Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / Compiler / Validation / Validator.cs / 1305376 / Validator.cs
namespace System.Workflow.ComponentModel.Compiler { using System; using System.Reflection; using System.Collections; using System.Collections.Generic; #region Class Validator public class Validator { public virtual ValidationErrorCollection Validate(ValidationManager manager, object obj) { if (manager == null) throw new ArgumentNullException("manager"); if (obj == null) throw new ArgumentNullException("obj"); return new ValidationErrorCollection(); } public virtual ValidationError ValidateActivityChange(Activity activity, ActivityChangeAction action) { if (activity == null) throw new ArgumentNullException("activity"); if (action == null) throw new ArgumentNullException("action"); return null; } public virtual ValidationErrorCollection ValidateProperties(ValidationManager manager, object obj) { if (manager == null) throw new ArgumentNullException("manager"); if (obj == null) throw new ArgumentNullException("obj"); ValidationErrorCollection errors = new ValidationErrorCollection(); Activity activity = manager.Context[typeof(Activity)] as Activity; // Validate all members that support validations. Walker walker = new Walker(true); walker.FoundProperty += delegate(Walker w, WalkerEventArgs args) { //If we find dynamic property of the same name then we do not invoke the validator associated with the property //Attached dependency properties will not be found by FromName(). // args.CurrentProperty can be null if the property is of type IList. The walker would go into each item in the // list, but we don't need to validate these items. if (args.CurrentProperty != null) { DependencyProperty dependencyProperty = DependencyProperty.FromName(args.CurrentProperty.Name, args.CurrentProperty.DeclaringType); if (dependencyProperty == null) { object[] validationVisibilityAtrributes = args.CurrentProperty.GetCustomAttributes(typeof(ValidationOptionAttribute), true); ValidationOption validationVisibility = (validationVisibilityAtrributes.Length > 0) ? ((ValidationOptionAttribute)validationVisibilityAtrributes[0]).ValidationOption : ValidationOption.Optional; if (validationVisibility != ValidationOption.None) { errors.AddRange(ValidateProperty(args.CurrentProperty, args.CurrentPropertyOwner, args.CurrentValue, manager)); // don't probe into subproperties as validate object inside the ValidateProperties call does it for us args.Action = WalkerAction.Skip; } } } }; walker.WalkProperties(activity, obj); return errors; } protected string GetFullPropertyName(ValidationManager manager) { if (manager == null) throw new ArgumentNullException("manager"); string fullName = string.Empty; // iterate the properties in the stack starting with the last one int iterator = 0; while (manager.Context[iterator] != null) { if (manager.Context[iterator] is PropertyValidationContext) { PropertyValidationContext propertyValidationContext = manager.Context[iterator] as PropertyValidationContext; if (propertyValidationContext.PropertyName == string.Empty) fullName = string.Empty; // property chain broke... dicard properties after break else if (fullName == string.Empty) fullName = propertyValidationContext.PropertyName; else fullName = propertyValidationContext.PropertyName + "." + fullName; } iterator++; } return fullName; } internal protected ValidationErrorCollection ValidateProperty(PropertyInfo propertyInfo, object propertyOwner, object propertyValue, ValidationManager manager) { ValidationErrorCollection errors = new ValidationErrorCollection(); object[] validationVisibilityAtrributes = propertyInfo.GetCustomAttributes(typeof(ValidationOptionAttribute), true); ValidationOption validationVisibility = (validationVisibilityAtrributes.Length > 0) ? ((ValidationOptionAttribute)validationVisibilityAtrributes[0]).ValidationOption : ValidationOption.Optional; PropertyValidationContext propertyValidationContext = new PropertyValidationContext(propertyOwner, propertyInfo, propertyInfo.Name); manager.Context.Push(propertyValidationContext); try { if (propertyValue != null) { errors.AddRange(ValidationHelpers.ValidateObject(manager, propertyValue)); if (propertyValue is IList) { PropertyValidationContext childContext = new PropertyValidationContext(propertyValue, null, ""); manager.Context.Push(childContext); try { foreach (object child in (IList)propertyValue) errors.AddRange(ValidationHelpers.ValidateObject(manager, child)); } finally { System.Diagnostics.Debug.Assert(manager.Context.Current == childContext, "Unwinding contextStack: the item that is about to be popped is not the one we pushed."); manager.Context.Pop(); } } } } finally { System.Diagnostics.Debug.Assert(manager.Context.Current == propertyValidationContext, "Unwinding contextStack: the item that is about to be popped is not the one we pushed."); manager.Context.Pop(); } return errors; } } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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