DynamicActivity.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / DynamicActivity.cs / 1305376 / DynamicActivity.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.Activities 
{
    using System; 
    using System.Activities.Runtime; 
    using System.Activities.Validation;
    using System.Activities.XamlIntegration; 
    using System.Collections;
    using System.Collections.Generic;
    using System.Collections.ObjectModel;
    using System.ComponentModel; 
    using System.Runtime;
    using System.Windows.Markup; 
    using System.Xaml; 

    [ContentProperty("Implementation")] 
    public sealed class DynamicActivity : Activity, ICustomTypeDescriptor, IDynamicActivity
    {
        Activity runtimeImplementation;
        DynamicActivityTypeDescriptor typeDescriptor; 
        Collection attributes;
 
        public DynamicActivity() 
            : base()
        { 
            this.typeDescriptor = new DynamicActivityTypeDescriptor(this);
        }

        public string Name 
        {
            get 
            { 
                return this.typeDescriptor.Name;
            } 
            set
            {
                this.typeDescriptor.Name = value;
            } 
        }
 
        [DependsOn("Name")] 
        public Collection Attributes
        { 
            get
            {
                if (this.attributes == null)
                { 
                    this.attributes = new Collection();
                } 
                return this.attributes; 
            }
        } 

        [Browsable(false)]
        [DependsOn("Attributes")]
        public KeyedCollection Properties 
        {
            get 
            { 
                return this.typeDescriptor.Properties;
            } 
        }

        [DependsOn("Properties")]
        public new Collection Constraints 
        {
            get 
            { 
                return base.Constraints;
            } 
        }

        [XamlDeferLoad(typeof(FuncDeferringLoader), typeof(Activity))]
        [DefaultValue(null)] 
        [Browsable(false)]
        [Ambient] 
        public new Func Implementation 
        {
            get 
            {
                return base.Implementation;
            }
            set 
            {
                base.Implementation = value; 
            } 
        }
 
        KeyedCollection IDynamicActivity.Properties
        {
            get
            { 
                return this.Properties;
            } 
        } 

        internal override void InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) 
        {
            if (this.runtimeImplementation != null)
            {
                executor.ScheduleActivity(this.runtimeImplementation, instance, null, null, null); 
            }
        } 
 
        sealed internal override void OnInternalCacheMetadata(bool createEmptyBindings)
        { 
            Activity body = null;
            if (this.Implementation != null)
            {
                body = this.Implementation(); 
            }
 
            if (body != null) 
            {
                SetImplementationChildrenCollection(new Collection { body }); 
            }

            // Always cache the last body that we returned
            this.runtimeImplementation = body; 

            ReflectedInformation information = new ReflectedInformation(this); 
 
            SetImportedChildrenCollection(information.GetChildren());
            SetVariablesCollection(information.GetVariables()); 
            SetImportedDelegatesCollection(information.GetDelegates());
            SetArgumentsCollection(information.GetArguments(), createEmptyBindings);
        }
 
        AttributeCollection ICustomTypeDescriptor.GetAttributes()
        { 
            return this.typeDescriptor.GetAttributes(); 
        }
 
        string ICustomTypeDescriptor.GetClassName()
        {
            return this.typeDescriptor.GetClassName();
        } 

        string ICustomTypeDescriptor.GetComponentName() 
        { 
            return this.typeDescriptor.GetComponentName();
        } 

        TypeConverter ICustomTypeDescriptor.GetConverter()
        {
            return this.typeDescriptor.GetConverter(); 
        }
 
        EventDescriptor ICustomTypeDescriptor.GetDefaultEvent() 
        {
            return this.typeDescriptor.GetDefaultEvent(); 
        }

        PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty()
        { 
            return this.typeDescriptor.GetDefaultProperty();
        } 
 
        object ICustomTypeDescriptor.GetEditor(Type editorBaseType)
        { 
            return this.typeDescriptor.GetEditor(editorBaseType);
        }

        EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes) 
        {
            return this.typeDescriptor.GetEvents(attributes); 
        } 

        EventDescriptorCollection ICustomTypeDescriptor.GetEvents() 
        {
            return this.typeDescriptor.GetEvents();
        }
 
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
        { 
            return this.typeDescriptor.GetProperties(); 
        }
 
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes)
        {
            return this.typeDescriptor.GetProperties(attributes);
        } 

        object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd) 
        { 
            return this.typeDescriptor.GetPropertyOwner(pd);
        } 
    }

    [ContentProperty("Implementation")]
    public sealed class DynamicActivity : Activity, ICustomTypeDescriptor, IDynamicActivity 
    {
        Activity runtimeImplementation; 
        DynamicActivityTypeDescriptor typeDescriptor; 
        Collection attributes;
 
        public DynamicActivity()
            : base()
        {
            this.typeDescriptor = new DynamicActivityTypeDescriptor(this); 
        }
 
        public string Name 
        {
            get 
            {
                return this.typeDescriptor.Name;
            }
            set 
            {
                this.typeDescriptor.Name = value; 
            } 
        }
 
        [DependsOn("Name")]
        public Collection Attributes
        {
            get 
            {
                if (this.attributes == null) 
                { 
                    this.attributes = new Collection();
                } 
                return this.attributes;
            }
        }
 
        [Browsable(false)]
        [DependsOn("Attributes")] 
        public KeyedCollection Properties 
        {
            get 
            {
                return this.typeDescriptor.Properties;
            }
        } 

        [DependsOn("Properties")] 
        public new Collection Constraints 
        {
            get 
            {
                return base.Constraints;
            }
        } 

        [XamlDeferLoad(typeof(FuncDeferringLoader), typeof(Activity))] 
        [DefaultValue(null)] 
        [Browsable(false)]
        [Ambient] 
        public new Func Implementation
        {
            get
            { 
                return base.Implementation;
            } 
            set 
            {
                base.Implementation = value; 
            }
        }

        KeyedCollection IDynamicActivity.Properties 
        {
            get 
            { 
                return this.Properties;
            } 
        }

        internal override void InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager)
        { 
            if (this.runtimeImplementation != null)
            { 
                executor.ScheduleActivity(this.runtimeImplementation, instance, null, null, null); 
            }
        } 

        sealed internal override void OnInternalCacheMetadataExceptResult(bool createEmptyBindings)
        {
            Activity body = null; 
            if (this.Implementation != null)
            { 
                body = this.Implementation(); 
            }
 
            if (body != null)
            {
                SetImplementationChildrenCollection(new Collection { body });
            } 

            // Always cache the last body that we returned 
            this.runtimeImplementation = body; 

            ReflectedInformation information = new ReflectedInformation(this); 

            SetImportedChildrenCollection(information.GetChildren());
            SetVariablesCollection(information.GetVariables());
            SetImportedDelegatesCollection(information.GetDelegates()); 
            SetArgumentsCollection(information.GetArguments(), createEmptyBindings);
        } 
 
        AttributeCollection ICustomTypeDescriptor.GetAttributes()
        { 
            return this.typeDescriptor.GetAttributes();
        }

        string ICustomTypeDescriptor.GetClassName() 
        {
            return this.typeDescriptor.GetClassName(); 
        } 

        string ICustomTypeDescriptor.GetComponentName() 
        {
            return this.typeDescriptor.GetComponentName();
        }
 
        TypeConverter ICustomTypeDescriptor.GetConverter()
        { 
            return this.typeDescriptor.GetConverter(); 
        }
 
        EventDescriptor ICustomTypeDescriptor.GetDefaultEvent()
        {
            return this.typeDescriptor.GetDefaultEvent();
        } 

        PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty() 
        { 
            return this.typeDescriptor.GetDefaultProperty();
        } 

        object ICustomTypeDescriptor.GetEditor(Type editorBaseType)
        {
            return this.typeDescriptor.GetEditor(editorBaseType); 
        }
 
        EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes) 
        {
            return this.typeDescriptor.GetEvents(attributes); 
        }

        EventDescriptorCollection ICustomTypeDescriptor.GetEvents()
        { 
            return this.typeDescriptor.GetEvents();
        } 
 
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
        { 
            return this.typeDescriptor.GetProperties();
        }

        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes) 
        {
            return this.typeDescriptor.GetProperties(attributes); 
        } 

        object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd) 
        {
            return this.typeDescriptor.GetPropertyOwner(pd);
        }
    } 
}
 
 

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DynamicActivity.cs source code in C# .NET

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