Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 829 insertions, 0 deletions

diff --git a/toolkit/components/viewconfig/content/config.js b/toolkit/components/viewconfig/content/config.js
new file mode 100644
index 0000000000..ec69e5ba91
--- /dev/null
+++ b/toolkit/components/viewconfig/content/config.js
@@ -0,0 +1,829 @@
+// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+
+/* 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/. */
+
+const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
+
+const nsIPrefLocalizedString = Ci.nsIPrefLocalizedString;
+const nsISupportsString = Ci.nsISupportsString;
+const nsIPrefBranch = Ci.nsIPrefBranch;
+const nsIClipboardHelper = Ci.nsIClipboardHelper;
+
+const nsClipboardHelper_CONTRACTID = "@mozilla.org/widget/clipboardhelper;1";
+
+const gPrefBranch = Services.prefs;
+const gClipboardHelper = Cc[nsClipboardHelper_CONTRACTID].getService(
+  nsIClipboardHelper
+);
+
+var gLockProps = ["default", "user", "locked"];
+// we get these from a string bundle
+var gLockStrs = [];
+var gTypeStrs = [];
+
+const PREF_IS_DEFAULT_VALUE = 0;
+const PREF_IS_MODIFIED = 1;
+const PREF_IS_LOCKED = 2;
+
+var gPrefHash = {};
+var gPrefArray = [];
+var gPrefView = gPrefArray; // share the JS array
+var gSortedColumn = "prefCol";
+var gSortFunction = null;
+var gSortDirection = 1; // 1 is ascending; -1 is descending
+var gFilter = null;
+
+let gCategoriesRecordedOnce = new Set();
+
+var view = {
+  get rowCount() {
+    return gPrefView.length;
+  },
+  getCellText(index, col) {
+    if (!(index in gPrefView)) {
+      return "";
+    }
+
+    var value = gPrefView[index][col.id];
+
+    switch (col.id) {
+      case "lockCol":
+        return gLockStrs[value];
+      case "typeCol":
+        return gTypeStrs[value];
+      default:
+        return value;
+    }
+  },
+  getRowProperties(index) {
+    return "";
+  },
+  getCellProperties(index, col) {
+    if (index in gPrefView) {
+      return gLockProps[gPrefView[index].lockCol];
+    }
+
+    return "";
+  },
+  getColumnProperties(col) {
+    return "";
+  },
+  treebox: null,
+  selection: null,
+  isContainer(index) {
+    return false;
+  },
+  isContainerOpen(index) {
+    return false;
+  },
+  isContainerEmpty(index) {
+    return false;
+  },
+  isSorted() {
+    return true;
+  },
+  canDrop(index, orientation) {
+    return false;
+  },
+  drop(row, orientation) {},
+  setTree(out) {
+    this.treebox = out;
+  },
+  getParentIndex(rowIndex) {
+    return -1;
+  },
+  hasNextSibling(rowIndex, afterIndex) {
+    return false;
+  },
+  getLevel(index) {
+    return 1;
+  },
+  getImageSrc(row, col) {
+    return "";
+  },
+  toggleOpenState(index) {},
+  cycleHeader(col) {
+    var index = this.selection.currentIndex;
+    recordTelemetryOnce(gCategoryLabelForSortColumn[col.id]);
+    if (col.id == gSortedColumn) {
+      gSortDirection = -gSortDirection;
+      gPrefArray.reverse();
+      if (gPrefView != gPrefArray) {
+        gPrefView.reverse();
+      }
+      if (index >= 0) {
+        index = gPrefView.length - index - 1;
+      }
+    } else {
+      var pref = null;
+      if (index >= 0) {
+        pref = gPrefView[index];
+      }
+
+      var old = document.getElementById(gSortedColumn);
+      old.removeAttribute("sortDirection");
+      gPrefArray.sort((gSortFunction = gSortFunctions[col.id]));
+      if (gPrefView != gPrefArray) {
+        gPrefView.sort(gSortFunction);
+      }
+      gSortedColumn = col.id;
+      if (pref) {
+        index = getViewIndexOfPref(pref);
+      }
+    }
+    col.element.setAttribute(
+      "sortDirection",
+      gSortDirection > 0 ? "ascending" : "descending"
+    );
+    this.treebox.invalidate();
+    if (index >= 0) {
+      this.selection.select(index);
+      this.treebox.ensureRowIsVisible(index);
+    }
+  },
+  selectionChanged() {},
+  cycleCell(row, col) {},
+  isEditable(row, col) {
+    return false;
+  },
+  setCellValue(row, col, value) {},
+  setCellText(row, col, value) {},
+  isSeparator(index) {
+    return false;
+  },
+};
+
+// find the index in gPrefView of a pref object
+// or -1 if it does not exist in the filtered view
+function getViewIndexOfPref(pref) {
+  var low = -1,
+    high = gPrefView.length;
+  var index = (low + high) >> 1;
+  while (index > low) {
+    var mid = gPrefView[index];
+    if (mid == pref) {
+      return index;
+    }
+    if (gSortFunction(mid, pref) < 0) {
+      low = index;
+    } else {
+      high = index;
+    }
+    index = (low + high) >> 1;
+  }
+  return -1;
+}
+
+// find the index in gPrefView where a pref object belongs
+function getNearestViewIndexOfPref(pref) {
+  var low = -1,
+    high = gPrefView.length;
+  var index = (low + high) >> 1;
+  while (index > low) {
+    if (gSortFunction(gPrefView[index], pref) < 0) {
+      low = index;
+    } else {
+      high = index;
+    }
+    index = (low + high) >> 1;
+  }
+  return high;
+}
+
+// find the index in gPrefArray of a pref object
+function getIndexOfPref(pref) {
+  var low = -1,
+    high = gPrefArray.length;
+  var index = (low + high) >> 1;
+  while (index > low) {
+    var mid = gPrefArray[index];
+    if (mid == pref) {
+      return index;
+    }
+    if (gSortFunction(mid, pref) < 0) {
+      low = index;
+    } else {
+      high = index;
+    }
+    index = (low + high) >> 1;
+  }
+  return index;
+}
+
+function getNearestIndexOfPref(pref) {
+  var low = -1,
+    high = gPrefArray.length;
+  var index = (low + high) >> 1;
+  while (index > low) {
+    if (gSortFunction(gPrefArray[index], pref) < 0) {
+      low = index;
+    } else {
+      high = index;
+    }
+    index = (low + high) >> 1;
+  }
+  return high;
+}
+
+var gPrefListener = {
+  observe(subject, topic, prefName) {
+    if (topic != "nsPref:changed") {
+      return;
+    }
+
+    var arrayIndex = gPrefArray.length;
+    var viewIndex = arrayIndex;
+    var selectedIndex = view.selection.currentIndex;
+    var pref;
+    var updateView = false;
+    var updateArray = false;
+    var addedRow = false;
+    if (prefName in gPrefHash) {
+      pref = gPrefHash[prefName];
+      viewIndex = getViewIndexOfPref(pref);
+      arrayIndex = getIndexOfPref(pref);
+      fetchPref(prefName, arrayIndex);
+      // fetchPref replaces the existing pref object
+      pref = gPrefHash[prefName];
+      if (viewIndex >= 0) {
+        // Might need to update the filtered view
+        gPrefView[viewIndex] = gPrefHash[prefName];
+        view.treebox.invalidateRow(viewIndex);
+      }
+      if (gSortedColumn == "lockCol" || gSortedColumn == "valueCol") {
+        updateArray = true;
+        gPrefArray.splice(arrayIndex, 1);
+        if (gFilter && gFilter.test(pref.prefCol + ";" + pref.valueCol)) {
+          updateView = true;
+          gPrefView.splice(viewIndex, 1);
+        }
+      }
+    } else {
+      fetchPref(prefName, arrayIndex);
+      pref = gPrefArray.pop();
+      updateArray = true;
+      addedRow = true;
+      if (gFilter && gFilter.test(pref.prefCol + ";" + pref.valueCol)) {
+        updateView = true;
+      }
+    }
+    if (updateArray) {
+      // Reinsert in the data array
+      var newIndex = getNearestIndexOfPref(pref);
+      gPrefArray.splice(newIndex, 0, pref);
+
+      if (updateView) {
+        // View is filtered, reinsert in the view separately
+        newIndex = getNearestViewIndexOfPref(pref);
+        gPrefView.splice(newIndex, 0, pref);
+      } else if (gFilter) {
+        // View is filtered, but nothing to update
+        return;
+      }
+
+      if (addedRow) {
+        view.treebox.rowCountChanged(newIndex, 1);
+      }
+
+      // Invalidate the changed range in the view
+      var low = Math.min(viewIndex, newIndex);
+      var high = Math.max(viewIndex, newIndex);
+      view.treebox.invalidateRange(low, high);
+
+      if (selectedIndex == viewIndex) {
+        selectedIndex = newIndex;
+      } else if (selectedIndex >= low && selectedIndex <= high) {
+        selectedIndex += newIndex > viewIndex ? -1 : 1;
+      }
+      if (selectedIndex >= 0) {
+        view.selection.select(selectedIndex);
+        if (selectedIndex == newIndex) {
+          view.treebox.ensureRowIsVisible(selectedIndex);
+        }
+      }
+    }
+  },
+};
+
+function prefObject(prefName, prefIndex) {
+  this.prefCol = prefName;
+}
+
+prefObject.prototype = {
+  lockCol: PREF_IS_DEFAULT_VALUE,
+  typeCol: nsIPrefBranch.PREF_STRING,
+  valueCol: "",
+};
+
+function fetchPref(prefName, prefIndex) {
+  var pref = new prefObject(prefName);
+
+  gPrefHash[prefName] = pref;
+  gPrefArray[prefIndex] = pref;
+
+  if (gPrefBranch.prefIsLocked(prefName)) {
+    pref.lockCol = PREF_IS_LOCKED;
+  } else if (gPrefBranch.prefHasUserValue(prefName)) {
+    pref.lockCol = PREF_IS_MODIFIED;
+  }
+
+  try {
+    switch (gPrefBranch.getPrefType(prefName)) {
+      case gPrefBranch.PREF_BOOL:
+        pref.typeCol = gPrefBranch.PREF_BOOL;
+        // convert to a string
+        pref.valueCol = gPrefBranch.getBoolPref(prefName).toString();
+        break;
+      case gPrefBranch.PREF_INT:
+        pref.typeCol = gPrefBranch.PREF_INT;
+        // convert to a string
+        pref.valueCol = gPrefBranch.getIntPref(prefName).toString();
+        break;
+      default:
+      case gPrefBranch.PREF_STRING:
+        pref.valueCol = gPrefBranch.getStringPref(prefName);
+        // Try in case it's a localized string (will throw an exception if not)
+        if (
+          pref.lockCol == PREF_IS_DEFAULT_VALUE &&
+          /^chrome:\/\/.+\/locale\/.+\.properties/.test(pref.valueCol)
+        ) {
+          pref.valueCol = gPrefBranch.getComplexValue(
+            prefName,
+            nsIPrefLocalizedString
+          ).data;
+        }
+        break;
+    }
+  } catch (e) {
+    // Also catch obscure cases in which you can't tell in advance
+    // that the pref exists but has no user or default value...
+  }
+}
+
+async function onConfigLoad() {
+  let configContext = document.getElementById("configContext");
+  configContext.addEventListener("popupshowing", function(event) {
+    if (event.target == this) {
+      updateContextMenu();
+    }
+  });
+
+  let commandListeners = {
+    toggleSelected: ModifySelected,
+    modifySelected: ModifySelected,
+    copyPref,
+    copyName,
+    copyValue,
+    resetSelected: ResetSelected,
+  };
+
+  configContext.addEventListener("command", e => {
+    if (e.target.id in commandListeners) {
+      commandListeners[e.target.id]();
+    }
+  });
+
+  let configString = document.getElementById("configString");
+  configString.addEventListener("command", function() {
+    NewPref(nsIPrefBranch.PREF_STRING);
+  });
+
+  let configInt = document.getElementById("configInt");
+  configInt.addEventListener("command", function() {
+    NewPref(nsIPrefBranch.PREF_INT);
+  });
+
+  let configBool = document.getElementById("configBool");
+  configBool.addEventListener("command", function() {
+    NewPref(nsIPrefBranch.PREF_BOOL);
+  });
+
+  let keyVKReturn = document.getElementById("keyVKReturn");
+  keyVKReturn.addEventListener("command", ModifySelected);
+
+  let textBox = document.getElementById("textbox");
+  textBox.addEventListener("command", FilterPrefs);
+
+  let configFocuSearch = document.getElementById("configFocuSearch");
+  configFocuSearch.addEventListener("command", function() {
+    textBox.focus();
+  });
+
+  let configFocuSearch2 = document.getElementById("configFocuSearch2");
+  configFocuSearch2.addEventListener("command", function() {
+    textBox.focus();
+  });
+
+  let warningButton = document.getElementById("warningButton");
+  warningButton.addEventListener("command", ShowPrefs);
+
+  let configTree = document.getElementById("configTree");
+  configTree.addEventListener("select", function() {
+    window.updateCommands("select");
+  });
+
+  let configTreeBody = document.getElementById("configTreeBody");
+  configTreeBody.addEventListener("dblclick", function(event) {
+    if (event.button == 0) {
+      ModifySelected();
+    }
+  });
+
+  // Load strings
+  let [
+    lockDefault,
+    lockModified,
+    lockLocked,
+    typeString,
+    typeInt,
+    typeBool,
+  ] = await document.l10n.formatValues([
+    { id: "config-default" },
+    { id: "config-modified" },
+    { id: "config-locked" },
+    { id: "config-property-string" },
+    { id: "config-property-int" },
+    { id: "config-property-bool" },
+  ]);
+
+  gLockStrs[PREF_IS_DEFAULT_VALUE] = lockDefault;
+  gLockStrs[PREF_IS_MODIFIED] = lockModified;
+  gLockStrs[PREF_IS_LOCKED] = lockLocked;
+  gTypeStrs[nsIPrefBranch.PREF_STRING] = typeString;
+  gTypeStrs[nsIPrefBranch.PREF_INT] = typeInt;
+  gTypeStrs[nsIPrefBranch.PREF_BOOL] = typeBool;
+
+  var showWarning = gPrefBranch.getBoolPref("general.warnOnAboutConfig");
+
+  if (showWarning) {
+    document.getElementById("warningButton").focus();
+  } else {
+    ShowPrefs();
+  }
+}
+
+// Unhide the warning message
+function ShowPrefs() {
+  recordTelemetryOnce("Show");
+  gPrefBranch.getChildList("").forEach(fetchPref);
+
+  var descending = document.getElementsByAttribute(
+    "sortDirection",
+    "descending"
+  );
+  if (descending.item(0)) {
+    gSortedColumn = descending[0].id;
+    gSortDirection = -1;
+  } else {
+    var ascending = document.getElementsByAttribute(
+      "sortDirection",
+      "ascending"
+    );
+    if (ascending.item(0)) {
+      gSortedColumn = ascending[0].id;
+    } else {
+      document
+        .getElementById(gSortedColumn)
+        .setAttribute("sortDirection", "ascending");
+    }
+  }
+  gSortFunction = gSortFunctions[gSortedColumn];
+  gPrefArray.sort(gSortFunction);
+
+  gPrefBranch.addObserver("", gPrefListener);
+
+  var configTree = document.getElementById("configTree");
+  configTree.view = view;
+  configTree.controllers.insertControllerAt(0, configController);
+
+  document.getElementById("configDeck").setAttribute("selectedIndex", 1);
+  document.getElementById("configTreeKeyset").removeAttribute("disabled");
+  if (!document.getElementById("showWarningNextTime").checked) {
+    gPrefBranch.setBoolPref("general.warnOnAboutConfig", false);
+  }
+
+  // Process about:config?filter=<string>
+  var textbox = document.getElementById("textbox");
+  // About URIs don't support query params, so do this manually
+  var loc = document.location.href;
+  var matches = /[?&]filter\=([^&]+)/i.exec(loc);
+  if (matches) {
+    textbox.value = decodeURIComponent(matches[1]);
+  }
+
+  // Even if we did not set the filter string via the URL query,
+  // textbox might have been set via some other mechanism
+  if (textbox.value) {
+    FilterPrefs();
+  }
+  textbox.focus();
+}
+
+function onConfigUnload() {
+  if (
+    document.getElementById("configDeck").getAttribute("selectedIndex") == 1
+  ) {
+    gPrefBranch.removeObserver("", gPrefListener);
+    var configTree = document.getElementById("configTree");
+    configTree.view = null;
+    configTree.controllers.removeController(configController);
+  }
+}
+
+function FilterPrefs() {
+  if (
+    document.getElementById("configDeck").getAttribute("selectedIndex") != 1
+  ) {
+    return;
+  }
+
+  var substring = document.getElementById("textbox").value;
+  // Check for "/regex/[i]"
+  if (substring.charAt(0) == "/") {
+    recordTelemetryOnce("RegexSearch");
+    var r = substring.match(/^\/(.*)\/(i?)$/);
+    try {
+      gFilter = RegExp(r[1], r[2]);
+    } catch (e) {
+      return; // Do nothing on incomplete or bad RegExp
+    }
+  } else if (substring) {
+    recordTelemetryOnce("Search");
+    gFilter = RegExp(
+      substring
+        .replace(/([^* \w])/g, "\\$1")
+        .replace(/^\*+/, "")
+        .replace(/\*+/g, ".*"),
+      "i"
+    );
+  } else {
+    gFilter = null;
+  }
+
+  var prefCol =
+    view.selection && view.selection.currentIndex < 0
+      ? null
+      : gPrefView[view.selection.currentIndex].prefCol;
+  var oldlen = gPrefView.length;
+  gPrefView = gPrefArray;
+  if (gFilter) {
+    gPrefView = [];
+    for (var i = 0; i < gPrefArray.length; ++i) {
+      if (gFilter.test(gPrefArray[i].prefCol + ";" + gPrefArray[i].valueCol)) {
+        gPrefView.push(gPrefArray[i]);
+      }
+    }
+  }
+  view.treebox.invalidate();
+  view.treebox.rowCountChanged(oldlen, gPrefView.length - oldlen);
+  gotoPref(prefCol);
+}
+
+function prefColSortFunction(x, y) {
+  if (x.prefCol > y.prefCol) {
+    return gSortDirection;
+  }
+  if (x.prefCol < y.prefCol) {
+    return -gSortDirection;
+  }
+  return 0;
+}
+
+function lockColSortFunction(x, y) {
+  if (x.lockCol != y.lockCol) {
+    return gSortDirection * (y.lockCol - x.lockCol);
+  }
+  return prefColSortFunction(x, y);
+}
+
+function typeColSortFunction(x, y) {
+  if (x.typeCol != y.typeCol) {
+    return gSortDirection * (y.typeCol - x.typeCol);
+  }
+  return prefColSortFunction(x, y);
+}
+
+function valueColSortFunction(x, y) {
+  if (x.valueCol > y.valueCol) {
+    return gSortDirection;
+  }
+  if (x.valueCol < y.valueCol) {
+    return -gSortDirection;
+  }
+  return prefColSortFunction(x, y);
+}
+
+const gSortFunctions = {
+  prefCol: prefColSortFunction,
+  lockCol: lockColSortFunction,
+  typeCol: typeColSortFunction,
+  valueCol: valueColSortFunction,
+};
+
+const gCategoryLabelForSortColumn = {
+  prefCol: "SortByName",
+  lockCol: "SortByStatus",
+  typeCol: "SortByType",
+  valueCol: "SortByValue",
+};
+
+const configController = {
+  supportsCommand: function supportsCommand(command) {
+    return command == "cmd_copy";
+  },
+  isCommandEnabled: function isCommandEnabled(command) {
+    return view.selection && view.selection.currentIndex >= 0;
+  },
+  doCommand: function doCommand(command) {
+    copyPref();
+  },
+  onEvent: function onEvent(event) {},
+};
+
+function updateContextMenu() {
+  var lockCol = PREF_IS_LOCKED;
+  var typeCol = nsIPrefBranch.PREF_STRING;
+  var valueCol = "";
+  var copyDisabled = true;
+  var prefSelected = view.selection.currentIndex >= 0;
+
+  if (prefSelected) {
+    var prefRow = gPrefView[view.selection.currentIndex];
+    lockCol = prefRow.lockCol;
+    typeCol = prefRow.typeCol;
+    valueCol = prefRow.valueCol;
+    copyDisabled = false;
+  }
+
+  var copyPref = document.getElementById("copyPref");
+  copyPref.setAttribute("disabled", copyDisabled);
+
+  var copyName = document.getElementById("copyName");
+  copyName.setAttribute("disabled", copyDisabled);
+
+  var copyValue = document.getElementById("copyValue");
+  copyValue.setAttribute("disabled", copyDisabled);
+
+  var resetSelected = document.getElementById("resetSelected");
+  resetSelected.setAttribute("disabled", lockCol != PREF_IS_MODIFIED);
+
+  var canToggle = typeCol == nsIPrefBranch.PREF_BOOL && valueCol != "";
+  // indicates that a pref is locked or no pref is selected at all
+  var isLocked = lockCol == PREF_IS_LOCKED;
+
+  var modifySelected = document.getElementById("modifySelected");
+  modifySelected.setAttribute("disabled", isLocked);
+  modifySelected.hidden = canToggle;
+
+  var toggleSelected = document.getElementById("toggleSelected");
+  toggleSelected.setAttribute("disabled", isLocked);
+  toggleSelected.hidden = !canToggle;
+}
+
+function copyPref() {
+  recordTelemetryOnce("Copy");
+  var pref = gPrefView[view.selection.currentIndex];
+  gClipboardHelper.copyString(pref.prefCol + ";" + pref.valueCol);
+}
+
+function copyName() {
+  recordTelemetryOnce("CopyName");
+  gClipboardHelper.copyString(gPrefView[view.selection.currentIndex].prefCol);
+}
+
+function copyValue() {
+  recordTelemetryOnce("CopyValue");
+  gClipboardHelper.copyString(gPrefView[view.selection.currentIndex].valueCol);
+}
+
+function ModifySelected() {
+  recordTelemetryOnce("ModifyValue");
+  if (view.selection.currentIndex >= 0) {
+    ModifyPref(gPrefView[view.selection.currentIndex]);
+  }
+}
+
+function ResetSelected() {
+  recordTelemetryOnce("Reset");
+  var entry = gPrefView[view.selection.currentIndex];
+  gPrefBranch.clearUserPref(entry.prefCol);
+}
+
+async function NewPref(type) {
+  recordTelemetryOnce("CreateNew");
+  var result = { value: "" };
+  var dummy = { value: 0 };
+
+  let [newTitle, newPrompt] = await document.l10n.formatValues([
+    { id: "config-new-title", args: { type: gTypeStrs[type] } },
+    { id: "config-new-prompt" },
+  ]);
+
+  if (
+    Services.prompt.prompt(window, newTitle, newPrompt, result, null, dummy)
+  ) {
+    result.value = result.value.trim();
+    if (!result.value) {
+      return;
+    }
+
+    var pref;
+    if (result.value in gPrefHash) {
+      pref = gPrefHash[result.value];
+    } else {
+      pref = {
+        prefCol: result.value,
+        lockCol: PREF_IS_DEFAULT_VALUE,
+        typeCol: type,
+        valueCol: "",
+      };
+    }
+    if (ModifyPref(pref)) {
+      setTimeout(gotoPref, 0, result.value);
+    }
+  }
+}
+
+function gotoPref(pref) {
+  // make sure the pref exists and is displayed in the current view
+  var index = pref in gPrefHash ? getViewIndexOfPref(gPrefHash[pref]) : -1;
+  if (index >= 0) {
+    view.selection.select(index);
+    view.treebox.ensureRowIsVisible(index);
+  } else {
+    view.selection.clearSelection();
+    view.selection.currentIndex = -1;
+  }
+}
+
+async function ModifyPref(entry) {
+  if (entry.lockCol == PREF_IS_LOCKED) {
+    return false;
+  }
+
+  let [title] = await document.l10n.formatValues([
+    { id: "config-modify-title", args: { type: gTypeStrs[entry.typeCol] } },
+  ]);
+
+  if (entry.typeCol == nsIPrefBranch.PREF_BOOL) {
+    var check = { value: entry.valueCol == "false" };
+    if (
+      !entry.valueCol &&
+      !Services.prompt.select(
+        window,
+        title,
+        entry.prefCol,
+        [false, true],
+        check
+      )
+    ) {
+      return false;
+    }
+    gPrefBranch.setBoolPref(entry.prefCol, check.value);
+  } else {
+    var result = { value: entry.valueCol };
+    var dummy = { value: 0 };
+    if (
+      !Services.prompt.prompt(window, title, entry.prefCol, result, null, dummy)
+    ) {
+      return false;
+    }
+    if (entry.typeCol == nsIPrefBranch.PREF_INT) {
+      // | 0 converts to integer or 0; - 0 to float or NaN.
+      // Thus, this check should catch all cases.
+      var val = result.value | 0;
+      if (val != result.value - 0) {
+        const [err_title, err_text] = await document.l10n.formatValues([
+          { id: "config-nan-title" },
+          { id: "config-nan-text" },
+        ]);
+
+        Services.prompt.alert(window, err_title, err_text);
+        return false;
+      }
+      gPrefBranch.setIntPref(entry.prefCol, val);
+    } else {
+      gPrefBranch.setStringPref(entry.prefCol, result.value);
+    }
+  }
+
+  Services.prefs.savePrefFile(null);
+  return true;
+}
+
+function recordTelemetryOnce(categoryLabel) {
+  if (!gCategoriesRecordedOnce.has(categoryLabel)) {
+    // Don't raise an exception if Telemetry is not available.
+    try {
+      Services.telemetry
+        .getHistogramById("ABOUT_CONFIG_FEATURES_USAGE")
+        .add(categoryLabel);
+    } catch (ex) {}
+    gCategoriesRecordedOnce.add(categoryLabel);
+  }
+}
+
+window.onload = onConfigLoad;
+window.onunload = onConfigUnload;