Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / StateValidator.cs / 1305376 / StateValidator.cs
namespace System.Workflow.Activities { #region Imports using System; using System.Text; using System.Reflection; using System.Collections; using System.CodeDom; using System.ComponentModel; using System.ComponentModel.Design; using System.Drawing.Design; using System.Drawing; using System.Diagnostics; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Runtime.Serialization; using System.Collections.Generic; using System.ComponentModel.Design.Serialization; using System.Xml.Serialization; using System.Workflow.ComponentModel.Compiler; using System.Workflow.Activities.Common; #endregion #region StateValidator class [System.Runtime.InteropServices.ComVisible(false)] public class StateActivityValidator : CompositeActivityValidator { public override ValidationErrorCollection Validate(ValidationManager manager, object obj) { ValidationErrorCollection validationErrors = new ValidationErrorCollection(base.Validate(manager, obj)); StateActivity state = obj as StateActivity; if (state == null) throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(StateActivity).FullName), "obj"); // First we validate contaiment if (state.Parent != null) { if (StateMachineHelpers.IsStateMachine(state)) { validationErrors.Add(new ValidationError(SR.GetError_StateMachineWorkflowMustBeARootActivity(), ErrorNumbers.Error_StateMachineWorkflowMustBeARootActivity)); return validationErrors; } else { // Make sure that a State is always contained in // another State or StateMachineWorkflow. State machine // within a sequential workflow is not supported if (!(state.Parent is StateActivity)) { validationErrors.Add(new ValidationError(SR.GetError_InvalidStateActivityParent(), ErrorNumbers.Error_InvalidStateActivityParent)); return validationErrors; } } } if (state.Parent == null && !StateMachineHelpers.IsStateMachine(state)) { ValidateCustomStateActivity(state, validationErrors); } if (StateMachineHelpers.IsLeafState(state)) { ValidateLeafState(state, validationErrors); } else if (StateMachineHelpers.IsRootState(state)) { ValidateRootState(state, validationErrors); } else { ValidateState(state, validationErrors); } ValidateEventDrivenActivities(state, validationErrors); return validationErrors; } private static void ValidateCustomStateActivity(StateActivity state, ValidationErrorCollection validationErrors) { if (state.Activities.Count > 0) { validationErrors.Add(new ValidationError(SR.GetError_BlackBoxCustomStateNotSupported(), ErrorNumbers.Error_BlackBoxCustomStateNotSupported)); } } public override ValidationError ValidateActivityChange(Activity activity, ActivityChangeAction action) { if (activity == null) throw new ArgumentNullException("activity"); if (action == null) throw new ArgumentNullException("action"); if (activity.ExecutionStatus != ActivityExecutionStatus.Initialized && activity.ExecutionStatus != ActivityExecutionStatus.Executing && activity.ExecutionStatus != ActivityExecutionStatus.Closed) { return new ValidationError(SR.GetString(SR.Error_DynamicActivity2, activity.QualifiedName, activity.ExecutionStatus, activity.GetType().FullName), ErrorNumbers.Error_DynamicActivity2); } RemovedActivityAction remove = action as RemovedActivityAction; if (remove != null) { StateActivity removedState = remove.OriginalRemovedActivity as StateActivity; if (removedState != null) { // we don't have a way to check if the removed // activity is executing or not, so if the user is trying to // remove a StateActivity, we simply disallow it. // return new ValidationError( SR.GetError_CantRemoveState(removedState.QualifiedName), ErrorNumbers.Error_CantRemoveState); } if (activity.ExecutionStatus == ActivityExecutionStatus.Executing) { EventDrivenActivity removedEventDriven = remove.OriginalRemovedActivity as EventDrivenActivity; if (removedEventDriven != null) { return new ValidationError( SR.GetError_CantRemoveEventDrivenFromExecutingState(removedEventDriven.QualifiedName, activity.QualifiedName), ErrorNumbers.Error_CantRemoveEventDrivenFromExecutingState); } } } return null; } ////// /// /// ///private static void ValidateLeafState(StateActivity state, ValidationErrorCollection validationErrors) { ValidateLeafStateChildren(state, validationErrors); } /// /// /// /// ///private static void ValidateRootState(StateActivity state, ValidationErrorCollection validationErrors) { ValidateCompositeStateChildren(state, validationErrors); if (StateMachineHelpers.IsStateMachine(state)) { ValidateInitialState(state, validationErrors); ValidateCompletedState(state, validationErrors); } } private static void ValidateState(StateActivity state, ValidationErrorCollection validationErrors) { ValidateCompositeStateChildren(state, validationErrors); } #region Helpers private static void ValidateLeafStateChildren(StateActivity state, ValidationErrorCollection validationErrors) { bool invalidChild = false; foreach (Activity activity in state.Activities) { if (!activity.Enabled) continue; if (activity is EventDrivenActivity || activity is StateInitializationActivity || activity is StateFinalizationActivity) { continue; } else { invalidChild = true; break; } } // validate that all child activities are event driven activities. if (invalidChild) validationErrors.Add(new ValidationError( SR.GetError_InvalidLeafStateChild(), ErrorNumbers.Error_InvalidLeafStateChild)); } private static void ValidateCompositeStateChildren(StateActivity state, ValidationErrorCollection validationErrors) { bool invalidChild = false; foreach (Activity activity in state.Activities) { if (!activity.Enabled) continue; if (activity is EventDrivenActivity || activity is StateActivity) { continue; } else { invalidChild = true; break; } } if (invalidChild) validationErrors.Add(new ValidationError( SR.GetError_InvalidCompositeStateChild(), ErrorNumbers.Error_InvalidCompositeStateChild)); } private static void ValidateInitialState(StateActivity state, ValidationErrorCollection validationErrors) { string initialStateName = StateMachineHelpers.GetInitialStateName(state); if (String.IsNullOrEmpty(initialStateName)) { if (state.Activities.Count > 0) { // we only require an initial state if the state machine is // not empty validationErrors.Add(new ValidationError( SR.GetString(SR.Error_PropertyNotSet, StateMachineWorkflowActivity.InitialStateNamePropertyName), ErrorNumbers.Error_PropertyNotSet, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } } else { StateActivity initialState = StateMachineHelpers.FindStateByName( state, initialStateName); if (initialState == null) { validationErrors.Add(new ValidationError( SR.GetError_InitialStateMustPointToAState(), ErrorNumbers.Error_InitialStateMustPointToAState, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } else { if (!StateMachineHelpers.IsLeafState(initialState)) { validationErrors.Add(new ValidationError( SR.GetError_InitialStateMustPointToALeafNodeState(), ErrorNumbers.Error_InitialStateMustPointToALeafNodeState, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } // InitialState cannot be the completed state string completedStateName = StateMachineHelpers.GetCompletedStateName(state); if (initialStateName == completedStateName) { validationErrors.Add(new ValidationError( SR.GetError_InitialStateMustBeDifferentThanCompletedState(), ErrorNumbers.Error_InitialStateMustBeDifferentThanCompletedState, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } } } } private static void ValidateCompletedState(StateActivity state, ValidationErrorCollection validationErrors) { string completedStateName = StateMachineHelpers.GetCompletedStateName(state); if (!String.IsNullOrEmpty(completedStateName)) { StateActivity completedState = StateMachineHelpers.FindStateByName( state, completedStateName); if (completedState == null) { validationErrors.Add(new ValidationError( SR.GetError_CompletedStateMustPointToAState(), ErrorNumbers.Error_CompletedStateMustPointToAState, false, StateMachineWorkflowActivity.CompletedStateNamePropertyName)); } else { if (StateMachineHelpers.IsLeafState(completedState)) { if (completedState.EnabledActivities.Count > 0) validationErrors.Add(new ValidationError( SR.GetString(SR.Error_CompletedStateCannotContainActivities), ErrorNumbers.Error_CompletedStateCannotContainActivities, false, StateMachineWorkflowActivity.CompletedStateNamePropertyName)); } else { validationErrors.Add(new ValidationError( SR.GetError_CompletedStateMustPointToALeafNodeState(), ErrorNumbers.Error_CompletedStateMustPointToALeafNodeState, false, StateMachineWorkflowActivity.CompletedStateNamePropertyName)); } } } } private static void ValidateEventDrivenActivities(StateActivity state, ValidationErrorCollection validationErrors) { List eventDrivenList = new List (); foreach (Activity activity in state.EnabledActivities) { EventDrivenActivity eventDriven = activity as EventDrivenActivity; if (eventDriven != null) { eventDrivenList.Add(eventDriven); } } foreach (EventDrivenActivity eventDriven in eventDrivenList) { bool result = ValidateMultipleIEventActivity(eventDriven, validationErrors); if (!result) break; } } private static bool ValidateMultipleIEventActivity(EventDrivenActivity eventDriven, ValidationErrorCollection validationErrors) { IEventActivity firstEventActivity = null; if (eventDriven.EnabledActivities.Count > 0) { firstEventActivity = eventDriven.EnabledActivities[0] as IEventActivity; } return ValidateMultipleIEventActivityInCompositeActivity(eventDriven, firstEventActivity, eventDriven, validationErrors); } private static bool ValidateMultipleIEventActivityInCompositeActivity(EventDrivenActivity eventDriven, IEventActivity firstEventActivity, CompositeActivity parent, ValidationErrorCollection validationErrors) { foreach (Activity activity in parent.Activities) { // Skip disabled activities or the first IEventActivity // Note that we don't use EnabledActivities because we want to // enforce this rule inside Cancellation and Exception Handlers. if (!activity.Enabled || activity == firstEventActivity) continue; if (activity is IEventActivity) { validationErrors.Add(new ValidationError( SR.GetString(SR.Error_EventDrivenMultipleEventActivity, eventDriven.Name, typeof(IEventActivity).FullName, typeof(EventDrivenActivity).Name), ErrorNumbers.Error_EventDrivenMultipleEventActivity)); return false; } else { CompositeActivity compositeActivity = activity as CompositeActivity; if (compositeActivity != null) { bool result = ValidateMultipleIEventActivityInCompositeActivity(eventDriven, firstEventActivity, compositeActivity, validationErrors); if (!result) return false; } } } return true; } #endregion } #endregion StateValidator class } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. namespace System.Workflow.Activities { #region Imports using System; using System.Text; using System.Reflection; using System.Collections; using System.CodeDom; using System.ComponentModel; using System.ComponentModel.Design; using System.Drawing.Design; using System.Drawing; using System.Diagnostics; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Runtime.Serialization; using System.Collections.Generic; using System.ComponentModel.Design.Serialization; using System.Xml.Serialization; using System.Workflow.ComponentModel.Compiler; using System.Workflow.Activities.Common; #endregion #region StateValidator class [System.Runtime.InteropServices.ComVisible(false)] public class StateActivityValidator : CompositeActivityValidator { public override ValidationErrorCollection Validate(ValidationManager manager, object obj) { ValidationErrorCollection validationErrors = new ValidationErrorCollection(base.Validate(manager, obj)); StateActivity state = obj as StateActivity; if (state == null) throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(StateActivity).FullName), "obj"); // First we validate contaiment if (state.Parent != null) { if (StateMachineHelpers.IsStateMachine(state)) { validationErrors.Add(new ValidationError(SR.GetError_StateMachineWorkflowMustBeARootActivity(), ErrorNumbers.Error_StateMachineWorkflowMustBeARootActivity)); return validationErrors; } else { // Make sure that a State is always contained in // another State or StateMachineWorkflow. State machine // within a sequential workflow is not supported if (!(state.Parent is StateActivity)) { validationErrors.Add(new ValidationError(SR.GetError_InvalidStateActivityParent(), ErrorNumbers.Error_InvalidStateActivityParent)); return validationErrors; } } } if (state.Parent == null && !StateMachineHelpers.IsStateMachine(state)) { ValidateCustomStateActivity(state, validationErrors); } if (StateMachineHelpers.IsLeafState(state)) { ValidateLeafState(state, validationErrors); } else if (StateMachineHelpers.IsRootState(state)) { ValidateRootState(state, validationErrors); } else { ValidateState(state, validationErrors); } ValidateEventDrivenActivities(state, validationErrors); return validationErrors; } private static void ValidateCustomStateActivity(StateActivity state, ValidationErrorCollection validationErrors) { if (state.Activities.Count > 0) { validationErrors.Add(new ValidationError(SR.GetError_BlackBoxCustomStateNotSupported(), ErrorNumbers.Error_BlackBoxCustomStateNotSupported)); } } public override ValidationError ValidateActivityChange(Activity activity, ActivityChangeAction action) { if (activity == null) throw new ArgumentNullException("activity"); if (action == null) throw new ArgumentNullException("action"); if (activity.ExecutionStatus != ActivityExecutionStatus.Initialized && activity.ExecutionStatus != ActivityExecutionStatus.Executing && activity.ExecutionStatus != ActivityExecutionStatus.Closed) { return new ValidationError(SR.GetString(SR.Error_DynamicActivity2, activity.QualifiedName, activity.ExecutionStatus, activity.GetType().FullName), ErrorNumbers.Error_DynamicActivity2); } RemovedActivityAction remove = action as RemovedActivityAction; if (remove != null) { StateActivity removedState = remove.OriginalRemovedActivity as StateActivity; if (removedState != null) { // we don't have a way to check if the removed // activity is executing or not, so if the user is trying to // remove a StateActivity, we simply disallow it. // return new ValidationError( SR.GetError_CantRemoveState(removedState.QualifiedName), ErrorNumbers.Error_CantRemoveState); } if (activity.ExecutionStatus == ActivityExecutionStatus.Executing) { EventDrivenActivity removedEventDriven = remove.OriginalRemovedActivity as EventDrivenActivity; if (removedEventDriven != null) { return new ValidationError( SR.GetError_CantRemoveEventDrivenFromExecutingState(removedEventDriven.QualifiedName, activity.QualifiedName), ErrorNumbers.Error_CantRemoveEventDrivenFromExecutingState); } } } return null; } /// /// /// /// ///private static void ValidateLeafState(StateActivity state, ValidationErrorCollection validationErrors) { ValidateLeafStateChildren(state, validationErrors); } /// /// /// /// ///private static void ValidateRootState(StateActivity state, ValidationErrorCollection validationErrors) { ValidateCompositeStateChildren(state, validationErrors); if (StateMachineHelpers.IsStateMachine(state)) { ValidateInitialState(state, validationErrors); ValidateCompletedState(state, validationErrors); } } private static void ValidateState(StateActivity state, ValidationErrorCollection validationErrors) { ValidateCompositeStateChildren(state, validationErrors); } #region Helpers private static void ValidateLeafStateChildren(StateActivity state, ValidationErrorCollection validationErrors) { bool invalidChild = false; foreach (Activity activity in state.Activities) { if (!activity.Enabled) continue; if (activity is EventDrivenActivity || activity is StateInitializationActivity || activity is StateFinalizationActivity) { continue; } else { invalidChild = true; break; } } // validate that all child activities are event driven activities. if (invalidChild) validationErrors.Add(new ValidationError( SR.GetError_InvalidLeafStateChild(), ErrorNumbers.Error_InvalidLeafStateChild)); } private static void ValidateCompositeStateChildren(StateActivity state, ValidationErrorCollection validationErrors) { bool invalidChild = false; foreach (Activity activity in state.Activities) { if (!activity.Enabled) continue; if (activity is EventDrivenActivity || activity is StateActivity) { continue; } else { invalidChild = true; break; } } if (invalidChild) validationErrors.Add(new ValidationError( SR.GetError_InvalidCompositeStateChild(), ErrorNumbers.Error_InvalidCompositeStateChild)); } private static void ValidateInitialState(StateActivity state, ValidationErrorCollection validationErrors) { string initialStateName = StateMachineHelpers.GetInitialStateName(state); if (String.IsNullOrEmpty(initialStateName)) { if (state.Activities.Count > 0) { // we only require an initial state if the state machine is // not empty validationErrors.Add(new ValidationError( SR.GetString(SR.Error_PropertyNotSet, StateMachineWorkflowActivity.InitialStateNamePropertyName), ErrorNumbers.Error_PropertyNotSet, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } } else { StateActivity initialState = StateMachineHelpers.FindStateByName( state, initialStateName); if (initialState == null) { validationErrors.Add(new ValidationError( SR.GetError_InitialStateMustPointToAState(), ErrorNumbers.Error_InitialStateMustPointToAState, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } else { if (!StateMachineHelpers.IsLeafState(initialState)) { validationErrors.Add(new ValidationError( SR.GetError_InitialStateMustPointToALeafNodeState(), ErrorNumbers.Error_InitialStateMustPointToALeafNodeState, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } // InitialState cannot be the completed state string completedStateName = StateMachineHelpers.GetCompletedStateName(state); if (initialStateName == completedStateName) { validationErrors.Add(new ValidationError( SR.GetError_InitialStateMustBeDifferentThanCompletedState(), ErrorNumbers.Error_InitialStateMustBeDifferentThanCompletedState, false, StateMachineWorkflowActivity.InitialStateNamePropertyName)); } } } } private static void ValidateCompletedState(StateActivity state, ValidationErrorCollection validationErrors) { string completedStateName = StateMachineHelpers.GetCompletedStateName(state); if (!String.IsNullOrEmpty(completedStateName)) { StateActivity completedState = StateMachineHelpers.FindStateByName( state, completedStateName); if (completedState == null) { validationErrors.Add(new ValidationError( SR.GetError_CompletedStateMustPointToAState(), ErrorNumbers.Error_CompletedStateMustPointToAState, false, StateMachineWorkflowActivity.CompletedStateNamePropertyName)); } else { if (StateMachineHelpers.IsLeafState(completedState)) { if (completedState.EnabledActivities.Count > 0) validationErrors.Add(new ValidationError( SR.GetString(SR.Error_CompletedStateCannotContainActivities), ErrorNumbers.Error_CompletedStateCannotContainActivities, false, StateMachineWorkflowActivity.CompletedStateNamePropertyName)); } else { validationErrors.Add(new ValidationError( SR.GetError_CompletedStateMustPointToALeafNodeState(), ErrorNumbers.Error_CompletedStateMustPointToALeafNodeState, false, StateMachineWorkflowActivity.CompletedStateNamePropertyName)); } } } } private static void ValidateEventDrivenActivities(StateActivity state, ValidationErrorCollection validationErrors) { List eventDrivenList = new List (); foreach (Activity activity in state.EnabledActivities) { EventDrivenActivity eventDriven = activity as EventDrivenActivity; if (eventDriven != null) { eventDrivenList.Add(eventDriven); } } foreach (EventDrivenActivity eventDriven in eventDrivenList) { bool result = ValidateMultipleIEventActivity(eventDriven, validationErrors); if (!result) break; } } private static bool ValidateMultipleIEventActivity(EventDrivenActivity eventDriven, ValidationErrorCollection validationErrors) { IEventActivity firstEventActivity = null; if (eventDriven.EnabledActivities.Count > 0) { firstEventActivity = eventDriven.EnabledActivities[0] as IEventActivity; } return ValidateMultipleIEventActivityInCompositeActivity(eventDriven, firstEventActivity, eventDriven, validationErrors); } private static bool ValidateMultipleIEventActivityInCompositeActivity(EventDrivenActivity eventDriven, IEventActivity firstEventActivity, CompositeActivity parent, ValidationErrorCollection validationErrors) { foreach (Activity activity in parent.Activities) { // Skip disabled activities or the first IEventActivity // Note that we don't use EnabledActivities because we want to // enforce this rule inside Cancellation and Exception Handlers. if (!activity.Enabled || activity == firstEventActivity) continue; if (activity is IEventActivity) { validationErrors.Add(new ValidationError( SR.GetString(SR.Error_EventDrivenMultipleEventActivity, eventDriven.Name, typeof(IEventActivity).FullName, typeof(EventDrivenActivity).Name), ErrorNumbers.Error_EventDrivenMultipleEventActivity)); return false; } else { CompositeActivity compositeActivity = activity as CompositeActivity; if (compositeActivity != null) { bool result = ValidateMultipleIEventActivityInCompositeActivity(eventDriven, firstEventActivity, compositeActivity, validationErrors); if (!result) return false; } } } return true; } #endregion } #endregion StateValidator class } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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