tor-browser

fonts.js (5616B)

---

/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*- */
/* 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/. */

/* import-globals-from /browser/base/content/utilityOverlay.js */
/* import-globals-from /toolkit/mozapps/preferences/fontbuilder.js */

// browser.display.languageList LOCK ALL when LOCKED

const kDefaultFontType = "font.default.%LANG%";
const kFontNameFmtSerif = "font.name.serif.%LANG%";
const kFontNameFmtSansSerif = "font.name.sans-serif.%LANG%";
const kFontNameFmtMonospace = "font.name.monospace.%LANG%";
const kFontNameListFmtSerif = "font.name-list.serif.%LANG%";
const kFontNameListFmtSansSerif = "font.name-list.sans-serif.%LANG%";
const kFontNameListFmtMonospace = "font.name-list.monospace.%LANG%";
const kFontSizeFmtVariable = "font.size.variable.%LANG%";
const kFontSizeFmtFixed = "font.size.monospace.%LANG%";
const kFontMinSizeFmt = "font.minimum-size.%LANG%";

window.addEventListener("load", () => gFontsDialog.onLoad());

Preferences.addAll([
 { id: "font.language.group", type: "string" },
 { id: "browser.display.use_document_fonts", type: "int" },
]);

var gFontsDialog = {
 _selectLanguageGroupPromise: Promise.resolve(),

 onLoad() {
   document
     .getElementById("key_close")
     .addEventListener("command", event => Preferences.close(event));

   Preferences.addSyncFromPrefListener(
     document.getElementById("selectLangs"),
     () => this.readFontLanguageGroup()
   );
   Preferences.addSyncFromPrefListener(
     document.getElementById("useDocumentFonts"),
     () => this.readUseDocumentFonts()
   );
   Preferences.addSyncToPrefListener(
     document.getElementById("useDocumentFonts"),
     () => this.writeUseDocumentFonts()
   );
   for (let id of ["serif", "sans-serif", "monospace"]) {
     let el = document.getElementById(id);
     Preferences.addSyncFromPrefListener(el, () =>
       FontBuilder.readFontSelection(el)
     );
   }
 },

 _selectLanguageGroup(aLanguageGroup) {
   this._selectLanguageGroupPromise = (async () => {
     // Avoid overlapping language group selections by awaiting the resolution
     // of the previous one.  We do this because this function is re-entrant,
     // as inserting <preference> elements into the DOM sometimes triggers a call
     // back into this function.  And since this function is also asynchronous,
     // that call can enter this function before the previous run has completed,
     // which would corrupt the font menulists.  Awaiting the previous call's
     // resolution avoids that fate.
     await this._selectLanguageGroupPromise;

     var prefs = [
       {
         format: kDefaultFontType,
         type: "string",
         element: "defaultFontType",
         fonttype: null,
       },
       {
         format: kFontNameFmtSerif,
         type: "fontname",
         element: "serif",
         fonttype: "serif",
       },
       {
         format: kFontNameFmtSansSerif,
         type: "fontname",
         element: "sans-serif",
         fonttype: "sans-serif",
       },
       {
         format: kFontNameFmtMonospace,
         type: "fontname",
         element: "monospace",
         fonttype: "monospace",
       },
       {
         format: kFontNameListFmtSerif,
         type: "unichar",
         element: null,
         fonttype: "serif",
       },
       {
         format: kFontNameListFmtSansSerif,
         type: "unichar",
         element: null,
         fonttype: "sans-serif",
       },
       {
         format: kFontNameListFmtMonospace,
         type: "unichar",
         element: null,
         fonttype: "monospace",
       },
       {
         format: kFontSizeFmtVariable,
         type: "int",
         element: "sizeVar",
         fonttype: null,
       },
       {
         format: kFontSizeFmtFixed,
         type: "int",
         element: "sizeMono",
         fonttype: null,
       },
       {
         format: kFontMinSizeFmt,
         type: "int",
         element: "minSize",
         fonttype: null,
       },
     ];
     for (var i = 0; i < prefs.length; ++i) {
       var name = prefs[i].format.replace(/%LANG%/, aLanguageGroup);
       var preference = Preferences.get(name);
       if (!preference) {
         preference = Preferences.add({ id: name, type: prefs[i].type });
       }

       if (!prefs[i].element) {
         continue;
       }

       var element = document.getElementById(prefs[i].element);
       if (element) {
         element.setAttribute("preference", preference.id);

         if (prefs[i].fonttype) {
           await FontBuilder.buildFontList(
             aLanguageGroup,
             prefs[i].fonttype,
             element
           );
         }

         preference.setElementValue(element);
       }
     }
   })().catch(console.error);
 },

 readFontLanguageGroup() {
   let languageGroup = Preferences.get("font.language.group").value;
   let rv = undefined;
   if (!languageGroup) {
     languageGroup = Services.locale.fontLanguageGroup;
     rv = languageGroup;
   }
   this._selectLanguageGroup(languageGroup);
   return rv;
 },

 readUseDocumentFonts() {
   var preference = Preferences.get("browser.display.use_document_fonts");
   return preference.value == 1;
 },

 writeUseDocumentFonts() {
   var useDocumentFonts = document.getElementById("useDocumentFonts");
   return useDocumentFonts.checked ? 1 : 0;
 },
};