<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Test for Clipboard Events</title>
  <script>
    var SimpleTest = opener.SimpleTest;
    var SpecialPowers = opener.SpecialPowers;
    var ok = opener.ok;
    var is = opener.is;
    var isnot = opener.isnot;
    var todo = opener.todo;
    var todo_is = opener.todo_is;
    var add_task = opener.add_task;
  </script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
</head>
<body>
<p id="display"></p>
<div id="content" style="border: 3px solid black; padding: 3em;">CONTENT TEXT<input id="content-input" value="INPUT TEXT"></div>
<img id="image" src="image_50.png">
<button id="button">Button</button>

<div id="syntheticSpot" oncut="compareSynthetic(event, 'cut')"
                        oncopy="compareSynthetic(event, 'copy')"
                        onpaste="compareSynthetic(event, 'paste')">Spot</div>

<div id="contenteditableContainer"></div>

<pre id="test">
<script class="testbody" type="text/javascript">
var content = document.getElementById("content");
var contentInput = document.getElementById("content-input");
var contenteditableContainer = document.getElementById("contenteditableContainer");
var clipboardInitialValue = "empty";

var cachedCutData, cachedCopyData, cachedPasteData;

ok(SpecialPowers.getBoolPref("dom.events.dataTransfer.protected.enabled"),
   "The following require dom.events.dataTransfer.protected.enabled is enabled");
isnot(typeof window.onbeforeinput, "undefined",
      "The following tests require onbeforeinput attribute");

// Before each test function is run, the clipboard is initialized
// to clipboardInitialValue, and the contents of div#content are
// set as the window's selection.

add_task(async function initialize_for_tests() {
  disableNonTestMouseEvents(true);

  await SimpleTest.promiseFocus(window);

  // Test that clearing and reading the clipboard works.  A random number
  // is used to make sure that leftover clipboard values from a previous
  // test run don't cause a false-positive test.
  try {
    var cb_text = "empty_" + Math.random();
    await putOnClipboard(cb_text, () => { setClipboardText(cb_text) },
                         "Failed to initial set/get clipboard text");
  } catch (e) {
    ok(false, e.toString());
  }
});

var eventListeners = [];

// Note that don't use EventTarget.addEventListener directly in this file
// because if it's remained in next test, it makes developers harder to
// investigate such oranges. addEventListenerTo cleans up when `reset()`
// is called by first of next test and then, all event listeners including
// marked as "once" are removed automatically.
function addEventListenerTo(aEventTarget, aEventType, aListener, aOptions) {
  eventListeners.push({
    target: aEventTarget,
    type: aEventType,
    listener: aListener,
    options: aOptions
  });
  aEventTarget.addEventListener(aEventType, aListener, aOptions);
}

async function reset() {
  [content, contentInput, document, document.documentElement].forEach(eventTarget => {
    ["oncut", "oncopy", "onpaste", "oninput", "onbeforeinput"].forEach(attr => {
      eventTarget[attr] = null;
    });
  });
  eventListeners.forEach(data => {
    data.target.removeEventListener(data.type, data.listener, data.options);
  });
  eventListeners = [];

  // Init clipboard
  await putOnClipboard(clipboardInitialValue,
                       () => { setClipboardText(clipboardInitialValue) },
                       "reset clipboard");

  // Reset value of editors.
  contentInput.value = "INPUT TEXT";
  contenteditableContainer.innerHTML = "";
}

function getClipboardText() {
  return SpecialPowers.getClipboardData("text/plain");
}

function getHTMLEditor() {
  let editingSession = SpecialPowers.wrap(window).docShell.editingSession;
  if (!editingSession) {
    return null;
  }
  let editor = editingSession.getEditorForWindow(window);
  if (!editor) {
    return null;
  }
  return editor.QueryInterface(SpecialPowers.Ci.nsIHTMLEditor);
}

async function putOnClipboard(expected, operationFn, desc, type) {
  try {
    await SimpleTest.promiseClipboardChange(expected, operationFn, type, 1000);
  } catch (e) {
    throw `Failed "${desc}" due to "${e.toString()}"`
  }
}

async function wontPutOnClipboard(unexpectedData, operationFn, desc, type) {
  try {
    // SimpleTest.promiseClipboardChange() doesn't throw exception when
    // it unexpectedly succeeds to copy something.  Therefore, we need
    // to throw an exception by ourselves.
    await SimpleTest.promiseClipboardChange(null, operationFn, type, 300, true, false)
                    .then(aData => {
                      if (aData == unexpectedData) {
                        throw `Failed "${desc}", the clipboard data is modified to "${aData.toString()}"`;
                      }
                    });
  } catch (e) {
    throw `Failed "${desc}" due to "${e.toString()}"`
  }
}

function setClipboardText(text) {
  var helper = SpecialPowers.Cc["@mozilla.org/widget/clipboardhelper;1"]
    .getService(SpecialPowers.Ci.nsIClipboardHelper);
  helper.copyString(text);
}

function selectContentDiv() {
  // Set selection
  var selection = window.getSelection();
  selection.removeAllRanges();
  selection.selectAllChildren(content);
}

function selectContentInput() {
  contentInput.focus();
  contentInput.select();
}

add_task(async function test_dom_oncopy() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncopy event handler, fire copy.  Ensure that the event
  // handler was called, and the clipboard contents have set to CONTENT TEXT.
  // Test firing oncopy event on ctrl-c:
  selectContentDiv();

  var oncopy_fired = false;
  content.oncopy = function() { oncopy_fired = true; };
  try {
    await putOnClipboard("CONTENT TEXT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy on DOM element set clipboard correctly");
    ok(oncopy_fired, "copy event firing on DOM element");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_dom_oncut() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncut event handler, fire cut.  Ensure that the event handler
  // was called.  The <div> doesn't handle a cut, so ensure that the
  // clipboard text shouldn't be "CONTENT TEXT".
  selectContentDiv();
  var oncut_fired = false;
  content.oncut = function() { oncut_fired = true; };
  try {
    await wontPutOnClipboard("CONTENT TEXT", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "cut on DOM element set clipboard correctly");
    ok(oncut_fired, "cut event firing on DOM element")
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_dom_onpaste() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an onpaste event handler, fire paste.  Ensure that the event
  // handler was called.
  selectContentDiv();
  var onpaste_fired = false;
  content.onpaste = function() { onpaste_fired = true; };
  synthesizeKey("v", {accelKey: 1});
  ok(onpaste_fired, "paste event firing on DOM element");
});

add_task(async function test_dom_oncopy_abort() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncopy event handler that aborts the copy, and fire the copy
  // event.  Ensure that the event handler was fired, and the clipboard
  // contents have not been modified.
  selectContentDiv();
  var oncopy_fired = false;
  content.oncopy = function() { oncopy_fired = true; return false; };
  try {
    await wontPutOnClipboard("CONTENT TEXT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "aborted copy on DOM element did not modify clipboard");
    ok(oncopy_fired, "copy event (to-be-cancelled) firing on DOM element");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_oncopy() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncopy event handler, fire copy.  Ensure that the event
  // handler was called, and the clipboard contents have been set to 'PUT TE',
  // which is the part that is selected below.
  selectContentInput();
  contentInput.focus();
  contentInput.setSelectionRange(2, 8);

  let oncopy_fired = false;
  let onbeforeinput_fired = false;
  let oninput_fired = false;
  contentInput.oncopy = () => { oncopy_fired = true; };
  contentInput.onbeforeinput = () => { onbeforeinput = true; };
  contentInput.oninput = () => { oninput_fired = true; };
  try {
    await putOnClipboard("PUT TE", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy on plaintext editor set clipboard correctly");
    ok(oncopy_fired, "copy event firing on plaintext editor");
    ok(!onbeforeinput_fired, "beforeinput event shouldn't be fired on plaintext editor by copy");
    ok(!oninput_fired, "input event shouldn't be fired on plaintext editor by copy");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_oncut() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncut event handler, and fire cut.  Ensure that the event
  // handler was fired, the clipboard contains the INPUT TEXT, and
  // that the input itself is empty.
  selectContentInput();
  let oncut_fired = false;
  let beforeInputEvents = [];
  let inputEvents = [];
  contentInput.oncut = () => { oncut_fired = true; };
  contentInput.onbeforeinput = (aEvent) => { beforeInputEvents.push(aEvent); }
  contentInput.oninput = (aEvent) => { inputEvents.push(aEvent); }
  try {
    await putOnClipboard("INPUT TEXT", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "cut on plaintext editor set clipboard correctly");
    ok(oncut_fired, "cut event firing on plaintext editor");
    is(beforeInputEvents.length, 1, '"beforeinput" event should be fired once by cut');
    if (beforeInputEvents.length) {
      is(beforeInputEvents[0].inputType, "deleteByCut", '"inputType" of "beforeinput" event should be "deleteByCut"');
      is(beforeInputEvents[0].cancelable, true, '"beforeinput" event for "deleteByCut" should be cancelable');
      is(beforeInputEvents[0].data, null, '"data" of "beforeinput" event for "deleteByCut" should be null');
      is(beforeInputEvents[0].dataTransfer, null, '"dataTransfer" of "beforeinput" event for "deleteByCut" should be null');
      is(beforeInputEvents[0].getTargetRanges().length, 0, 'getTargetRanges() of "beforeinput" event for "deleteByCut" should return empty array');
    }
    is(inputEvents.length, 1, '"input" event should be fired once by cut');
    if (inputEvents.length) {
      is(inputEvents[0].inputType, "deleteByCut", '"inputType" of "input" event should be "deleteByCut"');
      is(inputEvents[0].cancelable, false, '"input" event for "deleteByCut" should not be cancelable');
      is(inputEvents[0].data, null, '"data" of "input" event for "deleteByCut" should be null');
      is(inputEvents[0].dataTransfer, null, '"dataTransfer" of "input" event for "deleteByCut" should be null');
      is(inputEvents[0].getTargetRanges().length, 0, 'getTargetRanges() of "input" event for "deleteByCut" should return empty array');
    }
    is(contentInput.value, "",
      "cut on plaintext editor emptied editor");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_onpaste() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an onpaste event handler, and fire paste.  Ensure that the event
  // handler was fired, the clipboard contents didn't change, and that the
  // input value did change (ie. paste succeeded).
  selectContentInput();
  let onpaste_fired = false;
  let beforeInputEvents = [];
  let inputEvents = [];
  contentInput.onpaste = () => { onpaste_fired = true; };
  contentInput.onbeforeinput = (aEvent) => { beforeInputEvents.push(aEvent); }
  contentInput.oninput = (aEvent) => { inputEvents.push(aEvent); }

  synthesizeKey("v", {accelKey: 1});
  ok(onpaste_fired, "paste event firing on plaintext editor");
  is(getClipboardText(), clipboardInitialValue,
    "paste on plaintext editor did not modify clipboard contents");
  is(beforeInputEvents.length, 1, '"beforeinput" event should be fired once by paste');
  if (beforeInputEvents.length) {
    is(beforeInputEvents[0].inputType, "insertFromPaste", '"inputType" of "beforeinput" event should be "insertFromPaste"');
    is(beforeInputEvents[0].cancelable, true, '"beforeinput" event for "insertFromPaste" should be cancelable');
    is(beforeInputEvents[0].data, clipboardInitialValue, `"data" of "beforeinput" event for "insertFromPaste" should be "${clipboardInitialValue}"`);
    is(beforeInputEvents[0].dataTransfer, null, '"dataTransfer" of "beforeinput" event for "insertFromPaste" should be null');
    is(beforeInputEvents[0].getTargetRanges().length, 0, 'getTargetRanges() of "beforeinput" event for "insertFromPaste" should return empty array');
  }
  is(inputEvents.length, 1, '"input" event should be fired once by paste');
  if (inputEvents.length) {
    is(inputEvents[0].inputType, "insertFromPaste", '"inputType" of "input" event should be "insertFromPaste"');
    is(inputEvents[0].cancelable, false, '"input" event for "insertFromPaste" should not be cancelable');
    is(inputEvents[0].data, clipboardInitialValue, `"data" of "input" event for "insertFromPaste" should be "${clipboardInitialValue}"`);
    is(inputEvents[0].dataTransfer, null, '"dataTransfer" of "input" event for "insertFromPaste" should be null');
    is(inputEvents[0].getTargetRanges().length, 0, 'getTargetRanges() of "input" event for "insertFromPaste" should return empty array');
  }
  is(contentInput.value, clipboardInitialValue,
    "paste on plaintext editor did modify editor value");
});

add_task(async function test_input_oncopy_abort() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncopy event handler, fire copy.  Ensure that the event
  // handler was called, and that the clipboard value did NOT change.
  selectContentInput();
  let oncopy_fired = false;
  contentInput.oncopy = () => { oncopy_fired = true; return false; };
  contentInput.onbeforeinput = () => {
    ok(false, '"beforeinput" event should not be fired by copy but canceled');
  };
  contentInput.oninput = function() {
    ok(false, '"input" event should not be fired by copy but canceled');
  };
  try {
    await wontPutOnClipboard("CONTENT TEXT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "aborted copy on plaintext editor did not modify clipboard");
    ok(oncopy_fired, "copy event (to-be-cancelled) firing on plaintext editor");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_oncut_abort() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncut event handler, and fire cut.  Ensure that the event
  // handler was fired, the clipboard contains the INPUT TEXT, and
  // that the input itself is empty.
  selectContentInput();
  let oncut_fired = false;
  contentInput.oncut = () => { oncut_fired = true; return false; };
  contentInput.onbeforeinput = () => {
    ok(false, '"beforeinput" event should not be fired by cut but canceled by "cut" event listener');
  };
  contentInput.oninput = () => {
    ok(false, '"input" event should not be fired by cut but canceled by "cut" event listener');
  };
  try {
    await wontPutOnClipboard("CONTENT TEXT", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "aborted cut on plaintext editor did not modify clipboard");
    ok(oncut_fired, "cut event (to-be-cancelled) firing on plaintext editor");
    is(contentInput.value, "INPUT TEXT",
      "aborted cut on plaintext editor did not modify editor contents");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_oncut_beforeinput_abort() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an oncut event handler, and fire cut.  Ensure that the event
  // handler was fired, the clipboard contains the INPUT TEXT, and
  // that the input itself is empty.
  selectContentInput();
  let oncut_fired = false;
  let beforeInputEvents = [];
  let inputEvents = [];
  contentInput.oncut = () => { oncut_fired = true; };
  contentInput.onbeforeinput = (aEvent) => { beforeInputEvents.push(aEvent); aEvent.preventDefault(); }
  contentInput.oninput = (aEvent) => { inputEvents.push(aEvent); }
  try {
    await putOnClipboard("INPUT TEXT", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "cut on plaintext editor set clipboard correctly");
    ok(oncut_fired, "cut event firing on plaintext editor");
    is(beforeInputEvents.length, 1, '"beforeinput" event should be fired once by cut');
    if (beforeInputEvents.length) {
      is(beforeInputEvents[0].inputType, "deleteByCut", '"inputType" of "beforeinput" event should be "deleteByCut"');
      is(beforeInputEvents[0].cancelable, true, '"beforeinput" event for "deleteByCut" should be cancelable');
      is(beforeInputEvents[0].data, null, '"data" of "beforeinput" event for "deleteByCut" should be null');
      is(beforeInputEvents[0].dataTransfer, null, '"dataTransfer" of "beforeinput" event for "deleteByCut" should be null');
      is(beforeInputEvents[0].getTargetRanges().length, 0, 'getTargetRanges() of "beforeinput" event for "deleteByCut" should return empty array');
    }
    is(inputEvents.length, 0, '"input" event should not be fired by cut if "beforeinput" event is canceled');
    is(contentInput.value, "INPUT TEXT",
      'cut on plaintext editor should not change editor since "beforeinput" event was canceled');
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_onpaste_abort() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an onpaste event handler, and fire paste.  Ensure that the event
  // handler was fired, the clipboard contents didn't change, and that the
  // input value did change (ie. paste succeeded).
  selectContentInput();
  let onpaste_fired = false;
  contentInput.onpaste = () => { onpaste_fired = true; return false; };
  contentInput.onbeforeinput = () => {
    ok(false, '"beforeinput" event should not be fired by paste but canceled');
  };
  contentInput.oninput = () => {
    ok(false, '"input" event should not be fired by paste but canceled');
  };
  synthesizeKey("v", {accelKey: 1});
  ok(onpaste_fired,
    "paste event (to-be-cancelled) firing on plaintext editor");
  is(getClipboardText(), clipboardInitialValue,
    "aborted paste on plaintext editor did not modify clipboard");
  is(contentInput.value, "INPUT TEXT",
    "aborted paste on plaintext editor did not modify modified editor value");
});

add_task(async function test_input_onpaste_beforeinput_abort() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Setup an onpaste event handler, and fire paste.  Ensure that the event
  // handler was fired, the clipboard contents didn't change, and that the
  // input value did change (ie. paste succeeded).
  selectContentInput();
  let onpaste_fired = false;
  let beforeInputEvents = [];
  let inputEvents = [];
  contentInput.onpaste = () => { onpaste_fired = true; };
  contentInput.onbeforeinput = (aEvent) => { beforeInputEvents.push(aEvent); aEvent.preventDefault(); }
  contentInput.oninput = (aEvent) => { inputEvents.push(aEvent); }

  synthesizeKey("v", {accelKey: 1});
  ok(onpaste_fired, "paste event firing on plaintext editor");
  is(getClipboardText(), clipboardInitialValue,
    "paste on plaintext editor did not modify clipboard contents");
  is(beforeInputEvents.length, 1, '"beforeinput" event should be fired once by paste');
  if (beforeInputEvents.length) {
    is(beforeInputEvents[0].inputType, "insertFromPaste", '"inputType" of "beforeinput" event should be "insertFromPaste"');
    is(beforeInputEvents[0].cancelable, true, '"beforeinput" event for "insertFromPaste" should be cancelable');
    is(beforeInputEvents[0].data, clipboardInitialValue, `"data" of "beforeinput" event for "insertFromPaste" should be "${clipboardInitialValue}"`);
    is(beforeInputEvents[0].dataTransfer, null, '"dataTransfer" of "beforeinput" event for "insertFromPaste" should be null');
    is(beforeInputEvents[0].getTargetRanges().length, 0, 'getTargetRanges() of "beforeinput" event for "insertFromPaste" should return empty array');
  }
  is(inputEvents.length, 0, '"input" event should not be fired by paste when "beforeinput" is canceled');
  is(contentInput.value, "INPUT TEXT",
    "paste on plaintext editor did modify editor value");
});

add_task(async function test_input_cut_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Cut using event.dataTransfer. The event is not cancelled so the default
  // cut should occur
  selectContentInput();
  contentInput.oncut = function(event) {
    ok(event instanceof ClipboardEvent, "cut event is a ClipboardEvent");
    ok(event.clipboardData instanceof DataTransfer, "cut event dataTransfer is a DataTransfer");
    is(event.target, contentInput, "cut event target");
    is(SpecialPowers.wrap(event.clipboardData).mozItemCount, 0, "cut event mozItemCount");
    is(event.clipboardData.getData("text/plain"), "", "cut event getData");
    event.clipboardData.setData("text/plain", "This is some dataTransfer text");
    cachedCutData = event.clipboardData;
  };
  try {
    await putOnClipboard("INPUT TEXT", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "cut using dataTransfer on plaintext editor set clipboard correctly");
    is(contentInput.value, "",
      "cut using dataTransfer on plaintext editor cleared input");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_cut_abort_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Cut using event.dataTransfer but cancel the event. The data should be
  // put on the clipboard but since we don't modify the input value, the input
  // should have the same value.
  selectContentInput();
  contentInput.oncut = function(event) {
    event.clipboardData.setData("text/plain", "Cut dataTransfer text");
    return false;
  };
  try {
    await putOnClipboard("Cut dataTransfer text", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "aborted cut using dataTransfer on plaintext editor set clipboard correctly");
    is(contentInput.value, "INPUT TEXT",
      "aborted cut using dataTransfer on plaintext editor did not modify input");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_copy_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Copy using event.dataTransfer
  selectContentInput();
  contentInput.oncopy = function(event) {
    ok(event instanceof ClipboardEvent, "copy event is a ClipboardEvent");
    ok(event.clipboardData instanceof DataTransfer, "copy event dataTransfer is a DataTransfer");
    is(event.target, contentInput, "copy event target");
    is(SpecialPowers.wrap(event.clipboardData).mozItemCount, 0, "copy event mozItemCount");
    is(event.clipboardData.getData("text/plain"), "", "copy event getData");
    event.clipboardData.setData("text/plain", "Copied dataTransfer text");
    cachedCopyData = event.clipboardData;
  };
  try {
    await putOnClipboard("INPUT TEXT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy using dataTransfer on plaintext editor set clipboard correctly");
    is(contentInput.value, "INPUT TEXT",
      "copy using dataTransfer on plaintext editor did not modify input");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_copy_abort_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Copy using event.dataTransfer but cancel the event.
  selectContentInput();
  contentInput.oncopy = function(event) {
    event.clipboardData.setData("text/plain", "Copy dataTransfer text");
    return false;
  };
  try {
    await putOnClipboard("Copy dataTransfer text", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "aborted copy using dataTransfer on plaintext editor set clipboard correctly");
    is(contentInput.value, "INPUT TEXT",
      "aborted copy using dataTransfer on plaintext editor did not modify input");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_input_paste_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Paste using event.dataTransfer
  selectContentInput();
  contentInput.onpaste = function(event) {
    ok(event instanceof ClipboardEvent, "paste event is an ClipboardEvent");
    ok(event.clipboardData instanceof DataTransfer, "paste event dataTransfer is a DataTransfer");
    is(event.target, contentInput, "paste event target");
    is(SpecialPowers.wrap(event.clipboardData).mozItemCount, 1, "paste event mozItemCount");
    is(event.clipboardData.getData("text/plain"), clipboardInitialValue, "paste event getData");
    cachedPasteData = event.clipboardData;
  };
  synthesizeKey("v", {accelKey: 1});
  is(getClipboardText(), clipboardInitialValue,
    "paste using dataTransfer on plaintext editor did not modify clipboard contents");
  is(contentInput.value, clipboardInitialValue,
    "paste using dataTransfer on plaintext editor modified input");
});

add_task(async function test_input_paste_abort_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Paste using event.dataTransfer but cancel the event
  selectContentInput();
  contentInput.onpaste = function(event) {
    is(event.clipboardData.getData("text/plain"), clipboardInitialValue, "get data on aborted paste");
    contentInput.value = "Alternate Paste";
    return false;
  };
  synthesizeKey("v", {accelKey: 1});
  is(getClipboardText(), clipboardInitialValue,
     "aborted paste using dataTransfer on plaintext editor did not modify clipboard contents");
  is(contentInput.value, "Alternate Paste",
     "aborted paste using dataTransfer on plaintext editor modified input");
});

add_task(async function test_input_copypaste_dataTransfer_multiple() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Cut several types of data and paste it again
  contentInput.value = "This is a line of text";
  contentInput.oncopy = function(event) {
    var cd = event.clipboardData;
    cd.setData("text/plain", "would be a phrase");

    var exh = false;
    try { SpecialPowers.wrap(cd).mozSetDataAt("text/plain", "Text", 1); } catch (ex) { exh = true; }
    ok(exh, "exception occured mozSetDataAt 1");
    exh = false;
    try { SpecialPowers.wrap(cd).mozTypesAt(1); } catch (ex) { exh = true; }
    ok(exh, "exception occured mozTypesAt 1");
    exh = false;
    try { SpecialPowers.wrap(cd).mozGetDataAt("text/plain", 1); } catch (ex) { exh = true; }
    ok(exh, "exception occured mozGetDataAt 1");
    exh = false;
    try { cd.mozClearDataAt("text/plain", 1); } catch (ex) { exh = true; }
    ok(exh, "exception occured mozClearDataAt 1");

    cd.setData("text/x-moz-url", "http://www.mozilla.org");
    SpecialPowers.wrap(cd).mozSetDataAt("text/x-custom", "Custom Text with \u0000 null", 0);
    is(SpecialPowers.wrap(cd).mozItemCount, 1, "mozItemCount after set multiple types");
    return false;
  };

  try {
    selectContentInput();

    await putOnClipboard("would be a phrase", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy multiple types text");
    contentInput.oncopy = null;  // XXX Not sure why this is required...
  } catch (e) {
    ok(false, e.toString());
    return;
  }

  contentInput.setSelectionRange(5, 14);

  contentInput.onpaste = function(event) {
    var cd = event.clipboardData;
    is(SpecialPowers.wrap(cd).mozItemCount, 1, "paste after copy multiple types mozItemCount");
    is(cd.getData("text/plain"), "would be a phrase", "paste text/plain multiple types");

    // Firefox for Android's clipboard code doesn't handle x-moz-url. Therefore
    // disabling the following test. Enable this once bug #840101 is fixed.
    if (!navigator.appVersion.includes("Android")) {
      is(cd.getData("text/x-moz-url"), "http://www.mozilla.org", "paste text/x-moz-url multiple types");
      is(cd.getData("text/x-custom"), "Custom Text with \u0000 null", "paste text/custom multiple types");
    } else {
      is(cd.getData("text/x-custom"), "", "paste text/custom multiple types");
    }

    is(cd.getData("application/x-moz-custom-clipdata"), "", "application/x-moz-custom-clipdata is not present");

    exh = false;
    try { cd.setData("application/x-moz-custom-clipdata", "Some Data"); } catch (ex) { exh = true; }
    ok(exh, "exception occured setData with application/x-moz-custom-clipdata");

    exh = false;
    try { cd.setData("text/plain", "Text on Paste"); } catch (ex) { exh = true; }
    ok(exh, "exception occured setData on paste");

    is(cd.getData("text/plain"), "would be a phrase", "text/plain data unchanged");
  };
  synthesizeKey("v", {accelKey: 1});
  is(contentInput.value, "This would be a phrase of text",
    "default paste after copy multiple types");
});

add_task(async function test_input_copy_button_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Copy using event.dataTransfer when a button is focused.
  var button = document.getElementById("button");
  button.focus();
  button.oncopy = function(event) {
    ok(false, "should not be firing copy event on button");
    return false;
  };
  try {
    // copy should not occur here because buttons don't have any controller
    // for the copy command
    await wontPutOnClipboard("", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "Accel-C on the `<button>` shouldn't modify the clipboard data");
    ok(true, "Accel-C on the <button> shouldn't modify the clipboard data");
  } catch (e) {
    ok(false, e.toString());
  }

  try {
    selectContentDiv();

    await putOnClipboard("CONTENT TEXT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "Accel-C with selecting the content <div> should modify the clipboard data with text in it");
  } catch (e) {
    ok(false, e.toString());
  }
});

add_task(async function test_eventspref_disabled() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Disable clipboard events
  try {
    await SpecialPowers.pushPrefEnv({
      set: [['dom.event.clipboardevents.enabled', false]]
    });

    var event_fired = false;
    var input_data = undefined;
    contentInput.oncut = function() { event_fired = true; };
    contentInput.oncopy = function() { event_fired = true; };
    contentInput.onpaste = function() { event_fired = true; };
    contentInput.oninput = function(event) { input_data = event.data; };

    selectContentInput();
    contentInput.setSelectionRange(1, 4);

    await putOnClipboard("NPU", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "cut changed clipboard when preference is disabled");
    is(contentInput.value, "IT TEXT", "cut changed text when preference is disabled");
    ok(!event_fired, "cut event did not fire when preference is disabled");
    is(input_data, null, "cut should cause input event whose data value is null");

    event_fired = false;
    input_data = undefined;
    contentInput.setSelectionRange(3, 6);
    await putOnClipboard("TEX", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy changed clipboard when preference is disabled");
    ok(!event_fired, "copy event did not fire when preference is disabled")
    is(input_data, undefined, "copy shouldn't cause input event");

    event_fired = false;
    contentInput.setSelectionRange(0, 2);
    synthesizeKey("v", {accelKey: 1});
    is(contentInput.value, "TEX TEXT", "paste changed text when preference is disabled");
    ok(!event_fired, "paste event did not fire when preference is disabled");
    is(input_data, "",
       "paste should cause input event but whose data value should be empty string if clipboard event is disabled");
  } catch (e) {
    ok(false, e.toString());
  } finally {
    await SpecialPowers.popPrefEnv();
  }
});

let expectedData = [];

// Check to make that synthetic events do not change the clipboard
add_task(async function test_synthetic_events() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  let syntheticSpot = document.getElementById("syntheticSpot");

  // No dataType specified
  let event = new ClipboardEvent("cut", { data: "something" });
  expectedData = { type: "cut", data: null }
  compareSynthetic(event, "before");
  syntheticSpot.dispatchEvent(event);
  ok(expectedData.eventFired, "cut event fired");
  compareSynthetic(event, "after");

  event = new ClipboardEvent("cut", { dataType: "text/plain", data: "something" });
  expectedData = { type: "cut", dataType: "text/plain", data: "something" }
  compareSynthetic(event, "before");
  syntheticSpot.dispatchEvent(event);
  ok(expectedData.eventFired, "cut event fired");
  compareSynthetic(event, "after");

  event = new ClipboardEvent("copy", { dataType: "text/plain", data: "something" });
  expectedData = { type: "copy", dataType: "text/plain", data: "something" }
  compareSynthetic(event, "before");
  syntheticSpot.dispatchEvent(event);
  ok(expectedData.eventFired, "copy event fired");
  compareSynthetic(event, "after");

  event = new ClipboardEvent("copy", { dataType: "text/plain" });
  expectedData = { type: "copy", dataType: "text/plain", data: "" }
  compareSynthetic(event, "before");
  syntheticSpot.dispatchEvent(event);
  ok(expectedData.eventFired, "copy event fired");
  compareSynthetic(event, "after");

  event = new ClipboardEvent("paste", { dataType: "text/plain", data: "something" });
  expectedData = { type: "paste", dataType: "text/plain", data: "something" }
  compareSynthetic(event, "before");
  syntheticSpot.dispatchEvent(event);
  ok(expectedData.eventFired, "paste event fired");
  compareSynthetic(event, "after");

  event = new ClipboardEvent("paste", { dataType: "application/unknown", data: "unknown" });
  expectedData = { type: "paste", dataType: "application/unknown", data: "unknown" }
  compareSynthetic(event, "before");
  syntheticSpot.dispatchEvent(event);
  ok(expectedData.eventFired, "paste event fired");
  compareSynthetic(event, "after");
});

function compareSynthetic(event, eventtype) {
  let step = (eventtype == "cut" || eventtype == "copy" || eventtype == "paste") ? "during" : eventtype;
  if (step == "during") {
    is(eventtype, expectedData.type, "synthetic " + eventtype + " event fired");
  }

  ok(event.clipboardData instanceof DataTransfer, "clipboardData is assigned");

  is(event.type, expectedData.type, "synthetic " + eventtype + " event type");
  if (expectedData.data === null) {
    is(SpecialPowers.wrap(event.clipboardData).mozItemCount, 0, "synthetic " + eventtype + " empty data");
  }
  else {
    is(SpecialPowers.wrap(event.clipboardData).mozItemCount, 1, "synthetic " + eventtype + " item count");
    is(event.clipboardData.types.length, 1, "synthetic " + eventtype + " types length");
    is(event.clipboardData.getData(expectedData.dataType), expectedData.data,
       "synthetic " + eventtype + " data");
  }

  is(getClipboardText(), "empty", "event does not change the clipboard " + step + " dispatch");

  if (step == "during") {
    expectedData.eventFired = true;
  }
}

async function checkCachedDataTransfer(cd, eventtype) {
  var testprefix = "cached " + eventtype + " dataTransfer";

  try {
    await putOnClipboard("Some Clipboard Text", () => { setClipboardText("Some Clipboard Text") },
                         "change clipboard outside of event");
  } catch (e) {
    ok(false, e.toString());
    return;
  }

  var oldtext = cd.getData("text/plain");
  ok(!oldtext, "clipboard get using " + testprefix);

  try {
    SpecialPowers.wrap(cd).mozSetDataAt("text/plain", "Test Cache Data", 0);
  } catch (ex) {}
  ok(!cd.getData("text/plain"), "clipboard set using " + testprefix);

  is(getClipboardText(), "Some Clipboard Text", "clipboard not changed using " + testprefix);

  try {
    cd.mozClearDataAt("text/plain", 0);
  } catch (ex) {}
  ok(!cd.getData("text/plain"), "clipboard clear using " + testprefix);

  is(getClipboardText(), "Some Clipboard Text", "clipboard not changed using " + testprefix);
}

add_task(async function test_modify_datatransfer_outofevent() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Check if the cached clipboard data can be accessed or modified
  // and whether it modifies the real clipboard

  // XXX Depends on test_input_cut_dataTransfer()
  if (cachedCutData) {
    await checkCachedDataTransfer(cachedCutData, "cut");
  } else {
    todo(false, "test_input_cut_dataTransfer must have been failed, skipping tests with its dataTransfer");
  }
  // XXX Depends on test_input_copy_dataTransfer()
  if (cachedCopyData) {
    await checkCachedDataTransfer(cachedCopyData, "copy");
  } else {
    todo(false, "test_input_copy_dataTransfer must have been failed, skipping tests with its dataTransfer");
  }
  // XXX Depends on test_input_paste_dataTransfer()
  if (cachedPasteData) {
    await checkCachedDataTransfer(cachedPasteData, "paste");
  } else {
    todo(false, "test_input_paste_dataTransfer must have been failed, skipping tests with its dataTransfer");
  }
});

add_task(async function test_input_cut_disallowed_types_dataTransfer() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  selectContentInput();
  let oncutExecuted = false;
  contentInput.oncut = function(event) {
    // Setting an arbitrary type should be OK
    try {
      event.clipboardData.setData("apple/cider", "Anything your heart desires");
      ok(true, "We should have successfully executed the setData call");
    } catch(e) {
      ok(false, "We should not have gotten an exception for trying to set that data");
    }

    // Unless that type happens to be application/x-moz-custom-clipdata
    try {
      event.clipboardData.setData("application/x-moz-custom-clipdata", "Anything your heart desires");
      ok(false, "We should not have successfully executed the setData call");
    } catch(e) {
      is(e.name, "NotSupportedError",
         "We should have gotten an NotSupportedError exception for trying to set that data");
    }
    oncutExecuted = true;
  };

  try {
    await putOnClipboard("INPUT TEXT", () => {
      synthesizeKey("x", {accelKey: 1});
    }, "The oncut handler should have been executed data");
    ok(oncutExecuted, "The oncut handler should have been executed");
  } catch (e) {
    ok(false, "Failed to copy the data given by the oncut");
  }
});

// Try copying an image to the clipboard and make sure that it looks correct when pasting it.
add_task(async function test_image_dataTransfer() {
  // cmd_copyImageContents errors on Android (bug 1299578).
  if (navigator.userAgent.includes("Android")) {
    return;
  }

  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  // Copy the image's data to the clipboard
  try {
    await putOnClipboard("", () => {
      SpecialPowers.setCommandNode(window, document.getElementById("image"));
      SpecialPowers.doCommand(window, "cmd_copyImageContents");
    }, "copy changed clipboard when preference is disabled");
  } catch (e) {
    ok(false, e.toString());
  }

  let onpasteCalled = false;
  document.onpaste = function(event) {
    ok(event instanceof ClipboardEvent, "paste event is an ClipboardEvent");
    ok(event.clipboardData instanceof DataTransfer, "paste event dataTransfer is a DataTransfer");
    let items = event.clipboardData.items;
    let foundData = false;
    for (let i = 0; i < items.length; ++i)  {
      if (items[i].kind == "file") {
        foundData = true;
        is(items[i].type, "image/png", "The type of the data must be image/png");
        is(items[i].getAsFile().type, "image/png", "The attached file must be image/png");
      }
    }
    ok(foundData, "Should have found a file entry in the DataTransferItemList");
    let files = event.clipboardData.files;
    is(files.length, 1, "There should only be one file on the DataTransfer");
    is(files[0].type, "image/png", "The only file should be an image/png");
    onpasteCalled = true;
  }

  synthesizeKey("v", {accelKey: 1});
  ok(onpasteCalled, "The paste event listener must have been called");
});

add_task(async function test_event_target() {
  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  let copyTarget = null;
  addEventListenerTo(document, "copy", (event) => { copyTarget = event.target; }, {once: true});

  if (document.activeElement) {
    document.activeElement.blur();
  }

  let selection = document.getSelection();
  selection.setBaseAndExtent(content.firstChild, "CONTENT ".length,
                            content.firstChild, "CONTENT TEXT".length);

  try {
    await putOnClipboard("TEXT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy text from non-editable element");
  } catch (e) {
    ok(false, e.toString());
  }

  is(copyTarget.getAttribute("id"), "content", "Copy event's target should be always an element");

  // Create a contenteditable element to check complicated event target.
  contenteditableContainer.innerHTML = '<div contenteditable><p id="p1">foo</p><p id="p2">bar</p></div>';
  contenteditableContainer.firstChild.focus();

  let p1 = document.getElementById("p1");
  let p2 = document.getElementById("p2");
  selection.setBaseAndExtent(p1.firstChild, 1, p2.firstChild, 1);

  let pasteTarget = null;
  let pasteEventCount = 0;
  function pasteEventLogger(event) {
    pasteTarget = event.target;
    pasteEventCount++;
  }
  addEventListenerTo(document, "paste", pasteEventLogger);
  synthesizeKey("v", {accelKey: 1});
  is(pasteTarget.getAttribute("id"), "p1",
    "'paste' event's target should be always an element which includes start container of the first Selection range");
  is(pasteEventCount, 1,
    "'paste' event should be fired only once when Accel+'v' is pressed");
});

add_task(async function test_paste_event_for_middle_click_without_HTMLEditor() {
  await SpecialPowers.pushPrefEnv({"set": [["middlemouse.paste", true],
                                           ["middlemouse.contentLoadURL", false]]});

  try {
    await reset();
  } catch (e) {
    ok(false, `Failed to reset (${e.toString()})`);
    return;
  }

  contenteditableContainer.innerHTML = '<div id="non-editable-target">non-editable</div>';
  let noneditableDiv = document.getElementById("non-editable-target");

  ok(!getHTMLEditor(), "There should not be HTMLEditor");

  let selection = document.getSelection();
  selection.setBaseAndExtent(content.firstChild, 0,
                             content.firstChild, "CONTENT".length);

  try {
    await putOnClipboard("CONTENT", () => {
      synthesizeKey("c", {accelKey: 1});
    }, "copy text from non-editable element");
  } catch (e) {
    ok(false, e.toString());
    return;
  }

  let auxclickFired = false;
  function onAuxClick(event) {
    auxclickFired = true;
  }
  addEventListenerTo(document, "auxclick", onAuxClick);

  let pasteEventCount = 0;
  function onPaste(event) {
    pasteEventCount++;
    ok(auxclickFired, "'auxclick' event should be fired before 'paste' event");
    is(event.target, noneditableDiv,
      "'paste' event should be fired on the clicked element");
  }
  addEventListenerTo(document, "paste", onPaste);

  synthesizeMouseAtCenter(noneditableDiv, {button: 1});
  is(pasteEventCount, 1, "'paste' event should be fired just once");

  pasteEventCount = 0;
  auxclickFired = false;
  addEventListenerTo(document, "mouseup", (event) => { event.preventDefault(); }, {once: true});
  synthesizeMouseAtCenter(noneditableDiv, {button: 1});
  is(pasteEventCount, 1,
    "Even if 'mouseup' event is consumed, 'paste' event should be fired");

  pasteEventCount = 0;
  auxclickFired = false;
  addEventListenerTo(document, "auxclick", (event) => { event.preventDefault(); }, {once: true, capture: true});
  synthesizeMouseAtCenter(noneditableDiv, {button: 1});
  ok(auxclickFired, "'auxclickFired' fired");
  is(pasteEventCount, 0,
    "If 'auxclick' event is consumed at capturing phase at the document node, 'paste' event should not be fired");

  pasteEventCount = 0;
  auxclickFired = false;
  addEventListenerTo(noneditableDiv, "auxclick", (event) => { event.preventDefault(); }, {once: true});
  synthesizeMouseAtCenter(noneditableDiv, {button: 1});
  ok(auxclickFired, "'auxclick' fired");
  is(pasteEventCount, 0,
    "If 'auxclick' event listener is added to the click event target, 'paste' event should not be fired");

  pasteEventCount = 0;
  auxclickFired = false;
  addEventListenerTo(document, "auxclick", (event) => { event.preventDefault(); }, {once: true});
  synthesizeMouseAtCenter(noneditableDiv, {button: 1});
  ok(auxclickFired, "'auxclick' fired");
  is(pasteEventCount, 0,
    "If 'auxclick' event is consumed, 'paste' event should be not be fired");
});

add_task(function cleaning_up() {
  try {
    disableNonTestMouseEvents(false);
  } finally {
    window.close();
  }
});
</script>
</pre>
</body>
</html>
