1 files changed, 67 insertions, 0 deletions
diff --git a/devtools/client/inspector/extensions/components/ObjectTreeView.js b/devtools/client/inspector/extensions/components/ObjectTreeView.js
new file mode 100644
index 0000000000..1788f8d020
--- /dev/null
+++ b/devtools/client/inspector/extensions/components/ObjectTreeView.js
@@ -0,0 +1,67 @@
+/* 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";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+
+const {
+  REPS,
+  MODE,
+} = require("resource://devtools/client/shared/components/reps/index.js");
+const { Rep } = REPS;
+const TreeViewClass = require("resource://devtools/client/shared/components/tree/TreeView.js");
+const TreeView = createFactory(TreeViewClass);
+
+/**
+ * The ExpressionResultView React Component is used in the ExtensionSidebar component to
+ * provide a UI viewMode which shows a tree view of the passed JavaScript object.
+ */
+class ExpressionResultView extends PureComponent {
+  static get propTypes() {
+    return {
+      object: PropTypes.object.isRequired,
+    };
+  }
+
+  render() {
+    const { object } = this.props;
+
+    const columns = [
+      {
+        id: "value",
+      },
+    ];
+
+    // Render the node value (omitted on the root element if it has children).
+    const renderValue = props => {
+      if (props.member.level === 0 && props.member.hasChildren) {
+        return undefined;
+      }
+
+      return Rep(
+        Object.assign({}, props, {
+          cropLimit: 50,
+        })
+      );
+    };
+
+    return TreeView({
+      object,
+      mode: MODE.SHORT,
+      columns,
+      renderValue,
+      expandedNodes: TreeViewClass.getExpandedNodes(object, {
+        maxLevel: 1,
+        maxNodes: 1,
+      }),
+    });
+  }
+}
+
+module.exports = ExpressionResultView;