/// <include file='doc\GridEntry.uex' path='docs/doc[@for="GridEntry.GetPropEntries"]/*' />
/// <devdoc>
/// Returns the child GridEntries for this item.
/// </devdoc>
protected virtual GridEntry[] GetPropEntries(GridEntry peParent, object obj, Type objType) {
// we don't want to create subprops for null objects.
if (obj == null) {
return null;
}
GridEntry[] entries = null;
Attribute[] attributes = new Attribute[this.BrowsableAttributes.Count];
this.BrowsableAttributes.CopyTo(attributes, 0);
PropertyTab tab = this.CurrentTab;
Debug.Assert(tab != null, "No current tab!");
try
{
bool forceReadOnly = this.ForceReadOnly;
if (!forceReadOnly)
{
ReadOnlyAttribute readOnlyAttr = (ReadOnlyAttribute)TypeDescriptor.GetAttributes(obj)[typeof(ReadOnlyAttribute)];
forceReadOnly = (readOnlyAttr != null && !readOnlyAttr.IsDefaultAttribute());
}
// do we want to expose sub properties?
//
if (TypeConverter.GetPropertiesSupported(this) || AlwaysAllowExpand)
{
// ask the tab if we have one.
//
PropertyDescriptorCollection props = null;
PropertyDescriptor defProp = null;
if (tab != null)
{
props = tab.GetProperties(this, obj, attributes);
defProp = tab.GetDefaultProperty(obj);
}
else
{
props = TypeConverter.GetProperties(this, obj, attributes);
defProp = TypeDescriptor.GetDefaultProperty(obj);
}
if (props == null)
{
return null;
}
if ((this.PropertySort & PropertySort.Alphabetical) != 0)
{
if (objType == null || !objType.IsArray)
{
props = props.Sort(GridEntry.DisplayNameComparer);
}
PropertyDescriptor[] propertyDescriptors = new PropertyDescriptor[props.Count];
props.CopyTo(propertyDescriptors, 0);
props = new PropertyDescriptorCollection(SortParenProperties(propertyDescriptors));
}
if (defProp == null && props.Count > 0)
{
defProp = props[0];
}
// if the target object is an array and nothing else has provided a set of
// properties to use, then expand the array.
//
if ((props == null || props.Count == 0) && objType != null && objType.IsArray && obj != null)
{
Array objArray = (Array)obj;
entries = new GridEntry[objArray.Length];
for (int i = 0; i < entries.Length; i++)
{
entries[i] = new ArrayElementGridEntry(this.ownerGrid, peParent, i);
}
}
else
{
// otherwise, create the proper GridEntries.
//
bool createInstanceSupported = TypeConverter.GetCreateInstanceSupported(this);
entries = new GridEntry[props.Count];
int index = 0;
// loop through all the props we got and create property descriptors.
//
foreach (PropertyDescriptor pd in props)
{
GridEntry newEntry;
// make sure we've got a valid property, otherwise hide it
//
bool hide = false;
try
{
object owner = obj;
if (obj is ICustomTypeDescriptor)
{
owner = ((ICustomTypeDescriptor)obj).GetPropertyOwner(pd);
}
pd.GetValue(owner);
}
catch (Exception w)
{
if (PbrsAssertPropsSwitch.Enabled)
{
Debug.Fail("Bad property '" + peParent.PropertyLabel + "." + pd.Name + "': " + w.ToString());
}
hide = true;
}
if (createInstanceSupported)
{
newEntry = new ImmutablePropertyDescriptorGridEntry(this.ownerGrid, peParent, pd, hide);
}
else
{
newEntry = new PropertyDescriptorGridEntry(this.ownerGrid, peParent, pd, hide);
}
if (forceReadOnly)
{
newEntry.flags |= FLAG_FORCE_READONLY;
}
// check to see if we've come across the default item.
//
if (pd.Equals(defProp))
{
this.DefaultChild = newEntry;
}
// add it to the array.
//
entries[index++] = newEntry;
}
}
}
}
catch (Exception e)
{
#if DEBUG
if (PbrsAssertPropsSwitch.Enabled) {
// Checked builds are not giving us enough information here. So, output as much stuff as
// we can.
System.Text.StringBuilder b = new System.Text.StringBuilder();
b.Append(string.Format(CultureInfo.CurrentCulture, "********* Debug log written on {0} ************\r\n", DateTime.Now));
b.Append(string.Format(CultureInfo.CurrentCulture, "Exception '{0}' reading properties for object {1}.\r\n", e.GetType().Name, obj));
b.Append(string.Format(CultureInfo.CurrentCulture, "Exception Text: \r\n{0}", e.ToString()));
b.Append(string.Format(CultureInfo.CurrentCulture, "Exception stack: \r\n{0}", e.StackTrace));
string path = string.Format(CultureInfo.CurrentCulture, "{0}\\PropertyGrid.log", Environment.GetEnvironmentVariable("SYSTEMDRIVE"));
System.IO.FileStream s = new System.IO.FileStream(path, System.IO.FileMode.Append, System.IO.FileAccess.Write, System.IO.FileShare.None);
System.IO.StreamWriter w = new System.IO.StreamWriter(s);
w.Write(b.ToString());
w.Close();
s.Close();
RTLAwareMessageBox.Show(null, b.ToString(), SR.GetString(SR.PropertyGridInternalNoProp, path),
MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1, 0);
}
#endif
Debug.Fail("Failed to get properties: " + e.GetType().Name + "," + e.Message + "\n" + e.StackTrace);
}
return entries;
}
protected virtual GridEntry[] GetPropEntries(GridEntry peParent, object obj, System.Type objType)
{
if (obj == null)
{
return null;
}
GridEntry[] entryArray = null;
Attribute[] attributeArray = new Attribute[this.BrowsableAttributes.Count];
this.BrowsableAttributes.CopyTo(attributeArray, 0);
PropertyTab currentTab = this.CurrentTab;
try
{
bool forceReadOnly = this.ForceReadOnly;
if (!forceReadOnly)
{
ReadOnlyAttribute attribute = (ReadOnlyAttribute) TypeDescriptor.GetAttributes(obj)[typeof(ReadOnlyAttribute)];
forceReadOnly = (attribute != null) && !attribute.IsDefaultAttribute();
}
if (!this.TypeConverter.GetPropertiesSupported(this) && !this.AlwaysAllowExpand)
{
return entryArray;
}
PropertyDescriptorCollection descriptors = null;
System.ComponentModel.PropertyDescriptor defaultProperty = null;
if (currentTab != null)
{
descriptors = currentTab.GetProperties(this, obj, attributeArray);
defaultProperty = currentTab.GetDefaultProperty(obj);
}
else
{
descriptors = this.TypeConverter.GetProperties(this, obj, attributeArray);
defaultProperty = TypeDescriptor.GetDefaultProperty(obj);
}
if (descriptors == null)
{
return null;
}
if ((this.PropertySort & System.Windows.Forms.PropertySort.Alphabetical) != System.Windows.Forms.PropertySort.NoSort)
{
if ((objType == null) || !objType.IsArray)
{
descriptors = descriptors.Sort(DisplayNameComparer);
}
System.ComponentModel.PropertyDescriptor[] descriptorArray = new System.ComponentModel.PropertyDescriptor[descriptors.Count];
descriptors.CopyTo(descriptorArray, 0);
descriptors = new PropertyDescriptorCollection(this.SortParenProperties(descriptorArray));
}
if ((defaultProperty == null) && (descriptors.Count > 0))
{
defaultProperty = descriptors[0];
}
if (((descriptors == null) || (descriptors.Count == 0)) && (((objType != null) && objType.IsArray) && (obj != null)))
{
Array array = (Array) obj;
entryArray = new GridEntry[array.Length];
for (int i = 0; i < entryArray.Length; i++)
{
entryArray[i] = new ArrayElementGridEntry(this.ownerGrid, peParent, i);
}
return entryArray;
}
bool createInstanceSupported = this.TypeConverter.GetCreateInstanceSupported(this);
entryArray = new GridEntry[descriptors.Count];
int num2 = 0;
foreach (System.ComponentModel.PropertyDescriptor descriptor2 in descriptors)
{
GridEntry entry;
bool hide = false;
try
{
object component = obj;
if (obj is ICustomTypeDescriptor)
{
component = ((ICustomTypeDescriptor) obj).GetPropertyOwner(descriptor2);
}
descriptor2.GetValue(component);
}
catch (Exception)
{
bool enabled = PbrsAssertPropsSwitch.Enabled;
hide = true;
}
if (createInstanceSupported)
{
entry = new ImmutablePropertyDescriptorGridEntry(this.ownerGrid, peParent, descriptor2, hide);
}
else
{
entry = new PropertyDescriptorGridEntry(this.ownerGrid, peParent, descriptor2, hide);
}
if (forceReadOnly)
{
entry.flags |= 0x400;
}
if (descriptor2.Equals(defaultProperty))
{
this.DefaultChild = entry;
}
entryArray[num2++] = entry;
}
}
catch (Exception)
{
}
return entryArray;
}