/// <summary>
/// Sets the member of dom specified by name to val.
/// If a member with the specified name does not exist an ArgumentException will be thrown.
/// </summary>
public void SetValue(DocumentObject dom, string name, object val)
{
int dot = name.IndexOf('.');
if (dot == 0)
{
throw new ArgumentException(DomSR.InvalidValueName(name));
}
string trail = null;
if (dot > 0)
{
trail = name.Substring(dot + 1);
name = name.Substring(0, dot);
}
ValueDescriptor vd = this.vds[name];
if (vd == null)
{
throw new ArgumentException(DomSR.InvalidValueName(name));
}
if (trail != null)
{
//REVIEW DaSt: dom.GetValue(name) und rekursiv SetValue aufrufen,
// oder dom.GetValue(name.BisVorletzteElement) und erst SetValue aufrufen.
DocumentObject doc = dom.GetValue(name) as DocumentObject;
doc.SetValue(trail, val);
}
else
{
vd.SetValue(dom, val);
}
}
/// <summary>
/// Sets the member of dom specified by name to null.
/// If a member with the specified name does not exist an ArgumentException will be thrown.
/// </summary>
public void SetNull(DocumentObject dom, string name)
{
ValueDescriptor vd = vds[name];
if (vd == null)
{
throw new ArgumentException(DomSR.InvalidValueName(name));
}
vd.SetNull(dom);
}
/// <summary>
/// Determines whether the member of dom specified by name is null.
/// If a member with the specified name does not exist an ArgumentException will be thrown.
/// </summary>
public virtual bool IsNull(DocumentObject dom, string name)
{
//bool isNull = false;
int dot = name.IndexOf('.');
if (dot == 0)
{
throw new ArgumentException(DomSR.InvalidValueName(name));
}
string trail = null;
if (dot > 0)
{
trail = name.Substring(dot + 1);
name = name.Substring(0, dot);
}
ValueDescriptor vd = this.vds[name];
if (vd == null)
{
throw new ArgumentException(DomSR.InvalidValueName(name));
}
if (vd is NullableDescriptor || vd is ValueTypeDescriptor)
{
if (trail != null)
{
throw new ArgumentException(DomSR.InvalidValueName(name));
}
return(vd.IsNull(dom));
}
DocumentObject docObj = (DocumentObject)vd.GetValue(dom, GV.ReadOnly);
if (docObj == null)
{
return(true);
}
if (trail != null)
{
return(docObj.IsNull(trail));
}
else
{
return(docObj.IsNull());
}
// DomValueDescriptor vd = vds[name];
// if (vd == null)
// throw new ArgumentException(DomSR.InvalidValueName(name));
//
// return vd.IsNull(dom);
}
/// <summary>
/// Gets the object specified by name from dom.
/// </summary>
public object GetValue(DocumentObject dom, string name, GV flags)
{
int dot = name.IndexOf('.');
if (dot == 0)
{
throw new ArgumentException(string.Format(AppResources.InvalidValueName, name));
}
string trail = null;
if (dot > 0)
{
trail = name.Substring(dot + 1);
name = name.Substring(0, dot);
}
ValueDescriptor vd = this.vds[name];
if (vd == null)
{
throw new ArgumentException(string.Format(AppResources.InvalidValueName, name));
}
object value = vd.GetValue(dom, flags);
if (value == null && flags == GV.GetNull) //??? oder auch GV.ReadOnly?
{
return(null);
}
//REVIEW DaSt: Sollte beim GV.ReadWrite das Objekt angelegt werden?
if (trail != null)
{
if (value == null || trail == "")
{
throw new ArgumentException(string.Format(AppResources.InvalidValueName, name));
}
DocumentObject doc = value as DocumentObject;
if (doc == null)
{
throw new ArgumentException(string.Format(AppResources.InvalidValueName, name));
}
value = doc.GetValue(trail, flags);
}
return(value);
}
/// <summary>
/// Determines whether all members of the specified dom are null. If dom contains no members IsNull
/// returns true.
/// </summary>
public bool IsNull(DocumentObject dom)
{
int count = vds.Count;
for (int index = 0; index < count; index++)
{
ValueDescriptor vd = vds[index];
if (vd.IsRefOnly)
{
continue;
}
if (!vd.IsNull(dom))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Adds a value descriptor for each field and property found in type to meta.
/// </summary>
static void AddValueDescriptors(Meta meta, Type type)
{
var fieldInfos = type.GetRuntimeFields(); //(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (FieldInfo fieldInfo in fieldInfos)
{
#if DEBUG_
string name = fieldInfo.Name;
if (name == "parent")
{
name.GetType();
}
#endif
var dvs = fieldInfo.GetCustomAttributes <DVAttribute>(false);
if (dvs.Count() == 1)
{
ValueDescriptor vd = ValueDescriptor.CreateValueDescriptor(fieldInfo, dvs.First());
meta.ValueDescriptors.Add(vd);
}
}
PropertyInfo[] propInfos = type.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (PropertyInfo propInfo in propInfos)
{
#if DEBUG_
string name = propInfo.Name;
if (name == "Font")
{
name.GetType();
}
#endif
var dvs = propInfo.GetCustomAttributes <DVAttribute>(false);
if (dvs.Count() == 1)
{
ValueDescriptor vd = ValueDescriptor.CreateValueDescriptor(propInfo, dvs.First());
meta.ValueDescriptors.Add(vd);
}
}
}
/// <summary>
/// Adds the specified ValueDescriptor.
/// </summary>
public int Add(ValueDescriptor vd)
{
this.hashTable.Add(vd.ValueName, vd);
return(this.arrayList.Add(vd));
}
/// <summary>
/// Determines whether this meta contains a value with the specified name.
/// </summary>
public bool HasValue(string name)
{
ValueDescriptor vd = this.vds[name];
return(vd != null);
}