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