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products/sources/formale Sprachen/C/Firefox/dom/html/test/forms/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 12 kB

Quelle test_change_event.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/dom/html/test/forms/test_change_event.html

<!DOCTYPE HTML>
<html>

<head>
<title>Test for Bug 722599</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>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=722599">Mozilla Bug 722599</a>
<p id="display"></p>
<div id="content">
<input type="file" id="fileInput"></input>
<textarea id="textarea" onchange="++textareaChange;"></textarea>
<input type="text" id="input_text" onchange="++textInputChange[0];"></input>
<input type="email" id="input_email" onchange="++textInputChange[1];"></input>
<input type="search" id="input_search" onchange="++textInputChange[2];"></input>
<input type="tel" id="input_tel" onchange="++textInputChange[3];"></input>
<input type="url" id="input_url" onchange="++textInputChange[4];"></input>
<input type="password" id="input_password" onchange="++textInputChange[5];"></input>


<input type="button" id="input_button" onchange="++NonTextInputChange[0];"></input>
<input type="submit" id="input_submit" onchange="++NonTextInputChange[1];"></input>
<input type="image" id="input_image" onchange="++NonTextInputChange[2];"></input>
<input type="reset" id="input_reset" onchange="++NonTextInputChange[3];"></input>
<input type="radio" id="input_radio" onchange="++NonTextInputChange[4];"></input>
<input type="checkbox" id="input_checkbox" onchange="++NonTextInputChange[5];"></input>
<input type="number" id="input_number" onchange="++numberChange;"></input>
<input type="range" id="input_range" onchange="++rangeChange;"></input>


<input type="text" id="input_text_value" onchange="++textInputValueChange"
  onfocus="this.blur();" value="foo"></input>

</div>
<pre id="test">
<script class="testbody" type="text/javascript">

  /** Test for Bug 722599 **/

  const isDesktop = !/Mobile|Tablet/.test(navigator.userAgent);

  var textareaChange = 0;
  var fileInputChange = 0;
  var textInputValueChange = 0;

  var textInputTypes = ["text", "email", "search", "tel", "url", "password"];
  var textInputChange = [0, 0, 0, 0, 0, 0];

  var NonTextInputTypes = ["button", "submit", "image", "reset", "radio", "checkbox"];
  var NonTextInputChange = [0, 0, 0, 0, 0, 0];

  var numberChange = 0;
  var rangeChange = 0;

  var blurTestCalled = false; //Sentinel to prevent infinite loop.

  SimpleTest.waitForExplicitFinish();
  var MockFilePicker = SpecialPowers.MockFilePicker;
  MockFilePicker.init(SpecialPowers.wrap(window).browsingContext);

  function fileInputBlurTest() {
    var btn = document.getElementById('fileInput');
    btn.focus()
    btn.blur();
    is(fileInputChange, 1, "change event shouldn't be dispatched on blur for file input element(1)");
  }

  function testUserInput() {
    //Simulating an OK click and with a file name return.
    MockFilePicker.useBlobFile();
    MockFilePicker.returnValue = MockFilePicker.returnOK;
    var input = document.getElementById('fileInput');
    input.focus();

    input.addEventListener("change", function (aEvent) {
      ++fileInputChange;
      if (!blurTestCalled) {
        is(fileInputChange, 1, "change event should have been dispatched on file input.");
        blurTestCalled = true;
        fileInputBlurTest();
      }
      else {
        is(fileInputChange, 1, "change event shouldn't be dispatched on blur for file input element (2)");
      }
    });

    SpecialPowers.wrap(document).notifyUserGestureActivation();
    input.click();

    // blur the file input, we can't use blur() because of bug 760283
    document.getElementById('input_text').focus();
    setTimeout(testUserInput2, 0);
  }

  function testUserInput2() {
    var input = document.getElementById('fileInput');
    // remove it, otherwise cleanup() opens a native file picker!
    input.remove();
    MockFilePicker.cleanup();

    //text, email, search, telephone, url & password input tests
    for (var i = 0; i < textInputTypes.length; ++i) {
      input = document.getElementById("input_" + textInputTypes[i]);
      input.focus();
      synthesizeKey("KEY_Enter");
      is(textInputChange[i], 0, "Change event shouldn't be dispatched on " + textInputTypes[i] + " input element");

      sendString("m");
      synthesizeKey("KEY_Enter");
      is(textInputChange[i], 1, textInputTypes[i] + " input element should have dispatched change event.");
    }

    //focus and blur text input
    input = document.getElementById("input_text");
    input.focus();
    sendString("f");
    input.blur();
    is(textInputChange[0], 2, "text input element should have dispatched change event (2).");

    // value being set while focused
    input.focus();
    input.value = 'foo';
    input.blur();
    is(textInputChange[0], 2, "text input element should not have dispatched change event (2).");

    // value being set while focused after being modified manually
    input.focus();
    sendString("f");
    input.value = 'bar';
    input.blur();
    is(textInputChange[0], 3, "text input element should have dispatched change event (3).");

    //focus and blur textarea
    var textarea = document.getElementById("textarea");
    textarea.focus();
    sendString("f");
    textarea.blur();
    is(textareaChange, 1, "Textarea element should have dispatched change event.");

    // value being set while focused
    textarea.focus();
    textarea.value = 'foo';
    textarea.blur();
    is(textareaChange, 1, "textarea should not have dispatched change event (1).");

    // value being set while focused after being modified manually
    textarea.focus();
    sendString("f");
    textarea.value = 'bar';
    textarea.blur();
    is(textareaChange, 2, "textearea should have dispatched change event (2).");

    //Non-text input tests:
    for (var i = 0; i < NonTextInputTypes.length; ++i) {
      //button, submit, image and reset input type tests.
      if (i < 4) {
        input = document.getElementById("input_" + NonTextInputTypes[i]);
        input.focus();
        input.click();
        is(NonTextInputChange[i], 0, "Change event shouldn't be dispatched on " + NonTextInputTypes[i] + " input element");
        input.blur();
        is(NonTextInputChange[i], 0, "Change event shouldn't be dispatched on " + NonTextInputTypes[i] + " input element(2)");
      }
      //for radio and and checkboxes, we require that change event should ONLY be dispatched on setting the value.
      else {
        input = document.getElementById("input_" + NonTextInputTypes[i]);
        input.focus();
        input.click();
        is(NonTextInputChange[i], 1, NonTextInputTypes[i] + " input element should have dispatched change event.");
        input.blur();
        is(NonTextInputChange[i], 1, "Change event shouldn't be dispatched on " + NonTextInputTypes[i] + " input element");

        // Test that change event is not dispatched if click event is cancelled.
        function preventDefault(e) {
          e.preventDefault();
        }
        input.addEventListener("click", preventDefault);
        input.click();
        is(NonTextInputChange[i], 1, "Change event shouldn't be dispatched if click event is cancelled");
        input.removeEventListener("click", preventDefault);
      }
    }

    // Special case type=number
    var number = document.getElementById("input_number");
    number.focus();
    sendString("a");
    number.blur();
    is(numberChange, 0, "Change event shouldn't be dispatched on number input element for key changes that don't change its value");
    number.value = "";
    number.focus();
    sendString("12");
    is(numberChange, 0, "Change event shouldn't be dispatched on number input element for keyboard input until it loses focus");
    number.blur();
    is(numberChange, 1, "Change event should be dispatched on number input element on blur");
    is(number.value, "12", "Sanity check that number keys were actually handled");
    if (isDesktop) { // up/down arrow keys not supported on android/b2g
      number.value = "";
      number.focus();
      synthesizeKey("KEY_ArrowUp");
      synthesizeKey("KEY_ArrowUp");
      synthesizeKey("KEY_ArrowDown");
      is(numberChange, 4, "Change event should be dispatched on number input element for up/down arrow keys (a special case)");
      is(number.value, "1", "Sanity check that number and arrow keys were actually handled");
    }

    // Special case type=range
    var range = document.getElementById("input_range");
    range.focus();
    sendString("a");
    range.blur();
    is(rangeChange, 0, "Change event shouldn't be dispatched on range input element for key changes that don't change its value");
    range.focus();
    synthesizeKey("VK_HOME");
    is(rangeChange, 1, "Change event should be dispatched on range input element for key changes");
    range.blur();
    is(rangeChange, 1, "Change event shouldn't be dispatched on range input element on blur");
    range.focus();
    var bcr = range.getBoundingClientRect();
    var centerOfRangeX = bcr.width / 2;
    var centerOfRangeY = bcr.height / 2;
    synthesizeMouse(range, centerOfRangeX - 10, centerOfRangeY, { type: "mousedown" });
    is(rangeChange, 1, "Change event shouldn't be dispatched on range input element for mousedown");
    synthesizeMouse(range, centerOfRangeX - 5, centerOfRangeY, { type: "mousemove" });
    is(rangeChange, 1, "Change event shouldn't be dispatched on range input element during drag of thumb");
    synthesizeMouse(range, centerOfRangeX, centerOfRangeY, { type: "mouseup" });
    is(rangeChange, 2, "Change event should be dispatched on range input element at end of drag");
    range.blur();
    is(rangeChange, 2, "Change event shouldn't be dispatched on range input element when range loses focus after a drag");
    synthesizeMouse(range, centerOfRangeX - 10, centerOfRangeY, {});
    is(rangeChange, 3, "Change event should be dispatched on range input element for a click that gives the range focus");

    if (isDesktop) { // up/down arrow keys not supported on android/b2g
      synthesizeKey("KEY_ArrowUp");
      is(rangeChange, 4, "Change event should be dispatched on range input element for key changes that change its value (KEY_ArrowUp)");
      synthesizeKey("KEY_ArrowDown");
      is(rangeChange, 5, "Change event should be dispatched on range input element for key changes that change its value (KEY_ArrowDown)");
      synthesizeKey("KEY_ArrowRight");
      is(rangeChange, 6, "Change event should be dispatched on range input element for key changes that change its value (KEY_ArrowRight)");
      synthesizeKey("KEY_ArrowLeft");
      is(rangeChange, 7, "Change event should be dispatched on range input element for key changes that change its value (KEY_ArrowLeft)");
      synthesizeKey("KEY_ArrowUp", {shiftKey: true});
      is(rangeChange, 8, "Change event should be dispatched on range input element for key changes that change its value (Shift+KEY_ArrowUp)");
      synthesizeKey("KEY_ArrowDown", {shiftKey: true});
      is(rangeChange, 9, "Change event should be dispatched on range input element for key changes that change its value (Shift+KEY_ArrowDown)");
      synthesizeKey("KEY_ArrowRight", {shiftKey: true});
      is(rangeChange, 10, "Change event should be dispatched on range input element for key changes that change its value (Shift+KEY_ArrowRight)");
      synthesizeKey("KEY_ArrowLeft", {shiftKey: true});
      is(rangeChange, 11, "Change event should be dispatched on range input element for key changes that change its value (Shift+KEY_ArrowLeft)");
      synthesizeKey("KEY_PageUp");
      is(rangeChange, 12, "Change event should be dispatched on range input element for key changes that change its value (KEY_PageUp)");
      synthesizeKey("KEY_PageDown");
      is(rangeChange, 13, "Change event should be dispatched on range input element for key changes that change its value (KEY_PageDown");
      synthesizeKey("KEY_ArrowRight", {shiftKey: true});
      is(rangeChange, 14, "Change event should be dispatched on range input element for key changes that change its value (Shift+KEY_PageUp)");
      synthesizeKey("KEY_ArrowLeft", {shiftKey: true});
      is(rangeChange, 15, "Change event should be dispatched on range input element for key changes that change its value (Shift+KEY_PageDown)");
    }
    //Input type change test.
    input = document.getElementById("input_checkbox");
    input.type = "text";
    input.focus();
    input.click();
    input.blur();
    is(NonTextInputChange[5], 1, "Change event shouldn't be dispatched for checkbox ---> text input type change");

    setTimeout(testInputWithDefaultValue, 0);
  }

  function testInputWithDefaultValue() {
    // focus and blur an input text should not trigger change event if content hasn't changed.
    var input = document.getElementById('input_text_value');
    input.focus();
    is(textInputValueChange, 0, "change event shouldn't be dispatched on input text with default value");

    SimpleTest.finish();
  }

  addLoadEvent(testUserInput);

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

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