rewrite fragment sorting to account for multiple fragments with the same index

This commit is contained in:
Hakim El Hattab 2013-11-25 14:45:14 -05:00
parent ef82645589
commit 3427561b64
4 changed files with 89 additions and 35 deletions

View file

@ -1043,27 +1043,48 @@ var Reveal = (function(){
*/ */
function sortFragments( fragments ) { function sortFragments( fragments ) {
var a = toArray( fragments ); fragments = toArray( fragments );
// Elements that do not have an explicit `data-fragment-index` var ordered = [],
// are given one which matches their order in the DOM unordered = [],
a.forEach( function( el, idx ) { sorted = [];
if( !el.hasAttribute( 'data-fragment-index' ) ) {
el.setAttribute( 'data-fragment-index', idx ); // Group ordered and unordered elements
fragments.forEach( function( fragment, i ) {
if( fragment.hasAttribute( 'data-fragment-index' ) ) {
var index = parseInt( fragment.getAttribute( 'data-fragment-index' ), 10 );
if( !ordered[index] ) {
ordered[index] = [];
}
ordered[index].push( fragment );
}
else {
unordered.push( [ fragment ] );
} }
} ); } );
a.sort( function( l, r ) { // Append fragments without explicit indices in their
return l.getAttribute( 'data-fragment-index' ) - r.getAttribute( 'data-fragment-index'); // DOM order
ordered = ordered.concat( unordered );
// Manually count the index up per group to ensure there
// are no gaps
var index = 0;
// Push all fragments in their sorted order to an array,
// this flattens the groups
ordered.forEach( function( group ) {
group.forEach( function( fragment ) {
sorted.push( fragment );
fragment.setAttribute( 'data-fragment-index', index );
} );
index ++;
} ); } );
// Set the indices to match the order of the sorted fragments, return sorted;
// ensures that we're 0-indexed and have no gaps
a.forEach( function( el, idx ) {
el.setAttribute( 'data-fragment-index', idx );
} );
return a;
} }
@ -3173,9 +3194,11 @@ var Reveal = (function(){
down: navigateDown, down: navigateDown,
prev: navigatePrev, prev: navigatePrev,
next: navigateNext, next: navigateNext,
// Fragment methods
navigateFragment: navigateFragment,
prevFragment: previousFragment, prevFragment: previousFragment,
nextFragment: nextFragment, nextFragment: nextFragment,
navigateFragment: navigateFragment,
// Deprecated aliases // Deprecated aliases
navigateTo: slide, navigateTo: slide,

4
js/reveal.min.js vendored

File diff suppressed because one or more lines are too long

View file

@ -35,13 +35,32 @@
</section> </section>
</section> </section>
<section> <section id="fragment-slides">
<h1>4</h1> <section>
<ul> <h1>3.1</h1>
<li class="fragment">4.1</li> <ul>
<li class="fragment">4.2</li> <li class="fragment">4.1</li>
<li class="fragment">4.3</li> <li class="fragment">4.2</li>
</ul> <li class="fragment">4.3</li>
</ul>
</section>
<section>
<h1>3.2</h1>
<ul>
<li class="fragment" data-fragment-index="0">4.1</li>
<li class="fragment" data-fragment-index="0">4.2</li>
</ul>
</section>
<section>
<h1>3.3</h1>
<ul>
<li class="fragment" data-fragment-index="1">3.3.1</li>
<li class="fragment" data-fragment-index="4">3.3.2</li>
<li class="fragment" data-fragment-index="4">3.3.3</li>
</ul>
</section>
</section> </section>
<section> <section>

View file

@ -5,6 +5,7 @@
// 1 // 1
// 2 - Three sub-slides // 2 - Three sub-slides
// 3 - Three fragment elements // 3 - Three fragment elements
// 3 - Two fragments with same data-fragment-index
// 4 // 4
@ -128,7 +129,7 @@ Reveal.addEventListener( 'ready', function() {
test( 'Reveal.next', function() { test( 'Reveal.next', function() {
Reveal.slide( 0, 0 ); Reveal.slide( 0, 0 );
// Step through the vertical child slides // Step through vertical child slides
Reveal.next(); Reveal.next();
deepEqual( Reveal.getIndices(), { h: 1, v: 0, f: undefined } ); deepEqual( Reveal.getIndices(), { h: 1, v: 0, f: undefined } );
@ -138,7 +139,7 @@ Reveal.addEventListener( 'ready', function() {
Reveal.next(); Reveal.next();
deepEqual( Reveal.getIndices(), { h: 1, v: 2, f: undefined } ); deepEqual( Reveal.getIndices(), { h: 1, v: 2, f: undefined } );
// There's fragments on this slide // Step through fragments
Reveal.next(); Reveal.next();
deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: -1 } ); deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: -1 } );
@ -150,11 +151,15 @@ Reveal.addEventListener( 'ready', function() {
Reveal.next(); Reveal.next();
deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 } ); deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 } );
});
test( 'Reveal.next at end', function() {
Reveal.slide( 3 );
// We're at the end, this should have no effect
Reveal.next(); Reveal.next();
deepEqual( Reveal.getIndices(), { h: 3, v: 0, f: undefined } ); deepEqual( Reveal.getIndices(), { h: 3, v: 0, f: undefined } );
// We're at the end, this should have no effect
Reveal.next(); Reveal.next();
deepEqual( Reveal.getIndices(), { h: 3, v: 0, f: undefined } ); deepEqual( Reveal.getIndices(), { h: 3, v: 0, f: undefined } );
}); });
@ -180,17 +185,17 @@ Reveal.addEventListener( 'ready', function() {
}); });
test( 'Hiding all fragments', function() { test( 'Hiding all fragments', function() {
var fragmentSlide = document.querySelector( '.reveal .slides>section:nth-child(3)' ); var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(1)' );
Reveal.slide( 2, 0, 0 ); Reveal.slide( 2, 0, 0 );
strictEqual( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 1, 'one fragment visible when index is 0' ); strictEqual( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 1, 'one fragment visible when index is 0' );
Reveal.slide( 2, 0, -1 ); Reveal.slide( 2, 0, -1 );
strictEqual( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 0, 'no fragments visible when index 0' ); strictEqual( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 0, 'no fragments visible when index is -1' );
}); });
test( 'Current fragment', function() { test( 'Current fragment', function() {
var fragmentSlide = document.querySelector( '.reveal .slides>section:nth-child(3)' ); var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(1)' );
Reveal.slide( 2, 0 ); Reveal.slide( 2, 0 );
strictEqual( fragmentSlide.querySelectorAll( '.fragment.current-fragment' ).length, 0, 'no current fragment at index -1' ); strictEqual( fragmentSlide.querySelectorAll( '.fragment.current-fragment' ).length, 0, 'no current fragment at index -1' );
@ -224,17 +229,17 @@ Reveal.addEventListener( 'ready', function() {
// backwards: // backwards:
Reveal.prev(); Reveal.prev();
deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 1 }, 'prev() goes to prev fragment' ); deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 2 }, 'prev() goes to prev fragment' );
Reveal.left(); Reveal.left();
deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 }, 'left() goes to prev fragment' ); deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 1 }, 'left() goes to prev fragment' );
Reveal.up(); Reveal.up();
deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: -1 }, 'up() goes to prev fragment' ); deepEqual( Reveal.getIndices(), { h: 2, v: 0, f: 0 }, 'up() goes to prev fragment' );
}); });
test( 'Stepping past fragments', function() { test( 'Stepping past fragments', function() {
var fragmentSlide = document.querySelector( '.reveal .slides>section:nth-child(3)' ); var fragmentSlide = document.querySelector( '#fragment-slides>section:first-child' );
Reveal.slide( 0, 0, 0 ); Reveal.slide( 0, 0, 0 );
equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 0, 'no fragments visible when on previous slide' ); equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 0, 'no fragments visible when on previous slide' );
@ -243,6 +248,13 @@ Reveal.addEventListener( 'ready', function() {
equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 3, 'all fragments visible when on future slide' ); equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 3, 'all fragments visible when on future slide' );
}); });
test( 'Fragment indices', function() {
var fragmentSlide = document.querySelector( '#fragment-slides>section:nth-child(2)' );
Reveal.slide( 3, 0, 0 );
equal( fragmentSlide.querySelectorAll( '.fragment.visible' ).length, 2, 'both fragments of same index are shown' );
});
asyncTest( 'fragmentshown event', function() { asyncTest( 'fragmentshown event', function() {
expect( 2 ); expect( 2 );