<!DOCTYPE html>
<meta charset="utf-8">
<title>execCommand() should only trigger 'input'</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<p id="txt" contenteditable></p>
<script>
test(function() {
    let lastBeforeInputType = '';
    let lastInputType = '';
    const txt = document.getElementById('txt');
    txt.addEventListener('beforeinput', function(event) {
        assert_true(event instanceof InputEvent);
        assert_false(event.isComposing);
        lastBeforeInputType = event.inputType;
    });
    txt.addEventListener('input', function(event) {
        assert_true(event instanceof InputEvent);
        assert_false(event.isComposing);
        lastInputType = event.inputType;
    });

    const NO_INPUT_EVENT_FIRED = 'NO_INPUT_EVENT_FIRED';
    function testExecCommandInputType(command, args, inputType) {
        lastBeforeInputType = NO_INPUT_EVENT_FIRED;
        lastInputType = NO_INPUT_EVENT_FIRED;
        document.execCommand(command, false, args);
        assert_equals(lastBeforeInputType, NO_INPUT_EVENT_FIRED, `execCommand(${command}, false, ${args}) shouldn't fire beforeinput`);
        assert_equals(lastInputType, inputType, `execCommand(${command}, false, ${args}) should produce inputType: ${inputType}`);
    }

    txt.focus();
    // InsertText
    testExecCommandInputType('insertText', 'a', 'insertText');
    testExecCommandInputType('insertText', 'bc', 'insertText');
    assert_equals(txt.innerHTML, 'abc');
    testExecCommandInputType('insertOrderedList', null, 'insertOrderedList');
    assert_equals(txt.innerHTML, '<ol><li>abc<br></li></ol>');
    testExecCommandInputType('insertUnorderedList', null, 'insertUnorderedList');
    assert_equals(txt.innerHTML, '<ul><li>abc<br></li></ul>');
    testExecCommandInputType('insertLineBreak', null, 'insertLineBreak');
    testExecCommandInputType('insertParagraph', null, 'insertParagraph');

    // Styling
    txt.innerHTML = 'abc';
    var selection = window.getSelection();
    selection.collapse(txt, 0);
    selection.extend(txt, 1);
    testExecCommandInputType('bold', null, 'formatBold');
    assert_equals(txt.innerHTML, '<b>abc</b>');
    testExecCommandInputType('italic', null, 'formatItalic');
    assert_equals(txt.innerHTML, '<b><i>abc</i></b>');
    testExecCommandInputType('underline', null, 'formatUnderline');
    assert_equals(txt.innerHTML, '<b><i><u>abc</u></i></b>');
    testExecCommandInputType('strikeThrough', null, 'formatStrikeThrough');
    assert_equals(txt.innerHTML, '<b><i><u><strike>abc</strike></u></i></b>');
    testExecCommandInputType('superscript', null, 'formatSuperscript');
    assert_equals(txt.innerHTML, '<b><i><u><strike><sup>abc</sup></strike></u></i></b>');
    testExecCommandInputType('subscript', null, 'formatSubscript');
    assert_equals(txt.innerHTML, '<b><i><u><strike><sub>abc</sub></strike></u></i></b>');

    // Formating
    txt.innerHTML = 'abc';
    testExecCommandInputType('justifyCenter', null, 'formatJustifyCenter');
    assert_equals(txt.innerHTML, '<div style="text-align: center;">abc</div>');
    testExecCommandInputType('justifyFull', null, 'formatJustifyFull');
    assert_equals(txt.innerHTML, '<div style="text-align: justify;">abc</div>');
    testExecCommandInputType('justifyRight', null, 'formatJustifyRight');
    assert_equals(txt.innerHTML, '<div style="text-align: right;">abc</div>');
    testExecCommandInputType('justifyLeft', null, 'formatJustifyLeft');
    assert_equals(txt.innerHTML, '<div style="text-align: left;">abc</div>');
    selection.collapse(txt, 0);
    selection.extend(txt, 1);
    testExecCommandInputType('removeFormat', null, 'formatRemove');
    assert_equals(txt.innerHTML, '<div style="">abc</div>');
    testExecCommandInputType('indent', null, 'formatIndent');
    testExecCommandInputType('outdent', null, 'formatOutdent');
    assert_equals(txt.innerHTML, '<div style="">abc</div>');

    // Copy shouldn't fire 'input'.
    testExecCommandInputType('copy', null, NO_INPUT_EVENT_FIRED);
    // Cut/Paste should fire 'input'.
    testExecCommandInputType('cut', null, 'deleteByCut');
    testExecCommandInputType('paste', null, 'insertFromPaste');
});
</script>