mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
502 lines
23 KiB
JavaScript
502 lines
23 KiB
JavaScript
/* 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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const SEARCH_ENGINES = {
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"Google": {
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// This is the "2x" image designed for OS X retina resolution, Windows at 192dpi, etc.;
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// it will be scaled down as necessary on lower-dpi displays.
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image: "data:image/png;base64," +
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|
|
"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 = [
|
|
"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 = 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)
|
|
{
|
|
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()
|
|
{
|
|
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()
|
|
{
|
|
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() {
|
|
if (window.scrollMaxX) {
|
|
document.body.setAttribute("narrow", "true");
|
|
} else if (document.body.hasAttribute("narrow")) {
|
|
document.body.removeAttribute("narrow");
|
|
fitToWidth();
|
|
}
|
|
}
|