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"use strict";
requestLongerTimeout(2);
/**
* Tests that scrolling the tab strip via the scroll buttons scrolls the right
* amount in non-smoothscroll mode.
*/
add_task(async function () {
let arrowScrollbox = gBrowser.tabContainer.arrowScrollbox;
let scrollbox = arrowScrollbox.scrollbox;
let rect = ele => ele.getBoundingClientRect();
let width = ele => rect(ele).width;
let left = ele => rect(ele).left;
let right = ele => rect(ele).right;
let isLeft = (ele, msg) => is(left(ele), left(scrollbox), msg);
let isRight = (ele, msg) => is(right(ele), right(scrollbox), msg);
let elementFromPoint = x => arrowScrollbox._elementFromPoint(x);
let nextLeftElement = () => elementFromPoint(left(scrollbox) - 1);
let nextRightElement = () => elementFromPoint(right(scrollbox) + 1);
let firstScrollable = () => gBrowser.tabs[gBrowser._numPinnedTabs];
let waitForNextFrame = async function () {
await new Promise(requestAnimationFrame);
await new Promise(resolve => Services.tm.dispatchToMainThread(resolve));
};
await BrowserTestUtils.overflowTabs(registerCleanupFunction, window, {
overflowAtStart: false,
overflowTabFactor: 3,
});
gBrowser.pinTab(gBrowser.tabs[0]);
await BrowserTestUtils.waitForCondition(() => {
return Array.from(gBrowser.tabs).every(tab => tab._fullyOpen);
});
ok(
arrowScrollbox.hasAttribute("overflowing"),
"Tab strip should be overflowing"
);
let upButton = arrowScrollbox._scrollButtonUp;
let downButton = arrowScrollbox._scrollButtonDown;
let element;
gBrowser.selectedTab = firstScrollable();
await TestUtils.waitForTick();
Assert.lessOrEqual(
left(scrollbox),
left(firstScrollable()),
"Selecting the first tab scrolls it into view " +
"(" +
left(scrollbox) +
" <= " +
left(firstScrollable()) +
")"
);
element = nextRightElement();
EventUtils.synthesizeMouseAtCenter(downButton, {});
await waitForNextFrame();
isRight(element, "Scrolled one tab to the right with a single click");
gBrowser.selectedTab = gBrowser.tabs[gBrowser.tabs.length - 1];
await waitForNextFrame();
Assert.lessOrEqual(
right(gBrowser.selectedTab),
right(scrollbox),
"Selecting the last tab scrolls it into view " +
"(" +
right(gBrowser.selectedTab) +
" <= " +
right(scrollbox) +
")"
);
element = nextLeftElement();
EventUtils.synthesizeMouseAtCenter(upButton, {});
await waitForNextFrame();
isLeft(element, "Scrolled one tab to the left with a single click");
let elementPoint = left(scrollbox) - width(scrollbox);
element = elementFromPoint(elementPoint);
element = element.nextElementSibling;
EventUtils.synthesizeMouseAtCenter(upButton, { clickCount: 2 });
await waitForNextFrame();
await BrowserTestUtils.waitForCondition(
() => !gBrowser.tabContainer.arrowScrollbox._isScrolling
);
isLeft(element, "Scrolled one page of tabs with a double click");
EventUtils.synthesizeMouseAtCenter(upButton, { clickCount: 3 });
await waitForNextFrame();
var firstScrollableLeft = left(firstScrollable());
Assert.lessOrEqual(
left(scrollbox),
firstScrollableLeft,
"Scrolled to the start with a triple click " +
"(" +
left(scrollbox) +
" <= " +
firstScrollableLeft +
")"
);
while (gBrowser.tabs.length > 1) {
BrowserTestUtils.removeTab(gBrowser.tabs[0]);
}
});
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