private static ActivityBind GetContextBind(ActivityBind activityBind, Activity activity, out Activity contextActivity)
{
if (activityBind == null)
{
throw new ArgumentNullException("activityBind");
}
if (activity == null)
{
throw new ArgumentNullException("activity");
}
BindRecursionContext context = new BindRecursionContext();
ActivityBind bind = activityBind;
contextActivity = activity;
while (bind != null)
{
Activity activity2 = Helpers.ParseActivityForBind(contextActivity, bind.Name);
if (activity2 == null)
{
return(null);
}
object dataContext = activity2;
MemberInfo memberInfo = GetMemberInfo(dataContext.GetType(), bind.Path, null);
if (memberInfo == null)
{
contextActivity = activity2;
return(bind);
}
if (memberInfo is FieldInfo)
{
contextActivity = activity2;
return(bind);
}
if ((!(memberInfo is PropertyInfo) || !((memberInfo as PropertyInfo).PropertyType == typeof(ActivityBind))) || (dataContext == null))
{
return(null);
}
object obj3 = MemberBind.GetValue(memberInfo, dataContext, bind.Path);
if (!(obj3 is ActivityBind))
{
return(null);
}
if (context.Contains(contextActivity, bind))
{
return(null);
}
context.Add(contextActivity, bind);
contextActivity = activity2;
bind = obj3 as ActivityBind;
}
return(bind);
}
private static ActivityBind GetContextBind(ActivityBind activityBind, Activity activity, out Activity contextActivity)
{
if (activityBind == null)
{
throw new ArgumentNullException("activityBind");
}
if (activity == null)
{
throw new ArgumentNullException("activity");
}
BindRecursionContext context = new BindRecursionContext();
ActivityBind bind = activityBind;
contextActivity = activity;
while (bind != null)
{
Activity activity2 = Helpers.ParseActivityForBind(contextActivity, bind.Name);
if (activity2 == null)
{
return null;
}
object dataContext = activity2;
MemberInfo memberInfo = GetMemberInfo(dataContext.GetType(), bind.Path, null);
if (memberInfo == null)
{
contextActivity = activity2;
return bind;
}
if (memberInfo is FieldInfo)
{
contextActivity = activity2;
return bind;
}
if ((!(memberInfo is PropertyInfo) || !((memberInfo as PropertyInfo).PropertyType == typeof(ActivityBind))) || (dataContext == null))
{
return null;
}
object obj3 = MemberBind.GetValue(memberInfo, dataContext, bind.Path);
if (!(obj3 is ActivityBind))
{
return null;
}
if (context.Contains(contextActivity, bind))
{
return null;
}
context.Add(contextActivity, bind);
contextActivity = activity2;
bind = obj3 as ActivityBind;
}
return bind;
}
internal static object ResolveActivityPath(Activity refActivity, string path)
{
PathWalker walker;
if (refActivity == null)
{
throw new ArgumentNullException("refActivity");
}
if (path == null)
{
throw new ArgumentNullException("path");
}
if (path.Length == 0)
{
throw new ArgumentException(SR.GetString("Error_EmptyPathValue"), "path");
}
object value = refActivity;
BindRecursionContext recursionContext = new BindRecursionContext();
if (new PathWalker { MemberFound = (EventHandler<PathMemberInfoEventArgs>) Delegate.Combine(walker.MemberFound, delegate (object sender, PathMemberInfoEventArgs eventArgs) {
if (value == null)
{
eventArgs.Action = PathWalkAction.Cancel;
}
else
{
switch (eventArgs.MemberKind)
{
case PathMemberKind.Field:
try
{
value = (eventArgs.MemberInfo as FieldInfo).GetValue(value);
}
catch (Exception exception)
{
value = null;
eventArgs.Action = PathWalkAction.Cancel;
if (!refActivity.DesignMode)
{
TargetInvocationException exception2 = exception as TargetInvocationException;
throw (exception2 != null) ? exception2.InnerException : exception;
}
}
break;
case PathMemberKind.Event:
{
EventInfo memberInfo = eventArgs.MemberInfo as EventInfo;
DependencyProperty dependencyProperty = DependencyProperty.FromName(memberInfo.Name, value.GetType());
if ((dependencyProperty != null) && (value is DependencyObject))
{
if ((value as DependencyObject).IsBindingSet(dependencyProperty))
{
value = (value as DependencyObject).GetBinding(dependencyProperty);
}
else
{
value = (value as DependencyObject).GetHandler(dependencyProperty);
}
}
break;
}
case PathMemberKind.Property:
if ((eventArgs.MemberInfo as PropertyInfo).CanRead)
{
DependencyProperty property2 = DependencyProperty.FromName(eventArgs.MemberInfo.Name, value.GetType());
if (((property2 != null) && (value is DependencyObject)) && (value as DependencyObject).IsBindingSet(property2))
{
value = (value as DependencyObject).GetBinding(property2);
}
else
{
try
{
value = (eventArgs.MemberInfo as PropertyInfo).GetValue(value, null);
}
catch (Exception exception3)
{
value = null;
eventArgs.Action = PathWalkAction.Cancel;
if (!refActivity.DesignMode)
{
TargetInvocationException exception4 = exception3 as TargetInvocationException;
throw (exception4 != null) ? exception4.InnerException : exception3;
}
}
}
break;
}
eventArgs.Action = PathWalkAction.Cancel;
return;
case PathMemberKind.IndexedProperty:
case PathMemberKind.Index:
try
{
value = (eventArgs.MemberInfo as PropertyInfo).GetValue(value, BindingFlags.GetProperty, null, eventArgs.IndexParameters, CultureInfo.InvariantCulture);
}
catch (Exception exception5)
{
value = null;
eventArgs.Action = PathWalkAction.Cancel;
if (!refActivity.DesignMode)
{
TargetInvocationException exception6 = exception5 as TargetInvocationException;
throw (exception6 != null) ? exception6.InnerException : exception5;
}
}
break;
}
if (((value is ActivityBind) && !eventArgs.LastMemberInThePath) && (GetMemberType(eventArgs.MemberInfo) != typeof(ActivityBind)))
{
while (value is ActivityBind)
{
ActivityBind bind = value as ActivityBind;
if (recursionContext.Contains(refActivity, bind))
{
throw new InvalidOperationException(SR.GetString("Bind_ActivityDataSourceRecursionDetected"));
}
recursionContext.Add(refActivity, bind);
value = bind.GetRuntimeValue(refActivity);
}
}
}
}) }.TryWalkPropertyPath(refActivity.GetType(), path))
{
return value;
}
return null;
}
//This function is used to get the outermost activity bind which is bound to actual field/property
//The function is called in OnRuntimeInitialized and makes sure that we get outer target bind and cache
//it so that at runtime we do not have to walk the bind chain to find the bound member
private static ActivityBind GetContextBind(ActivityBind activityBind, Activity activity, out Activity contextActivity)
{
if (activityBind == null)
throw new ArgumentNullException("activityBind");
if (activity == null)
throw new ArgumentNullException("activity");
BindRecursionContext recursionContext = new BindRecursionContext();
ActivityBind contextBind = activityBind;
contextActivity = activity;
while (contextBind != null)
{
Activity resolvedActivity = Helpers.ParseActivityForBind(contextActivity, contextBind.Name);
if (resolvedActivity == null)
return null;
object dataSourceObject = resolvedActivity;
MemberInfo memberInfo = ActivityBind.GetMemberInfo(dataSourceObject.GetType(), contextBind.Path, null);
if (memberInfo == null)
{
contextActivity = resolvedActivity;
return contextBind;
}
else if (memberInfo is FieldInfo)
{
contextActivity = resolvedActivity;
return contextBind;
}
else if (memberInfo is PropertyInfo && (memberInfo as PropertyInfo).PropertyType == typeof(ActivityBind) && dataSourceObject != null)
{
object value = MemberBind.GetValue(memberInfo, dataSourceObject, contextBind.Path);
if (value is ActivityBind)
{
if (recursionContext.Contains(contextActivity, contextBind))
return null;
recursionContext.Add(contextActivity, contextBind);
contextActivity = resolvedActivity;
contextBind = value as ActivityBind;
}
else
{
return null;
}
}
else
{
return null;
}
}
return contextBind;
}
internal static object ResolveActivityPath(Activity refActivity, string path)
{
if (refActivity == null)
throw new ArgumentNullException("refActivity");
if (path == null)
throw new ArgumentNullException("path");
if (path.Length == 0)
throw new ArgumentException(SR.GetString(SR.Error_EmptyPathValue), "path");
object value = refActivity;
BindRecursionContext recursionContext = new BindRecursionContext();
PathWalker pathWalker = new PathWalker();
pathWalker.MemberFound += delegate(object sender, PathMemberInfoEventArgs eventArgs)
{
// If value is null, we don't want to use GetValue on the MemberInfo
if (value == null)
{
eventArgs.Action = PathWalkAction.Cancel; //need to cancel the walk with the failure return result
return;
}
switch (eventArgs.MemberKind)
{
case PathMemberKind.Field:
try
{
value = (eventArgs.MemberInfo as FieldInfo).GetValue(value);
}
catch (Exception exception)
{
//in some cases the value might not be there yet (e.g. validation vs. runtime)
value = null;
eventArgs.Action = PathWalkAction.Cancel;
//we should throw only if we are at the runtime
if (!refActivity.DesignMode)
{
TargetInvocationException targetInvocationException = exception as TargetInvocationException;
throw (targetInvocationException != null) ? targetInvocationException.InnerException : exception;
}
}
break;
case PathMemberKind.Event:
EventInfo evt = eventArgs.MemberInfo as EventInfo;
// GetValue() returns the actual value of the property. We need the Bind object here.
// Find out if there is a matching dependency property and get the value throw the DP.
DependencyProperty eventDependencyProperty = DependencyProperty.FromName(evt.Name, value.GetType());
if (eventDependencyProperty != null && value is DependencyObject)
{
if ((value as DependencyObject).IsBindingSet(eventDependencyProperty))
value = (value as DependencyObject).GetBinding(eventDependencyProperty);
else
value = (value as DependencyObject).GetHandler(eventDependencyProperty);
}
break;
case PathMemberKind.Property:
if (!(eventArgs.MemberInfo as PropertyInfo).CanRead)
{
eventArgs.Action = PathWalkAction.Cancel;
return;
}
// GetValue() returns the actual value of the property. We need the Bind object here.
// Find out if there is a matching dependency property and get the value throw the DP.
DependencyProperty dependencyProperty = DependencyProperty.FromName(eventArgs.MemberInfo.Name, value.GetType());
if (dependencyProperty != null && value is DependencyObject && (value as DependencyObject).IsBindingSet(dependencyProperty))
value = (value as DependencyObject).GetBinding(dependencyProperty);
else
try
{
value = (eventArgs.MemberInfo as PropertyInfo).GetValue(value, null);
}
catch (Exception exception)
{
//property getter function might throw at design time, validation should not fail bacause of that
value = null;
eventArgs.Action = PathWalkAction.Cancel;
//we should throw only if we are at the runtime
if (!refActivity.DesignMode)
{
TargetInvocationException targetInvocationException = exception as TargetInvocationException;
throw (targetInvocationException != null) ? targetInvocationException.InnerException : exception;
}
}
break;
case PathMemberKind.IndexedProperty:
case PathMemberKind.Index:
try
{
value = (eventArgs.MemberInfo as PropertyInfo).GetValue(value, BindingFlags.GetProperty, null, eventArgs.IndexParameters, CultureInfo.InvariantCulture);
}
catch (Exception exception)
{
//in some cases the value might not be there yet - e.g. array or dictionary is populated at runtime only (validation vs. runtime)
value = null;
eventArgs.Action = PathWalkAction.Cancel;
//we should throw only if we are at the runtime
if (!refActivity.DesignMode)
{
TargetInvocationException targetInvocationException = exception as TargetInvocationException;
throw (targetInvocationException != null) ? targetInvocationException.InnerException : exception;
}
}
break;
}
//need to unwrap the activity bind if we get one - to proceed with the actual field/property/delegate
//do not unwrap if the property/field is itself of type ActivityBind
//we should not unwrap the latest ActivityBind though - only intermediate ones
//avoid circular reference problems with the BindRecursionContext
if (value is ActivityBind && !eventArgs.LastMemberInThePath && GetMemberType(eventArgs.MemberInfo) != typeof(ActivityBind))
{
while (value is ActivityBind)
{
ActivityBind activityBind = value as ActivityBind;
if (recursionContext.Contains(refActivity, activityBind))
throw new InvalidOperationException(SR.GetString(SR.Bind_ActivityDataSourceRecursionDetected));
recursionContext.Add(refActivity, activityBind);
value = activityBind.GetRuntimeValue(refActivity);
}
}
};
if (pathWalker.TryWalkPropertyPath(refActivity.GetType(), path))
return value;
else
return null;
}
internal static object ResolveActivityPath(Activity refActivity, string path)
{
PathWalker walker;
if (refActivity == null)
{
throw new ArgumentNullException("refActivity");
}
if (path == null)
{
throw new ArgumentNullException("path");
}
if (path.Length == 0)
{
throw new ArgumentException(SR.GetString("Error_EmptyPathValue"), "path");
}
object value = refActivity;
BindRecursionContext recursionContext = new BindRecursionContext();
if (new PathWalker {
MemberFound = (EventHandler <PathMemberInfoEventArgs>) Delegate.Combine(walker.MemberFound, delegate(object sender, PathMemberInfoEventArgs eventArgs) {
if (value == null)
{
eventArgs.Action = PathWalkAction.Cancel;
}
else
{
switch (eventArgs.MemberKind)
{
case PathMemberKind.Field:
try
{
value = (eventArgs.MemberInfo as FieldInfo).GetValue(value);
}
catch (Exception exception)
{
value = null;
eventArgs.Action = PathWalkAction.Cancel;
if (!refActivity.DesignMode)
{
TargetInvocationException exception2 = exception as TargetInvocationException;
throw (exception2 != null) ? exception2.InnerException : exception;
}
}
break;
case PathMemberKind.Event:
{
EventInfo memberInfo = eventArgs.MemberInfo as EventInfo;
DependencyProperty dependencyProperty = DependencyProperty.FromName(memberInfo.Name, value.GetType());
if ((dependencyProperty != null) && (value is DependencyObject))
{
if ((value as DependencyObject).IsBindingSet(dependencyProperty))
{
value = (value as DependencyObject).GetBinding(dependencyProperty);
}
else
{
value = (value as DependencyObject).GetHandler(dependencyProperty);
}
}
break;
}
case PathMemberKind.Property:
if ((eventArgs.MemberInfo as PropertyInfo).CanRead)
{
DependencyProperty property2 = DependencyProperty.FromName(eventArgs.MemberInfo.Name, value.GetType());
if (((property2 != null) && (value is DependencyObject)) && (value as DependencyObject).IsBindingSet(property2))
{
value = (value as DependencyObject).GetBinding(property2);
}
else
{
try
{
value = (eventArgs.MemberInfo as PropertyInfo).GetValue(value, null);
}
catch (Exception exception3)
{
value = null;
eventArgs.Action = PathWalkAction.Cancel;
if (!refActivity.DesignMode)
{
TargetInvocationException exception4 = exception3 as TargetInvocationException;
throw (exception4 != null) ? exception4.InnerException : exception3;
}
}
}
break;
}
eventArgs.Action = PathWalkAction.Cancel;
return;
case PathMemberKind.IndexedProperty:
case PathMemberKind.Index:
try
{
value = (eventArgs.MemberInfo as PropertyInfo).GetValue(value, BindingFlags.GetProperty, null, eventArgs.IndexParameters, CultureInfo.InvariantCulture);
}
catch (Exception exception5)
{
value = null;
eventArgs.Action = PathWalkAction.Cancel;
if (!refActivity.DesignMode)
{
TargetInvocationException exception6 = exception5 as TargetInvocationException;
throw (exception6 != null) ? exception6.InnerException : exception5;
}
}
break;
}
if (((value is ActivityBind) && !eventArgs.LastMemberInThePath) && (GetMemberType(eventArgs.MemberInfo) != typeof(ActivityBind)))
{
while (value is ActivityBind)
{
ActivityBind bind = value as ActivityBind;
if (recursionContext.Contains(refActivity, bind))
{
throw new InvalidOperationException(SR.GetString("Bind_ActivityDataSourceRecursionDetected"));
}
recursionContext.Add(refActivity, bind);
value = bind.GetRuntimeValue(refActivity);
}
}
}
})
}.TryWalkPropertyPath(refActivity.GetType(), path))
{
return(value);
}
return(null);
}
