jellyfin/MediaBrowser.Controller/Library/ChildrenChangedEventArgs.cs
2013-02-20 20:33:05 -05:00

138 lines
4.3 KiB
C#

using System.Collections.Concurrent;
using MediaBrowser.Controller.Entities;
using System;
using System.Collections.Generic;
namespace MediaBrowser.Controller.Library
{
/// <summary>
/// Class ChildrenChangedEventArgs
/// </summary>
public class ChildrenChangedEventArgs : EventArgs
{
/// <summary>
/// Gets or sets the folder.
/// </summary>
/// <value>The folder.</value>
public Folder Folder { get; set; }
/// <summary>
/// Gets or sets the items added.
/// </summary>
/// <value>The items added.</value>
public ConcurrentBag<BaseItem> ItemsAdded { get; set; }
/// <summary>
/// Gets or sets the items removed.
/// </summary>
/// <value>The items removed.</value>
public List<BaseItem> ItemsRemoved { get; set; }
/// <summary>
/// Gets or sets the items updated.
/// </summary>
/// <value>The items updated.</value>
public ConcurrentBag<BaseItem> ItemsUpdated { get; set; }
/// <summary>
/// Create the args and set the folder property
/// </summary>
/// <param name="folder">The folder.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public ChildrenChangedEventArgs(Folder folder)
{
if (folder == null)
{
throw new ArgumentNullException();
}
//init the folder property
Folder = folder;
//init the list
ItemsAdded = new ConcurrentBag<BaseItem>();
ItemsRemoved = new List<BaseItem>();
ItemsUpdated = new ConcurrentBag<BaseItem>();
}
/// <summary>
/// Adds the new item.
/// </summary>
/// <param name="item">The item.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public void AddNewItem(BaseItem item)
{
if (item == null)
{
throw new ArgumentNullException();
}
ItemsAdded.Add(item);
}
/// <summary>
/// Adds the updated item.
/// </summary>
/// <param name="item">The item.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public void AddUpdatedItem(BaseItem item)
{
if (item == null)
{
throw new ArgumentNullException();
}
ItemsUpdated.Add(item);
}
/// <summary>
/// Adds the removed item.
/// </summary>
/// <param name="item">The item.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public void AddRemovedItem(BaseItem item)
{
if (item == null)
{
throw new ArgumentNullException();
}
ItemsRemoved.Add(item);
}
/// <summary>
/// Lists the has change.
/// </summary>
/// <param name="list">The list.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
private bool ListHasChange(List<BaseItem> list)
{
return list != null && list.Count > 0;
}
/// <summary>
/// Lists the has change.
/// </summary>
/// <param name="list">The list.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
private bool ListHasChange(ConcurrentBag<BaseItem> list)
{
return list != null && !list.IsEmpty;
}
/// <summary>
/// Gets a value indicating whether this instance has change.
/// </summary>
/// <value><c>true</c> if this instance has change; otherwise, <c>false</c>.</value>
public bool HasChange
{
get { return HasAddOrRemoveChange || ListHasChange(ItemsUpdated); }
}
/// <summary>
/// Gets a value indicating whether this instance has add or remove change.
/// </summary>
/// <value><c>true</c> if this instance has add or remove change; otherwise, <c>false</c>.</value>
public bool HasAddOrRemoveChange
{
get { return ListHasChange(ItemsAdded) || ListHasChange(ItemsRemoved); }
}
}
}