BikeBikeBike/app/assets/javascripts/main.js

(function() {
	window.onerror = function(message, url, lineNumber) {  
		//save error and send to server for example.
		var request = new XMLHttpRequest();
		request.open('POST', '/js_error', true);
		request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');
		request.send(
			'message=' + encodeURI(message) +
			'&url=' + encodeURI(url) +
			'&lineNumber=' + encodeURI(lineNumber) +
			'&location=' + encodeURI(window.location.href)
		);
		return false;
	};
	window.forEach = function(a, f) { Array.prototype.forEach.call(a, f) };
	window.forEachElement = function(s, f, p) { forEach((p || document).querySelectorAll(s), f) };
	
	forEachElement('.number-field,.email-field,.text-field', function(field) {
		var input = field.querySelector('input');
		var positionLabel = function(input) { 
			field.classList[input.value ? 'remove' : 'add']('empty');
		}
		positionLabel(input);
		input.addEventListener('keyup', function(event) {
			positionLabel(event.target);
		});
		input.addEventListener('blur', function(event) {
			positionLabel(event.target);
			field.classList.remove('focused');
		});
		input.addEventListener('focus', function(event) {
			field.classList.add('focused');
		});
	});
	
	var overlay = document.getElementById('content-overlay');
	if (overlay) {
		var body = document.querySelector('body');
		var primaryContent = document.getElementById('primary-content');
		primaryContent.addEventListener('keydown', function(event) {
			if (body.classList.contains('has-overlay')) {
				event.stopPropagation();
				return false;
			}
		});
		document.addEventListener('focus', function(event) {
			if (overlay.querySelector('.dlg.open') && !overlay.querySelector('.dlg.open :focus')) {
				overlay.querySelector('.dlg.open').focus();
			}
		}, true);
		function openDlg(dlg, link) {
			body.setAttribute('style', 'width: ' + body.clientWidth + 'px');
			dlg.querySelector('.message').innerHTML = decodeURI(link.dataset.confirmation);
			dlg.querySelector('.confirm').addEventListener('click', function(event) {
				event.preventDefault();
				if (link.tagName == 'BUTTON') {
					var form = link.parentElement
					while (form && form.tagName != 'FORM') {
						var form = form.parentElement
					}
					if (form) {
						var input = document.createElement('input');
						input.type = 'hidden';
						input.name = 'button';
						input.value = link.value;
						form.appendChild(input);
						form.submit();
					}
				} else {
					window.location.href = link.getAttribute('href');
				}
			});
			primaryContent.setAttribute('aria-hidden', 'true');
			document.getElementById('overlay').onclick =
				dlg.querySelector('.delete').onclick = function() { closeDlg(dlg); };
			body.classList.add('has-overlay');
			dlg.removeAttribute('aria-hidden');
			dlg.setAttribute('role', 'alertdialog');
			dlg.setAttribute('tabindex', '0');
			dlg.focus();
			setTimeout(function() { dlg.classList.add('open'); }, 100);
		}
		function closeDlg(dlg) {
			setTimeout(function() {
					body.classList.remove('has-overlay');
					body.removeAttribute('style');
				}, 250);
			primaryContent.removeAttribute('aria-hidden');
			dlg.setAttribute('aria-hidden', 'true');
			dlg.removeAttribute('tabindex');
			dlg.classList.remove('open');
			dlg.removeAttribute('role');
		}
		var confirmationDlg = document.getElementById('confirmation-dlg');
		forEachElement('[data-confirmation]', function(link) {
			link.addEventListener('click', function(event) {
				event.preventDefault();
				openDlg(confirmationDlg, link);
				return false;
			});
		});
	}

	var errorField = document.querySelector('.input-field.has-error input, .input-field.has-error textarea');
	if (errorField) {
		errorField.focus();
	}
	
	var htmlNode = document.documentElement;
	document.addEventListener('keydown', function(event) {
		if (htmlNode.dataset.input != 'kb' &&
				((!["input", "textarea", "select", "option"].includes(event.target.nodeName.toLowerCase()) &&
				!event.target.attributes.contenteditable) || event.key == "Tab")) {
			htmlNode.setAttribute('data-input', 'kb');
		}
	});
	
	document.addEventListener('mousemove', function(event) {
		if (htmlNode.dataset.input != 'mouse' && (event.movementX || event.movementY)) {
			htmlNode.setAttribute('data-input', 'mouse');
		}
	});
	forEachElement('form.js-xhr', function(form) {
		if (form.addEventListener) {
			form.addEventListener('submit', function(event) {
				event.preventDefault();
				form.classList.add('requesting');
				var data = new FormData(form);
				var request = new XMLHttpRequest();
				request.onreadystatechange = function() {
					if (request.readyState == 4) {
						form.classList.remove('requesting');
						if (request.status == 200) {
							var response = JSON.parse(request.responseText);
							for (var i = 0; i < response.length; i++) {
								form.querySelector(response[i].selector).innerHTML = response[i].html;
							}
						}
					}
				}
				request.open('POST', form.getAttribute('action'), true);
				request.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
				request.send(data);
			}, false);
		}
	});
})();