tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_nsIEditor_clearUndoRedo.html (3564B)

      1 <!DOCTYPE html>
      2 <html>
      3 <head>
      4 <title>Test for nsIEditor.clearUndoRedo()</title>
      5 <script src="/tests/SimpleTest/SimpleTest.js"></script>
      6 <script src="/tests/SimpleTest/EventUtils.js"></script>
      7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
      8 </head>
      9 <body>
     10 <p id="display"></p>
     11 <div id="content"><input><textarea></textarea><div contenteditable></div></div>
     12 <pre id="test">
     13 <script>
     14 
     15 SimpleTest.waitForExplicitFinish();
     16 SimpleTest.waitForFocus(() => {
     17  function isTextEditor(aElement) {
     18    return aElement.tagName.toLowerCase() == "input" ||
     19           aElement.tagName.toLowerCase() == "textarea";
     20  }
     21  function getEditor(aElement) {
     22    if (isTextEditor(aElement)) {
     23      return SpecialPowers.wrap(aElement).editor;
     24    }
     25    return SpecialPowers.wrap(window).docShell.editingSession?.getEditorForWindow(window);
     26  }
     27  function setValue(aElement, aValue) {
     28    if (isTextEditor(aElement)) {
     29      aElement.value = aValue;
     30      return;
     31    }
     32    aElement.innerHTML = aValue;
     33  }
     34  function getValue(aElement) {
     35    if (isTextEditor(aElement)) {
     36      return aElement.value;
     37    }
     38    return aElement.innerHTML.replace(/<br>/g, "");
     39  }
     40  for (const selector of ["input", "textarea", "div[contenteditable]"]) {
     41    const editableElement = document.querySelector(selector);
     42    editableElement.focus();
     43    const editor = getEditor(editableElement);
     44    (function test_clearing_undo_history() {
     45      setValue(editableElement, "");
     46      is(
     47        editor.canUndo,
     48        false,
     49        `Editor for ${selector} shouldn't have undo transaction at start`
     50      );
     51      synthesizeKey("a");
     52      is(
     53        getValue(editableElement),
     54        "a",
     55        `Editor for ${selector} should've handled typing "a"`
     56      );
     57      is(
     58        editor.canUndo,
     59        true,
     60        `Editor for ${selector} should have undo transaction for the inserted text`
     61      );
     62      editor.clearUndoRedo();
     63      is(
     64        editor.canUndo,
     65        false,
     66        `Editor for ${selector} shouldn't have undo transaction after calling nsIEditor.clearUndoRedo()`
     67      );
     68      document.execCommand("undo");
     69      is(
     70        getValue(editableElement),
     71        "a",
     72        `Editor for ${selector} should do noting for document.execCommand("undo")`
     73      );
     74    })();
     75 
     76    (function test_clearing_redo_history() {
     77      setValue(editableElement, "");
     78      is(
     79        editor.canRedo,
     80        false,
     81        `Editor for ${selector} shouldn't have redo transaction at start`
     82      );
     83      synthesizeKey("b");
     84      is(
     85        getValue(editableElement),
     86        "b",
     87        `Editor for ${selector} should've handled typing "b"`
     88      );
     89      is(
     90        editor.canRedo,
     91        false,
     92        `Editor for ${selector} shouldn't have redo transaction after inserting text`
     93      );
     94      document.execCommand("undo");
     95      is(
     96        getValue(editableElement),
     97        "",
     98        `Editor for ${selector} should've handled the typing "b" after undoing`
     99      );
    100      is(
    101        editor.canRedo,
    102        true,
    103        `Editor for ${selector} should have redo transaction of inserting text`
    104      );
    105      editor.clearUndoRedo();
    106      is(
    107        editor.canRedo,
    108        false,
    109        `Editor for ${selector} shouldn't have redo transaction after calling nsIEditor.clearUndoRedo()`
    110      );
    111      document.execCommand("redo");
    112      is(
    113        getValue(editableElement),
    114        "",
    115        `Editor for ${selector} should do noting for document.execCommand("redo")`
    116      );
    117    })();
    118  }
    119  SimpleTest.finish();
    120 });
    121 
    122 </script>
    123 </pre>
    124 </body>
    125 </html>