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merge and tweak key shortcuts overlay #943

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This commit is contained in:
Hakim El Hattab 2014-06-09 17:35:46 +02:00
parent d539c645c3
commit 9ff00a72ae
2 changed files with 192 additions and 188 deletions
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265
css/reveal.css
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115
js/reveal.js
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@ -199,13 +199,13 @@
},
// Holds information about the keyboard shortcuts
keyboard_shortcuts = {
'p': 'Previous slide',
'n': 'Next slide',
'h': 'Navigate left',
'l': 'Navigate right',
'k': 'Navigate up',
'j': 'Navigate down',
keyboardShortcuts = {
'P': 'Previous slide',
'N': 'Next slide',
'H': 'Navigate left',
'L': 'Navigate right',
'K': 'Navigate up',
'J': 'Navigate down',
'Home': 'First slide',
'End': 'Last slide',
'b': 'Pause',
@ -1233,15 +1233,16 @@
/**
* Opens a preview window for the target URL.
*/
function openPreview( url ) {
function showPreview( url ) {
closePreview();
closeOverlay();
dom.preview = document.createElement( 'div' );
dom.preview.classList.add( 'preview-link-overlay' );
dom.wrapper.appendChild( dom.preview );
dom.overlay = document.createElement( 'div' );
dom.overlay.classList.add( 'overlay' );
dom.overlay.classList.add( 'overlay-preview' );
dom.wrapper.appendChild( dom.overlay );
dom.preview.innerHTML = [
dom.overlay.innerHTML = [
'<header>',
'<a class="close" href="#"><span class="icon"></span></a>',
'<a class="external" href="'+ url +'" target="_blank"><span class="icon"></span></a>',
@ -1252,76 +1253,79 @@
'</div>'
].join('');
dom.preview.querySelector( 'iframe' ).addEventListener( 'load', function( event ) {
dom.preview.classList.add( 'loaded' );
dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', function( event ) {
dom.overlay.classList.add( 'loaded' );
}, false );
dom.preview.querySelector( '.close' ).addEventListener( 'click', function( event ) {
closePreview();
dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
closeOverlay();
event.preventDefault();
}, false );
dom.preview.querySelector( '.external' ).addEventListener( 'click', function( event ) {
closePreview();
dom.overlay.querySelector( '.external' ).addEventListener( 'click', function( event ) {
closeOverlay();
}, false );
setTimeout( function() {
dom.preview.classList.add( 'visible' );
dom.overlay.classList.add( 'visible' );
}, 1 );
}
/**
* Closes the iframe preview window.
* Opens a overlay window with help material.
*/
function closePreview() {
function showHelp() {
if( dom.preview ) {
dom.preview.setAttribute( 'src', '' );
dom.preview.parentNode.removeChild( dom.preview );
dom.preview = null;
closeOverlay();
dom.overlay = document.createElement( 'div' );
dom.overlay.classList.add( 'overlay' );
dom.overlay.classList.add( 'overlay-help' );
dom.wrapper.appendChild( dom.overlay );
var html = '<p class="title">Keyboard Shortcuts</p><br/>';
html += '<table><th>KEY</th><th>ACTION</th>';
for( var key in keyboardShortcuts ) {
html += '<tr><td>' + key + '</td><td>' + keyboardShortcuts[ key ] + '</td></tr>';
}
}
/**
* Opens a overlay window for the keyboard shortcuts.
*/
function openShortcutsOverlay() {
closePreview();
dom.preview = document.createElement( 'div' );
dom.preview.classList.add( 'preview-link-overlay' );
dom.wrapper.appendChild( dom.preview );
var html = '<h5>Keyboard Shortcuts</h5><br/>';
html += '<table> <th>KEY</th> <th>ACTION</th>';
for( var key in keyboard_shortcuts ) {
html += '<tr> <td>' + key + '</td> <td>' + keyboard_shortcuts[key] + '</td> </tr>'
}
html += '</table>';
dom.preview.innerHTML = [
dom.overlay.innerHTML = [
'<header>',
'<a class="close" href="#"><span class="icon"></span></a>',
'</header>',
'<div class="viewport">',
'<div class="shortcuts">'+html+'</div>',
'<div class="viewport-inner">'+ html +'</div>',
'</div>'
].join('');
dom.preview.querySelector( '.close' ).addEventListener( 'click', function( event ) {
closePreview();
dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
closeOverlay();
event.preventDefault();
}, false );
setTimeout( function() {
dom.preview.classList.add( 'visible' );
dom.overlay.classList.add( 'visible' );
}, 1 );
}
/**
* Closes any currently open overlay.
*/
function closeOverlay() {
if( dom.overlay ) {
dom.overlay.setAttribute( 'src', '' );
dom.overlay.parentNode.removeChild( dom.overlay );
dom.overlay = null;
}
}
/**
* Applies JavaScript-controlled layout rules to the
* presentation.
@ -3289,12 +3293,13 @@
/**
* Handler for the document level 'keypress' event.
*/
function onDocumentKeyPress( event ) {
// Check if the pressed key is question mark
if( event.shiftKey && event.charCode == 63 ) {
openShortcutsOverlay();
if( event.shiftKey && event.charCode === 63 ) {
showHelp();
}
}
/**
@ -3402,8 +3407,8 @@
}
// ESC or O key
else if ( ( event.keyCode === 27 || event.keyCode === 79 ) && features.transforms3d ) {
if( dom.preview ) {
closePreview();
if( dom.overlay ) {
closeOverlay();
}
else {
toggleOverview();
@ -3701,7 +3706,7 @@
var url = event.target.getAttribute( 'href' );
if( url ) {
openPreview( url );
showPreview( url );
event.preventDefault();
}