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<!DOCTYPE html>
<html>
<head>
<title>Test for nsIEditor.canUndo and nsIEditor.canRedo</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`
);
document.execCommand("undo");
is(
getValue(editableElement),
"b",
`Editor for ${selector} should've undone inserting "a"`
);
is(
editor.canUndo,
true,
`Editor for ${selector} should have undo transaction for inserting "b" after undoing inserting "a"`
);
is(
editor.canRedo,
true,
`Editor for ${selector} should have redo transaction for inserting "b" after undoing inserting "a"`
);
document.execCommand("undo");
is(
getValue(editableElement),
"",
`Editor for ${selector} should've undone inserting "b"`
);
is(
editor.canUndo,
false,
`Editor for ${selector} shouldn't have undo transaction after undoing all things`
);
is(
editor.canRedo,
true,
`Editor for ${selector} should have redo transaction after undoing all things`
);
document.execCommand("redo");
is(
getValue(editableElement),
"b",
`Editor for ${selector} should've redone inserting "b"`
);
is(
editor.canUndo,
true,
`Editor for ${selector} should have undo transaction after redoing inserted "a"`
);
is(
editor.canRedo,
true,
`Editor for ${selector} should have redo transaction after redoing inserted "a"`
);
document.execCommand("redo");
is(
getValue(editableElement),
"ab",
`Editor for ${selector} should've redone inserting "b"`
);
is(
editor.canUndo,
true,
`Editor for ${selector} should have undo transaction after redoing all things`
);
is(
editor.canRedo,
false,
`Editor for ${selector} shouldn't have redo transaction for after redoing all things`
);
document.execCommand("undo");
synthesizeKey("c");
is(
getValue(editableElement),
"cb",
`Editor for ${selector} should've redone inserting "b"`
);
is(
editor.canUndo,
true,
`Editor for ${selector} should have undo transaction after inserting another undoing once`
);
is(
editor.canRedo,
false,
`Editor for ${selector} shouldn't have redo transaction after inserting another undoing once`
);
}
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>
|
