Quelle  test_synthmousemove_after_dnd.html   Sprache: HTML

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name=viewport content="width=device-width,initial-scale=1">
<title>Test synthesized mouse move after drag and drop</title>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script>
"use strict";

SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(async () => {
  const source = document.getElementById("source");
  const target = document.getElementById("target");

  for (const type of ["dragover", "dragenter"]) {
    target.addEventListener(type, event => {
      event.dataTransfer.dropEffect = "copy";
      event.preventDefault();
    });
  }

  await (async function test_basic() {
    const promiseDrop = new Promise(resolve => {
      target.addEventListener("drop", event => {
        event.preventDefault();
        isnot(
          document.querySelector("span:hover"),
          target,
          "The target should not have hover state during the drop event propagation"
        );
        info("Waiting for mouseover event after drop event...");
        target.addEventListener("mouseover", () => {
          info("Got mouseover event");
          resolve();
        }, {once: true});
      }, { once: true });
    });
    info("Dragging selection is the source element and drop it to the target...");
    getSelection().selectAllChildren(source);
    synthesizePlainDragAndDrop({
      srcSelection: getSelection(),
      destElement: target,
    });
    await promiseDrop;
    await new Promise(resolve =>
      requestAnimationFrame(() => requestAnimationFrame(resolve))
    );
    is(
      document.querySelector("span:hover"),
      target,
      "test_basic: The drop target should have hover state"
    );
  })();

  document.querySelector("style").remove();
  SimpleTest.finish();
});
</script>
<style>
* {
  font-size: 48px;
}
</style>
</head>
<body>
  <div>
    <span id="source">Drag me!</span>
  </div>
  <div>
    <span id="target">Drop here!</span>
  </div>
</body>
</html>