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layout/html/tests/TestInsert.js

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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+var count = 0;
+
+function trace(msg)
+{
+  dump("test " + msg + " (" + count + ")\n");
+}
+
+function findBody(node)
+{
+  var children = node.getChildNodes();
+  var length = children.getLength();
+  var child = children.getNextNode();
+  var count = 0;
+  while (count < length) {
+    if (child.getTagName() == "BODY") {
+      return child;
+    }
+    var body = findBody(child);
+    if (null != body) {
+      return body;
+    }
+    child = children.getNextNode();
+    count++;
+  }
+  return null;
+}
+
+function TestInsert(parent, child)
+{
+  var childTag = "(text)";
+  if (child.getNodeType() != Node.TEXT) {
+    childTag = child.getTagName();
+  }
+
+  // Insert a piece of text before the span; this tests insertion at the
+  // beginning
+  trace("insert before [" + parent.getTagName() + "," + childTag + "]");
+  count++;
+  var beforeText = document.createTextNode("before ");
+  parent.insertBefore(beforeText, child);
+
+  // Insert a piece of text before the span; after the above, this tests
+  // insertion in the middle.
+  trace("insert middle [" + parent.getTagName() + "," + childTag + "]");
+  count++;
+  parent.insertBefore(document.createTextNode("middle "), child);
+}
+
+var body = findBody(document.documentElement);
+
+// Create a block child with a span in it
+var block = document.createElement("P", null);
+var span = document.createElement("SPAN", null);
+var spanText = document.createTextNode("Some text");
+span.insertBefore(spanText, null);
+block.insertBefore(span, null);
+
+// Append the block to the body
+body.insertBefore(block, null);
+
+// Insert stuff into the block
+TestInsert(block, span);
+
+// Insert stuff into the span
+TestInsert(span, spanText);