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Adding support for hash linked slideNumber

edit
Sean Parent 2018-03-21 18:08:16 -07:00
parent 7991693bde
commit 443b4475bc
1 changed files with 39 additions and 26 deletions
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63
js/reveal.js
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@ -2189,6 +2189,32 @@
} }
/**
* Return a hash URL that will resolve to the current slide location.
*/
function locationHash() {
var url = '/';
// Attempt to create a named link based on the slide's ID
var id = currentSlide ? currentSlide.getAttribute( 'id' ) : null;
if( id ) {
id = id.replace( /[^a-zA-Z0-9\-\_\:\.]/g, '' );
}
// If the current slide has an ID, use that as a named link
if( typeof id === 'string' && id.length ) {
url = '/' + id;
}
// Otherwise use the /h/v index (adding 1 to match slide label)
else {
if( indexh > 0 || indexv > 0 ) url += indexh + 1;
if( indexv > 0 ) url += '/' + indexv + 1;
}
return url;
}
/** /**
* Checks if the current or specified slide is vertical * Checks if the current or specified slide is vertical
* (nested within another slide). * (nested within another slide).
@ -2853,6 +2879,7 @@
} }
/** /**
* Updates the slide number div to reflect the current slide. * Updates the slide number div to reflect the current slide.
* *
@ -2906,14 +2933,18 @@
* @return {string} HTML string fragment * @return {string} HTML string fragment
*/ */
function formatSlideNumber( a, delimiter, b ) { function formatSlideNumber( a, delimiter, b ) {
var url = '#' + locationHash();
if( typeof b === 'number' && !isNaN( b ) ) { if( typeof b === 'number' && !isNaN( b ) ) {
return '<span class="slide-number-a">'+ a +'</span>' + return '<a href="' + url + '">' +
'<span class="slide-number-a">'+ a +'</span>' +
'<span class="slide-number-delimiter">'+ delimiter +'</span>' + '<span class="slide-number-delimiter">'+ delimiter +'</span>' +
'<span class="slide-number-b">'+ b +'</span>'; '<span class="slide-number-b">'+ b +'</span>' +
'</a>';
} }
else { else {
return '<span class="slide-number-a">'+ a +'</span>'; return '<a href="' + url + '">' +
'<span class="slide-number-a">'+ a +'</span>' +
'</a>';
} }
} }
@ -3710,8 +3741,8 @@
} }
else { else {
// Read the index components of the hash // Read the index components of the hash
var h = parseInt( bits[0], 10 ) || 0, var h = (parseInt( bits[0], 10 ) || 0) - 1,
v = parseInt( bits[1], 10 ) || 0; v = (parseInt( bits[1], 10 ) || 0) - 1;
if( h !== indexh || v !== indexv ) { if( h !== indexh || v !== indexv ) {
slide( h, v ); slide( h, v );
@ -3739,25 +3770,7 @@
writeURLTimeout = setTimeout( writeURL, delay ); writeURLTimeout = setTimeout( writeURL, delay );
} }
else if( currentSlide ) { else if( currentSlide ) {
var url = '/'; window.location.hash = locationHash();
// Attempt to create a named link based on the slide's ID
var id = currentSlide.getAttribute( 'id' );
if( id ) {
id = id.replace( /[^a-zA-Z0-9\-\_\:\.]/g, '' );
}
// If the current slide has an ID, use that as a named link
if( typeof id === 'string' && id.length ) {
url = '/' + id;
}
// Otherwise use the /h/v index
else {
if( indexh > 0 || indexv > 0 ) url += indexh;
if( indexv > 0 ) url += '/' + indexv;
}
window.location.hash = url;
} }
} }