The Tor Browser: browser/base/content/test/general/browser_tabopen

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* Any copyright is dedicated to the Public Domain.

     2    http://creativecommons.org/publicdomain/zero/1.0/ */

     4 XPCOMUtils.defineLazyGetter(this, "docShell", () => {

     5   return window.QueryInterface(Ci.nsIInterfaceRequestor)

     6                .getInterface(Ci.nsIWebNavigation)

     7                .QueryInterface(Ci.nsIDocShell);

     8 });

    10 const EXPECTED_REFLOWS = [

    11   // tabbrowser.adjustTabstrip() call after tabopen animation has finished

    12   "adjustTabstrip@chrome://browser/content/tabbrowser.xml|" +

    13     "_handleNewTab@chrome://browser/content/tabbrowser.xml|" +

    14     "onxbltransitionend@chrome://browser/content/tabbrowser.xml|",

    16   // switching focus in updateCurrentBrowser() causes reflows

    17   "updateCurrentBrowser@chrome://browser/content/tabbrowser.xml|" +

    18     "onselect@chrome://browser/content/browser.xul|",

    20   // switching focus in openLinkIn() causes reflows

    21   "openLinkIn@chrome://browser/content/utilityOverlay.js|" +

    22     "openUILinkIn@chrome://browser/content/utilityOverlay.js|" +

    23     "BrowserOpenTab@chrome://browser/content/browser.js|",

    25   // accessing element.scrollPosition in _fillTrailingGap() flushes layout

    26   "get_scrollPosition@chrome://global/content/bindings/scrollbox.xml|" +

    27     "_fillTrailingGap@chrome://browser/content/tabbrowser.xml|" +

    28     "_handleNewTab@chrome://browser/content/tabbrowser.xml|" +

    29     "onxbltransitionend@chrome://browser/content/tabbrowser.xml|",

    31   // The TabView iframe causes reflows in the parent document.

    32   "iQClass_height@chrome://browser/content/tabview.js|" +

    33     "GroupItem_getContentBounds@chrome://browser/content/tabview.js|" +

    34     "GroupItem_shouldStack@chrome://browser/content/tabview.js|" +

    35     "GroupItem_arrange@chrome://browser/content/tabview.js|" +

    36     "GroupItem_add@chrome://browser/content/tabview.js|" +

    37     "GroupItems_newTab@chrome://browser/content/tabview.js|" +

    38     "TabItem__reconnect@chrome://browser/content/tabview.js|" +

    39     "TabItem@chrome://browser/content/tabview.js|" +

    40     "TabItems_link@chrome://browser/content/tabview.js|" +

    41     "TabItems_init/this._eventListeners.open@chrome://browser/content/tabview.js|",

    43   // SessionStore.getWindowDimensions()

    44   "ssi_getWindowDimension@resource:///modules/sessionstore/SessionStore.jsm|" +

    45     "ssi_updateWindowFeatures/<@resource:///modules/sessionstore/SessionStore.jsm|" +

    46     "ssi_updateWindowFeatures@resource:///modules/sessionstore/SessionStore.jsm|" +

    47     "ssi_collectWindowData@resource:///modules/sessionstore/SessionStore.jsm|",

    49   // tabPreviews.capture()

    50   "tabPreviews_capture@chrome://browser/content/browser.js|" +

    51     "tabPreviews_handleEvent/<@chrome://browser/content/browser.js|",

    53   // tabPreviews.capture()

    54   "tabPreviews_capture@chrome://browser/content/browser.js|" +

    55     "@chrome://browser/content/browser.js|"

    56 ];

    58 const PREF_PRELOAD = "browser.newtab.preload";

    59 const PREF_NEWTAB_DIRECTORYSOURCE = "browser.newtabpage.directorySource";

    61 /*

    62  * This test ensures that there are no unexpected

    63  * uninterruptible reflows when opening new tabs.

    64  */

    65 function test() {

    66   waitForExplicitFinish();

    68   Services.prefs.setBoolPref(PREF_PRELOAD, false);

    69   Services.prefs.setCharPref(PREF_NEWTAB_DIRECTORYSOURCE, "data:application/json,{}");

    70   registerCleanupFunction(() => {

    71     Services.prefs.clearUserPref(PREF_PRELOAD);

    72     Services.prefs.clearUserPref(PREF_NEWTAB_DIRECTORYSOURCE);

    73   });

    75   // Add a reflow observer and open a new tab.

    76   docShell.addWeakReflowObserver(observer);

    77   BrowserOpenTab();

    79   // Wait until the tabopen animation has finished.

    80   waitForTransitionEnd(function () {

    81     // Remove reflow observer and clean up.

    82     docShell.removeWeakReflowObserver(observer);

    83     gBrowser.removeCurrentTab();

    85     finish();

    86   });

    87 }

    89 let observer = {

    90   reflow: function (start, end) {

    91     // Gather information about the current code path.

    92     let path = (new Error().stack).split("\n").slice(1).map(line => {

    93       return line.replace(/:\d+:\d+$/, "");

    94     }).join("|");

    95     let pathWithLineNumbers = (new Error().stack).split("\n").slice(1).join("|");

    97     // Stack trace is empty. Reflow was triggered by native code.

    98     if (path === "") {

    99       return;

   100     }

   102     // Check if this is an expected reflow.

   103     for (let stack of EXPECTED_REFLOWS) {

   104       if (path.startsWith(stack)) {

   105         ok(true, "expected uninterruptible reflow '" + stack + "'");

   106         return;

   107       }

   108     }

   110     ok(false, "unexpected uninterruptible reflow '" + pathWithLineNumbers + "'");

   111   },

   113   reflowInterruptible: function (start, end) {

   114     // We're not interested in interruptible reflows.

   115   },

   117   QueryInterface: XPCOMUtils.generateQI([Ci.nsIReflowObserver,

   118                                          Ci.nsISupportsWeakReference])

   119 };

   121 function waitForTransitionEnd(callback) {

   122   let tab = gBrowser.selectedTab;

   123   tab.addEventListener("transitionend", function onEnd(event) {

   124     if (event.propertyName === "max-width") {

   125       tab.removeEventListener("transitionend", onEnd);

   126       executeSoon(callback);

   127     }

   128   });

   129 }

The Tor Browser / file revision