private readonly static object _syncLock = new object(); // Synchronization object for multiple threads.
#endregion
#region Properties.
/// <summary>
/// Property to set or return a dependency by name.
/// </summary>
/// <remarks>Setting a dependency to NULL (Nothing in VB.Net) will remove it from the collection.</remarks>
public Dependency this[EditorFile file, string type]
{
get
{
return(_dependencies[new DependencyKey(file, type)]);
}
internal set
{
var key = new DependencyKey(file, type);
bool hasItem = _dependencies.ContainsKey(key);
if (value == null)
{
if (hasItem)
{
_dependencies.Remove(key);
}
return;
}
if ((hasItem) && ((file != value.EditorFile) ||
(!string.Equals(type, value.Type, StringComparison.OrdinalIgnoreCase))))
{
_dependencies.Remove(key);
}
_dependencies[key] = value;
}
}
public override int GetHashCode()
{
unchecked
{
var result = (targetType != null ? targetType.GetHashCode() : 0);
result = (result * 397) ^ (DependencyKey != null ? DependencyKey.GetHashCode() : 0);
return(result);
}
}
/// <summary>
/// Adds an item to the <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </summary>
/// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
/// <exception cref="System.ArgumentNullException">item</exception>
/// <exception cref="System.ArgumentException"></exception>
void ICollection <Dependency> .Add(Dependency item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
var key = new DependencyKey(item);
if (Contains(item.EditorFile, key.Type))
{
throw new ArgumentException(string.Format(APIResources.GOREDIT_ERR_DEPENDENCY_EXISTS, key.Type, key.File.FilePath));
}
_dependencies[key] = item;
}