Generalize data directory

25 files changed, 1037 insertions, 0 deletions

diff --git a/data/abouthome/aboutHome.css b/data/abouthome/aboutHome.css
new file mode 100644
index 0000000..8635239
--- /dev/null
+++ b/data/abouthome/aboutHome.css
@@ -0,0 +1,429 @@
+%if 0
+/* 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/. */
+%endif
+
+html {
+  font: message-box;
+  font-size: 100%;
+  background-color: hsl(0,0%,95%);
+  color: #000;
+  height: 100%;
+}
+
+body {
+  margin: 0;
+  display: -moz-box;
+  -moz-box-orient: vertical;
+  width: 100%;
+  height: 100%;
+}
+
+input,
+button {
+  font-size: inherit;
+  font-family: inherit;
+}
+
+a {
+  color: -moz-nativehyperlinktext;
+  text-decoration: none;
+}
+
+.spacer {
+  -moz-box-flex: 1;
+}
+
+#topSection {
+  text-align: center;
+}
+
+#brandLogo {
+  height: 420px;
+  width: 150px;
+  margin: 22px auto 31px;
+  background-image: url("chrome://branding/content/about-logo.png");
+  background-size: 420px 150px;
+  background-position: center center;
+  background-repeat: no-repeat;
+}
+
+#searchForm,
+#snippets {
+  width: 470px;
+}
+
+#searchForm {
+  display: -moz-box;
+}
+
+#searchLogoContainer {
+  display: -moz-box;
+  -moz-box-align: center;
+  padding-top: 2px;
+  -moz-padding-end: 8px;
+}
+
+#searchLogoContainer[hidden] {
+  display: none;
+}
+
+#searchEngineLogo {
+  display: inline-block;
+  height: 28px;
+  width: 70px;
+  min-width: 70px;
+}
+
+#searchText {
+  -moz-box-flex: 1;
+  padding: 6px 8px;
+  background: hsla(0,0%,100%,.9) padding-box;
+  border: 1px solid;
+  border-color: hsla(210,54%,20%,.15) hsla(210,54%,20%,.17) hsla(210,54%,20%,.2);
+  box-shadow: 0 1px 0 hsla(210,65%,9%,.02) inset,
+              0 0 2px hsla(210,65%,9%,.1) inset,
+              0 1px 0 hsla(0,0%,100%,.2);
+  border-radius: 2.5px 0 0 2.5px;
+}
+
+#searchText:-moz-dir(rtl) {
+  border-radius: 0 2.5px 2.5px 0;
+}
+
+#searchText:focus,
+#searchText[autofocus] {
+  border-color: hsla(206,100%,60%,.6) hsla(206,76%,52%,.6) hsla(204,100%,40%,.6);
+}
+
+#searchSubmit {
+  -moz-margin-start: -1px;
+  background: linear-gradient(hsla(0,0%,100%,.8), hsla(0,0%,100%,.1)) padding-box;
+  padding: 0 9px;
+  border: 1px solid;
+  border-color: hsla(210,54%,20%,.15) hsla(210,54%,20%,.17) hsla(210,54%,20%,.2);
+  -moz-border-start: 1px solid transparent;
+  border-radius: 0 2.5px 2.5px 0;
+  box-shadow: 0 0 2px hsla(0,0%,100%,.5) inset,
+              0 1px 0 hsla(0,0%,100%,.2);
+  cursor: pointer;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+}
+
+#searchSubmit:-moz-dir(rtl) {
+  border-radius: 2.5px 0 0 2.5px;
+}
+
+#searchText:focus + #searchSubmit,
+#searchText + #searchSubmit:hover,
+#searchText[autofocus] + #searchSubmit {
+  border-color: #59b5fc #45a3e7 #3294d5;
+  color: white;
+}
+
+#searchText:focus + #searchSubmit,
+#searchText[autofocus] + #searchSubmit {
+  background-image: linear-gradient(#4cb1ff, #1793e5);
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.2) inset,
+              0 0 0 1px hsla(0,0%,100%,.1) inset,
+              0 1px 0 hsla(210,54%,20%,.03);
+}
+
+#searchText + #searchSubmit:hover {
+  background-image: linear-gradient(#66bdff, #0d9eff);
+  box-shadow: 0 1px 0 hsla(0,0%,100%,.2) inset,
+              0 0 0 1px hsla(0,0%,100%,.1) inset,
+              0 1px 0 hsla(210,54%,20%,.03),
+              0 0 4px hsla(206,100%,20%,.2);
+}
+
+#searchText + #searchSubmit:hover:active {
+  box-shadow: 0 1px 1px hsla(211,79%,6%,.1) inset,
+              0 0 1px hsla(211,79%,6%,.2) inset;
+  transition-duration: 0ms;
+}
+
+#defaultSnippet1,
+#defaultSnippet2,
+#rightsSnippet {
+  display: block;
+  min-height: 38px;
+  background: 30px center no-repeat;
+  padding: 6px 0;
+  -moz-padding-start: 79px;
+}
+
+#rightsSnippet[hidden] {
+  display: none;
+}
+
+#defaultSnippet1:-moz-dir(rtl),
+#defaultSnippet2:-moz-dir(rtl),
+#rightsSnippet:-moz-dir(rtl) {
+  background-position: right 30px 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;
+  -moz-box-pack: center;
+  width: 100%;
+  background-color: hsla(0,0%,0%,.03);
+  border-top: 1px solid hsla(0,0%,0%,.03);
+  box-shadow: 0 1px 2px hsla(0,0%,0%,.02) inset,
+              0 -1px 0 hsla(0,0%,100%,.25);
+}
+
+#launcher:not([session]),
+body[narrow] #launcher[session] {
+  display: block; /* display separator and restore button on separate lines */
+  text-align: center;
+  white-space: nowrap; /* prevent navigational buttons from wrapping */
+}
+
+.launchButton {
+  display: -moz-box;
+  -moz-box-orient: vertical;
+  margin: 16px 1px;
+  padding: 14px 6px;
+  min-width: 88px;
+  max-width: 176px;
+  max-height: 85px;
+  vertical-align: top;
+  white-space: normal;
+  background: transparent padding-box;
+  border: 1px solid transparent;
+  border-radius: 2.5px;
+  color: #525c66;
+  font-size: 75%;
+  cursor: pointer;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+}
+
+body[narrow] #launcher[session] > .launchButton {
+  margin: 4px 1px;
+}
+
+.launchButton:hover {
+  background-color: hsla(211,79%,6%,.03);
+  border-color: hsla(210,54%,20%,.15) hsla(210,54%,20%,.17) hsla(210,54%,20%,.2);
+}
+
+.launchButton:hover:active {
+  background-image: linear-gradient(hsla(211,79%,6%,.02), hsla(211,79%,6%,.05));
+  border-color: hsla(210,54%,20%,.2) hsla(210,54%,20%,.23) hsla(210,54%,20%,.25);
+  box-shadow: 0 1px 1px hsla(211,79%,6%,.05) inset,
+              0 0 1px hsla(211,79%,6%,.1) inset;
+  transition-duration: 0ms;
+}
+
+.launchButton[hidden],
+#launcher:not([session]) > #restorePreviousSessionSeparator,
+#launcher:not([session]) > #restorePreviousSession {
+  display: none;
+}
+
+#restorePreviousSessionSeparator {
+  width: 3px;
+  height: 116px;
+  margin: 0 10px;
+  background-image: linear-gradient(hsla(0,0%,100%,0), hsla(0,0%,100%,.35), hsla(0,0%,100%,0)),
+                    linear-gradient(hsla(211,79%,6%,0), hsla(211,79%,6%,.2), hsla(211,79%,6%,0)),
+                    linear-gradient(hsla(0,0%,100%,0), hsla(0,0%,100%,.35), hsla(0,0%,100%,0));
+  background-position: left top, center, right bottom;
+  background-size: 1px auto;
+  background-repeat: no-repeat;
+}
+
+body[narrow] #restorePreviousSessionSeparator {
+  margin: 0 auto;
+  width: 512px;
+  height: 3px;
+  background-image: linear-gradient(to right, hsla(0,0%,100%,0), hsla(0,0%,100%,.35), hsla(0,0%,100%,0)),
+                    linear-gradient(to right, hsla(211,79%,6%,0), hsla(211,79%,6%,.2), hsla(211,79%,6%,0)),
+                    linear-gradient(to right, hsla(0,0%,100%,0), hsla(0,0%,100%,.35), hsla(0,0%,100%,0));
+  background-size: auto 1px;
+}
+
+#restorePreviousSession {
+  max-width: none;
+  font-size: 90%;
+}
+
+body[narrow] #restorePreviousSession {
+  font-size: 80%;
+}
+
+.launchButton::before {
+  display: block;
+  width: 32px;
+  height: 32px;
+  margin: 0 auto 6px;
+  line-height: 0; /* remove extra vertical space due to non-zero font-size */
+}
+
+#downloads::before {
+  content: url("chrome://browser/content/abouthome/downloads.png");
+}
+
+#bookmarks::before {
+  content: url("chrome://browser/content/abouthome/bookmarks.png");
+}
+
+#history::before {
+  content: url("chrome://browser/content/abouthome/history.png");
+}
+
+#apps::before {
+  content: url("chrome://browser/content/abouthome/apps.png");
+}
+
+#addons::before {
+  content: url("chrome://browser/content/abouthome/addons.png");
+}
+
+#sync::before {
+  content: url("chrome://browser/content/abouthome/sync.png");
+}
+
+#settings::before {
+  content: url("chrome://browser/content/abouthome/settings.png");
+}
+
+#restorePreviousSession::before {
+  content: url("chrome://browser/content/abouthome/restore-large.png");
+  height: 48px;
+  width: 48px;
+  display: inline-block; /* display on same line as text label */
+  vertical-align: middle;
+  margin-bottom: 0;
+  -moz-margin-end: 8px;
+}
+
+#restorePreviousSession:-moz-dir(rtl)::before {
+  transform: scaleX(-1);
+}
+
+body[narrow] #restorePreviousSession::before {
+  content: url("chrome://browser/content/abouthome/restore.png");
+  height: 32px;
+  width: 32px;
+}
+
+#aboutMozilla {
+  display: block;
+  position: relative; /* pin wordmark to edge of document, not of viewport */
+  -moz-box-ordinal-group: 0;
+  opacity: .5;
+  transition: opacity 150ms;
+}
+
+#aboutMozilla:hover {
+  opacity: 1;
+}
+
+#aboutMozilla::before {
+  content: url("chrome://browser/content/abouthome/mozilla.png");
+  display: block;
+  position: absolute;
+  top: 12px;
+  right: 12px;
+  width: 69px;
+  height: 19px;
+}
+
+/* [HiDPI]
+ * At resolutions above 1dppx, prefer downscaling the 2x Retina graphics
+ * rather than upscaling the original-size ones (bug 818940).
+ */
+@media not all and (max-resolution: 1dppx) {
+  #brandLogo {
+    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);
+    transform-origin: 0 0;
+  }
+
+  #downloads::before {
+    content: url("chrome://browser/content/abouthome/downloads@2x.png");
+  }
+
+  #bookmarks::before {
+    content: url("chrome://browser/content/abouthome/bookmarks@2x.png");
+  }
+
+  #history::before {
+    content: url("chrome://browser/content/abouthome/history@2x.png");
+  }
+
+  #apps::before {
+    content: url("chrome://browser/content/abouthome/apps@2x.png");
+  }
+
+  #addons::before {
+    content: url("chrome://browser/content/abouthome/addons@2x.png");
+  }
+
+  #sync::before {
+    content: url("chrome://browser/content/abouthome/sync@2x.png");
+  }
+
+  #settings::before {
+    content: url("chrome://browser/content/abouthome/settings@2x.png");
+  }
+
+  #restorePreviousSession::before {
+    content: url("chrome://browser/content/abouthome/restore-large@2x.png");
+  }
+
+  body[narrow] #restorePreviousSession::before {
+    content: url("chrome://browser/content/abouthome/restore@2x.png");
+  }
+
+  #aboutMozilla::before {
+    content: url("chrome://browser/content/abouthome/mozilla@2x.png");
+  }
+}
+
diff --git a/data/abouthome/aboutHome.js b/data/abouthome/aboutHome.js
new file mode 100644
index 0000000..d3b4aa9
--- /dev/null
+++ b/data/abouthome/aboutHome.js
@@ -0,0 +1,502 @@
+/* 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 SEARCH_ENGINES = {
+  "Google": {
+    // This is the "2x" image designed for OS X retina resolution, Windows at 192dpi, etc.;
+    // it will be scaled down as necessary on lower-dpi displays.
+    image: "data:image/png;base64," +
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+           "T2U3M11AsKf8aRqtnBqQoG91oWkGOS0/XaQo2Pf3u5mUDK9LukD7Mv5Tv9teSQ4VzipsINUtW9Zc" +
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+           "FUJSIfGNjJZNy2ekkqzpazIJOefSoTaA9q1VY+5Wbvs9NAoYVBkFh5Sesi9lJ/u6lt5+WETpoi2M" +
+           "PpZU/k9szmKGtVGRWBjQ6g3zP78pxfSGKb+tJ4LPAsi31S/+uXCUlVZmCIc+DlI15L4Cpr/1FA1d" +
+           "0VLqAilzgcCGChdQc5eoTXqpkNS66hv1YLsUElURiG1sOZj7lunf3v3fwlBKjRfX9EjEHKcscV98" +
+           "D40zRKIqgEpz4yvTVnfjU/VbmL/r4yhwTTbPCNsZNi8g50/OnvbCsXu5wQqVURCBuOb7seu98n7A" +
+           "/L23Tc8NX8mW6pL73UoOhYPH/GJv/I7Dzlqbg5pRUG1q++A//+Ng+4f9gDlATVzLHfErZiHioKrn" +
+           "H37uhgeG597sdYnIYeeszypQqQawre9dHNbd0Yj9/5KnfsB8DJpuXXj8Q+ryj3dUZglD1Uz3MsWv" +
+           "HX7uh1fv6QGHn7upAmrWQpEV2zSt+bVptamw+6C9VaP/hcoHrvkABgydUjPLywy6Oboh6HW6PgLj" +
+           "LYqStqYRQHKDMQflMhXOQrnata27tvGvufrEn8ZBfmdPP2AO7NpmAAw85B8qTyjKlt1svAHTjPGL" +
+           "k4w0jAcTAyllnBoh9Kxw/tEdS8cuT0WyH4vX1PYD5qMBzQDE2eFDxz09zsscWuwVHX6a8YwaFAiM" +
+           "NAkHr4vdUdf82rQN6JwnSl4N4vAxeKdxP2A+mjXuKTvcXcY9TdOnyxPk4zKZ/vbRAqe75C3QfZZY" +
+           "0P/y6/7299z+H4QrdGsoib8JAAAAAElFTkSuQmCC"
+  }
+};
+
+// The process of adding a new default snippet involves:
+//   * add a new entity to aboutHome.dtd
+//   * add a <span/> for it in aboutHome.xhtml
+//   * add an entry here in the proper ordering (based on spans)
+// The <a/> part of the snippet will be linked to the corresponding url.
+const DEFAULT_SNIPPETS_URLS = [ "" ];
+
+const SNIPPETS_UPDATE_INTERVAL_MS = 86400000; // 1 Day.
+
+// IndexedDB storage constants.
+const DATABASE_NAME = "abouthome";
+const DATABASE_VERSION = 1;
+const SNIPPETS_OBJECTSTORE_NAME = "snippets";
+
+// This global tracks if the page has been set up before, to prevent double inits
+let gInitialized = false;
+let gObserver = new MutationObserver(function (mutations) {
+  for (let mutation of mutations) {
+    if (mutation.attributeName == "searchEngineName") {
+      setupSearchEngine();
+      if (!gInitialized) {
+//        ensureSnippetsMapThen(loadSnippets);
+        gInitialized = true;
+      }
+      return;
+    }
+  }
+});
+
+window.addEventListener("pageshow", function () {
+  // Delay search engine setup, cause browser.js::BrowserOnAboutPageLoad runs
+  // later and may use asynchronous getters.
+  window.gObserver.observe(document.documentElement, { attributes: true });
+  fitToWidth();
+  window.addEventListener("resize", fitToWidth);
+
+  // Ask chrome to update snippets.
+  var event = new CustomEvent("AboutHomeLoad", {bubbles:true});
+  document.dispatchEvent(event);
+});
+
+window.addEventListener("pagehide", function() {
+  window.gObserver.disconnect();
+  window.removeEventListener("resize", fitToWidth);
+});
+
+// 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.
+let gSnippetsMap;
+let 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)
+{
+return;
+  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, DATABASE_VERSION);
+
+  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 = db.transaction(SNIPPETS_OBJECTSTORE_NAME)
+                          .objectStore(SNIPPETS_OBJECTSTORE_NAME).openCursor();
+    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: function (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: function (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() cache.size
+      });
+
+      setTimeout(invokeCallbacks, 0);
+    }
+  }
+}
+
+function onSearchSubmit(aEvent)
+{
+  let searchTerms = document.getElementById("searchText").value;
+  let engineName = document.documentElement.getAttribute("searchEngineName");
+
+  if (engineName && searchTerms.length > 0) {
+    // Send an event that will perform a search and Firefox Health Report will
+    // record that a search from about:home has occurred.
+    let eventData = JSON.stringify({
+      engineName: engineName,
+      searchTerms: searchTerms
+    });
+    let event = new CustomEvent("AboutHomeSearchEvent", {detail: eventData});
+    document.dispatchEvent(event);
+  }
+
+  aEvent.preventDefault();
+}
+
+
+function setupSearchEngine()
+{
+  // The "autofocus" attribute doesn't focus the form element
+  // immediately when the element is first drawn, so the
+  // attribute is also used for styling when the page first loads.
+  let searchText = document.getElementById("searchText");
+  searchText.addEventListener("blur", function searchText_onBlur() {
+    searchText.removeEventListener("blur", searchText_onBlur);
+    searchText.removeAttribute("autofocus");
+  });
+ 
+  let searchEngineName = document.documentElement.getAttribute("searchEngineName");
+  let searchEngineInfo = SEARCH_ENGINES[searchEngineName];
+  let logoElt = document.getElementById("searchEngineLogo");
+
+  // Add search engine logo.
+  if (searchEngineInfo && searchEngineInfo.image) {
+    logoElt.parentNode.hidden = false;
+    logoElt.src = searchEngineInfo.image;
+    logoElt.alt = searchEngineName;
+    searchText.placeholder = "";
+  }
+  else {
+    logoElt.parentNode.hidden = true;
+    searchText.placeholder = searchEngineName;
+  }
+
+}
+
+/**
+ * Inform the test harness that we're done loading the page.
+ */
+function loadSucceeded()
+{
+  var event = new CustomEvent("AboutHomeLoadSnippetsSucceeded", {bubbles:true});
+  document.dispatchEvent(event);
+}
+
+/**
+ * Update the local snippets from the remote storage, then show them through
+ * showSnippets.
+ */
+function loadSnippets()
+{
+return;
+  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();
+    try {
+      xhr.open("GET", updateURL, true);
+    } catch (ex) {
+      showSnippets();
+      loadSucceeded();
+      return;
+    }
+    // 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.onerror = function (event) {
+      showSnippets();
+    };
+    xhr.onload = function (event)
+    {
+      if (xhr.status == 200) {
+        gSnippetsMap.set("snippets", xhr.responseText);
+        gSnippetsMap.set("snippets-cached-version", currentVersion);
+      }
+      showSnippets();
+      loadSucceeded();
+    };
+    xhr.send(null);
+  } else {
+    showSnippets();
+    loadSucceeded();
+  }
+}
+
+/**
+ * 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.
+ */
+let _snippetsShown = false;
+function showSnippets()
+{
+return;
+  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()
+{
+return;
+  // 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() {
+  if (window.scrollMaxX) {
+    document.body.setAttribute("narrow", "true");
+  } else if (document.body.hasAttribute("narrow")) {
+    document.body.removeAttribute("narrow");
+    fitToWidth();
+  }
+}
diff --git a/data/abouthome/aboutHome.xhtml b/data/abouthome/aboutHome.xhtml
new file mode 100644
index 0000000..c1acf4a
--- /dev/null
+++ b/data/abouthome/aboutHome.xhtml
@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- 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/. -->
+
+<!DOCTYPE html [
+  <!ENTITY % htmlDTD
+    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+    "DTD/xhtml1-strict.dtd">
+  %htmlDTD;
+  <!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
+  %globalDTD;
+  <!ENTITY % aboutHomeDTD SYSTEM "chrome://browser/locale/aboutHome.dtd">
+  %aboutHomeDTD;
+  <!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd" >
+  %browserDTD;
+]>
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <title>&abouthome.pageTitle;</title>
+
+    <link rel="icon" type="image/png" id="favicon"
+          href="chrome://branding/content/icon32.png"/>
+    <link rel="stylesheet" type="text/css" media="all"
+          href="chrome://browser/content/abouthome/aboutHome.css"/>
+
+<style>
+
+label{
+position:relative;
+bottom:2px;
+left:2px;
+}
+
+em {
+color:#600
+}
+
+a{
+color:#004998
+}
+
+.block-side-margin {
+  min-width: 16px;
+  -moz-box-flex: 1;
+}
+
+#block-horizontal-margin {
+  display: -moz-box;
+  -moz-box-flex: 1;
+}
+
+ul li {
+list-style:none;
+background:#ddd;
+border-radius:3px;
+padding:3px 5px 3px 5px;
+margin:5px;
+box-shadow: 0px 2px 0 #ccc ;
+float:left;
+}
+
+ul li a{
+font-weight:bold;
+color:#666;
+text-shadow:0px 1px 0px #fff;
+}
+
+.titlelink {
+font-weight:bold;
+color:#56728C;
+text-shadow:0px 1px 0px #fff;
+}
+
+#footer{
+min-height:100px;
+}
+
+</style>
+
+  </head>
+
+  <body dir="&locale.dir;">
+
+
+    <div class="spacer"/>
+    <div id="topSection">
+      <img src="chrome://branding/content/about-logo.png"/>
+
+      <div id="searchContainer">
+        <form name="searchForm" id="searchForm" action="https://duckduckgo.com/html/">
+          <input type="text" name="q" value="" id="searchText" maxlength="256"
+                 autofocus="autofocus"/>
+          <input id="searchSubmit" type="submit" value="&abouthome.searchEngineButton.label;"/>
+        </form>
+      </div>
+
+    </div>
+
+    <div class="spacer"/>
+
+  </body>
+</html>
+
diff --git a/data/abouthome/addons.png b/data/abouthome/addons.png
new file mode 100644
index 0000000..41519ce
--- /dev/null
+++ b/data/abouthome/addons.png
diff --git a/data/abouthome/addons@2x.png b/data/abouthome/addons@2x.png
new file mode 100644
index 0000000..d4d04ee
--- /dev/null
+++ b/data/abouthome/addons@2x.png
diff --git a/data/abouthome/apps.png b/data/abouthome/apps.png
new file mode 100644
index 0000000..79fc95d
--- /dev/null
+++ b/data/abouthome/apps.png
diff --git a/data/abouthome/apps@2x.png b/data/abouthome/apps@2x.png
new file mode 100644
index 0000000..cbe7a6d
--- /dev/null
+++ b/data/abouthome/apps@2x.png
diff --git a/data/abouthome/bookmarks.png b/data/abouthome/bookmarks.png
new file mode 100644
index 0000000..5c7e194
--- /dev/null
+++ b/data/abouthome/bookmarks.png
diff --git a/data/abouthome/bookmarks@2x.png b/data/abouthome/bookmarks@2x.png
new file mode 100644
index 0000000..7ede007
--- /dev/null
+++ b/data/abouthome/bookmarks@2x.png
diff --git a/data/abouthome/downloads.png b/data/abouthome/downloads.png
new file mode 100644
index 0000000..3d4d10e
--- /dev/null
+++ b/data/abouthome/downloads.png
diff --git a/data/abouthome/downloads@2x.png b/data/abouthome/downloads@2x.png
new file mode 100644
index 0000000..d384a22
--- /dev/null
+++ b/data/abouthome/downloads@2x.png
diff --git a/data/abouthome/history.png b/data/abouthome/history.png
new file mode 100644
index 0000000..ae742b1
--- /dev/null
+++ b/data/abouthome/history.png
diff --git a/data/abouthome/history@2x.png b/data/abouthome/history@2x.png
new file mode 100644
index 0000000..696902e
--- /dev/null
+++ b/data/abouthome/history@2x.png
diff --git a/data/abouthome/restore-large.png b/data/abouthome/restore-large.png
new file mode 100644
index 0000000..ef593e6
--- /dev/null
+++ b/data/abouthome/restore-large.png
diff --git a/data/abouthome/restore-large@2x.png b/data/abouthome/restore-large@2x.png
new file mode 100644
index 0000000..d5c71d0
--- /dev/null
+++ b/data/abouthome/restore-large@2x.png
diff --git a/data/abouthome/restore.png b/data/abouthome/restore.png
new file mode 100644
index 0000000..5c3d6f4
--- /dev/null
+++ b/data/abouthome/restore.png
diff --git a/data/abouthome/restore@2x.png b/data/abouthome/restore@2x.png
new file mode 100644
index 0000000..5acb630
--- /dev/null
+++ b/data/abouthome/restore@2x.png
diff --git a/data/abouthome/settings.png b/data/abouthome/settings.png
new file mode 100644
index 0000000..4b0c309
--- /dev/null
+++ b/data/abouthome/settings.png
diff --git a/data/abouthome/settings@2x.png b/data/abouthome/settings@2x.png
new file mode 100644
index 0000000..c77cb9a
--- /dev/null
+++ b/data/abouthome/settings@2x.png
diff --git a/data/abouthome/snippet1.png b/data/abouthome/snippet1.png
new file mode 100644
index 0000000..ce2ec55
--- /dev/null
+++ b/data/abouthome/snippet1.png
diff --git a/data/abouthome/snippet1@2x.png b/data/abouthome/snippet1@2x.png
new file mode 100644
index 0000000..f57cd0a
--- /dev/null
+++ b/data/abouthome/snippet1@2x.png
diff --git a/data/abouthome/snippet2.png b/data/abouthome/snippet2.png
new file mode 100644
index 0000000..e0724fb
--- /dev/null
+++ b/data/abouthome/snippet2.png
diff --git a/data/abouthome/snippet2@2x.png b/data/abouthome/snippet2@2x.png
new file mode 100644
index 0000000..40577f5
--- /dev/null
+++ b/data/abouthome/snippet2@2x.png
diff --git a/data/abouthome/sync.png b/data/abouthome/sync.png
new file mode 100644
index 0000000..11e40cc
--- /dev/null
+++ b/data/abouthome/sync.png
diff --git a/data/abouthome/sync@2x.png b/data/abouthome/sync@2x.png
new file mode 100644
index 0000000..6354f5b
--- /dev/null
+++ b/data/abouthome/sync@2x.png