#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.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Reflection;
namespace HeuristicLab.Common {
public abstract class StorableContent : Content, IStorableContent {
public StorableContent()
: base() {
this.filename = string.Empty;
this.saveEnabled = true;
}
public StorableContent(bool saveEnabled)
: this() {
this.saveEnabled = saveEnabled;
//NOTE: important do not call propagate changes, because derived objects are not constructed
}
public StorableContent(bool saveEnabled, string filename)
: this(saveEnabled) {
this.Filename = filename;
}
private string filename;
public string Filename {
get { return this.filename; }
set {
if (this.filename != value) {
this.filename = value;
this.OnFilenameChanged();
}
}
}
private bool saveEnabled;
public virtual bool SaveEnabled {
get { return this.saveEnabled; }
set {
if (this.saveEnabled != value) {
this.saveEnabled = value;
this.PropagateSaveEnabledChanges();
this.OnSaveEnabledChanged();
}
}
}
protected void PropagateSaveEnabledChanges() {
Type type = this.GetType();
foreach (FieldInfo fieldInfo in type.GetFields(BindingFlags.Default)) {
if (typeof(IStorableContent).IsAssignableFrom(fieldInfo.GetType())) {
IStorableContent storableContent = (IStorableContent)fieldInfo.GetValue(this);
storableContent.SaveEnabled = this.saveEnabled;
}
}
}
protected abstract void Save();
void IStorableContent.Save() {
if (this.SaveEnabled) {
this.OnSaveOperationStarted();
this.Save();
this.OnSaveOperationFinished(null);
}
}
public void Save(string filename) {
this.Filename = filename;
((IStorableContent)this).Save();
}
protected virtual void SaveAsnychronous() {
ThreadPool.QueueUserWorkItem(
new WaitCallback(delegate(object arg) {
try { this.Save(); }
catch (Exception ex) {
this.OnSaveOperationFinished(ex);
}
})
);
}
void IStorableContent.SaveAsynchronous() {
this.OnSaveOperationStarted();
this.SaveAsnychronous();
this.OnSaveOperationFinished(null);
}
public void SaveAsynchronous(string filename) {
this.Filename = filename;
((IStorableContent)this).SaveAsynchronous();
}
public event EventHandler FilenameChanged;
protected virtual void OnFilenameChanged() {
EventHandler handler = FilenameChanged;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler SaveEnabledChanged;
protected virtual void OnSaveEnabledChanged() {
EventHandler handler = SaveEnabledChanged;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler SaveOperationStarted;
protected virtual void OnSaveOperationStarted() {
EventHandler handler = SaveOperationStarted;
if (handler != null) handler(this, EventArgs.Empty);
}
public event EventHandler> SaveOperationFinished;
protected virtual void OnSaveOperationFinished(Exception ex) {
EventHandler> handler = SaveOperationFinished;
if (handler != null) handler(this, new EventArgs(ex));
}
}
}