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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/. */
this.EXPORTED_SYMBOLS = [ "CharsetMenu" ];
const { classes: Cc, interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyGetter(this, "gBundle", function() {
const kUrl = "chrome://browser/locale/charsetMenu.properties";
return Services.strings.createBundle(kUrl);
});
/**
* This set contains encodings that are in the Encoding Standard, except:
* - XSS-dangerous encodings (except ISO-2022-JP which is assumed to be
* too common not to be included).
* - x-user-defined, which practically never makes sense as an end-user-chosen
* override.
* - Encodings that IE11 doesn't have in its correspoding menu.
*/
const kEncodings = new Set([
// Globally relevant
"UTF-8",
"windows-1252",
// Arabic
"windows-1256",
"ISO-8859-6",
// Baltic
"windows-1257",
"ISO-8859-4",
// "ISO-8859-13", // Hidden since not in menu in IE11
// Central European
"windows-1250",
"ISO-8859-2",
// Chinese, Simplified
"gbk",
"gb18030",
// Chinese, Traditional
"Big5",
// Cyrillic
"windows-1251",
"ISO-8859-5",
"KOI8-R",
"KOI8-U",
"IBM866", // Not in menu in Chromium. Maybe drop this?
// "x-mac-cyrillic", // Not in menu in IE11 or Chromium.
// Greek
"windows-1253",
"ISO-8859-7",
// Hebrew
"windows-1255",
"ISO-8859-8-I",
"ISO-8859-8",
// Japanese
"Shift_JIS",
"EUC-JP",
"ISO-2022-JP",
// Korean
"EUC-KR",
// Thai
"windows-874",
// Turkish
"windows-1254",
// Vietnamese
"windows-1258",
// Hiding rare European encodings that aren't in the menu in IE11 and would
// make the menu messy by sorting all over the place
// "ISO-8859-3",
// "ISO-8859-10",
// "ISO-8859-14",
// "ISO-8859-15",
// "ISO-8859-16",
// "macintosh"
]);
// Always at the start of the menu, in this order, followed by a separator.
const kPinned = [
"UTF-8",
"windows-1252"
];
this.CharsetMenu = Object.freeze({
build: function BuildCharsetMenu(event) {
let parent = event.target;
if (parent.lastChild.localName != "menuseparator") {
// Detector menu or charset menu already built
return;
}
let doc = parent.ownerDocument;
function createItem(encoding) {
let menuItem = doc.createElement("menuitem");
menuItem.setAttribute("type", "radio");
menuItem.setAttribute("name", "charsetGroup");
try {
menuItem.setAttribute("label", gBundle.GetStringFromName(encoding));
} catch (e) {
// Localization error but put *something* in the menu to recover.
menuItem.setAttribute("label", encoding);
}
try {
menuItem.setAttribute("accesskey",
gBundle.GetStringFromName(encoding + ".key"));
} catch (e) {
// Some items intentionally don't have an accesskey
}
menuItem.setAttribute("id", "charset." + encoding);
return menuItem;
}
// Clone the set in order to be able to remove the pinned encodings from
// the cloned set.
let encodings = new Set(kEncodings);
for (let encoding of kPinned) {
encodings.delete(encoding);
parent.appendChild(createItem(encoding));
}
parent.appendChild(doc.createElement("menuseparator"));
let list = [];
for (let encoding of encodings) {
list.push(createItem(encoding));
}
list.sort(function (a, b) {
let titleA = a.getAttribute("label");
let titleB = b.getAttribute("label");
// Normal sorting sorts the part in parenthesis in an order that
// happens to make the less frequently-used items first.
let index;
if ((index = titleA.indexOf("(")) > -1) {
titleA = titleA.substring(0, index);
}
if ((index = titleB.indexOf("(")) > -1) {
titleA = titleB.substring(0, index);
}
let comp = titleA.localeCompare(titleB);
if (comp) {
return comp;
}
// secondarily reverse sort by encoding name to sort "windows" or
// "shift_jis" first. This works regardless of localization, because
// the ids aren't localized.
let idA = a.getAttribute("id");
let idB = b.getAttribute("id");
if (idA < idB) {
return 1;
}
if (idB < idA) {
return -1;
}
return 0;
});
for (let item of list) {
parent.appendChild(item);
}
},
});
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