TraceListenerCollection.cs :  » 2.6.4-mono-.net-core » System.Diagnostics » System » Diagnostics » C# / CSharp Open Source

//
// System.Diagnostics.TraceListenerCollection.cs
//
// Authors:
//   Jonathan Pryor (jonpryor@vt.edu)
//
// Comments from John R. Hicks <angryjohn69@nc.rr.com> original implementation 
// can be found at: /mcs/docs/apidocs/xml/en/System.Diagnostics
//
// (C) 2002 Jonathan Pryor
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//


using System;
using System.Collections;
using System.Diagnostics;
using System.Globalization;

namespace System.Diagnostics{

  public class TraceListenerCollection : IList, ICollection, IEnumerable {

    private ArrayList listeners = ArrayList.Synchronized (new ArrayList (1));

    internal TraceListenerCollection ()
      : this (true)
    {
    }

    internal TraceListenerCollection (bool addDefault)
    {
      if (addDefault)
        Add (new DefaultTraceListener ());
    }

    public int Count{
      get {return listeners.Count;}
    }

    public TraceListener this [string name] {
      get {
        lock (listeners.SyncRoot) {
          foreach (TraceListener listener in listeners) {
            if (listener.Name == name)
              return listener;
          }
        }
        return null;
      }
    }

    public TraceListener this [int index] {
      get {return (TraceListener) listeners[index];}
      set {
        InitializeListener (value);
        listeners[index] = value;
      }
    }

    object IList.this [int index] {
      get {return listeners[index];}
      set {
        TraceListener l = (TraceListener) value;
        InitializeListener (l);
        this[index] = l;
      }
    }

    bool ICollection.IsSynchronized {
      get {return listeners.IsSynchronized;}
    }

    object ICollection.SyncRoot {
      get {return listeners.SyncRoot;}
    }

    bool IList.IsFixedSize {
      get {return listeners.IsFixedSize;}
    }

    bool IList.IsReadOnly {
      get {return listeners.IsReadOnly;}
    }

    public int Add (TraceListener listener)
    {
      InitializeListener (listener);
      return listeners.Add (listener);
    }

    internal void Add (TraceListener listener, TraceImplSettings settings)
    {
      listener.IndentLevel = settings.IndentLevel;
      listener.IndentSize  = settings.IndentSize;
      listeners.Add (listener);
    }

    private void InitializeListener (TraceListener listener)
    {
      listener.IndentLevel = TraceImpl.IndentLevel;
      listener.IndentSize = TraceImpl.IndentSize;
    }

    private void InitializeRange (IList listeners)
    {
      int e = listeners.Count;
      for (int i = 0; i != e; ++i)
        InitializeListener (
          (TraceListener) listeners[i]);
    }

    public void AddRange (TraceListener[] value)
    {
      InitializeRange (value);
      listeners.AddRange (value);
    }

    public void AddRange (TraceListenerCollection value)
    {
      InitializeRange (value);
      listeners.AddRange (value.listeners);
    }

    public void Clear ()
    {
      listeners.Clear ();
    }

    public bool Contains (TraceListener listener)
    {
      return listeners.Contains (listener);
    }

    public void CopyTo (TraceListener[] listeners, int index)
    {
      listeners.CopyTo (listeners, index);
    }

    public IEnumerator GetEnumerator ()
    {
      return listeners.GetEnumerator ();
    }

    void ICollection.CopyTo (Array array, int index)
    {
      listeners.CopyTo (array, index);
    }

    int IList.Add (object value)
    {
      if (value is TraceListener)
        return Add ((TraceListener) value);
      throw new NotSupportedException (Locale.GetText (
        "You can only add TraceListener objects to the collection"));
    }

    bool IList.Contains (object value)
    {
      if (value is TraceListener)
        return listeners.Contains (value);
      return false;
    }

    int IList.IndexOf (object value)
    {
      if (value is TraceListener)
        return listeners.IndexOf (value);
      return -1;
    }

    void IList.Insert (int index, object value)
    {
      if (value is TraceListener) {
        Insert (index, (TraceListener) value);
        return;
      }
      throw new NotSupportedException (Locale.GetText (
        "You can only insert TraceListener objects into the collection"));
    }

    void IList.Remove (object value)
    {
      if (value is TraceListener)
        listeners.Remove (value);
    }

    public int IndexOf (TraceListener listener)
    {
      return listeners.IndexOf (listener);
    }

    public void Insert (int index, TraceListener listener)
    {
      InitializeListener (listener);
      listeners.Insert (index, listener);
    }

    public void Remove (string name)
    {
      TraceListener found = null;

      lock (listeners.SyncRoot) {
        foreach (TraceListener listener in listeners) {
          if (listener.Name == name) {
            found = listener;
            break;
          }
        }

        if (found != null)
          listeners.Remove (found);
        else
          throw new ArgumentException (Locale.GetText (
            "TraceListener " + name + " was not in the collection"));
      }
    }

    public void Remove (TraceListener listener)
    {
      listeners.Remove (listener);
    }

    public void RemoveAt (int index)
    {
      listeners.RemoveAt (index);
    }
  }
}