(function() {
	var pens = {};

	Array.prototype.forEach.call(document.querySelectorAll('.textarea'), function(editor) {
		var event= editor.dataset.editOn;
		if (event == 'load') {
			startEditing(editor);
		} else {
			editor.addEventListener(event, function() {
				if (editor.getAttribute('contenteditable') !== 'true') {
					startEditing(editor);
					// for content editable, we need to refocus to show the caret
					editor.blur(); 
					editor.focus();
				}
			});
		}
	});

	function startEditing(editor) {
		var name = editor.dataset.name;
		pens[name] = new Pen({
			editor: editor,
			class: 'pen',
			textarea: '<textarea name="' + name + '"></textarea>',
			list: ['p', 'h1', 'h2', 'blockquote', 'insertorderedlist', 'insertunorderedlist', 'bold', 'italic', 'underline', 'strikethrough', 'createlink', 'insertimage'],
			title: {
				'p': 'Paragraph',
				'h1': 'Major Heading',
				'h2': 'Minor Heading',
				'blockquote': 'Quotation',
				'insertorderedlist': 'Ordered List',
				'insertunorderedlist': 'Unordered List',
				'bold': 'Bold',
				'italic': 'Italic',
				'underline': 'Underline',
				'strikethrough': 'Strikethrough',
				'createlink': 'Link',
				'insertimage': 'Image'
			}
		});
		return pens[name];
	}

	Array.prototype.forEach.call(document.querySelectorAll('form'), function(form) {
		var shouldAllowAlert = false;
		form.addEventListener('submit', function() {
			if (shouldAllowAlert) {
				return;
			}
			Array.prototype.forEach.call(document.querySelectorAll('.textarea'), function(editor) {
				var name = editor.dataset.name;
				var textarea = document.querySelector('textarea[name="' + name + '"]');
				if (!textarea) {
					textarea = document.createElement('textarea');
					textarea.name = name;
					textarea.style.display = 'none';
					form.appendChild(textarea);
				}
				textarea.value = editor.innerHTML;
				if (pens[name]) {
					pens[name].destroy();
				}
			});
		}, false);
		Array.prototype.forEach.call(form.querySelectorAll('button'), function(button) {
			form.addEventListener('click', function(event) {
				shouldAllowAlert = (event.target.value === 'cancel');
			});
		});
	});

	Array.prototype.forEach.call(document.querySelectorAll('.check-box-field .other input'), function(input) {
		var checkbox = document.getElementById(input.parentElement.parentElement.attributes.for.value);
		input.addEventListener('keyup', function(event) {
			if (event.target.value) {
				checkbox.checked = true;
			}
		});
		input.addEventListener('click', function(event) {
			checkbox.checked = true;
		});
		var setRequired = function() {
			if (checkbox.checked) {
				input.setAttribute('required',  'required');
			} else {
				input.removeAttribute('required');
			}
		};
		Array.prototype.forEach.call(document.querySelectorAll('.check-box-field input'), function(_input) {
			_input.addEventListener('change', function(event) { setRequired(); });
		});
	});

	Array.prototype.forEach.call(document.querySelectorAll('[data-toggles]'), function(checkbox) {
		var toggles = document.getElementById(checkbox.dataset.toggles);
		toggles.classList.add('toggleable');
		var form = checkbox.parentNode;
		while (form && form.nodeName != 'FORM') {
			form = form.parentNode;
		}
		var toggle = function() {
			toggles.classList[checkbox.checked ? 'add' : 'remove']('open');
			if (form) {
				if (checkbox.checked) {
					form.removeAttribute('novalidate');
				} else {
					form.setAttribute('novalidate', 'novalidate');
				}
			}
		};
		toggle();
		checkbox.addEventListener('change', function(event) { toggle(); });
	});
})();