#region License Information
/* HeuristicLab
* Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using System;
using System.Drawing;
using HeuristicLab.Common;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
namespace HeuristicLab.Core {
[Item("Executable", "A base class for executables.")]
[StorableClass]
public abstract class Executable : Item, IExecutable {
public override Image ItemImage {
get { return HeuristicLab.Common.Resources.VS2008ImageLibrary.Event; }
}
[Storable]
private ExecutionState executionState;
public ExecutionState ExecutionState {
get { return executionState; }
private set {
if (executionState != value) {
executionState = value;
OnExecutionStateChanged();
}
}
}
[Storable]
private TimeSpan executionTime;
public TimeSpan ExecutionTime {
get { return executionTime; }
protected set {
executionTime = value;
OnExecutionTimeChanged();
}
}
protected Executable() {
executionState = ExecutionState.Stopped;
executionTime = TimeSpan.Zero;
}
public override IDeepCloneable Clone(Cloner cloner) {
Executable clone = (Executable)base.Clone(cloner);
clone.executionState = executionState;
clone.executionTime = executionTime;
return clone;
}
public virtual void Prepare() {
if ((ExecutionState != ExecutionState.Prepared) && (ExecutionState != ExecutionState.Paused) && (ExecutionState != ExecutionState.Stopped))
throw new InvalidOperationException(string.Format("Prepare not allowed in execution state \"{0}\".", ExecutionState));
ExecutionTime = TimeSpan.Zero;
}
public virtual void Start() {
if ((ExecutionState != ExecutionState.Prepared) && (ExecutionState != ExecutionState.Paused))
throw new InvalidOperationException(string.Format("Start not allowed in execution state \"{0}\".", ExecutionState));
}
public virtual void Pause() {
if (ExecutionState != ExecutionState.Started)
throw new InvalidOperationException(string.Format("Pause not allowed in execution state \"{0}\".", ExecutionState));
}
public virtual void Stop() {
if ((ExecutionState != ExecutionState.Started) && (ExecutionState != ExecutionState.Paused))
throw new InvalidOperationException(string.Format("Stop not allowed in execution state \"{0}\".", ExecutionState));
}
public event EventHandler ExecutionStateChanged;
protected virtual void OnExecutionStateChanged() {
EventHandler handler = ExecutionStateChanged;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler ExecutionTimeChanged;
protected virtual void OnExecutionTimeChanged() {
EventHandler handler = ExecutionTimeChanged;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler Prepared;
protected virtual void OnPrepared() {
ExecutionState = ExecutionState.Prepared;
EventHandler handler = Prepared;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler Started;
protected virtual void OnStarted() {
ExecutionState = ExecutionState.Started;
EventHandler handler = Started;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler Paused;
protected virtual void OnPaused() {
ExecutionState = ExecutionState.Paused;
EventHandler handler = Paused;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler Stopped;
protected virtual void OnStopped() {
ExecutionState = ExecutionState.Stopped;
EventHandler handler = Stopped;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler> ExceptionOccurred;
protected virtual void OnExceptionOccurred(Exception exception) {
EventHandler> handler = ExceptionOccurred;
if (handler != null) handler(this, new EventArgs(exception));
}
}
}