tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_isactiveintab.js (4780B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 function documentURL(origin, html) {
      5  let params = new URLSearchParams();
      6  params.append("html", html.trim());
      7  return `${origin}/document-builder.sjs?${params.toString()}`;
      8 }
      9 
     10 add_task(async function checkIsActiveInTab() {
     11  // This test creates a few tricky situations with navigation and iframes and
     12  // examines the results of various ways you might think to check if a page
     13  // is currently visible, and confirms that isActiveInTab works, even if the
     14  // others don't.
     15 
     16  // Make a top level page with two nested iframes.
     17  const IFRAME2_URL = documentURL("https://example.com", `<h1>iframe2</h1>`);
     18  const IFRAME1_URL = documentURL(
     19    "https://example.com",
     20    `<iframe src=${JSON.stringify(IFRAME2_URL)}></iframe><h1>iframe1</h1>`
     21  );
     22  const TEST_URL = documentURL(
     23    "https://example.com",
     24    `<iframe src=${JSON.stringify(IFRAME1_URL)}></iframe><h1>top window</h1>`
     25  );
     26 
     27  await BrowserTestUtils.withNewTab(TEST_URL, async browser => {
     28    let topBC1 = browser.browsingContext;
     29    let topWindowGlobal1 = topBC1.currentWindowGlobal;
     30 
     31    is(
     32      browser.browsingContext.children.length,
     33      1,
     34      "only one child for top window"
     35    );
     36    let iframe1 = browser.browsingContext.children[0];
     37    let iframeWindowGlobal1a = iframe1.currentWindowGlobal;
     38 
     39    is(iframe1.children.length, 1, "only one child for iframe");
     40    let iframe2 = iframe1.children[0];
     41    let iframeWindowGlobal2 = iframe2.currentWindowGlobal;
     42 
     43    ok(topWindowGlobal1.isActiveInTab, "top window global is active in tab");
     44    ok(iframeWindowGlobal1a.isActiveInTab, "topmost iframe is active in tab");
     45    ok(iframeWindowGlobal2.isActiveInTab, "innermost iframe is active in tab");
     46 
     47    // Do a same-origin navigation on the topmost iframe.
     48    let iframe1bURI =
     49      "https://example.com/browser/dom/ipc/tests/file_dummy.html";
     50    let loadedIframe = BrowserTestUtils.browserLoaded(
     51      browser,
     52      true,
     53      iframe1bURI
     54    );
     55    await SpecialPowers.spawn(
     56      iframe1,
     57      [iframe1bURI],
     58      async function (_iframe1bURI) {
     59        content.location = _iframe1bURI;
     60      }
     61    );
     62    await loadedIframe;
     63 
     64    ok(
     65      topWindowGlobal1.isActiveInTab,
     66      "top window global is still active in tab"
     67    );
     68 
     69    let iframeWindowGlobal1b = iframe1.currentWindowGlobal;
     70    isnot(
     71      iframeWindowGlobal1a,
     72      iframeWindowGlobal1b,
     73      "navigating changed the iframe's current window"
     74    );
     75 
     76    // This tests the !CanSend() case but unfortunately not the
     77    // `bc->GetCurrentWindowGlobal() != this` case. Apparently the latter will
     78    // only hold temporarily, so that is likely hard to test.
     79    ok(
     80      !iframeWindowGlobal1a.isActiveInTab,
     81      "topmost iframe is not active in tab"
     82    );
     83 
     84    ok(iframeWindowGlobal1b.isActiveInTab, "new iframe is active in tab");
     85 
     86    is(
     87      iframe2.currentWindowGlobal,
     88      iframeWindowGlobal2,
     89      "innermost iframe current window global has not changed"
     90    );
     91 
     92    ok(
     93      iframeWindowGlobal2.isCurrentGlobal,
     94      "innermost iframe is still the current global for its BC"
     95    );
     96 
     97    // With a same-origin navigation, this hits the !bc->AncestorsAreCurrent()
     98    // case. (With a cross-origin navigation, this hits the !CanSend() case.)
     99    ok(
    100      !iframeWindowGlobal2.isActiveInTab,
    101      "innermost iframe is not active in tab"
    102    );
    103 
    104    // Load a new page into the tab to test the behavior when a page is in
    105    // the BFCache.
    106    let newTopURI = "https://example.com/browser/dom/ipc/tests/file_dummy.html";
    107    let loadedTop2 = BrowserTestUtils.browserLoaded(browser, false, newTopURI);
    108    await BrowserTestUtils.startLoadingURIString(browser, newTopURI);
    109    await loadedTop2;
    110 
    111    isnot(browser.browsingContext, topBC1, "Navigated to a new BC");
    112 
    113    is(
    114      topBC1.currentWindowGlobal,
    115      topWindowGlobal1,
    116      "old top window is still the current window global for the old BC"
    117    );
    118    ok(topWindowGlobal1.isInBFCache, "old top window's BC is in the BFCache");
    119    ok(!topWindowGlobal1.isCurrentGlobal, "old top frame isn't current");
    120    ok(!topWindowGlobal1.isActiveInTab, "old top frame not active in tab");
    121 
    122    is(
    123      iframe1.currentWindowGlobal,
    124      iframeWindowGlobal1b,
    125      "old iframe is still the current window global for the BC"
    126    );
    127    ok(!iframeWindowGlobal1b.isCurrentGlobal, "newer top iframe isn't current");
    128    ok(
    129      iframeWindowGlobal1b.isInBFCache,
    130      "old top window's BC is in the BFCache"
    131    );
    132    ok(iframe1.ancestorsAreCurrent, "ancestors of iframe are current");
    133    ok(
    134      !iframeWindowGlobal1b.isActiveInTab,
    135      "newer top iframe is active in not active in tab after top level navigation"
    136    );
    137  });
    138 });