1 files changed, 65 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/src/components/request-list/RequestListColumnInitiator.js b/devtools/client/netmonitor/src/components/request-list/RequestListColumnInitiator.js
new file mode 100644
index 0000000000..0c08387fa1
--- /dev/null
+++ b/devtools/client/netmonitor/src/components/request-list/RequestListColumnInitiator.js
@@ -0,0 +1,65 @@
+/* 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 {
+  Component,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const dom = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+const {
+  getUrlBaseName,
+} = require("resource://devtools/client/netmonitor/src/utils/request-utils.js");
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+
+class RequestListColumnInitiator extends Component {
+  static get propTypes() {
+    return {
+      item: PropTypes.object.isRequired,
+      onInitiatorBadgeMouseDown: PropTypes.func.isRequired,
+    };
+  }
+
+  shouldComponentUpdate(nextProps) {
+    return this.props.item.cause !== nextProps.item.cause;
+  }
+
+  render() {
+    const {
+      item: { cause },
+      onInitiatorBadgeMouseDown,
+    } = this.props;
+
+    let initiator = "";
+    let lineNumber = "";
+
+    const lastFrameExists = cause && cause.lastFrame;
+    if (lastFrameExists) {
+      const { filename, lineNumber: _lineNumber } = cause.lastFrame;
+      initiator = getUrlBaseName(filename);
+      lineNumber = ":" + _lineNumber;
+    }
+
+    // Legacy server might send a numeric value. Display it as "unknown"
+    const causeType = typeof cause.type === "string" ? cause.type : "unknown";
+    const causeStr = lastFrameExists ? " (" + causeType + ")" : causeType;
+    return dom.td(
+      {
+        className: "requests-list-column requests-list-initiator",
+        title: initiator + lineNumber + causeStr,
+      },
+      dom.div(
+        {
+          className: "requests-list-initiator-lastframe",
+          onMouseDown: onInitiatorBadgeMouseDown,
+        },
+        dom.span({ className: "requests-list-initiator-filename" }, initiator),
+        dom.span({ className: "requests-list-initiator-line" }, lineNumber)
+      ),
+      dom.div({ className: "requests-list-initiator-cause" }, causeStr)
+    );
+  }
+}
+
+module.exports = RequestListColumnInitiator;