MediaWiki:Common.js: Difference between revisions

Revision as of 14:23, 1 February 2024

/* Any JavaScript here will be loaded for all users on every page load. */


var coll = document.getElementsByClassName("collapsible");
var i;

for (i = 0; i < coll.length; i++) {
  coll[i].addEventListener("click", function() {
    this.classList.toggle("active");
    var content = this.nextElementSibling;
    $(content).toggle('fast');
  });
}

var imageRotationTimeout; // Declare this variable globally
var loading = true;

function setMainImage(imageHtml) {
    var mainImageDiv = document.querySelector('.mainImage');

    // Apply the blink effect
    mainImageDiv.classList.add('blink');

    // Delay the image update to allow the blink effect to be visible
    setTimeout(function() {
        // Set new image HTML and loading bar
        mainImageDiv.innerHTML = imageHtml + '<div class="loadingBar"></div>';
        resetAndStartLoadingBar();

        // Remove the blink class after the animation ends
        setTimeout(function() {
            mainImageDiv.classList.remove('blink');
        }, 500); // Duration of the blink animation in milliseconds
    }, 250); // Short delay before updating the image

}

function toggleLoadingBarVisibility() {
    loading = false;
    var loadingBar = document.querySelector('.loadingBar');
    if (loadingBar) {
        var isHidden = loadingBar.style.display === 'none';
        loadingBar.style.display = isHidden ? 'block' : 'none';
    }
}

function addClickEventToImages() {
    var images = document.querySelectorAll('.carousel .dpImage');
    images.forEach(function(image, index) {
        image.addEventListener('click', function() {
            // Cancel auto rotation
            clearTimeout(imageRotationTimeout);

            // Hide the loading bar by setting its display to 'none'
            toggleLoadingBarVisibility();

            // Set clicked image as main image
            setMainImage(this.innerHTML);
        });
    });
}

var lastSelectedIndex = -1;
var currentIndex = 0;
var rotationInterval = 10000; // 10 seconds
var imageRotationTimeout;

function getNextIndex(imagesLength) {
    var nextIndex;
    do {
        nextIndex = Math.floor(Math.random() * imagesLength);
    } while (nextIndex === lastSelectedIndex);
    return nextIndex;
}

function startImageRotation() {
    var images = document.querySelectorAll('.carousel .dpImage');
    currentIndex = getNextIndex(images.length);

    setMainImage(images[currentIndex].innerHTML);
    lastSelectedIndex = currentIndex;

    resetAndStartLoadingBar();

    // Schedule the next rotation
    imageRotationTimeout = setTimeout(startImageRotation, rotationInterval);
}

function resetAndStartLoadingBar() {
    if(loading) {
       var loadingBar = document.querySelector('.loadingBar');
       loadingBar.style.transition = 'none'; // Disable transition
       loadingBar.style.width = '0%'; // Reset the width immediately
       setTimeout(function() {
           loadingBar.style.transition = 'width ' + rotationInterval + 'ms linear';
           loadingBar.style.width = '100%'; // Start the transition
       }, 10); // Small delay to allow for width reset
    }
}

// Initialize
window.onload = function() {
    addClickEventToImages();
    startImageRotation(); // Start the initial rotation
};

function init(){
	new SmoothScroll(document,120,12)
}

function SmoothScroll(target, speed, smooth) {
	if (target === document)
		target = (document.scrollingElement 
              || document.documentElement 
              || document.body.parentNode 
              || document.body) // cross browser support for document scrolling
      
	var moving = false
	var pos = target.scrollTop
  var frame = target === document.body 
              && document.documentElement 
              ? document.documentElement 
              : target // safari is the new IE
  
	target.addEventListener('mousewheel', scrolled, { passive: false })
	target.addEventListener('DOMMouseScroll', scrolled, { passive: false })

	function scrolled(e) {
		e.preventDefault(); // disable default scrolling

		var delta = normalizeWheelDelta(e)

		pos += -delta * speed
		pos = Math.max(0, Math.min(pos, target.scrollHeight - frame.clientHeight)) // limit scrolling

		if (!moving) update()
	}

	function normalizeWheelDelta(e){
		if(e.detail){
			if(e.wheelDelta)
				return e.wheelDelta/e.detail/40 * (e.detail>0 ? 1 : -1) // Opera
			else
				return -e.detail/3 // Firefox
		}else
			return e.wheelDelta/120 // IE,Safari,Chrome
	}

	function update() {
		moving = true
    
		var delta = (pos - target.scrollTop) / smooth
    
		target.scrollTop += delta
    
		if (Math.abs(delta) > 0.5)
			requestFrame(update)
		else
			moving = false
	}

	var requestFrame = function() { // requestAnimationFrame cross browser
		return (
			window.requestAnimationFrame ||
			window.webkitRequestAnimationFrame ||
			window.mozRequestAnimationFrame ||
			window.oRequestAnimationFrame ||
			window.msRequestAnimationFrame ||
			function(func) {
				window.setTimeout(func, 1000 / 50);
			}
		);
	}()
}

init();