Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / StateMachineAction.cs / 1305376 / StateMachineAction.cs
#region Using directives using System; using System.Collections; using System.Collections.Generic; using System.Collections.Specialized; using System.Reflection; using System.Diagnostics; using System.Runtime.Remoting.Messaging; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Workflow.Runtime; using System.Workflow.Runtime.Hosting; #endregion Using directives namespace System.Workflow.Activities { [Serializable] internal class StateMachineAction { private string _stateName; [NonSerialized] private StateActivity _state; [NonSerialized] private StateActivity _currentState; private StateMachineExecutionState _executionState; private StateMachineSubscriptionManager _subscriptionManager; internal string StateName { get { return _stateName; } } protected StateActivity State { get { return _state; } } protected StateActivity CurrentState { get { return _currentState; } } protected StateMachineExecutionState ExecutionState { get { return _executionState; } } protected StateMachineSubscriptionManager SubscriptionManager { get { return _subscriptionManager; } } internal StateMachineAction(string stateName) { _stateName = stateName; } internal virtual void Execute(ActivityExecutionContext context) { if (context == null) throw new ArgumentNullException("context"); Debug.Assert(context.Activity.QualifiedName.Equals(this.StateName)); _state = (StateActivity)context.Activity; _currentState = StateMachineHelpers.GetCurrentState(context); StateActivity rootState = StateMachineHelpers.GetRootState(_state); _executionState = StateMachineExecutionState.Get(rootState); _subscriptionManager = _executionState.SubscriptionManager; } } [Serializable] internal class CloseStateAction : StateMachineAction { internal CloseStateAction(string stateName) : base(stateName) { } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); StateActivity.LeavingState(context); } } [Serializable] internal class ExecuteChildStateAction : StateMachineAction { private string _childStateName; internal ExecuteChildStateAction(string stateName, string childStateName) : base(stateName) { _childStateName = childStateName; } internal string ChildStateName { get { return _childStateName; } } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); StateActivity childState = (StateActivity)this.State.Activities[this.ChildStateName]; Debug.Assert(childState.Enabled); StateActivity.ExecuteState(context, childState); } } [Serializable] internal class SubscribeAction : StateMachineAction { private string _eventDrivenName; internal SubscribeAction(string stateName, string eventDrivenName) : base(stateName) { _eventDrivenName = eventDrivenName; } internal string EventDrivenName { get { return _eventDrivenName; } } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); EventDrivenActivity eventDriven = (EventDrivenActivity)this.State.Activities[this.EventDrivenName]; Debug.Assert(eventDriven.Enabled); this.SubscriptionManager.SubscribeEventDriven(context, eventDriven); } } [Serializable] internal class UnsubscribeAction : StateMachineAction { private string _eventDrivenName; internal UnsubscribeAction(string stateName, string eventDrivenName) : base(stateName) { _eventDrivenName = eventDrivenName; } internal string EventDrivenName { get { return _eventDrivenName; } } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); EventDrivenActivity eventDriven = (EventDrivenActivity)this.State.Activities[this.EventDrivenName]; Debug.Assert(eventDriven.Enabled); this.SubscriptionManager.UnsubscribeEventDriven(context, eventDriven); } } [Serializable] internal class ExternalEventAction : StateMachineAction { private string _eventDrivenName; internal ExternalEventAction(string stateName, string eventDrivenName) : base(stateName) { _eventDrivenName = eventDrivenName; } internal string EventDrivenName { get { return _eventDrivenName; } } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); EventDrivenActivity eventDriven = (EventDrivenActivity)this.State.Activities[this.EventDrivenName]; Debug.Assert(eventDriven.Enabled); StateActivity.ExecuteEventDriven(context, eventDriven); } } [Serializable] internal class SetStateAction : StateMachineAction { private string _targetStateName; internal SetStateAction(string stateName, string targetStateName) : base(stateName) { _targetStateName = targetStateName; } internal string TargetStateName { get { return _targetStateName; } } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); this.ExecutionState.CalculateStateTransition(this.CurrentState, this.TargetStateName); } } [Serializable] internal class DisableQueuesAction : StateMachineAction { internal DisableQueuesAction(string stateName) : base(stateName) { } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); StateActivity state = this.State; StateActivity rootState = StateMachineHelpers.GetRootState(state); Queuestates = new Queue (); states.Enqueue(rootState); while (states.Count > 0) { state = states.Dequeue(); foreach (Activity activity in state.EnabledActivities) { EventDrivenActivity eventDriven = activity as EventDrivenActivity; if (eventDriven != null) { IEventActivity eventActivity = StateMachineHelpers.GetEventActivity(eventDriven); IComparable queueName = eventActivity.QueueName; if (queueName != null) { WorkflowQueue queue = StateMachineSubscriptionManager.GetWorkflowQueue(context, queueName); if (queue != null) queue.Enabled = this.SubscriptionManager.Subscriptions.ContainsKey(queueName); } } else { StateActivity childState = activity as StateActivity; if (childState != null) states.Enqueue(childState); } } } } } [Serializable] internal class EnteringStateAction : StateMachineAction { internal EnteringStateAction(string stateName) : base(stateName) { } internal override void Execute(ActivityExecutionContext context) { base.Execute(context); context.TrackData(StateActivity.StateChangeTrackingDataKey, this.CurrentState.QualifiedName); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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