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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;
using Tango.Integration.Observables;
using Tango.MachineStudio.Common;
using Tango.MachineStudio.Common.Authentication;
using Tango.MachineStudio.Common.Modules;
using Tango.MachineStudio.DB;
using Tango.MachineStudio.MachineDesigner;
using Tango.MachineStudio.Stubs;
namespace Tango.MachineStudio.UI.Modules
{
/// <summary>
/// Represents the Machine Studio default <see cref="IStudioModuleLoader">module loader</see>.
/// </summary>
/// <seealso cref="Tango.Core.ExtendedObject" />
/// <seealso cref="Tango.MachineStudio.Common.Modules.IStudioModuleLoader" />
public class DefaultStudioModuleLoader : ExtendedObject, IStudioModuleLoader
{
private IAuthenticationProvider _authenticationProvider;
private bool _loaded;
public event EventHandler ModulesLoaded;
/// <summary>
/// Initializes a new instance of the <see cref="DefaultStudioModuleLoader"/> class.
/// </summary>
/// <param name="authenticationProvider">The authentication provider.</param>
public DefaultStudioModuleLoader(IAuthenticationProvider authenticationProvider)
{
_authenticationProvider = authenticationProvider;
AllModules = new ObservableCollection<IStudioModule>();
UserModules = new ObservableCollection<IStudioModule>();
_authenticationProvider.CurrentUserChanged += _authenticationProvider_CurrentUserChanged;
}
/// <summary>
/// Handles the authentication provider user changed event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The e.</param>
private void _authenticationProvider_CurrentUserChanged(object sender, User e)
{
LoadModules();
}
private ObservableCollection<IStudioModule> _allModules;
/// <summary>
/// Gets all loaded modules.
/// </summary>
public ObservableCollection<IStudioModule> AllModules
{
get { return _allModules; }
private set { _allModules = value; RaisePropertyChangedAuto(); }
}
private ObservableCollection<IStudioModule> _userModules;
/// <summary>
/// Gets all the user permitted modules.
/// </summary>
public ObservableCollection<IStudioModule> UserModules
{
get { return _userModules; }
private set { _userModules = value; RaisePropertyChangedAuto(); }
}
/// <summary>
/// Loads all available Machine Studio modules.
/// </summary>
public void LoadModules()
{
if (!_loaded)
{
//Preloaded
AllModules.Add(new StubsModule());
AllModules.Add(new DBModule());
AllModules.Add(new MachineDesignerModule());
//Preloaded
AllModules.Clear();
string assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
foreach (var file in Directory.GetFiles(assemblyFolder, "*.dll").Where(x => x.Contains("MachineStudio")))
{
try
{
Assembly moduleAssembly = null;
moduleAssembly = Assembly.LoadFrom(file);
if (moduleAssembly != null)
{
foreach (var moduleType in moduleAssembly.GetTypes().Where(x => !x.IsInterface && typeof(IStudioModule).IsAssignableFrom(x)))
{
if (!AllModules.ToList().Exists(x => x.GetType() == moduleType))
{
var module = Activator.CreateInstance(moduleType) as IStudioModule;
AllModules.Add(module);
}
}
}
}
catch { }
}
_loaded = true;
}
UserModules.Clear();
if (_authenticationProvider.CurrentUser != null)
{
UserModules = AllModules.Where(x => _authenticationProvider.CurrentUser.HasPermission(x.Permission)).ToObservableCollection();
}
ModulesLoaded?.Invoke(this, new EventArgs());
}
}
}
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