зеркало из https://github.com/mozilla/gecko-dev.git
316 строки
11 KiB
JavaScript
316 строки
11 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Inline spellcheck code
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*
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* The Initial Developer of the Original Code is
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* Google Inc.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brett Wilson <brettw@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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var EXPORTED_SYMBOLS = [ "InlineSpellChecker" ];
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var gLanguageBundle;
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var gRegionBundle;
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const MAX_UNDO_STACK_DEPTH = 1;
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function InlineSpellChecker(aEditor) {
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this.init(aEditor);
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this.mAddedWordStack = []; // We init this here to preserve it between init/uninit calls
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}
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InlineSpellChecker.prototype = {
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// Call this function to initialize for a given editor
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init: function(aEditor)
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{
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this.uninit();
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this.mEditor = aEditor;
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try {
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this.mInlineSpellChecker = this.mEditor.getInlineSpellChecker(true);
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// note: this might have been NULL if there is no chance we can spellcheck
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} catch(e) {
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this.mInlineSpellChecker = null;
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}
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},
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// call this to clear state
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uninit: function()
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{
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this.mEditor = null;
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this.mInlineSpellChecker = null;
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this.mOverMisspelling = false;
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this.mMisspelling = "";
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this.mMenu = null;
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this.mSpellSuggestions = [];
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this.mSuggestionItems = [];
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this.mDictionaryMenu = null;
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this.mDictionaryNames = [];
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this.mDictionaryItems = [];
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this.mWordNode = null;
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},
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// for each UI event, you must call this function, it will compute the
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// word the cursor is over
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initFromEvent: function(rangeParent, rangeOffset)
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{
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this.mOverMisspelling = false;
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if (!rangeParent || !this.mInlineSpellChecker)
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return;
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var selcon = this.mEditor.selectionController;
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var spellsel = selcon.getSelection(selcon.SELECTION_SPELLCHECK);
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if (spellsel.rangeCount == 0)
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return; // easy case - no misspellings
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var range = this.mInlineSpellChecker.getMisspelledWord(rangeParent,
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rangeOffset);
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if (! range)
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return; // not over a misspelled word
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this.mMisspelling = range.toString();
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this.mOverMisspelling = true;
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this.mWordNode = rangeParent;
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this.mWordOffset = rangeOffset;
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},
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// returns false if there should be no spellchecking UI enabled at all, true
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// means that you can at least give the user the ability to turn it on.
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get canSpellCheck()
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{
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// inline spell checker objects will be created only if there are actual
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// dictionaries available
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return (this.mInlineSpellChecker != null);
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},
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// Whether spellchecking is enabled in the current box
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get enabled()
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{
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return (this.mInlineSpellChecker &&
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this.mInlineSpellChecker.enableRealTimeSpell);
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},
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set enabled(isEnabled)
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{
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if (this.mInlineSpellChecker)
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this.mEditor.setSpellcheckUserOverride(isEnabled);
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},
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// returns true if the given event is over a misspelled word
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get overMisspelling()
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{
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return this.mOverMisspelling;
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},
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// this prepends up to "maxNumber" suggestions at the given menu position
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// for the word under the cursor. Returns the number of suggestions inserted.
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addSuggestionsToMenu: function(menu, insertBefore, maxNumber)
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{
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if (! this.mInlineSpellChecker || ! this.mOverMisspelling)
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return 0; // nothing to do
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var spellchecker = this.mInlineSpellChecker.spellChecker;
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try {
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if (! spellchecker.CheckCurrentWord(this.mMisspelling))
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return 0; // word seems not misspelled after all (?)
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} catch(e) {
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return 0;
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}
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this.mMenu = menu;
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this.mSpellSuggestions = [];
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this.mSuggestionItems = [];
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for (var i = 0; i < maxNumber; i ++) {
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var suggestion = spellchecker.GetSuggestedWord();
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if (! suggestion.length)
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break;
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this.mSpellSuggestions.push(suggestion);
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var item = menu.ownerDocument.createElement("menuitem");
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this.mSuggestionItems.push(item);
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item.setAttribute("label", suggestion);
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item.setAttribute("value", suggestion);
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// this function thing is necessary to generate a callback with the
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// correct binding of "val" (the index in this loop).
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var callback = function(me, val) { return function(evt) { me.replaceMisspelling(val); } };
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item.addEventListener("command", callback(this, i), true);
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item.setAttribute("class", "spell-suggestion");
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menu.insertBefore(item, insertBefore);
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}
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return this.mSpellSuggestions.length;
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},
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// undoes the work of addSuggestionsToMenu for the same menu
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// (call from popup hiding)
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clearSuggestionsFromMenu: function()
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{
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for (var i = 0; i < this.mSuggestionItems.length; i ++) {
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this.mMenu.removeChild(this.mSuggestionItems[i]);
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}
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this.mSuggestionItems = [];
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},
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// returns the number of dictionary languages. If insertBefore is NULL, this
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// does an append to the given menu
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addDictionaryListToMenu: function(menu, insertBefore)
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{
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this.mDictionaryMenu = menu;
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this.mDictionaryNames = [];
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this.mDictionaryItems = [];
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if (! gLanguageBundle) {
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// create the bundles for language and region
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var bundleService = Components.classes["@mozilla.org/intl/stringbundle;1"]
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.getService(Components.interfaces.nsIStringBundleService);
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gLanguageBundle = bundleService.createBundle(
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"chrome://global/locale/languageNames.properties");
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gRegionBundle = bundleService.createBundle(
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"chrome://global/locale/regionNames.properties");
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}
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if (! this.mInlineSpellChecker || ! this.enabled)
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return 0;
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var spellchecker = this.mInlineSpellChecker.spellChecker;
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var o1 = {}, o2 = {};
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spellchecker.GetDictionaryList(o1, o2);
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var list = o1.value;
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var listcount = o2.value;
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var curlang = "";
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try {
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curlang = spellchecker.GetCurrentDictionary();
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} catch(e) {}
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var isoStrArray;
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for (var i = 0; i < list.length; i ++) {
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// get the display name for this dictionary
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isoStrArray = list[i].split(/[-_]/);
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var displayName = "";
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if (gLanguageBundle && isoStrArray[0]) {
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try {
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displayName = gLanguageBundle.GetStringFromName(isoStrArray[0].toLowerCase());
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} catch(e) {} // ignore language bundle errors
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if (gRegionBundle && isoStrArray[1]) {
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try {
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displayName += " / " + gRegionBundle.GetStringFromName(isoStrArray[1].toLowerCase());
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} catch(e) {} // ignore region bundle errors
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if (isoStrArray[2])
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displayName += " (" + isoStrArray[2] + ")";
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}
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}
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// if we didn't get a name, just use the raw dictionary name
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if (displayName.length == 0)
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displayName = list[i];
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this.mDictionaryNames.push(list[i]);
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var item = menu.ownerDocument.createElement("menuitem");
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item.setAttribute("id", "spell-check-dictionary-" + list[i]);
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item.setAttribute("label", displayName);
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item.setAttribute("type", "radio");
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this.mDictionaryItems.push(item);
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if (curlang == list[i]) {
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item.setAttribute("checked", "true");
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} else {
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var callback = function(me, val) { return function(evt) { me.selectDictionary(val); } };
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item.addEventListener("command", callback(this, i), true);
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}
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if (insertBefore)
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menu.insertBefore(item, insertBefore);
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else
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menu.appendChild(item);
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}
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return list.length;
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},
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// undoes the work of addDictionaryListToMenu for the menu
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// (call on popup hiding)
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clearDictionaryListFromMenu: function()
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{
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for (var i = 0; i < this.mDictionaryItems.length; i ++) {
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this.mDictionaryMenu.removeChild(this.mDictionaryItems[i]);
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}
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this.mDictionaryItems = [];
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},
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// callback for selecting a dictionary
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selectDictionary: function(index)
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{
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if (! this.mInlineSpellChecker || index < 0 || index >= this.mDictionaryNames.length)
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return;
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var spellchecker = this.mInlineSpellChecker.spellChecker;
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spellchecker.SetCurrentDictionary(this.mDictionaryNames[index]);
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this.mInlineSpellChecker.spellCheckRange(null); // causes recheck
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},
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// callback for selecting a suggesteed replacement
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replaceMisspelling: function(index)
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{
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if (! this.mInlineSpellChecker || ! this.mOverMisspelling)
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return;
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if (index < 0 || index >= this.mSpellSuggestions.length)
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return;
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this.mInlineSpellChecker.replaceWord(this.mWordNode, this.mWordOffset,
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this.mSpellSuggestions[index]);
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},
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// callback for enabling or disabling spellchecking
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toggleEnabled: function()
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{
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this.mEditor.setSpellcheckUserOverride(!this.mInlineSpellChecker.enableRealTimeSpell);
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},
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// callback for adding the current misspelling to the user-defined dictionary
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addToDictionary: function()
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{
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// Prevent the undo stack from growing over the max depth
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if (this.mAddedWordStack.length == MAX_UNDO_STACK_DEPTH)
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this.mAddedWordStack.shift();
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this.mAddedWordStack.push(this.mMisspelling);
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this.mInlineSpellChecker.addWordToDictionary(this.mMisspelling);
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},
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// callback for removing the last added word to the dictionary LIFO fashion
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undoAddToDictionary: function()
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{
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if (this.mAddedWordStack.length > 0)
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{
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var word = this.mAddedWordStack.pop();
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this.mInlineSpellChecker.removeWordFromDictionary(word);
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}
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},
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canUndo : function()
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{
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// Return true if we have words on the stack
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return (this.mAddedWordStack.length > 0);
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},
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ignoreWord: function()
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{
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this.mInlineSpellChecker.ignoreWord(this.mMisspelling);
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}
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};
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