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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
/**
* Bug 863102 - Automatically scroll down upon new network requests.
*/
add_task(function* () {
requestLongerTimeout(2);
let { monitor } = yield initNetMonitor(INFINITE_GET_URL);
let win = monitor.panelWin;
let topNode = win.document.getElementById("requests-menu-contents");
let requestsContainer = topNode.getElementsByTagName("scrollbox")[0];
ok(!!requestsContainer, "Container element exists as expected.");
// (1) Check that the scroll position is maintained at the bottom
// when the requests overflow the vertical size of the container.
yield waitForRequestsToOverflowContainer();
yield waitForScroll();
ok(scrolledToBottom(requestsContainer), "Scrolled to bottom on overflow.");
// (2) Now set the scroll position somewhere in the middle and check
// that additional requests do not change the scroll position.
let children = requestsContainer.childNodes;
let middleNode = children.item(children.length / 2);
middleNode.scrollIntoView();
ok(!scrolledToBottom(requestsContainer), "Not scrolled to bottom.");
// save for comparison later
let scrollTop = requestsContainer.scrollTop;
yield waitForNetworkEvents(monitor, 8);
yield waitSomeTime();
is(requestsContainer.scrollTop, scrollTop, "Did not scroll.");
// (3) Now set the scroll position back at the bottom and check that
// additional requests *do* cause the container to scroll down.
requestsContainer.scrollTop = requestsContainer.scrollHeight;
ok(scrolledToBottom(requestsContainer), "Set scroll position to bottom.");
yield waitForNetworkEvents(monitor, 8);
yield waitForScroll();
ok(scrolledToBottom(requestsContainer), "Still scrolled to bottom.");
// (4) Now select an item in the list and check that additional requests
// do not change the scroll position.
monitor.panelWin.NetMonitorView.RequestsMenu.selectedIndex = 0;
yield waitForNetworkEvents(monitor, 8);
yield waitSomeTime();
is(requestsContainer.scrollTop, 0, "Did not scroll.");
// Done: clean up.
yield teardown(monitor);
function* waitForRequestsToOverflowContainer() {
while (true) {
yield waitForNetworkEvents(monitor, 1);
if (requestsContainer.scrollHeight > requestsContainer.clientHeight) {
return;
}
}
}
function scrolledToBottom(element) {
return element.scrollTop + element.clientHeight >= element.scrollHeight;
}
function waitSomeTime() {
// Wait to make sure no scrolls happen
return wait(50);
}
function waitForScroll() {
return monitor._view.RequestsMenu.widget.once("scroll-to-bottom");
}
});
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