1 files changed, 184 insertions, 0 deletions
diff --git a/devtools/client/shared/components/tree/tree-row.js b/devtools/client/shared/components/tree/tree-row.js
new file mode 100644
index 000000000..adfb1f3ae
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+++ b/devtools/client/shared/components/tree/tree-row.js
@@ -0,0 +1,184 @@
+/* -*- 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");
+  const ReactDOM = require("devtools/client/shared/vendor/react-dom");
+
+  // Tree
+  const TreeCell = React.createFactory(require("./tree-cell"));
+  const LabelCell = React.createFactory(require("./label-cell"));
+
+  // Shortcuts
+  const { tr } = React.DOM;
+  const PropTypes = React.PropTypes;
+
+  /**
+   * This template represents a node in TreeView component. It's rendered
+   * using <tr> element (the entire tree is one big <table>).
+   */
+  let TreeRow = React.createClass({
+    displayName: "TreeRow",
+
+    // See TreeView component for more details about the props and
+    // the 'member' object.
+    propTypes: {
+      member: PropTypes.shape({
+        object: PropTypes.obSject,
+        name: PropTypes.sring,
+        type: PropTypes.string.isRequired,
+        rowClass: PropTypes.string.isRequired,
+        level: PropTypes.number.isRequired,
+        hasChildren: PropTypes.bool,
+        value: PropTypes.any,
+        open: PropTypes.bool.isRequired,
+        path: PropTypes.string.isRequired,
+        hidden: PropTypes.bool,
+      }),
+      decorator: PropTypes.object,
+      renderCell: PropTypes.object,
+      renderLabelCell: PropTypes.object,
+      columns: PropTypes.array.isRequired,
+      provider: PropTypes.object.isRequired,
+      onClick: PropTypes.func.isRequired
+    },
+
+    componentWillReceiveProps(nextProps) {
+      // I don't like accessing the underlying DOM elements directly,
+      // but this optimization makes the filtering so damn fast!
+      // The row doesn't have to be re-rendered, all we really need
+      // to do is toggling a class name.
+      // The important part is that DOM elements don't need to be
+      // re-created when they should appear again.
+      if (nextProps.member.hidden != this.props.member.hidden) {
+        let row = ReactDOM.findDOMNode(this);
+        row.classList.toggle("hidden");
+      }
+    },
+
+    /**
+     * Optimize row rendering. If props are the same do not render.
+     * This makes the rendering a lot faster!
+     */
+    shouldComponentUpdate: function (nextProps) {
+      let props = ["name", "open", "value", "loading"];
+      for (let p in props) {
+        if (nextProps.member[props[p]] != this.props.member[props[p]]) {
+          return true;
+        }
+      }
+
+      return false;
+    },
+
+    getRowClass: function (object) {
+      let decorator = this.props.decorator;
+      if (!decorator || !decorator.getRowClass) {
+        return [];
+      }
+
+      // Decorator can return a simple string or array of strings.
+      let classNames = decorator.getRowClass(object);
+      if (!classNames) {
+        return [];
+      }
+
+      if (typeof classNames == "string") {
+        classNames = [classNames];
+      }
+
+      return classNames;
+    },
+
+    render: function () {
+      let member = this.props.member;
+      let decorator = this.props.decorator;
+
+      // Compute class name list for the <tr> element.
+      let classNames = this.getRowClass(member.object) || [];
+      classNames.push("treeRow");
+      classNames.push(member.type + "Row");
+
+      if (member.hasChildren) {
+        classNames.push("hasChildren");
+      }
+
+      if (member.open) {
+        classNames.push("opened");
+      }
+
+      if (member.loading) {
+        classNames.push("loading");
+      }
+
+      if (member.hidden) {
+        classNames.push("hidden");
+      }
+
+      // The label column (with toggle buttons) is usually
+      // the first one, but there might be cases (like in
+      // the Memory panel) where the toggling is done
+      // in the last column.
+      let cells = [];
+
+      // Get components for rendering cells.
+      let renderCell = this.props.renderCell || RenderCell;
+      let renderLabelCell = this.props.renderLabelCell || RenderLabelCell;
+      if (decorator && decorator.renderLabelCell) {
+        renderLabelCell = decorator.renderLabelCell(member.object) ||
+          renderLabelCell;
+      }
+
+      // Render a cell for every column.
+      this.props.columns.forEach(col => {
+        let props = Object.assign({}, this.props, {
+          key: col.id,
+          id: col.id,
+          value: this.props.provider.getValue(member.object, col.id)
+        });
+
+        if (decorator && decorator.renderCell) {
+          renderCell = decorator.renderCell(member.object, col.id);
+        }
+
+        let render = (col.id == "default") ? renderLabelCell : renderCell;
+
+        // Some cells don't have to be rendered. This happens when some
+        // other cells span more columns. Note that the label cells contains
+        // toggle buttons and should be usually there unless we are rendering
+        // a simple non-expandable table.
+        if (render) {
+          cells.push(render(props));
+        }
+      });
+
+      // Render tree row
+      return (
+        tr({
+          className: classNames.join(" "),
+          onClick: this.props.onClick},
+          cells
+        )
+      );
+    }
+  });
+
+  // Helpers
+
+  let RenderCell = props => {
+    return TreeCell(props);
+  };
+
+  let RenderLabelCell = props => {
+    return LabelCell(props);
+  };
+
+  // Exports from this module
+  module.exports = TreeRow;
+});