/* Any copyright is dedicated to the Public Domain.
 http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test that the rule and computed views refresh when style changes that impact the
// current selection occur.
// This test does not need to worry about the correctness of the styles and rules
// displayed in these views (other tests do this) but only cares that they do catch the
// change.

const TEST_URI = TEST_URL_ROOT + "doc_content_style_changes.html";

const TEST_DATA = [
  {
    target: "#test",
    className: "green-class",
    force: true,
  },
  {
    target: "#test",
    className: "green-class",
    force: false,
  },
  {
    target: "#parent",
    className: "purple-class",
    force: true,
  },
  {
    target: "#parent",
    className: "purple-class",
    force: false,
  },
  {
    target: "#sibling",
    className: "blue-class",
    force: true,
  },
  {
    target: "#sibling",
    className: "blue-class",
    force: false,
  },
];

add_task(async function () {
  const tab = await addTab(TEST_URI);

  const { inspector } = await openRuleView();
  await selectNode("#test", inspector);

  info("Run the test on the rule-view");
  await runViewTest(inspector, tab, "rule");

  info("Switch to the computed view");
  const onComputedViewReady = inspector.once("computed-view-refreshed");
  selectComputedView(inspector);
  await onComputedViewReady;

  info("Run the test again on the computed view");
  await runViewTest(inspector, tab, "computed");
});

async function runViewTest(inspector, tab, viewName) {
  for (const { target, className, force } of TEST_DATA) {
    info(
      (force ? "Adding" : "Removing") +
        ` class ${className} on ${target} and expecting a ${viewName}-view refresh`
    );

    await toggleClassAndWaitForViewChange(
      { target, className, force },
      inspector,
      tab,
      `${viewName}-view-refreshed`
    );
  }
}

async function toggleClassAndWaitForViewChange(
  whatToMutate,
  inspector,
  tab,
  eventName
) {
  const onRefreshed = inspector.once(eventName);

  await SpecialPowers.spawn(
    tab.linkedBrowser,
    [whatToMutate],
    function ({ target, className, force }) {
      content.document.querySelector(target).classList.toggle(className, force);
    }
  );

  await onRefreshed;
  ok(true, "The view was refreshed after the class was changed");
}