LayoutTests/editing/execCommand/indent-pre.html

<p>This test tries to indent lines within pre tags.  This test passes if it
does not crash.</p>
<div contentEditable>
<pre id="pre-basic">line one
line two
line three
line four</pre>

<ul><li><pre id="pre-list">list one
list two
list three
list four
</pre></li></ul>

<table>
<tr><td><pre id="pre-table">table one
table two
table three</pre></td><td>right cell</td></tr></table>

<div id="results">FAILED</div>
</div>

<a href="javascript:document.execCommand('indent')">indent</a>
<a href="javascript:document.execCommand('outdent')">outdent</a>
<script src="../../resources/dump-as-markup.js"></script>
<script src="../editing.js"></script>
<script>
function setSelection(node)
{
    var textNode = node.firstChild;
    if (textNode.nodeType != Node.TEXT_NODE)
        throw "Wrong node type: " + textNode;
    execSetSelectionCommand(textNode, 0, 0);
}

function verifyTextSelection(startNode, startOffset, endNode, endOffset)
{
    if (startNode.nodeType != Node.TEXT_NODE)
        console.log("Wrong start node type: " + startNode);
    if (endNode.nodeType != Node.TEXT_NODE)
        console.log("Wrong end node type: " + endNode);
    var sel = window.getSelection();
    if (sel.anchorNode != startNode || sel.focusNode != endNode)
        console.log("Wrong node selected.");
    if (sel.anchorOffset != startOffset)
        console.log("Wrong anchor offset: " + sel.anchorOffset + " instead of " + startOffset);
    if (sel.focusOffset != endOffset)
        console.log("Wrong focus offset: " + sel.focusOffset + " instead of " + endOffset);
}

// Indent a single line in a pre and make sure the selection is correctly preserved.
var pre = document.getElementById("pre-basic");
setSelection(pre);
execMoveSelectionForwardByCharacterCommand();
execExtendSelectionForwardByWordCommand();
document.execCommand("indent");
verifyTextSelection(document.getElementsByTagName("pre")[0].firstChild, 1,
                    document.getElementsByTagName("pre")[0].firstChild, 4);

// Indent 2 lines.
setSelection(pre);
execMoveSelectionForwardByLineCommand();
execExtendSelectionForwardByLineCommand();
execExtendSelectionForwardByWordCommand();
document.execCommand("indent");
if (document.getElementsByTagName("pre").length > 3) {
    // FIXME: The selection for the anchorNode is wrong.  It should stay at
    // the beginning of "line three", but it moves to the end of "line 2".
    verifyTextSelection(document.getElementsByTagName("pre")[2].firstChild, 0,
                        document.getElementsByTagName("pre")[3].firstChild, 4);
} else {
    console.log("Wrong number of pre nodes.");
}

// Indent <pre> lines in a list.
pre = document.getElementById("pre-list");
setSelection(pre);
execMoveSelectionForwardByLineCommand();
execExtendSelectionForwardByLineCommand();
execExtendSelectionForwardByLineCommand();
document.execCommand("indent");
verifyTextSelection(document.getElementsByTagName("blockquote")[2].firstChild, 0,
                    document.getElementsByTagName("blockquote")[2].firstChild.nextSibling, 10);
// Indenting <pre> lines in a table.
pre = document.getElementById("pre-table");
setSelection(pre);
execMoveSelectionForwardByLineCommand();
execExtendSelectionForwardByLineCommand();
execExtendSelectionForwardByLineCommand();
// FIXME: This is wrong.  The pre tags get copied when they shouldn't be. 
// See https://bugs.webkit.org/show_bug.cgi?id=42009
document.execCommand("indent");
document.getElementById("results").innerText = "PASSED (did not crash)";
</script>