/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* Any copyright is dedicated to the Public Domain.
 http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Tests that a used font-family is highlighted in the rule-view.

const TEST_URI = `
  <style type="text/css">
    #id1 {
      font-family: foo, bar, sans-serif;
    }
    #id2 {
      font-family: serif;
    }
    #id3 {
      font-family: foo, monospace, monospace, serif;
    }
    #id4 {
      font-family: foo, bar;
    }
    #id5 {
      font-family: "monospace";
    }
    #id6 {
      font-family: georgia, arial;
    }
  </style>
  <div id="id1">Text</div>
  <div id="id2">Text</div>
  <div id="id3">Text</div>
  <div id="id4">Text</div>
  <div id="id5">Text</div>
  <div id="id6">A &#586;</div>
`;

// Tests that font-family properties in the rule-view correctly
// indicates which font is in use.
// Each entry in the test array should contain:
// {
//   selector: the rule-view selector to look for font-family in
//   nb: the number of fonts this property should have
//   used: the indexes of all the fonts that should be highlighted, or null if none should
//         be highlighter
// }
const TESTS = [
  {selector: "#id1", nb: 3, used: [2]}, // sans-serif
  {selector: "#id2", nb: 1, used: [0]}, // serif
  {selector: "#id3", nb: 4, used: [1]}, // monospace
  {selector: "#id4", nb: 2, used: null},
  {selector: "#id5", nb: 1, used: [0]}, // monospace
];

if (Services.appinfo.OS !== "Linux") {
  // Both georgia and arial are used because the second character can't be rendered with
  // georgia, so the browser falls back. Also, skip this on Linux which has neither of
  // these fonts.
  TESTS.push({selector: "#id6", nb: 2, used: [0, 1]});
}

add_task(async function() {
  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
  let {inspector, view} = await openRuleView();

  for (let {selector, nb, used} of TESTS) {
    let onFontHighlighted = view.once("font-highlighted");
    await selectNode(selector, inspector);
    await onFontHighlighted;

    info("Looking for fonts in font-family property in selector " + selector);

    let prop = getRuleViewProperty(view, selector, "font-family").valueSpan;
    let fonts = prop.querySelectorAll(".ruleview-font-family");

    ok(fonts.length, "Fonts found in the property");
    is(fonts.length, nb, "Correct number of fonts found in the property");

    const highlighted = [...fonts].filter(span => span.classList.contains("used-font"));
    const expectedHighlightedNb = used === null ? 0 : used.length;
    is(highlighted.length, expectedHighlightedNb, "Correct number of used fonts found");

    let highlightedIndex = 0;
    [...fonts].forEach((font, index) => {
      if (font === highlighted[highlightedIndex]) {
        is(index, used[highlightedIndex], "The right font is highlighted");
        highlightedIndex++;
      }
    });
  }
});
