diff options
Diffstat (limited to 'browser/components/feeds/FeedWriter.js')
| -rw-r--r-- | browser/components/feeds/FeedWriter.js | 1007 |
1 files changed, 0 insertions, 1007 deletions
diff --git a/browser/components/feeds/FeedWriter.js b/browser/components/feeds/FeedWriter.js deleted file mode 100644 index 20f1399b0..000000000 --- a/browser/components/feeds/FeedWriter.js +++ /dev/null @@ -1,1007 +0,0 @@ -/* -*- indent-tabs-mode: nil; js-indent-level: 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/. */ - -const Cc = Components.classes; -const Ci = Components.interfaces; -const Cr = Components.results; -const Cu = Components.utils; - -Cu.import("resource://gre/modules/XPCOMUtils.jsm"); -Cu.import("resource://gre/modules/Services.jsm"); -Cu.import("resource://gre/modules/NetUtil.jsm"); - -const FEEDWRITER_CID = Components.ID("{49bb6593-3aff-4eb3-a068-2712c28bd58e}"); -const FEEDWRITER_CONTRACTID = "@mozilla.org/browser/feeds/result-writer;1"; - -function LOG(str) { - let prefB = Cc["@mozilla.org/preferences-service;1"]. - getService(Ci.nsIPrefBranch); - - let shouldLog = false; - try { - shouldLog = prefB.getBoolPref("feeds.log"); - } - catch (ex) { - } - - if (shouldLog) - dump("*** Feeds: " + str + "\n"); -} - -/** - * Wrapper function for nsIIOService::newURI. - * @param aURLSpec - * The URL string from which to create an nsIURI. - * @returns an nsIURI object, or null if the creation of the URI failed. - */ -function makeURI(aURLSpec, aCharset) { - let ios = Cc["@mozilla.org/network/io-service;1"]. - getService(Ci.nsIIOService); - try { - return ios.newURI(aURLSpec, aCharset, null); - } catch (ex) { } - - return null; -} - -const XML_NS = "http://www.w3.org/XML/1998/namespace"; -const HTML_NS = "http://www.w3.org/1999/xhtml"; -const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"; -const URI_BUNDLE = "chrome://browser/locale/feeds/subscribe.properties"; - -const TITLE_ID = "feedTitleText"; -const SUBTITLE_ID = "feedSubtitleText"; - -/** - * Converts a number of bytes to the appropriate unit that results in a - * number that needs fewer than 4 digits - * - * @return a pair: [new value with 3 sig. figs., its unit] - */ -function convertByteUnits(aBytes) { - let units = ["bytes", "kilobyte", "megabyte", "gigabyte"]; - let unitIndex = 0; - - // convert to next unit if it needs 4 digits (after rounding), but only if - // we know the name of the next unit - while ((aBytes >= 999.5) && (unitIndex < units.length - 1)) { - aBytes /= 1024; - unitIndex++; - } - - // Get rid of insignificant bits by truncating to 1 or 0 decimal points - // 0 -> 0; 1.2 -> 1.2; 12.3 -> 12.3; 123.4 -> 123; 234.5 -> 235 - aBytes = aBytes.toFixed((aBytes > 0) && (aBytes < 100) ? 1 : 0); - - return [aBytes, units[unitIndex]]; -} - -function FeedWriter() { - this._selectedApp = undefined; - this._selectedAppMenuItem = null; - this._subscribeCallback = null; - this._defaultHandlerMenuItem = null; -} - -FeedWriter.prototype = { - _getPropertyAsBag(container, property) { - return container.fields.getProperty(property). - QueryInterface(Ci.nsIPropertyBag2); - }, - - _getPropertyAsString(container, property) { - try { - return container.fields.getPropertyAsAString(property); - } - catch (e) { - } - return ""; - }, - - _setContentText(id, text) { - let element = this._document.getElementById(id); - let textNode = text.createDocumentFragment(element); - while (element.hasChildNodes()) - element.removeChild(element.firstChild); - element.appendChild(textNode); - if (text.base) { - element.setAttributeNS(XML_NS, 'base', text.base.spec); - } - }, - - /** - * Safely sets the href attribute on an anchor tag, providing the URI - * specified can be loaded according to rules. - * @param element - * The element to set a URI attribute on - * @param attribute - * The attribute of the element to set the URI to, e.g. href or src - * @param uri - * The URI spec to set as the href - */ - _safeSetURIAttribute(element, attribute, uri) { - let secman = Cc["@mozilla.org/scriptsecuritymanager;1"]. - getService(Ci.nsIScriptSecurityManager); - const flags = Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL; - try { - // TODO Is this necessary? - secman.checkLoadURIStrWithPrincipal(this._feedPrincipal, uri, flags); - // checkLoadURIStrWithPrincipal will throw if the link URI should not be - // loaded, either because our feedURI isn't allowed to load it or per - // the rules specified in |flags|, so we'll never "linkify" the link... - } - catch (e) { - // Not allowed to load this link because secman.checkLoadURIStr threw - return; - } - - element.setAttribute(attribute, uri); - }, - - __bundle: null, - get _bundle() { - if (!this.__bundle) { - this.__bundle = Cc["@mozilla.org/intl/stringbundle;1"]. - getService(Ci.nsIStringBundleService). - createBundle(URI_BUNDLE); - } - return this.__bundle; - }, - - _getFormattedString(key, params) { - return this._bundle.formatStringFromName(key, params, params.length); - }, - - _getString(key) { - return this._bundle.GetStringFromName(key); - }, - - _setCheckboxCheckedState(aValue) { - let checkbox = this._document.getElementById("alwaysUse"); - if (checkbox) { - // see checkbox.xml, xbl bindings are not applied within the sandbox! TODO - let change = (aValue != (checkbox.getAttribute("checked") == "true")); - if (aValue) - checkbox.setAttribute("checked", "true"); - else - checkbox.removeAttribute("checked"); - - if (change) { - let event = this._document.createEvent("Events"); - event.initEvent("CheckboxStateChange", true, true); - checkbox.dispatchEvent(event); - } - } - }, - - /** - * Returns a date suitable for displaying in the feed preview. - * If the date cannot be parsed, the return value is "false". - * @param dateString - * A date as extracted from a feed entry. (entry.updated) - */ - _parseDate(dateString) { - // Convert the date into the user's local time zone - let dateObj = new Date(dateString); - - // Make sure the date we're given is valid. - if (!dateObj.getTime()) - return false; - - return this._dateFormatter.format(dateObj); - }, - - __dateFormatter: null, - get _dateFormatter() { - if (!this.__dateFormatter) { - const locale = Cc["@mozilla.org/chrome/chrome-registry;1"] - .getService(Ci.nsIXULChromeRegistry) - .getSelectedLocale("global", true); - const dtOptions = { year: 'numeric', month: 'long', day: 'numeric', - hour: 'numeric', minute: 'numeric' }; - this.__dateFormatter = new Intl.DateTimeFormat(locale, dtOptions); - } - return this.__dateFormatter; - }, - - /** - * Returns the feed type. - */ - __feedType: null, - _getFeedType() { - if (this.__feedType != null) - return this.__feedType; - - try { - // grab the feed because it's got the feed.type in it. - let container = this._getContainer(); - let feed = container.QueryInterface(Ci.nsIFeed); - this.__feedType = feed.type; - return feed.type; - } catch (ex) { } - - return Ci.nsIFeed.TYPE_FEED; - }, - - /** - * Writes the feed title into the preview document. - * @param container - * The feed container - */ - _setTitleText(container) { - if (container.title) { - let title = container.title.plainText(); - this._setContentText(TITLE_ID, container.title); - this._document.title = title; - } - - let feed = container.QueryInterface(Ci.nsIFeed); - if (feed && feed.subtitle) - this._setContentText(SUBTITLE_ID, container.subtitle); - }, - - /** - * Writes the title image into the preview document if one is present. - * @param container - * The feed container - */ - _setTitleImage(container) { - try { - let parts = container.image; - - // Set up the title image (supplied by the feed) - let feedTitleImage = this._document.getElementById("feedTitleImage"); - this._safeSetURIAttribute(feedTitleImage, "src", - parts.getPropertyAsAString("url")); - - // Set up the title image link - let feedTitleLink = this._document.getElementById("feedTitleLink"); - - let titleText = this._getFormattedString("linkTitleTextFormat", - [parts.getPropertyAsAString("title")]); - let feedTitleText = this._document.getElementById("feedTitleText"); - let titleImageWidth = parseInt(parts.getPropertyAsAString("width")) + 15; - - // Fix the margin on the main title, so that the image doesn't run over - // the underline - feedTitleLink.setAttribute('title', titleText); - feedTitleText.style.marginRight = titleImageWidth + 'px'; - - this._safeSetURIAttribute(feedTitleLink, "href", - parts.getPropertyAsAString("link")); - } - catch (e) { - LOG("Failed to set Title Image (this is benign): " + e); - } - }, - - /** - * Writes all entries contained in the feed. - * @param container - * The container of entries in the feed - */ - _writeFeedContent(container) { - // Build the actual feed content - let feed = container.QueryInterface(Ci.nsIFeed); - if (feed.items.length == 0) - return; - - let feedContent = this._document.getElementById("feedContent"); - - for (let i = 0; i < feed.items.length; ++i) { - let entry = feed.items.queryElementAt(i, Ci.nsIFeedEntry); - entry.QueryInterface(Ci.nsIFeedContainer); - - let entryContainer = this._document.createElementNS(HTML_NS, "div"); - entryContainer.className = "entry"; - - // If the entry has a title, make it a link - if (entry.title) { - let a = this._document.createElementNS(HTML_NS, "a"); - let span = this._document.createElementNS(HTML_NS, "span"); - a.appendChild(span); - if (entry.title.base) - span.setAttributeNS(XML_NS, "base", entry.title.base.spec); - span.appendChild(entry.title.createDocumentFragment(a)); - - // Entries are not required to have links, so entry.link can be null. - if (entry.link) - this._safeSetURIAttribute(a, "href", entry.link.spec); - - let title = this._document.createElementNS(HTML_NS, "h3"); - title.appendChild(a); - - let lastUpdated = this._parseDate(entry.updated); - if (lastUpdated) { - let dateDiv = this._document.createElementNS(HTML_NS, "div"); - dateDiv.className = "lastUpdated"; - dateDiv.textContent = lastUpdated; - title.appendChild(dateDiv); - } - - entryContainer.appendChild(title); - } - - let body = this._document.createElementNS(HTML_NS, "div"); - let summary = entry.summary || entry.content; - let docFragment = null; - if (summary) { - if (summary.base) - body.setAttributeNS(XML_NS, "base", summary.base.spec); - else - LOG("no base?"); - docFragment = summary.createDocumentFragment(body); - if (docFragment) - body.appendChild(docFragment); - - // If the entry doesn't have a title, append a # permalink - // See http://scripting.com/rss.xml for an example - if (!entry.title && entry.link) { - let a = this._document.createElementNS(HTML_NS, "a"); - a.appendChild(this._document.createTextNode("#")); - this._safeSetURIAttribute(a, "href", entry.link.spec); - body.appendChild(this._document.createTextNode(" ")); - body.appendChild(a); - } - - } - body.className = "feedEntryContent"; - entryContainer.appendChild(body); - - if (entry.enclosures && entry.enclosures.length > 0) { - let enclosuresDiv = this._buildEnclosureDiv(entry); - entryContainer.appendChild(enclosuresDiv); - } - - let clearDiv = this._document.createElementNS(HTML_NS, "div"); - clearDiv.style.clear = "both"; - - feedContent.appendChild(entryContainer); - feedContent.appendChild(clearDiv); - } - }, - - /** - * Takes a url to a media item and returns the best name it can come up with. - * Frequently this is the filename portion (e.g. passing in - * http://example.com/foo.mpeg would return "foo.mpeg"), but in more complex - * cases, this will return the entire url (e.g. passing in - * http://example.com/somedirectory/ would return - * http://example.com/somedirectory/). - * @param aURL - * The URL string from which to create a display name - * @returns a string - */ - _getURLDisplayName(aURL) { - let url = makeURI(aURL); - url.QueryInterface(Ci.nsIURL); - if (url == null || url.fileName.length == 0) - return decodeURIComponent(aURL); - - return decodeURIComponent(url.fileName); - }, - - /** - * Takes a FeedEntry with enclosures, generates the HTML code to represent - * them, and returns that. - * @param entry - * FeedEntry with enclosures - * @returns element - */ - _buildEnclosureDiv(entry) { - let enclosuresDiv = this._document.createElementNS(HTML_NS, "div"); - enclosuresDiv.className = "enclosures"; - - enclosuresDiv.appendChild(this._document.createTextNode(this._getString("mediaLabel"))); - - for (let i_enc = 0; i_enc < entry.enclosures.length; ++i_enc) { - let enc = entry.enclosures.queryElementAt(i_enc, Ci.nsIWritablePropertyBag2); - - if (!(enc.hasKey("url"))) - continue; - - let enclosureDiv = this._document.createElementNS(HTML_NS, "div"); - enclosureDiv.setAttribute("class", "enclosure"); - - let mozicon = "moz-icon://.txt?size=16"; - let type_text = null; - let size_text = null; - - if (enc.hasKey("type")) { - type_text = enc.get("type"); - if (enc.hasKey("typeDesc")) - type_text = enc.get("typeDesc"); - - if (type_text && type_text.length > 0) - mozicon = "moz-icon://goat?size=16&contentType=" + enc.get("type"); - } - - if (enc.hasKey("length") && /^[0-9]+$/.test(enc.get("length"))) { - let enc_size = convertByteUnits(parseInt(enc.get("length"))); - - size_text = this._getFormattedString("enclosureSizeText", - [enc_size[0], - this._getString(enc_size[1])]); - } - - let iconimg = this._document.createElementNS(HTML_NS, "img"); - iconimg.setAttribute("src", mozicon); - iconimg.setAttribute("class", "type-icon"); - enclosureDiv.appendChild(iconimg); - - enclosureDiv.appendChild(this._document.createTextNode( " " )); - - let enc_href = this._document.createElementNS(HTML_NS, "a"); - enc_href.appendChild(this._document.createTextNode(this._getURLDisplayName(enc.get("url")))); - this._safeSetURIAttribute(enc_href, "href", enc.get("url")); - enclosureDiv.appendChild(enc_href); - - if (type_text && size_text) - enclosureDiv.appendChild(this._document.createTextNode( " (" + type_text + ", " + size_text + ")")); - - else if (type_text) - enclosureDiv.appendChild(this._document.createTextNode( " (" + type_text + ")")) - - else if (size_text) - enclosureDiv.appendChild(this._document.createTextNode( " (" + size_text + ")")) - - enclosuresDiv.appendChild(enclosureDiv); - } - - return enclosuresDiv; - }, - - /** - * Gets a valid nsIFeedContainer object from the parsed nsIFeedResult. - * Displays error information if there was one. - * @returns A valid nsIFeedContainer object containing the contents of - * the feed. - */ - _getContainer() { - let feedService = - Cc["@mozilla.org/browser/feeds/result-service;1"]. - getService(Ci.nsIFeedResultService); - - let result; - try { - result = - feedService.getFeedResult(this._getOriginalURI(this._window)); - } - catch (e) { - LOG("Subscribe Preview: feed not available?!"); - } - - if (result.bozo) { - LOG("Subscribe Preview: feed result is bozo?!"); - } - - let container; - try { - container = result.doc; - } - catch (e) { - LOG("Subscribe Preview: no result.doc? Why didn't the original reload?"); - return null; - } - return container; - }, - - /** - * Get moz-icon url for a file - * @param file - * A nsIFile object for which the moz-icon:// is returned - * @returns moz-icon url of the given file as a string - */ - _getFileIconURL(file) { - let ios = Cc["@mozilla.org/network/io-service;1"]. - getService(Ci.nsIIOService); - let fph = ios.getProtocolHandler("file") - .QueryInterface(Ci.nsIFileProtocolHandler); - let urlSpec = fph.getURLSpecFromFile(file); - return "moz-icon://" + urlSpec + "?size=16"; - }, - - /** - * Displays a prompt from which the user may choose a (client) feed reader. - * @param aCallback the callback method, passes in true if a feed reader was - * selected, false otherwise. - */ - _chooseClientApp(aCallback) { - this._subscribeCallback = aCallback; - this._mm.sendAsyncMessage("FeedWriter:ChooseClientApp", - { title: this._getString("chooseApplicationDialogTitle"), - feedType: this._getFeedType() }); - }, - - _setSubscribeUsingLabel() { - let stringLabel = "subscribeFeedUsing"; - switch (this._getFeedType()) { - case Ci.nsIFeed.TYPE_VIDEO: - stringLabel = "subscribeVideoPodcastUsing"; - break; - - case Ci.nsIFeed.TYPE_AUDIO: - stringLabel = "subscribeAudioPodcastUsing"; - break; - } - - let subscribeUsing = this._document.getElementById("subscribeUsingDescription"); - let textNode = this._document.createTextNode(this._getString(stringLabel)); - subscribeUsing.insertBefore(textNode, subscribeUsing.firstChild); - }, - - _setAlwaysUseLabel() { - let checkbox = this._document.getElementById("alwaysUse"); - if (checkbox && this._handlersList) { - let handlerName = this._handlersList.selectedOptions[0] - .textContent; - let stringLabel = "alwaysUseForFeeds"; - switch (this._getFeedType()) { - case Ci.nsIFeed.TYPE_VIDEO: - stringLabel = "alwaysUseForVideoPodcasts"; - break; - - case Ci.nsIFeed.TYPE_AUDIO: - stringLabel = "alwaysUseForAudioPodcasts"; - break; - } - - let label = this._getFormattedString(stringLabel, [handlerName]); - - let checkboxText = this._document.getElementById("checkboxText"); - if (checkboxText.lastChild.nodeType == checkboxText.TEXT_NODE) { - checkboxText.lastChild.textContent = label; - } else { - LOG("FeedWriter._setAlwaysUseLabel: Expected textNode as lastChild of alwaysUse label"); - let textNode = this._document.createTextNode(label); - checkboxText.appendChild(textNode); - } - } - }, - - // nsIDomEventListener - handleEvent(event) { - if (event.target.ownerDocument != this._document) { - LOG("FeedWriter.handleEvent: Someone passed the feed writer as a listener to the events of another document!"); - return; - } - - switch (event.type) { - case "click": - if (event.target.id == "subscribeButton") { - this.subscribe(); - } - break; - case "change": - LOG("Change fired"); - if (event.target.selectedOptions[0].id == "chooseApplicationMenuItem") { - this._chooseClientApp(() => { - // Select the (per-prefs) selected handler if no application - // was selected - LOG("Selected handler after callback"); - this._setAlwaysUseLabel(); - }); - } else { - this._setAlwaysUseLabel(); - } - break; - } - }, - - _getWebHandlerElementsForURL(aURL) { - return this._handlersList.querySelectorAll('[webhandlerurl="' + aURL + '"]'); - }, - - _setSelectedHandlerResponse(handler, url) { - LOG(`Selecting handler response ${handler} ${url}`); - switch (handler) { - case "web": { - if (this._handlersList) { - let handlers = - this._getWebHandlerElementsForURL(url); - if (handlers.length == 0) { - LOG(`Selected web handler isn't in the menulist ${url}`); - return; - } - - handlers[0].selected = true; - } - break; - } - case "client": - case "default": - // do nothing, these are handled by the onchange event - break; - case "bookmarks": - default: { - let liveBookmarksMenuItem = this._document.getElementById("liveBookmarksMenuItem"); - if (liveBookmarksMenuItem) - liveBookmarksMenuItem.selected = true; - } - } - }, - - _initSubscriptionUI(setupMessage) { - if (!this._handlersList) - return; - LOG("UI init"); - - let feedType = this._getFeedType(); - - // change the background - let header = this._document.getElementById("feedHeader"); - switch (feedType) { - case Ci.nsIFeed.TYPE_VIDEO: - header.className = 'videoPodcastBackground'; - break; - - case Ci.nsIFeed.TYPE_AUDIO: - header.className = 'audioPodcastBackground'; - break; - - default: - header.className = 'feedBackground'; - } - - let liveBookmarksMenuItem = this._document.getElementById("liveBookmarksMenuItem"); - - // Last-selected application - let menuItem = liveBookmarksMenuItem.cloneNode(false); - menuItem.removeAttribute("selected"); - menuItem.setAttribute("id", "selectedAppMenuItem"); - menuItem.setAttribute("handlerType", "client"); - - // Hide the menuitem until we select an app - menuItem.style.display = "none"; - this._selectedAppMenuItem = menuItem; - - this._handlersList.appendChild(this._selectedAppMenuItem); - - // Create the menuitem for the default reader, but don't show/populate it until - // we get confirmation of what it is from the parent - menuItem = liveBookmarksMenuItem.cloneNode(false); - menuItem.removeAttribute("selected"); - menuItem.setAttribute("id", "defaultHandlerMenuItem"); - menuItem.setAttribute("handlerType", "client"); - menuItem.style.display = "none"; - - this._defaultHandlerMenuItem = menuItem; - this._handlersList.appendChild(this._defaultHandlerMenuItem); - - // "Choose Application..." menuitem - menuItem = liveBookmarksMenuItem.cloneNode(false); - menuItem.removeAttribute("selected"); - menuItem.setAttribute("id", "chooseApplicationMenuItem"); - menuItem.textContent = this._getString("chooseApplicationMenuItem"); - - this._handlersList.appendChild(menuItem); - - // separator - let chooseAppSep = liveBookmarksMenuItem.nextElementSibling.cloneNode(false); - chooseAppSep.textContent = liveBookmarksMenuItem.nextElementSibling.textContent; - this._handlersList.appendChild(chooseAppSep); - - for (let handler of setupMessage.handlers) { - if (!handler.uri) { - LOG("Handler with name " + handler.name + " has no URI!? Skipping..."); - continue; - } - menuItem = liveBookmarksMenuItem.cloneNode(false); - menuItem.removeAttribute("selected"); - menuItem.className = "menuitem-iconic"; - menuItem.textContent = handler.name; - menuItem.setAttribute("handlerType", "web"); - menuItem.setAttribute("webhandlerurl", handler.uri); - this._handlersList.appendChild(menuItem); - } - - this._setSelectedHandlerResponse(setupMessage.reader.handler, setupMessage.reader.url); - - if (setupMessage.defaultMenuItem) { - LOG(`Setting default menu item ${setupMessage.defaultMenuItem}`); - this._setApplicationLauncherMenuItem(this._defaultHandlerMenuItem, setupMessage.defaultMenuItem); - } - if (setupMessage.selectedMenuItem) { - LOG(`Setting selected menu item ${setupMessage.selectedMenuItem}`); - this._setApplicationLauncherMenuItem(this._selectedAppMenuItem, setupMessage.selectedMenuItem); - } - - // "Subscribe using..." - this._setSubscribeUsingLabel(); - - // "Always use..." checkbox initial state - this._setCheckboxCheckedState(setupMessage.reader.alwaysUse); - this._setAlwaysUseLabel(); - - // We update the "Always use.." checkbox label whenever the selected item - // in the list is changed - this._handlersList.addEventListener("change", this); - - // Set up the "Subscribe Now" button - this._document.getElementById("subscribeButton") - .addEventListener("click", this); - - // first-run ui - if (setupMessage.showFirstRunUI) { - let textfeedinfo1, textfeedinfo2; - switch (feedType) { - case Ci.nsIFeed.TYPE_VIDEO: - textfeedinfo1 = "feedSubscriptionVideoPodcast1"; - textfeedinfo2 = "feedSubscriptionVideoPodcast2"; - break; - case Ci.nsIFeed.TYPE_AUDIO: - textfeedinfo1 = "feedSubscriptionAudioPodcast1"; - textfeedinfo2 = "feedSubscriptionAudioPodcast2"; - break; - default: - textfeedinfo1 = "feedSubscriptionFeed1"; - textfeedinfo2 = "feedSubscriptionFeed2"; - } - - let feedinfo1 = this._document.getElementById("feedSubscriptionInfo1"); - let feedinfo1Str = this._getString(textfeedinfo1); - let feedinfo2 = this._document.getElementById("feedSubscriptionInfo2"); - let feedinfo2Str = this._getString(textfeedinfo2); - - feedinfo1.textContent = feedinfo1Str; - feedinfo2.textContent = feedinfo2Str; - - header.setAttribute('firstrun', 'true'); - - this._mm.sendAsyncMessage("FeedWriter:ShownFirstRun"); - } - }, - - /** - * Returns the original URI object of the feed and ensures that this - * component is only ever invoked from the preview document. - * @param aWindow - * The window of the document invoking the BrowserFeedWriter - */ - _getOriginalURI(aWindow) { - let docShell = aWindow.QueryInterface(Ci.nsIInterfaceRequestor) - .getInterface(Ci.nsIWebNavigation) - .QueryInterface(Ci.nsIDocShell); - let chan = docShell.currentDocumentChannel; - - // We probably need to call InheritFromDocShellToDoc for this, but right now - // we can't call it from JS. - let attrs = docShell.getOriginAttributes(); - let ssm = Services.scriptSecurityManager; - let nullPrincipal = ssm.createNullPrincipal(attrs); - - // this channel is not going to be openend, use a nullPrincipal - // and the most restrctive securityFlag. - let resolvedURI = NetUtil.newChannel({ - uri: "about:feeds", - loadingPrincipal: nullPrincipal, - securityFlags: Ci.nsILoadInfo.SEC_REQUIRE_SAME_ORIGIN_DATA_IS_BLOCKED, - contentPolicyType: Ci.nsIContentPolicy.TYPE_OTHER - }).URI; - - if (resolvedURI.equals(chan.URI)) - return chan.originalURI; - - return null; - }, - - _window: null, - _document: null, - _feedURI: null, - _feedPrincipal: null, - _handlersList: null, - - // BrowserFeedWriter WebIDL methods - init(aWindow) { - let window = aWindow; - this._feedURI = this._getOriginalURI(window); - if (!this._feedURI) - return; - - this._window = window; - this._document = window.document; - this._handlersList = this._document.getElementById("handlersMenuList"); - - let secman = Cc["@mozilla.org/scriptsecuritymanager;1"]. - getService(Ci.nsIScriptSecurityManager); - this._feedPrincipal = secman.createCodebasePrincipal(this._feedURI, {}); - - LOG("Subscribe Preview: feed uri = " + this._window.location.href); - - - this._mm.addMessageListener("FeedWriter:PreferenceUpdated", this); - this._mm.addMessageListener("FeedWriter:SetApplicationLauncherMenuItem", this); - this._mm.addMessageListener("FeedWriter:GetSubscriptionUIResponse", this); - this._mm.addMessageListener("FeedWriter:SetFeedPrefsAndSubscribeResponse", this); - - const feedType = this._getFeedType(); - this._mm.sendAsyncMessage("FeedWriter:GetSubscriptionUI", - { feedType }); - }, - - receiveMessage(msg) { - if (!this._window) { - // this._window is null unless this.init was called with a trusted - // window object. - return; - } - LOG(`received message from parent ${msg.name}`); - switch (msg.name) { - case "FeedWriter:PreferenceUpdated": - // This is called when browser-feeds.js spots a pref change - // This will happen when - // - about:preferences#applications changes - // - another feed reader page changes the preference - // - when this page itself changes the select and there isn't a redirect - // bookmarks and launching an external app means the page stays open after subscribe - const feedType = this._getFeedType(); - LOG(`Got prefChange! ${JSON.stringify(msg.data)} current type: ${feedType}`); - let feedTypePref = msg.data.default; - if (feedType in msg.data) { - feedTypePref = msg.data[feedType]; - } - LOG(`Got pref ${JSON.stringify(feedTypePref)}`); - this._setCheckboxCheckedState(feedTypePref.alwaysUse); - this._setSelectedHandlerResponse(feedTypePref.handler, feedTypePref.url); - this._setAlwaysUseLabel(); - break; - case "FeedWriter:SetFeedPrefsAndSubscribeResponse": - LOG(`FeedWriter:SetFeedPrefsAndSubscribeResponse - Redirecting ${msg.data.redirect}`); - this._window.location.href = msg.data.redirect; - break; - case "FeedWriter:GetSubscriptionUIResponse": - // Set up the subscription UI - this._initSubscriptionUI(msg.data); - break; - case "FeedWriter:SetApplicationLauncherMenuItem": - LOG(`FeedWriter:SetApplicationLauncherMenuItem - picked ${msg.data.name}`); - this._setApplicationLauncherMenuItem(this._selectedAppMenuItem, msg.data.name); - // Potentially a bit racy, but I don't think we can get into a state where this callback is set and - // we're not coming back from ChooseClientApp in browser-feeds.js - if (this._subscribeCallback) { - this._subscribeCallback(); - this._subscribeCallback = null; - } - break; - } - }, - - _setApplicationLauncherMenuItem(menuItem, aName) { - /* unselect all handlers */ - [...this._handlersList.children].forEach((option) => { - option.removeAttribute("selected"); - }); - menuItem.textContent = aName; - menuItem.style.display = ""; - menuItem.selected = true; - }, - - writeContent() { - if (!this._window) - return; - - try { - // Set up the feed content - let container = this._getContainer(); - if (!container) - return; - - this._setTitleText(container); - this._setTitleImage(container); - this._writeFeedContent(container); - } - finally { - this._removeFeedFromCache(); - } - }, - - close() { - this._document.getElementById("subscribeButton") - .removeEventListener("click", this, false); - this._handlersList - .removeEventListener("change", this, false); - this._document = null; - this._window = null; - this._handlersList = null; - - this._removeFeedFromCache(); - this.__bundle = null; - this._feedURI = null; - - this._selectedApp = undefined; - this._selectedAppMenuItem = null; - this._defaultHandlerMenuItem = null; - }, - - _removeFeedFromCache() { - if (this._feedURI) { - let feedService = Cc["@mozilla.org/browser/feeds/result-service;1"]. - getService(Ci.nsIFeedResultService); - feedService.removeFeedResult(this._feedURI); - this._feedURI = null; - } - }, - - subscribe() { - let feedType = this._getFeedType(); - - // Subscribe to the feed using the selected handler and save prefs - let defaultHandler = "reader"; - let useAsDefault = this._document.getElementById("alwaysUse").getAttribute("checked"); - - let selectedItem = this._handlersList.selectedOptions[0]; - let subscribeCallback = () => { - let feedReader = null; - let settings = { - feedType, - useAsDefault, - // Pull the title and subtitle out of the document - feedTitle: this._document.getElementById(TITLE_ID).textContent, - feedSubtitle: this._document.getElementById(SUBTITLE_ID).textContent, - feedLocation: this._window.location.href - }; - if (selectedItem.hasAttribute("webhandlerurl")) { - feedReader = "web"; - settings.uri = selectedItem.getAttribute("webhandlerurl"); - } else { - switch (selectedItem.id) { - case "selectedAppMenuItem": - feedReader = "client"; - break; - case "defaultHandlerMenuItem": - feedReader = "default"; - break; - case "liveBookmarksMenuItem": - defaultHandler = "bookmarks"; - feedReader = "bookmarks"; - break; - } - } - settings.reader = feedReader; - - // If "Always use..." is checked, we should set PREF_*SELECTED_ACTION - // to either "reader" (If a web reader or if an application is selected), - // or to "bookmarks" (if the live bookmarks option is selected). - // Otherwise, we should set it to "ask" - if (!useAsDefault) { - defaultHandler = "ask"; - } - settings.action = defaultHandler; - LOG(`FeedWriter:SetFeedPrefsAndSubscribe - ${JSON.stringify(settings)}`); - this._mm.sendAsyncMessage("FeedWriter:SetFeedPrefsAndSubscribe", - settings); - } - - // Show the file picker before subscribing if the - // choose application menuitem was chosen using the keyboard - if (selectedItem.id == "chooseApplicationMenuItem") { - this._chooseClientApp(function(aResult) { - if (aResult) { - selectedItem = - this._handlersList.selectedOptions[0]; - subscribeCallback(); - } - }.bind(this)); - } else { - subscribeCallback(); - } - }, - - get _mm() { - let mm = this._window.QueryInterface(Ci.nsIInterfaceRequestor). - getInterface(Ci.nsIDocShell). - QueryInterface(Ci.nsIInterfaceRequestor). - getInterface(Ci.nsIContentFrameMessageManager); - delete this._mm; - return this._mm = mm; - }, - - classID: FEEDWRITER_CID, - QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMEventListener, Ci.nsIObserver, - Ci.nsINavHistoryObserver, - Ci.nsIDOMGlobalPropertyInitializer]) -}; - -this.NSGetFactory = XPCOMUtils.generateNSGetFactory([FeedWriter]); |