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Prefer W3C pointer events, remove pointerEnabled references (it is not part of the standard), unconditional event removal

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This commit is contained in:
Matt Rakow 2018-03-07 09:16:39 -08:00
parent 0282413b69
commit 389c3f52b5
1 changed files with 16 additions and 20 deletions
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36
js/reveal.js
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@ -1172,13 +1172,8 @@
window.addEventListener( 'resize', onWindowResize, false );
if( config.touch ) {
dom.wrapper.addEventListener( 'touchstart', onTouchStart, false );
dom.wrapper.addEventListener( 'touchmove', onTouchMove, false );
dom.wrapper.addEventListener( 'touchend', onTouchEnd, false );
// Support pointer-style touch interaction as well
if( window.navigator.pointerEnabled ) {
// IE 11 uses un-prefixed version of pointer events
if('onpointerdown' in window) {
// Use W3C pointer events
dom.wrapper.addEventListener( 'pointerdown', onPointerDown, false );
dom.wrapper.addEventListener( 'pointermove', onPointerMove, false );
dom.wrapper.addEventListener( 'pointerup', onPointerUp, false );
@ -1189,6 +1184,12 @@
dom.wrapper.addEventListener( 'MSPointerMove', onPointerMove, false );
dom.wrapper.addEventListener( 'MSPointerUp', onPointerUp, false );
}
else {
// Fall back to touch events
dom.wrapper.addEventListener( 'touchstart', onTouchStart, false );
dom.wrapper.addEventListener( 'touchmove', onTouchMove, false );
dom.wrapper.addEventListener( 'touchend', onTouchEnd, false );
}
}
if( config.keyboard ) {
@ -1251,23 +1252,18 @@
window.removeEventListener( 'hashchange', onWindowHashChange, false );
window.removeEventListener( 'resize', onWindowResize, false );
dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, false );
dom.wrapper.removeEventListener( 'pointermove', onPointerMove, false );
dom.wrapper.removeEventListener( 'pointerup', onPointerUp, false );
dom.wrapper.removeEventListener( 'MSPointerDown', onPointerDown, false );
dom.wrapper.removeEventListener( 'MSPointerMove', onPointerMove, false );
dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, false );
dom.wrapper.removeEventListener( 'touchstart', onTouchStart, false );
dom.wrapper.removeEventListener( 'touchmove', onTouchMove, false );
dom.wrapper.removeEventListener( 'touchend', onTouchEnd, false );
// IE11
if( window.navigator.pointerEnabled ) {
dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, false );
dom.wrapper.removeEventListener( 'pointermove', onPointerMove, false );
dom.wrapper.removeEventListener( 'pointerup', onPointerUp, false );
}
// IE10
else if( window.navigator.msPointerEnabled ) {
dom.wrapper.removeEventListener( 'MSPointerDown', onPointerDown, false );
dom.wrapper.removeEventListener( 'MSPointerMove', onPointerMove, false );
dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, false );
}
if ( config.progress && dom.progress ) {
dom.progress.removeEventListener( 'click', onProgressClicked, false );
}