// set new parameter collection; update collection change notification handler
private void SetPathParameterCollection(PathParameterCollection parameters)
{
if (_parameters != null)
{
_parameters.CollectionChanged -= new NotifyCollectionChangedEventHandler(ParameterCollectionChanged);
}
_parameters = parameters;
if (_parameters != null)
{
_parameters.CollectionChanged += new NotifyCollectionChangedEventHandler(ParameterCollectionChanged);
}
}
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
/// <summary>
/// Construct a PropertyPath from a string and a list of parameters
/// </summary>
public PropertyPath(string path, params object[] pathParameters)
{
if (System.Windows.Threading.Dispatcher.CurrentDispatcher == null)
{
throw new InvalidOperationException(); // This is actually never called since CurrentDispatcher will throw if null.
}
_path = path;
if (pathParameters != null && pathParameters.Length > 0)
{
// initialize internal pathParameters list
PathParameterCollection parameters = new PathParameterCollection(pathParameters);
SetPathParameterCollection(parameters);
}
PrepareSourceValueInfo(null);
}
// "normalize" the path - i.e. load the PathParameters with the early-bound
// accessors, and replace the corresponding parts of the path with
// parameter references
private void NormalizePath()
{
StringBuilder builder = new StringBuilder();
PathParameterCollection parameters = new PathParameterCollection();
for (int i = 0; i < _arySVI.Length; ++i)
{
switch (_arySVI[i].drillIn)
{
case DrillIn.Always:
builder.Append('/');
break;
case DrillIn.Never:
if (_arySVI[i].type == SourceValueType.Property)
{
builder.Append('.');
}
break;
case DrillIn.IfNeeded:
break;
}
switch (_arySVI[i].type)
{
case SourceValueType.Property:
if (_earlyBoundPathParts[i] != null)
{
builder.Append('(');
builder.Append(parameters.Count.ToString(TypeConverterHelper.InvariantEnglishUS.NumberFormat));
builder.Append(')');
parameters.Add(_earlyBoundPathParts[i]);
}
else
{
builder.Append(_arySVI[i].name);
}
break;
case SourceValueType.Indexer:
builder.Append('[');
if (_earlyBoundPathParts[i] != null)
{
IndexerParameterInfo[] aryIPI = (IndexerParameterInfo[])_earlyBoundPathParts[i];
// the params should be at the very least a single empty string
Debug.Assert(aryIPI.Length > 0);
int j = 0;
while (true)
{
IndexerParameterInfo info = aryIPI[j];
if (info.type != null)
{
builder.Append('(');
builder.Append(parameters.Count.ToString(TypeConverterHelper.InvariantEnglishUS.NumberFormat));
builder.Append(')');
parameters.Add(info.value);
}
else
{
builder.Append(info.value);
}
++j;
if (j < aryIPI.Length)
{
builder.Append(',');
}
else
{
break;
}
}
}
else
{
builder.Append(_arySVI[i].name);
}
builder.Append(']');
break;
case SourceValueType.Direct:
break;
}
}
if (parameters.Count > 0)
{
_path = builder.ToString();
SetPathParameterCollection(parameters);
}
}
