SettingsBase
using System.ComponentModel;
namespace System.Configuration
{
public abstract class SettingsBase
{
private SettingsPropertyCollection _properties;
private SettingsProviderCollection _providers;
private readonly SettingsPropertyValueCollection _propertyValues;
private SettingsContext _context;
private bool _isSynchronized;
public virtual object this[string propertyName] {
get {
if (IsSynchronized) {
lock (this) {
return GetPropertyValueByName(propertyName);
}
}
return GetPropertyValueByName(propertyName);
}
set {
if (IsSynchronized) {
lock (this) {
SetPropertyValueByName(propertyName, value);
}
} else
SetPropertyValueByName(propertyName, value);
}
}
public virtual SettingsPropertyCollection Properties => _properties;
public virtual SettingsProviderCollection Providers => _providers;
public virtual SettingsPropertyValueCollection PropertyValues => _propertyValues;
public virtual SettingsContext Context => _context;
[Browsable(false)]
public bool IsSynchronized {
get {
return _isSynchronized;
}
}
protected SettingsBase()
{
_propertyValues = new SettingsPropertyValueCollection();
}
private object GetPropertyValueByName(string propertyName)
{
if (Properties == null || _propertyValues == null || Properties.Count == 0)
throw new SettingsPropertyNotFoundException(System.SR.Format(System.SR.SettingsPropertyNotFound, propertyName));
SettingsProperty settingsProperty = Properties[propertyName];
if (settingsProperty == null)
throw new SettingsPropertyNotFoundException(System.SR.Format(System.SR.SettingsPropertyNotFound, propertyName));
SettingsPropertyValue settingsPropertyValue = _propertyValues[propertyName];
if (settingsPropertyValue == null) {
GetPropertiesFromProvider(settingsProperty.Provider);
settingsPropertyValue = _propertyValues[propertyName];
if (settingsPropertyValue == null)
throw new SettingsPropertyNotFoundException(System.SR.Format(System.SR.SettingsPropertyNotFound, propertyName));
}
return settingsPropertyValue.PropertyValue;
}
private void SetPropertyValueByName(string propertyName, object propertyValue)
{
if (Properties == null || _propertyValues == null || Properties.Count == 0)
throw new SettingsPropertyNotFoundException(System.SR.Format(System.SR.SettingsPropertyNotFound, propertyName));
SettingsProperty settingsProperty = Properties[propertyName];
if (settingsProperty == null)
throw new SettingsPropertyNotFoundException(System.SR.Format(System.SR.SettingsPropertyNotFound, propertyName));
if (settingsProperty.IsReadOnly)
throw new SettingsPropertyIsReadOnlyException(System.SR.Format(System.SR.SettingsPropertyReadOnly, propertyName));
if (propertyValue != null && !settingsProperty.PropertyType.IsInstanceOfType(propertyValue))
throw new SettingsPropertyWrongTypeException(System.SR.Format(System.SR.SettingsPropertyWrongType, propertyName));
SettingsPropertyValue settingsPropertyValue = _propertyValues[propertyName];
if (settingsPropertyValue == null) {
GetPropertiesFromProvider(settingsProperty.Provider);
settingsPropertyValue = _propertyValues[propertyName];
if (settingsPropertyValue == null)
throw new SettingsPropertyNotFoundException(System.SR.Format(System.SR.SettingsPropertyNotFound, propertyName));
}
settingsPropertyValue.PropertyValue = propertyValue;
}
public void Initialize(SettingsContext context, SettingsPropertyCollection properties, SettingsProviderCollection providers)
{
_context = context;
_properties = properties;
_providers = providers;
}
public virtual void Save()
{
if (IsSynchronized) {
lock (this) {
SaveCore();
}
} else
SaveCore();
}
private void SaveCore()
{
if (Properties != null && _propertyValues != null && Properties.Count != 0) {
foreach (SettingsProvider provider in Providers) {
SettingsPropertyValueCollection settingsPropertyValueCollection = new SettingsPropertyValueCollection();
foreach (SettingsPropertyValue propertyValue in PropertyValues) {
if (propertyValue.Property.Provider == provider)
settingsPropertyValueCollection.Add(propertyValue);
}
if (settingsPropertyValueCollection.Count > 0)
provider.SetPropertyValues(Context, settingsPropertyValueCollection);
}
foreach (SettingsPropertyValue propertyValue2 in PropertyValues) {
propertyValue2.IsDirty = false;
}
}
}
private void GetPropertiesFromProvider(SettingsProvider provider)
{
SettingsPropertyCollection settingsPropertyCollection = new SettingsPropertyCollection();
foreach (SettingsProperty property in Properties) {
if (property.Provider == provider)
settingsPropertyCollection.Add(property);
}
if (settingsPropertyCollection.Count > 0) {
SettingsPropertyValueCollection propertyValues = provider.GetPropertyValues(Context, settingsPropertyCollection);
foreach (SettingsPropertyValue item in propertyValues) {
if (_propertyValues[item.Name] == null)
_propertyValues.Add(item);
}
}
}
public static SettingsBase Synchronized(SettingsBase settingsBase)
{
settingsBase._isSynchronized = true;
return settingsBase;
}
}
}