The Tor Browser: toolkit/modules/SelectParentHelper.jsm@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 "use strict";

     7 this.EXPORTED_SYMBOLS = [

     8   "SelectParentHelper"

     9 ];

    11 let currentBrowser = null;

    13 this.SelectParentHelper = {

    14   populate: function(popup, items, selectedIndex) {

    15     // Clear the current contents of the popup

    16     popup.textContent = "";

    17     populateChildren(popup, items, selectedIndex);

    18   },

    20   open: function(browser, popup, rect) {

    21     currentBrowser = browser;

    22     this._registerListeners(popup);

    23     popup.hidden = false;

    25     let {x, y} = browser.mapScreenCoordinatesFromContent(rect.left, rect.top + rect.height);

    26     popup.openPopupAtScreen(x, y);

    27   },

    29   hide: function(popup) {

    30     popup.hidePopup();

    31   },

    33   handleEvent: function(event) {

    34     let popup = event.currentTarget;

    36     switch (event.type) {

    37       case "command":

    38         if (event.target.hasAttribute("value")) {

    39           currentBrowser.messageManager.sendAsyncMessage("Forms:SelectDropDownItem", {

    40             value: event.target.value

    41           });

    42         }

    43         popup.hidePopup();

    44         break;

    46       case "popuphidden":

    47         currentBrowser.messageManager.sendAsyncMessage("Forms:DismissedDropDown", {});

    48         currentBrowser = null;

    49         this._unregisterListeners(popup);

    50         break;

    51     }

    52   },

    54   _registerListeners: function(popup) {

    55     popup.addEventListener("command", this);

    56     popup.addEventListener("popuphidden", this);

    57   },

    59   _unregisterListeners: function(popup) {

    60     popup.removeEventListener("command", this);

    61     popup.removeEventListener("popuphidden", this);

    62   },

    64 };

    66 function populateChildren(element, options, selectedIndex, startIndex = 0, isGroup = false) {

    67   let index = startIndex;

    69   for (let option of options) {

    70     let item = element.ownerDocument.createElement("menuitem");

    71     item.setAttribute("label", option.textContent);

    72     item.setAttribute("type", "radio");

    74     if (index == selectedIndex) {

    75       item.setAttribute("checked", "true");

    76     }

    78     element.appendChild(item);

    80     if (option.children.length > 0) {

    81       item.classList.add("contentSelectDropdown-optgroup");

    82       item.setAttribute("disabled", "true");

    83       index = populateChildren(element, option.children, selectedIndex, index, true);

    84     } else {

    85       item.setAttribute("value", index++);

    87       if (isGroup) {

    88         item.classList.add("contentSelectDropdown-ingroup")

    89       }

    90     }

    91   }

    93   return index;

    94 }

The Tor Browser / file revision