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//
// System.Web.UI.WebControls.SettingValueElement.cs
//
// Authors:
// Chris Toshok (toshok@ximian.com)
//
// (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.
//
using System;
using System.Reflection;
#if (XML_DEP)
using System.Xml;
#endif
namespace System.Configuration
{
public sealed class SettingValueElement
#if (CONFIGURATION_DEP)
: ConfigurationElement
#endif
{
#if XML_DEP
XmlNode node, original;
#endif
[MonoTODO]
public SettingValueElement ()
{
}
#if (CONFIGURATION_DEP)
[MonoTODO]
protected override ConfigurationPropertyCollection Properties {
get {
return base.Properties;
}
}
#endif
#if (XML_DEP)
public XmlNode ValueXml {
get { return node; }
set { node = value; }
}
#if (CONFIGURATION_DEP)
[MonoTODO]
protected override void DeserializeElement (XmlReader reader, bool serializeCollectionKey)
{
original = new XmlDocument ().ReadNode (reader);
node = original.CloneNode (true);
}
#endif
#endif
public override bool Equals (object settingValue)
{
throw new NotImplementedException ();
}
public override int GetHashCode ()
{
throw new NotImplementedException ();
}
#if (CONFIGURATION_DEP)
protected override bool IsModified ()
{
return original != node;
}
protected override void Reset (ConfigurationElement parentElement)
{
node = null;
}
protected override void ResetModified ()
{
node = original;
}
#endif
#if (XML_DEP) && (CONFIGURATION_DEP)
protected override bool SerializeToXmlElement (XmlWriter writer, string elementName)
{
if (node == null)
return false;
node.WriteTo (writer);
return true;
}
#endif
#if (CONFIGURATION_DEP)
protected override void Unmerge (ConfigurationElement sourceElement, ConfigurationElement parentElement, ConfigurationSaveMode saveMode)
{
if (parentElement != null && sourceElement.GetType() != parentElement.GetType())
throw new ConfigurationErrorsException ("Can't unmerge two elements of different type");
bool isMinimalOrModified = saveMode == ConfigurationSaveMode.Minimal ||
saveMode == ConfigurationSaveMode.Modified;
foreach (PropertyInformation prop in sourceElement.ElementInformation.Properties)
{
if (prop.ValueOrigin == PropertyValueOrigin.Default)
continue;
PropertyInformation unmergedProp = ElementInformation.Properties [prop.Name];
object sourceValue = prop.Value;
if (parentElement == null || !HasValue (parentElement, prop.Name)) {
unmergedProp.Value = sourceValue;
continue;
}
if (sourceValue == null)
continue;
object parentValue = GetItem (parentElement, prop.Name);
if (!PropertyIsElement (prop)) {
if (!object.Equals (sourceValue, parentValue) ||
(saveMode == ConfigurationSaveMode.Full) ||
(saveMode == ConfigurationSaveMode.Modified && prop.ValueOrigin == PropertyValueOrigin.SetHere))
unmergedProp.Value = sourceValue;
continue;
}
var sourceElem = (ConfigurationElement) sourceValue;
if (isMinimalOrModified && !ElementIsModified (sourceElem))
continue;
if (parentValue == null) {
unmergedProp.Value = sourceValue;
continue;
}
var parentElem = (ConfigurationElement) parentValue;
ConfigurationElement copy = (ConfigurationElement) unmergedProp.Value;
ElementUnmerge (copy, sourceElem, parentElem, saveMode);
}
}
bool HasValue (ConfigurationElement element, string propName)
{
PropertyInformation info = element.ElementInformation.Properties [propName];
return info != null && info.ValueOrigin != PropertyValueOrigin.Default;
}
object GetItem (ConfigurationElement element, string property)
{
PropertyInformation pi = ElementInformation.Properties [property];
if (pi == null)
throw new InvalidOperationException ("Property '" + property + "' not found in configuration element");
return pi.Value;
}
bool PropertyIsElement (PropertyInformation prop)
{
return (typeof(ConfigurationElement).IsAssignableFrom (prop.Type));
}
bool ElementIsModified (ConfigurationElement element)
{
return (bool) element.GetType ().GetMethod ("IsModified", BindingFlags.NonPublic | BindingFlags.Instance).Invoke (element, new object [0]);
}
void ElementUnmerge (ConfigurationElement target, ConfigurationElement sourceElement, ConfigurationElement parentElement, ConfigurationSaveMode saveMode)
{
target.GetType ().GetMethod ("Unmerge", BindingFlags.NonPublic | BindingFlags.Instance).Invoke (target, new object [] {sourceElement, parentElement, saveMode});
}
#endif
}
}
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