test_paste_selection.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test for middle-click to paste selection with paste events</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" />

</head>

<body>

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

<input id="copy-area" value="CLIPBOARD">

<input id="paste-selection-area" value="" onpaste="pastedSelection(event)">

<input id="paste-global-area" value="" onpaste="pastedGlobal(event)">

<script>

var supportsSelectionClipboard = SpecialPowers.supportsSelectionClipboard();

function checkSelectionClipboardText(count)

  if ((!supportsSelectionClipboard ||

       SpecialPowers.getClipboardData("text/plain", SpecialPowers.Ci.nsIClipboard.kSelectionClipboard) == "COPY TEXT") &&

      SpecialPowers.getClipboardData("text/plain", SpecialPowers.Ci.nsIClipboard.kGlobalClipboard) == "CLIPBOARD") {

    pasteArea();

    return;

  if (count > 10) {

    ok(false, "could not set clipboards");

    pasteArea();

    SimpleTest.finish();

    return;

  setTimeout(checkSelectionClipboardText, 5, count + 1);

function selectArea()

  var copyArea = document.getElementById("copy-area");

  copyArea.focus();

  copyArea.select();

  synthesizeKey("x", { accelKey: true });

  if (supportsSelectionClipboard) {

    var clipboardHelper = SpecialPowers.Cc["@mozilla.org/widget/clipboardhelper;1"]

                                       .getService(SpecialPowers.Ci.nsIClipboardHelper);

    clipboardHelper.copyStringToClipboard("COPY TEXT",

                                          SpecialPowers.Ci.nsIClipboard.kSelectionClipboard);

  setTimeout(checkSelectionClipboardText, 50, 0);

var selectionPasted = false;

var globalPasted = false;

function pasteArea()

  var pasteArea = document.getElementById("paste-selection-area");

  var pasteAreaRect = pasteArea.getBoundingClientRect();

  var pasteAreaCenterX = pasteAreaRect.left + pasteAreaRect.width/2;

  var pasteAreaCenterY = pasteAreaRect.top + pasteAreaRect.height/2;

  var util = SpecialPowers.getDOMWindowUtils(window);

  pasteArea.focus();

  util.sendMouseEventToWindow("mousedown", pasteAreaCenterX, pasteAreaCenterY, 1, 1, 0, true);

  util.sendMouseEventToWindow("mouseup",   pasteAreaCenterX, pasteAreaCenterY, 1, 1, 0, true);

  var usesMouseButtonPaste = SpecialPowers.getBoolPref("middlemouse.paste");

  if (usesMouseButtonPaste) {

    // The data transfer should contain the selection data when the selection clipboard is supported,

    // not the global clipboard data.

    var expectedText = supportsSelectionClipboard ? "COPY TEXT" : "CLIPBOARD";

    is(document.getElementById("paste-selection-area").value, expectedText, "In pasteArea(): data pasted properly from selection");

    ok(selectionPasted, "selection event fired");

  else {

    is(pasteArea.value, "", "data not pasted when middle click not supported");

  var pasteArea = document.getElementById("paste-global-area");

  pasteArea.focus();

  synthesizeKey("v", { accelKey: true });

  ok(globalPasted, "global event fired");

  is(document.getElementById("paste-global-area").value, "CLIPBOARD", "data pasted properly from global clipboard");

  SimpleTest.finish();

function pastedSelection(event)

  ok(SpecialPowers.getBoolPref("middlemouse.paste"), "paste on middle click is valid");

  // Mac and Windows shouldn't get here as the middle mouse preference is false by default

  ok(!navigator.platform.includes("Mac") && !navigator.platform.includes("Win"), "middle click enabled on right platforms");

  var expectedText = supportsSelectionClipboard ? "COPY TEXT" : "CLIPBOARD";

  is(event.clipboardData.getData("text/plain"), expectedText, "In pastedSelection(): data pasted properly from selection");

  selectionPasted = true;

function pastedGlobal(event)

  // The data transfer should contain the global data.

  is(event.clipboardData.getData("text/plain"), "CLIPBOARD", "data correct in global clipboard data transfer");

  globalPasted = true;

SimpleTest.waitForExplicitFinish();

SimpleTest.requestFlakyTimeout("untriaged");

SimpleTest.waitForFocus(function() {

  SpecialPowers.pushPrefEnv({"set": [["general.autoScroll", false]]}, selectArea);

});

</script>

</pre>

</body>

</html>