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path: root/browser/components/preferences/dialogs/blocklists.js
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/* 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 BASE_LIST_ID = "base";
const CONTENT_LIST_ID = "content";
const TRACK_SUFFIX = "-track-digest256";
const TRACKING_TABLE_PREF = "urlclassifier.trackingTable";
const LISTS_PREF_BRANCH = "browser.safebrowsing.provider.mozilla.lists.";

var gBlocklistManager = {
  _type: "",
  _blockLists: [],
  _tree: null,

  _view: {
    _rowCount: 0,
    get rowCount() {
      return this._rowCount;
    },
    getCellText(row, column) {
      if (column.id == "listCol") {
        let list = gBlocklistManager._blockLists[row];
        return list.name;
      }
      return "";
    },

    isSeparator(index) {
      return false;
    },
    isSorted() {
      return false;
    },
    isContainer(index) {
      return false;
    },
    setTree(tree) {},
    getImageSrc(row, column) {},
    getCellValue(row, column) {
      if (column.id == "selectionCol") {
        return gBlocklistManager._blockLists[row].selected;
      }
      return undefined;
    },
    cycleHeader(column) {},
    getRowProperties(row) {
      return "";
    },
    getColumnProperties(column) {
      return "";
    },
    getCellProperties(row, column) {
      if (column.id == "selectionCol") {
        return "checkmark";
      }

      return "";
    },
  },

  onLoad() {
    this.init();
    document.addEventListener("dialogaccept", () => this.onApplyChanges());
  },

  init() {
    if (this._type) {
      // reusing an open dialog, clear the old observer
      this.uninit();
    }

    this._type = "tracking";

    this._loadBlockLists();
  },

  uninit() {},

  onListSelected() {
    for (let list of this._blockLists) {
      list.selected = false;
    }
    this._blockLists[this._tree.currentIndex].selected = true;

    this._updateTree();
  },

  onApplyChanges() {
    let activeList = this._getActiveList();
    let selected = null;
    for (let list of this._blockLists) {
      if (list.selected) {
        selected = list;
        break;
      }
    }

    if (activeList !== selected.id) {
      let trackingTable = Services.prefs.getCharPref(TRACKING_TABLE_PREF);
      if (selected.id != CONTENT_LIST_ID) {
        trackingTable = trackingTable.replace(
          "," + CONTENT_LIST_ID + TRACK_SUFFIX,
          ""
        );
      } else {
        trackingTable += "," + CONTENT_LIST_ID + TRACK_SUFFIX;
      }
      Services.prefs.setCharPref(TRACKING_TABLE_PREF, trackingTable);

      // Force an update after changing the tracking protection table.
      let listmanager = Cc[
        "@mozilla.org/url-classifier/listmanager;1"
      ].getService(Ci.nsIUrlListManager);
      if (listmanager) {
        listmanager.forceUpdates(trackingTable);
      }
    }
  },

  async _loadBlockLists() {
    this._blockLists = [];

    // Load blocklists into a table.
    let branch = Services.prefs.getBranch(LISTS_PREF_BRANCH);
    let itemArray = branch.getChildList("");
    for (let itemName of itemArray) {
      try {
        let list = await this._createBlockList(itemName);
        this._blockLists.push(list);
      } catch (e) {
        // Ignore bogus or missing list name.
        continue;
      }
    }

    this._updateTree();
  },

  async _createBlockList(id) {
    let branch = Services.prefs.getBranch(LISTS_PREF_BRANCH);
    let l10nKey = branch.getCharPref(id);

    // eslint-disable-next-line mozilla/prefer-formatValues
    let [listName, description] = await document.l10n.formatValues([
      { id: `blocklist-item-${l10nKey}-listName` },
      { id: `blocklist-item-${l10nKey}-description` },
    ]);

    // eslint-disable-next-line mozilla/prefer-formatValues
    let name = await document.l10n.formatValue("blocklist-item-list-template", {
      listName,
      description,
    });

    return {
      id,
      name,
      selected: this._getActiveList() === id,
    };
  },

  _updateTree() {
    this._tree = document.getElementById("blocklistsTree");
    this._view._rowCount = this._blockLists.length;
    this._tree.view = this._view;
  },

  _getActiveList() {
    let trackingTable = Services.prefs.getCharPref(TRACKING_TABLE_PREF);
    return trackingTable.includes(CONTENT_LIST_ID)
      ? CONTENT_LIST_ID
      : BASE_LIST_ID;
  },
};