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b6b202b6bb
The -*- file variable lines -*- establish per-file settings that Emacs will pick up. This patch makes the following changes to those lines (and touches nothing else): - Never set the buffer's mode. Years ago, Emacs did not have a good JavaScript mode, so it made sense to use Java or C++ mode in .js files. However, Emacs has had js-mode for years now; it's perfectly serviceable, and is available and enabled by default in all major Emacs packagings. Selecting a mode in the -*- file variable line -*- is almost always the wrong thing to do anyway. It overrides Emacs's default choice, which is (now) reasonable; and even worse, it overrides settings the user might have made in their '.emacs' file for that file extension. It's only useful when there's something specific about that particular file that makes a particular mode appropriate. - Correctly propagate settings that establish the correct indentation level for this file: c-basic-offset and js2-basic-offset should be js-indent-level. Whatever value they're given should be preserved; different parts of our tree use different indentation styles. - We don't use tabs in Mozilla JS code. Always set indent-tabs-mode: nil. Remove tab-width: settings, at least in files that don't contain tab characters. - Remove js2-mode settings that belong in the user's .emacs file, like js2-skip-preprocessor-directives.
172 lines
6.4 KiB
JavaScript
172 lines
6.4 KiB
JavaScript
# -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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/**
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* The Feed Handler object manages discovery of RSS/ATOM feeds in web pages
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* and shows UI when they are discovered.
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*/
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var FeedHandler = {
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/** Called when the user clicks on the Subscribe to This Page... menu item,
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* or when the user clicks the feed button when the page contains multiple
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* feeds.
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* Builds a menu of unique feeds associated with the page, and if there
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* is only one, shows the feed inline in the browser window.
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* @param container
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* The feed list container (menupopup or subview) to be populated.
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* @param isSubview
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* Whether we're creating a subview (true) or menu (false/undefined)
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* @returns true if the menu/subview should be shown, false if there was only
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* one feed and the feed should be shown inline in the browser
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* window (do not show the menupopup/subview).
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*/
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buildFeedList: function(container, isSubview) {
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var feeds = gBrowser.selectedBrowser.feeds;
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if (!isSubview && feeds == null) {
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// XXX hack -- menu opening depends on setting of an "open"
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// attribute, and the menu refuses to open if that attribute is
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// set (because it thinks it's already open). onpopupshowing gets
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// called after the attribute is unset, and it doesn't get unset
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// if we return false. so we unset it here; otherwise, the menu
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// refuses to work past this point.
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container.parentNode.removeAttribute("open");
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return false;
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}
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for (let i = container.childNodes.length - 1; i >= 0; --i) {
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let node = container.childNodes[i];
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if (isSubview && node.localName == "label")
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continue;
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container.removeChild(node);
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}
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if (!feeds || feeds.length <= 1)
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return false;
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// Build the menu showing the available feed choices for viewing.
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var itemNodeType = isSubview ? "toolbarbutton" : "menuitem";
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for (let feedInfo of feeds) {
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var item = document.createElement(itemNodeType);
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var baseTitle = feedInfo.title || feedInfo.href;
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var labelStr = gNavigatorBundle.getFormattedString("feedShowFeedNew", [baseTitle]);
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item.setAttribute("label", labelStr);
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item.setAttribute("feed", feedInfo.href);
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item.setAttribute("tooltiptext", feedInfo.href);
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item.setAttribute("crop", "center");
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let className = "feed-" + itemNodeType;
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if (isSubview) {
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className += " subviewbutton";
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}
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item.setAttribute("class", className);
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container.appendChild(item);
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}
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return true;
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},
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/**
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* Subscribe to a given feed. Called when
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* 1. Page has a single feed and user clicks feed icon in location bar
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* 2. Page has a single feed and user selects Subscribe menu item
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* 3. Page has multiple feeds and user selects from feed icon popup (or subview)
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* 4. Page has multiple feeds and user selects from Subscribe submenu
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* @param href
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* The feed to subscribe to. May be null, in which case the
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* event target's feed attribute is examined.
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* @param event
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* The event this method is handling. Used to decide where
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* to open the preview UI. (Optional, unless href is null)
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*/
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subscribeToFeed: function(href, event) {
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// Just load the feed in the content area to either subscribe or show the
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// preview UI
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if (!href)
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href = event.target.getAttribute("feed");
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urlSecurityCheck(href, gBrowser.contentPrincipal,
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Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
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var feedURI = makeURI(href, document.characterSet);
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// Use the feed scheme so X-Moz-Is-Feed will be set
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// The value doesn't matter
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if (/^https?$/.test(feedURI.scheme))
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href = "feed:" + href;
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this.loadFeed(href, event);
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},
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loadFeed: function(href, event) {
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var feeds = gBrowser.selectedBrowser.feeds;
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try {
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openUILink(href, event, { ignoreAlt: true });
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}
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finally {
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// We might default to a livebookmarks modal dialog,
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// so reset that if the user happens to click it again
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gBrowser.selectedBrowser.feeds = feeds;
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}
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},
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get _feedMenuitem() {
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delete this._feedMenuitem;
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return this._feedMenuitem = document.getElementById("singleFeedMenuitemState");
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},
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get _feedMenupopup() {
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delete this._feedMenupopup;
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return this._feedMenupopup = document.getElementById("multipleFeedsMenuState");
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},
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/**
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* Update the browser UI to show whether or not feeds are available when
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* a page is loaded or the user switches tabs to a page that has feeds.
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*/
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updateFeeds: function() {
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if (this._updateFeedTimeout)
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clearTimeout(this._updateFeedTimeout);
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var feeds = gBrowser.selectedBrowser.feeds;
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var haveFeeds = feeds && feeds.length > 0;
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var feedButton = document.getElementById("feed-button");
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if (feedButton) {
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if (haveFeeds) {
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feedButton.removeAttribute("disabled");
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} else {
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feedButton.setAttribute("disabled", "true");
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}
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}
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if (!haveFeeds) {
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this._feedMenuitem.setAttribute("disabled", "true");
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this._feedMenuitem.removeAttribute("hidden");
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this._feedMenupopup.setAttribute("hidden", "true");
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return;
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}
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if (feeds.length > 1) {
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this._feedMenuitem.setAttribute("hidden", "true");
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this._feedMenupopup.removeAttribute("hidden");
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} else {
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this._feedMenuitem.setAttribute("feed", feeds[0].href);
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this._feedMenuitem.removeAttribute("disabled");
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this._feedMenuitem.removeAttribute("hidden");
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this._feedMenupopup.setAttribute("hidden", "true");
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}
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},
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addFeed: function(link, browserForLink) {
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if (!browserForLink.feeds)
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browserForLink.feeds = [];
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browserForLink.feeds.push({ href: link.href, title: link.title });
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// If this addition was for the current browser, update the UI. For
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// background browsers, we'll update on tab switch.
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if (browserForLink == gBrowser.selectedBrowser) {
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// Batch updates to avoid updating the UI for multiple onLinkAdded events
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// fired within 100ms of each other.
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if (this._updateFeedTimeout)
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clearTimeout(this._updateFeedTimeout);
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this._updateFeedTimeout = setTimeout(this.updateFeeds.bind(this), 100);
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}
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}
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};
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