1 files changed, 81 insertions, 0 deletions
diff --git a/devtools/client/shared/components/reps/event.js b/devtools/client/shared/components/reps/event.js
new file mode 100644
index 000000000..1d37e0150
--- /dev/null
+++ b/devtools/client/shared/components/reps/event.js
@@ -0,0 +1,81 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+// Make this available to both AMD and CJS environments
+define(function (require, exports, module) {
+  // ReactJS
+  const React = require("devtools/client/shared/vendor/react");
+
+  // Reps
+  const { createFactories, isGrip } = require("./rep-utils");
+  const { rep } = createFactories(require("./grip").Grip);
+
+  /**
+   * Renders DOM event objects.
+   */
+  let Event = React.createClass({
+    displayName: "event",
+
+    propTypes: {
+      object: React.PropTypes.object.isRequired
+    },
+
+    render: function () {
+      // Use `Object.assign` to keep `this.props` without changes because:
+      // 1. JSON.stringify/JSON.parse is slow.
+      // 2. Immutable.js is planned for the future.
+      let props = Object.assign({}, this.props);
+      props.object = Object.assign({}, this.props.object);
+      props.object.preview = Object.assign({}, this.props.object.preview);
+      props.object.preview.ownProperties = props.object.preview.properties;
+      delete props.object.preview.properties;
+      props.object.ownPropertyLength =
+        Object.keys(props.object.preview.ownProperties).length;
+
+      switch (props.object.class) {
+        case "MouseEvent":
+          props.isInterestingProp = (type, value, name) => {
+            return (name == "clientX" ||
+                    name == "clientY" ||
+                    name == "layerX" ||
+                    name == "layerY");
+          };
+          break;
+        case "KeyboardEvent":
+          props.isInterestingProp = (type, value, name) => {
+            return (name == "key" ||
+                    name == "charCode" ||
+                    name == "keyCode");
+          };
+          break;
+        case "MessageEvent":
+          props.isInterestingProp = (type, value, name) => {
+            return (name == "isTrusted" ||
+                    name == "data");
+          };
+          break;
+      }
+      return rep(props);
+    }
+  });
+
+  // Registration
+
+  function supportsObject(grip, type) {
+    if (!isGrip(grip)) {
+      return false;
+    }
+
+    return (grip.preview && grip.preview.kind == "DOMEvent");
+  }
+
+  // Exports from this module
+  exports.Event = {
+    rep: Event,
+    supportsObject: supportsObject
+  };
+});