try-tactic-position-area.html

<!DOCTYPE html>

<title>CSS Anchor Positioning: try-tactic, position-area</title>

<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#typedef-position-try-fallbacks-try-tactic">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<style>

  #cb {

    position: absolute;

    width: 400px;

    height: 400px;

    border: 1px solid black;

  #anchor {

    position: absolute;

    left: 150px;

    top: 150px;

    width: 100px;

    height: 50px;

    background-color: coral;

  #target {

    position: absolute;

    left: 450px; /* force fallback */

    width: 40px;

    height: 40px;

    background-color: skyblue;

</style>

<style id=style>

</style>

<div id=cb>

  <div id=target></div>

</div>

<script>

function test_computed_value(try_tactic, property, value, expected, direction, writing_mode) {

  if (direction==undefined) {

    direction = 'ltr';

  if (writing_mode==undefined) {

    writing_mode = 'horizontal-tb';

  test((t) => {

    t.add_cleanup(() => {

      style.textContent = '';

      document.documentElement.style = '';

});

    document.documentElement.style.direction = direction;

    document.documentElement.style.writingMode = writing_mode;

    style.textContent = `

      @position-try --pf {

        inset: initial;

        ${property}:${value};

      #target {

        position-try-fallbacks: --pf ${try_tactic};

`;

    assert_equals(getComputedStyle(target).getPropertyValue(property), expected);

  }, `${try_tactic}, ${property}:${value}, ${direction} ${writing_mode}`);

// Physical:

test_computed_value('flip-inline', 'position-area', 'left top', 'right top');

test_computed_value('flip-inline', 'position-area', 'left bottom', 'right bottom');

test_computed_value('flip-inline', 'position-area', 'right bottom', 'left bottom');

test_computed_value('flip-inline', 'position-area', 'right top', 'left top');

test_computed_value('flip-block', 'position-area', 'left top', 'left bottom');

test_computed_value('flip-block', 'position-area', 'left bottom', 'left top');

test_computed_value('flip-block', 'position-area', 'right bottom', 'right top');

test_computed_value('flip-block', 'position-area', 'right top', 'right bottom');

test_computed_value('flip-block flip-inline', 'position-area', 'left top', 'right bottom');

test_computed_value('flip-block flip-inline', 'position-area', 'left bottom', 'right top');

test_computed_value('flip-block flip-inline', 'position-area', 'right bottom', 'left top');

test_computed_value('flip-block flip-inline', 'position-area', 'right top', 'left bottom');

test_computed_value('flip-start', 'position-area', 'left top', 'left top');

test_computed_value('flip-start', 'position-area', 'left bottom', 'right top');

test_computed_value('flip-start', 'position-area', 'right bottom', 'right bottom');

test_computed_value('flip-start', 'position-area', 'right top', 'left bottom');

test_computed_value('flip-block flip-start', 'position-area', 'left top', 'right top');

test_computed_value('flip-block flip-start', 'position-area', 'left bottom', 'left top');

test_computed_value('flip-block flip-start', 'position-area', 'right bottom', 'left bottom');

test_computed_value('flip-block flip-start', 'position-area', 'right top', 'right bottom');

test_computed_value('flip-inline flip-start', 'position-area', 'left top', 'left bottom');

test_computed_value('flip-inline flip-start', 'position-area', 'left bottom', 'right bottom');

test_computed_value('flip-inline flip-start', 'position-area', 'right bottom', 'right top');

test_computed_value('flip-inline flip-start', 'position-area', 'right top', 'left top');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'left top', 'right bottom');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'left bottom', 'left bottom');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'right bottom', 'left top');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'right top', 'right top');

// Variations:

test_computed_value('flip-block flip-inline', 'position-area', 'span-left span-top', 'span-right span-bottom');

// XY:

test_computed_value('flip-inline', 'position-area', 'x-start y-start', 'x-end y-start');

test_computed_value('flip-inline', 'position-area', 'x-start y-end', 'x-end y-end');

test_computed_value('flip-inline', 'position-area', 'x-end y-end', 'x-start y-end');

test_computed_value('flip-inline', 'position-area', 'x-end y-start', 'x-start y-start');

test_computed_value('flip-block', 'position-area', 'x-start y-start', 'x-start y-end');

test_computed_value('flip-block', 'position-area', 'x-start y-end', 'x-start y-start');

test_computed_value('flip-block', 'position-area', 'x-end y-end', 'x-end y-start');

test_computed_value('flip-block', 'position-area', 'x-end y-start', 'x-end y-end');

test_computed_value('flip-block flip-inline', 'position-area', 'x-start y-start', 'x-end y-end');

test_computed_value('flip-block flip-inline', 'position-area', 'x-start y-end', 'x-end y-start');

test_computed_value('flip-block flip-inline', 'position-area', 'x-end y-end', 'x-start y-start');

test_computed_value('flip-block flip-inline', 'position-area', 'x-end y-start', 'x-start y-end');

test_computed_value('flip-start', 'position-area', 'x-start y-start', 'x-start y-start');

test_computed_value('flip-start', 'position-area', 'x-start y-end', 'x-end y-start');

test_computed_value('flip-start', 'position-area', 'x-end y-end', 'x-end y-end');

test_computed_value('flip-start', 'position-area', 'x-end y-start', 'x-start y-end');

test_computed_value('flip-block flip-start', 'position-area', 'x-start y-start', 'x-end y-start');

test_computed_value('flip-block flip-start', 'position-area', 'x-start y-end', 'x-start y-start');

test_computed_value('flip-block flip-start', 'position-area', 'x-end y-end', 'x-start y-end');

test_computed_value('flip-block flip-start', 'position-area', 'x-end y-start', 'x-end y-end');

test_computed_value('flip-inline flip-start', 'position-area', 'x-start y-start', 'x-start y-end');

test_computed_value('flip-inline flip-start', 'position-area', 'x-start y-end', 'x-end y-end');

test_computed_value('flip-inline flip-start', 'position-area', 'x-end y-end', 'x-end y-start');

test_computed_value('flip-inline flip-start', 'position-area', 'x-end y-start', 'x-start y-start');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'x-start y-start', 'x-end y-end');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'x-start y-end', 'x-start y-end');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'x-end y-end', 'x-start y-start');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'x-end y-start', 'x-end y-start');

// Variations:

test_computed_value('flip-block flip-inline', 'position-area', 'span-x-start span-y-start', 'span-x-end span-y-end');

test_computed_value('flip-block flip-inline', 'position-area', 'x-self-start y-self-start', 'x-self-end y-self-end');

test_computed_value('flip-block flip-inline', 'position-area', 'span-x-self-start span-y-self-start', 'span-x-self-end span-y-self-end');

// Logical:

test_computed_value('flip-inline', 'position-area', 'block-start inline-start', 'block-start inline-end');

test_computed_value('flip-inline', 'position-area', 'block-end inline-start', 'block-end inline-end');

test_computed_value('flip-inline', 'position-area', 'block-end inline-end', 'block-end inline-start');

test_computed_value('flip-inline', 'position-area', 'block-start inline-end', 'block-start inline-start');

test_computed_value('flip-block', 'position-area', 'block-start inline-start', 'block-end inline-start');

test_computed_value('flip-block', 'position-area', 'block-end inline-start', 'block-start inline-start');

test_computed_value('flip-block', 'position-area', 'block-end inline-end', 'block-start inline-end');

test_computed_value('flip-block', 'position-area', 'block-start inline-end', 'block-end inline-end');

test_computed_value('flip-block flip-inline', 'position-area', 'block-start inline-start', 'block-end inline-end');

test_computed_value('flip-block flip-inline', 'position-area', 'block-end inline-start', 'block-start inline-end');

test_computed_value('flip-block flip-inline', 'position-area', 'block-end inline-end', 'block-start inline-start');

test_computed_value('flip-block flip-inline', 'position-area', 'block-start inline-end', 'block-end inline-start');

test_computed_value('flip-start', 'position-area', 'block-start inline-start', 'block-start inline-start');

test_computed_value('flip-start', 'position-area', 'block-end inline-start', 'block-start inline-end');

test_computed_value('flip-start', 'position-area', 'block-end inline-end', 'block-end inline-end');

test_computed_value('flip-start', 'position-area', 'block-start inline-end', 'block-end inline-start');

test_computed_value('flip-block flip-start', 'position-area', 'block-start inline-start', 'block-start inline-end');

test_computed_value('flip-block flip-start', 'position-area', 'block-end inline-start', 'block-start inline-start');

test_computed_value('flip-block flip-start', 'position-area', 'block-end inline-end', 'block-end inline-start');

test_computed_value('flip-block flip-start', 'position-area', 'block-start inline-end', 'block-end inline-end');

test_computed_value('flip-inline flip-start', 'position-area', 'block-start inline-start', 'block-end inline-start');

test_computed_value('flip-inline flip-start', 'position-area', 'block-end inline-start', 'block-end inline-end');

test_computed_value('flip-inline flip-start', 'position-area', 'block-end inline-end', 'block-start inline-end');

test_computed_value('flip-inline flip-start', 'position-area', 'block-start inline-end', 'block-start inline-start');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'block-start inline-start', 'block-end inline-end');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'block-end inline-start', 'block-end inline-start');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'block-end inline-end', 'block-start inline-start');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'block-start inline-end', 'block-start inline-end');

// Variations:

test_computed_value('flip-block flip-inline', 'position-area', 'span-block-start span-inline-start', 'span-block-end span-inline-end');

test_computed_value('flip-block flip-inline', 'position-area', 'self-block-start self-inline-start', 'self-block-end self-inline-end');

test_computed_value('flip-block flip-inline', 'position-area', 'span-self-block-start span-self-inline-start', 'span-self-block-end span-self-inline-end');

// start/end

test_computed_value('', 'position-area', 'start end', 'start end');

test_computed_value('flip-block', 'position-area', 'start end', 'end');

test_computed_value('flip-inline', 'position-area', 'start end', 'start');

test_computed_value('flip-block flip-inline', 'position-area', 'start end', 'end start');

test_computed_value('flip-start', 'position-area', 'start', 'start');

test_computed_value('flip-start', 'position-area', 'end', 'end');

test_computed_value('flip-start', 'position-area', 'start end', 'end start');

test_computed_value('flip-block flip-start', 'position-area', 'start end', 'end');

test_computed_value('flip-inline flip-start', 'position-area', 'start end', 'start');

test_computed_value('flip-block flip-inline flip-start', 'position-area', 'start end', 'start end');

// Variations:

test_computed_value('flip-block flip-inline', 'position-area', 'span-start span-end', 'span-end span-start');

test_computed_value('flip-block flip-inline', 'position-area', 'self-start self-end', 'self-end self-start');

test_computed_value('flip-block flip-inline', 'position-area', 'span-self-start span-self-end', 'span-self-end span-self-start');

// center

test_computed_value('flip-block', 'position-area', 'left center', 'left center');

test_computed_value('flip-block', 'position-area', 'center top', 'center bottom');

test_computed_value('flip-block', 'position-area', 'center', 'center');

test_computed_value('flip-block', 'position-area', 'start center', 'end center');

test_computed_value('flip-block', 'position-area', 'center start', 'center start');

test_computed_value('flip-inline', 'position-area', 'center start', 'center end');

test_computed_value('flip-start', 'position-area', 'center start', 'start center');

// span-all

test_computed_value('flip-block', 'position-area', 'left span-all', 'left');

test_computed_value('flip-block', 'position-area', 'span-all top', 'bottom');

test_computed_value('flip-block', 'position-area', 'span-all', 'span-all');

test_computed_value('flip-block', 'position-area', 'start span-all', 'end span-all');

test_computed_value('flip-block', 'position-area', 'span-all start', 'span-all start');

test_computed_value('flip-inline', 'position-area', 'span-all start', 'span-all end');

test_computed_value('flip-start', 'position-area', 'span-all start', 'start span-all');

// Span mix:

test_computed_value('flip-block', 'position-area', 'left span-top', 'left span-bottom');

test_computed_value('flip-inline', 'position-area', 'left span-top', 'right span-top');

test_computed_value('flip-start', 'position-area', 'span-block-start inline-end', 'block-end span-inline-start');

// Writing modes:

test_computed_value('flip-block', 'position-area', 'left top', 'right top', 'ltr', 'vertical-rl');

test_computed_value('', 'position-area', 'x-start y-start', 'x-start y-start', 'rtl');

test_computed_value('flip-block', 'position-area', 'x-start y-start', 'x-start y-end', 'rtl');

test_computed_value('flip-inline', 'position-area', 'x-start y-start', 'x-end y-start', 'rtl');

test_computed_value('flip-block', 'position-area', 'x-end y-start', 'x-start y-start', 'ltr', 'vertical-rl');

test_computed_value('flip-inline', 'position-area', 'x-end y-start', 'x-end y-end', 'ltr', 'vertical-rl');

test_computed_value('flip-inline', 'position-area', 'start end', 'start', 'rtl');

test_computed_value('flip-inline', 'position-area', 'start end', 'start', 'ltr', 'vertical-rl');

test_computed_value('flip-block', 'position-area', 'start end', 'end', 'rtl');

test_computed_value('flip-block', 'position-area', 'start end', 'end', 'ltr', 'vertical-rl');

</script>

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