The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/browser/devtools/netmonitor/test/browser_net_autoscroll.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,90 @@
     1.4 +/* Any copyright is dedicated to the Public Domain.
     1.5 +   http://creativecommons.org/publicdomain/zero/1.0/ */
     1.6 +
     1.7 +/**
     1.8 + * Bug 863102 - Automatically scroll down upon new network requests.
     1.9 + */
    1.10 +
    1.11 +function test() {
    1.12 +  requestLongerTimeout(2);
    1.13 +  let monitor, debuggee, requestsContainer, scrollTop;
    1.14 +
    1.15 +  initNetMonitor(INFINITE_GET_URL).then(([aTab, aDebuggee, aMonitor]) => {
    1.16 +    monitor = aMonitor;
    1.17 +    debuggee = aDebuggee;
    1.18 +    let win = monitor.panelWin;
    1.19 +    let topNode = win.document.getElementById("requests-menu-contents");
    1.20 +    requestsContainer = topNode.getElementsByTagName("scrollbox")[0];
    1.21 +    ok(!!requestsContainer, "Container element exists as expected.");
    1.22 +  })
    1.23 +
    1.24 +  // (1) Check that the scroll position is maintained at the bottom
    1.25 +  // when the requests overflow the vertical size of the container.
    1.26 +  .then(() => {
    1.27 +    return waitForRequestsToOverflowContainer(monitor, requestsContainer);
    1.28 +  })
    1.29 +  .then(() => {
    1.30 +    ok(scrolledToBottom(requestsContainer), "Scrolled to bottom on overflow.");
    1.31 +  })
    1.32 +
    1.33 +  // (2) Now set the scroll position somewhere in the middle and check
    1.34 +  // that additional requests do not change the scroll position.
    1.35 +  .then(() => {
    1.36 +    let children = requestsContainer.childNodes;
    1.37 +    let middleNode = children.item(children.length / 2);
    1.38 +    middleNode.scrollIntoView();
    1.39 +    ok(!scrolledToBottom(requestsContainer), "Not scrolled to bottom.");
    1.40 +    scrollTop = requestsContainer.scrollTop; // save for comparison later
    1.41 +    return waitForNetworkEvents(monitor, 8);
    1.42 +  })
    1.43 +  .then(() => {
    1.44 +    is(requestsContainer.scrollTop, scrollTop, "Did not scroll.");
    1.45 +  })
    1.46 +
    1.47 +  // (3) Now set the scroll position back at the bottom and check that
    1.48 +  // additional requests *do* cause the container to scroll down.
    1.49 +  .then(() => {
    1.50 +    requestsContainer.scrollTop = requestsContainer.scrollHeight;
    1.51 +    ok(scrolledToBottom(requestsContainer), "Set scroll position to bottom.");
    1.52 +    return waitForNetworkEvents(monitor, 8);
    1.53 +  })
    1.54 +  .then(() => {
    1.55 +    ok(scrolledToBottom(requestsContainer), "Still scrolled to bottom.");
    1.56 +  })
    1.57 +
    1.58 +  // (4) Now select an item in the list and check that additional requests
    1.59 +  // do not change the scroll position.
    1.60 +  .then(() => {
    1.61 +    monitor.panelWin.NetMonitorView.RequestsMenu.selectedIndex = 0;
    1.62 +    return waitForNetworkEvents(monitor, 8);
    1.63 +  })
    1.64 +  .then(() => {
    1.65 +    is(requestsContainer.scrollTop, 0, "Did not scroll.");
    1.66 +  })
    1.67 +
    1.68 +  // Done; clean up.
    1.69 +  .then(() => {
    1.70 +    return teardown(monitor).then(finish);
    1.71 +  })
    1.72 +
    1.73 +  // Handle exceptions in the chain of promises.
    1.74 +  .then(null, (err) => {
    1.75 +    ok(false, err);
    1.76 +    finish();
    1.77 +  });
    1.78 +
    1.79 +  function waitForRequestsToOverflowContainer (aMonitor, aContainer) {
    1.80 +    return waitForNetworkEvents(aMonitor, 1).then(() => {
    1.81 +      if (aContainer.scrollHeight > aContainer.clientHeight) {
    1.82 +        // Wait for some more just for good measure.
    1.83 +        return waitForNetworkEvents(aMonitor, 8);
    1.84 +      } else {
    1.85 +        return waitForRequestsToOverflowContainer(aMonitor, aContainer);
    1.86 +      }
    1.87 +    });
    1.88 +  }
    1.89 +
    1.90 +  function scrolledToBottom(aElement) {
    1.91 +    return aElement.scrollTop + aElement.clientHeight >= aElement.scrollHeight;
    1.92 +  }
    1.93 +}