Quelle test_zoom_restore_bfcache.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/layout/base/tests/test_zoom_restore_bfcache.html

<!doctype html>
<meta charset="utf-8">
<title>Test for zoom restoration when coming from the bfcache</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<script>
SimpleTest.waitForExplicitFinish();

/**
* - main page (this one) opens file_zoom_restore_bfcache.html
* - file_zoom_restore_bfcache.html sends "handlePageShow" to main page
* - main page sends file_zoom_restore_bfcache.html "case1sendData"
* - file_zoom_restore_bfcache.html sends "case1data" to main page
* - main page sends "case1click" to file_zoom_restore_bfcache.html
* - file_zoom_restore_bfcache.html clicks on <a> element, navigating to uri
*   file_zoom_restore_bfcache.html?2, and gets bfcached
* - file_zoom_restore_bfcache.html?2 sends "handlePageShow" to main page
* - main page sends "case2sendData" to file_zoom_restore_bfcache.html?2
* - file_zoom_restore_bfcache.html?2 sends "case2data" to main page
* - main page sends "case2action" to file_zoom_restore_bfcache.html?2
* - file_zoom_restore_bfcache.html?2 sends "case2dataAnimationFrame" to main page
* - main page sends "case2back" to file_zoom_restore_bfcache.html?2
* - file_zoom_restore_bfcache.html?2 navigates back to file_zoom_restore_bfcache.html
* - file_zoom_restore_bfcache.html sends "handlePageShow" to main page
* - main page sends "case3sendData to file_zoom_restore_bfcache.html
* - file_zoom_restore_bfcache.html sends "case3data" to main page
* - main page sends "close to file_zoom_restore_bfcache.html
* - file_zoom_restore_bfcache.html closes bc and window and sends back "closed"
**/

const originalDPR = window.devicePixelRatio;
let loadCount = 0;
var bc = new BroadcastChannel("zoomRestoreBfcache");
var bcPage2 = new BroadcastChannel("zoomRestoreBfcache?2");
bc.onmessage = (msgEvent) => {
  var msg = msgEvent.data;
  var command = msg.command;
  info(`Main page, received command from normal bc=${command}`);
  switch (command) {
    case "handlePageShow": {
      handlePageShow(msgEvent.data.eventPersisted);
      break;
    }
    case "case1data": {
      is(loadCount, 1, "Case 1");
      is(msg.devicePixelRatio, originalDPR, "No zoom");
      bc.postMessage({command: "case1click"});
      // The end of case 1
      break;
    }
    case "case3data": {
      is(loadCount, 2, "Case 3");
      is(msg.devicePixelRatio, originalDPR * 2, "Should preserve zoom when restored");
      let is_if_ship = SpecialPowers.Services.appinfo.sessionHistoryInParent ? is : todo_is;
      is_if_ship(msg.frameDevicePixelRatio, originalDPR * 2, "Should preserve zoom on frames too");
      bc.postMessage({command: "close"});
      // Now we wait for "closed"
      break;
    }
    case "closed": {
      is(loadCount, 2, "Case 3");
      bc.close();
      SimpleTest.finish();
      break;
    }
    default:
      ok(false, "should not receive extra messages via BroadcastChannel");
  }
}
bcPage2.onmessage = (msgEvent) => {
  var msg = msgEvent.data;
  var command = msg.command;
  info(`Main page, received command from bc?2=${command}`);
  switch (command) {
    case "handlePageShow": {
      handlePageShow(msgEvent.data.eventPersisted);
      break;
    }
    case "case2data": {
      is(loadCount, 2, "Case 2");
      is(msg.devicePixelRatio, originalDPR, "No zoom (yet)")
      is(msg.frameDevicePixelRatio, originalDPR, "No zoom on frame either");
      bcPage2.postMessage({command: "case2action"});
      // Now we wait for "case2dataAnimationFrame"
      break;
    }
    case "case2dataAnimationFrame": {
      is(loadCount, 2, "Case 2");
      is(msg.devicePixelRatio, originalDPR * 2, "Zoomed");
      is(msg.frameDevicePixelRatio, originalDPR * 2, "Zoomed iframe too");
      bcPage2.postMessage({command: "case2back"});
      bcPage2.close();
      // The end of case 2
      break;
    }
    default:
      ok(false, "should not receive extra messages via BroadcastChannel");
  }
}
function handlePageShow(persisted) {
  ok(typeof persisted == "boolean", "Should get the persisted state from the pageshow event");
  if (loadCount == 2) {
    ok(persisted,  "Should've gone into the bfcache after the back navigation");
  } else {
    ok(!persisted,  "Should NOT be retrieved from bfcache");
  }

  if (loadCount == 0) {
    loadCount++;
    bc.postMessage({command: "case1sendData"});
    // Now we wait for the "case1data" message
  } else if (loadCount == 1) {
    loadCount++;
    bcPage2.postMessage({command: "case2sendData"});
    // Now we wait for the "case2data" message
  } else {
    bc.postMessage({command: "case3sendData"});
    // Now we wait for the "case3data" message
  }
}

// We want to test Gecko's zoom handling, not the front-end's.
SpecialPowers.pushPrefEnv({set: [["browser.zoom.siteSpecific", false]]}, () => {
  window.open('file_zoom_restore_bfcache.html', '_blank', 'noopener');
});
</script>

Messung V0.5

¤ Dauer der Verarbeitung: 0.4 Sekunden ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.