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// Copyright (c) 1999-2002 Microsoft Corporation. All rights reserved.
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
// WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
// THE ENTIRE RISK OF USE OR RESULTS IN CONNECTION WITH THE USE OF THIS CODE
// AND INFORMATION REMAINS WITH THE USER.
//
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Collections.Generic;
using System.Resources;
using System.Reflection;
using System.Globalization;
using System.Security;
using System.Security.Permissions;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Design;
/*********************************************************************
* NOTE: A copy of this file exists at: WF\Common\Shared
* The two files must be kept in sync. Any change made here must also
* be made to WF\Common\Shared\BasePropertyDescriptor.cs
*********************************************************************/
namespace System.Workflow.Activities.Common
{
#region Class PropertyDescriptorUtils
internal static class PropertyDescriptorUtils
{
internal static ISite GetSite(IServiceProvider serviceProvider, object component)
{
ISite site = null;
if (component != null)
{
if ((component is IComponent) && ((IComponent)component).Site != null)
site = ((IComponent)component).Site;
if (site == null && component.GetType().IsArray && (component as object[]).Length > 0 && (component as object[])[0] is IComponent)
site = ((IComponent)(component as object[])[0]).Site;
if (site == null && serviceProvider != null)
{
IReferenceService referenceService = serviceProvider.GetService(typeof(IReferenceService)) as IReferenceService;
if (referenceService != null)
{
IComponent baseComponent = referenceService.GetComponent(component);
if (baseComponent != null)
site = baseComponent.Site;
}
}
}
if (site == null)
site = serviceProvider as ISite;
return site;
}
internal static IComponent GetComponent(ITypeDescriptorContext context)
{
ISite site = (context != null) ? GetSite(context, context.Instance) : null;
return (site != null) ? site.Component : null;
}
internal static Type GetBaseType(PropertyDescriptor property, object owner, IServiceProvider serviceProvider)
{
Type baseType = null;
Type ownerType = owner.GetType();
if (owner != null)
{
IDynamicPropertyTypeProvider basetypeProvider = owner as IDynamicPropertyTypeProvider;
if (basetypeProvider != null)
baseType = basetypeProvider.GetPropertyType(serviceProvider, property.Name);
}
if (baseType == null)
baseType = property.PropertyType;
return baseType;
}
internal static void SetPropertyValue(IServiceProvider serviceProvider, PropertyDescriptor propertyDescriptor, object component, object value)
{
ComponentChangeDispatcher componentChange = new ComponentChangeDispatcher(serviceProvider, component, propertyDescriptor);
try
{
propertyDescriptor.SetValue(component, value);
}
catch (Exception t)
{
// If there was a problem setting the controls property then we get:
// ArgumentException (from properties set method)
// ==> Becomes inner exception of TargetInvocationException
// ==> caught here
// Propagate the original exception up
if (t is TargetInvocationException && t.InnerException != null)
throw t.InnerException;
else
throw t;
}
finally
{
componentChange.Dispose();
}
}
}
#endregion
#region Class ComponentChangeDispatcher
internal sealed class ComponentChangeDispatcher : IDisposable
{
private IServiceProvider serviceProvider;
private object component;
private PropertyDescriptor property;
private object oldValue;
private object newValue;
public ComponentChangeDispatcher(IServiceProvider serviceProvider, object component, PropertyDescriptor propertyDescriptor)
{
this.serviceProvider = serviceProvider;
this.component = component;
this.property = propertyDescriptor;
IComponentChangeService changeService = serviceProvider.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
if (changeService != null)
{
try
{
newValue = oldValue = propertyDescriptor.GetValue(component);
propertyDescriptor.AddValueChanged(component, new EventHandler(OnValueChanged));
changeService.OnComponentChanging(component, propertyDescriptor);
}
catch (CheckoutException coEx)
{
if (coEx == CheckoutException.Canceled)
return;
throw coEx;
}
}
}
public void Dispose()
{
IComponentChangeService changeService = this.serviceProvider.GetService(typeof(IComponentChangeService)) as IComponentChangeService;
if (changeService != null)
changeService.OnComponentChanged(this.component, this.property, this.oldValue, this.newValue);
}
private void OnValueChanged(object sender, EventArgs e)
{
this.newValue = this.property.GetValue(this.component);
this.property.RemoveValueChanged(this.component, new EventHandler(OnValueChanged));
}
}
#endregion
#region Class DynamicPropertyDescriptor
internal class DynamicPropertyDescriptor : PropertyDescriptor
{
private IServiceProvider serviceProvider;
private PropertyDescriptor realPropertyDescriptor;
public DynamicPropertyDescriptor(IServiceProvider serviceProvider, PropertyDescriptor descriptor)
: base(descriptor, null)
{
this.serviceProvider = serviceProvider;
this.realPropertyDescriptor = descriptor;
}
public IServiceProvider ServiceProvider
{
get
{
return this.serviceProvider;
}
}
public PropertyDescriptor RealPropertyDescriptor
{
get
{
return this.realPropertyDescriptor;
}
}
public override string Category
{
get
{
return this.realPropertyDescriptor.Category;
}
}
public override AttributeCollection Attributes
{
get
{
ArrayList attributes = new ArrayList();
attributes.AddRange(this.realPropertyDescriptor.Attributes);
attributes.Add(new MergablePropertyAttribute(false));
return new AttributeCollection((Attribute[])attributes.ToArray(typeof(Attribute)));
}
}
public override TypeConverter Converter
{
get
{
return this.realPropertyDescriptor.Converter;
}
}
public override string Description
{
get
{
return this.realPropertyDescriptor.Description;
}
}
public override string DisplayName
{
get
{
return this.realPropertyDescriptor.DisplayName;
}
}
public override Type ComponentType
{
get
{
return this.realPropertyDescriptor.ComponentType;
}
}
public override Type PropertyType
{
get
{
return this.realPropertyDescriptor.PropertyType;
}
}
public override bool IsReadOnly
{
get
{
return this.realPropertyDescriptor.IsReadOnly;
}
}
public override void ResetValue(object component)
{
this.realPropertyDescriptor.ResetValue(component);
}
public override bool CanResetValue(object component)
{
return this.realPropertyDescriptor.CanResetValue(component);
}
public override bool ShouldSerializeValue(object component)
{
// work around: The real property descriptor is returning false for all the
// SequentialWorkflow class's properties because they all get replaced with
// InheritedPropertyDescriptors on Initialization (in the ComponentDesigner
// base class), which is causing problems in the code-only serialization.
if (string.Equals(this.realPropertyDescriptor.GetType().FullName, "System.ComponentModel.Design.InheritedPropertyDescriptor", StringComparison.Ordinal))
return true;
return this.realPropertyDescriptor.ShouldSerializeValue(component);
}
public override object GetValue(object component)
{
// When a child property is of type event, component could be null.
if (component == null)
return null;
return this.realPropertyDescriptor.GetValue(component);
}
public override void SetValue(object component, object value)
{
if (component is IComponent)
this.realPropertyDescriptor.SetValue(component, value);
else
PropertyDescriptorUtils.SetPropertyValue(ServiceProvider, this.realPropertyDescriptor, component, value);
}
}
#endregion
#region Class ParameterInfoBasedPropertyDescriptor
internal class ParameterInfoBasedPropertyDescriptor : PropertyDescriptor
{
private Type componentType;
private string desc = string.Empty;
private bool avoidDuplication = false;
private object parameter = null; // Could be either ParameterInfo or PropertyInfo
private Type parameterType = null;
private const string parameterPrefix = "(Parameter) ";
internal ParameterInfoBasedPropertyDescriptor(Type componentType, ParameterInfo paramInfo, bool avoidDuplication, params Attribute[] attributes)
: base((paramInfo.Position == -1) ? "(ReturnValue)" : paramInfo.Name, attributes)
{
if (componentType == null)
throw new ArgumentNullException("componentType");
if (paramInfo == null)
throw new ArgumentNullException("paramInfo");
if (paramInfo.ParameterType == null)
throw new InvalidOperationException(SR.GetString(SR.Error_ParameterTypeResolution, paramInfo.Name));
this.componentType = componentType;
this.parameter = paramInfo;
this.avoidDuplication = avoidDuplication;
this.parameterType = paramInfo.ParameterType;
//Build and cache description
string qualifier = String.Empty;
if ((paramInfo.ParameterType != null) && (paramInfo.ParameterType.IsByRef || (paramInfo.IsIn && paramInfo.IsOut)))
qualifier = SR.GetString(SR.Ref);
else if (paramInfo.IsOut || paramInfo.Name == null)
qualifier = SR.GetString(SR.Out);
else
qualifier = SR.GetString(SR.In);
this.desc = SR.GetString(SR.ParameterDescription, paramInfo.ParameterType.FullName);
}
internal ParameterInfoBasedPropertyDescriptor(Type componentType, string propertyName, Type propertyType, bool avoidDuplication, params Attribute[] attributes)
: base(propertyName, attributes)
{
if (componentType == null)
throw new ArgumentNullException("componentType");
if (propertyType == null)
throw new InvalidOperationException(SR.GetString(SR.Error_ParameterTypeResolution, propertyName));
this.componentType = componentType;
this.parameterType = propertyType;
this.avoidDuplication = avoidDuplication;
this.desc = SR.GetString(SR.InvokeParameterDescription, propertyType.FullName.ToString());
}
internal Type ParameterType
{
get
{
Type type = this.parameterType;
if (type.IsByRef)
type = type.GetElementType();
return type;
}
}
public override string Description
{
get
{
return this.desc;
}
}
public override string Category
{
get
{
return SR.GetString(SR.Parameters);
}
}
public override object GetEditor(Type editorBaseType)
{
return TypeDescriptor.GetEditor(PropertyType, editorBaseType);
}
public override string DisplayName
{
get
{
return this.Name;
}
}
public override bool IsReadOnly
{
get
{
return false;
}
}
public override Type ComponentType
{
get
{
return this.componentType;
}
}
public override string Name
{
get
{
if (this.avoidDuplication)
{
// WinOE Bug 10442: should only prefix with "(Parameter)" if there is and existing
// member of the same name.
return GetParameterPropertyName(this.componentType, base.Name);
}
else
return base.Name;
}
}
internal static MemberInfo FindMatchingMember(string name, Type ownerType, bool ignoreCase)
{
MemberInfo matchingMember = null;
foreach (MemberInfo memberInfo in ownerType.GetMembers(BindingFlags.FlattenHierarchy | BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic))
{
if (memberInfo.Name.Equals(name, ((ignoreCase) ? StringComparison.CurrentCultureIgnoreCase : StringComparison.CurrentCulture)))
{
matchingMember = memberInfo;
break;
}
}
return matchingMember;
}
public override Type PropertyType
{
get
{
Type propertyType = ParameterType;
if (propertyType == null)
propertyType = typeof(ActivityBind);
return propertyType;
}
}
public override TypeConverter Converter
{
get
{
//We return this to make sure that we can bind parameters through UI
return new ActivityBindTypeConverter();
}
}
public override AttributeCollection Attributes
{
get
{
ArrayList attributes = new ArrayList();
attributes.AddRange(base.Attributes);
attributes.AddRange(TypeDescriptor.GetAttributes(PropertyType));
return new AttributeCollection((Attribute[])attributes.ToArray(typeof(Attribute)));
}
}
public override void ResetValue(object component)
{
if (PropertyType != null && !PropertyType.IsValueType)
SetValue(component, null);
}
public override bool CanResetValue(object component)
{
return false;
}
public override bool ShouldSerializeValue(object component)
{
return false;
}
public override void SetValue(object component, object value)
{
// the logic for notifications is borrowed from ReflectPropertyDescritpor
if (component == null)
return;
IServiceProvider serviceProvider = GetSite(component);
ComponentChangeDispatcher componentChange = (serviceProvider != null) ? new ComponentChangeDispatcher(serviceProvider, component, this) : null;
try
{
WorkflowParameterBindingCollection parameters = GetParameterBindings(component);
if (parameters != null)
{
string propertyName = String.Empty;
if (this.Name.StartsWith(parameterPrefix, StringComparison.Ordinal))
propertyName = this.Name.Substring(parameterPrefix.Length);
else
propertyName = this.Name;
WorkflowParameterBinding binding = null;
if (parameters.Contains(propertyName))
binding = parameters[propertyName];
else
{
binding = new WorkflowParameterBinding(propertyName);
parameters.Add(binding);
}
if (value is ActivityBind)
binding.SetBinding(WorkflowParameterBinding.ValueProperty, value as ActivityBind);
else
binding.SetValue(WorkflowParameterBinding.ValueProperty, value);
OnValueChanged(component, EventArgs.Empty);
}
}
catch (Exception t)
{
// If there was a problem setting the controls property then we get:
// ArgumentException (from properties set method)
// ==> Becomes inner exception of TargetInvocationException
// ==> caught here
// Propagate the original exception up
if (t is TargetInvocationException && t.InnerException != null)
throw t.InnerException;
else
throw t;
}
finally
{
// Now notify the change service that the change was successful.
if (componentChange != null)
componentChange.Dispose();
}
}
public override object GetValue(object component)
{
WorkflowParameterBindingCollection parameters = GetParameterBindings(component);
string displayName = this.Name;
string propertyName = (displayName.StartsWith(parameterPrefix, StringComparison.Ordinal)) ? displayName.Substring(parameterPrefix.Length) : displayName;
if (parameters != null && parameters.Contains(propertyName))
{
if (parameters[propertyName].IsBindingSet(WorkflowParameterBinding.ValueProperty))
return parameters[propertyName].GetBinding(WorkflowParameterBinding.ValueProperty);
else
return parameters[propertyName].GetValue(WorkflowParameterBinding.ValueProperty);
}
return null;
}
private WorkflowParameterBindingCollection GetParameterBindings(object component)
{
WorkflowParameterBindingCollection retVal = null;
MemberInfo memberInfo = component.GetType().GetProperty("ParameterBindings", BindingFlags.GetProperty | BindingFlags.Public | BindingFlags.Instance | BindingFlags.FlattenHierarchy | BindingFlags.ExactBinding, null, typeof(WorkflowParameterBindingCollection), new Type[] { }, new ParameterModifier[] { });
if (memberInfo != null)
retVal = component.GetType().InvokeMember("ParameterBindings", BindingFlags.GetProperty | BindingFlags.Public | BindingFlags.Instance | BindingFlags.FlattenHierarchy | BindingFlags.ExactBinding, null, component, new object[] { }, CultureInfo.InvariantCulture) as WorkflowParameterBindingCollection;
return retVal;
}
public static string GetParameterPropertyName(Type componentType, string paramName)
{
string paramPropertyName = paramName;
if (FindMatchingMember(paramName, componentType, false) != null)
paramPropertyName = parameterPrefix + paramName;
return paramPropertyName;
}
}
#endregion
#region IPropertyValueProvider Interface
internal interface IPropertyValueProvider
{
ICollection GetPropertyValues(ITypeDescriptorContext typeDescriptorContext);
}
#endregion
#region Class PropertyValueProviderTypeConverter
internal class PropertyValueProviderTypeConverter : TypeConverter
{
public PropertyValueProviderTypeConverter()
{
}
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
// grab all property values
IPropertyValueProvider valuesProvider = null;
object[] instances = context.Instance as object[];
if (instances != null && instances.Length > 0)
valuesProvider = instances[0] as IPropertyValueProvider;
else
valuesProvider = context.Instance as IPropertyValueProvider;
ICollection values = new object[] { };
if (valuesProvider != null)
values = valuesProvider.GetPropertyValues(context);
return new StandardValuesCollection(values);
}
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
return true;
}
}
#endregion
#region Class TypePropertyDescriptor
internal class TypePropertyDescriptor : DynamicPropertyDescriptor
{
public TypePropertyDescriptor(IServiceProvider serviceProvider, PropertyDescriptor actualPropDesc)
: base(serviceProvider, actualPropDesc)
{
}
public override TypeConverter Converter
{
get
{
// work around: a direct type comparison would not work because the types in this file are compiled
// into the component model and the activities dll separately. The assembly name differs thus
// the comparison fails. Work around by getting the type from the same assembly before doing
// the comparison.
TypeConverter baseTypeConverter = base.Converter;
string baseConverterTypeName = baseTypeConverter.GetType().FullName;
Type baseConverterType = Assembly.GetExecutingAssembly().GetType(baseConverterTypeName);
if (baseConverterType != null && typeof(TypePropertyTypeConverter).IsAssignableFrom(baseConverterType))
return baseTypeConverter;
else
return new TypePropertyTypeConverter();
}
}
public override object GetValue(object component)
{
if (component == null)
throw new ArgumentNullException("component");
object value = base.GetValue(component);
if (value == null)
{
// See if there is a value in the user data DesignTimeTypeNames hashtable.
// If yes, it's probably a wrong type name. Show the name anyway.
DependencyObject dependencyObject = component as DependencyObject;
if (dependencyObject != null)
{
object key = DependencyProperty.FromName(this.RealPropertyDescriptor.Name, this.RealPropertyDescriptor.ComponentType);
value = Helpers.GetDesignTimeTypeName(dependencyObject, key);
if (string.IsNullOrEmpty(value as string))
{
key = this.RealPropertyDescriptor.ComponentType.FullName + "." + this.RealPropertyDescriptor.Name;
value = Helpers.GetDesignTimeTypeName(dependencyObject, key);
}
}
}
return value;
}
public override void SetValue(object component, object value)
{
if (component == null)
throw new ArgumentNullException("component");
if (value != null)
{
Type type = value as Type;
ITypeFilterProvider filterProvider = PropertyDescriptorUtils.GetComponent(new TypeDescriptorContext(ServiceProvider, RealPropertyDescriptor, component)) as ITypeFilterProvider;
if (filterProvider != null)
filterProvider.CanFilterType(type, true); //this will throw an exception if the type is not correctly filterable
}
base.SetValue(component, value);
}
}
#endregion
#region Class TypePropertyValueProviderTypeConverter
internal class TypePropertyValueProviderTypeConverter : TypePropertyTypeConverter
{
// NOTE: Copied from PropertyValueProviderTypeConverter.
// The purpose of this type converter is so that we can both provide standard values and
// convert System.Type to string.
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
// grab all property values
IPropertyValueProvider valuesProvider = null;
object[] instances = context.Instance as object[];
if (instances != null && instances.Length > 0)
valuesProvider = instances[0] as IPropertyValueProvider;
else
valuesProvider = context.Instance as IPropertyValueProvider;
ICollection values = new object[] { };
if (valuesProvider != null && context != null)
values = valuesProvider.GetPropertyValues(context);
return new StandardValuesCollection(values);
}
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
return true;
}
}
#endregion
#region Class TypePropertyTypeConverter
internal class TypePropertyTypeConverter : TypeConverter
{
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == null)
throw new ArgumentNullException("sourceType");
if (TypeDescriptor.Equals(sourceType, typeof(string)))
return true;
return base.CanConvertFrom(context, sourceType);
}
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == null)
throw new ArgumentNullException("destinationType");
if (TypeDescriptor.Equals(destinationType, typeof(Type)))
return true;
return base.CanConvertTo(context, destinationType);
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object valueToConvert)
{
string typeName = valueToConvert as string;
if (String.IsNullOrEmpty(typeName))
return null;
if (context != null)
{
ITypeProvider typeProvider = context.GetService(typeof(ITypeProvider)) as ITypeProvider;
if (typeProvider != null)
return typeProvider.GetType(typeName, true);
}
return base.ConvertFrom(context, culture, valueToConvert);
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (value is Type && TypeDescriptor.Equals(destinationType, typeof(string)))
return ((Type)value).FullName;
return base.ConvertTo(context, culture, value, destinationType);
}
}
#endregion
}
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