implement

src/ui/public/Binder.js

@@ -0,0 +1,41 @@
+var $ = require('jquery');
+var d3 = require('d3');
+var callEach = require('lodash').callEach;
+var bindKey = require('lodash').bindKey;
+var rest = require('lodash').rest;
+
+function Binder($scope) {
+  this.disposal = [];
+  if ($scope) {
+    $scope.$on('$destroy', bindKey(this, 'destroy'));
+  }
+}
+
+Binder.prototype.jqOn = function (el/*, ...args */) {
+  var $el = $(el);
+  var args = rest(arguments);
+  $el.on.apply($el, args);
+  this.disposal.push(function () {
+    $el.off.apply($el, args);
+    $el = null;
+  });
+};
+
+Binder.prototype.fakeD3Bind = function (el, event, handler) {
+  this.jqOn(el, event, function (e) {
+    // mimick https://github.com/mbostock/d3/blob/3abb00113662463e5c19eb87cd33f6d0ddc23bc0/src/selection/on.js#L87-L94
+    var o = d3.event; // Events can be reentrant (e.g., focus).
+    d3.event = e;
+    try {
+      handler.apply(this, [this.__data__]);
+    } finally {
+      d3.event = o;
+    }
+  });
+};
+
+Binder.prototype.destroy = function () {
+  callEach(this.disposal.slice(0));
+};
+
+module.exports = Binder;