navigatating to that slide and highlighting it.
* *
* By Jon Snyder <snyder.jon@gmail.com>, February 2013 * @author Jon Snyder <snyder.jon@gmail.com>, February 2013
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@ -10,6 +10,7 @@
<link rel="stylesheet" href="../dist/reveal.css"> <link rel="stylesheet" href="../dist/reveal.css">
<link rel="stylesheet" href="../dist/theme/white.css" id="theme"> <link rel="stylesheet" href="../dist/theme/white.css" id="theme">
<link rel="stylesheet" href="../lib/css/monokai.css">
</head> </head>
<body style="background: #ddd;"> <body style="background: #ddd;">
@ -19,6 +20,14 @@
<div class="slides"> <div class="slides">
<section>Deck 1, Slide 1</section> <section>Deck 1, Slide 1</section>
<section>Deck 1, Slide 2</section> <section>Deck 1, Slide 2</section>
<section>
<pre data-id="code-animation"><code class="hljs" data-trim data-line-numbers>
import React, { useState } from 'react';
function Example() {
const [count, setCount] = useState(0);
}
</code></pre>
</section>
</div> </div>
</div> </div>
@ -26,16 +35,38 @@
<div class="slides"> <div class="slides">
<section>Deck 2, Slide 1</section> <section>Deck 2, Slide 1</section>
<section>Deck 2, Slide 2</section> <section>Deck 2, Slide 2</section>
<section data-markdown>
<script type="text/template">
## Markdown plugin
- 1
- 2
- 3
</script>
</section>
<section>
<h3>The Lorenz Equations</h3>
\[\begin{aligned}
\dot{x} &amp; = \sigma(y-x) \\
\dot{y} &amp; = \rho x - y - xz \\
\dot{z} &amp; = -\beta z + xy
\end{aligned} \]
</section>
</div> </div>
</div> </div>
</div> </div>
<script src="../dist/reveal.es5.js"></script> <script src="../dist/reveal.es5.js"></script>
<script src="../dist/plugin/highlight.js"></script>
<script src="../dist/plugin/markdown.js"></script>
<script src="../dist/plugin/math.js"></script>
<script> <script>
let deck1 = new Reveal( document.querySelector( '.deck1' ), { let deck1 = new Reveal( document.querySelector( '.deck1' ), {
embedded: true, embedded: true,
keyboard: false keyboard: false,
plugins: [ RevealHighlight ]
} ); } );
deck1.on( 'slidechanged', () => { deck1.on( 'slidechanged', () => {
console.log( 'Deck 1 slide changed' ); console.log( 'Deck 1 slide changed' );
@ -44,7 +75,8 @@
let deck2 = new Reveal( document.querySelector( '.deck2' ), { let deck2 = new Reveal( document.querySelector( '.deck2' ), {
embedded: true, embedded: true,
keyboard: false keyboard: true,
plugins: [ RevealMarkdown, RevealMath ]
} ); } );
deck2.initialize().then( () => { deck2.initialize().then( () => {
deck2.slide(1); deck2.slide(1);

View File

@ -13,14 +13,22 @@ let Plugin = {
HIGHLIGHT_LINE_DELIMITER: ',', HIGHLIGHT_LINE_DELIMITER: ',',
HIGHLIGHT_LINE_RANGE_DELIMITER: '-', HIGHLIGHT_LINE_RANGE_DELIMITER: '-',
init: function( deck ) { /**
* Highlights code blocks withing the given deck.
*
* Note that this can be called multiple times if
* there are multiple presentations on one page.
*
* @param {Reveal} reveal the reveal.js instance
*/
init: function( reveal ) {
// Read the plugin config options and provide fallbacks // Read the plugin config options and provide fallbacks
var config = deck.getConfig().highlight || {}; var config = reveal.getConfig().highlight || {};
config.highlightOnLoad = typeof config.highlightOnLoad === 'boolean' ? config.highlightOnLoad : true; config.highlightOnLoad = typeof config.highlightOnLoad === 'boolean' ? config.highlightOnLoad : true;
config.escapeHTML = typeof config.escapeHTML === 'boolean' ? config.escapeHTML : true; config.escapeHTML = typeof config.escapeHTML === 'boolean' ? config.escapeHTML : true;
[].slice.call( document.querySelectorAll( '.reveal pre code' ) ).forEach( function( block ) { [].slice.call( reveal.getRevealElement().querySelectorAll( 'pre code' ) ).forEach( function( block ) {
// Trim whitespace if the "data-trim" attribute is present // Trim whitespace if the "data-trim" attribute is present
if( block.hasAttribute( 'data-trim' ) && typeof block.innerHTML.trim === 'function' ) { if( block.hasAttribute( 'data-trim' ) && typeof block.innerHTML.trim === 'function' ) {
@ -45,8 +53,8 @@ let Plugin = {
// If we're printing to PDF, scroll the code highlights of // If we're printing to PDF, scroll the code highlights of
// all blocks in the deck into view at once // all blocks in the deck into view at once
deck.on( 'pdf-ready', function() { reveal.on( 'pdf-ready', function() {
[].slice.call( document.querySelectorAll( '.reveal pre code[data-line-numbers].current-fragment' ) ).forEach( function( block ) { [].slice.call( reveal.getRevealElement().querySelectorAll( 'pre code[data-line-numbers].current-fragment' ) ).forEach( function( block ) {
Plugin.scrollHighlightedLineIntoView( block, {}, true ); Plugin.scrollHighlightedLineIntoView( block, {}, true );
} ); } );
} ); } );

View File

@ -6,429 +6,435 @@
import marked from './marked.js' import marked from './marked.js'
let Plugin = { const DEFAULT_SLIDE_SEPARATOR = '^\r?\n---\r?\n$',
DEFAULT_NOTES_SEPARATOR = 'notes?:',
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$',
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = '\\\.slide:\\\s*?(\\\S.+?)$';
id: 'markdown', const SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__';
const Plugin = () => {
// The reveal.js instance this plugin is attached to
let deck;
/** /**
* Starts processing and converting Markdown within the * Retrieves the markdown contents of a slide section
* current reveal.js deck. * element. Normalizes leading tabs/whitespace.
*/ */
init: function( deck ) { function getMarkdownFromSlide( section ) {
// This should no longer be needed, as long as the highlight.js // look for a <script> or <textarea data-template> wrapper
// plugin is included after the markdown plugin var template = section.querySelector( '[data-template]' ) || section.querySelector( 'script' );
// if( typeof window.hljs !== 'undefined' ) {
// marked.setOptions({
// highlight: function( code, lang ) {
// return window.hljs.highlightAuto( code, lang ? [lang] : null ).value;
// }
// });
// }
// marked can be configured via reveal.js config options // strip leading whitespace so it isn't evaluated as code
var options = deck.getConfig().markdown; var text = ( template || section ).textContent;
if( options ) {
marked.setOptions( options ); // restore script end tags
text = text.replace( new RegExp( SCRIPT_END_PLACEHOLDER, 'g' ), '</script>' );
var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
if( leadingTabs > 0 ) {
text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
}
else if( leadingWs > 1 ) {
text = text.replace( new RegExp('\\n? {' + leadingWs + '}', 'g'), '\n' );
} }
return processSlides( deck.getRevealElement() ).then( convertSlides ); return text;
},
// TODO: Do these belong in the API?
processSlides: processSlides,
convertSlides: convertSlides,
slidify: slidify,
marked: marked
};
export default () => Plugin;
var DEFAULT_SLIDE_SEPARATOR = '^\r?\n---\r?\n$',
DEFAULT_NOTES_SEPARATOR = 'notes?:',
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$',
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = '\\\.slide:\\\s*?(\\\S.+?)$';
var SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__';
/**
* Retrieves the markdown contents of a slide section
* element. Normalizes leading tabs/whitespace.
*/
function getMarkdownFromSlide( section ) {
// look for a <script> or <textarea data-template> wrapper
var template = section.querySelector( '[data-template]' ) || section.querySelector( 'script' );
// strip leading whitespace so it isn't evaluated as code
var text = ( template || section ).textContent;
// restore script end tags
text = text.replace( new RegExp( SCRIPT_END_PLACEHOLDER, 'g' ), '</script>' );
var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
if( leadingTabs > 0 ) {
text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}','g'), '\n' );
}
else if( leadingWs > 1 ) {
text = text.replace( new RegExp('\\n? {' + leadingWs + '}', 'g'), '\n' );
} }
return text; /**
* Given a markdown slide section element, this will
* return all arguments that aren't related to markdown
* parsing. Used to forward any other user-defined arguments
* to the output markdown slide.
*/
function getForwardedAttributes( section ) {
} var attributes = section.attributes;
var result = [];
/** for( var i = 0, len = attributes.length; i < len; i++ ) {
* Given a markdown slide section element, this will var name = attributes[i].name,
* return all arguments that aren't related to markdown value = attributes[i].value;
* parsing. Used to forward any other user-defined arguments
* to the output markdown slide.
*/
function getForwardedAttributes( section ) {
var attributes = section.attributes; // disregard attributes that are used for markdown loading/parsing
var result = []; if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
for( var i = 0, len = attributes.length; i < len; i++ ) {
var name = attributes[i].name,
value = attributes[i].value;
// disregard attributes that are used for markdown loading/parsing
if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
if( value ) {
result.push( name + '="' + value + '"' );
}
else {
result.push( name );
}
}
return result.join( ' ' );
}
/**
* Inspects the given options and fills out default
* values for what's not defined.
*/
function getSlidifyOptions( options ) {
options = options || {};
options.separator = options.separator || DEFAULT_SLIDE_SEPARATOR;
options.notesSeparator = options.notesSeparator || DEFAULT_NOTES_SEPARATOR;
options.attributes = options.attributes || '';
return options;
}
/**
* Helper function for constructing a markdown slide.
*/
function createMarkdownSlide( content, options ) {
options = getSlidifyOptions( options );
var notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) );
if( notesMatch.length === 2 ) {
content = notesMatch[0] + '<aside class="notes">' + marked(notesMatch[1].trim()) + '</aside>';
}
// prevent script end tags in the content from interfering
// with parsing
content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER );
return '<script type="text/template">' + content + '</script>';
}
/**
* Parses a data string into multiple slides based
* on the passed in separator arguments.
*/
function slidify( markdown, options ) {
options = getSlidifyOptions( options );
var separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ),
horizontalSeparatorRegex = new RegExp( options.separator );
var matches,
lastIndex = 0,
isHorizontal,
wasHorizontal = true,
content,
sectionStack = [];
// iterate until all blocks between separators are stacked up
while( matches = separatorRegex.exec( markdown ) ) {
var notes = null;
// determine direction (horizontal by default)
isHorizontal = horizontalSeparatorRegex.test( matches[0] );
if( !isHorizontal && wasHorizontal ) {
// create vertical stack
sectionStack.push( [] );
}
// pluck slide content from markdown input
content = markdown.substring( lastIndex, matches.index );
if( isHorizontal && wasHorizontal ) {
// add to horizontal stack
sectionStack.push( content );
}
else {
// add to vertical stack
sectionStack[sectionStack.length-1].push( content );
}
lastIndex = separatorRegex.lastIndex;
wasHorizontal = isHorizontal;
}
// add the remaining slide
( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) );
var markdownSections = '';
// flatten the hierarchical stack, and insert <section data-markdown> tags
for( var i = 0, len = sectionStack.length; i < len; i++ ) {
// vertical
if( sectionStack[i] instanceof Array ) {
markdownSections += '<section '+ options.attributes +'>';
sectionStack[i].forEach( function( child ) {
markdownSections += '<section data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
} );
markdownSections += '</section>';
}
else {
markdownSections += '<section '+ options.attributes +' data-markdown>' + createMarkdownSlide( sectionStack[i], options ) + '</section>';
}
}
return markdownSections;
}
/**
* Parses any current data-markdown slides, splits
* multi-slide markdown into separate sections and
* handles loading of external markdown.
*/
function processSlides( scope ) {
return new Promise( function( resolve ) {
var externalPromises = [];
[].slice.call( scope.querySelectorAll( '[data-markdown]:not([data-markdown-parsed])') ).forEach( function( section, i ) {
if( section.getAttribute( 'data-markdown' ).length ) {
externalPromises.push( loadExternalMarkdown( section ).then(
// Finished loading external file
function( xhr, url ) {
section.outerHTML = slidify( xhr.responseText, {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
notesSeparator: section.getAttribute( 'data-separator-notes' ),
attributes: getForwardedAttributes( section )
});
},
// Failed to load markdown
function( xhr, url ) {
section.outerHTML = '<section data-state="alert">' +
'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' +
'Check your browser\'s JavaScript console for more details.' +
'<p>Remember that you need to serve the presentation HTML from a HTTP server.</p>' +
'</section>';
}
) );
}
else if( section.getAttribute( 'data-separator' ) || section.getAttribute( 'data-separator-vertical' ) || section.getAttribute( 'data-separator-notes' ) ) {
section.outerHTML = slidify( getMarkdownFromSlide( section ), {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
notesSeparator: section.getAttribute( 'data-separator-notes' ),
attributes: getForwardedAttributes( section )
});
if( value ) {
result.push( name + '="' + value + '"' );
} }
else { else {
section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) ); result.push( name );
} }
});
Promise.all( externalPromises ).then( resolve );
} );
}
function loadExternalMarkdown( section ) {
return new Promise( function( resolve, reject ) {
var xhr = new XMLHttpRequest(),
url = section.getAttribute( 'data-markdown' );
var datacharset = section.getAttribute( 'data-charset' );
// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
if( datacharset != null && datacharset != '' ) {
xhr.overrideMimeType( 'text/html; charset=' + datacharset );
} }
xhr.onreadystatechange = function( section, xhr ) { return result.join( ' ' );
if( xhr.readyState === 4 ) {
// file protocol yields status code 0 (useful for local debug, mobile applications etc.)
if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) {
resolve( xhr, url ); }
/**
* Inspects the given options and fills out default
* values for what's not defined.
*/
function getSlidifyOptions( options ) {
options = options || {};
options.separator = options.separator || DEFAULT_SLIDE_SEPARATOR;
options.notesSeparator = options.notesSeparator || DEFAULT_NOTES_SEPARATOR;
options.attributes = options.attributes || '';
return options;
}
/**
* Helper function for constructing a markdown slide.
*/
function createMarkdownSlide( content, options ) {
options = getSlidifyOptions( options );
var notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) );
if( notesMatch.length === 2 ) {
content = notesMatch[0] + '<aside class="notes">' + marked(notesMatch[1].trim()) + '</aside>';
}
// prevent script end tags in the content from interfering
// with parsing
content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER );
return '<script type="text/template">' + content + '</script>';
}
/**
* Parses a data string into multiple slides based
* on the passed in separator arguments.
*/
function slidify( markdown, options ) {
options = getSlidifyOptions( options );
var separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ),
horizontalSeparatorRegex = new RegExp( options.separator );
var matches,
lastIndex = 0,
isHorizontal,
wasHorizontal = true,
content,
sectionStack = [];
// iterate until all blocks between separators are stacked up
while( matches = separatorRegex.exec( markdown ) ) {
var notes = null;
// determine direction (horizontal by default)
isHorizontal = horizontalSeparatorRegex.test( matches[0] );
if( !isHorizontal && wasHorizontal ) {
// create vertical stack
sectionStack.push( [] );
}
// pluck slide content from markdown input
content = markdown.substring( lastIndex, matches.index );
if( isHorizontal && wasHorizontal ) {
// add to horizontal stack
sectionStack.push( content );
}
else {
// add to vertical stack
sectionStack[sectionStack.length-1].push( content );
}
lastIndex = separatorRegex.lastIndex;
wasHorizontal = isHorizontal;
}
// add the remaining slide
( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) );
var markdownSections = '';
// flatten the hierarchical stack, and insert <section data-markdown> tags
for( var i = 0, len = sectionStack.length; i < len; i++ ) {
// vertical
if( sectionStack[i] instanceof Array ) {
markdownSections += '<section '+ options.attributes +'>';
sectionStack[i].forEach( function( child ) {
markdownSections += '<section data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
} );
markdownSections += '</section>';
}
else {
markdownSections += '<section '+ options.attributes +' data-markdown>' + createMarkdownSlide( sectionStack[i], options ) + '</section>';
}
}
return markdownSections;
}
/**
* Parses any current data-markdown slides, splits
* multi-slide markdown into separate sections and
* handles loading of external markdown.
*/
function processSlides( scope ) {
return new Promise( function( resolve ) {
var externalPromises = [];
[].slice.call( scope.querySelectorAll( '[data-markdown]:not([data-markdown-parsed])') ).forEach( function( section, i ) {
if( section.getAttribute( 'data-markdown' ).length ) {
externalPromises.push( loadExternalMarkdown( section ).then(
// Finished loading external file
function( xhr, url ) {
section.outerHTML = slidify( xhr.responseText, {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
notesSeparator: section.getAttribute( 'data-separator-notes' ),
attributes: getForwardedAttributes( section )
});
},
// Failed to load markdown
function( xhr, url ) {
section.outerHTML = '<section data-state="alert">' +
'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' +
'Check your browser\'s JavaScript console for more details.' +
'<p>Remember that you need to serve the presentation HTML from a HTTP server.</p>' +
'</section>';
}
) );
}
else if( section.getAttribute( 'data-separator' ) || section.getAttribute( 'data-separator-vertical' ) || section.getAttribute( 'data-separator-notes' ) ) {
section.outerHTML = slidify( getMarkdownFromSlide( section ), {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
notesSeparator: section.getAttribute( 'data-separator-notes' ),
attributes: getForwardedAttributes( section )
});
} }
else { else {
section.innerHTML = createMarkdownSlide( getMarkdownFromSlide( section ) );
reject( xhr, url );
} }
}
}.bind( this, section, xhr );
xhr.open( 'GET', url, true ); });
try { Promise.all( externalPromises ).then( resolve );
xhr.send();
}
catch ( e ) {
console.warn( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e );
resolve( xhr, url );
}
} ); } );
}
/**
* Check if a node value has the attributes pattern.
* If yes, extract it and add that value as one or several attributes
* to the target element.
*
* You need Cache Killer on Chrome to see the effect on any FOM transformation
* directly on refresh (F5)
* http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277
*/
function addAttributeInElement( node, elementTarget, separator ) {
var mardownClassesInElementsRegex = new RegExp( separator, 'mg' );
var mardownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"]+?)\"|(data-[^\"= ]+?)(?=[\" ])", 'mg' );
var nodeValue = node.nodeValue;
var matches,
matchesClass;
if( matches = mardownClassesInElementsRegex.exec( nodeValue ) ) {
var classes = matches[1];
nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( mardownClassesInElementsRegex.lastIndex );
node.nodeValue = nodeValue;
while( matchesClass = mardownClassRegex.exec( classes ) ) {
if( matchesClass[2] ) {
elementTarget.setAttribute( matchesClass[1], matchesClass[2] );
} else {
elementTarget.setAttribute( matchesClass[3], "" );
}
}
return true;
} }
return false;
}
/** function loadExternalMarkdown( section ) {
* Add attributes to the parent element of a text node,
* or the element of an attribute node. return new Promise( function( resolve, reject ) {
*/
function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) { var xhr = new XMLHttpRequest(),
url = section.getAttribute( 'data-markdown' );
var datacharset = section.getAttribute( 'data-charset' );
// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
if( datacharset != null && datacharset != '' ) {
xhr.overrideMimeType( 'text/html; charset=' + datacharset );
}
xhr.onreadystatechange = function( section, xhr ) {
if( xhr.readyState === 4 ) {
// file protocol yields status code 0 (useful for local debug, mobile applications etc.)
if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) {
resolve( xhr, url );
if ( element != null && element.childNodes != undefined && element.childNodes.length > 0 ) {
var previousParentElement = element;
for( var i = 0; i < element.childNodes.length; i++ ) {
var childElement = element.childNodes[i];
if ( i > 0 ) {
var j = i - 1;
while ( j >= 0 ) {
var aPreviousChildElement = element.childNodes[j];
if ( typeof aPreviousChildElement.setAttribute == 'function' && aPreviousChildElement.tagName != "BR" ) {
previousParentElement = aPreviousChildElement;
break;
} }
j = j - 1; else {
reject( xhr, url );
}
}
}.bind( this, section, xhr );
xhr.open( 'GET', url, true );
try {
xhr.send();
}
catch ( e ) {
console.warn( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e );
resolve( xhr, url );
}
} );
}
/**
* Check if a node value has the attributes pattern.
* If yes, extract it and add that value as one or several attributes
* to the target element.
*
* You need Cache Killer on Chrome to see the effect on any FOM transformation
* directly on refresh (F5)
* http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277
*/
function addAttributeInElement( node, elementTarget, separator ) {
var mardownClassesInElementsRegex = new RegExp( separator, 'mg' );
var mardownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"]+?)\"|(data-[^\"= ]+?)(?=[\" ])", 'mg' );
var nodeValue = node.nodeValue;
var matches,
matchesClass;
if( matches = mardownClassesInElementsRegex.exec( nodeValue ) ) {
var classes = matches[1];
nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( mardownClassesInElementsRegex.lastIndex );
node.nodeValue = nodeValue;
while( matchesClass = mardownClassRegex.exec( classes ) ) {
if( matchesClass[2] ) {
elementTarget.setAttribute( matchesClass[1], matchesClass[2] );
} else {
elementTarget.setAttribute( matchesClass[3], "" );
} }
} }
var parentSection = section; return true;
if( childElement.nodeName == "section" ) { }
parentSection = childElement ; return false;
previousParentElement = childElement ; }
/**
* Add attributes to the parent element of a text node,
* or the element of an attribute node.
*/
function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) {
if ( element != null && element.childNodes != undefined && element.childNodes.length > 0 ) {
var previousParentElement = element;
for( var i = 0; i < element.childNodes.length; i++ ) {
var childElement = element.childNodes[i];
if ( i > 0 ) {
var j = i - 1;
while ( j >= 0 ) {
var aPreviousChildElement = element.childNodes[j];
if ( typeof aPreviousChildElement.setAttribute == 'function' && aPreviousChildElement.tagName != "BR" ) {
previousParentElement = aPreviousChildElement;
break;
}
j = j - 1;
}
}
var parentSection = section;
if( childElement.nodeName == "section" ) {
parentSection = childElement ;
previousParentElement = childElement ;
}
if ( typeof childElement.setAttribute == 'function' || childElement.nodeType == Node.COMMENT_NODE ) {
addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes );
}
} }
if ( typeof childElement.setAttribute == 'function' || childElement.nodeType == Node.COMMENT_NODE ) { }
addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes );
if ( element.nodeType == Node.COMMENT_NODE ) {
if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) == false ) {
addAttributeInElement( element, section, separatorSectionAttributes );
} }
} }
} }
if ( element.nodeType == Node.COMMENT_NODE ) { /**
if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) == false ) { * Converts any current data-markdown slides in the
addAttributeInElement( element, section, separatorSectionAttributes ); * DOM to HTML.
} */
function convertSlides() {
var sections = deck.getRevealElement().querySelectorAll( '[data-markdown]:not([data-markdown-parsed])');
[].slice.call( sections ).forEach( function( section ) {
section.setAttribute( 'data-markdown-parsed', true )
var notes = section.querySelector( 'aside.notes' );
var markdown = getMarkdownFromSlide( section );
section.innerHTML = marked( markdown );
addAttributes( section, section, null, section.getAttribute( 'data-element-attributes' ) ||
section.parentNode.getAttribute( 'data-element-attributes' ) ||
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR,
section.getAttribute( 'data-attributes' ) ||
section.parentNode.getAttribute( 'data-attributes' ) ||
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR);
// If there were notes, we need to re-add them after
// having overwritten the section's HTML
if( notes ) {
section.appendChild( notes );
}
} );
return Promise.resolve();
} }
}
/** return {
* Converts any current data-markdown slides in the id: 'markdown',
* DOM to HTML.
*/
function convertSlides() {
var sections = document.querySelectorAll( '[data-markdown]:not([data-markdown-parsed])'); /**
* Starts processing and converting Markdown within the
* current reveal.js deck.
*/
init: function( reveal ) {
[].slice.call( sections ).forEach( function( section ) { deck = reveal;
section.setAttribute( 'data-markdown-parsed', true ) // This should no longer be needed, as long as the highlight.js
// plugin is included after the markdown plugin
// if( typeof window.hljs !== 'undefined' ) {
// marked.setOptions({
// highlight: function( code, lang ) {
// return window.hljs.highlightAuto( code, lang ? [lang] : null ).value;
// }
// });
// }
var notes = section.querySelector( 'aside.notes' ); // marked can be configured via reveal.js config options
var markdown = getMarkdownFromSlide( section ); var options = deck.getConfig().markdown;
if( options ) {
marked.setOptions( options );
}
section.innerHTML = marked( markdown ); return processSlides( deck.getRevealElement() ).then( convertSlides );
addAttributes( section, section, null, section.getAttribute( 'data-element-attributes' ) ||
section.parentNode.getAttribute( 'data-element-attributes' ) ||
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR,
section.getAttribute( 'data-attributes' ) ||
section.parentNode.getAttribute( 'data-attributes' ) ||
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR);
// If there were notes, we need to re-add them after },
// having overwritten the section's HTML
if( notes ) {
section.appendChild( notes );
}
} ); // TODO: Do these belong in the API?
processSlides: processSlides,
convertSlides: convertSlides,
slidify: slidify,
marked: marked
}
return Promise.resolve(); };
} export default Plugin;

View File

@ -4,14 +4,12 @@
* *
* @author Hakim El Hattab * @author Hakim El Hattab
*/ */
let Plugin = (function(){ const Plugin = () => {
var options = Reveal.getConfig().math || {}; // The reveal.js instance this plugin is attached to
var mathjax = options.mathjax || 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js'; let deck;
var config = options.config || 'TeX-AMS_HTML-full';
var url = mathjax + '?config=' + config;
var defaultOptions = { let defaultOptions = {
messageStyle: 'none', messageStyle: 'none',
tex2jax: { tex2jax: {
inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ], inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ],
@ -20,25 +18,15 @@ let Plugin = (function(){
skipStartupTypeset: true skipStartupTypeset: true
}; };
function defaults( options, defaultOptions ) {
for ( var i in defaultOptions ) {
if ( !options.hasOwnProperty( i ) ) {
options[i] = defaultOptions[i];
}
}
}
function loadScript( url, callback ) { function loadScript( url, callback ) {
var head = document.querySelector( 'head' ); let head = document.querySelector( 'head' );
var script = document.createElement( 'script' ); let script = document.createElement( 'script' );
script.type = 'text/javascript'; script.type = 'text/javascript';
script.src = url; script.src = url;
// Wrapper for callback to make sure it only fires once // Wrapper for callback to make sure it only fires once
var finish = function() { let finish = () => {
if( typeof callback === 'function' ) { if( typeof callback === 'function' ) {
callback.call(); callback.call();
callback = null; callback = null;
@ -48,7 +36,7 @@ let Plugin = (function(){
script.onload = finish; script.onload = finish;
// IE // IE
script.onreadystatechange = function() { script.onreadystatechange = () => {
if ( this.readyState === 'loaded' ) { if ( this.readyState === 'loaded' ) {
finish(); finish();
} }
@ -62,10 +50,19 @@ let Plugin = (function(){
return { return {
id: 'math', id: 'math',
init: function( deck ) { init: function( reveal ) {
deck = reveal;
let revealOptions = deck.getConfig().math || {};
let options = { ...defaultOptions, ...revealOptions };
let mathjax = options.mathjax || 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js';
let config = options.config || 'TeX-AMS_HTML-full';
let url = mathjax + '?config=' + config;
options.tex2jax = { ...defaultOptions.tex2jax, ...revealOptions.tex2jax };
defaults( options, defaultOptions );
defaults( options.tex2jax, defaultOptions.tex2jax );
options.mathjax = options.config = null; options.mathjax = options.config = null;
loadScript( url, function() { loadScript( url, function() {
@ -74,7 +71,7 @@ let Plugin = (function(){
// Typeset followed by an immediate reveal.js layout since // Typeset followed by an immediate reveal.js layout since
// the typesetting process could affect slide height // the typesetting process could affect slide height
MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub ] ); MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub, deck.getRevealElement() ] );
MathJax.Hub.Queue( deck.layout ); MathJax.Hub.Queue( deck.layout );
// Reprocess equations in slides when they turn visible // Reprocess equations in slides when they turn visible
@ -89,6 +86,6 @@ let Plugin = (function(){
} }
} }
})(); };
export default () => Plugin; export default Plugin;

View File

@ -2,130 +2,89 @@
* Handles finding a text string anywhere in the slides and showing the next occurrence to the user * 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 navigatating to that slide and highlighting it.
* *
* By Jon Snyder <snyder.jon@gmail.com>, February 2013 * @author Jon Snyder <snyder.jon@gmail.com>, February 2013
*/ */
var Plugin = (function() { const Plugin = () => {
var matchedSlides; // The reveal.js instance this plugin is attached to
var currentMatchedIndex; let deck;
var searchboxDirty;
var myHilitor;
// Original JavaScript code by Chirp Internet: www.chirp.com.au let searchElement;
// Please acknowledge use of this code by including this header. let searchButton;
// 2/2013 jon: modified regex to display any match, not restricted to word boundaries. let searchInput;
function Hilitor(id, tag) let matchedSlides;
{ let currentMatchedIndex;
let searchboxDirty;
let hilitor;
var targetNode = document.getElementById(id) || document.body; function render() {
var hiliteTag = tag || "EM";
var skipTags = new RegExp("^(?:" + hiliteTag + "|SCRIPT|FORM)$");
var colors = ["#ff6", "#a0ffff", "#9f9", "#f99", "#f6f"];
var wordColor = [];
var colorIdx = 0;
var matchRegex = "";
var matchingSlides = [];
this.setRegex = function(input) searchElement = document.createElement( 'div' );
{ searchElement.classList.add( 'searchbox' );
input = input.replace(/^[^\w]+|[^\w]+$/g, "").replace(/[^\w'-]+/g, "|"); searchElement.style.position = 'absolute';
matchRegex = new RegExp("(" + input + ")","i"); searchElement.style.top = '10px';
} searchElement.style.right = '10px';
searchElement.style.zIndex = 10;
this.getRegex = function() //embedded base64 search icon Designed by Sketchdock - http://www.sketchdock.com/:
{ searchElement.innerHTML = `<input type="search" class="searchinput" placeholder="Search..." style="vertical-align: top;"/>
return matchRegex.toString().replace(/^\/\\b\(|\)\\b\/i$/g, "").replace(/\|/g, " "); </span>`;
}
// recursively apply word highlighting searchInput = searchElement.querySelector( '.searchinput' );
this.hiliteWords = function(node) searchInput.style.width = '240px';
{ searchInput.style.fontSize = '14px';
if(node == undefined || !node) return; searchInput.style.padding = '4px 6px';
if(!matchRegex) return; searchInput.style.color = '#000';
if(skipTags.test(node.nodeName)) return; searchInput.style.background = '#fff';
searchInput.style.borderRadius = '2px';
searchInput.style.border = '0';
searchInput.style.outline = '0';
searchInput.style.boxShadow = '0 2px 18px rgba(0, 0, 0, 0.2)';
searchInput.style['-webkit-appearance'] = 'none';
if(node.hasChildNodes()) { deck.getRevealElement().appendChild( searchElement );
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;
while (secnode != null && secnode.nodeName != 'SECTION') {
secnode = secnode.parentNode;
}
var slideIndex = Reveal.getIndices(secnode); // searchButton.addEventListener( 'click', function(event) {
var slidelen = matchingSlides.length; // doSearch();
var alreadyAdded = false; // }, 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()]) { searchInput.addEventListener( 'keyup', function( event ) {
wordColor[regs[0].toLowerCase()] = colors[colorIdx++ % colors.length]; switch (event.keyCode) {
} case 13:
event.preventDefault();
var match = document.createElement(hiliteTag); doSearch();
match.appendChild(document.createTextNode(regs[0])); searchboxDirty = false;
match.style.backgroundColor = wordColor[regs[0].toLowerCase()]; break;
match.style.fontStyle = "inherit"; default:
match.style.color = "#000"; searchboxDirty = true;
var after = node.splitText(regs.index);
after.nodeValue = after.nodeValue.substring(regs[0].length);
node.parentNode.insertBefore(match, after);
} }
} }, false );
};
// remove highlighting closeSearch();
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() { function openSearch() {
//ensure the search term input dialog is visible and has focus: if( !searchElement ) render();
var inputboxdiv = document.getElementById("searchinputdiv");
var inputbox = document.getElementById("searchinput"); searchElement.style.display = 'inline';
inputboxdiv.style.display = "inline"; searchInput.focus();
inputbox.focus(); searchInput.select();
inputbox.select();
} }
function closeSearch() { function closeSearch() {
var inputboxdiv = document.getElementById("searchinputdiv"); if( !searchElement ) render();
inputboxdiv.style.display = "none";
if(myHilitor) myHilitor.remove(); searchElement.style.display = 'none';
if(hilitor) hilitor.remove();
} }
function toggleSearch() { function toggleSearch() {
var inputboxdiv = document.getElementById("searchinputdiv"); if( !searchElement ) render();
if (inputboxdiv.style.display !== "inline") {
if (searchElement.style.display !== 'inline') {
openSearch(); openSearch();
} }
else { else {
@ -136,16 +95,16 @@ function Hilitor(id, tag)
function doSearch() { function doSearch() {
//if there's been a change in the search term, perform a new search: //if there's been a change in the search term, perform a new search:
if (searchboxDirty) { if (searchboxDirty) {
var searchstring = document.getElementById("searchinput").value; var searchstring = searchInput.value;
if (searchstring === '') { if (searchstring === '') {
if(myHilitor) myHilitor.remove(); if(hilitor) hilitor.remove();
matchedSlides = null; matchedSlides = null;
} }
else { else {
//find the keyword amongst the slides //find the keyword amongst the slides
myHilitor = new Hilitor("slidecontent"); hilitor = new Hilitor("slidecontent");
matchedSlides = myHilitor.apply(searchstring); matchedSlides = hilitor.apply(searchstring);
currentMatchedIndex = 0; currentMatchedIndex = 0;
} }
} }
@ -156,66 +115,129 @@ function Hilitor(id, tag)
currentMatchedIndex = 0; currentMatchedIndex = 0;
} }
if (matchedSlides.length > currentMatchedIndex) { if (matchedSlides.length > currentMatchedIndex) {
Reveal.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v); deck.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v);
currentMatchedIndex++; currentMatchedIndex++;
} }
} }
} }
var dom = {}; // Original JavaScript code by Chirp Internet: www.chirp.com.au
dom.wrapper = document.querySelector( '.reveal' ); // 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)$");
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
var nv, regs;
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;
while (secnode != null && secnode.nodeName != 'SECTION') {
secnode = secnode.parentNode;
}
var slideIndex = deck.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);
var el;
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;
};
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.right = '10px';
searchElement.style.zIndex = 10;
//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 );
document.addEventListener( 'keydown', function( event ) {
if( event.key == "F" && (event.ctrlKey || event.metaKey) ) { //Control+Shift+f
event.preventDefault();
toggleSearch();
}
}, false );
closeSearch();
return { return {
id: 'search', id: 'search',
init: reveal => { init: reveal => {
reveal.registerKeyboardShortcut( 'CTRL + Shift + F', 'Search' ); deck = reveal;
deck.registerKeyboardShortcut( 'CTRL + Shift + F', 'Search' );
document.addEventListener( 'keydown', function( event ) {
if( event.key == "F" && (event.ctrlKey || event.metaKey) ) { //Control+Shift+f
event.preventDefault();
toggleSearch();
}
}, false );
}, },
open: openSearch open: openSearch
} }
})(); };
export default () => Plugin; export default Plugin;