Add inner navigation feature. Closes #4.

This commit is contained in:
Oleg Roschupkin 2011-08-10 01:47:32 +09:00
parent bb7407a0e7
commit df3401ed9d
2 changed files with 137 additions and 77 deletions

4
en.htm
View File

@ -172,7 +172,7 @@
After activation of the last child pressing next
button will turn next slide.
-->
<div class="slide" id="InnerNavigation"><div>
<section>
<header>
@ -185,7 +185,7 @@
<li>Erase your hard drive.</li>
</ol>
</section>
</div></div> -->
</div></div>
<div class="slide" id="ThankYou"><div>
<section>
<header>

View File

@ -4,11 +4,13 @@
slides = document.querySelectorAll('div.slide'),
progress = document.querySelector('div.progress div'),
slideList = [],
l = slides.length,
i;
l = slides.length, i;
for (i = 0; i < l; i++) {
slideList.push(slides[i].id);
slideList.push({
id: slides[i].id,
hasInnerNavigation: null !== slides[i].querySelector('.inner')
});
}
function getTransform() {
@ -28,62 +30,73 @@
body.style.transform = transform;
}
function enterSingleSlideMode() {
function enterSlideMode() {
body.className = 'full';
applyTransform(getTransform());
}
function enterSlideListMode() {
function enterListMode() {
body.className = 'list';
applyTransform('none');
}
function getCurrentSlideNumber() {
return slideList.indexOf(url.hash.substr(1));
var i, l = slideList.length,
currentSlideId = url.hash.substr(1);
for (i = 0; i < l; ++i) {
if (currentSlideId === slideList[i].id) {
return i;
}
}
return -1;
}
function scrollToCurrentSlide() {
var current_slide = document.getElementById(slideList[getCurrentSlideNumber()]);
var currentSlide = document.getElementById(
slideList[getCurrentSlideNumber()].id
);
if (null != current_slide) {
window.scrollTo(0, current_slide.offsetTop);
if (null != currentSlide) {
window.scrollTo(0, currentSlide.offsetTop);
}
}
function isSlideListMode() {
function isListMode() {
return 'full' !== url.search.substr(1);
}
function normalizeSlideNumber(slide_number) {
if (0 > slide_number) {
function normalizeSlideNumber(slideNumber) {
if (0 > slideNumber) {
return slideList.length - 1;
} else if (slideList.length <= slide_number) {
} else if (slideList.length <= slideNumber) {
return 0;
} else {
return slide_number;
return slideNumber;
}
}
function updateProgress(slide_number) {
if (!progress) return;
progress.style.width = (100 / (slideList.length - 1) * normalizeSlideNumber(slide_number)).toFixed(2) + '%';
function updateProgress(slideNumber) {
if (null === progress) { return; }
progress.style.width = (100 / (slideList.length - 1) * normalizeSlideNumber(slideNumber)).toFixed(2) + '%';
}
function getSlideHashByNumber(slide_number) {
return '#' + slideList[normalizeSlideNumber(slide_number)];
function getSlideHash(slideNumber) {
return '#' + slideList[normalizeSlideNumber(slideNumber)].id;
}
function goToSlide(slide_number) {
url.hash = getSlideHashByNumber(slide_number);
function goToSlide(slideNumber) {
url.hash = getSlideHash(slideNumber);
if (!isSlideListMode()) {
updateProgress(slide_number);
if (!isListMode()) {
updateProgress(slideNumber);
}
}
function getContainingSlideId(el) {
var node = el;
while ('BODY' !== node.nodeName) {
while ('BODY' !== node.nodeName && 'HTML' !== node.nodeName) {
if (-1 !== node.className.indexOf('slide')) {
return node.id;
} else {
@ -97,78 +110,111 @@
function dispatchSingleSlideMode(e) {
var slideId = getContainingSlideId(e.target);
if ('' !== slideId && isSlideListMode()) {
if ('' !== slideId && isListMode()) {
e.preventDefault();
// NOTE: we should update hash to get things work properly
url.hash = '#' + slideId;
history.replaceState(null, null, url.pathname + '?full#' + slideId);
enterSingleSlideMode();
enterSlideMode();
updateProgress(getCurrentSlideNumber());
}
}
window.addEventListener('DOMContentLoaded', function () {
if (!isSlideListMode()) {
// "?full" is present without slide hash so we should display first
// slide
if ( -1 === getCurrentSlideNumber() ) {
history.replaceState(null, null, url.pathname + '?full' + getSlideHashByNumber( 0 ) );
// Increases inner navigation by adding 'active' class to next inactive
// inner navigation item.
function increaseInnerNavigation(slideNumber) {
// Shortcut for slides without inner navigation
if (true !== slideList[slideNumber].hasInnerNavigation) { return -1; }
var activeNodes = document.querySelectorAll(getSlideHash(slideNumber) + ' .active'),
// NOTE: we assume there is no other elements in inner navigation
node = activeNodes[activeNodes.length - 1].nextElementSibling;
if (null !== node) {
node.classList.add('active');
// NOTE: 'auto-added' class is used in resetInnerNavigation - to
// overcome problems with manually added 'active' class.
node.classList.add('auto-added');
return activeNodes.length + 1;
} else {
return -1;
}
}
enterSingleSlideMode();
// Resets inner navigation by removing 'active' class from all previously
// activated elements.
function resetInnerNavigation(slideNumber) {
// Shortcut for slides without inner navigation
if (true !== slideList[slideNumber].hasInnerNavigation) { return; }
var activeNodes = document.querySelectorAll(
getSlideHash(slideNumber) + ' .active.auto-added'
),
i = 0, l;
for (l = activeNodes.length; i < l; i++) {
activeNodes[i].classList.remove('active');
activeNodes[i].classList.remove('auto-added');
}
}
// Event handlers
window.addEventListener('DOMContentLoaded', function () {
if (!isListMode()) {
// "?full" is present without slide hash, so we should display first
// slide
if (-1 === getCurrentSlideNumber()) {
history.replaceState(null, null, url.pathname + '?full' + getSlideHash(0));
}
enterSlideMode();
updateProgress(getCurrentSlideNumber());
}
}, false);
window.addEventListener('popstate', function (e) {
if (isSlideListMode()) {
enterSlideListMode();
if (isListMode()) {
enterListMode();
scrollToCurrentSlide();
} else {
enterSingleSlideMode();
enterSlideMode();
}
}, false);
window.addEventListener('resize', function (e) {
if (!isSlideListMode()) {
if (!isListMode()) {
applyTransform(getTransform());
}
}, false);
document.addEventListener('keydown', function (e) {
if (e.altKey || e.ctrlKey || e.metaKey) return;
// Shortcut for alt, shift and meta keys
if (e.altKey || e.ctrlKey || e.metaKey) { return; }
var current_slide_number = getCurrentSlideNumber();
var currentSlideNumber = getCurrentSlideNumber();
switch (e.which) {
case 9: // Tab = +1; Shift + Tab = -1
if (isSlideListMode()) {
e.preventDefault();
current_slide_number += e.shiftKey ? -1 : 1;
url.hash = getSlideHashByNumber(current_slide_number);
}
break;
case 13: // Enter
if (isSlideListMode()) {
if (isListMode()) {
e.preventDefault();
history.pushState(null, null, url.pathname + '?full' + getSlideHashByNumber(current_slide_number));
enterSingleSlideMode();
history.pushState(null, null, url.pathname + '?full' + getSlideHash(currentSlideNumber));
enterSlideMode();
updateProgress(current_slide_number);
updateProgress(currentSlideNumber);
}
break;
case 27: // Esc
if (!isSlideListMode()) {
if (!isListMode()) {
e.preventDefault();
history.pushState(null, null, url.pathname + getSlideHashByNumber(current_slide_number));
enterSlideListMode();
history.pushState(null, null, url.pathname + getSlideHash(currentSlideNumber));
enterListMode();
scrollToCurrentSlide();
}
break;
@ -180,8 +226,9 @@
case 75: // k
e.preventDefault();
current_slide_number--;
goToSlide(current_slide_number);
resetInnerNavigation(currentSlideNumber);
currentSlideNumber--;
goToSlide(currentSlideNumber);
break;
case 34: // PgDown
@ -191,29 +238,41 @@
case 74: // j
e.preventDefault();
current_slide_number++;
goToSlide(current_slide_number);
// Only go to next slide if current slide have no inner
// navigation or inner navigation is fully shown
if (
!slideList[currentSlideNumber].hasInnerNavigation ||
-1 === increaseInnerNavigation(currentSlideNumber)
) {
resetInnerNavigation(currentSlideNumber);
currentSlideNumber++;
goToSlide(currentSlideNumber);
}
break;
case 36: // Home
e.preventDefault();
current_slide_number = 0;
goToSlide(current_slide_number);
resetInnerNavigation(currentSlideNumber);
currentSlideNumber = 0;
goToSlide(currentSlideNumber);
break;
case 35: // End
e.preventDefault();
current_slide_number = slideList.length - 1;
goToSlide(current_slide_number);
resetInnerNavigation(currentSlideNumber);
currentSlideNumber = slideList.length - 1;
goToSlide(currentSlideNumber);
break;
case 9: // Tab = +1; Shift + Tab = -1
case 32: // Space = +1; Shift + Space = -1
e.preventDefault();
current_slide_number += e.shiftKey ? -1 : 1;
goToSlide(current_slide_number);
resetInnerNavigation(currentSlideNumber);
currentSlideNumber += e.shiftKey ? -1 : 1;
goToSlide(currentSlideNumber);
break;
default:
@ -225,20 +284,21 @@
document.addEventListener('touchend', dispatchSingleSlideMode, false);
document.addEventListener('touchstart', function (e) {
if(!isSlideListMode()) {
var current_slide_number = getCurrentSlideNumber(),
if (!isListMode()) {
var currentSlideNumber = getCurrentSlideNumber(),
x = e.touches[0].pageX;
if (x > window.innerWidth/2) {
current_slide_number++;
if (x > window.innerWidth / 2) {
currentSlideNumber++;
} else {
current_slide_number--;
currentSlideNumber--;
}
goToSlide(current_slide_number);
goToSlide(currentSlideNumber);
}
}, false);
document.addEventListener('touchmove', function (e) {
if(!isSlideListMode()) {
if (!isListMode()) {
e.preventDefault();
}
}, false);