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Diffstat (limited to 'comm/suite/components/feeds/WebContentConverter.js')
| -rw-r--r-- | comm/suite/components/feeds/WebContentConverter.js | 818 |
1 files changed, 818 insertions, 0 deletions
diff --git a/comm/suite/components/feeds/WebContentConverter.js b/comm/suite/components/feeds/WebContentConverter.js new file mode 100644 index 0000000000..ef519c7df2 --- /dev/null +++ b/comm/suite/components/feeds/WebContentConverter.js @@ -0,0 +1,818 @@ +/* -*- Mode: Javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm"); +var {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm"); + +const WCCR_CONTRACTID = "@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"; +const WCCR_CLASSID = Components.ID("{792a7e82-06a0-437c-af63-b2d12e808acc}"); + +const WCC_CLASSID = Components.ID("{db7ebf28-cc40-415f-8a51-1b111851df1e}"); +const WCC_CLASSNAME = "Web Service Handler"; + +const TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed"; +const TYPE_ANY = "*/*"; + +const PREF_CONTENTHANDLERS_AUTO = "browser.contentHandlers.auto."; +const PREF_CONTENTHANDLERS_BRANCH = "browser.contentHandlers.types."; +const PREF_SELECTED_WEB = "browser.feeds.handlers.webservice"; +const PREF_SELECTED_ACTION = "browser.feeds.handler"; +const PREF_SELECTED_READER = "browser.feeds.handler.default"; +const PREF_HANDLER_EXTERNAL_PREFIX = "network.protocol-handler.external"; +const PREF_ALLOW_DIFFERENT_HOST = "gecko.handlerService.allowRegisterFromDifferentHost"; + +const STRING_BUNDLE_URI = "chrome://communicator/locale/feeds/subscribe.properties"; + +const NS_ERROR_MODULE_DOM = 0x80530000; +const NS_ERROR_DOM_SYNTAX_ERR = NS_ERROR_MODULE_DOM + 12; + +function LOG(str) { + try { + if (Services.prefs.getBoolPref("feeds.log")) + dump("*** Feeds: " + str + "\n"); + } + catch (ex) { + } +} + +function getNotificationBox(aWindow) +{ + return aWindow.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIWebNavigation) + .QueryInterface(Ci.nsIDocShell) + .chromeEventHandler.parentNode.wrappedJSObject; +} + +function WebContentConverter() { +} + +WebContentConverter.prototype = { + convert: function convert() { }, + asyncConvertData: function asyncConvertData() { }, + onDataAvailable: function onDataAvailable() { }, + onStopRequest: function onStopRequest() { }, + + onStartRequest: function onStartRequest(request, context) { + var wccr = Cc[WCCR_CONTRACTID] + .getService(Ci.nsIWebContentConverterService); + wccr.loadPreferredHandler(request); + }, + + QueryInterface: XPCOMUtils.generateQI( + [Ci.nsIStreamConverter, + Ci.nsIStreamListener]) +}; + +var WebContentConverterFactory = { + createInstance: function createInstance(outer, iid) { + if (outer != null) + throw Cr.NS_ERROR_NO_AGGREGATION; + return new WebContentConverter().QueryInterface(iid); + }, + + QueryInterface: XPCOMUtils.generateQI( + [Ci.nsIFactory]) +}; + +function ServiceInfo(contentType, uri, name) { + this._contentType = contentType; + this._uri = uri; + this._name = name; +} + +ServiceInfo.prototype = { + /** + * See nsIHandlerApp + */ + get name() { + return this._name; + }, + + /** + * See nsIHandlerApp + */ + equals: function equals(aHandlerApp) { + if (!aHandlerApp) + throw Cr.NS_ERROR_NULL_POINTER; + + if (aHandlerApp instanceof Ci.nsIWebContentHandlerInfo && + aHandlerApp.contentType == this.contentType && + aHandlerApp.uri == this.uri) + return true; + + return false; + }, + + /** + * See nsIWebContentHandlerInfo + */ + get contentType() { + return this._contentType; + }, + + /** + * See nsIWebContentHandlerInfo + */ + get uri() { + return this._uri; + }, + + /** + * See nsIWebContentHandlerInfo + */ + getHandlerURI: function getHandlerURI(uri) { + return this._uri.replace(/%s/gi, encodeURIComponent(uri)); + }, + + QueryInterface: XPCOMUtils.generateQI( + [Ci.nsIWebContentHandlerInfo]) +}; + +function WebContentConverterRegistrar() { + this._contentTypes = { }; + this._autoHandleContentTypes = { }; +} + +WebContentConverterRegistrar.prototype = { + __bundle: null, + get _bundle() { + if (!this.__bundle) { + this.__bundle = Services.strings.createBundle(STRING_BUNDLE_URI); + } + return this.__bundle; + }, + + _getFormattedString: function getFormattedString(key, params) { + return this._bundle.formatStringFromName(key, params, params.length); + }, + + _getString: function getString(key) { + try { + return this._bundle.GetStringFromName(key); + } catch(e) { + LOG("Couldn't retrieve key from bundle"); + } + + return null; + }, + + /** + * See nsIWebContentConverterService + */ + getAutoHandler: function getAutoHandler(contentType) { + contentType = this._resolveContentType(contentType); + if (contentType in this._autoHandleContentTypes) + return this._autoHandleContentTypes[contentType]; + return null; + }, + + /** + * See nsIWebContentConverterService + */ + setAutoHandler: function setAutoHandler(contentType, handler) { + if (handler && !this._typeIsRegistered(contentType, handler.uri)) + throw Cr.NS_ERROR_NOT_AVAILABLE; + + contentType = this._resolveContentType(contentType); + this._setAutoHandler(contentType, handler); + + var autoBranch = Services.prefs.getBranch(PREF_CONTENTHANDLERS_AUTO); + if (handler) + autoBranch.setCharPref(contentType, handler.uri); + else if (autoBranch.prefHasUserValue(contentType)) + autoBranch.clearUserPref(contentType); + + Services.prefs.savePrefFile(null); + }, + + /** + * Update the internal data structure (not persistent) + */ + _setAutoHandler: function setAutoHandler(contentType, handler) { + if (handler) + this._autoHandleContentTypes[contentType] = handler; + else if (contentType in this._autoHandleContentTypes) + delete this._autoHandleContentTypes[contentType]; + }, + + /** + * See nsIWebContentConverterService + */ + getWebContentHandlerByURI: function getWebContentHandlerByURI(contentType, uri) { + var handlers = this.getContentHandlers(contentType, { }); + for (let i = 0; i < handlers.length; ++i) { + if (handlers[i].uri == uri) + return handlers[i]; + } + return null; + }, + + /** + * See nsIWebContentConverterService + */ + loadPreferredHandler: function loadPreferredHandler(request) { + var channel = request.QueryInterface(Ci.nsIChannel); + var contentType = this._resolveContentType(channel.contentType); + var handler = this.getAutoHandler(contentType); + if (handler) { + request.cancel(Cr.NS_ERROR_FAILURE); + + let triggeringPrincipal = channel.loadInfo + ? channel.loadInfo.triggeringPrincipal + : Services.scriptSecurityManager.getSystemPrincipal(); + + let webNavigation = channel.notificationCallbacks + .getInterface(Ci.nsIWebNavigation); + webNavigation.loadURI(handler.getHandlerURI(channel.URI.spec), + Ci.nsIWebNavigation.LOAD_FLAGS_NONE, + null, null, null, triggeringPrincipal); + } + }, + + /** + * See nsIWebContentConverterService + */ + removeProtocolHandler: function removeProtocolHandler(aProtocol, aURITemplate) { + var eps = Cc["@mozilla.org/uriloader/external-protocol-service;1"] + .getService(Ci.nsIExternalProtocolService); + var handlerInfo = eps.getProtocolHandlerInfo(aProtocol); + var handlers = handlerInfo.possibleApplicationHandlers; + for (let i = 0; i < handlers.length; i++) { + try { // We only want to test web handlers + let handler = handlers.queryElementAt(i, Ci.nsIWebHandlerApp); + if (handler.uriTemplate == aURITemplate) { + handlers.removeElementAt(i); + let hs = Cc["@mozilla.org/uriloader/handler-service;1"] + .getService(Ci.nsIHandlerService); + hs.store(handlerInfo); + return; + } + } catch (e) { + /* it wasn't a web handler */ + } + } + }, + + /** + * See nsIWebContentConverterService + */ + removeContentHandler: function removeContentHandler(contentType, uri) { + function notURI(serviceInfo) { + return serviceInfo.uri != uri; + } + + if (contentType in this._contentTypes) { + this._contentTypes[contentType] = this._contentTypes[contentType] + .filter(notURI); + } + }, + + /** + * + */ + _mappings: { + "application/rss+xml": TYPE_MAYBE_FEED, + "application/atom+xml": TYPE_MAYBE_FEED, + }, + + /** + * These are types for which there is a separate content converter aside + * from our built in generic one. We should not automatically register + * a factory for creating a converter for these types. + */ + _blockedTypes: { + "application/vnd.mozilla.maybe.feed": true, + }, + + /** + * Determines the "internal" content type based on the _mappings. + * @param contentType + * @returns The resolved contentType value. + */ + _resolveContentType: function resolveContentType(contentType) { + if (contentType in this._mappings) + return this._mappings[contentType]; + return contentType; + }, + + _makeURI: function(aURL, aOriginCharset, aBaseURI) { + return Services.io.newURI(aURL, aOriginCharset, aBaseURI); + }, + + _checkAndGetURI: function checkAndGetURI(aURIString, aContentWindow) { + try { + var uri = this._makeURI(aURIString); + } catch (ex) { + // not supposed to throw according to spec + return; + } + + // For security reasons we reject non-http(s) urls (see bug 354316), + // we may need to revise this once we support more content types + // XXX this should be a "security exception" according to spec, but that + // isn't defined yet. + if (uri.scheme != "http" && uri.scheme != "https") + throw("Permission denied to add " + uri.spec + " as a content or protocol handler"); + + // We also reject handlers registered from a different host (see bug 402287) + // The pref allows us to test the feature + if ((!Services.prefs.prefHasUserValue(PREF_ALLOW_DIFFERENT_HOST) || + !Services.prefs.getBoolPref(PREF_ALLOW_DIFFERENT_HOST)) && + aContentWindow.location.hostname != uri.host) + throw("Permission denied to add " + uri.spec + " as a content or protocol handler"); + + // If the uri doesn't contain '%s', it won't be a good handler + if (!uri.spec.includes("%s")) + throw NS_ERROR_DOM_SYNTAX_ERR; + + return uri; + }, + + /** + * Determines if a web handler is already registered. + * + * @param aProtocol + * The scheme of the web handler we are checking for. + * @param aURITemplate + * The URI template that the handler uses to handle the protocol. + * @return true if it is already registered, false otherwise. + */ + _protocolHandlerRegistered: function protocolHandlerRegistered(aProtocol, aURITemplate) { + var eps = Cc["@mozilla.org/uriloader/external-protocol-service;1"] + .getService(Ci.nsIExternalProtocolService); + var handlerInfo = eps.getProtocolHandlerInfo(aProtocol); + var handlers = handlerInfo.possibleApplicationHandlers; + for (let i = 0; i < handlers.length; i++) { + try { // We only want to test web handlers + let handler = handlers.queryElementAt(i, Ci.nsIWebHandlerApp); + if (handler.uriTemplate == aURITemplate) + return true; + } catch (e) { /* it wasn't a web handler */ } + } + return false; + }, + + /** + * See nsIWebContentHandlerRegistrar + */ + registerProtocolHandler: function registerProtocolHandler(aProtocol, aURIString, + aTitle, aContentWindow) { + LOG("registerProtocolHandler(" + aProtocol + "," + aURIString + "," + aTitle + ")"); + + var win = aContentWindow; + var isPB = win.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIWebNavigation) + .QueryInterface(Ci.nsIDocShell) + .QueryInterface(Ci.nsILoadContext) + .usePrivateBrowsing; + if (isPB) { + // Inside the private browsing mode, we don't want to alert the user to save + // a protocol handler. We log it to the error console so that web developers + // would have some way to tell what's going wrong. + Services.console.logStringMessage("Web page denied access to register a protocol handler inside private browsing mode"); + return; + } + + // First, check to make sure this isn't already handled internally (we don't + // want to let them take over, say "chrome"). + var handler = Services.io.getProtocolHandler(aProtocol); + if (!(handler instanceof Ci.nsIExternalProtocolHandler)) { + // This is handled internally, so we don't want them to register + Services.console.logStringMessage("Permission denied to add " + aURIString + " as a protocol handler"); + return; + } + + // check if it is in the black list + var allowed; + try { + allowed = Services.prefs.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "." + aProtocol); + } + catch (e) { + allowed = Services.prefs.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "-default"); + } + if (!allowed) { + Services.console.logStringMessage("Not allowed to register a protocol handler for " + aProtocol); + return; + } + + var uri = this._checkAndGetURI(aURIString, aContentWindow); + + var buttons, message; + if (this._protocolHandlerRegistered(aProtocol, uri.spec)) + message = this._getFormattedString("protocolHandlerRegistered", + [aTitle, aProtocol]); + else { + // Now Ask the user and provide the proper callback + message = this._getFormattedString("addProtocolHandler", + [aTitle, uri.host, aProtocol]); + var notificationIcon = uri.resolve("/favicon.ico"); + var notificationValue = "Protocol Registration: " + aProtocol; + var addButton = { + label: this._getString("addProtocolHandlerAddButton"), + accessKey: this._getString("addHandlerAddButtonAccesskey"), + protocolInfo: { protocol: aProtocol, uri: uri.spec, name: aTitle }, + + callback: function addProtocolHandlerButtonCallback(aNotification, aButtonInfo) { + var protocol = aButtonInfo.protocolInfo.protocol; + var uri = aButtonInfo.protocolInfo.uri; + var name = aButtonInfo.protocolInfo.name; + + var handler = Cc["@mozilla.org/uriloader/web-handler-app;1"] + .createInstance(Ci.nsIWebHandlerApp); + handler.name = name; + handler.uriTemplate = uri; + + var eps = Cc["@mozilla.org/uriloader/external-protocol-service;1"] + .getService(Ci.nsIExternalProtocolService); + var handlerInfo = eps.getProtocolHandlerInfo(protocol); + handlerInfo.possibleApplicationHandlers.appendElement(handler); + + // Since the user has agreed to add a new handler, chances are good + // that the next time they see a handler of this type, they're going + // to want to use it. Reset the handlerInfo to ask before the next + // use. + handlerInfo.alwaysAskBeforeHandling = true; + + var hs = Cc["@mozilla.org/uriloader/handler-service;1"] + .getService(Ci.nsIHandlerService); + hs.store(handlerInfo); + } + }; + buttons = [addButton]; + } + + var notificationBox = getNotificationBox(aContentWindow); + notificationBox.appendNotification(message, + notificationValue, + notificationIcon, + notificationBox.PRIORITY_INFO_LOW, + buttons); + }, + + /** + * See nsIWebContentHandlerRegistrar + * If a DOM window is provided, then the request came from content, so we + * prompt the user to confirm the registration. + */ + registerContentHandler: function registerContentHandler(aContentType, aURIString, + aTitle, aContentWindow) { + LOG("registerContentHandler(" + aContentType + "," + aURIString + "," + aTitle + ")"); + + // We only support feed types at present. + // XXX this should be a "security exception" according to spec, but that + // isn't defined yet. + var contentType = this._resolveContentType(aContentType); + if (contentType != TYPE_MAYBE_FEED) + return; + + if (aContentWindow) { + var uri = this._checkAndGetURI(aURIString, aContentWindow); + + this._appendFeedReaderNotification(uri, aTitle, getNotificationBox(aContentWindow)); + } + else + this._registerContentHandler(contentType, aURIString, aTitle); + }, + + /** + * Appends a notifcation for the given feed reader details. + * + * The notification could be either a pseudo-dialog which lets + * the user to add the feed reader: + * [ [icon] Add %feed-reader-name% (%feed-reader-host%) as a Feed Reader? (Add) [x] ] + * + * or a simple message for the case where the feed reader is already registered: + * [ [icon] %feed-reader-name% is already registered as a Feed Reader [x] ] + * + * A new notification isn't appended if the given notificationbox has a + * notification for the same feed reader. + * + * @param aURI + * The url of the feed reader as a nsIURI object + * @param aName + * The feed reader name as it was passed to registerContentHandler + * @param aNotificationBox + * The notification box to which a notification might be appended + * @return true if a notification has been appended, false otherwise. + */ + _appendFeedReaderNotification: function appendFeedReaderNotification(aURI, aName, aNotificationBox) { + var uriSpec = aURI.spec; + var notificationValue = "feed reader notification: " + uriSpec; + var notificationIcon = aURI.resolve("/favicon.ico"); + + // Don't append a new notification if the notificationbox + // has a notification for the given feed reader already + if (aNotificationBox.getNotificationWithValue(notificationValue)) + return false; + + var buttons, message; + if (this.getWebContentHandlerByURI(TYPE_MAYBE_FEED, uriSpec)) + message = this._getFormattedString("handlerRegistered", [aName]); + else { + message = this._getFormattedString("addHandler", [aName, aURI.host]); + var self = this; + var addButton = { + _outer: self, + label: self._getString("addHandlerAddButton"), + accessKey: self._getString("addHandlerAddButtonAccesskey"), + feedReaderInfo: { uri: uriSpec, name: aName }, + + /* static */ + callback: function addFeedReaderButtonCallback(aNotification, aButtonInfo) { + var uri = aButtonInfo.feedReaderInfo.uri; + var name = aButtonInfo.feedReaderInfo.name; + var outer = aButtonInfo._outer; + + // The reader could have been added from another window mean while + if (!outer.getWebContentHandlerByURI(TYPE_MAYBE_FEED, uri)) + outer._registerContentHandler(TYPE_MAYBE_FEED, uri, name); + + // avoid reference cycles + aButtonInfo._outer = null; + + return false; + } + }; + buttons = [addButton]; + } + + aNotificationBox.appendNotification(message, + notificationValue, + notificationIcon, + aNotificationBox.PRIORITY_INFO_LOW, + buttons); + return true; + }, + + /** + * Save Web Content Handler metadata to persistent preferences. + * @param contentType + * The content Type being handled + * @param uri + * The uri of the web service + * @param title + * The human readable name of the web service + * + * This data is stored under: + * + * browser.contentHandlers.type0 = content/type + * browser.contentHandlers.uri0 = http://www.foo.com/q=%s + * browser.contentHandlers.title0 = Foo 2.0alphr + */ + _saveContentHandlerToPrefs: function saveContentHandlerToPrefs(contentType, uri, title) { + var i = 0; + var typeBranch = null; + while (true) { + typeBranch = Services.prefs.getBranch(PREF_CONTENTHANDLERS_BRANCH + i + "."); + try { + typeBranch.getCharPref("type"); + ++i; + } + catch (e) { + // No more handlers + break; + } + } + if (typeBranch) { + typeBranch.setCharPref("type", contentType); + var pls = Cc["@mozilla.org/pref-localizedstring;1"] + .createInstance(Ci.nsIPrefLocalizedString); + pls.data = uri; + typeBranch.setComplexValue("uri", + Ci.nsIPrefLocalizedString, pls); + pls.data = title; + typeBranch.setComplexValue("title", + Ci.nsIPrefLocalizedString, pls); + + Services.prefs.savePrefFile(null); + } + }, + + /** + * Determines if there is a type with a particular uri registered for the + * specified content type already. + * @param contentType + * The content type that the uri handles + * @param uri + * The uri of the + */ + _typeIsRegistered: function typeIsRegistered(contentType, uri) { + if (!(contentType in this._contentTypes)) + return false; + + var services = this._contentTypes[contentType]; + for (let i = 0; i < services.length; ++i) { + // This uri has already been registered + if (services[i].uri == uri) + return true; + } + return false; + }, + + /** + * Gets a stream converter contract id for the specified content type. + * @param contentType + * The source content type for the conversion. + * @returns A contract id to construct a converter to convert between the + * contentType and *\/*. + */ + _getConverterContractID: function getConverterContractID(contentType) { + const template = "@mozilla.org/streamconv;1?from=%s&to=*/*"; + return template.replace(/%s/, contentType); + }, + + /** + * Register a web service handler for a content type. + * + * @param contentType + * the content type being handled + * @param uri + * the URI of the web service + * @param title + * the human readable name of the web service + */ + _registerContentHandler: function registerContentHandler(contentType, uri, title) { + this._updateContentTypeHandlerMap(contentType, uri, title); + this._saveContentHandlerToPrefs(contentType, uri, title); + + if (contentType == TYPE_MAYBE_FEED) { + // Make the new handler the last-selected reader in the preview page + // and make sure the preview page is shown the next time a feed is visited + Services.prefs.setCharPref(PREF_SELECTED_READER, "web"); + + Services.prefs.setStringPref(PREF_SELECTED_WEB, uri); + Services.prefs.setCharPref(PREF_SELECTED_ACTION, "ask"); + this._setAutoHandler(TYPE_MAYBE_FEED, null); + } + }, + + /** + * Update the content type -> handler map. This mapping is not persisted, use + * registerContentHandler or _saveContentHandlerToPrefs for that purpose. + * @param contentType + * The content Type being handled + * @param uri + * The uri of the web service + * @param title + * The human readable name of the web service + */ + _updateContentTypeHandlerMap: function updateContentTypeHandlerMap(contentType, uri, title) { + if (!(contentType in this._contentTypes)) + this._contentTypes[contentType] = []; + + // Avoid adding duplicates + if (this._typeIsRegistered(contentType, uri)) + return; + + this._contentTypes[contentType].push(new ServiceInfo(contentType, uri, title)); + + if (!(contentType in this._blockedTypes)) { + var converterContractID = this._getConverterContractID(contentType); + var cr = Components.manager.QueryInterface(Ci.nsIComponentRegistrar); + cr.registerFactory(WCC_CLASSID, WCC_CLASSNAME, converterContractID, + WebContentConverterFactory); + } + }, + + /** + * See nsIWebContentConverterService + */ + getContentHandlers: function getContentHandlers(contentType, countRef) { + countRef.value = 0; + if (!(contentType in this._contentTypes)) + return []; + + var handlers = this._contentTypes[contentType]; + countRef.value = handlers.length; + return handlers; + }, + + /** + * See nsIWebContentConverterService + */ + resetHandlersForType: function resetHandlersForType(contentType) { + // currently unused within the tree, so only useful for extensions; previous + // impl. was buggy (and even infinite-looped!), so I argue that this is a + // definite improvement + throw Cr.NS_ERROR_NOT_IMPLEMENTED; + }, + + /** + * Registers a handler from the settings on a preferences branch. + * + * @param branch + * an nsIPrefBranch containing "type", "uri", and "title" preferences + * corresponding to the content handler to be registered + */ + _registerContentHandlerWithBranch: function(branch) { + /** + * Since we support up to six predefined readers, we need to handle gaps + * better, since the first branch with user-added values will be .6 + * + * How we deal with that is to check to see if there's no prefs in the + * branch and stop cycling once that's true. This doesn't fix the case + * where a user manually removes a reader, but that's not supported yet! + */ + var vals = branch.getChildList(""); + if (vals.length == 0) + return; + + try { + var type = branch.getCharPref("type"); + var uri = branch.getComplexValue("uri", Ci.nsIPrefLocalizedString).data; + var title = branch.getComplexValue("title", + Ci.nsIPrefLocalizedString).data; + this._updateContentTypeHandlerMap(type, uri, title); + } + catch(ex) { + // do nothing, the next branch might have values + } + }, + + /** + * Load the auto handler, content handler and protocol tables from + * preferences. + */ + _init: function init() { + var kids = Services.prefs.getBranch(PREF_CONTENTHANDLERS_BRANCH) + .getChildList(""); + // first get the numbers of the providers by getting all ###.uri prefs + var nums = []; + for (let i = 0; i < kids.length; i++) { + let match = /^(\d+)\.uri$/.exec(kids[i]); + if (match) + nums.push(match[1]); + } + // sort them, to get them back in order + nums.sort(function(a, b) {return a - b;}); + // now register them + for (let i = 0; i < nums.length; i++) { + let branch = Services.prefs.getBranch(PREF_CONTENTHANDLERS_BRANCH + nums[i] + "."); + this._registerContentHandlerWithBranch(branch); + } + + // We need to do this _after_ registering all of the available handlers, + // so that getWebContentHandlerByURI can return successfully. + try { + var autoBranch = Services.prefs.getBranch(PREF_CONTENTHANDLERS_AUTO); + var childPrefs = autoBranch.getChildList(""); + for (let i = 0; i < childPrefs.length; ++i) { + let type = childPrefs[i]; + let uri = autoBranch.getCharPref(type); + if (uri) { + let handler = this.getWebContentHandlerByURI(type, uri); + this._setAutoHandler(type, handler); + } + } + } + catch (e) { + } + }, + + /** + * See nsIObserver + */ + observe: function observe(subject, topic, data) { + switch (topic) { + case "app-startup": + Services.obs.addObserver(this, "final-ui-startup"); + break; + case "final-ui-startup": + Services.obs.removeObserver(this, "final-ui-startup"); + this._init(); + break; + } + }, + + /** + * See nsIFactory + */ + createInstance: function createInstance(outer, iid) { + if (outer != null) + throw Cr.NS_ERROR_NO_AGGREGATION; + return this.QueryInterface(iid); + }, + + classID: WCCR_CLASSID, + classInfo: XPCOMUtils.generateCI({ + classID: WCCR_CLASSID, + contractID: WCCR_CONTRACTID, + interfaces: [Ci.nsIWebContentConverterService, + Ci.nsIWebContentHandlerRegistrar, + Ci.nsIObserver, + Ci.nsIFactory], + flags: Ci.nsIClassInfo.DOM_OBJECT}), + + /** + * See nsISupports + */ + QueryInterface: XPCOMUtils.generateQI( + [Ci.nsIWebContentConverterService, + Ci.nsIWebContentHandlerRegistrar, + Ci.nsIObserver, + Ci.nsIFactory]) +}; + +var NSGetFactory = XPCOMUtils.generateNSGetFactory([WebContentConverterRegistrar]); |