summaryrefslogtreecommitdiffstats
path: root/application/palemoon/components/feeds/FeedWriter.js
diff options
context:
space:
mode:
Diffstat (limited to 'application/palemoon/components/feeds/FeedWriter.js')
-rw-r--r--application/palemoon/components/feeds/FeedWriter.js1421
1 files changed, 1421 insertions, 0 deletions
diff --git a/application/palemoon/components/feeds/FeedWriter.js b/application/palemoon/components/feeds/FeedWriter.js
new file mode 100644
index 000000000..2afa35a5b
--- /dev/null
+++ b/application/palemoon/components/feeds/FeedWriter.js
@@ -0,0 +1,1421 @@
+# -*- 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");
+
+const FEEDWRITER_CID = Components.ID("{49bb6593-3aff-4eb3-a068-2712c28bd58e}");
+const FEEDWRITER_CONTRACTID = "@mozilla.org/browser/feeds/result-writer;1";
+
+function LOG(str) {
+ var prefB = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+
+ var 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) {
+ var 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 TYPE_MAYBE_FEED = "application/vnd.mozilla.maybe.feed";
+const TYPE_MAYBE_AUDIO_FEED = "application/vnd.mozilla.maybe.audio.feed";
+const TYPE_MAYBE_VIDEO_FEED = "application/vnd.mozilla.maybe.video.feed";
+const URI_BUNDLE = "chrome://browser/locale/feeds/subscribe.properties";
+
+const PREF_SELECTED_APP = "browser.feeds.handlers.application";
+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_VIDEO_SELECTED_APP = "browser.videoFeeds.handlers.application";
+const PREF_VIDEO_SELECTED_WEB = "browser.videoFeeds.handlers.webservice";
+const PREF_VIDEO_SELECTED_ACTION = "browser.videoFeeds.handler";
+const PREF_VIDEO_SELECTED_READER = "browser.videoFeeds.handler.default";
+
+const PREF_AUDIO_SELECTED_APP = "browser.audioFeeds.handlers.application";
+const PREF_AUDIO_SELECTED_WEB = "browser.audioFeeds.handlers.webservice";
+const PREF_AUDIO_SELECTED_ACTION = "browser.audioFeeds.handler";
+const PREF_AUDIO_SELECTED_READER = "browser.audioFeeds.handler.default";
+
+const PREF_SHOW_FIRST_RUN_UI = "browser.feeds.showFirstRunUI";
+
+const TITLE_ID = "feedTitleText";
+const SUBTITLE_ID = "feedSubtitleText";
+
+function getPrefAppForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_APP;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_APP;
+
+ default:
+ return PREF_SELECTED_APP;
+ }
+}
+
+function getPrefWebForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_WEB;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_WEB;
+
+ default:
+ return PREF_SELECTED_WEB;
+ }
+}
+
+function getPrefActionForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_ACTION;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_ACTION;
+
+ default:
+ return PREF_SELECTED_ACTION;
+ }
+}
+
+function getPrefReaderForType(t) {
+ switch (t) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return PREF_VIDEO_SELECTED_READER;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return PREF_AUDIO_SELECTED_READER;
+
+ default:
+ return PREF_SELECTED_READER;
+ }
+}
+
+/**
+ * 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) {
+ var 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() {}
+FeedWriter.prototype = {
+ _mimeSvc : Cc["@mozilla.org/mime;1"].
+ getService(Ci.nsIMIMEService),
+
+ _getPropertyAsBag: function FW__getPropertyAsBag(container, property) {
+ return container.fields.getProperty(property).
+ QueryInterface(Ci.nsIPropertyBag2);
+ },
+
+ _getPropertyAsString: function FW__getPropertyAsString(container, property) {
+ try {
+ return container.fields.getPropertyAsAString(property);
+ }
+ catch (e) {
+ }
+ return "";
+ },
+
+ _setContentText: function FW__setContentText(id, text) {
+ this._contentSandbox.element = this._document.getElementById(id);
+ this._contentSandbox.textNode = text.createDocumentFragment(this._contentSandbox.element);
+ var codeStr =
+ "while (element.hasChildNodes()) " +
+ " element.removeChild(element.firstChild);" +
+ "element.appendChild(textNode);";
+ if (text.base) {
+ this._contentSandbox.spec = text.base.spec;
+ codeStr += "element.setAttributeNS('" + XML_NS + "', 'base', spec);";
+ }
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ this._contentSandbox.element = null;
+ this._contentSandbox.textNode = null;
+ },
+
+ /**
+ * 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:
+ function FW__safeSetURIAttribute(element, attribute, uri) {
+ var secman = Cc["@mozilla.org/scriptsecuritymanager;1"].
+ getService(Ci.nsIScriptSecurityManager);
+ const flags = Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL;
+ try {
+ 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;
+ }
+
+ this._contentSandbox.element = element;
+ this._contentSandbox.uri = uri;
+ var codeStr = "element.setAttribute('" + attribute + "', uri);";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ /**
+ * Use this sandbox to run any dom manipulation code on nodes which
+ * are already inserted into the content document.
+ */
+ __contentSandbox: null,
+ get _contentSandbox() {
+ // This whole sandbox setup is totally archaic. It was introduced in bug
+ // 360529, presumably before the existence of a solid security membrane,
+ // since all of the manipulation of content here should be made safe by
+ // Xrays.
+ // Now that anonymous content is no longer content-accessible, manipulating
+ // the xml stylesheet content can't be done from content anymore.
+ //
+ // The right solution would be to rip out all of this sandbox junk and
+ // manipulate the DOM directly, but that would require a lot of rewriting.
+ // So, for now, we just give the sandbox an nsExpandedPrincipal with [].
+ // This has the effect of giving it Xrays, and making it same-origin with
+ // the XBL scope, thereby letting it manipulate anonymous content.
+ if (!this.__contentSandbox)
+ this.__contentSandbox = new Cu.Sandbox([this._window],
+ {sandboxName: 'FeedWriter'});
+
+ return this.__contentSandbox;
+ },
+
+ /**
+ * Calls doCommand for a given XUL element within the context of the
+ * content document.
+ *
+ * @param aElement
+ * the XUL element to call doCommand() on.
+ */
+ _safeDoCommand: function FW___safeDoCommand(aElement) {
+ this._contentSandbox.element = aElement;
+ Cu.evalInSandbox("element.doCommand();", this._contentSandbox);
+ this._contentSandbox.element = null;
+ },
+
+ __faviconService: null,
+ get _faviconService() {
+ if (!this.__faviconService)
+ this.__faviconService = Cc["@mozilla.org/browser/favicon-service;1"].
+ getService(Ci.nsIFaviconService);
+
+ return this.__faviconService;
+ },
+
+ __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: function FW__getFormattedString(key, params) {
+ return this._bundle.formatStringFromName(key, params, params.length);
+ },
+
+ _getString: function FW__getString(key) {
+ return this._bundle.GetStringFromName(key);
+ },
+
+ /* Magic helper methods to be used instead of xbl properties */
+ _getSelectedItemFromMenulist: function FW__getSelectedItemFromList(aList) {
+ var node = aList.firstChild.firstChild;
+ while (node) {
+ if (node.localName == "menuitem" && node.getAttribute("selected") == "true")
+ return node;
+
+ node = node.nextSibling;
+ }
+
+ return null;
+ },
+
+ _setCheckboxCheckedState: function FW__setCheckboxCheckedState(aCheckbox, aValue) {
+ // see checkbox.xml, xbl bindings are not applied within the sandbox!
+ this._contentSandbox.checkbox = aCheckbox;
+ var codeStr;
+ var change = (aValue != (aCheckbox.getAttribute('checked') == 'true'));
+ if (aValue)
+ codeStr = "checkbox.setAttribute('checked', 'true'); ";
+ else
+ codeStr = "checkbox.removeAttribute('checked'); ";
+
+ if (change) {
+ this._contentSandbox.document = this._document;
+ codeStr += "var event = document.createEvent('Events'); " +
+ "event.initEvent('CheckboxStateChange', true, true);" +
+ "checkbox.dispatchEvent(event);"
+ }
+
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ /**
+ * 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: function FW__parseDate(dateString) {
+ // Convert the date into the user's local time zone
+ dateObj = new Date(dateString);
+
+ // Make sure the date we're given is valid.
+ if (!dateObj.getTime())
+ return false;
+
+ var dateService = Cc["@mozilla.org/intl/scriptabledateformat;1"].
+ getService(Ci.nsIScriptableDateFormat);
+ return dateService.FormatDateTime("", dateService.dateFormatLong, dateService.timeFormatNoSeconds,
+ dateObj.getFullYear(), dateObj.getMonth()+1, dateObj.getDate(),
+ dateObj.getHours(), dateObj.getMinutes(), dateObj.getSeconds());
+ },
+
+ /**
+ * Returns the feed type.
+ */
+ __feedType: null,
+ _getFeedType: function FW__getFeedType() {
+ if (this.__feedType != null)
+ return this.__feedType;
+
+ try {
+ // grab the feed because it's got the feed.type in it.
+ var container = this._getContainer();
+ var feed = container.QueryInterface(Ci.nsIFeed);
+ this.__feedType = feed.type;
+ return feed.type;
+ } catch (ex) { }
+
+ return Ci.nsIFeed.TYPE_FEED;
+ },
+
+ /**
+ * Maps a feed type to a maybe-feed mimetype.
+ */
+ _getMimeTypeForFeedType: function FW__getMimeTypeForFeedType() {
+ switch (this._getFeedType()) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ return TYPE_MAYBE_VIDEO_FEED;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ return TYPE_MAYBE_AUDIO_FEED;
+
+ default:
+ return TYPE_MAYBE_FEED;
+ }
+ },
+
+ /**
+ * Writes the feed title into the preview document.
+ * @param container
+ * The feed container
+ */
+ _setTitleText: function FW__setTitleText(container) {
+ if (container.title) {
+ var title = container.title.plainText();
+ this._setContentText(TITLE_ID, container.title);
+ this._contentSandbox.document = this._document;
+ this._contentSandbox.title = title;
+ var codeStr = "document.title = title;"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ }
+
+ var 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: function FW__setTitleImage(container) {
+ try {
+ var parts = container.image;
+
+ // Set up the title image (supplied by the feed)
+ var feedTitleImage = this._document.getElementById("feedTitleImage");
+ this._safeSetURIAttribute(feedTitleImage, "src",
+ parts.getPropertyAsAString("url"));
+
+ // Set up the title image link
+ var feedTitleLink = this._document.getElementById("feedTitleLink");
+
+ var titleText = this._getFormattedString("linkTitleTextFormat",
+ [parts.getPropertyAsAString("title")]);
+ this._contentSandbox.feedTitleLink = feedTitleLink;
+ this._contentSandbox.titleText = titleText;
+ this._contentSandbox.feedTitleText = this._document.getElementById("feedTitleText");
+ this._contentSandbox.titleImageWidth = parseInt(parts.getPropertyAsAString("width")) + 15;
+
+ // Fix the margin on the main title, so that the image doesn't run over
+ // the underline
+ var codeStr = "feedTitleLink.setAttribute('title', titleText); " +
+ "feedTitleText.style.marginRight = titleImageWidth + 'px';";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ this._contentSandbox.feedTitleLink = null;
+ this._contentSandbox.titleText = null;
+ this._contentSandbox.feedTitleText = null;
+ this._contentSandbox.titleImageWidth = null;
+
+ 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: function FW__writeFeedContent(container) {
+ // Build the actual feed content
+ var feed = container.QueryInterface(Ci.nsIFeed);
+ if (feed.items.length == 0)
+ return;
+
+ this._contentSandbox.feedContent =
+ this._document.getElementById("feedContent");
+
+ for (var i = 0; i < feed.items.length; ++i) {
+ var entry = feed.items.queryElementAt(i, Ci.nsIFeedEntry);
+ entry.QueryInterface(Ci.nsIFeedContainer);
+
+ var entryContainer = this._document.createElementNS(HTML_NS, "div");
+ entryContainer.className = "entry";
+
+ // If the entry has a title, make it a link
+ if (entry.title) {
+ var a = this._document.createElementNS(HTML_NS, "a");
+ var 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);
+
+ var title = this._document.createElementNS(HTML_NS, "h3");
+ title.appendChild(a);
+
+ var lastUpdated = this._parseDate(entry.updated);
+ if (lastUpdated) {
+ var dateDiv = this._document.createElementNS(HTML_NS, "div");
+ dateDiv.className = "lastUpdated";
+ dateDiv.textContent = lastUpdated;
+ title.appendChild(dateDiv);
+ }
+
+ entryContainer.appendChild(title);
+ }
+
+ var body = this._document.createElementNS(HTML_NS, "div");
+ var summary = entry.summary || entry.content;
+ var 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) {
+ var 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) {
+ var enclosuresDiv = this._buildEnclosureDiv(entry);
+ entryContainer.appendChild(enclosuresDiv);
+ }
+
+ this._contentSandbox.entryContainer = entryContainer;
+ this._contentSandbox.clearDiv =
+ this._document.createElementNS(HTML_NS, "div");
+ this._contentSandbox.clearDiv.style.clear = "both";
+
+ var codeStr = "feedContent.appendChild(entryContainer); " +
+ "feedContent.appendChild(clearDiv);"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ }
+
+ this._contentSandbox.feedContent = null;
+ this._contentSandbox.entryContainer = null;
+ this._contentSandbox.clearDiv = null;
+ },
+
+ /**
+ * 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: function FW__getURLDisplayName(aURL) {
+ var 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: function FW__buildEnclosureDiv(entry) {
+ var enclosuresDiv = this._document.createElementNS(HTML_NS, "div");
+ enclosuresDiv.className = "enclosures";
+
+ enclosuresDiv.appendChild(this._document.createTextNode(this._getString("mediaLabel")));
+
+ var roundme = function(n) {
+ return (Math.round(n * 100) / 100).toLocaleString();
+ }
+
+ for (var i_enc = 0; i_enc < entry.enclosures.length; ++i_enc) {
+ var enc = entry.enclosures.queryElementAt(i_enc, Ci.nsIWritablePropertyBag2);
+
+ if (!(enc.hasKey("url")))
+ continue;
+
+ var enclosureDiv = this._document.createElementNS(HTML_NS, "div");
+ enclosureDiv.setAttribute("class", "enclosure");
+
+ var mozicon = "moz-icon://.txt?size=16";
+ var type_text = null;
+ var size_text = null;
+
+ if (enc.hasKey("type")) {
+ type_text = enc.get("type");
+ try {
+ var handlerInfoWrapper = this._mimeSvc.getFromTypeAndExtension(enc.get("type"), null);
+
+ if (handlerInfoWrapper)
+ type_text = handlerInfoWrapper.description;
+
+ if (type_text && type_text.length > 0)
+ mozicon = "moz-icon://goat?size=16&contentType=" + enc.get("type");
+
+ } catch (ex) { }
+
+ }
+
+ if (enc.hasKey("length") && /^[0-9]+$/.test(enc.get("length"))) {
+ var enc_size = convertByteUnits(parseInt(enc.get("length")));
+
+ var size_text = this._getFormattedString("enclosureSizeText",
+ [enc_size[0], this._getString(enc_size[1])]);
+ }
+
+ var iconimg = this._document.createElementNS(HTML_NS, "img");
+ iconimg.setAttribute("src", mozicon);
+ iconimg.setAttribute("class", "type-icon");
+ enclosureDiv.appendChild(iconimg);
+
+ enclosureDiv.appendChild(this._document.createTextNode( " " ));
+
+ var 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.
+ * @param result
+ * The parsed feed result
+ * @returns A valid nsIFeedContainer object containing the contents of
+ * the feed.
+ */
+ _getContainer: function FW__getContainer(result) {
+ var feedService =
+ Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+
+ result = null;
+ try {
+ result =
+ feedService.getFeedResult(this._getOriginalURI(this._window));
+ }
+ catch (e) {
+ // Ignore.
+ }
+
+ if (!result) {
+ LOG("Subscribe Preview: feed not available?!");
+ return null;
+ }
+
+ if (result.bozo) {
+ LOG("Subscribe Preview: feed result is bozo?!");
+ }
+
+ try {
+ var container = result.doc;
+ }
+ catch (e) {
+ LOG("Subscribe Preview: no result.doc? Why didn't the original reload?");
+ return null;
+ }
+ return container;
+ },
+
+ /**
+ * Get the human-readable display name of a file. This could be the
+ * application name.
+ * @param file
+ * A nsIFile to look up the name of
+ * @returns The display name of the application represented by the file.
+ */
+ _getFileDisplayName: function FW__getFileDisplayName(file) {
+#ifdef XP_WIN
+ if (file instanceof Ci.nsILocalFileWin) {
+ try {
+ return file.getVersionInfoField("FileDescription");
+ } catch (e) {}
+ }
+#endif
+#ifdef XP_MACOSX
+ if (file instanceof Ci.nsILocalFileMac) {
+ try {
+ return file.bundleDisplayName;
+ } catch (e) {}
+ }
+#endif
+ return file.leafName;
+ },
+
+ /**
+ * 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: function FW__getFileIconURL(file) {
+ var ios = Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService);
+ var fph = ios.getProtocolHandler("file")
+ .QueryInterface(Ci.nsIFileProtocolHandler);
+ var urlSpec = fph.getURLSpecFromFile(file);
+ return "moz-icon://" + urlSpec + "?size=16";
+ },
+
+ /**
+ * Helper method to set the selected application and system default
+ * reader menuitems details from a file object
+ * @param aMenuItem
+ * The menuitem on which the attributes should be set
+ * @param aFile
+ * The menuitem's associated file
+ */
+ _initMenuItemWithFile: function(aMenuItem, aFile) {
+ this._contentSandbox.menuitem = aMenuItem;
+ this._contentSandbox.label = this._getFileDisplayName(aFile);
+ this._contentSandbox.image = this._getFileIconURL(aFile);
+ var codeStr = "menuitem.setAttribute('label', label); " +
+ "menuitem.setAttribute('image', image);"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ /**
+ * Helper method to get an element in the XBL binding where the handler
+ * selection UI lives
+ */
+ _getUIElement: function FW__getUIElement(id) {
+ return this._document.getAnonymousElementByAttribute(
+ this._document.getElementById("feedSubscribeLine"), "anonid", id);
+ },
+
+ /**
+ * 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: function FW__chooseClientApp(aCallback) {
+ try {
+ let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
+ let fpCallback = function fpCallback_done(aResult) {
+ if (aResult == Ci.nsIFilePicker.returnOK) {
+ this._selectedApp = fp.file;
+ if (this._selectedApp) {
+ // XXXben - we need to compare this with the running instance
+ // executable just don't know how to do that via script
+ // XXXmano TBD: can probably add this to nsIShellService
+#ifdef XP_WIN
+#expand if (fp.file.leafName != "__MOZ_APP_NAME__.exe") {
+#else
+#ifdef XP_MACOSX
+#expand if (fp.file.leafName != "__MOZ_MACBUNDLE_NAME__") {
+#else
+#expand if (fp.file.leafName != "__MOZ_APP_NAME__-bin") {
+#endif
+#endif
+ this._initMenuItemWithFile(this._contentSandbox.selectedAppMenuItem,
+ this._selectedApp);
+
+ // Show and select the selected application menuitem
+ let codeStr = "selectedAppMenuItem.hidden = false;" +
+ "selectedAppMenuItem.doCommand();"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ if (aCallback) {
+ aCallback(true);
+ return;
+ }
+ }
+ }
+ }
+ if (aCallback) {
+ aCallback(false);
+ }
+ }.bind(this);
+
+ fp.init(this._window, this._getString("chooseApplicationDialogTitle"),
+ Ci.nsIFilePicker.modeOpen);
+ fp.appendFilters(Ci.nsIFilePicker.filterApps);
+ fp.open(fpCallback);
+ } catch(ex) {
+ }
+ },
+
+ _setAlwaysUseCheckedState: function FW__setAlwaysUseCheckedState(feedType) {
+ var checkbox = this._getUIElement("alwaysUse");
+ if (checkbox) {
+ var alwaysUse = false;
+ try {
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ if (prefs.getCharPref(getPrefActionForType(feedType)) != "ask")
+ alwaysUse = true;
+ }
+ catch(ex) { }
+ this._setCheckboxCheckedState(checkbox, alwaysUse);
+ }
+ },
+
+ _setSubscribeUsingLabel: function FW__setSubscribeUsingLabel() {
+ var stringLabel = "subscribeFeedUsing";
+ switch (this._getFeedType()) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ stringLabel = "subscribeVideoPodcastUsing";
+ break;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ stringLabel = "subscribeAudioPodcastUsing";
+ break;
+ }
+
+ this._contentSandbox.subscribeUsing =
+ this._getUIElement("subscribeUsingDescription");
+ this._contentSandbox.label = this._getString(stringLabel);
+ var codeStr = "subscribeUsing.setAttribute('value', label);"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ },
+
+ _setAlwaysUseLabel: function FW__setAlwaysUseLabel() {
+ var checkbox = this._getUIElement("alwaysUse");
+ if (checkbox) {
+ if (this._handlersMenuList) {
+ var handlerName = this._getSelectedItemFromMenulist(this._handlersMenuList)
+ .getAttribute("label");
+ var stringLabel = "alwaysUseForFeeds";
+ switch (this._getFeedType()) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ stringLabel = "alwaysUseForVideoPodcasts";
+ break;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ stringLabel = "alwaysUseForAudioPodcasts";
+ break;
+ }
+
+ this._contentSandbox.checkbox = checkbox;
+ this._contentSandbox.label = this._getFormattedString(stringLabel, [handlerName]);
+
+ var codeStr = "checkbox.setAttribute('label', label);";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ }
+ }
+ },
+
+ // nsIDomEventListener
+ handleEvent: function(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;
+ }
+
+ if (event.type == "command") {
+ switch (event.target.getAttribute("anonid")) {
+ case "subscribeButton":
+ this.subscribe();
+ break;
+ case "chooseApplicationMenuItem":
+ /* Bug 351263: Make sure to not steal focus if the "Choose
+ * Application" item is being selected with the keyboard. We do this
+ * by ignoring command events while the dropdown is closed (user
+ * arrowing through the combobox), but handling them while the
+ * combobox dropdown is open (user pressed enter when an item was
+ * selected). If we don't show the filepicker here, it will be shown
+ * when clicking "Subscribe Now".
+ */
+ var popupbox = this._handlersMenuList.firstChild.boxObject;
+ if (popupbox.popupState == "hiding") {
+ this._chooseClientApp(function(aResult) {
+ if (!aResult) {
+ // Select the (per-prefs) selected handler if no application
+ // was selected
+ this._setSelectedHandler(this._getFeedType());
+ }
+ }.bind(this));
+ }
+ break;
+ default:
+ this._setAlwaysUseLabel();
+ }
+ }
+ },
+
+ _setSelectedHandler: function FW__setSelectedHandler(feedType) {
+ var prefs =
+ Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+
+ var handler = "bookmarks";
+ try {
+ handler = prefs.getCharPref(getPrefReaderForType(feedType));
+ }
+ catch (ex) { }
+
+ switch (handler) {
+ case "web": {
+ if (this._handlersMenuList) {
+ var url;
+ try {
+ url = prefs.getComplexValue(getPrefWebForType(feedType), Ci.nsISupportsString).data;
+ } catch (ex) {
+ LOG("FeedWriter._setSelectedHandler: invalid or no handler in prefs");
+ return;
+ }
+ var handlers =
+ this._handlersMenuList.getElementsByAttribute("webhandlerurl", url);
+ if (handlers.length == 0) {
+ LOG("FeedWriter._setSelectedHandler: selected web handler isn't in the menulist")
+ return;
+ }
+
+ this._safeDoCommand(handlers[0]);
+ }
+ break;
+ }
+ case "client": {
+ try {
+ this._selectedApp =
+ prefs.getComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile);
+ }
+ catch(ex) {
+ this._selectedApp = null;
+ }
+
+ if (this._selectedApp) {
+ this._initMenuItemWithFile(this._contentSandbox.selectedAppMenuItem,
+ this._selectedApp);
+ var codeStr = "selectedAppMenuItem.hidden = false; " +
+ "selectedAppMenuItem.doCommand(); ";
+
+ // Only show the default reader menuitem if the default reader
+ // isn't the selected application
+ if (this._defaultSystemReader) {
+ var shouldHide =
+ this._defaultSystemReader.path == this._selectedApp.path;
+ codeStr += "defaultHandlerMenuItem.hidden = " + shouldHide + ";"
+ }
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ break;
+ }
+ }
+ case "bookmarks":
+ default: {
+ var liveBookmarksMenuItem = this._getUIElement("liveBookmarksMenuItem");
+ if (liveBookmarksMenuItem)
+ this._safeDoCommand(liveBookmarksMenuItem);
+ }
+ }
+ },
+
+ _initSubscriptionUI: function FW__initSubscriptionUI() {
+ var handlersMenuPopup = this._getUIElement("handlersMenuPopup");
+ if (!handlersMenuPopup)
+ return;
+
+ var feedType = this._getFeedType();
+ var codeStr;
+
+ // change the background
+ var header = this._document.getElementById("feedHeader");
+ this._contentSandbox.header = header;
+ switch (feedType) {
+ case Ci.nsIFeed.TYPE_VIDEO:
+ codeStr = "header.className = 'videoPodcastBackground'; ";
+ break;
+
+ case Ci.nsIFeed.TYPE_AUDIO:
+ codeStr = "header.className = 'audioPodcastBackground'; ";
+ break;
+
+ default:
+ codeStr = "header.className = 'feedBackground'; ";
+ }
+
+ var liveBookmarksMenuItem = this._getUIElement("liveBookmarksMenuItem");
+
+ // Last-selected application
+ var menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.setAttribute("anonid", "selectedAppMenuItem");
+ menuItem.className = "menuitem-iconic selectedAppMenuItem";
+ menuItem.setAttribute("handlerType", "client");
+ try {
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ this._selectedApp = prefs.getComplexValue(getPrefAppForType(feedType),
+ Ci.nsILocalFile);
+
+ if (this._selectedApp.exists())
+ this._initMenuItemWithFile(menuItem, this._selectedApp);
+ else {
+ // Hide the menuitem if the last selected application doesn't exist
+ menuItem.setAttribute("hidden", true);
+ }
+ }
+ catch(ex) {
+ // Hide the menuitem until an application is selected
+ menuItem.setAttribute("hidden", true);
+ }
+ this._contentSandbox.handlersMenuPopup = handlersMenuPopup;
+ this._contentSandbox.selectedAppMenuItem = menuItem;
+
+ codeStr += "handlersMenuPopup.appendChild(selectedAppMenuItem); ";
+
+ // List the default feed reader
+ try {
+ this._defaultSystemReader = Cc["@mozilla.org/browser/shell-service;1"].
+ getService(Ci.nsIShellService).
+ defaultFeedReader;
+ menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.setAttribute("anonid", "defaultHandlerMenuItem");
+ menuItem.className = "menuitem-iconic defaultHandlerMenuItem";
+ menuItem.setAttribute("handlerType", "client");
+
+ this._initMenuItemWithFile(menuItem, this._defaultSystemReader);
+
+ // Hide the default reader item if it points to the same application
+ // as the last-selected application
+ if (this._selectedApp &&
+ this._selectedApp.path == this._defaultSystemReader.path)
+ menuItem.hidden = true;
+ }
+ catch(ex) { menuItem = null; /* no default reader */ }
+
+ if (menuItem) {
+ this._contentSandbox.defaultHandlerMenuItem = menuItem;
+ codeStr += "handlersMenuPopup.appendChild(defaultHandlerMenuItem); ";
+ }
+
+ // "Choose Application..." menuitem
+ menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.setAttribute("anonid", "chooseApplicationMenuItem");
+ menuItem.className = "menuitem-iconic chooseApplicationMenuItem";
+ menuItem.setAttribute("label", this._getString("chooseApplicationMenuItem"));
+
+ this._contentSandbox.chooseAppMenuItem = menuItem;
+ codeStr += "handlersMenuPopup.appendChild(chooseAppMenuItem); ";
+
+ // separator
+ this._contentSandbox.chooseAppSep =
+ menuItem = liveBookmarksMenuItem.nextSibling.cloneNode(false);
+ codeStr += "handlersMenuPopup.appendChild(chooseAppSep); ";
+
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+
+ // List of web handlers
+ var wccr = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+ getService(Ci.nsIWebContentConverterService);
+ var handlers = wccr.getContentHandlers(this._getMimeTypeForFeedType(feedType));
+ if (handlers.length != 0) {
+ for (var i = 0; i < handlers.length; ++i) {
+ if (!handlers[i].uri) {
+ LOG("Handler with name " + handlers[i].name + " has no URI!? Skipping...");
+ continue;
+ }
+ menuItem = liveBookmarksMenuItem.cloneNode(false);
+ menuItem.removeAttribute("selected");
+ menuItem.className = "menuitem-iconic";
+ menuItem.setAttribute("label", handlers[i].name);
+ menuItem.setAttribute("handlerType", "web");
+ menuItem.setAttribute("webhandlerurl", handlers[i].uri);
+ this._contentSandbox.menuItem = menuItem;
+ codeStr = "handlersMenuPopup.appendChild(menuItem);";
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+
+ this._setFaviconForWebReader(handlers[i].uri, menuItem);
+ }
+ this._contentSandbox.menuItem = null;
+ }
+
+ this._setSelectedHandler(feedType);
+
+ // "Subscribe using..."
+ this._setSubscribeUsingLabel();
+
+ // "Always use..." checkbox initial state
+ this._setAlwaysUseCheckedState(feedType);
+ this._setAlwaysUseLabel();
+
+ // We update the "Always use.." checkbox label whenever the selected item
+ // in the list is changed
+ handlersMenuPopup.addEventListener("command", this, false);
+
+ // Set up the "Subscribe Now" button
+ this._getUIElement("subscribeButton")
+ .addEventListener("command", this, false);
+
+ // first-run ui
+ var showFirstRunUI = true;
+ try {
+ showFirstRunUI = prefs.getBoolPref(PREF_SHOW_FIRST_RUN_UI);
+ }
+ catch (ex) { }
+ if (showFirstRunUI) {
+ var 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";
+ }
+
+ this._contentSandbox.feedinfo1 =
+ this._document.getElementById("feedSubscriptionInfo1");
+ this._contentSandbox.feedinfo1Str = this._getString(textfeedinfo1);
+ this._contentSandbox.feedinfo2 =
+ this._document.getElementById("feedSubscriptionInfo2");
+ this._contentSandbox.feedinfo2Str = this._getString(textfeedinfo2);
+ this._contentSandbox.header = header;
+ codeStr = "feedinfo1.textContent = feedinfo1Str; " +
+ "feedinfo2.textContent = feedinfo2Str; " +
+ "header.setAttribute('firstrun', 'true');"
+ Cu.evalInSandbox(codeStr, this._contentSandbox);
+ prefs.setBoolPref(PREF_SHOW_FIRST_RUN_UI, false);
+ }
+ },
+
+ /**
+ * 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: function FW__getOriginalURI(aWindow) {
+ var chan = aWindow.QueryInterface(Ci.nsIInterfaceRequestor).
+ getInterface(Ci.nsIWebNavigation).
+ QueryInterface(Ci.nsIDocShell).currentDocumentChannel;
+
+ var nullPrincipal = Cc["@mozilla.org/nullprincipal;1"].
+ createInstance(Ci.nsIPrincipal);
+
+ var resolvedURI = Cc["@mozilla.org/network/io-service;1"].
+ getService(Ci.nsIIOService).
+ newChannel2("about:feeds",
+ null,
+ null,
+ null, // aLoadingNode
+ nullPrincipal,
+ null, // aTriggeringPrincipal
+ Ci.nsILoadInfo.SEC_NORMAL,
+ Ci.nsIContentPolicy.TYPE_OTHER).URI;
+
+ if (resolvedURI.equals(chan.URI))
+ return chan.originalURI;
+
+ return null;
+ },
+
+ _window: null,
+ _document: null,
+ _feedURI: null,
+ _feedPrincipal: null,
+ _handlersMenuList: null,
+
+ // BrowserFeedWriter WebIDL methods
+ init: function FW_init(aWindow) {
+ var window = aWindow;
+ this._feedURI = this._getOriginalURI(window);
+ if (!this._feedURI)
+ return;
+
+ this._window = window;
+ this._document = window.document;
+ this._document.getElementById("feedSubscribeLine").offsetTop;
+ this._handlersMenuList = this._getUIElement("handlersMenuList");
+
+ var secman = Cc["@mozilla.org/scriptsecuritymanager;1"].
+ getService(Ci.nsIScriptSecurityManager);
+ this._feedPrincipal = secman.getSimpleCodebasePrincipal(this._feedURI);
+
+ LOG("Subscribe Preview: feed uri = " + this._window.location.href);
+
+ // Set up the subscription UI
+ this._initSubscriptionUI();
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ prefs.addObserver(PREF_SELECTED_ACTION, this, false);
+ prefs.addObserver(PREF_SELECTED_READER, this, false);
+ prefs.addObserver(PREF_SELECTED_WEB, this, false);
+ prefs.addObserver(PREF_SELECTED_APP, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_ACTION, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_READER, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_WEB, this, false);
+ prefs.addObserver(PREF_VIDEO_SELECTED_APP, this, false);
+
+ prefs.addObserver(PREF_AUDIO_SELECTED_ACTION, this, false);
+ prefs.addObserver(PREF_AUDIO_SELECTED_READER, this, false);
+ prefs.addObserver(PREF_AUDIO_SELECTED_WEB, this, false);
+ prefs.addObserver(PREF_AUDIO_SELECTED_APP, this, false);
+ },
+
+ writeContent: function FW_writeContent() {
+ if (!this._window)
+ return;
+
+ try {
+ // Set up the feed content
+ var container = this._getContainer();
+ if (!container)
+ return;
+
+ this._setTitleText(container);
+ this._setTitleImage(container);
+ this._writeFeedContent(container);
+ }
+ finally {
+ this._removeFeedFromCache();
+ }
+ },
+
+ close: function FW_close() {
+ this._getUIElement("handlersMenuPopup")
+ .removeEventListener("command", this, false);
+ this._getUIElement("subscribeButton")
+ .removeEventListener("command", this, false);
+ this._document = null;
+ this._window = null;
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ prefs.removeObserver(PREF_SELECTED_ACTION, this);
+ prefs.removeObserver(PREF_SELECTED_READER, this);
+ prefs.removeObserver(PREF_SELECTED_WEB, this);
+ prefs.removeObserver(PREF_SELECTED_APP, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_ACTION, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_READER, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_WEB, this);
+ prefs.removeObserver(PREF_VIDEO_SELECTED_APP, this);
+
+ prefs.removeObserver(PREF_AUDIO_SELECTED_ACTION, this);
+ prefs.removeObserver(PREF_AUDIO_SELECTED_READER, this);
+ prefs.removeObserver(PREF_AUDIO_SELECTED_WEB, this);
+ prefs.removeObserver(PREF_AUDIO_SELECTED_APP, this);
+
+ this._removeFeedFromCache();
+ this.__faviconService = null;
+ this.__bundle = null;
+ this._feedURI = null;
+ this.__contentSandbox = null;
+ },
+
+ _removeFeedFromCache: function FW__removeFeedFromCache() {
+ if (this._feedURI) {
+ var feedService = Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+ feedService.removeFeedResult(this._feedURI);
+ this._feedURI = null;
+ }
+ },
+
+ subscribe: function FW_subscribe() {
+ var feedType = this._getFeedType();
+
+ // Subscribe to the feed using the selected handler and save prefs
+ var prefs = Cc["@mozilla.org/preferences-service;1"].
+ getService(Ci.nsIPrefBranch);
+ var defaultHandler = "reader";
+ var useAsDefault = this._getUIElement("alwaysUse").getAttribute("checked");
+
+ var selectedItem = this._getSelectedItemFromMenulist(this._handlersMenuList);
+ let subscribeCallback = function() {
+ if (selectedItem.hasAttribute("webhandlerurl")) {
+ var webURI = selectedItem.getAttribute("webhandlerurl");
+ prefs.setCharPref(getPrefReaderForType(feedType), "web");
+
+ var supportsString = Cc["@mozilla.org/supports-string;1"].
+ createInstance(Ci.nsISupportsString);
+ supportsString.data = webURI;
+ prefs.setComplexValue(getPrefWebForType(feedType), Ci.nsISupportsString,
+ supportsString);
+
+ var wccr = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+ getService(Ci.nsIWebContentConverterService);
+ var handler = wccr.getWebContentHandlerByURI(this._getMimeTypeForFeedType(feedType), webURI);
+ if (handler) {
+ if (useAsDefault) {
+ wccr.setAutoHandler(this._getMimeTypeForFeedType(feedType), handler);
+ }
+
+ this._window.location.href = handler.getHandlerURI(this._window.location.href);
+ }
+ } else {
+ switch (selectedItem.getAttribute("anonid")) {
+ case "selectedAppMenuItem":
+ prefs.setComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile,
+ this._selectedApp);
+ prefs.setCharPref(getPrefReaderForType(feedType), "client");
+ break;
+ case "defaultHandlerMenuItem":
+ prefs.setComplexValue(getPrefAppForType(feedType), Ci.nsILocalFile,
+ this._defaultSystemReader);
+ prefs.setCharPref(getPrefReaderForType(feedType), "client");
+ break;
+ case "liveBookmarksMenuItem":
+ defaultHandler = "bookmarks";
+ prefs.setCharPref(getPrefReaderForType(feedType), "bookmarks");
+ break;
+ }
+ var feedService = Cc["@mozilla.org/browser/feeds/result-service;1"].
+ getService(Ci.nsIFeedResultService);
+
+ // Pull the title and subtitle out of the document
+ var feedTitle = this._document.getElementById(TITLE_ID).textContent;
+ var feedSubtitle = this._document.getElementById(SUBTITLE_ID).textContent;
+ feedService.addToClientReader(this._window.location.href, feedTitle, feedSubtitle, feedType);
+ }
+
+ // 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) {
+ prefs.setCharPref(getPrefActionForType(feedType), defaultHandler);
+ } else {
+ prefs.setCharPref(getPrefActionForType(feedType), "ask");
+ }
+ }.bind(this);
+
+ // Show the file picker before subscribing if the
+ // choose application menuitem was chosen using the keyboard
+ if (selectedItem.getAttribute("anonid") == "chooseApplicationMenuItem") {
+ this._chooseClientApp(function(aResult) {
+ if (aResult) {
+ selectedItem =
+ this._getSelectedItemFromMenulist(this._handlersMenuList);
+ subscribeCallback();
+ }
+ }.bind(this));
+ } else {
+ subscribeCallback();
+ }
+ },
+
+ // nsIObserver
+ observe: function FW_observe(subject, topic, data) {
+ if (!this._window) {
+ // this._window is null unless this.init was called with a trusted
+ // window object.
+ return;
+ }
+
+ var feedType = this._getFeedType();
+
+ if (topic == "nsPref:changed") {
+ switch (data) {
+ case PREF_SELECTED_READER:
+ case PREF_SELECTED_WEB:
+ case PREF_SELECTED_APP:
+ case PREF_VIDEO_SELECTED_READER:
+ case PREF_VIDEO_SELECTED_WEB:
+ case PREF_VIDEO_SELECTED_APP:
+ case PREF_AUDIO_SELECTED_READER:
+ case PREF_AUDIO_SELECTED_WEB:
+ case PREF_AUDIO_SELECTED_APP:
+ this._setSelectedHandler(feedType);
+ break;
+ case PREF_SELECTED_ACTION:
+ case PREF_VIDEO_SELECTED_ACTION:
+ case PREF_AUDIO_SELECTED_ACTION:
+ this._setAlwaysUseCheckedState(feedType);
+ }
+ }
+ },
+
+ /**
+ * Sets the icon for the given web-reader item in the readers menu.
+ * The icon is fetched and stored through the favicon service.
+ *
+ * @param aReaderUrl
+ * the reader url.
+ * @param aMenuItem
+ * the reader item in the readers menulist.
+ *
+ * @note For privacy reasons we cannot set the image attribute directly
+ * to the icon url. See Bug 358878 for details.
+ */
+ _setFaviconForWebReader:
+ function FW__setFaviconForWebReader(aReaderUrl, aMenuItem) {
+ var readerURI = makeURI(aReaderUrl);
+ if (!/^https?$/.test(readerURI.scheme)) {
+ // Don't try to get a favicon for non http(s) URIs.
+ return;
+ }
+ var faviconURI = makeURI(readerURI.prePath + "/favicon.ico");
+ var self = this;
+ var usePrivateBrowsing = this._window.QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIWebNavigation)
+ .QueryInterface(Ci.nsIDocShell)
+ .QueryInterface(Ci.nsILoadContext)
+ .usePrivateBrowsing;
+ this._faviconService.setAndFetchFaviconForPage(readerURI, faviconURI, false,
+ usePrivateBrowsing ? this._faviconService.FAVICON_LOAD_PRIVATE
+ : this._faviconService.FAVICON_LOAD_NON_PRIVATE,
+ function (aURI, aDataLen, aData, aMimeType) {
+ if (aDataLen > 0) {
+ var dataURL = "data:" + aMimeType + ";base64," +
+ btoa(String.fromCharCode.apply(null, aData));
+ self._contentSandbox.menuItem = aMenuItem;
+ self._contentSandbox.dataURL = dataURL;
+ var codeStr = "menuItem.setAttribute('image', dataURL);";
+ Cu.evalInSandbox(codeStr, self._contentSandbox);
+ self._contentSandbox.menuItem = null;
+ self._contentSandbox.dataURL = null;
+ }
+ });
+ },
+
+ classID: FEEDWRITER_CID,
+ QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMEventListener, Ci.nsIObserver,
+ Ci.nsINavHistoryObserver,
+ Ci.nsIDOMGlobalPropertyInitializer])
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([FeedWriter]);