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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/. */
var EXPORTED_SYMBOLS = ["InlineSpellChecker", "SpellCheckHelper"];
const MAX_UNDO_STACK_DEPTH = 1;
const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
function InlineSpellChecker(aEditor) {
this.init(aEditor);
this.mAddedWordStack = []; // We init this here to preserve it between init/uninit calls
}
InlineSpellChecker.prototype = {
// Call this function to initialize for a given editor
init(aEditor) {
this.uninit();
this.mEditor = aEditor;
try {
this.mInlineSpellChecker = this.mEditor.getInlineSpellChecker(true);
// note: this might have been NULL if there is no chance we can spellcheck
} catch (e) {
this.mInlineSpellChecker = null;
}
},
initFromRemote(aSpellInfo, aWindowGlobalParent) {
if (this.mRemote) {
// We shouldn't get here, but let's just recover instead of bricking the
// menu by throwing exceptions:
Cu.reportError(new Error("Unexpected remote spellchecker present!"));
try {
this.mRemote.uninit();
} catch (ex) {
Cu.reportError(ex);
}
this.mRemote = null;
}
this.uninit();
if (!aSpellInfo) {
return;
}
this.mInlineSpellChecker = this.mRemote = new RemoteSpellChecker(
aSpellInfo,
aWindowGlobalParent
);
this.mOverMisspelling = aSpellInfo.overMisspelling;
this.mMisspelling = aSpellInfo.misspelling;
},
// call this to clear state
uninit() {
if (this.mRemote) {
this.mRemote.uninit();
this.mRemote = null;
}
this.mEditor = null;
this.mInlineSpellChecker = null;
this.mOverMisspelling = false;
this.mMisspelling = "";
this.mMenu = null;
this.mSuggestionItems = [];
this.mDictionaryMenu = null;
this.mDictionaryItems = [];
this.mWordNode = null;
},
// for each UI event, you must call this function, it will compute the
// word the cursor is over
initFromEvent(rangeParent, rangeOffset) {
this.mOverMisspelling = false;
if (!rangeParent || !this.mInlineSpellChecker) {
return;
}
var selcon = this.mEditor.selectionController;
var spellsel = selcon.getSelection(selcon.SELECTION_SPELLCHECK);
if (spellsel.rangeCount == 0) {
return;
} // easy case - no misspellings
var range = this.mInlineSpellChecker.getMisspelledWord(
rangeParent,
rangeOffset
);
if (!range) {
return;
} // not over a misspelled word
this.mMisspelling = range.toString();
this.mOverMisspelling = true;
this.mWordNode = rangeParent;
this.mWordOffset = rangeOffset;
},
// returns false if there should be no spellchecking UI enabled at all, true
// means that you can at least give the user the ability to turn it on.
get canSpellCheck() {
// inline spell checker objects will be created only if there are actual
// dictionaries available
if (this.mRemote) {
return this.mRemote.canSpellCheck;
}
return this.mInlineSpellChecker != null;
},
get initialSpellCheckPending() {
if (this.mRemote) {
return this.mRemote.spellCheckPending;
}
return !!(
this.mInlineSpellChecker &&
!this.mInlineSpellChecker.spellChecker &&
this.mInlineSpellChecker.spellCheckPending
);
},
// Whether spellchecking is enabled in the current box
get enabled() {
if (this.mRemote) {
return this.mRemote.enableRealTimeSpell;
}
return (
this.mInlineSpellChecker && this.mInlineSpellChecker.enableRealTimeSpell
);
},
set enabled(isEnabled) {
if (this.mRemote) {
this.mRemote.setSpellcheckUserOverride(isEnabled);
} else if (this.mInlineSpellChecker) {
this.mEditor.setSpellcheckUserOverride(isEnabled);
}
},
// returns true if the given event is over a misspelled word
get overMisspelling() {
return this.mOverMisspelling;
},
// this prepends up to "maxNumber" suggestions at the given menu position
// for the word under the cursor. Returns the number of suggestions inserted.
addSuggestionsToMenuOnParent(menu, insertBefore, maxNumber) {
if (this.mRemote) {
// This is used on parent process only.
// If you want to add suggestions to context menu, get suggestions then
// use addSuggestionsToMenu instead.
return 0;
}
if (!this.mInlineSpellChecker || !this.mOverMisspelling) {
return 0;
}
let spellchecker = this.mInlineSpellChecker.spellChecker;
let spellSuggestions = [];
try {
if (!spellchecker.CheckCurrentWord(this.mMisspelling)) {
return 0;
}
for (let i = 0; i < maxNumber; i++) {
let suggestion = spellchecker.GetSuggestedWord();
if (!suggestion.length) {
// no more data
break;
}
spellSuggestions.push(suggestion);
}
} catch (e) {
return 0;
}
return this._addSuggestionsToMenu(menu, insertBefore, spellSuggestions);
},
addSuggestionsToMenu(menu, insertBefore, spellSuggestions) {
if (
!this.mRemote &&
(!this.mInlineSpellChecker || !this.mOverMisspelling)
) {
return 0;
} // nothing to do
if (!spellSuggestions?.length) {
return 0;
}
return this._addSuggestionsToMenu(menu, insertBefore, spellSuggestions);
},
_addSuggestionsToMenu(menu, insertBefore, spellSuggestions) {
this.mMenu = menu;
this.mSuggestionItems = [];
for (let suggestion of spellSuggestions) {
var item = menu.ownerDocument.createXULElement("menuitem");
this.mSuggestionItems.push(item);
item.setAttribute("label", suggestion);
item.setAttribute("value", suggestion);
item.addEventListener(
"command",
this.replaceMisspelling.bind(this, suggestion),
true
);
item.setAttribute("class", "spell-suggestion");
menu.insertBefore(item, insertBefore);
}
return spellSuggestions.length;
},
// undoes the work of addSuggestionsToMenu for the same menu
// (call from popup hiding)
clearSuggestionsFromMenu() {
for (var i = 0; i < this.mSuggestionItems.length; i++) {
this.mMenu.removeChild(this.mSuggestionItems[i]);
}
this.mSuggestionItems = [];
},
sortDictionaryList(list) {
var sortedList = [];
var names = Services.intl.getLocaleDisplayNames(undefined, list);
for (var i = 0; i < list.length; i++) {
sortedList.push({ localeCode: list[i], displayName: names[i] });
}
let comparer = new Services.intl.Collator().compare;
sortedList.sort((a, b) => comparer(a.displayName, b.displayName));
return sortedList;
},
// returns the number of dictionary languages. If insertBefore is NULL, this
// does an append to the given menu
addDictionaryListToMenu(menu, insertBefore) {
this.mDictionaryMenu = menu;
this.mDictionaryItems = [];
if (!this.enabled) {
return 0;
}
var list;
var curlang = "";
if (this.mRemote) {
list = this.mRemote.dictionaryList;
curlang = this.mRemote.currentDictionary;
} else if (this.mInlineSpellChecker) {
var spellchecker = this.mInlineSpellChecker.spellChecker;
list = spellchecker.GetDictionaryList();
try {
curlang = spellchecker.GetCurrentDictionary();
} catch (e) {}
}
var sortedList = this.sortDictionaryList(list);
for (var i = 0; i < sortedList.length; i++) {
var item = menu.ownerDocument.createXULElement("menuitem");
item.setAttribute(
"id",
"spell-check-dictionary-" + sortedList[i].localeCode
);
// XXX: Once Fluent has dynamic references, we could also lazily
// inject regionNames/languageNames FTL and localize using
// `l10n-id` here.
item.setAttribute("label", sortedList[i].displayName);
item.setAttribute("type", "radio");
this.mDictionaryItems.push(item);
if (curlang == sortedList[i].localeCode) {
item.setAttribute("checked", "true");
} else {
var callback = function(me, localeCode) {
return function(evt) {
me.selectDictionary(localeCode);
// Notify change of dictionary, especially for Thunderbird,
// which is otherwise not notified any more.
var view = menu.ownerGlobal;
var spellcheckChangeEvent = new view.CustomEvent(
"spellcheck-changed",
{ detail: { dictionary: localeCode } }
);
menu.ownerDocument.dispatchEvent(spellcheckChangeEvent);
};
};
item.addEventListener(
"command",
callback(this, sortedList[i].localeCode),
true
);
}
if (insertBefore) {
menu.insertBefore(item, insertBefore);
} else {
menu.appendChild(item);
}
}
return list.length;
},
// undoes the work of addDictionaryListToMenu for the menu
// (call on popup hiding)
clearDictionaryListFromMenu() {
for (var i = 0; i < this.mDictionaryItems.length; i++) {
this.mDictionaryMenu.removeChild(this.mDictionaryItems[i]);
}
this.mDictionaryItems = [];
},
// callback for selecting a dictionary
selectDictionary(localeCode) {
if (this.mRemote) {
this.mRemote.selectDictionary(localeCode);
return;
}
if (!this.mInlineSpellChecker) {
return;
}
var spellchecker = this.mInlineSpellChecker.spellChecker;
spellchecker.SetCurrentDictionary(localeCode);
this.mInlineSpellChecker.spellCheckRange(null); // causes recheck
},
// callback for selecting a suggested replacement
replaceMisspelling(suggestion) {
if (this.mRemote) {
this.mRemote.replaceMisspelling(suggestion);
return;
}
if (!this.mInlineSpellChecker || !this.mOverMisspelling) {
return;
}
this.mInlineSpellChecker.replaceWord(
this.mWordNode,
this.mWordOffset,
suggestion
);
},
// callback for enabling or disabling spellchecking
toggleEnabled() {
if (this.mRemote) {
this.mRemote.toggleEnabled();
} else {
this.mEditor.setSpellcheckUserOverride(
!this.mInlineSpellChecker.enableRealTimeSpell
);
}
},
// callback for adding the current misspelling to the user-defined dictionary
addToDictionary() {
// Prevent the undo stack from growing over the max depth
if (this.mAddedWordStack.length == MAX_UNDO_STACK_DEPTH) {
this.mAddedWordStack.shift();
}
this.mAddedWordStack.push(this.mMisspelling);
if (this.mRemote) {
this.mRemote.addToDictionary();
} else {
this.mInlineSpellChecker.addWordToDictionary(this.mMisspelling);
}
},
// callback for removing the last added word to the dictionary LIFO fashion
undoAddToDictionary() {
if (this.mAddedWordStack.length) {
var word = this.mAddedWordStack.pop();
if (this.mRemote) {
this.mRemote.undoAddToDictionary(word);
} else {
this.mInlineSpellChecker.removeWordFromDictionary(word);
}
}
},
canUndo() {
// Return true if we have words on the stack
return !!this.mAddedWordStack.length;
},
ignoreWord() {
if (this.mRemote) {
this.mRemote.ignoreWord();
} else {
this.mInlineSpellChecker.ignoreWord(this.mMisspelling);
}
},
};
var SpellCheckHelper = {
// Set when over a non-read-only <textarea> or editable <input>
// (that allows text entry of some kind, so not e.g. <input type=checkbox>)
EDITABLE: 0x1,
// Set when over an <input> element of any type.
INPUT: 0x2,
// Set when over any <textarea>.
TEXTAREA: 0x4,
// Set when over any text-entry <input>.
TEXTINPUT: 0x8,
// Set when over an <input> that can be used as a keyword field.
KEYWORD: 0x10,
// Set when over an element that otherwise would not be considered
// "editable" but is because content editable is enabled for the document.
CONTENTEDITABLE: 0x20,
// Set when over an <input type="number"> or other non-text field.
NUMERIC: 0x40,
// Set when over an <input type="password"> field.
PASSWORD: 0x80,
// Set when spellcheckable. Replaces `EDITABLE`/`CONTENTEDITABLE` combination
// specifically for spellcheck.
SPELLCHECKABLE: 0x100,
isTargetAKeywordField(aNode, window) {
if (!(aNode instanceof window.HTMLInputElement)) {
return false;
}
var form = aNode.form;
if (!form || aNode.type == "password") {
return false;
}
var method = form.method.toUpperCase();
// These are the following types of forms we can create keywords for:
//
// method encoding type can create keyword
// GET * YES
// * YES
// POST YES
// POST application/x-www-form-urlencoded YES
// POST text/plain NO (a little tricky to do)
// POST multipart/form-data NO
// POST everything else YES
return (
method == "GET" ||
method == "" ||
(form.enctype != "text/plain" && form.enctype != "multipart/form-data")
);
},
// Returns the computed style attribute for the given element.
getComputedStyle(aElem, aProp) {
return aElem.ownerGlobal.getComputedStyle(aElem).getPropertyValue(aProp);
},
isEditable(element, window) {
var flags = 0;
if (element instanceof window.HTMLInputElement) {
flags |= this.INPUT;
if (element.mozIsTextField(false) || element.type == "number") {
flags |= this.TEXTINPUT;
if (!element.readOnly) {
flags |= this.EDITABLE;
}
if (element.type == "number") {
flags |= this.NUMERIC;
}
// Allow spellchecking UI on all text and search inputs.
if (
!element.readOnly &&
(element.type == "text" || element.type == "search")
) {
flags |= this.SPELLCHECKABLE;
}
if (this.isTargetAKeywordField(element, window)) {
flags |= this.KEYWORD;
}
if (element.type == "password") {
flags |= this.PASSWORD;
}
}
} else if (element instanceof window.HTMLTextAreaElement) {
flags |= this.TEXTINPUT | this.TEXTAREA;
if (!element.readOnly) {
flags |= this.SPELLCHECKABLE | this.EDITABLE;
}
}
if (!(flags & this.SPELLCHECKABLE)) {
var win = element.ownerGlobal;
if (win) {
var isSpellcheckable = false;
try {
var editingSession = win.docShell.editingSession;
if (
editingSession.windowIsEditable(win) &&
this.getComputedStyle(element, "-moz-user-modify") == "read-write"
) {
isSpellcheckable = true;
}
} catch (ex) {
// If someone built with composer disabled, we can't get an editing session.
}
if (isSpellcheckable) {
flags |= this.CONTENTEDITABLE | this.SPELLCHECKABLE;
}
}
}
return flags;
},
};
function RemoteSpellChecker(aSpellInfo, aWindowGlobalParent) {
this._spellInfo = aSpellInfo;
this._suggestionGenerator = null;
this._actor = aWindowGlobalParent.getActor("InlineSpellChecker");
this._actor.registerDestructionObserver(this);
}
RemoteSpellChecker.prototype = {
get canSpellCheck() {
return this._spellInfo.canSpellCheck;
},
get spellCheckPending() {
return this._spellInfo.initialSpellCheckPending;
},
get overMisspelling() {
return this._spellInfo.overMisspelling;
},
get enableRealTimeSpell() {
return this._spellInfo.enableRealTimeSpell;
},
get suggestions() {
return this._spellInfo.spellSuggestions;
},
get currentDictionary() {
return this._spellInfo.currentDictionary;
},
get dictionaryList() {
return this._spellInfo.dictionaryList.slice();
},
selectDictionary(localeCode) {
this._actor.selectDictionary({ localeCode });
},
replaceMisspelling(suggestion) {
this._actor.replaceMisspelling({ suggestion });
},
toggleEnabled() {
this._actor.toggleEnabled();
},
addToDictionary() {
// This is really ugly. There is an nsISpellChecker somewhere in the
// parent that corresponds to our current element's spell checker in the
// child, but it's hard to access it. However, we know that
// addToDictionary adds the word to the singleton personal dictionary, so
// we just do that here.
// NB: We also rely on the fact that we only ever pass an empty string in
// as the "lang".
let dictionary = Cc[
"@mozilla.org/spellchecker/personaldictionary;1"
].getService(Ci.mozIPersonalDictionary);
dictionary.addWord(this._spellInfo.misspelling);
this._actor.recheckSpelling();
},
undoAddToDictionary(word) {
let dictionary = Cc[
"@mozilla.org/spellchecker/personaldictionary;1"
].getService(Ci.mozIPersonalDictionary);
dictionary.removeWord(word);
this._actor.recheckSpelling();
},
ignoreWord() {
let dictionary = Cc[
"@mozilla.org/spellchecker/personaldictionary;1"
].getService(Ci.mozIPersonalDictionary);
dictionary.ignoreWord(this._spellInfo.misspelling);
this._actor.recheckSpelling();
},
uninit() {
if (this._actor) {
this._actor.uninit();
this._actor.unregisterDestructionObserver(this);
}
},
actorDestroyed() {
// The actor lets us know if it gets destroyed, so we don't
// later try to call `.uninit()` on it.
this._actor = null;
},
};