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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="ViewModelBase.cs" company="HandBrake Project (http://handbrake.fr)">
// This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
// A Base Class for the View Models which contains reusable code.
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrakeWPF.ViewModels
{
using System;
using System.Diagnostics;
using System.IO;
using Caliburn.Micro;
using HandBrakeWPF.Services.Interfaces;
using HandBrakeWPF.ViewModels.Interfaces;
/// <summary>
/// A Base Class for the View Models which contains reusable code.
/// </summary>
public class ViewModelBase : Screen, IViewModelBase
{
private readonly IUserSettingService userSettingService;
private bool hasLoaded;
private string title;
public ViewModelBase()
{
}
public ViewModelBase(IUserSettingService userSettingService)
{
this.userSettingService = userSettingService;
}
#region Properties
/// <summary>
/// Gets or sets Details.
/// </summary>
public string Title
{
get
{
return this.title;
}
set
{
this.title = value;
this.NotifyOfPropertyChange();
}
}
#endregion
#region Public Methods
/// <summary>
/// Perform any Initialisation for this ViewModelBase.
/// </summary>
public void Load()
{
if (!this.hasLoaded)
{
this.hasLoaded = true;
// Initialise the ViewModels OnLoad method if it exists.
this.OnLoad();
}
}
/// <summary>
/// Load Method for the ViewModel
/// </summary>
public virtual void OnLoad()
{
// Implement in the ViewModel to perform viewmodel specific code.
}
public string GetMru(string key)
{
if (this.userSettingService == null)
{
throw new NotImplementedException("You must use the constructor with UserSettingService to use this function.");
}
string filePath = this.userSettingService.GetUserSetting<string>("mru" + key);
if (!string.IsNullOrEmpty(filePath) && Directory.Exists(filePath))
{
return filePath;
}
// Check if the parent directory still exists.
if (!string.IsNullOrEmpty(filePath) )
{
try
{
DirectoryInfo parentDirectory = Directory.GetParent(filePath);
if (parentDirectory != null && filePath.Contains(parentDirectory.FullName))
{
return parentDirectory.FullName;
}
}
catch (Exception exc)
{
Debug.WriteLine(exc);
}
}
return null;
}
public void SetMru(string key, string value)
{
if (this.userSettingService == null)
{
throw new NotImplementedException("You must use the constructor with UserSettingService to use this function.");
}
if (string.IsNullOrEmpty(value) || !Directory.Exists(value))
{
this.userSettingService.SetUserSetting("mru" + key, string.Empty);
return;
}
this.userSettingService.SetUserSetting("mru" + key, value);
}
#endregion
}
}
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