1 files changed, 62 insertions, 0 deletions
diff --git a/devtools/client/shared/components/menu/utils.js b/devtools/client/shared/components/menu/utils.js
new file mode 100644
index 0000000000..e6fca96822
--- /dev/null
+++ b/devtools/client/shared/components/menu/utils.js
@@ -0,0 +1,62 @@
+/* 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 Menu = require("resource://devtools/client/framework/menu.js");
+const MenuItem = require("resource://devtools/client/framework/menu-item.js");
+
+/**
+ * Helper function for opening context menu.
+ *
+ * @param {Array} items
+ *        List of menu items.
+ * @param {Object} options:
+ * @property {Element} button
+ *           Button element used to open the menu.
+ * @property {Number} screenX
+ *           Screen x coordinate of the menu on the screen.
+ * @property {Number} screenY
+ *           Screen y coordinate of the menu on the screen.
+ */
+function showMenu(items, options) {
+  if (items.length === 0) {
+    return;
+  }
+
+  // Build the menu object from provided menu items.
+  const menu = new Menu();
+  items.forEach(item => {
+    if (item == "-") {
+      item = { type: "separator" };
+    }
+
+    const menuItem = new MenuItem(item);
+    const subItems = item.submenu;
+
+    if (subItems) {
+      const subMenu = new Menu();
+      subItems.forEach(subItem => {
+        subMenu.append(new MenuItem(subItem));
+      });
+      menuItem.submenu = subMenu;
+    }
+
+    menu.append(menuItem);
+  });
+
+  // Calculate position on the screen according to
+  // the parent button if available.
+  if (options.button) {
+    menu.popupAtTarget(options.button);
+  } else {
+    const screenX = options.screenX;
+    const screenY = options.screenY;
+    menu.popup(screenX, screenY, window.document);
+  }
+}
+
+module.exports = {
+  showMenu,
+};