From 3a17b713ef27abb8c9d7c116815d3af7e0f366d9 Mon Sep 17 00:00:00 2001 From: wolfbeast Date: Fri, 6 Apr 2018 14:07:27 +0200 Subject: Remove about:home snippets. --- browser/base/content/abouthome/aboutHome.css | 59 +----- browser/base/content/abouthome/aboutHome.js | 280 ------------------------- browser/base/content/abouthome/aboutHome.xhtml | 11 - browser/base/content/tab-content.js | 5 +- 4 files changed, 2 insertions(+), 353 deletions(-) (limited to 'browser/base/content') diff --git a/browser/base/content/abouthome/aboutHome.css b/browser/base/content/abouthome/aboutHome.css index c0b02e257..bc3f9882c 100644 --- a/browser/base/content/abouthome/aboutHome.css +++ b/browser/base/content/abouthome/aboutHome.css @@ -49,8 +49,7 @@ a { background-repeat: no-repeat; } -#searchIconAndTextContainer, -#snippets { +#searchIconAndTextContainer { width: 470px; } @@ -168,48 +167,6 @@ a { transition-duration: 0ms; } -#defaultSnippet1, -#defaultSnippet2, -#rightsSnippet { - display: block; - min-height: 38px; - background: 0 center no-repeat; - padding: 6px 0; - padding-inline-start: 49px; -} - -#rightsSnippet[hidden] { - display: none; -} - -#defaultSnippet1:dir(rtl), -#defaultSnippet2:dir(rtl), -#rightsSnippet:dir(rtl) { - background-position: right 0 center; -} - -#defaultSnippet1 { - background-image: url("chrome://browser/content/abouthome/snippet1.png"); -} - -#defaultSnippet2 { - background-image: url("chrome://browser/content/abouthome/snippet2.png"); -} - -#snippets { - display: inline-block; - text-align: start; - margin: 12px 0; - color: #3c3c3c; - font-size: 75%; - /* 12px is the computed font size, 15px the computed line height of the snippets - with Segoe UI on a default Windows 7 setup. The 15/12 multiplier approximately - converts em from units of font-size to units of line-height. The goal is to - preset the height of a three-line snippet to avoid visual moving/flickering as - the snippets load. */ - min-height: calc(15/12 * 3em); -} - #launcher { display: -moz-box; -moz-box-align: center; @@ -385,20 +342,6 @@ body[narrow] #restorePreviousSession::before { background-image: url("chrome://branding/content/about-logo@2x.png"); } - #defaultSnippet1, - #defaultSnippet2, - #rightsSnippet { - background-size: 40px; - } - - #defaultSnippet1 { - background-image: url("chrome://browser/content/abouthome/snippet1@2x.png"); - } - - #defaultSnippet2 { - background-image: url("chrome://browser/content/abouthome/snippet2@2x.png"); - } - .launchButton::before, #aboutMozilla::before { transform: scale(.5); diff --git a/browser/base/content/abouthome/aboutHome.js b/browser/base/content/abouthome/aboutHome.js index 50f3e01cd..0cbcc835a 100644 --- a/browser/base/content/abouthome/aboutHome.js +++ b/browser/base/content/abouthome/aboutHome.js @@ -6,23 +6,10 @@ /* import-globals-from ../contentSearchUI.js */ -// The process of adding a new default snippet involves: -// * add a new entity to aboutHome.dtd -// * add a for it in aboutHome.xhtml -// * add an entry here in the proper ordering (based on spans) -// The part of the snippet will be linked to the corresponding url. -const DEFAULT_SNIPPETS_URLS = [ - "https://www.mozilla.org/firefox/features/?utm_source=snippet&utm_medium=snippet&utm_campaign=default+feature+snippet" -, "https://addons.mozilla.org/firefox/?utm_source=snippet&utm_medium=snippet&utm_campaign=addons" -]; - -const SNIPPETS_UPDATE_INTERVAL_MS = 14400000; // 4 hours. - // IndexedDB storage constants. const DATABASE_NAME = "abouthome"; const DATABASE_VERSION = 1; const DATABASE_STORAGE = "persistent"; -const SNIPPETS_OBJECTSTORE_NAME = "snippets"; var searchText; // This global tracks if the page has been set up before, to prevent double inits @@ -33,13 +20,6 @@ var gObserver = new MutationObserver(function (mutations) { if (mutation.attributeName == "session") { fitToWidth(); } - if (mutation.attributeName == "snippetsVersion") { - if (!gInitialized) { - ensureSnippetsMapThen(loadSnippets); - gInitialized = true; - } - return; - } } }); @@ -90,126 +70,6 @@ window.addEventListener("keypress", ev => { searchText.value += ev.key; }); -// This object has the same interface as Map and is used to store and retrieve -// the snippets data. It is lazily initialized by ensureSnippetsMapThen(), so -// be sure its callback returned before trying to use it. -var gSnippetsMap; -var gSnippetsMapCallbacks = []; - -/** - * Ensure the snippets map is properly initialized. - * - * @param aCallback - * Invoked once the map has been initialized, gets the map as argument. - * @note Snippets should never directly manage the underlying storage, since - * it may change inadvertently. - */ -function ensureSnippetsMapThen(aCallback) -{ - if (gSnippetsMap) { - aCallback(gSnippetsMap); - return; - } - - // Handle multiple requests during the async initialization. - gSnippetsMapCallbacks.push(aCallback); - if (gSnippetsMapCallbacks.length > 1) { - // We are already updating, the callbacks will be invoked when done. - return; - } - - let invokeCallbacks = function () { - if (!gSnippetsMap) { - gSnippetsMap = Object.freeze(new Map()); - } - - for (let callback of gSnippetsMapCallbacks) { - callback(gSnippetsMap); - } - gSnippetsMapCallbacks.length = 0; - } - - let openRequest = indexedDB.open(DATABASE_NAME, {version: DATABASE_VERSION, - storage: DATABASE_STORAGE}); - - openRequest.onerror = function (event) { - // Try to delete the old database so that we can start this process over - // next time. - indexedDB.deleteDatabase(DATABASE_NAME); - invokeCallbacks(); - }; - - openRequest.onupgradeneeded = function (event) { - let db = event.target.result; - if (!db.objectStoreNames.contains(SNIPPETS_OBJECTSTORE_NAME)) { - db.createObjectStore(SNIPPETS_OBJECTSTORE_NAME); - } - } - - openRequest.onsuccess = function (event) { - let db = event.target.result; - - db.onerror = function (event) { - invokeCallbacks(); - } - - db.onversionchange = function (event) { - event.target.close(); - invokeCallbacks(); - } - - let cache = new Map(); - let cursorRequest; - try { - cursorRequest = db.transaction(SNIPPETS_OBJECTSTORE_NAME) - .objectStore(SNIPPETS_OBJECTSTORE_NAME).openCursor(); - } catch (ex) { - console.error(ex); - invokeCallbacks(); - return; - } - - cursorRequest.onerror = function (event) { - invokeCallbacks(); - } - - cursorRequest.onsuccess = function(event) { - let cursor = event.target.result; - - // Populate the cache from the persistent storage. - if (cursor) { - cache.set(cursor.key, cursor.value); - cursor.continue(); - return; - } - - // The cache has been filled up, create the snippets map. - gSnippetsMap = Object.freeze({ - get: (aKey) => cache.get(aKey), - set: function (aKey, aValue) { - db.transaction(SNIPPETS_OBJECTSTORE_NAME, "readwrite") - .objectStore(SNIPPETS_OBJECTSTORE_NAME).put(aValue, aKey); - return cache.set(aKey, aValue); - }, - has: (aKey) => cache.has(aKey), - delete: function (aKey) { - db.transaction(SNIPPETS_OBJECTSTORE_NAME, "readwrite") - .objectStore(SNIPPETS_OBJECTSTORE_NAME).delete(aKey); - return cache.delete(aKey); - }, - clear: function () { - db.transaction(SNIPPETS_OBJECTSTORE_NAME, "readwrite") - .objectStore(SNIPPETS_OBJECTSTORE_NAME).clear(); - return cache.clear(); - }, - get size() { return cache.size; }, - }); - - setTimeout(invokeCallbacks, 0); - } - } -} - function onSearchSubmit(aEvent) { gContentSearchController.search(aEvent); @@ -246,146 +106,6 @@ function setupSearch() */ function loadCompleted() { - var event = new CustomEvent("AboutHomeLoadSnippetsCompleted", {bubbles:true}); - document.dispatchEvent(event); -} - -/** - * Update the local snippets from the remote storage, then show them through - * showSnippets. - */ -function loadSnippets() -{ - if (!gSnippetsMap) - throw new Error("Snippets map has not properly been initialized"); - - // Allow tests to modify the snippets map before using it. - var event = new CustomEvent("AboutHomeLoadSnippets", {bubbles:true}); - document.dispatchEvent(event); - - // Check cached snippets version. - let cachedVersion = gSnippetsMap.get("snippets-cached-version") || 0; - let currentVersion = document.documentElement.getAttribute("snippetsVersion"); - if (cachedVersion < currentVersion) { - // The cached snippets are old and unsupported, restart from scratch. - gSnippetsMap.clear(); - } - - // Check last snippets update. - let lastUpdate = gSnippetsMap.get("snippets-last-update"); - let updateURL = document.documentElement.getAttribute("snippetsURL"); - let shouldUpdate = !lastUpdate || - Date.now() - lastUpdate > SNIPPETS_UPDATE_INTERVAL_MS; - if (updateURL && shouldUpdate) { - // Try to update from network. - let xhr = new XMLHttpRequest(); - xhr.timeout = 5000; - // Even if fetching should fail we don't want to spam the server, thus - // set the last update time regardless its results. Will retry tomorrow. - gSnippetsMap.set("snippets-last-update", Date.now()); - xhr.onloadend = function (event) { - if (xhr.status == 200) { - gSnippetsMap.set("snippets", xhr.responseText); - gSnippetsMap.set("snippets-cached-version", currentVersion); - } - showSnippets(); - loadCompleted(); - }; - try { - xhr.open("GET", updateURL, true); - xhr.send(null); - } catch (ex) { - showSnippets(); - loadCompleted(); - return; - } - } else { - showSnippets(); - loadCompleted(); - } -} - -/** - * Shows locally cached remote snippets, or default ones when not available. - * - * @note: snippets should never invoke showSnippets(), or they may cause - * a "too much recursion" exception. - */ -var _snippetsShown = false; -function showSnippets() -{ - let snippetsElt = document.getElementById("snippets"); - - // Show about:rights notification, if needed. - let showRights = document.documentElement.getAttribute("showKnowYourRights"); - if (showRights) { - let rightsElt = document.getElementById("rightsSnippet"); - let anchor = rightsElt.getElementsByTagName("a")[0]; - anchor.href = "about:rights"; - snippetsElt.appendChild(rightsElt); - rightsElt.removeAttribute("hidden"); - return; - } - - if (!gSnippetsMap) - throw new Error("Snippets map has not properly been initialized"); - if (_snippetsShown) { - // There's something wrong with the remote snippets, just in case fall back - // to the default snippets. - showDefaultSnippets(); - throw new Error("showSnippets should never be invoked multiple times"); - } - _snippetsShown = true; - - let snippets = gSnippetsMap.get("snippets"); - // If there are remotely fetched snippets, try to to show them. - if (snippets) { - // Injecting snippets can throw if they're invalid XML. - try { - snippetsElt.innerHTML = snippets; - // Scripts injected by innerHTML are inactive, so we have to relocate them - // through DOM manipulation to activate their contents. - Array.forEach(snippetsElt.getElementsByTagName("script"), function(elt) { - let relocatedScript = document.createElement("script"); - relocatedScript.type = "text/javascript;version=1.8"; - relocatedScript.text = elt.text; - elt.parentNode.replaceChild(relocatedScript, elt); - }); - return; - } catch (ex) { - // Bad content, continue to show default snippets. - } - } - - showDefaultSnippets(); -} - -/** - * Clear snippets element contents and show default snippets. - */ -function showDefaultSnippets() -{ - // Clear eventual contents... - let snippetsElt = document.getElementById("snippets"); - snippetsElt.innerHTML = ""; - - // ...then show default snippets. - let defaultSnippetsElt = document.getElementById("defaultSnippets"); - let entries = defaultSnippetsElt.querySelectorAll("span"); - // Choose a random snippet. Assume there is always at least one. - let randIndex = Math.floor(Math.random() * entries.length); - let entry = entries[randIndex]; - // Inject url in the eventual link. - if (DEFAULT_SNIPPETS_URLS[randIndex]) { - let links = entry.getElementsByTagName("a"); - // Default snippets can have only one link, otherwise something is messed - // up in the translation. - if (links.length == 1) { - links[0].href = DEFAULT_SNIPPETS_URLS[randIndex]; - } - } - // Move the default snippet to the snippets element. - snippetsElt.appendChild(entry); } function fitToWidth() { diff --git a/browser/base/content/abouthome/aboutHome.xhtml b/browser/base/content/abouthome/aboutHome.xhtml index c288e732e..22bf2e7e8 100644 --- a/browser/base/content/abouthome/aboutHome.xhtml +++ b/browser/base/content/abouthome/aboutHome.xhtml @@ -46,15 +46,6 @@ - -
- - -
-
@@ -73,7 +64,5 @@
- diff --git a/browser/base/content/tab-content.js b/browser/base/content/tab-content.js index 05f8e00ab..7e803796a 100644 --- a/browser/base/content/tab-content.js +++ b/browser/base/content/tab-content.js @@ -147,13 +147,10 @@ var AboutHomeListener = { if (aData.showRestoreLastSession && !PrivateBrowsingUtils.isContentWindowPrivate(content)) doc.getElementById("launcher").setAttribute("session", "true"); - // Inject search engine and snippets URL. + // Inject search engine URL. let docElt = doc.documentElement; - // Set snippetsVersion last, which triggers to show the snippets when it's set. - docElt.setAttribute("snippetsURL", aData.snippetsURL); if (aData.showKnowYourRights) docElt.setAttribute("showKnowYourRights", "true"); - docElt.setAttribute("snippetsVersion", aData.snippetsVersion); }, onPageLoad: function() { -- cgit v1.2.3