browser_html_tooltip_doorhanger-02.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

/* import-globals-from helper_html_tooltip.js */

"use strict";

/**

 * Test the HTMLTooltip "doorhanger" type's arrow tip is precisely centered on

 * the anchor when the anchor is small.

*/

const HTML_NS = "http://www.w3.org/1999/xhtml";

const TEST_URI = CHROME_URL_ROOT + "doc_html_tooltip_doorhanger-02.xhtml";

const {

  HTMLTooltip,

} = require("resource://devtools/client/shared/widgets/tooltip/HTMLTooltip.js");

loadHelperScript("helper_html_tooltip.js");

let useXulWrapper;

add_task(async function () {

  // Force the toolbox to be 200px high;

  await pushPref("devtools.toolbox.footer.height", 200);

  await addTab("about:blank");

  const { doc } = await createHost("bottom", TEST_URI);

  info("Run tests for a Tooltip without using a XUL panel");

  useXulWrapper = false;

  await runTests(doc);

  info("Run tests for a Tooltip with a XUL panel");

  useXulWrapper = true;

  await runTests(doc);

});

async function runTests(doc) {

  info("Create HTML tooltip");

  const tooltip = new HTMLTooltip(doc, { type: "doorhanger", useXulWrapper });

  const div = doc.createElementNS(HTML_NS, "div");

  div.style.width = "200px";

  div.style.height = "35px";

  tooltip.panel.appendChild(div);

  const elements = [...doc.querySelectorAll(".anchor")];

  for (const el of elements) {

    info("Display the tooltip on an anchor.");

    await showTooltip(tooltip, el);

    const arrow = tooltip.arrow;

    ok(arrow, "Tooltip has an arrow");

    // Get the geometry of the anchor and arrow.

    const anchorBounds = el.getBoxQuads({ relativeTo: doc })[0].getBounds();

    const arrowBounds = arrow.getBoxQuads({ relativeTo: doc })[0].getBounds();

    // Compare the centers

    const center = bounds => bounds.left + bounds.width / 2;

    const delta = Math.abs(center(anchorBounds) - center(arrowBounds));

    const describeBounds = bounds =>

      `${bounds.left}<--[${center(bounds)}]-->${bounds.right}`;

    const params =

      `anchor: ${describeBounds(anchorBounds)}, ` +

      `arrow: ${describeBounds(arrowBounds)}`;

    Assert.lessOrEqual(

      delta,

1,

      `Arrow center is roughly aligned with anchor center (${params})`

);

    await hideTooltip(tooltip);

  tooltip.destroy();