1 files changed, 101 insertions, 0 deletions
diff --git a/devtools/client/shared/components/tree/tree-cell.js b/devtools/client/shared/components/tree/tree-cell.js
new file mode 100644
index 000000000..f3c48510f
--- /dev/null
+++ b/devtools/client/shared/components/tree/tree-cell.js
@@ -0,0 +1,101 @@
+/* -*- 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) {
+  const React = require("devtools/client/shared/vendor/react");
+
+  // Shortcuts
+  const { td, span } = React.DOM;
+  const PropTypes = React.PropTypes;
+
+  /**
+   * This template represents a cell in TreeView row. It's rendered
+   * using <td> element (the row is <tr> and the entire tree is <table>).
+   */
+  let TreeCell = React.createClass({
+    displayName: "TreeCell",
+
+    // See TreeView component for detailed property explanation.
+    propTypes: {
+      value: PropTypes.any,
+      decorator: PropTypes.object,
+      id: PropTypes.string.isRequired,
+      member: PropTypes.object.isRequired,
+      renderValue: PropTypes.func.isRequired
+    },
+
+    /**
+     * Optimize cell rendering. Rerender cell content only if
+     * the value or expanded state changes.
+     */
+    shouldComponentUpdate: function (nextProps) {
+      return (this.props.value != nextProps.value) ||
+        (this.props.member.open != nextProps.member.open);
+    },
+
+    getCellClass: function (object, id) {
+      let decorator = this.props.decorator;
+      if (!decorator || !decorator.getCellClass) {
+        return [];
+      }
+
+      // Decorator can return a simple string or array of strings.
+      let classNames = decorator.getCellClass(object, id);
+      if (!classNames) {
+        return [];
+      }
+
+      if (typeof classNames == "string") {
+        classNames = [classNames];
+      }
+
+      return classNames;
+    },
+
+    render: function () {
+      let member = this.props.member;
+      let type = member.type || "";
+      let id = this.props.id;
+      let value = this.props.value;
+      let decorator = this.props.decorator;
+
+      // Compute class name list for the <td> element.
+      let classNames = this.getCellClass(member.object, id) || [];
+      classNames.push("treeValueCell");
+      classNames.push(type + "Cell");
+
+      // Render value using a default render function or custom
+      // provided function from props or a decorator.
+      let renderValue = this.props.renderValue || defaultRenderValue;
+      if (decorator && decorator.renderValue) {
+        renderValue = decorator.renderValue(member.object, id) || renderValue;
+      }
+
+      let props = Object.assign({}, this.props, {
+        object: value,
+      });
+
+      // Render me!
+      return (
+        td({ className: classNames.join(" ") },
+          span({}, renderValue(props))
+        )
+      );
+    }
+  });
+
+  // Default value rendering.
+  let defaultRenderValue = props => {
+    return (
+      props.object + ""
+    );
+  };
+
+  // Exports from this module
+  module.exports = TreeCell;
+});