1 files changed, 100 insertions, 0 deletions
diff --git a/thirdparty/preact/src/dom/index.js b/thirdparty/preact/src/dom/index.js
new file mode 100644
index 000000000..248a3cdc5
--- /dev/null
+++ b/thirdparty/preact/src/dom/index.js
@@ -0,0 +1,100 @@
+import { ATTR_KEY, NON_DIMENSION_PROPS, NON_BUBBLING_EVENTS } from '../constants';
+import options from '../options';
+import { toLowerCase, isString, isFunction, hashToClassName } from '../util';
+
+
+
+
+/** Removes a given DOM Node from its parent. */
+export function removeNode(node) {
+	let p = node.parentNode;
+	if (p) p.removeChild(node);
+}
+
+
+/** 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
+ */
+export function setAccessor(node, name, value, old, isSvg) {
+	node[ATTR_KEY][name] = value;
+
+	if (name==='className') name = 'class';
+
+	if (name==='class' && value && typeof value==='object') {
+		value = hashToClassName(value);
+	}
+
+	if (name==='key' || name==='children' || name==='innerHTML') {
+		// skip these
+	}
+	else if (name==='class' && !isSvg) {
+		node.className = value || '';
+	}
+	else if (name==='style') {
+		if (!value || isString(value) || isString(old)) {
+			node.style.cssText = value || '';
+		}
+		if (value && typeof value==='object') {
+			if (!isString(old)) {
+				for (let i in old) if (!(i in value)) node.style[i] = '';
+			}
+			for (let i in value) {
+				node.style[i] = typeof value[i]==='number' && !NON_DIMENSION_PROPS[i] ? (value[i]+'px') : value[i];
+			}
+		}
+	}
+	else if (name==='dangerouslySetInnerHTML') {
+		if (value) node.innerHTML = value.__html;
+	}
+	else if (name[0]=='o' && name[1]=='n') {
+		let l = node._listeners || (node._listeners = {});
+		name = toLowerCase(name.substring(2));
+		// @TODO: this might be worth it later, un-breaks focus/blur bubbling in IE9:
+		// if (node.attachEvent) name = name=='focus'?'focusin':name=='blur'?'focusout':name;
+		if (value) {
+			if (!l[name]) node.addEventListener(name, eventProxy, !!NON_BUBBLING_EVENTS[name]);
+		}
+		else if (l[name]) {
+			node.removeEventListener(name, eventProxy, !!NON_BUBBLING_EVENTS[name]);
+		}
+		l[name] = value;
+	}
+	else if (name!=='list' && name!=='type' && !isSvg && name in node) {
+		setProperty(node, name, value==null ? '' : value);
+		if (value==null || value===false) node.removeAttribute(name);
+	}
+	else {
+		let ns = isSvg && name.match(/^xlink\:?(.+)/);
+		if (value==null || value===false) {
+			if (ns) node.removeAttributeNS('http://www.w3.org/1999/xlink', toLowerCase(ns[1]));
+			else node.removeAttribute(name);
+		}
+		else if (typeof value!=='object' && !isFunction(value)) {
+			if (ns) node.setAttributeNS('http://www.w3.org/1999/xlink', toLowerCase(ns[1]), value);
+			else node.setAttribute(name, value);
+		}
+	}
+}
+
+
+/** Attempt to set a DOM property to the given value.
+ *	IE & FF throw for certain property-value combinations.
+ */
+function setProperty(node, name, value) {
+	try {
+		node[name] = value;
+	} catch (e) { }
+}
+
+
+/** Proxy an event to hooked event handlers
+ *	@private
+ */
+function eventProxy(e) {
+	return this._listeners[e.type](options.event && options.event(e) || e);
+}