.

node_modules/@mixmark-io/domino/defineElement.js

@@ -0,0 +1,71 @@
+"use strict";
+
+var attributes = require('./attributes');
+var isApiWritable = require("./config").isApiWritable;
+
+module.exports = function(spec, defaultConstructor, tagList, tagNameToImpl) {
+  var c = spec.ctor;
+  if (c) {
+    var props = spec.props || {};
+
+    if (spec.attributes) {
+      for (var n in spec.attributes) {
+        var attr = spec.attributes[n];
+        if (typeof attr !== 'object' || Array.isArray(attr)) attr = {type: attr};
+        if (!attr.name) attr.name = n.toLowerCase();
+        props[n] = attributes.property(attr);
+      }
+    }
+
+    props.constructor = { value : c, writable: isApiWritable };
+    c.prototype = Object.create((spec.superclass || defaultConstructor).prototype, props);
+    if (spec.events) {
+      addEventHandlers(c, spec.events);
+    }
+    tagList[spec.name] = c;
+  }
+  else {
+    c = defaultConstructor;
+  }
+
+  (spec.tags || spec.tag && [spec.tag] || []).forEach(function(tag) {
+    tagNameToImpl[tag] = c;
+  });
+
+  return c;
+};
+
+function EventHandlerBuilder(body, document, form, element) {
+  this.body = body;
+  this.document = document;
+  this.form = form;
+  this.element = element;
+}
+
+EventHandlerBuilder.prototype.build = function () {
+  return () => {};
+};
+
+function EventHandlerChangeHandler(elt, name, oldval, newval) {
+  var doc = elt.ownerDocument || Object.create(null);
+  var form = elt.form || Object.create(null);
+  elt[name] = new EventHandlerBuilder(newval, doc, form, elt).build();
+}
+
+function addEventHandlers(c, eventHandlerTypes) {
+  var p = c.prototype;
+  eventHandlerTypes.forEach(function(type) {
+    // Define the event handler registration IDL attribute for this type
+    Object.defineProperty(p, "on" + type, {
+      get: function() {
+        return this._getEventHandler(type);
+      },
+      set: function(v) {
+        this._setEventHandler(type, v);
+      },
+    });
+
+    // Define special behavior for the content attribute as well
+    attributes.registerChangeHandler(c, "on" + type, EventHandlerChangeHandler);
+  });
+}