Quelle test_nsIEditor_undoAll.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/editor/libeditor/tests/test_nsIEditor_undoAll.html

<!DOCTYPE html>
<html>
<head>
<title>Test for nsIEditor.undoAll()</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>
<div id="content"><input><textarea></textarea><div contenteditable></div></div>
<pre id="test">
<script>

SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(() => {
  function isTextEditor(aElement) {
    return aElement.tagName.toLowerCase() == "input" ||
           aElement.tagName.toLowerCase() == "textarea";
  }
  function getEditor(aElement) {
    if (isTextEditor(aElement)) {
      return SpecialPowers.wrap(aElement).editor;
    }
    return SpecialPowers.wrap(window).docShell.editingSession?.getEditorForWindow(window);
  }
  function setValue(aElement, aValue) {
    if (isTextEditor(aElement)) {
      aElement.value = aValue;
      return;
    }
    aElement.innerHTML = aValue;
  }
  function getValue(aElement) {
    if (isTextEditor(aElement)) {
      return aElement.value;
    }
    return aElement.innerHTML.replace(/<br>/g, "");
  }
  for (const selector of ["input", "textarea", "div[contenteditable]"]) {
    const editableElement = document.querySelector(selector);
    editableElement.focus();
    const editor = getEditor(editableElement);
    setValue(editableElement, "");
    is(
      editor.canUndo,
      false,
      `Editor for ${selector} shouldn't have undo transaction at start`
    );
    is(
      editor.canRedo,
      false,
      `Editor for ${selector} shouldn't have redo transaction at start`
    );

    synthesizeKey("b");
    is(
      getValue(editableElement),
      "b",
      `Editor for ${selector} should've handled inserting "b"`
    );
    is(
      editor.canUndo,
      true,
      `Editor for ${selector} should have undo transaction after inserting "b"`
    );
    is(
      editor.canRedo,
      false,
      `Editor for ${selector} shouldn't have redo transaction after inserting "b"`
    );

    synthesizeKey("KEY_ArrowLeft");
    synthesizeKey("a");
    is(
      getValue(editableElement),
      "ab",
      `Editor for ${selector} should've handled inserting "a" before "b"`
    );
    is(
      editor.canUndo,
      true,
      `Editor for ${selector} should have undo transaction after inserting text again`
    );
    is(
      editor.canRedo,
      false,
      `Editor for ${selector} should have redo transaction after inserting text again`
    );

    editor.undoAll();
    is(
      getValue(editableElement),
      "",
      `Editor for ${selector} should've undone everything`
    );
    is(
      editor.canUndo,
      false,
      `Editor for ${selector} shouldn't have undo transactions after undoAll() called`
    );
    is(
      editor.canRedo,
      true,
      `Editor for ${selector} should have redo transaction after undoAll() called`
    );

  }
  SimpleTest.finish();
});

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

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