gecko/layout/html/tests/TestDelete.js

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
var count = 0;
function trace(msg)
{
dump("test " + msg + " (" + count + ")\n");
}
function dump2(msg, parent, child)
{
dump(msg);
dump(" parent=");
dump(parent.tagName);
dump(" child=");
dump((child.nodeType != Node.TEXT_NODE) ? child.tagName : "(text)");
dump(" kids: ");
var children = parent.childNodes;
var length = children.length;
var child = null;
var count = 0;
while (count < length) {
child = children.item(count);
dump((child.nodeType != Node.TEXT_NODE) ? child.tagName : "(text)");
dump(",");
count++;
}
dump("\n");
}
function firstChildOf(node)
{
return node.childNodes.item(0);
}
function middleChildOf(node)
{
var children = node.childNodes;
return children.item(Math.floor(children.length / 2));
}
function lastChildOf(node)
{
var children = node.childNodes;
return children.item(children.length - 1)
}
function findContainer(node, name)
{
dump("Looking in " + node.tagName + " for " + name + "\n");
var children = node.childNodes;
var length = children.length;
var child = null;
var count = 0;
while (count < length) {
child = children.item(count);
if (child.nodeType != Node.TEXT_NODE) {
if (child.tagName == name) {
return child;
}
var body = findContainer(child, name);
if (null != body) {
return body;
}
}
count++;
}
return null;
}
var longText = "Lots more text (this text is long so that we can verify that continuations are handled properly when they are deleted) ";
function makeTestDocument(node)
{
var blockTag = new Array(6);
blockTag[0] = "DIV";
blockTag[1] = "ADDRESS";
blockTag[2] = "BLOCKQUOTE";
blockTag[3] = "CENTER";
blockTag[4] = "H1";
blockTag[5] = "H2";
var spanTag = new Array(6);
spanTag[0] = "SPAN";
spanTag[1] = "B";
spanTag[2] = "I";
spanTag[3] = "EM";
spanTag[4] = "STRONG";
spanTag[5] = "TT";
for (b = 0; b < 6; b++) {
var block = document.createElement(blockTag[b]);
block.insertBefore(document.createTextNode("Opening text ["), null);
for (s = 0; s < 6; s++) {
var span = document.createElement(spanTag[s]);
block.insertBefore(span, null);
span.insertBefore(document.createTextNode("More text, "), null);
span.insertBefore(document.createTextNode("And more text, "), null);
span.insertBefore(document.createTextNode("And even more text. "), null);
span.insertBefore(document.createTextNode(longText), null);
span.insertBefore(document.createTextNode("Because more text "), null);
span.insertBefore(document.createTextNode("Is more text."), null);
}
block.insertBefore(document.createTextNode("] Closing text"), null);
// Now put that entire tree into the body
node.insertBefore(block, null);
}
}
// delete first, last, middle
function testDelete(node)
{
var kid = firstChildOf(node);
dump2("Remove first child", node, kid);
node.removeChild(kid);
kid = lastChildOf(node);
dump2("Remove last child", node, kid);
node.removeChild(kid);
kid = middleChildOf(node);
dump2("Remove middle child", node, kid);
node.removeChild(kid);
}
var body = findContainer(document.documentElement, "BODY");
makeTestDocument(body);
//var span = findContainer(body, "SPAN");
//testDelete(span);
var block = findContainer(body, "DIV");
//testDelete(block);
// delete children of the body (cuz its a pseudo)
testDelete(body);