private void AttributeDefinitions_RemoveItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
OnAttributeDefinitionRemovedEvent(e.Item);
e.Item.Owner = null;
if (attributes.Count == 0)
{
flags &= ~BlockTypeFlags.NonConstantAttributeDefinitions;
}
}
private void AttributeDefinitions_ItemAdd(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
OnAttributeDefinitionAddedEvent(e.Item);
e.Item.Owner = this;
// the block has attributes
flags |= BlockTypeFlags.NonConstantAttributeDefinitions;
}
private void AttributeDefinitions_BeforeRemoveItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
// only attribute definitions owned by the actual block can be removed
e.Cancel = !ReferenceEquals(e.Item.Owner, this);
}
private void AttributeDefinitions_RemoveItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
if (this.readOnly)
{
return;
}
this.OnAttributeDefinitionRemovedEvent(e.Item);
e.Item.Owner = null;
if (this.attributes.Count == 0)
{
this.flags &= ~BlockTypeFlags.NonConstantAttributeDefinitions;
}
}
private void AttributeDefinitions_BeforeAddItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
// attributes with the same tag, and attribute definitions already owned by another Block are not allowed in the attributes list.
if (e.Item == null)
{
e.Cancel = true;
}
else if (Flags.HasFlag(BlockTypeFlags.ExternallyDependent))
{
e.Cancel = true;
}
else if (Name.StartsWith(DefaultPaperSpaceName)) // paper space blocks do not contain attribute definitions
{
e.Cancel = true;
}
else if (attributes.ContainsTag(e.Item.Tag))
{
e.Cancel = true;
}
else if (e.Item.Owner != null)
{
// if the block does not belong to a document, all attribute definitions which owner is not null will be rejected
if (Record.Owner == null)
{
e.Cancel = true;
}
// if the block belongs to a document, the entity will be added to the block only if both, the block and the attribute definitions document, are the same
// this is handled by the BlocksRecordCollection
}
else
{
e.Cancel = false;
}
}
private void AttributeDefinitions_BeforeAddItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
// null, attributes with the same tag, and attribute definitions already owned by another Block are not allowed in the attributes list.
if (e.Item == null)
{
e.Cancel = true;
}
else if (this.attributes.ContainsTag(e.Item.Tag))
{
e.Cancel = true;
}
else if (this.readOnly)
{
e.Cancel = true;
}
else if (e.Item.Owner != null)
{
// if the block does not belong to a document, all attribute definitions which owner is not null will be rejected
if (this.Record.Owner == null)
{
e.Cancel = true;
}
// if the block belongs to a document, the entity will be added to the block only if both, the block and the attribute definitions document, are the same
// this is handled by the BlocksRecordCollection
}
else
{
e.Cancel = false;
}
}
private void AttributeDefinitions_RemoveItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
e.Item.Owner = null;
}
private void AttributeDefinitions_ItemAdd(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
e.Item.Owner = this;
}
private void AttributeDefinitions_BeforeAddItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
// null, attributes with the same tag, and attribute definitions already owned by another Block are not allowed in the attributes list.
if (e.Item == null)
{
e.Cancel = true;
}
else if (this.attributes.ContainsTag(e.Item.Tag))
{
e.Cancel = true;
}
else if (e.Item.Owner != null)
{
e.Cancel = true;
}
else
{
e.Cancel = false;
}
}
private void AttributeDefinitions_BeforeAddItem(AttributeDefinitionDictionary sender, AttributeDefinitionDictionaryEventArgs e)
{
// attributes with the same tag, and attribute definitions already owned by another Block are not allowed in the attributes list.
if (e.Item == null)
{
e.Cancel = true;
}
else if (this.Flags.HasFlag(BlockTypeFlags.ExternallyDependent))
{
e.Cancel = true;
}
else if (this.Name.StartsWith(DefaultPaperSpaceName)) // paper space blocks do not contain attribute definitions
{
e.Cancel = true;
}
else if (this.attributes.ContainsTag(e.Item.Tag))
{
e.Cancel = true;
}
else if (e.Item.Owner != null)
{
e.Cancel = true;
}
else
{
e.Cancel = false;
}
}
