diff -r 000000000000 -r 6474c204b198 addon-sdk/source/lib/sdk/tabs/utils.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/lib/sdk/tabs/utils.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,398 @@
+/* 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/. */
+'use strict';
+
+module.metadata = {
+  'stability': 'unstable'
+};
+
+
+// NOTE: This file should only deal with xul/native tabs
+
+
+const { Ci } = require('chrome');
+const { defer } = require("../lang/functional");
+const { windows, isBrowser } = require('../window/utils');
+const { isPrivateBrowsingSupported } = require('../self');
+const { isGlobalPBSupported } = require('../private-browsing/utils');
+
+// Bug 834961: ignore private windows when they are not supported
+function getWindows() windows(null, { includePrivate: isPrivateBrowsingSupported || isGlobalPBSupported });
+
+const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+
+// Define predicate functions that can be used to detech weather
+// we deal with fennec tabs or firefox tabs.
+
+// Predicate to detect whether tab is XUL "Tab" node.
+const isXULTab = tab =>
+  tab instanceof Ci.nsIDOMNode &&
+  tab.nodeName === "tab" &&
+  tab.namespaceURI === XUL_NS;
+exports.isXULTab = isXULTab;
+
+// Predicate to detecet whether given tab is a fettec tab.
+// Unfortunately we have to guess via duck typinng of:
+// http://mxr.mozilla.org/mozilla-central/source/mobile/android/chrome/content/browser.js#2583
+const isFennecTab = tab =>
+  tab &&
+  tab.QueryInterface &&
+  Ci.nsIBrowserTab &&
+  tab.QueryInterface(Ci.nsIBrowserTab) === tab;
+exports.isFennecTab = isFennecTab;
+
+const isTab = x => isXULTab(x) || isFennecTab(x);
+exports.isTab = isTab;
+
+function activateTab(tab, window) {
+  let gBrowser = getTabBrowserForTab(tab);
+
+  // normal case
+  if (gBrowser) {
+    gBrowser.selectedTab = tab;
+  }
+  // fennec ?
+  else if (window && window.BrowserApp) {
+    window.BrowserApp.selectTab(tab);
+  }
+  return null;
+}
+exports.activateTab = activateTab;
+
+function getTabBrowser(window) {
+  return window.gBrowser;
+}
+exports.getTabBrowser = getTabBrowser;
+
+function getTabContainer(window) {
+  return getTabBrowser(window).tabContainer;
+}
+exports.getTabContainer = getTabContainer;
+
+/**
+ * Returns the tabs for the `window` if given, or the tabs
+ * across all the browser's windows otherwise.
+ *
+ * @param {nsIWindow} [window]
+ *    A reference to a window
+ *
+ * @returns {Array} an array of Tab objects
+ */
+function getTabs(window) {
+  if (arguments.length === 0) {
+    return getWindows().filter(isBrowser).reduce(function(tabs, window) {
+      return tabs.concat(getTabs(window))
+    }, []);
+  }
+
+  // fennec
+  if (window.BrowserApp)
+    return window.BrowserApp.tabs;
+
+  // firefox - default
+  return Array.slice(getTabContainer(window).children);
+}
+exports.getTabs = getTabs;
+
+function getActiveTab(window) {
+  return getSelectedTab(window);
+}
+exports.getActiveTab = getActiveTab;
+
+function getOwnerWindow(tab) {
+  // normal case
+  if (tab.ownerDocument)
+    return tab.ownerDocument.defaultView;
+
+  // try fennec case
+  return getWindowHoldingTab(tab);
+}
+exports.getOwnerWindow = getOwnerWindow;
+
+// fennec
+function getWindowHoldingTab(rawTab) {
+  for each (let window in getWindows()) {
+    // this function may be called when not using fennec,
+    // but BrowserApp is only defined on Fennec
+    if (!window.BrowserApp)
+      continue;
+
+    for each (let tab in window.BrowserApp.tabs) {
+      if (tab === rawTab)
+        return window;
+    }
+  }
+
+  return null;
+}
+
+function openTab(window, url, options) {
+  options = options || {};
+
+  // fennec?
+  if (window.BrowserApp) {
+    return window.BrowserApp.addTab(url, {
+      selected: options.inBackground ? false : true,
+      pinned: options.isPinned || false,
+      isPrivate: options.isPrivate || false
+    });
+  }
+
+  // firefox
+  let newTab = window.gBrowser.addTab(url);
+  if (!options.inBackground) {
+    activateTab(newTab);
+  }
+  return newTab;
+};
+exports.openTab = openTab;
+
+function isTabOpen(tab) {
+  // try normal case then fennec case
+  return !!((tab.linkedBrowser) || getWindowHoldingTab(tab));
+}
+exports.isTabOpen = isTabOpen;
+
+function closeTab(tab) {
+  let gBrowser = getTabBrowserForTab(tab);
+  // normal case?
+  if (gBrowser) {
+    // Bug 699450: the tab may already have been detached
+    if (!tab.parentNode)
+      return;
+    return gBrowser.removeTab(tab);
+  }
+
+  let window = getWindowHoldingTab(tab);
+  // fennec?
+  if (window && window.BrowserApp) {
+    // Bug 699450: the tab may already have been detached
+    if (!tab.browser)
+      return;
+    return window.BrowserApp.closeTab(tab);
+  }
+  return null;
+}
+exports.closeTab = closeTab;
+
+function getURI(tab) {
+  if (tab.browser) // fennec
+    return tab.browser.currentURI.spec;
+  return tab.linkedBrowser.currentURI.spec;
+}
+exports.getURI = getURI;
+
+function getTabBrowserForTab(tab) {
+  let outerWin = getOwnerWindow(tab);
+  if (outerWin)
+    return getOwnerWindow(tab).gBrowser;
+  return null;
+}
+exports.getTabBrowserForTab = getTabBrowserForTab;
+
+function getBrowserForTab(tab) {
+  if (tab.browser) // fennec
+    return tab.browser;
+
+  return tab.linkedBrowser;
+}
+exports.getBrowserForTab = getBrowserForTab;
+
+function getTabId(tab) {
+  if (tab.browser) // fennec
+    return tab.id
+
+  return String.split(tab.linkedPanel, 'panel').pop();
+}
+exports.getTabId = getTabId;
+
+function getTabForId(id) {
+  return getTabs().find(tab => getTabId(tab) === id) || null;
+}
+exports.getTabForId = getTabForId;
+
+function getTabTitle(tab) {
+  return getBrowserForTab(tab).contentDocument.title || tab.label || "";
+}
+exports.getTabTitle = getTabTitle;
+
+function setTabTitle(tab, title) {
+  title = String(title);
+  if (tab.browser)
+    tab.browser.contentDocument.title = title;
+  tab.label = String(title);
+}
+exports.setTabTitle = setTabTitle;
+
+function getTabContentWindow(tab) {
+  return getBrowserForTab(tab).contentWindow;
+}
+exports.getTabContentWindow = getTabContentWindow;
+
+/**
+ * Returns all tabs' content windows across all the browsers' windows
+ */
+function getAllTabContentWindows() {
+  return getTabs().map(getTabContentWindow);
+}
+exports.getAllTabContentWindows = getAllTabContentWindows;
+
+// gets the tab containing the provided window
+function getTabForContentWindow(window) {
+  // Retrieve the topmost frame container. It can be either <xul:browser>,
+  // <xul:iframe/> or <html:iframe/>. But in our case, it should be xul:browser.
+  let browser;
+  try {
+    browser = window.QueryInterface(Ci.nsIInterfaceRequestor)
+                    .getInterface(Ci.nsIWebNavigation)
+                    .QueryInterface(Ci.nsIDocShell)
+                    .chromeEventHandler;
+  } catch(e) {
+    // Bug 699450: The tab may already have been detached so that `window` is
+    // in a almost destroyed state and can't be queryinterfaced anymore.
+  }
+
+  // Is null for toplevel documents
+  if (!browser) {
+    return null;
+  }
+
+  // Retrieve the owner window, should be browser.xul one
+  let chromeWindow = browser.ownerDocument.defaultView;
+
+  // Ensure that it is top-level browser window.
+  // We need extra checks because of Mac hidden window that has a broken
+  // `gBrowser` global attribute.
+  if ('gBrowser' in chromeWindow && chromeWindow.gBrowser &&
+      'browsers' in chromeWindow.gBrowser) {
+    // Looks like we are on Firefox Desktop
+    // Then search for the position in tabbrowser in order to get the tab object
+    let browsers = chromeWindow.gBrowser.browsers;
+    let i = browsers.indexOf(browser);
+    if (i !== -1)
+      return chromeWindow.gBrowser.tabs[i];
+    return null;
+  }
+  // Fennec
+  else if ('BrowserApp' in chromeWindow) {
+    return getTabForWindow(window);
+  }
+
+  return null;
+}
+exports.getTabForContentWindow = getTabForContentWindow;
+
+// used on fennec
+function getTabForWindow(window) {
+  for each (let { BrowserApp } in getWindows()) {
+    if (!BrowserApp)
+      continue;
+
+    for each (let tab in BrowserApp.tabs) {
+      if (tab.browser.contentWindow == window.top)
+        return tab;
+    }
+  }
+  return null;
+}
+
+function getTabURL(tab) {
+  if (tab.browser) // fennec
+    return String(tab.browser.currentURI.spec);
+  return String(getBrowserForTab(tab).currentURI.spec);
+}
+exports.getTabURL = getTabURL;
+
+function setTabURL(tab, url) {
+  url = String(url);
+  if (tab.browser)
+    return tab.browser.loadURI(url);
+  return getBrowserForTab(tab).loadURI(url);
+}
+// "TabOpen" event is fired when it's still "about:blank" is loaded in the
+// changing `location` property of the `contentDocument` has no effect since
+// seems to be either ignored or overridden by internal listener, there for
+// location change is enqueued for the next turn of event loop.
+exports.setTabURL = defer(setTabURL);
+
+function getTabContentType(tab) {
+  return getBrowserForTab(tab).contentDocument.contentType;
+}
+exports.getTabContentType = getTabContentType;
+
+function getSelectedTab(window) {
+  if (window.BrowserApp) // fennec?
+    return window.BrowserApp.selectedTab;
+  if (window.gBrowser)
+    return window.gBrowser.selectedTab;
+  return null;
+}
+exports.getSelectedTab = getSelectedTab;
+
+
+function getTabForBrowser(browser) {
+  for each (let window in getWindows()) {
+    // this function may be called when not using fennec
+    if (!window.BrowserApp)
+      continue;
+
+    for each (let tab in window.BrowserApp.tabs) {
+      if (tab.browser === browser)
+        return tab;
+    }
+  }
+  return null;
+}
+exports.getTabForBrowser = getTabForBrowser;
+
+function pin(tab) {
+  let gBrowser = getTabBrowserForTab(tab);
+  // TODO: Implement Fennec support
+  if (gBrowser) gBrowser.pinTab(tab);
+}
+exports.pin = pin;
+
+function unpin(tab) {
+  let gBrowser = getTabBrowserForTab(tab);
+  // TODO: Implement Fennec support
+  if (gBrowser) gBrowser.unpinTab(tab);
+}
+exports.unpin = unpin;
+
+function isPinned(tab) !!tab.pinned
+exports.isPinned = isPinned;
+
+function reload(tab) {
+  let gBrowser = getTabBrowserForTab(tab);
+  // Firefox
+  if (gBrowser) gBrowser.unpinTab(tab);
+  // Fennec
+  else if (tab.browser) tab.browser.reload();
+}
+exports.reload = reload
+
+function getIndex(tab) {
+  let gBrowser = getTabBrowserForTab(tab);
+  // Firefox
+  if (gBrowser) {
+    let document = getBrowserForTab(tab).contentDocument;
+    return gBrowser.getBrowserIndexForDocument(document);
+  }
+  // Fennec
+  else {
+    let window = getWindowHoldingTab(tab)
+    let tabs = window.BrowserApp.tabs;
+    for (let i = tabs.length; i >= 0; i--)
+      if (tabs[i] === tab) return i;
+  }
+}
+exports.getIndex = getIndex;
+
+function move(tab, index) {
+  let gBrowser = getTabBrowserForTab(tab);
+  // Firefox
+  if (gBrowser) gBrowser.moveTabTo(tab, index);
+  // TODO: Implement fennec support
+}
+exports.move = move;