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412 lines
14 KiB
JavaScript
412 lines
14 KiB
JavaScript
# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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# ***** 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 the Firefox Preferences System.
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#
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# The Initial Developer of the Original Code is
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# Jeff Walden <jwalden+code@mit.edu>.
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# Portions created by the Initial Developer are Copyright (C) 2006
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Asaf Romano <mozilla.mano@sent.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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#ifndef XP_MACOSX
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var Cc = Components.classes;
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var Ci = Components.interfaces;
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var Cr = Components.results;
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var TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
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const kXULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
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#endif
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/*
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* Preferences:
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*
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* browser.feeds.handler
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* - "bookmarks", "reader" (clarified further using the .default preference),
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* or "ask" -- indicates the default handler being used to process feeds
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*
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* browser.feeds.handler.default
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* - "bookmarks", "client" or "web" -- indicates the chosen feed reader used
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* to display feeds, either transiently (i.e., when the "use as default"
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* checkbox is unchecked, corresponds to when browser.feeds.handler=="ask")
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* or more permanently (i.e., the item displayed in the dropdown in Feeds
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* preferences)
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*
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* browser.feeds.handler.webservice
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* - the URL of the currently selected web service used to read feeds
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*
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* browser.feeds.handlers.application
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* - nsILocalFile, stores the current client-side feed reading app if one has
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* been chosen
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*/
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const PREF_SELECTED_APP = "browser.feeds.handlers.application";
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const PREF_SELECTED_WEB = "browser.feeds.handlers.webservice";
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const PREF_SELECTED_ACTION = "browser.feeds.handler";
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const PREF_SELECTED_READER = "browser.feeds.handler.default";
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var gFeedsPane = {
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element: function(aID) {
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return document.getElementById(aID);
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},
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/* ........ QueryInterface .............. */
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QueryInterface: function(aIID) {
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if (aIID.equals(Ci.nsISupports) ||
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aIID.equals(Ci.nsIObserver) ||
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aIID.equals(Ci.nsIDOMEventListener))
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return this;
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throw Cr.NS_ERROR_NO_INTERFACE;
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},
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/**
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* See nsIObserver
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*/
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observe: function(aSubject, aTopic, aData) {
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if (aTopic != "nsPref:changed" || aData != PREF_SELECTED_WEB)
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return;
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if (this.element(PREF_SELECTED_ACTION).value == "reader") {
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var wccr =
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Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
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getService(Ci.nsIWebContentConverterService);
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var handlerURL = this.element(PREF_SELECTED_WEB).valueFromPreferences;
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var handler =
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wccr.getWebContentHandlerByURI(TYPE_MAYBE_FEED, handlerURL);
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if (handler)
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wccr.setAutoHandler(TYPE_MAYBE_FEED, handler);
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}
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},
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/**
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* See nsIDOMEventListener
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*/
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handleEvent: function(aEvent) {
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if (aEvent.type == "unload") {
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var prefBranch = Cc["@mozilla.org/preferences-service;1"].
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getService(Ci.nsIPrefBranch2);
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prefBranch.removeObserver(PREF_SELECTED_WEB, this);
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window.removeEventListener("unload", this, false);
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}
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},
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/**
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* Initializes this.
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*/
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init: function () {
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var _delayedPaneLoad = function(self) {
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self._initFeedReaders();
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self.updateSelectedReader();
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}
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setTimeout(_delayedPaneLoad, 0, this);
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// For web readers, we need to call setAutoHandler if the
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// preview page should be skipped (i.e. PREF_SELECTED_ACTION="reader")
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// To do so, we've to add a pref-observer in order to be notified on
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// actual pref-changes (i.e. not on pref changes which may not take
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// affect when the prefwindow is closed)
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var prefBranch = Cc["@mozilla.org/preferences-service;1"].
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getService(Ci.nsIPrefBranch2);
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prefBranch.addObserver(PREF_SELECTED_WEB, this, false);
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window.addEventListener("unload", this, false);
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},
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#ifdef XP_WIN
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/**
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* Returns the system default feed reader as a nsILocalFile object if any,
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* null otherwise.
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*/
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_getSystemDefaultReader: function() {
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var defaultReader;
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try {
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const WRK = Ci.nsIWindowsRegKey;
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var regKey =
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Cc["@mozilla.org/windows-registry-key;1"].createInstance(WRK);
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regKey.open(WRK.ROOT_KEY_CLASSES_ROOT,
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"feed\\shell\\open\\command", WRK.ACCESS_READ);
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var path = regKey.readStringValue("");
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if (path.charAt(0) == "\"") {
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// Everything inside the quotes
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path = path.substr(1);
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path = path.substr(0, path.indexOf("\""));
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}
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else {
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// Everything up to the first space
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path = path.substr(0, path.indexOf(" "));
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}
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defaultReader = Cc["@mozilla.org/file/local;1"].
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createInstance(Ci.nsILocalFile);
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defaultReader.initWithPath(path);
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return defaultReader;
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}
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catch (ex) { }
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return null;
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},
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#endif
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/**
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* Populates the UI list of available feed readers.
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*/
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_initFeedReaders: function() {
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this.updateSelectedApplicationInfo();
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var readersList = this.element("readers");
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#ifdef XP_WIN
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// On Windows, list the system default feed reader if it is
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// not the last-selected application already
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try {
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var systemDefaultReader = this._getSystemDefaultReader();
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if (systemDefaultReader) {
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var defaultSystemReaderFilefield = this.element("defaultSystemReaderFilefield");
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defaultSystemReaderFilefield.file = systemDefaultReader;
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var selectedAppFile = this.element("selectedAppFilefield").file;
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if (!selectedAppFile || defaultSystemReaderFilefield.file.path !=
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selectedAppFile.path) {
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var defaultReaderItem = document.createElementNS(kXULNS, "listitem");
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defaultReaderItem.id = "defaultSystemReaderListitem";
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defaultReaderItem.className = "listitem-iconic";
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defaultReaderItem.setAttribute("label", defaultSystemReaderFilefield.label);
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defaultReaderItem.setAttribute("image", defaultSystemReaderFilefield.image);
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readersList.appendChild(defaultReaderItem);
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}
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}
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}
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catch(ex) { }
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#endif
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// List of web handlers
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var wccr =
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Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
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getService(Ci.nsIWebContentConverterService);
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var handlers = wccr.getContentHandlers(TYPE_MAYBE_FEED, {});
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if (handlers.length == 0)
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return;
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var ios =
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Cc["@mozilla.org/network/io-service;1"].
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getService(Ci.nsIIOService);
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for (var i = 0; i < handlers.length; ++i) {
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var row = document.createElementNS(kXULNS, "listitem");
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row.className = "listitem-iconic";
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row.setAttribute("label", handlers[i].name);
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row.setAttribute("webhandlerurl", handlers[i].uri);
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var uri = ios.newURI(handlers[i].uri, null, null);
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if (/^https?/.test(uri.scheme))
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row.setAttribute("image", uri.prePath + "/favicon.ico");
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readersList.appendChild(row);
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}
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},
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/**
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* Updates the label and image of the client feed reader listitem
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*/
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updateSelectedApplicationInfo: function() {
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var appItemCell = this.element("selectedApplicationCell");
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var selectedAppFilefield = this.element("selectedAppFilefield");
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selectedAppFilefield.file = this.element(PREF_SELECTED_APP).value;
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if (selectedAppFilefield.file) {
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appItemCell.setAttribute("label", selectedAppFilefield.label);
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appItemCell.setAttribute("image", selectedAppFilefield.image);
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}
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else {
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var noAppString =
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this.element("stringbundle").getString("noApplicationSelected");
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appItemCell.setAttribute("label", noAppString);
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appItemCell.setAttribute("image", "");
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}
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},
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/**
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* Selects a item in the list without triggering a preference change.
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*
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* @param aItem
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* the listitem to be selected
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*/
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_silentSelectReader: function(aItem) {
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var readers = this.element("readers");
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readers.setAttribute("suppressonselect", "true");
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readers.selectItem(aItem);
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readers.removeAttribute("suppressonselect");
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},
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/**
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* Helper for updateSelectedReader. Syncs the selected item in the readers
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* list with value stored invalues stored in PREF_SELECTED_WEB
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*/
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_updateSelectedWebHandlerItem: function() {
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// We should select the new web handler only if the default handler
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// is "web"
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var readers = this.element("readers")
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var readerElts =
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readers.getElementsByAttribute("webhandlerurl",
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this.element(PREF_SELECTED_WEB).value);
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// XXXmano: handle the addition of a new web handler
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if (readerElts.length > 0)
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this._silentSelectReader(readerElts[0]);
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},
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/**
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* Syncs the selected item in the readers list with the values stored in
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* preferences.
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*/
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updateSelectedReader: function() {
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var defaultReader = this.element(PREF_SELECTED_READER).value ||
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"bookmarks";
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switch (defaultReader) {
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case "bookmarks":
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this._silentSelectReader(this.element("liveBookmarksListItem"));
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break;
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case "client":
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#ifdef XP_WIN
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// Keep the system default feed reader item selected if the
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// last-selected application is the the system default feed reader
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// and if it is already selected
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var currentItem = this.element("readers").currentItem;
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if (currentItem && currentItem.id == "defaultSystemReaderListitem") {
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var defaultSystemReaderFile = this.element("defaultSystemReaderFilefield").file;
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var selectedAppFile = this.element("selectedAppFilefield").file;
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if (selectedAppFile && defaultSystemReaderFile &&
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defaultSystemReaderFile.path == selectedAppFile.path)
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break;
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}
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#endif
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this._silentSelectReader(this.element("selectedApplicationListitem"));
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break;
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case "web":
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this._updateSelectedWebHandlerItem();
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break;
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}
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},
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/**
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* Displays a prompt from which the user may choose an a (client) feed reader.
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*/
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chooseClientApp: function () {
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var fp = Cc["@mozilla.org/filepicker;1"]
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.createInstance(Ci.nsIFilePicker);
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fp.init(window, document.title, Ci.nsIFilePicker.modeOpen);
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fp.appendFilters(Ci.nsIFilePicker.filterApps);
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if (fp.show() == Ci.nsIFilePicker.returnOK && fp.file) {
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// XXXben - we need to compare this with the running instance executable
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// just don't know how to do that via script...
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if (fp.file.leafName == "firefox.exe")
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return;
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this.element(PREF_SELECTED_APP).value = fp.file;
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this.element(PREF_SELECTED_READER).value = "client";
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}
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},
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/**
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* Disables the readers list if "Show preview..." is selected, enables
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* it otherwise.
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*/
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onReadingMethodSelect: function() {
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var disableList = this.element("readingMethod").value == "ask";
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this.element("readers").disabled = disableList;
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this.element("chooseClientApp").disabled = disableList;
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},
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/**
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* Maps the value of PREF_SELECTED_ACTION to the parallel
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* value in the radiogroup
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*/
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onReadingMethodSyncFromPreference: function() {
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var pref = this.element(PREF_SELECTED_ACTION);
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var newVal = pref.instantApply ? pref.valueFromPreferences : pref.value;
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if (newVal != "ask")
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return "reader";
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return "ask";
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},
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/**
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* Returns the value to be used for PREF_SELECTED_ACTION
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* according to the current UI state.
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*/
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onReadingMethodSyncToPreference: function() {
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var readers = this.element("readers");
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// A reader must be choosed in order to skip the preview page
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if (this.element("readingMethod").value == "ask" ||
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!readers.currentItem)
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return "ask";
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if (readers.currentItem.id == "liveBookmarksListItem")
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return "bookmarks";
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return "reader";
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},
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/**
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* Syncs PREF_SELECTED_READER with the selected item in the readers list
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* Also updates PREF_SELECTED_ACTION if necessary
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*/
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writeSelectedFeedReader: function() {
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// Force update of the action pref. This is needed for the case in which
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// the user flipped from a reader to live bookmarks or vice-versa
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this.element(PREF_SELECTED_ACTION).value =
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this.onReadingMethodSyncToPreference();
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var currentItem = this.element("readers").currentItem;
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if (currentItem.hasAttribute("webhandlerurl")) {
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this.element(PREF_SELECTED_WEB).value =
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currentItem.getAttribute("webhandlerurl");
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this.element(PREF_SELECTED_READER).value = "web";
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}
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else {
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switch (currentItem.id) {
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case "liveBookmarksListItem":
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this.element(PREF_SELECTED_READER).value = "bookmarks";
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break;
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case "selectedApplicationListitem":
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// PREF_SELECTED_APP is saved in chooseClientApp
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this.element(PREF_SELECTED_READER).value = "client";
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break;
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#ifdef XP_WIN
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case "defaultSystemReaderListitem":
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this.element(PREF_SELECTED_APP).value = this.element("defaultSystemReaderFilefield").file;
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this.element(PREF_SELECTED_READER).value = "client";
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break;
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#endif
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}
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}
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}
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};
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