private void OnPropsInfoDisposed(object sender, EventArgs e)
{
Com2Properties properties = sender as Com2Properties;
if (properties != null)
{
properties.Disposed -= new EventHandler(this.OnPropsInfoDisposed);
lock (this.nativeProps)
{
object targetObject = properties.TargetObject;
if ((targetObject == null) && this.nativeProps.ContainsValue(properties))
{
foreach (DictionaryEntry entry in this.nativeProps)
{
if (entry.Value == properties)
{
targetObject = entry.Key;
break;
}
}
if (targetObject == null)
{
return;
}
}
this.nativeProps.Remove(targetObject);
}
}
}
private Com2Properties GetPropsInfo(object component)
{
// check caches if necessary
//
CheckClear();
// Get the property info Object
//
Com2Properties propsInfo = (Com2Properties)nativeProps[component];
// if we don't have one, create one and set it up
//
if (propsInfo is null || !propsInfo.CheckValid())
{
propsInfo = Com2TypeInfoProcessor.GetProperties(component);
if (propsInfo is not null)
{
propsInfo.Disposed += new EventHandler(OnPropsInfoDisposed);
nativeProps.SetWeak(component, propsInfo);
propsInfo.AddExtendedBrowsingHandlers(extendedBrowsingHandlers);
}
}
return(propsInfo);
}
internal PropertyDescriptor GetDefaultProperty(object component)
{
this.CheckClear(component);
Com2Properties propsInfo = this.GetPropsInfo(component);
if (propsInfo != null)
{
return(propsInfo.DefaultProperty);
}
return(null);
}
/// <include file='doc\ComNativeDescriptor.uex' path='docs/doc[@for="ComNativeDescriptor.GetProperties"]/*' />
/// <devdoc>
/// Props!
/// </devdoc>
public PropertyDescriptorCollection GetProperties(Object component, Attribute[] attributes)
{
Com2Properties propsInfo = GetPropsInfo(component);
if (propsInfo == null)
{
return(PropertyDescriptorCollection.Empty);
}
try {
propsInfo.AlwaysValid = true;
ArrayList propDescList = null;
PropertyDescriptor[] props = propsInfo.Properties;
for (int i = 0; i < props.Length; i++)
{
if (!props[i].Attributes.Contains(attributes))
{
if (propDescList == null)
{
propDescList = new ArrayList();
// add all the ones we've passed
if (i > 0)
{
// since I can't add a subrange!
for (int j = 0; j < i; j++)
{
propDescList.Add(props[j]);
}
}
}
continue;
}
else if (propDescList != null)
{
propDescList.Add(props[i]);
}
}
if (propDescList != null)
{
props = new PropertyDescriptor[propDescList.Count];
propDescList.CopyTo(props, 0);
}
//Debug.Assert(propDescList.Count > 0, "Didn't add any properties! (propInfos=0)");
return(new PropertyDescriptorCollection(props));
}
finally {
propsInfo.AlwaysValid = false;
}
}
/// <include file='doc\ComNativeDescriptor.uex' path='docs/doc[@for="ComNativeDescriptor.GetDefaultProperty"]/*' />
/// <devdoc>
/// Default Property, please
/// </devdoc>
public PropertyDescriptor GetDefaultProperty(Object component)
{
CheckClear(component);
Com2Properties propsInfo = GetPropsInfo(component);
if (propsInfo != null)
{
return(propsInfo.DefaultProperty);
}
return(null);
}
private Com2Properties GetPropsInfo(object component)
{
this.CheckClear(component);
Com2Properties properties = (Com2Properties)this.nativeProps[component];
if ((properties == null) || !properties.CheckValid())
{
properties = Com2TypeInfoProcessor.GetProperties(component);
if (properties != null)
{
properties.Disposed += new EventHandler(this.OnPropsInfoDisposed);
this.nativeProps.SetWeak(component, properties);
properties.AddExtendedBrowsingHandlers(this.extendedBrowsingHandlers);
}
}
return(properties);
}
/// <summary>
/// Props!
/// </summary>
internal PropertyDescriptorCollection GetProperties(object component)
{
Com2Properties propsInfo = GetPropsInfo(component);
if (propsInfo == null)
{
return(PropertyDescriptorCollection.Empty);
}
try
{
propsInfo.AlwaysValid = true;
return(new PropertyDescriptorCollection(propsInfo.Properties));
}
finally
{
propsInfo.AlwaysValid = false;
}
}
internal PropertyDescriptorCollection GetProperties(object component, Attribute[] attributes)
{
Com2Properties propsInfo = GetPropsInfo(component);
if (propsInfo == null)
{
return(PropertyDescriptorCollection.Empty);
}
try {
propsInfo.AlwaysValid = true;
PropertyDescriptor[] props = propsInfo.Properties;
//Debug.Assert(propDescList.Count > 0, "Didn't add any properties! (propInfos=0)");
return(new PropertyDescriptorCollection(props));
}
finally {
propsInfo.AlwaysValid = false;
}
}
internal PropertyDescriptorCollection GetProperties(object component, Attribute[] attributes)
{
PropertyDescriptorCollection descriptors;
Com2Properties propsInfo = this.GetPropsInfo(component);
if (propsInfo == null)
{
return(PropertyDescriptorCollection.Empty);
}
try
{
propsInfo.AlwaysValid = true;
descriptors = new PropertyDescriptorCollection(propsInfo.Properties);
}
finally
{
propsInfo.AlwaysValid = false;
}
return(descriptors);
}
/// <devdoc>
/// Fired when the property info gets disposed.
/// </devdoc>
private void OnPropsInfoDisposed(object sender, EventArgs e)
{
Com2Properties propsInfo = sender as Com2Properties;
if (propsInfo != null)
{
propsInfo.Disposed -= new EventHandler(OnPropsInfoDisposed);
lock (nativeProps) {
// find the key
object key = propsInfo.TargetObject;
if (key == null && nativeProps.ContainsValue(propsInfo))
{
// need to find it - the target object has probably been cleaned out
// of the Com2Properties object already, so we run through the
// hashtable looking for the value, so we know what key to remove.
//
foreach (DictionaryEntry de in nativeProps)
{
if (de.Value == propsInfo)
{
key = de.Key;
break;
}
}
if (key == null)
{
Debug.Fail("Failed to find Com2 properties key on dispose.");
return;
}
}
nativeProps.Remove(key);
}
}
}
/// <include file='doc\ComNativeDescriptor.uex' path='docs/doc[@for="ComNativeDescriptor.GetPropsInfo"]/*' />
/// <devdoc>
/// Gets the properties manager for an Object.
/// </devdoc>
private Com2Properties GetPropsInfo(Object component)
{
// check caches if necessary
//
CheckClear(component);
// Get the property info Object
//
Com2Properties propsInfo = (Com2Properties)nativeProps[component.GetHashCode()];
// if we dont' have one, create one and set it up
//
if (propsInfo == null || !propsInfo.CheckValid())
{
propsInfo = Com2TypeInfoProcessor.GetProperties(component);
if (propsInfo != null)
{
propsInfo.AddToHashtable(nativeProps);
propsInfo.AddExtendedBrowsingHandlers(extendedBrowsingHandlers);
}
}
return(propsInfo);
}
/// <include file='doc\ComNativeDescriptor.uex' path='docs/doc[@for="ComNativeDescriptor.CheckClear"]/*' />
/// <devdoc>
/// Checks all our property manages to see if any have become invalid.
/// </devdoc>
private void CheckClear(Object component)
{
// walk the list every so many calls
if ((++clearCount % CLEAR_INTERVAL) == 0)
{
lock (nativeProps) {
clearCount = 0;
// ArrayList removeList = null;
ICollection propValues = nativeProps.Values;
Com2Properties[] props = new Com2Properties[propValues.Count];
propValues.CopyTo(props, 0);
for (int i = 0; i < props.Length; i++)
{
if (props[i].TooOld)
{
props[i].Dispose();
}
}
}
}
}