fix eslint issues
This commit is contained in:
JFH
338
archive/screencasts/svgopen2010/script.js
Normal file
338
archive/screencasts/svgopen2010/script.js
Normal file
@@ -0,0 +1,338 @@
|
||||
(() => {
|
||||
const doc = document;
|
||||
const disableBuilds = true;
|
||||
|
||||
let ctr = 0;
|
||||
|
||||
const byId = function (id) {
|
||||
if (typeof id === 'string') { return doc.getElementById(id); }
|
||||
return id;
|
||||
};
|
||||
|
||||
const query = function (qry, root) {
|
||||
if (!qry) { return []; }
|
||||
if (typeof qry !== 'string') { return [...qry]; }
|
||||
if (typeof root === 'string') {
|
||||
root = byId(root);
|
||||
if (!root) { return []; }
|
||||
}
|
||||
|
||||
root = root || document;
|
||||
const rootIsDoc = (root.nodeType === 9);
|
||||
const dcmnt = rootIsDoc ? root : (root.ownerDocument || document);
|
||||
|
||||
// rewrite the query to be ID rooted
|
||||
if (!rootIsDoc || ('>~+'.includes(qry[0]))) {
|
||||
root.id = root.id || ('qUnique' + (ctr++));
|
||||
qry = '#' + root.id + ' ' + qry;
|
||||
}
|
||||
// don't choke on something like ".yada.yada >"
|
||||
if ('>~+'.includes(qry.slice(-1))) { qry += ' *'; }
|
||||
|
||||
return [...dcmnt.querySelectorAll(qry)];
|
||||
};
|
||||
|
||||
const ua = navigator.userAgent;
|
||||
const isFF = Number.parseFloat(ua.split('Firefox/')[1]) || undefined;
|
||||
const isWK = Number.parseFloat(ua.split('WebKit/')[1]) || undefined;
|
||||
const isOpera = Number.parseFloat(ua.split('Opera/')[1]) || undefined;
|
||||
|
||||
const canTransition = (function () {
|
||||
const ver = Number.parseFloat(ua.split('Version/')[1]) || undefined;
|
||||
// test to determine if this browser can handle CSS transitions.
|
||||
const cachedCanTransition =
|
||||
(isWK || (isFF && isFF > 3.6) || (isOpera && ver >= 10.5));
|
||||
return function () { return cachedCanTransition; };
|
||||
})();
|
||||
|
||||
//
|
||||
// Slide class
|
||||
//
|
||||
const Slide = function (node, idx) {
|
||||
this._node = node;
|
||||
if (idx >= 0) {
|
||||
this._count = idx + 1;
|
||||
}
|
||||
if (this._node) {
|
||||
this._node.classList.add('slide', 'distant-slide');
|
||||
}
|
||||
this._makeCounter();
|
||||
this._makeBuildList();
|
||||
};
|
||||
|
||||
Slide.prototype = {
|
||||
_node: null,
|
||||
_count: 0,
|
||||
_buildList: [],
|
||||
_visited: false,
|
||||
_currentState: '',
|
||||
_states: [
|
||||
'distant-slide', 'far-past',
|
||||
'past', 'current', 'future',
|
||||
'far-future', 'distant-slide'
|
||||
],
|
||||
setState (state) {
|
||||
if (typeof state !== 'string') {
|
||||
state = this._states[state];
|
||||
}
|
||||
if (state === 'current' && !this._visited) {
|
||||
this._visited = true;
|
||||
this._makeBuildList();
|
||||
}
|
||||
this._node.classList.remove(...this._states);
|
||||
this._node.classList.add(state);
|
||||
this._currentState = state;
|
||||
|
||||
// delay first auto run. Really wish this were in CSS.
|
||||
/*
|
||||
this._runAutos();
|
||||
*/
|
||||
const that = this;
|
||||
setTimeout(function () { that._runAutos(); }, 400);
|
||||
},
|
||||
_makeCounter () {
|
||||
if (!this._count || !this._node) { return; }
|
||||
const c = doc.createElement('span');
|
||||
c.textContent = this._count;
|
||||
c.className = 'counter';
|
||||
this._node.append(c);
|
||||
},
|
||||
_makeBuildList () {
|
||||
this._buildList = [];
|
||||
if (disableBuilds) { return; }
|
||||
if (this._node) {
|
||||
this._buildList = query('[data-build] > *', this._node);
|
||||
}
|
||||
this._buildList.forEach(function (el) {
|
||||
el.classList.add('to-build');
|
||||
});
|
||||
},
|
||||
_runAutos () {
|
||||
if (this._currentState !== 'current') {
|
||||
return;
|
||||
}
|
||||
// find the next auto, slice it out of the list, and run it
|
||||
let idx = -1;
|
||||
this._buildList.some(function (n, i) {
|
||||
if (n.hasAttribute('data-auto')) {
|
||||
idx = i;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
});
|
||||
if (idx >= 0) {
|
||||
const elem = this._buildList.splice(idx, 1)[0];
|
||||
const transitionEnd = isWK ? 'webkitTransitionEnd' : (isFF ? 'mozTransitionEnd' : 'oTransitionEnd');
|
||||
const that = this;
|
||||
if (canTransition()) {
|
||||
const l = function (evt) {
|
||||
elem.parentNode.removeEventListener(transitionEnd, l);
|
||||
that._runAutos();
|
||||
};
|
||||
elem.parentNode.addEventListener(transitionEnd, l);
|
||||
elem.classList.remove('to-build');
|
||||
} else {
|
||||
setTimeout(function () {
|
||||
elem.classList.remove('to-build');
|
||||
that._runAutos();
|
||||
}, 400);
|
||||
}
|
||||
}
|
||||
},
|
||||
buildNext () {
|
||||
if (!this._buildList.length) {
|
||||
return false;
|
||||
}
|
||||
this._buildList.shift().classList.remove('to-build');
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
//
|
||||
// SlideShow class
|
||||
//
|
||||
const SlideShow = function (slides) {
|
||||
this._slides = (slides || []).map(function (el, idx) {
|
||||
return new Slide(el, idx);
|
||||
});
|
||||
|
||||
const h = window.location.hash;
|
||||
try {
|
||||
this.current = Number.parseInt(h.split('#slide')[1]);
|
||||
} catch (e) { /* squelch */ }
|
||||
this.current = Number.isNaN(this.current) ? 1 : this.current;
|
||||
const that = this;
|
||||
doc.addEventListener('keydown',
|
||||
function (e) { that.handleKeys(e); });
|
||||
doc.addEventListener('mousewheel',
|
||||
function (e) { that.handleWheel(e); });
|
||||
doc.addEventListener('DOMMouseScroll',
|
||||
function (e) { that.handleWheel(e); });
|
||||
doc.addEventListener('touchstart',
|
||||
function (e) { that.handleTouchStart(e); });
|
||||
doc.addEventListener('touchend',
|
||||
function (e) { that.handleTouchEnd(e); });
|
||||
window.addEventListener('popstate',
|
||||
function (e) { that.go(e.state); });
|
||||
this._update();
|
||||
};
|
||||
|
||||
SlideShow.prototype = {
|
||||
_slides: [],
|
||||
_update (dontPush) {
|
||||
document.querySelector('#presentation-counter').textContent = this.current;
|
||||
if (history.pushState) {
|
||||
if (!dontPush) {
|
||||
history.pushState(this.current, 'Slide ' + this.current, '#slide' + this.current);
|
||||
}
|
||||
} else {
|
||||
window.location.hash = 'slide' + this.current;
|
||||
}
|
||||
for (let x = this.current - 1; x < this.current + 7; x++) {
|
||||
if (this._slides[x - 4]) {
|
||||
this._slides[x - 4].setState(Math.max(0, x - this.current));
|
||||
}
|
||||
}
|
||||
},
|
||||
|
||||
current: 0,
|
||||
next () {
|
||||
if (!this._slides[this.current - 1].buildNext()) {
|
||||
this.current = Math.min(this.current + 1, this._slides.length);
|
||||
this._update();
|
||||
}
|
||||
},
|
||||
prev () {
|
||||
this.current = Math.max(this.current - 1, 1);
|
||||
this._update();
|
||||
},
|
||||
go (num) {
|
||||
if (history.pushState && this.current !== num) {
|
||||
history.replaceState(this.current, 'Slide ' + this.current, '#slide' + this.current);
|
||||
}
|
||||
this.current = num;
|
||||
this._update(true);
|
||||
},
|
||||
|
||||
_notesOn: false,
|
||||
showNotes () {
|
||||
const notesOn = this._notesOn = !this._notesOn;
|
||||
query('.notes').forEach(function (el) {
|
||||
el.style.display = (notesOn) ? 'block' : 'none';
|
||||
});
|
||||
},
|
||||
switch3D () {
|
||||
document.body.classList.toggle('three-d');
|
||||
},
|
||||
handleWheel (e) {
|
||||
let delta = 0;
|
||||
if (e.wheelDelta) {
|
||||
delta = e.wheelDelta / 120;
|
||||
if (isOpera) {
|
||||
delta = -delta;
|
||||
}
|
||||
} else if (e.detail) {
|
||||
delta = -e.detail / 3;
|
||||
}
|
||||
|
||||
if (delta > 0) {
|
||||
this.prev();
|
||||
return;
|
||||
}
|
||||
if (delta < 0) {
|
||||
this.next();
|
||||
}
|
||||
},
|
||||
handleKeys (e) {
|
||||
if ((/^(?:input|textarea)$/i).test(e.target.nodeName)) return;
|
||||
|
||||
switch (e.keyCode) {
|
||||
case 37: // left arrow
|
||||
this.prev(); break;
|
||||
case 39: // right arrow
|
||||
case 32: // space
|
||||
this.next(); break;
|
||||
case 50: // 2
|
||||
this.showNotes(); break;
|
||||
case 51: // 3
|
||||
this.switch3D(); break;
|
||||
}
|
||||
},
|
||||
_touchStartX: 0,
|
||||
handleTouchStart (e) {
|
||||
this._touchStartX = e.touches[0].pageX;
|
||||
},
|
||||
handleTouchEnd (e) {
|
||||
const delta = this._touchStartX - e.changedTouches[0].pageX;
|
||||
const SWIPE_SIZE = 150;
|
||||
if (delta > SWIPE_SIZE) {
|
||||
this.next();
|
||||
} else if (delta < -SWIPE_SIZE) {
|
||||
this.prev();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// Initialize
|
||||
/* const slideshow = */ new SlideShow(query('.slide')); // eslint-disable-line no-new
|
||||
|
||||
document.querySelector('#toggle-counter').addEventListener('click', toggleCounter);
|
||||
document.querySelector('#toggle-size').addEventListener('click', toggleSize);
|
||||
document.querySelector('#toggle-transitions').addEventListener('click', toggleTransitions);
|
||||
document.querySelector('#toggle-gradients').addEventListener('click', toggleGradients);
|
||||
|
||||
const counters = document.querySelectorAll('.counter');
|
||||
const slides = document.querySelectorAll('.slide');
|
||||
|
||||
/**
|
||||
* Show or hide the counters.
|
||||
* @returns {void}
|
||||
*/
|
||||
function toggleCounter () {
|
||||
[...counters].forEach(function (el) {
|
||||
el.style.display = (el.offsetHeight) ? 'none' : 'block';
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Add or remove `reduced` (size) class.
|
||||
* @returns {void}
|
||||
*/
|
||||
function toggleSize () {
|
||||
[...slides].forEach(function (el) {
|
||||
if (!(/reduced/).test(el.className)) {
|
||||
el.classList.add('reduced');
|
||||
} else {
|
||||
el.classList.remove('reduced');
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Add or remove `no-transitions` class.
|
||||
* @returns {void}
|
||||
*/
|
||||
function toggleTransitions () {
|
||||
[...slides].forEach(function (el) {
|
||||
if (!(/no-transitions/).test(el.className)) {
|
||||
el.classList.add('no-transitions');
|
||||
} else {
|
||||
el.classList.remove('no-transitions');
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Add or remove `no-gradients` class.
|
||||
* @returns {void}
|
||||
*/
|
||||
function toggleGradients () {
|
||||
[...slides].forEach(function (el) {
|
||||
if (!(/no-gradients/).test(el.className)) {
|
||||
el.classList.add('no-gradients');
|
||||
} else {
|
||||
el.classList.remove('no-gradients');
|
||||
}
|
||||
});
|
||||
}
|
||||
})();
|
||||
Reference in New Issue
Block a user