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//
// CleanHtmlTextWriter.cs
//
// An HtmlTextWriter that cleans stuff up for you a bit. Helps writing tests
// because you do not have to reproduce the attribute order, etc.
//
// Author:
// Ben Maurer <bmaurer@novell.com>
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//#define TEST_THIS
using System.Web.UI;
using System;
using System.IO;
using System.Collections;
class CleanHtmlTextWriter : HtmlTextWriter {
public CleanHtmlTextWriter (TextWriter tw) : base (tw)
{
tw.NewLine = "\n";
}
ArrayList pending_attrs = new ArrayList ();
ArrayList pending_styles = new ArrayList ();
class PendingStyle : IComparable {
public string name, value;
public HtmlTextWriterStyle s;
public PendingStyle (string name, string value, HtmlTextWriterStyle s)
{
this.name = name;
this.value = value;
this.s = s;
}
public int CompareTo (object o)
{
return string.CompareOrdinal (name, ((PendingStyle) o).name);
}
}
class PendingAttribute : IComparable {
public string name, value;
public HtmlTextWriterAttribute a;
public bool encode;
public bool know_encode;
public PendingAttribute (string name, string value, HtmlTextWriterAttribute a, bool encode, bool know_encode)
{
this.name = name;
this.value = value;
this.a = a;
this.encode = encode;
this.know_encode = know_encode;
}
public int CompareTo (object o)
{
return string.CompareOrdinal (name, ((PendingAttribute) o).name);
}
}
bool filtering = false;
//
// Some idiot at microsoft did not do a sanity check on this api,
// thus forcing me to deal with some serious pain.
//
public override void AddAttribute (HtmlTextWriterAttribute key, string value)
{
if (filtering) {
base.AddAttribute (key, value);
return;
}
pending_attrs.Add (new PendingAttribute (GetAttributeName (key), value, key, false, false));
}
public override void AddAttribute (HtmlTextWriterAttribute key, string value, bool fEncode)
{
if (filtering) {
base.AddAttribute (key, value, fEncode);
return;
}
pending_attrs.Add (new PendingAttribute (GetAttributeName (key), value, key, fEncode, true));
}
public override void AddAttribute (string name, string value)
{
if (filtering) {
base.AddAttribute (name, value);
return;
}
pending_attrs.Add (new PendingAttribute (name, value, 0, false, false));
}
public override void AddAttribute (string name, string value, bool fEncode)
{
if (filtering) {
base.AddAttribute (name, value, fEncode);
return;
}
pending_attrs.Add (new PendingAttribute (name, value, 0, fEncode, true));
}
protected override void AddAttribute (string name, string value, HtmlTextWriterAttribute key)
{
if (filtering) {
base.AddAttribute (name, value, key);
return;
}
pending_attrs.Add (new PendingAttribute (name, value, key, false, false));
}
// TODO: use the above retardation in this stuff
protected override void AddStyleAttribute (string name, string value, HtmlTextWriterStyle s)
{
pending_styles.Add (new PendingStyle (name, value, s));
}
protected override void FilterAttributes ()
{
pending_attrs.Sort ();
pending_styles.Sort ();
filtering = true;
foreach (PendingAttribute a in pending_attrs) {
if (a.a == 0) {
if (a.know_encode)
base.AddAttribute (a.name, a.value, a.encode);
else
base.AddAttribute (a.name, a.value, a.encode);
} else {
if (a.know_encode)
base.AddAttribute (a.a, a.value, a.encode);
else
base.AddAttribute (a.a, a.value, a.encode);
}
}
foreach (PendingStyle s in pending_styles)
base.AddStyleAttribute (s.name, s.value, s.s);
filtering = false;
pending_attrs.Clear ();
pending_styles.Clear ();
base.FilterAttributes ();
}
#if TEST_THIS
static void Main ()
{
HtmlTextWriter w = new CleanHtmlTextWriter (Console.Out);
w.AddAttribute (HtmlTextWriterAttribute.Name, "abcd");
w.AddAttribute (HtmlTextWriterAttribute.Id, "efg");
w.RenderBeginTag (HtmlTextWriterTag.Input);
w.RenderEndTag ();
Console.WriteLine ();
}
#endif
}
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