1 files changed, 175 insertions, 0 deletions
diff --git a/browser/components/firefoxview/helpers.mjs b/browser/components/firefoxview/helpers.mjs
new file mode 100644
index 0000000000..3cb308a587
--- /dev/null
+++ b/browser/components/firefoxview/helpers.mjs
@@ -0,0 +1,175 @@
+/* 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 lazy = {};
+const loggersByName = new Map();
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  BrowserUtils: "resource://gre/modules/BrowserUtils.sys.mjs",
+  Log: "resource://gre/modules/Log.sys.mjs",
+  PlacesUIUtils: "resource:///modules/PlacesUIUtils.sys.mjs",
+  PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
+});
+
+ChromeUtils.defineLazyGetter(lazy, "relativeTimeFormat", () => {
+  return new Services.intl.RelativeTimeFormat(undefined, { style: "narrow" });
+});
+
+const { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+XPCOMUtils.defineLazyPreferenceGetter(
+  lazy,
+  "searchEnabledPref",
+  "browser.firefox-view.search.enabled"
+);
+
+// Cutoff of 1.5 minutes + 1 second to determine what text string to display
+export const NOW_THRESHOLD_MS = 91000;
+
+// Configure logging level via this pref
+export const LOGGING_PREF = "browser.tabs.firefox-view.logLevel";
+
+export const MAX_TABS_FOR_RECENT_BROWSING = 5;
+
+export function formatURIForDisplay(uriString) {
+  return lazy.BrowserUtils.formatURIStringForDisplay(uriString);
+}
+
+export function convertTimestamp(
+  timestamp,
+  fluentStrings,
+  _nowThresholdMs = NOW_THRESHOLD_MS
+) {
+  if (!timestamp) {
+    // It's marginally better to show nothing instead of "53 years ago"
+    return "";
+  }
+  const elapsed = Date.now() - timestamp;
+  let formattedTime;
+  if (elapsed <= _nowThresholdMs) {
+    // Use a different string for very recent timestamps
+    formattedTime = fluentStrings.formatValueSync(
+      "firefoxview-just-now-timestamp"
+    );
+  } else {
+    formattedTime = lazy.relativeTimeFormat.formatBestUnit(new Date(timestamp));
+  }
+  return formattedTime;
+}
+
+export function createFaviconElement(image, targetURI = "") {
+  let favicon = document.createElement("div");
+  favicon.style.backgroundImage = `url('${getImageUrl(image, targetURI)}')`;
+  favicon.classList.add("favicon");
+  return favicon;
+}
+
+export function getImageUrl(icon, targetURI) {
+  return icon ? lazy.PlacesUIUtils.getImageURL(icon) : `page-icon:${targetURI}`;
+}
+
+/**
+ * This function doesn't just copy the link to the clipboard, it creates a
+ * URL object on the clipboard, so when it's pasted into an application that
+ * supports it, it displays the title as a link.
+ */
+export function placeLinkOnClipboard(title, uri) {
+  let node = {
+    type: 0,
+    title,
+    uri,
+  };
+
+  // Copied from doCommand/placesCmd_copy in PlacesUIUtils.sys.mjs
+
+  // This is a little hacky, but there is a lot of code in Places that handles
+  // clipboard stuff, so it's easier to reuse.
+
+  // This order is _important_! It controls how this and other applications
+  // select data to be inserted based on type.
+  let contents = [
+    { type: lazy.PlacesUtils.TYPE_X_MOZ_URL, entries: [] },
+    { type: lazy.PlacesUtils.TYPE_HTML, entries: [] },
+    { type: lazy.PlacesUtils.TYPE_PLAINTEXT, entries: [] },
+  ];
+
+  contents.forEach(function (content) {
+    content.entries.push(lazy.PlacesUtils.wrapNode(node, content.type));
+  });
+
+  let xferable = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+    Ci.nsITransferable
+  );
+  xferable.init(null);
+
+  function addData(type, data) {
+    xferable.addDataFlavor(type);
+    xferable.setTransferData(type, lazy.PlacesUtils.toISupportsString(data));
+  }
+
+  contents.forEach(function (content) {
+    addData(content.type, content.entries.join(lazy.PlacesUtils.endl));
+  });
+
+  Services.clipboard.setData(xferable, null, Ci.nsIClipboard.kGlobalClipboard);
+}
+
+/**
+ * Check the user preference to enable search functionality in Firefox View.
+ *
+ * @returns {boolean} The preference value.
+ */
+export function isSearchEnabled() {
+  return lazy.searchEnabledPref;
+}
+
+/**
+ * Escape special characters for regular expressions from a string.
+ *
+ * @param {string} string
+ *   The string to sanitize.
+ * @returns {string} The sanitized string.
+ */
+export function escapeRegExp(string) {
+  return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+}
+
+/**
+ * Search a tab list for items that match the given query.
+ */
+export function searchTabList(query, tabList) {
+  const regex = RegExp(escapeRegExp(query), "i");
+  return tabList.filter(
+    ({ title, url }) => regex.test(title) || regex.test(url)
+  );
+}
+
+/**
+ * Get or create a logger, whose log-level is controlled by a pref
+ *
+ * @param {string} loggerName - Creating named loggers helps differentiate log messages from different
+                                components or features.
+ */
+
+export function getLogger(loggerName) {
+  if (!loggersByName.has(loggerName)) {
+    let logger = lazy.Log.repository.getLogger(`FirefoxView.${loggerName}`);
+    logger.manageLevelFromPref(LOGGING_PREF);
+    logger.addAppender(
+      new lazy.Log.ConsoleAppender(new lazy.Log.BasicFormatter())
+    );
+    loggersByName.set(loggerName, logger);
+  }
+  return loggersByName.get(loggerName);
+}
+
+export function escapeHtmlEntities(text) {
+  return (text || "")
+    .replace(/&/g, "&amp;")
+    .replace(/</g, "&lt;")
+    .replace(/>/g, "&gt;")
+    .replace(/"/g, "&quot;")
+    .replace(/'/g, "&#39;");
+}