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Merge pull request #58 from danielmitd/controls 

fix JS error when controls are removed from HTML
edit
Hakim El Hattab 2012-06-13 07:21:50 -07:00
parent a91d401919 9de23f022c
commit 2d44d1e25f
1 changed files with 26 additions and 15 deletions
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13
js/reveal.js
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@ -87,11 +87,14 @@ var Reveal = (function(){
dom.wrapper = document.querySelector( '.reveal' );
dom.progress = document.querySelector( '.reveal .progress' );
dom.progressbar = document.querySelector( '.reveal .progress span' );
if ( config.controls ) {
dom.controls = document.querySelector( '.reveal .controls' );
dom.controlsLeft = document.querySelector( '.reveal .controls .left' );
dom.controlsRight = document.querySelector( '.reveal .controls .right' );
dom.controlsUp = document.querySelector( '.reveal .controls .up' );
dom.controlsDown = document.querySelector( '.reveal .controls .down' );
}
addEventListeners();
@ -123,7 +126,7 @@ var Reveal = (function(){
config.transition = 'linear';
}
if( config.controls ) {
if( config.controls && dom.controls ) {
dom.controls.style.display = 'block';
}
@ -157,11 +160,13 @@ var Reveal = (function(){
document.addEventListener( 'touchend', onDocumentTouchEnd, false );
window.addEventListener( 'hashchange', onWindowHashChange, false );
if ( config.controls && dom.controls ) {
dom.controlsLeft.addEventListener( 'click', preventAndForward( navigateLeft ), false );
dom.controlsRight.addEventListener( 'click', preventAndForward( navigateRight ), false );
dom.controlsUp.addEventListener( 'click', preventAndForward( navigateUp ), false );
dom.controlsDown.addEventListener( 'click', preventAndForward( navigateDown ), false );
}
}
function removeEventListeners() {
document.removeEventListener( 'keydown', onDocumentKeyDown, false );
@ -170,11 +175,13 @@ var Reveal = (function(){
document.removeEventListener( 'touchend', onDocumentTouchEnd, false );
window.removeEventListener( 'hashchange', onWindowHashChange, false );
if ( config.controls && dom.controls ) {
dom.controlsLeft.removeEventListener( 'click', preventAndForward( navigateLeft ), false );
dom.controlsRight.removeEventListener( 'click', preventAndForward( navigateRight ), false );
dom.controlsUp.removeEventListener( 'click', preventAndForward( navigateUp ), false );
dom.controlsDown.removeEventListener( 'click', preventAndForward( navigateDown ), false );
}
}
/**
* Extend object a with the properties of object b.
@ -692,6 +699,10 @@ var Reveal = (function(){
* Updates the state and link pointers of the controls.
*/
function updateControls() {
if ( !config.controls || !dom.controls ) {
return;
}
var routes = availableRoutes();
// Remove the 'enabled' class from all directions