odk.js

/** Just a bunch of useful scripts **/

(function () {
    var $ = (Document.prototype.$ = Document.prototype.querySelector).bind(document);
    var $$ = (Document.prototype.$$ = Document.prototype.querySelectorAll).bind(document);
    Element.prototype.$ = Element.prototype.querySelector;
    Element.prototype.$$ = Element.prototype.querySelectorAll;
    NodeList.prototype.forEach = Array.prototype.forEach;
    NodeList.prototype.map = Array.prototype.map;
    
    (window.Reveal ? window.Reveal : document).addEventListener('ready', function() {
	/* Transform #?? links into GitHub issues links */
	$$('a[href^="#"]').forEach(function (a) {
	    var match = /#(\d+)/.exec(a.href);
	    if (match !== null) {
		a.href = 'https://github.com/OpenDreamKit/OpenDreamKit/issues/' + match[1];
		a.dataset['issue'] = match[1];
	    }
	});
	/* Fetch description of GitHub issues from GH api */
	var issues = $$('a[data-issue]');
	if (issues.length > 0) {
	    var xhr = new XMLHttpRequest();
	    xhr.open('GET', 'https://api.github.com/repos/OpenDreamKit/OpenDreamKit/issues?per_page=100&labels=deliverable&filter=all&state=all');
	    xhr.responseType = 'json';
	    xhr.onload = function() {
		issues.forEach(function(a) {
		    if (!a.classList.contains('no-ghapi')) {
			var issue = xhr.response.filter(function (i) {
			    return i.number == a.dataset.issue;
			});
			if (issue.length > 0) {
			    a.textContent = issue[0].title;
			} else {
			    a.style.color = 'red';
			    console.log('Unknown issue ' + a.dataset.issue);
			}
		    }
		});
	    };
	    xhr.send();
	}
    });
})();

/* Reveal scrolling for long slides */

function resetSlideScrolling(slide) {
    $(slide).removeClass('scrollable-slide');
}

function handleSlideScrolling(slide) {
    if ($(slide).height() >= 800) {
        $(slide).addClass('scrollable-slide');
    }
}

Reveal.addEventListener('ready', function (event) {
    handleSlideScrolling(event.currentSlide);
});

Reveal.addEventListener('slidechanged', function (event) {
    resetSlideScrolling(event.previousSlide)
    handleSlideScrolling(event.currentSlide);
});