268 lines
12 KiB
JavaScript
268 lines
12 KiB
JavaScript
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jQuery(document).ready(function($){
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var timelines = $('.cd-horizontal-timeline'),
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eventsMinDistance = 60;
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(timelines.length > 0) && initTimeline(timelines);
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function initTimeline(timelines) {
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timelines.each(function(){
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var timeline = $(this),
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timelineComponents = {};
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//cache timeline components
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timelineComponents['timelineWrapper'] = timeline.find('.events-wrapper');
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timelineComponents['eventsWrapper'] = timelineComponents['timelineWrapper'].children('.events');
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timelineComponents['fillingLine'] = timelineComponents['eventsWrapper'].children('.filling-line');
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timelineComponents['timelineEvents'] = timelineComponents['eventsWrapper'].find('a');
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timelineComponents['timelineDates'] = parseDate(timelineComponents['timelineEvents']);
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timelineComponents['eventsMinLapse'] = minLapse(timelineComponents['timelineDates']);
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timelineComponents['timelineNavigation'] = timeline.find('.cd-timeline-navigation');
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timelineComponents['eventsContent'] = timeline.children('.events-content');
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//assign a left postion to the single events along the timeline
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setDatePosition(timelineComponents, eventsMinDistance);
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//assign a width to the timeline
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var timelineTotWidth = setTimelineWidth(timelineComponents, eventsMinDistance);
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//the timeline has been initialize - show it
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timeline.addClass('loaded');
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//detect click on the next arrow
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timelineComponents['timelineNavigation'].on('click', '.next', function(event){
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event.preventDefault();
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updateSlide(timelineComponents, timelineTotWidth, 'next');
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});
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//detect click on the prev arrow
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timelineComponents['timelineNavigation'].on('click', '.prev', function(event){
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event.preventDefault();
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updateSlide(timelineComponents, timelineTotWidth, 'prev');
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});
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//detect click on the a single event - show new event content
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timelineComponents['eventsWrapper'].on('click', 'a', function(event){
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event.preventDefault();
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timelineComponents['timelineEvents'].removeClass('selected');
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$(this).addClass('selected');
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updateOlderEvents($(this));
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updateFilling($(this), timelineComponents['fillingLine'], timelineTotWidth);
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updateVisibleContent($(this), timelineComponents['eventsContent']);
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});
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//on swipe, show next/prev event content
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timelineComponents['eventsContent'].on('swipeleft', function(){
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var mq = checkMQ();
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( mq == 'mobile' ) && showNewContent(timelineComponents, timelineTotWidth, 'next');
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});
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timelineComponents['eventsContent'].on('swiperight', function(){
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var mq = checkMQ();
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( mq == 'mobile' ) && showNewContent(timelineComponents, timelineTotWidth, 'prev');
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});
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//keyboard navigation
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$(document).keyup(function(event){
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if(event.which=='37' && elementInViewport(timeline.get(0)) ) {
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showNewContent(timelineComponents, timelineTotWidth, 'prev');
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} else if( event.which=='39' && elementInViewport(timeline.get(0))) {
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showNewContent(timelineComponents, timelineTotWidth, 'next');
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}
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});
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});
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}
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function updateSlide(timelineComponents, timelineTotWidth, string) {
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//retrieve translateX value of timelineComponents['eventsWrapper']
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var translateValue = getTranslateValue(timelineComponents['eventsWrapper']),
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wrapperWidth = Number(timelineComponents['timelineWrapper'].css('width').replace('px', ''));
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//translate the timeline to the left('next')/right('prev')
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(string == 'next')
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? translateTimeline(timelineComponents, translateValue - wrapperWidth + eventsMinDistance, wrapperWidth - timelineTotWidth)
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: translateTimeline(timelineComponents, translateValue + wrapperWidth - eventsMinDistance);
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}
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function showNewContent(timelineComponents, timelineTotWidth, string) {
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//go from one event to the next/previous one
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var visibleContent = timelineComponents['eventsContent'].find('.selected'),
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newContent = ( string == 'next' ) ? visibleContent.next() : visibleContent.prev();
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if ( newContent.length > 0 ) { //if there's a next/prev event - show it
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var selectedDate = timelineComponents['eventsWrapper'].find('.selected'),
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newEvent = ( string == 'next' ) ? selectedDate.parent('li').next('li').children('a') : selectedDate.parent('li').prev('li').children('a');
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updateFilling(newEvent, timelineComponents['fillingLine'], timelineTotWidth);
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updateVisibleContent(newEvent, timelineComponents['eventsContent']);
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newEvent.addClass('selected');
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selectedDate.removeClass('selected');
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updateOlderEvents(newEvent);
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updateTimelinePosition(string, newEvent, timelineComponents);
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}
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}
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function updateTimelinePosition(string, event, timelineComponents) {
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//translate timeline to the left/right according to the position of the selected event
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var eventStyle = window.getComputedStyle(event.get(0), null),
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eventLeft = Number(eventStyle.getPropertyValue("left").replace('px', '')),
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timelineWidth = Number(timelineComponents['timelineWrapper'].css('width').replace('px', '')),
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timelineTotWidth = Number(timelineComponents['eventsWrapper'].css('width').replace('px', ''));
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var timelineTranslate = getTranslateValue(timelineComponents['eventsWrapper']);
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if( (string == 'next' && eventLeft > timelineWidth - timelineTranslate) || (string == 'prev' && eventLeft < - timelineTranslate) ) {
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translateTimeline(timelineComponents, - eventLeft + timelineWidth/2, timelineWidth - timelineTotWidth);
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}
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}
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function translateTimeline(timelineComponents, value, totWidth) {
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var eventsWrapper = timelineComponents['eventsWrapper'].get(0);
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value = (value > 0) ? 0 : value; //only negative translate value
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value = ( !(typeof totWidth === 'undefined') && value < totWidth ) ? totWidth : value; //do not translate more than timeline width
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setTransformValue(eventsWrapper, 'translateX', value+'px');
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//update navigation arrows visibility
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(value == 0 ) ? timelineComponents['timelineNavigation'].find('.prev').addClass('inactive') : timelineComponents['timelineNavigation'].find('.prev').removeClass('inactive');
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(value == totWidth ) ? timelineComponents['timelineNavigation'].find('.next').addClass('inactive') : timelineComponents['timelineNavigation'].find('.next').removeClass('inactive');
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}
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function updateFilling(selectedEvent, filling, totWidth) {
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//change .filling-line length according to the selected event
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var eventStyle = window.getComputedStyle(selectedEvent.get(0), null),
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eventLeft = eventStyle.getPropertyValue("left"),
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eventWidth = eventStyle.getPropertyValue("width");
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eventLeft = Number(eventLeft.replace('px', '')) + Number(eventWidth.replace('px', ''))/2;
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var scaleValue = eventLeft/totWidth;
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setTransformValue(filling.get(0), 'scaleX', scaleValue);
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}
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function setDatePosition(timelineComponents, min) {
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for (i = 0; i < timelineComponents['timelineDates'].length; i++) {
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var distance = daydiff(timelineComponents['timelineDates'][0], timelineComponents['timelineDates'][i]),
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distanceNorm = Math.round(distance/timelineComponents['eventsMinLapse']) + 2;
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timelineComponents['timelineEvents'].eq(i).css('left', distanceNorm*min+'px');
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}
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}
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function setTimelineWidth(timelineComponents, width) {
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var timeSpan = daydiff(timelineComponents['timelineDates'][0], timelineComponents['timelineDates'][timelineComponents['timelineDates'].length-1]),
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timeSpanNorm = timeSpan/timelineComponents['eventsMinLapse'],
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timeSpanNorm = Math.round(timeSpanNorm) + 4,
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totalWidth = timeSpanNorm*width;
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timelineComponents['eventsWrapper'].css('width', totalWidth+'px');
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updateFilling(timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents['fillingLine'], totalWidth);
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updateTimelinePosition('next', timelineComponents['eventsWrapper'].find('a.selected'), timelineComponents);
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return totalWidth;
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}
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function updateVisibleContent(event, eventsContent) {
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var eventDate = event.data('date'),
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visibleContent = eventsContent.find('.selected'),
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selectedContent = eventsContent.find('[data-date="'+ eventDate +'"]'),
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selectedContentHeight = selectedContent.height();
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if (selectedContent.index() > visibleContent.index()) {
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var classEnetering = 'selected enter-right',
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classLeaving = 'leave-left';
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} else {
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var classEnetering = 'selected enter-left',
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classLeaving = 'leave-right';
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}
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selectedContent.attr('class', classEnetering);
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visibleContent.attr('class', classLeaving).one('webkitAnimationEnd oanimationend msAnimationEnd animationend', function(){
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visibleContent.removeClass('leave-right leave-left');
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selectedContent.removeClass('enter-left enter-right');
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});
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eventsContent.css('height', selectedContentHeight+'px');
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}
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function updateOlderEvents(event) {
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event.parent('li').prevAll('li').children('a').addClass('older-event').end().end().nextAll('li').children('a').removeClass('older-event');
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}
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function getTranslateValue(timeline) {
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var timelineStyle = window.getComputedStyle(timeline.get(0), null),
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timelineTranslate = timelineStyle.getPropertyValue("-webkit-transform") ||
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timelineStyle.getPropertyValue("-moz-transform") ||
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timelineStyle.getPropertyValue("-ms-transform") ||
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timelineStyle.getPropertyValue("-o-transform") ||
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timelineStyle.getPropertyValue("transform");
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if( timelineTranslate.indexOf('(') >=0 ) {
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var timelineTranslate = timelineTranslate.split('(')[1];
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timelineTranslate = timelineTranslate.split(')')[0];
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timelineTranslate = timelineTranslate.split(',');
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var translateValue = timelineTranslate[4];
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} else {
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var translateValue = 0;
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}
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return Number(translateValue);
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}
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function setTransformValue(element, property, value) {
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element.style["-webkit-transform"] = property+"("+value+")";
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element.style["-moz-transform"] = property+"("+value+")";
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element.style["-ms-transform"] = property+"("+value+")";
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element.style["-o-transform"] = property+"("+value+")";
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element.style["transform"] = property+"("+value+")";
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}
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//based on http://stackoverflow.com/questions/542938/how-do-i-get-the-number-of-days-between-two-dates-in-javascript
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function parseDate(events) {
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var dateArrays = [];
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events.each(function(){
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var singleDate = $(this),
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dateComp = singleDate.data('date').split('T');
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if( dateComp.length > 1 ) { //both DD/MM/YEAR and time are provided
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var dayComp = dateComp[0].split('/'),
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timeComp = dateComp[1].split(':');
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} else if( dateComp[0].indexOf(':') >=0 ) { //only time is provide
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var dayComp = ["2000", "0", "0"],
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timeComp = dateComp[0].split(':');
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} else { //only DD/MM/YEAR
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var dayComp = dateComp[0].split('/'),
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timeComp = ["0", "0"];
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}
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var newDate = new Date(dayComp[2], dayComp[1]-1, dayComp[0], timeComp[0], timeComp[1]);
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dateArrays.push(newDate);
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});
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return dateArrays;
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}
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function daydiff(first, second) {
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return Math.round((second-first));
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}
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function minLapse(dates) {
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//determine the minimum distance among events
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var dateDistances = [];
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for (i = 1; i < dates.length; i++) {
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var distance = daydiff(dates[i-1], dates[i]);
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dateDistances.push(distance);
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}
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return Math.min.apply(null, dateDistances);
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}
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/*
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How to tell if a DOM element is visible in the current viewport?
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http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
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*/
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function elementInViewport(el) {
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var top = el.offsetTop;
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var left = el.offsetLeft;
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var width = el.offsetWidth;
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var height = el.offsetHeight;
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while(el.offsetParent) {
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el = el.offsetParent;
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top += el.offsetTop;
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left += el.offsetLeft;
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}
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return (
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top < (window.pageYOffset + window.innerHeight) &&
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left < (window.pageXOffset + window.innerWidth) &&
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(top + height) > window.pageYOffset &&
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(left + width) > window.pageXOffset
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);
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}
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function checkMQ() {
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//check if mobile or desktop device
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return window.getComputedStyle(document.querySelector('.cd-horizontal-timeline'), '::before').getPropertyValue('content').replace(/'/g, "").replace(/"/g, "");
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}
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});
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