all files / src/dom/ index.js

87.88% Statements 87/99
65.88% Branches 56/85
93.33% Functions 14/15
92.68% Lines 76/82
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'use strict';
 
exports.__esModule = true;
exports.ensureNodeData = ensureNodeData;
exports.setNodeData = setNodeData;
exports.getNodeData = getNodeData;
exports.getNodeType = getNodeType;
exports.getChildren = getChildren;
exports.appendChildren = appendChildren;
exports.removeNode = removeNode;
exports.getAccessor = getAccessor;
exports.setAccessor = setAccessor;
exports.getNodeAttributes = getNodeAttributes;
exports.getRawNodeAttributes = getRawNodeAttributes;
 
var _constants = require('../constants');
 
var _util = require('../util');
 
var _hooks = require('../hooks');
 
// let ShittyMap = typeof WeakMap!=='undefined' ? WeakMap : (( map={}, counter=0 ) => ({
// 	set: (key, value) => {
// 		let id = key.__id || (key.__id = ++counter);
// 		map[id] = value;
// 	},
// 	get: key => key.__id!==undefined && map[key.__id]
// }));
//
// export const NODE_DATA = new ShittyMap();
//
// export function ensureNodeData(node) {
// 	let data = getNodeData(node);
// 	if (!data) NODE_DATA.set(node, data = {});
// 	return data;
// }
//
//
// export function getNodeData(node) {
// 	// try { return node[ATTR_KEY]; } catch (err) {}
// 	// if (node[ATTR_KEY]!==undefined) return node[ATTR_KEY];
// 	return NODE_DATA.get(node);
// }
 
function ensureNodeData(node) {
	return getNodeData(node) || (node[_constants.ATTR_KEY] = {});
}
 
function setNodeData(node, data) {
	node[_constants.ATTR_KEY] = data;
}
 
function getNodeData(node) {
	// try { return node[ATTR_KEY]; } catch (err) {}
	if (node[_constants.ATTR_KEY] !== undefined) return node[_constants.ATTR_KEY];
}
 
function getNodeType(node) {
	if (node instanceof Text) return 3;
	Eif (node instanceof Element) return 1;
	return 0;
	// if (node.normalizedNodeType!==undefined) return node.normalizedNodeType;
	// // try { return node.nodeType|0; } catch (err) {}
	// if (node.nodeType!==undefined) return node.nodeType|0;
}
 
function getChildren(node) {
	// try { return node.childNodes; } catch (err) {}
	Eif (node.childNodes !== undefined) return node.childNodes;
}
 
/** Append multiple children to a Node.
 *	Uses a Document Fragment to batch when appending 2 or more children
 *	@private
 */
 
function appendChildren(parent, children) {
	var len = children.length,
	    many = len > 2,
	    into = many ? document.createDocumentFragment() : parent;
	for (var i = 0; i < len; i++) {
		into.appendChild(children[i]);
	}Iif (many) parent.appendChild(into);
}
 
/** Removes a given DOM Node from its parent. */
 
function removeNode(node) {
	var p = node.parentNode;
	if (p) p.removeChild(node);
}
 
/** Retrieve the value of a rendered attribute
 *	@private
 */
 
function getAccessor(node, name) {
	if (name !== 'type' && name !== 'style' && name !== 'key' && name in node) return node[name];
	var attrs = getNodeData(node);
	if (attrs && _util.hasOwnProperty.call(attrs, name)) return attrs[name];
	if (name === 'class') return node.className || '';
	if (name === 'style') return node.style.cssText || '';
	// if (name!=='key') return node[name];
	// return value;
}
 
/** Set a named attribute on the given Node, with special behavior for some names and event handlers.
 *	If `value` is `null`, the attribute/handler will be removed.
 *	@param {Element} node	An element to mutate
 *	@param {string} name	The name/key to set, such as an event or attribute name
 *	@param {any} value		An attribute value, such as a function to be used as an event handler
 *	@param {any} previousValue	The last value that was set for this name/node pair
 *	@private
 */
 
function setAccessor(node, name, value) {
	if (name === 'class') {
		node.className = value || '';
	} else if (name === 'style') {
		node.style.cssText = value || '';
	} else if (name === 'dangerouslySetInnerHTML') {
		if (value && value.__html) node.innerHTML = value.__html;
	} else if (name === 'key') {} else if (name in node && name !== 'type') {
		node[name] = value;
		if (_util.falsey(value)) node.removeAttribute(name);
	} else {
		setComplexAccessor(node, name, value);
	}
 
	ensureNodeData(node)[name] = value;
}
 
/** For props without explicit behavior, apply to a Node as event handlers or attributes.
 *	@private
 */
function setComplexAccessor(node, name, value) {
	if (name.substring(0, 2) === 'on') {
		var _type = normalizeEventName(name),
		    l = node._listeners || (node._listeners = {}),
		    fn = !l[_type] ? 'add' : !value ? 'remove' : null;
		if (fn) node[fn + 'EventListener'](_type, eventProxy);
		l[_type] = value;
		return;
	}
 
	var type = typeof value;
	if (_util.falsey(value)) {
		node.removeAttribute(name);
	} else if (type !== 'function' && type !== 'object') {
		node.setAttribute(name, value);
	}
}
 
/** Proxy an event to hooked event handlers
 *	@private
 */
function eventProxy(e) {
	var fn = this._listeners[normalizeEventName(e.type)];
	Eif (fn) return fn.call(this, _hooks.optionsHook('event', e) || e);
}
 
/** Convert an Event name/type to lowercase and strip any "on*" prefix.
 *	@function
 *	@private
 */
var normalizeEventName = _util.memoize(function (t) {
	return t.replace(/^on/i, '').toLowerCase();
});
 
/** Get a hashmap of node properties, preferring preact's cached property values over the DOM's
 *	@private
 */
 
function getNodeAttributes(node) {
	return getNodeData(node) || getRawNodeAttributes(node) || _constants.EMPTY;
	// let list = getRawNodeAttributes(node),
	// 	l = node[ATTR_KEY];
	// return l && list ? extend(list, l) : (l || list || EMPTY);
}
 
/** Get a node's attributes as a hashmap, regardless of type.
 *	@private
 */
 
function getRawNodeAttributes(node) {
	var list = node.attributes;
	Iif (!list || !list.getNamedItem) return list;
	return getAttributesAsObject(list);
}
 
/** Convert a DOM `.attributes` NamedNodeMap to a hashmap.
 *	@private
 */
function getAttributesAsObject(list) {
	var attrs = undefined;
	for (var i = list.length; i--;) {
		var item = list[i];
		Eif (!attrs) attrs = {};
		attrs[item.name] = item.value;
	}
	return attrs;
}