<!DOCTYPE HTML>
<html>
<head>
  <title>Test nsIDOMWindowUtils</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
  <style>
    html, body, div {
      padding: 0;
      margin: 0;
    }

    div.test {
      position: absolute;
      height: 10px;
      width: 10px;
    }
  </style>
</head>

<body id="body">

<div class="test" id="onscreen" style="top: 100px; background-color: red;"></div>
<div class="test" id="offscreen" style="top: 100000px; background-color: green;"></div>

<script type="application/javascript">

SimpleTest.waitForExplicitFinish();

var domWindowUtils = SpecialPowers.getDOMWindowUtils(window);

var gTests = [
/*
  Element elementFromPoint(in long aX,
                           in long aY,
                           in boolean aIgnoreRootScrollFrame,
                           in boolean aFlushLayout);
*/
async function testElementFromPoint() {
  let onscreen = document.getElementById("onscreen");
  let offscreen = document.getElementById("offscreen");
  let htmldoc = document.documentElement;
  ok(onscreen, "on screen element exists");
  ok(offscreen, "off screen element exists");
  ok(htmldoc, "htmldoc element exists");

  let testData = [
    // default behavior is to return null for items outside the viewport
    [[0, 100], null, onscreen],
    [[9, 109], null, onscreen],
    [[0, 100000], null, null],
    [[9, 100009], null, null],

    // ignore scroll frame
    [[0, 100, true, false], null, onscreen],
    [[9, 109, true, false], null, onscreen],
    [[0, 100000, true, false], null, offscreen],
    [[9, 100009, true, false], null, offscreen],

    // layout flush tests
    // test moving element 10px to the left and down, and flushing layout
    [[10, 110, false, true], [[10, 110], onscreen], onscreen],
    // test moving element back, not flushing layout
    // (will get the html document instead)
    [[0, 100, false, false], [[0, 100], onscreen], htmldoc],
    // test element at same position, flushing layout
    [[0, 100, false, true], [[0, 100], onscreen], onscreen],

    // same tests repeated for offscreen element
    [[10, 100010, true, true], [[10, 100010], offscreen], offscreen],
    [[0, 100000, true, false], [[0, 100000], offscreen], htmldoc],
    [[0, 100000, true, true], [[0, 100000], offscreen], offscreen],
  ];

  for (let i = 0; i < testData.length; ++i) {
    let [x, y, ignoreScroll, flushLayout] = testData[i][0];
    let moveData = testData[i][1];
    let expected = testData[i][2];

    if (moveData) {
      let moveEl = moveData[1];
      let [moveX, moveY] = moveData[0];

      moveEl.style.left = moveX + "px";
      moveEl.style.top = moveY + "px";
    }
    let found = SpecialPowers.unwrap(domWindowUtils.elementFromPoint(
                                     x, y, ignoreScroll, flushLayout));
    is(found, expected, "at index " + i + " for data " + JSON.stringify(testData[i][0]));
  }
},

/**
 * Test .isHandlingUserInput attribute.
 */
async function testHandlingUserInput() {
  ok('isHandlingUserInput' in domWindowUtils,
     "isHandlingUserInput should be present");

  is(domWindowUtils.isHandlingUserInput, false,
     "isHandlingUserInput should return false if nothing is happening");

  var data = [
    {
      eventName: "click",
      result: true,
    },
    {
      eventName: "auxclick",
      button: 1,
      result: true,
    },
    {
      eventName: "mousemove",
      result: false,
    },
    {
      eventName: "mouseup",
      result: true,
    },
    {
      eventName: "mousedown",
      result: true,
    },
    {
      eventName: "keydown",
      result: true,
    },
    {
      eventName: "keyup",
      result: true,
    },
  ];

  for (const {eventName, result, button} of data) {
    let eventPromise = new Promise(resolve => {
      document.addEventListener(eventName, function() {
        is(domWindowUtils.isHandlingUserInput, result,
           `isHandlingUserInput should be ${result} for ${eventName}`);

        SimpleTest.executeSoon(resolve);
      }, {once: true});
    });

    SimpleTest.executeSoon(function() {
      if (eventName == "click") {
        synthesizeMouseAtCenter(document.body, {});
      } else if (eventName == "auxclick" && button) {
        synthesizeMouseAtCenter(document.body, { button });
      } else if (eventName.startsWith("key")) {
        synthesizeKey("VK_A", { type: eventName });
      } else {
        synthesizeMouseAtCenter(document.body, { type: eventName });
      }
    });

    await eventPromise;
  }
},
];

async function runner() {
  for (let i=0; i<gTests.length; ++i) {
    if (i > 0) {
      await new Promise(r => SimpleTest.executeSoon(r));
    }
    await gTests[i]();
  }

  SimpleTest.finish();
};

// Run the test from onload, since the onscreen and offscreen divs should be in
// the right places by then.
addLoadEvent(runner);

</script>

<p id="display"></p>

</body>
</html>
