fune/browser/components/preferences/browserLanguages.js
2018-10-18 16:48:12 +00:00

515 lines
16 KiB
JavaScript

/* 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 ../../../toolkit/content/preferencesBindings.js */
ChromeUtils.import("resource://gre/modules/Services.jsm");
ChromeUtils.defineModuleGetter(this, "AddonManager",
"resource://gre/modules/AddonManager.jsm");
ChromeUtils.defineModuleGetter(this, "AddonRepository",
"resource://gre/modules/addons/AddonRepository.jsm");
ChromeUtils.defineModuleGetter(this, "RemoteSettings",
"resource://services-settings/remote-settings.js");
async function installFromUrl(url, hash) {
let install = await AddonManager.getInstallForURL(
url, "application/x-xpinstall", hash);
return install.install();
}
async function dictionaryIdsForLocale(locale) {
let entries = await RemoteSettings("language-dictionaries").get({
filters: {id: locale},
});
if (entries.length > 0) {
return entries[0].dictionaries;
}
return [];
}
class OrderedListBox {
constructor({richlistbox, upButton, downButton, removeButton, onRemove}) {
this.richlistbox = richlistbox;
this.upButton = upButton;
this.downButton = downButton;
this.removeButton = removeButton;
this.onRemove = onRemove;
this.items = [];
this.richlistbox.addEventListener("select", () => this.setButtonState());
this.upButton.addEventListener("command", () => this.moveUp());
this.downButton.addEventListener("command", () => this.moveDown());
this.removeButton.addEventListener("command", () => this.removeItem());
}
get selectedItem() {
return this.items[this.richlistbox.selectedIndex];
}
setButtonState() {
let {upButton, downButton, removeButton} = this;
let {selectedIndex, itemCount} = this.richlistbox;
upButton.disabled = selectedIndex == 0;
downButton.disabled = selectedIndex == itemCount - 1;
removeButton.disabled = itemCount == 1 || !this.selectedItem.canRemove;
}
moveUp() {
let {selectedIndex} = this.richlistbox;
if (selectedIndex == 0) {
return;
}
let {items} = this;
let selectedItem = items[selectedIndex];
let prevItem = items[selectedIndex - 1];
items[selectedIndex - 1] = items[selectedIndex];
items[selectedIndex] = prevItem;
let prevEl = document.getElementById(prevItem.id);
let selectedEl = document.getElementById(selectedItem.id);
this.richlistbox.insertBefore(selectedEl, prevEl);
this.richlistbox.ensureElementIsVisible(selectedEl);
this.setButtonState();
}
moveDown() {
let {selectedIndex} = this.richlistbox;
if (selectedIndex == this.items.length - 1) {
return;
}
let {items} = this;
let selectedItem = items[selectedIndex];
let nextItem = items[selectedIndex + 1];
items[selectedIndex + 1] = items[selectedIndex];
items[selectedIndex] = nextItem;
let nextEl = document.getElementById(nextItem.id);
let selectedEl = document.getElementById(selectedItem.id);
this.richlistbox.insertBefore(nextEl, selectedEl);
this.richlistbox.ensureElementIsVisible(selectedEl);
this.setButtonState();
}
removeItem() {
let {selectedIndex} = this.richlistbox;
if (selectedIndex == -1) {
return;
}
let [item] = this.items.splice(selectedIndex, 1);
this.richlistbox.selectedItem.remove();
this.richlistbox.selectedIndex = Math.min(
selectedIndex, this.richlistbox.itemCount - 1);
this.richlistbox.ensureElementIsVisible(this.richlistbox.selectedItem);
this.onRemove(item);
}
setItems(items) {
this.items = items;
this.populate();
this.setButtonState();
}
/**
* Add an item to the top of the ordered list.
*
* @param {object} item The item to insert.
*/
addItem(item) {
this.items.unshift(item);
this.richlistbox.insertBefore(
this.createItem(item),
this.richlistbox.firstElementChild);
this.richlistbox.selectedIndex = 0;
this.richlistbox.ensureElementIsVisible(this.richlistbox.selectedItem);
}
populate() {
this.richlistbox.textContent = "";
let frag = document.createDocumentFragment();
for (let item of this.items) {
frag.appendChild(this.createItem(item));
}
this.richlistbox.appendChild(frag);
this.richlistbox.selectedIndex = 0;
this.richlistbox.ensureElementIsVisible(this.richlistbox.selectedItem);
}
createItem({id, label, value}) {
let listitem = document.createElement("richlistitem");
listitem.id = id;
listitem.setAttribute("value", value);
let labelEl = document.createElement("label");
labelEl.textContent = label;
listitem.appendChild(labelEl);
return listitem;
}
}
class SortedItemSelectList {
constructor({menulist, button, onSelect, onChange, compareFn}) {
this.menulist = menulist;
this.popup = menulist.firstElementChild;
this.button = button;
this.compareFn = compareFn;
this.items = [];
menulist.addEventListener("command", () => {
button.disabled = !menulist.selectedItem;
if (menulist.selectedItem) {
onChange(this.items[menulist.selectedIndex]);
}
});
button.addEventListener("command", () => {
if (!menulist.selectedItem) return;
let [item] = this.items.splice(menulist.selectedIndex, 1);
menulist.selectedItem.remove();
menulist.setAttribute("label", menulist.getAttribute("placeholder"));
button.disabled = true;
menulist.disabled = menulist.itemCount == 0;
menulist.selectedIndex = -1;
onSelect(item);
});
}
setItems(items) {
this.items = items.sort(this.compareFn);
this.populate();
}
populate() {
let {button, items, menulist, popup} = this;
popup.textContent = "";
let frag = document.createDocumentFragment();
for (let item of items) {
frag.appendChild(this.createItem(item));
}
popup.appendChild(frag);
menulist.setAttribute("label", menulist.getAttribute("placeholder"));
menulist.disabled = menulist.itemCount == 0;
menulist.selectedIndex = -1;
button.disabled = true;
}
/**
* Add an item to the list sorted by the label.
*
* @param {object} item The item to insert.
*/
addItem(item) {
let {compareFn, items, menulist, popup} = this;
// Find the index of the item to insert before.
let i = items.findIndex(el => compareFn(el, item) < 0);
items.splice(i, 0, item);
popup.insertBefore(this.createItem(item), menulist.getItemAtIndex(i));
menulist.disabled = menulist.itemCount == 0;
}
createItem({label, value, className, disabled}) {
let item = document.createElement("menuitem");
item.value = value;
item.setAttribute("label", label);
if (className)
item.classList.add(className);
if (disabled)
item.setAttribute("disabled", "true");
return item;
}
/**
* Disable the inputs and set a data-l10n-id on the menulist. This can be
* reverted with `enableWithMessageId()`.
*/
disableWithMessageId(messageId) {
this.menulist.setAttribute("data-l10n-id", messageId);
this.menulist.setAttribute("image", "chrome://browser/skin/tabbrowser/tab-connecting.png");
this.menulist.disabled = true;
this.button.disabled = true;
}
/**
* Enable the inputs and set a data-l10n-id on the menulist. This can be
* reverted with `disableWithMessageId()`.
*/
enableWithMessageId(messageId) {
this.menulist.setAttribute("data-l10n-id", messageId);
this.menulist.removeAttribute("image");
this.menulist.disabled = this.menulist.itemCount == 0;
this.button.disabled = !this.menulist.selectedItem;
}
}
function getLocaleDisplayInfo(localeCodes) {
let availableLocales = new Set(Services.locale.availableLocales);
let packagedLocales = new Set(Services.locale.packagedLocales);
let localeNames = Services.intl.getLocaleDisplayNames(undefined, localeCodes);
return localeCodes.map((code, i) => {
return {
id: "locale-" + code,
label: localeNames[i],
value: code,
canRemove: !packagedLocales.has(code),
installed: availableLocales.has(code),
};
});
}
function compareItems(a, b) {
// Sort by installed.
if (a.installed != b.installed) {
return a.installed ? -1 : 1;
// The search label is always last.
} else if (a.value == "search") {
return 1;
} else if (b.value == "search") {
return -1;
// If both items are locales, sort by label.
} else if (a.value && b.value) {
return a.label.localeCompare(b.label);
// One of them is a label, put it first.
} else if (a.value) {
return 1;
}
return -1;
}
var gBrowserLanguagesDialog = {
_availableLocales: null,
_requestedLocales: null,
requestedLocales: null,
get downloadEnabled() {
// Downloading langpacks isn't always supported, check the pref.
return Services.prefs.getBoolPref("intl.multilingual.downloadEnabled");
},
beforeAccept() {
this.requestedLocales = this.getRequestedLocales();
return true;
},
async onLoad() {
// Maintain the previously requested locales even if we cancel out.
let {requesting, search} = window.arguments[0] || {};
this.requestedLocales = requesting;
let requested = this.requestedLocales || Services.locale.requestedLocales;
let requestedSet = new Set(requested);
let available = Services.locale.availableLocales
.filter(locale => !requestedSet.has(locale));
this.initRequestedLocales(requested);
await this.initAvailableLocales(available, search);
this.initialized = true;
},
initRequestedLocales(requested) {
this._requestedLocales = new OrderedListBox({
richlistbox: document.getElementById("requestedLocales"),
upButton: document.getElementById("up"),
downButton: document.getElementById("down"),
removeButton: document.getElementById("remove"),
onRemove: (item) => this.requestedLocaleRemoved(item),
});
this._requestedLocales.setItems(getLocaleDisplayInfo(requested));
},
async initAvailableLocales(available, search) {
this._availableLocales = new SortedItemSelectList({
menulist: document.getElementById("availableLocales"),
button: document.getElementById("add"),
compareFn: compareItems,
onSelect: (item) => this.availableLanguageSelected(item),
onChange: (item) => {
this.hideError();
if (item.value == "search") {
this.loadLocalesFromAMO();
}
},
});
// Populate the list with the installed locales even if the user is
// searching in case the download fails.
await this.loadLocalesFromInstalled(available);
// If the user opened this from the "Search for more languages" option,
// search AMO for available locales.
if (search) {
return this.loadLocalesFromAMO();
}
return undefined;
},
async loadLocalesFromAMO() {
if (!this.downloadEnabled) {
return;
}
// Disable the dropdown while we hit the network.
this._availableLocales.disableWithMessageId("browser-languages-searching");
// Fetch the available langpacks from AMO.
let availableLangpacks;
try {
availableLangpacks = await AddonRepository.getAvailableLangpacks();
} catch (e) {
this.showError();
return;
}
// Store the available langpack info for later use.
this.availableLangpacks = new Map();
for (let {target_locale, url, hash} of availableLangpacks) {
this.availableLangpacks.set(target_locale, {url, hash});
}
// Create a list of installed locales to hide.
let installedLocales = new Set([
...Services.locale.requestedLocales,
...Services.locale.availableLocales,
]);
let availableLocales = availableLangpacks
.filter(({target_locale}) => !installedLocales.has(target_locale))
.map(lang => lang.target_locale);
let availableItems = getLocaleDisplayInfo(availableLocales);
availableItems.push({
label: await document.l10n.formatValue("browser-languages-available-label"),
className: "label-item",
disabled: true,
installed: false,
});
let items = this._availableLocales.items;
// Drop the search item.
items.pop();
items = items.concat(availableItems);
// Update the dropdown and enable it again.
this._availableLocales.setItems(items);
this._availableLocales.enableWithMessageId("browser-languages-select-language");
},
async loadLocalesFromInstalled(available) {
let items;
if (available.length > 0) {
items = getLocaleDisplayInfo(available);
items.push(await this.createInstalledLabel());
} else {
items = [];
}
if (this.downloadEnabled) {
items.push({
label: await document.l10n.formatValue("browser-languages-search"),
value: "search",
});
}
this._availableLocales.setItems(items);
},
async availableLanguageSelected(item) {
if (Services.locale.availableLocales.includes(item.value)) {
this.requestLocalLanguage(item);
} else if (this.availableLangpacks.has(item.value)) {
await this.requestRemoteLanguage(item);
} else {
this.showError();
}
},
requestLocalLanguage(item, available) {
this._requestedLocales.addItem(item);
let requestedCount = this._requestedLocales.items.length;
let availableCount = Services.locale.availableLocales.length;
if (requestedCount == availableCount) {
// Remove the installed label, they're all installed.
this._availableLocales.items.shift();
this._availableLocales.setItems(this._availableLocales.items);
}
},
async requestRemoteLanguage(item) {
this._availableLocales.disableWithMessageId(
"browser-languages-downloading");
let {url, hash} = this.availableLangpacks.get(item.value);
try {
await installFromUrl(url, hash);
} catch (e) {
this.showError();
return;
}
item.installed = true;
this._requestedLocales.addItem(item);
this._availableLocales.enableWithMessageId(
"browser-languages-select-language");
// This is an async task that will install the recommended dictionaries for
// this locale. This will fail silently at least until a management UI is
// added in bug 1493705.
this.installDictionariesForLanguage(item.value);
},
async installDictionariesForLanguage(locale) {
try {
let ids = await dictionaryIdsForLocale(locale);
let addonInfos = await AddonRepository.getAddonsByIDs(ids);
await Promise.all(addonInfos.map(
info => installFromUrl(info.sourceURI.spec)));
} catch (e) {
Cu.reportError(e);
}
},
showError() {
document.querySelectorAll(".warning-message-separator")
.forEach(separator => separator.classList.add("thin"));
document.getElementById("warning-message").hidden = false;
this._availableLocales.enableWithMessageId("browser-languages-select-language");
},
hideError() {
document.querySelectorAll(".warning-message-separator")
.forEach(separator => separator.classList.remove("thin"));
document.getElementById("warning-message").hidden = true;
},
getRequestedLocales() {
return this._requestedLocales.items.map(item => item.value);
},
async requestedLocaleRemoved(item) {
this._availableLocales.addItem(item);
// If the item we added is at the top of the list, it needs the label.
if (this._availableLocales.items[0] == item) {
this._availableLocales.addItem(await this.createInstalledLabel());
}
},
async createInstalledLabel() {
return {
label: await document.l10n.formatValue("browser-languages-installed-label"),
className: "label-item",
disabled: true,
installed: true,
};
},
};