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/* -*- 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
"use strict";
/**
* The permission type to give to Services.perms for Translations.
*/
const TRANSLATIONS_PERMISSION = "translations";
/**
* The list of BCP-47 language tags that will trigger auto-translate.
*/
const ALWAYS_TRANSLATE_LANGS_PREF =
"browser.translations.alwaysTranslateLanguages";
/**
* The list of BCP-47 language tags that will prevent showing Translations UI.
*/
const NEVER_TRANSLATE_LANGS_PREF =
"browser.translations.neverTranslateLanguages";
ChromeUtils.defineESModuleGetters(this, {
});
function Tree(aId, aData) {
this._data = aData;
this._tree = document.getElementById(aId);
this._tree.view = this;
}
Tree.prototype = {
get tree() {
return this._tree;
},
get isEmpty() {
return !this._data.length;
},
get hasSelection() {
return this.selection.count > 0;
},
getSelectedItems() {
let result = [];
let rc = this.selection.getRangeCount();
for (let i = 0; i < rc; ++i) {
let min = {},
max = {};
this.selection.getRangeAt(i, min, max);
for (let j = min.value; j <= max.value; ++j) {
result.push(this._data[j]);
}
}
return result;
},
// nsITreeView implementation
get rowCount() {
return this._data.length;
},
getCellText(aRow) {
return this._data[aRow];
},
isSeparator() {
return false;
},
isSorted() {
return false;
},
isContainer() {
return false;
},
setTree() {},
getImageSrc() {},
getCellValue() {},
cycleHeader() {},
getRowProperties() {
return "";
},
getColumnProperties() {
return "";
},
getCellProperties() {
return "";
},
QueryInterface: ChromeUtils.generateQI(["nsITreeView"]),
};
function Lang(aCode, label) {
this.langCode = aCode;
this._label = label;
}
Lang.prototype = {
toString() {
return this._label;
},
};
var gTranslationsSettings = {
onLoad() {
if (this._neverTranslateSiteTree) {
// Re-using an open dialog, clear the old observers.
this.removeObservers();
}
// Load site permissions into an array.
this._neverTranslateSites = TranslationsParent.listNeverTranslateSites();
// Load language tags into arrays.
this._alwaysTranslateLangs = this.getAlwaysTranslateLanguages();
this._neverTranslateLangs = this.getNeverTranslateLanguages();
// Add observers for relevant prefs and permissions.
Services.obs.addObserver(this, "perm-changed");
Services.prefs.addObserver(ALWAYS_TRANSLATE_LANGS_PREF, this);
Services.prefs.addObserver(NEVER_TRANSLATE_LANGS_PREF, this);
// Build trees from the arrays.
this._alwaysTranslateLangsTree = new Tree(
"alwaysTranslateLanguagesTree",
this._alwaysTranslateLangs
);
this._neverTranslateLangsTree = new Tree(
"neverTranslateLanguagesTree",
this._neverTranslateLangs
);
this._neverTranslateSiteTree = new Tree(
"neverTranslateSitesTree",
this._neverTranslateSites
);
// Ensure the UI for each group is in the correct state.
this.onSelectAlwaysTranslateLanguage();
this.onSelectNeverTranslateLanguage();
this.onSelectNeverTranslateSite();
},
/**
* Retrieves the value of a char-pref splits its value into an
* array delimited by commas.
*
* This is used for the translations preferences which are comma-
* separated lists of BCP-47 language tags.
*
* @param {string} pref
* @returns {Array<string>}
*/
getLangsFromPref(pref) {
let rawLangs = Services.prefs.getCharPref(pref);
if (!rawLangs) {
return [];
}
let langArr = rawLangs.split(",");
let displayNames = Services.intl.getLanguageDisplayNames(
undefined,
langArr
);
let langs = langArr.map((lang, i) => new Lang(lang, displayNames[i]));
langs.sort();
return langs;
},
/**
* Retrieves the always-translate language tags as an array.
* @returns {Array<string>}
*/
getAlwaysTranslateLanguages() {
return this.getLangsFromPref(ALWAYS_TRANSLATE_LANGS_PREF);
},
/**
* Retrieves the never-translate language tags as an array.
* @returns {Array<string>}
*/
getNeverTranslateLanguages() {
return this.getLangsFromPref(NEVER_TRANSLATE_LANGS_PREF);
},
/**
* Handles updating the UI components on pref or permission changes.
*/
observe(aSubject, aTopic, aData) {
if (aTopic === "perm-changed") {
if (aData === "cleared") {
// Permissions have been cleared
if (!this._neverTranslateSites.length) {
// There were no sites with permissions set, nothing to do.
return;
}
// Update the tree based on the amount of permissions removed.
let removed = this._neverTranslateSites.splice(
0,
this._neverTranslateSites.length
);
this._neverTranslateSiteTree.tree.rowCountChanged(0, -removed.length);
} else {
let perm = aSubject.QueryInterface(Ci.nsIPermission);
if (perm.type != TRANSLATIONS_PERMISSION) {
// The updated permission was not for Translations, nothing to do.
return;
}
if (aData === "added") {
if (perm.capability != Services.perms.DENY_ACTION) {
// We are only showing data for sites we should never translate.
// If the permission is not DENY_ACTION, we don't care about it here.
return;
}
this._neverTranslateSites.push(perm.principal.origin);
this._neverTranslateSites.sort();
let tree = this._neverTranslateSiteTree.tree;
tree.rowCountChanged(0, 1);
tree.invalidate();
} else if (aData == "deleted") {
let index = this._neverTranslateSites.indexOf(perm.principal.origin);
if (index == -1) {
// The deleted permission was not in the tree, nothing to do.
return;
}
this._neverTranslateSites.splice(index, 1);
this._neverTranslateSiteTree.tree.rowCountChanged(index, -1);
}
}
// Ensure the UI updates to the changes.
this.onSelectNeverTranslateSite();
} else if (aTopic === "nsPref:changed") {
switch (aData) {
case ALWAYS_TRANSLATE_LANGS_PREF: {
this._alwaysTranslateLangs = this.getAlwaysTranslateLanguages();
let alwaysTranslateLangsChange =
this._alwaysTranslateLangs.length -
this._alwaysTranslateLangsTree.rowCount;
this._alwaysTranslateLangsTree._data = this._alwaysTranslateLangs;
let alwaysTranslateLangsTree = this._alwaysTranslateLangsTree.tree;
if (alwaysTranslateLangsChange) {
alwaysTranslateLangsTree.rowCountChanged(
0,
alwaysTranslateLangsChange
);
}
alwaysTranslateLangsTree.invalidate();
// Ensure the UI updates to the changes.
this.onSelectAlwaysTranslateLanguage();
break;
}
case NEVER_TRANSLATE_LANGS_PREF: {
this._neverTranslateLangs = this.getNeverTranslateLanguages();
let neverTranslateLangsChange =
this._neverTranslateLangs.length -
this._neverTranslateLangsTree.rowCount;
this._neverTranslateLangsTree._data = this._neverTranslateLangs;
let neverTranslateLangsTree = this._neverTranslateLangsTree.tree;
if (neverTranslateLangsChange) {
neverTranslateLangsTree.rowCountChanged(
0,
neverTranslateLangsChange
);
}
neverTranslateLangsTree.invalidate();
// Ensure the UI updates to the changes.
this.onSelectNeverTranslateLanguage();
break;
}
}
}
},
/**
* Ensures that buttons states are enabled/disabled accordingly based on the
* content of the trees.
*
* The remove button should be enabled only if an item is selected.
* The removeAll button should be enabled any time the tree has content.
*
* @param {Tree} aTree
* @param {string} aIdPart
*/
_handleButtonDisabling(aTree, aIdPart) {
let empty = aTree.isEmpty;
document.getElementById("removeAll" + aIdPart + "s").disabled = empty;
document.getElementById("remove" + aIdPart).disabled =
empty || !aTree.hasSelection;
},
/**
* Updates the UI state for the always-translate languages section.
*/
onSelectAlwaysTranslateLanguage() {
this._handleButtonDisabling(
this._alwaysTranslateLangsTree,
"AlwaysTranslateLanguage"
);
},
/**
* Updates the UI state for the never-translate languages section.
*/
onSelectNeverTranslateLanguage() {
this._handleButtonDisabling(
this._neverTranslateLangsTree,
"NeverTranslateLanguage"
);
},
/**
* Updates the UI state for the never-translate sites section.
*/
onSelectNeverTranslateSite() {
this._handleButtonDisabling(
this._neverTranslateSiteTree,
"NeverTranslateSite"
);
},
/**
* Updates the value of a language pref to match when a language is removed
* through the UI.
*
* @param {string} pref
* @param {Tree} tree
*/
_onRemoveLanguage(pref, tree) {
let langs = Services.prefs.getCharPref(pref);
if (!langs) {
return;
}
let removed = tree.getSelectedItems().map(l => l.langCode);
langs = langs.split(",").filter(l => !removed.includes(l));
Services.prefs.setCharPref(pref, langs.join(","));
},
/**
* Updates the never-translate language pref when a never-translate language
* is removed via the UI.
*/
onRemoveAlwaysTranslateLanguage() {
this._onRemoveLanguage(
ALWAYS_TRANSLATE_LANGS_PREF,
this._alwaysTranslateLangsTree
);
},
/**
* Updates the always-translate language pref when a always-translate language
* is removed via the UI.
*/
onRemoveNeverTranslateLanguage() {
this._onRemoveLanguage(
NEVER_TRANSLATE_LANGS_PREF,
this._neverTranslateLangsTree
);
},
/**
* Updates the permissions for a never-translate site when it is removed via the UI.
*/
onRemoveNeverTranslateSite() {
let removedNeverTranslateSites =
this._neverTranslateSiteTree.getSelectedItems();
for (let origin of removedNeverTranslateSites) {
TranslationsParent.setNeverTranslateSiteByOrigin(false, origin);
}
},
/**
* Clears the always-translate languages pref when the list is cleared in the UI.
*/
onRemoveAllAlwaysTranslateLanguages() {
Services.prefs.setCharPref(ALWAYS_TRANSLATE_LANGS_PREF, "");
},
/**
* Clears the never-translate languages pref when the list is cleared in the UI.
*/
onRemoveAllNeverTranslateLanguages() {
Services.prefs.setCharPref(NEVER_TRANSLATE_LANGS_PREF, "");
},
/**
* Clears the never-translate sites pref when the list is cleared in the UI.
*/
onRemoveAllNeverTranslateSites() {
if (this._neverTranslateSiteTree.isEmpty) {
return;
}
let removedNeverTranslateSites = this._neverTranslateSites.splice(
0,
this._neverTranslateSites.length
);
this._neverTranslateSiteTree.tree.rowCountChanged(
0,
-removedNeverTranslateSites.length
);
for (let origin of removedNeverTranslateSites) {
TranslationsParent.setNeverTranslateSiteByOrigin(false, origin);
}
this.onSelectNeverTranslateSite();
},
/**
* Handles removing a selected always-translate language via the keyboard.
*/
onAlwaysTranslateLanguageKeyPress(aEvent) {
if (aEvent.keyCode == KeyEvent.DOM_VK_DELETE) {
this.onRemoveAlwaysTranslateLanguage();
}
},
/**
* Handles removing a selected never-translate language via the keyboard.
*/
onNeverTranslateLanguageKeyPress(aEvent) {
if (aEvent.keyCode == KeyEvent.DOM_VK_DELETE) {
this.onRemoveNeverTranslateLanguage();
}
},
/**
* Handles removing a selected never-translate site via the keyboard.
*/
onNeverTranslateSiteKeyPress(aEvent) {
if (aEvent.keyCode == KeyEvent.DOM_VK_DELETE) {
this.onRemoveNeverTranslateSite();
}
},
/**
* Removes any active preference and permissions observers.
*/
removeObservers() {
Services.obs.removeObserver(this, "perm-changed");
Services.prefs.removeObserver(ALWAYS_TRANSLATE_LANGS_PREF, this);
Services.prefs.removeObserver(NEVER_TRANSLATE_LANGS_PREF, this);
},
};