113 lines
4.2 KiB
JavaScript
113 lines
4.2 KiB
JavaScript
/*
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***** BEGIN LICENSE BLOCK *****
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Copyright © 2009 Center for History and New Media
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George Mason University, Fairfax, Virginia, USA
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http://zotero.org
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This file is part of Zotero.
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Zotero is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Zotero is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with Zotero. If not, see <http://www.gnu.org/licenses/>.
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***** END LICENSE BLOCK *****
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*/
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var Zotero_Charset_Menu = new function() {
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this.populate = populate;
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/**
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* Populate a character set menu, placing more commonly used character sets
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* closer to the top
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*
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* @param {DOMElement} charsetMenu The menu to populate
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* @param {Boolean} exportMenu Whether the menu is to be used for export
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**/
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function populate(charsetMenu, exportMenu) {
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var charsetMap = {};
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// get charset popup and charset RDF
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var charsetPopup = document.createElement("menupopup");
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charsetMenu.appendChild(charsetPopup);
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var charsetSeparator = document.createElement("menuseparator");
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charsetPopup.appendChild(charsetSeparator);
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var rdfService = Components.classes["@mozilla.org/rdf/rdf-service;1"].
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getService(Components.interfaces.nsIRDFService);
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var RDFCU = Components.classes["@mozilla.org/rdf/container-utils;1"].
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getService(Components.interfaces.nsIRDFContainerUtils);
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var rdfDataSource = rdfService.GetDataSource("rdf:charset-menu");
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var rdfName = rdfService.GetResource("http://home.netscape.com/NC-rdf#Name");
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var rdfContainer = Components.classes["@mozilla.org/rdf/container;1"].
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createInstance(Components.interfaces.nsIRDFContainer);
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rdfContainer.Init(rdfDataSource, rdfService.GetResource("NC:EncodersRoot"));
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var charsets = rdfContainer.GetElements();
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// add charsets to popup in order
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while(charsets.hasMoreElements()) {
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var charset = charsets.getNext().QueryInterface(Components.interfaces.nsIRDFResource);
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var label = rdfDataSource.GetTarget(charset, rdfName, true).
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QueryInterface(Components.interfaces.nsIRDFLiteral);
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charset = charset.Value;
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label = label.Value;
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var isUTF16 = charset.length >= 6 && charset.substr(0, 6) == "UTF-16";
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// Show UTF-16 element appropriately depending on exportMenu
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if(isUTF16 && exportMenu == (charset == "UTF-16") ||
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(!exportMenu && charset == "UTF-32LE")) {
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continue;
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} else if(charset == "x-mac-roman") {
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// use the IANA name
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charset = "macintosh";
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} else if(!exportMenu && charset == "UTF-32BE") {
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label = "Unicode (UTF-32)";
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charset = "UTF-32";
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}
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// add element
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var itemNode = document.createElement("menuitem");
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itemNode.setAttribute("label", label);
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itemNode.setAttribute("value", charset);
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charsetMap[charset] = itemNode;
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if(isUTF16 || (label.length > 7 &&
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label.substr(0, 7) == "Western")) {
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charsetPopup.insertBefore(itemNode, charsetSeparator);
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} else if(charset == "UTF-8") {
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var oldFirst = (charsetPopup.firstChild ? charsetPopup.firstChild : null);
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charsetPopup.insertBefore(itemNode, oldFirst);
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// also add (without BOM) if requested
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if(exportMenu) {
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var itemNode = document.createElement("menuitem");
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itemNode.setAttribute("label", Zotero.getString("charset.UTF8withoutBOM"));
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itemNode.setAttribute("value", charset+"xBOM");
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charsetMap[charset+"xBOM"] = itemNode;
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charsetPopup.insertBefore(itemNode, oldFirst);
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}
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} else {
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charsetPopup.appendChild(itemNode);
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}
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}
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if(!exportMenu) {
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var itemNode = document.createElement("menuitem");
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itemNode.setAttribute("label", Zotero.getString("charset.autoDetect"));
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itemNode.setAttribute("value", "auto");
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charsetMap["auto"] = itemNode;
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charsetPopup.insertBefore(itemNode, charsetPopup.firstChild);
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}
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return charsetMap;
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}
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} |