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move read/write url to location controller

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This commit is contained in:
Hakim El Hattab 2020-03-10 21:30:39 +01:00
parent 3683ad255d
commit e32f38740c
4 changed files with 116 additions and 109 deletions
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2
dist/reveal.min.js vendored
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File diff suppressed because one or more lines are too long

2
js/controllers/fragments.js
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@ -264,7 +264,7 @@ export default class Fragments {
this.Reveal.updateProgress();
if( this.Reveal.getConfig().fragmentInURL ) {
this.Reveal.writeURL();
this.Reveal.location.writeURL();
}
return !!( changedFragments.shown.length || changedFragments.hidden.length );

112
js/controllers/location.js
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@ -9,6 +9,113 @@ export default class Location {
this.Reveal = Reveal;
// Delays updates to the URL due to a Chrome thumbnailer bug
this.writeURLTimeout = 0;
}
/**
* Reads the current URL (hash) and navigates accordingly.
*/
readURL() {
let config = this.Reveal.getConfig();
let indices = this.Reveal.getIndices();
let currentSlide = this.Reveal.getCurrentSlide();
let hash = window.location.hash;
// Attempt to parse the hash as either an index or name
let bits = hash.slice( 2 ).split( '/' ),
name = hash.replace( /#|\//gi, '' );
// If the first bit is not fully numeric and there is a name we
// can assume that this is a named link
if( !/^[0-9]*$/.test( bits[0] ) && name.length ) {
let element;
// Ensure the named link is a valid HTML ID attribute
try {
element = document.getElementById( decodeURIComponent( name ) );
}
catch ( error ) { }
// Ensure that we're not already on a slide with the same name
let isSameNameAsCurrentSlide = currentSlide ? currentSlide.getAttribute( 'id' ) === name : false;
if( element ) {
// If the slide exists and is not the current slide...
if ( !isSameNameAsCurrentSlide ) {
// ...find the position of the named slide and navigate to it
let elementIndex = this.Reveal.getIndices(element);
this.Reveal.slide(elementIndex.h, elementIndex.v);
}
}
// If the slide doesn't exist, navigate to the current slide
else {
this.Reveal.slide( indices.h || 0, indices.v || 0 );
}
}
else {
let hashIndexBase = config.hashOneBasedIndex ? 1 : 0;
// Read the index components of the hash
let h = ( parseInt( bits[0], 10 ) - hashIndexBase ) || 0,
v = ( parseInt( bits[1], 10 ) - hashIndexBase ) || 0,
f;
if( config.fragmentInURL ) {
f = parseInt( bits[2], 10 );
if( isNaN( f ) ) {
f = undefined;
}
}
if( h !== indices.h || v !== indices.v || f !== undefined ) {
this.Reveal.slide( h, v, f );
}
}
}
/**
* Updates the page URL (hash) to reflect the current
* state.
*
* @param {number} delay The time in ms to wait before
* writing the hash
*/
writeURL( delay ) {
let config = this.Reveal.getConfig();
let currentSlide = this.Reveal.getCurrentSlide();
// Make sure there's never more than one timeout running
clearTimeout( this.writeURLTimeout );
// If a delay is specified, timeout this call
if( typeof delay === 'number' ) {
this.writeURLTimeout = setTimeout( this.writeURL, delay );
}
else if( currentSlide ) {
// If we're configured to push to history OR the history
// API is not avaialble.
if( config.history || !window.history ) {
window.location.hash = this.getHash();
}
// If we're configured to reflect the current slide in the
// URL without pushing to history.
else if( config.hash ) {
window.history.replaceState( null, null, '#' + this.getHash() );
}
// If history and hash are both disabled, a hash may still
// be added to the URL by clicking on a href with a hash
// target. Counter this by always removing the hash.
else {
window.history.replaceState( null, null, window.location.pathname + window.location.search );
}
}
}
/**
@ -16,12 +123,13 @@ export default class Location {
*
* @param {HTMLElement} [slide=currentSlide] The slide to link to
*/
getHash( slide = this.Reveal.getCurrentSlide() ) {
getHash( slide ) {
let url = '/';
// Attempt to create a named link based on the slide's ID
let id = slide ? slide.getAttribute( 'id' ) : null;
let s = slide || this.Reveal.getCurrentSlide();
let id = s ? s.getAttribute( 'id' ) : null;
if( id ) {
id = encodeURIComponent( id );
}

109
js/reveal.js
View file

@ -108,9 +108,6 @@ export default function( revealElement, options ) {
// Throttles mouse wheel navigation
lastMouseWheelStep = 0,
// Delays updates to the URL due to a Chrome thumbnailer bug
writeURLTimeout = 0,
// Is the mouse pointer currently hidden from view
cursorHidden = false,
@ -189,7 +186,7 @@ export default function( revealElement, options ) {
configure();
// Read the initial hash
readURL();
location.readURL();
// Update all backgrounds
updateBackground( true );
@ -1836,7 +1833,7 @@ export default function( revealElement, options ) {
fragments.update();
// Update the URL hash
writeURL();
location.writeURL();
cueAutoSlide();
@ -1886,7 +1883,7 @@ export default function( revealElement, options ) {
createBackgrounds();
// Write the current hash to the URL
writeURL();
location.writeURL();
fragments.sortAll();
@ -2639,103 +2636,6 @@ export default function( revealElement, options ) {
}
/**
* Reads the current URL (hash) and navigates accordingly.
*/
function readURL() {
let hash = window.location.hash;
// Attempt to parse the hash as either an index or name
let bits = hash.slice( 2 ).split( '/' ),
name = hash.replace( /#|\//gi, '' );
// If the first bit is not fully numeric and there is a name we
// can assume that this is a named link
if( !/^[0-9]*$/.test( bits[0] ) && name.length ) {
let element;
// Ensure the named link is a valid HTML ID attribute
try {
element = document.getElementById( decodeURIComponent( name ) );
}
catch ( error ) { }
// Ensure that we're not already on a slide with the same name
let isSameNameAsCurrentSlide = currentSlide ? currentSlide.getAttribute( 'id' ) === name : false;
if( element ) {
// If the slide exists and is not the current slide...
if ( !isSameNameAsCurrentSlide ) {
// ...find the position of the named slide and navigate to it
let indices = Reveal.getIndices(element);
slide(indices.h, indices.v);
}
}
// If the slide doesn't exist, navigate to the current slide
else {
slide( indexh || 0, indexv || 0 );
}
}
else {
let hashIndexBase = config.hashOneBasedIndex ? 1 : 0;
// Read the index components of the hash
let h = ( parseInt( bits[0], 10 ) - hashIndexBase ) || 0,
v = ( parseInt( bits[1], 10 ) - hashIndexBase ) || 0,
f;
if( config.fragmentInURL ) {
f = parseInt( bits[2], 10 );
if( isNaN( f ) ) {
f = undefined;
}
}
if( h !== indexh || v !== indexv || f !== undefined ) {
slide( h, v, f );
}
}
}
/**
* Updates the page URL (hash) to reflect the current
* state.
*
* @param {number} delay The time in ms to wait before
* writing the hash
*/
function writeURL( delay ) {
// Make sure there's never more than one timeout running
clearTimeout( writeURLTimeout );
// If a delay is specified, timeout this call
if( typeof delay === 'number' ) {
writeURLTimeout = setTimeout( writeURL, delay );
}
else if( currentSlide ) {
// If we're configured to push to history OR the history
// API is not avaialble.
if( config.history || !window.history ) {
window.location.hash = location.getHash();
}
// If we're configured to reflect the current slide in the
// URL without pushing to history.
else if( config.hash ) {
window.history.replaceState( null, null, '#' + location.getHash() );
}
// If history and hash are both disabled, a hash may still
// be added to the URL by clicking on a href with a hash
// target. Counter this by always removing the hash.
else {
window.history.replaceState( null, null, window.location.pathname + window.location.search );
}
}
}
/**
* Retrieves the h/v location and fragment of the current,
* or specified, slide.
@ -3498,7 +3398,7 @@ export default function( revealElement, options ) {
*/
function onWindowHashChange( event ) {
readURL();
location.readURL();
}
@ -3764,7 +3664,6 @@ export default function( revealElement, options ) {
updateControls,
updateProgress,
updateSlidesVisibility,
writeURL,
transformSlides,
cueAutoSlide,
cancelAutoSlide