Files
safekat/httpdocs/themes/focus2/vendor/horizontal-timeline/js/main.js
2023-04-24 13:00:46 +02:00

258 lines
11 KiB
JavaScript

(function() {
// Horizontal Timeline - by CodyHouse.co
var HorizontalTimeline = function(element) {
this.element = element;
this.datesContainer = this.element.getElementsByClassName('cd-h-timeline__dates')[0];
this.line = this.datesContainer.getElementsByClassName('cd-h-timeline__line')[0]; // grey line in the top timeline section
this.fillingLine = this.datesContainer.getElementsByClassName('cd-h-timeline__filling-line')[0]; // green filling line in the top timeline section
this.date = this.line.getElementsByClassName('cd-h-timeline__date');
this.selectedDate = this.line.getElementsByClassName('cd-h-timeline__date--selected')[0];
this.dateValues = parseDate(this);
this.minLapse = calcMinLapse(this);
this.navigation = this.element.getElementsByClassName('cd-h-timeline__navigation');
this.contentWrapper = this.element.getElementsByClassName('cd-h-timeline__events')[0];
this.content = this.contentWrapper.getElementsByClassName('cd-h-timeline__event');
this.eventsMinDistance = 60; // min distance between two consecutive events (in px)
this.eventsMaxDistance = 200; // max distance between two consecutive events (in px)
this.translate = 0; // this will be used to store the translate value of this.line
this.lineLength = 0; //total length of this.line
// store index of selected and previous selected dates
this.oldDateIndex = Util.getIndexInArray(this.date, this.selectedDate);
this.newDateIndex = this.oldDateIndex;
initTimeline(this);
initEvents(this);
};
function initTimeline(timeline) {
// set dates left position
var left = 0;
for (var i = 0; i < timeline.dateValues.length; i++) {
var j = (i == 0) ? 0 : i - 1;
var distance = daydiff(timeline.dateValues[j], timeline.dateValues[i]),
distanceNorm = (Math.round(distance/timeline.minLapse) + 2)*timeline.eventsMinDistance;
if(distanceNorm < timeline.eventsMinDistance) {
distanceNorm = timeline.eventsMinDistance;
} else if(distanceNorm > timeline.eventsMaxDistance) {
distanceNorm = timeline.eventsMaxDistance;
}
left = left + distanceNorm;
timeline.date[i].setAttribute('style', 'left:' + left+'px');
}
// set line/filling line dimensions
timeline.line.style.width = (left + timeline.eventsMinDistance)+'px';
timeline.lineLength = left + timeline.eventsMinDistance;
// reveal timeline
Util.addClass(timeline.element, 'cd-h-timeline--loaded');
selectNewDate(timeline, timeline.selectedDate);
resetTimelinePosition(timeline, 'next');
};
function initEvents(timeline) {
var self = timeline;
// click on arrow navigation
self.navigation[0].addEventListener('click', function(event){
event.preventDefault();
translateTimeline(self, 'prev');
});
self.navigation[1].addEventListener('click', function(event){
event.preventDefault();
translateTimeline(self, 'next');
});
//swipe on timeline
new SwipeContent(self.datesContainer);
self.datesContainer.addEventListener('swipeLeft', function(event){
translateTimeline(self, 'next');
});
self.datesContainer.addEventListener('swipeRight', function(event){
translateTimeline(self, 'prev');
});
//select a new event
for(var i = 0; i < self.date.length; i++) {
(function(i){
self.date[i].addEventListener('click', function(event){
event.preventDefault();
selectNewDate(self, event.target);
});
self.content[i].addEventListener('animationend', function(event){
if( i == self.newDateIndex && self.newDateIndex != self.oldDateIndex) resetAnimation(self);
});
})(i);
}
};
function updateFilling(timeline) { // update fillingLine scale value
var dateStyle = window.getComputedStyle(timeline.selectedDate, null),
left = dateStyle.getPropertyValue("left"),
width = dateStyle.getPropertyValue("width");
left = Number(left.replace('px', '')) + Number(width.replace('px', ''))/2;
timeline.fillingLine.style.transform = 'scaleX('+(left/timeline.lineLength)+')';
};
function translateTimeline(timeline, direction) { // translate timeline (and date elements)
var containerWidth = timeline.datesContainer.offsetWidth;
if(direction) {
timeline.translate = (direction == 'next') ? timeline.translate - containerWidth + timeline.eventsMinDistance : timeline.translate + containerWidth - timeline.eventsMinDistance;
}
if( 0 - timeline.translate > timeline.lineLength - containerWidth ) timeline.translate = containerWidth - timeline.lineLength;
if( timeline.translate > 0 ) timeline.translate = 0;
timeline.line.style.transform = 'translateX('+timeline.translate+'px)';
// update the navigation items status (toggle inactive class)
(timeline.translate == 0 ) ? Util.addClass(timeline.navigation[0], 'cd-h-timeline__navigation--inactive') : Util.removeClass(timeline.navigation[0], 'cd-h-timeline__navigation--inactive');
(timeline.translate == containerWidth - timeline.lineLength ) ? Util.addClass(timeline.navigation[1], 'cd-h-timeline__navigation--inactive') : Util.removeClass(timeline.navigation[1], 'cd-h-timeline__navigation--inactive');
};
function selectNewDate(timeline, target) { // ned date has been selected -> update timeline
timeline.newDateIndex = Util.getIndexInArray(timeline.date, target);
timeline.oldDateIndex = Util.getIndexInArray(timeline.date, timeline.selectedDate);
Util.removeClass(timeline.selectedDate, 'cd-h-timeline__date--selected');
Util.addClass(timeline.date[timeline.newDateIndex], 'cd-h-timeline__date--selected');
timeline.selectedDate = timeline.date[timeline.newDateIndex];
updateOlderEvents(timeline);
updateVisibleContent(timeline);
updateFilling(timeline);
};
function updateOlderEvents(timeline) { // update older events style
for(var i = 0; i < timeline.date.length; i++) {
(i < timeline.newDateIndex) ? Util.addClass(timeline.date[i], 'cd-h-timeline__date--older-event') : Util.removeClass(timeline.date[i], 'cd-h-timeline__date--older-event');
}
};
function updateVisibleContent(timeline) { // show content of new selected date
if (timeline.newDateIndex > timeline.oldDateIndex) {
var classEntering = 'cd-h-timeline__event--selected cd-h-timeline__event--enter-right',
classLeaving = 'cd-h-timeline__event--leave-left';
} else if(timeline.newDateIndex < timeline.oldDateIndex) {
var classEntering = 'cd-h-timeline__event--selected cd-h-timeline__event--enter-left',
classLeaving = 'cd-h-timeline__event--leave-right';
} else {
var classEntering = 'cd-h-timeline__event--selected',
classLeaving = '';
}
Util.addClass(timeline.content[timeline.newDateIndex], classEntering);
if (timeline.newDateIndex != timeline.oldDateIndex) {
Util.removeClass(timeline.content[timeline.oldDateIndex], 'cd-h-timeline__event--selected');
Util.addClass(timeline.content[timeline.oldDateIndex], classLeaving);
timeline.contentWrapper.style.height = timeline.content[timeline.newDateIndex].offsetHeight + 'px';
}
};
function resetAnimation(timeline) { // reset content classes when entering animation is over
timeline.contentWrapper.style.height = null;
Util.removeClass(timeline.content[timeline.newDateIndex], 'cd-h-timeline__event--enter-right cd-h-timeline__event--enter-left');
Util.removeClass(timeline.content[timeline.oldDateIndex], 'cd-h-timeline__event--leave-right cd-h-timeline__event--leave-left');
};
function keyNavigateTimeline(timeline, direction) { // navigate the timeline using the keyboard
var newIndex = (direction == 'next') ? timeline.newDateIndex + 1 : timeline.newDateIndex - 1;
if(newIndex < 0 || newIndex >= timeline.date.length) return;
selectNewDate(timeline, timeline.date[newIndex]);
resetTimelinePosition(timeline, direction);
};
function resetTimelinePosition(timeline, direction) { //translate timeline according to new selected event position
var eventStyle = window.getComputedStyle(timeline.selectedDate, null),
eventLeft = Number(eventStyle.getPropertyValue('left').replace('px', '')),
timelineWidth = timeline.datesContainer.offsetWidth;
if( (direction == 'next' && eventLeft >= timelineWidth - timeline.translate) || (direction == 'prev' && eventLeft <= - timeline.translate) ) {
timeline.translate = timelineWidth/2 - eventLeft;
translateTimeline(timeline, false);
}
};
function parseDate(timeline) { // get timestamp value for each date
var dateArrays = [];
for(var i = 0; i < timeline.date.length; i++) {
var singleDate = timeline.date[i].getAttribute('data-date'),
dateComp = singleDate.split('T');
if( dateComp.length > 1 ) { //both DD/MM/YEAR and time are provided
var dayComp = dateComp[0].split('/'),
timeComp = dateComp[1].split(':');
} else if( dateComp[0].indexOf(':') >=0 ) { //only time is provide
var dayComp = ["2000", "0", "0"],
timeComp = dateComp[0].split(':');
} else { //only DD/MM/YEAR
var dayComp = dateComp[0].split('/'),
timeComp = ["0", "0"];
}
var newDate = new Date(dayComp[2], dayComp[1]-1, dayComp[0], timeComp[0], timeComp[1]);
dateArrays.push(newDate);
}
return dateArrays;
};
function calcMinLapse(timeline) { // determine the minimum distance among events
var dateDistances = [];
for(var i = 1; i < timeline.dateValues.length; i++) {
var distance = daydiff(timeline.dateValues[i-1], timeline.dateValues[i]);
if(distance > 0) dateDistances.push(distance);
}
return (dateDistances.length > 0 ) ? Math.min.apply(null, dateDistances) : 86400000;
};
function daydiff(first, second) { // time distance between events
return Math.round((second-first));
};
window.HorizontalTimeline = HorizontalTimeline;
var horizontalTimeline = document.getElementsByClassName('js-cd-h-timeline'),
horizontalTimelineTimelineArray = [];
if(horizontalTimeline.length > 0) {
for(var i = 0; i < horizontalTimeline.length; i++) {
horizontalTimelineTimelineArray.push(new HorizontalTimeline(horizontalTimeline[i]));
}
// navigate the timeline when inside the viewport using the keyboard
document.addEventListener('keydown', function(event){
if( (event.keyCode && event.keyCode == 39) || ( event.key && event.key.toLowerCase() == 'arrowright') ) {
updateHorizontalTimeline('next'); // move to next event
} else if((event.keyCode && event.keyCode == 37) || ( event.key && event.key.toLowerCase() == 'arrowleft')) {
updateHorizontalTimeline('prev'); // move to prev event
}
});
};
function updateHorizontalTimeline(direction) {
for(var i = 0; i < horizontalTimelineTimelineArray.length; i++) {
if(elementInViewport(horizontalTimeline[i])) keyNavigateTimeline(horizontalTimelineTimelineArray[i], direction);
}
};
/*
How to tell if a DOM element is visible in the current viewport?
http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
*/
function elementInViewport(el) {
var top = el.offsetTop;
var left = el.offsetLeft;
var width = el.offsetWidth;
var height = el.offsetHeight;
while(el.offsetParent) {
el = el.offsetParent;
top += el.offsetTop;
left += el.offsetLeft;
}
return (
top < (window.pageYOffset + window.innerHeight) &&
left < (window.pageXOffset + window.innerWidth) &&
(top + height) > window.pageYOffset &&
(left + width) > window.pageXOffset
);
}
}());