<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Testing default action of `mousedown` of middle button and `mouseup` of middle button</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<style>
span {
  white-space: nowrap;
}
</style>
</head>
<body>
<div contenteditable></div>
<script>
"use strict";

var editor = document.querySelector("div[contenteditable]");
var span1, span2, link;
var selection = getSelection();

function preventDefault(event) {
  event.preventDefault();
}
editor.addEventListener("paste", preventDefault, {capture: true});

function resetEditor() {
  editor.innerHTML =
    '<span id="span1">first span.</span><br><span id="span2">second span.</span><br><a id="link" href="#top">link.</a>';
  span1 = document.getElementById("span1");
  span2 = document.getElementById("span2");
  link = document.getElementById("link");
}

promise_test(async () => {
  resetEditor();
  editor.blur();
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: span1})
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .send();

  assert_equals(document.activeElement, editor,
    "The clicked editor should get focus");
  assert_true(selection.isCollapsed,
    "Selection should be collapsed after middle button click");
  assert_equals(selection.focusNode, span1.firstChild,
    "Selection should be collapsed in the first <span> element which was clicked by middle button");
}, "Middle click should set focus to clicked editable element and collapse selection around the clicked point");

promise_test(async () => {
  resetEditor();
  editor.focus();
  selection.collapse(span1.firstChild, 2);
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: span2})
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .send();

  assert_equals(document.activeElement, editor,
    "The clicked editor should keep having focus");
  assert_true(selection.isCollapsed,
    "Selection should be collapsed after middle button click");
  assert_equals(selection.focusNode, span2.firstChild,
    "Selection should be collapsed in the second <span> element which was clicked by middle button");
}, "Middle click should move caret in an editable element");

promise_test(async () => {
  resetEditor();
  editor.focus();
  selection.collapse(span1.firstChild, 2);
  addEventListener("mousedown", preventDefault);
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: span2})
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .send();
  removeEventListener("mousedown", preventDefault);

  assert_equals(selection.focusNode, span1.firstChild,
    "Selection should keep collapsed selection in the first <span> element");
  assert_equals(selection.focusOffset, 2,
    "Selection should keep collapsed selection at 2 of the first <span> element");
}, "Middle click shouldn't move caret in an editable element if the default of mousedown event is prevented");

promise_test(async () => {
  resetEditor();
  editor.focus();
  selection.collapse(span1.firstChild, 2);
  addEventListener("pointerdown", preventDefault);
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: span2})
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .send();
  removeEventListener("pointerdown", preventDefault);

  assert_equals(selection.focusNode, span1.firstChild,
    "Selection should keep collapsed selection in the first <span> element");
  assert_equals(selection.focusOffset, 2,
    "Selection should keep collapsed selection at 2 of the first <span> element");
}, "Middle click shouldn't move caret in an editable element if the default of pointerdown event is prevented");

promise_test(async () => {
  resetEditor();
  editor.focus();
  selection.collapse(span1.firstChild, 2);
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: span2})
    .keyDown("\uE008")
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .keyUp("\uE008")
    .send();

  assert_equals(selection.anchorNode, span1.firstChild,
    "Selection#anchorNode should keep in the first <span> element");
  assert_equals(selection.anchorOffset, 2,
    "Selection#anchorNode should keep at 2 of the first <span> element");
  assert_equals(selection.focusNode, span2.firstChild,
    "Selection#focusNode should be in the second <span> element which was clicked by middle button");
}, "Shift + Middle click should extend the selection");

promise_test(async () => {
  resetEditor();
  editor.focus();
  selection.collapse(span1.firstChild, 2);
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: link})
    .keyDown("\uE008")
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .keyUp("\uE008")
    .send();

  assert_equals(selection.focusNode, link.firstChild,
    "Selection#focusNode should be in the <a href> element which was clicked by middle button");
  assert_true(selection.isCollapsed,
    "Selection#isCollapsed should be true");
}, "Shift + Middle click in a link shouldn't extend the selection");

promise_test(async () => {
  resetEditor();
  editor.focus();
  selection.collapse(span1.firstChild, 2);
  editor.addEventListener("pointerdown", () => {
    assert_true(selection.isCollapsed,
      "Selection shouldn't be modified before pointerdown event");
    assert_equals(selection.focusNode, span1.firstChild,
      "Selection should stay in the first <span> element when pointerdown event is fired (focusNode)");
    assert_equals(selection.focusOffset, 2,
      "Selection should stay in the first <span> element when pointerdown event is fired (focusOffset)");
  }, {once: true});
  editor.addEventListener("mousedown", () => {
    assert_true(selection.isCollapsed,
      "Selection shouldn't be modified before mousedown event");
    assert_equals(selection.focusNode, span1.firstChild,
      "Selection should stay in the first <span> element when mousedown event is fired (focusNode)");
    assert_equals(selection.focusOffset, 2,
      "Selection should stay in the first <span> element when mousedown event is fired (focusOffset)");
  }, {once: true});
  editor.addEventListener("pointerup", () => {
    assert_true(selection.isCollapsed,
      "Selection should be collapsed before pointerup event");
    assert_equals(selection.focusNode, span2.firstChild,
      "Selection should be collapsed in the second <span> element which was clicked by middle button before pointerup event ");
  }, {once: true});
  let focusOffsetAtMouseUp;
  editor.addEventListener("mouseup", () => {
    assert_true(selection.isCollapsed,
      "Selection should be collapsed before mouseup event");
    assert_equals(selection.focusNode, span2.firstChild,
      "Selection should be collapsed in the second <span> element which was clicked by middle button before mouseup event ");
    focusOffsetAtMouseUp = selection.focusOffset;
  }, {once: true});
  let actions = new test_driver.Actions();
  await actions
    .pointerMove(0, 0)
    .pointerMove(0, 0, {origin: span2})
    .pointerDown({button: actions.ButtonType.MIDDLE})
    .pointerMove(0, 0, {origin: span1})
    .pointerUp({button: actions.ButtonType.MIDDLE})
    .send();

  assert_true(selection.isCollapsed,
    "Selection shouldn't be extended by pointer moves during pressing middle button");
  assert_equals(selection.focusNode, span2.firstChild,
    "Selection#focusNode should stay in the second <span> element");
  assert_equals(selection.focusOffset, focusOffsetAtMouseUp,
    "Selection#focusOffset should stay in the second <span> element");
}, "Middle mouse button down should move caret, but middle mouse button up shouldn't move caret");

</script>
</body>
</html>
