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object --+ | IContainer --+ | IHierarchical
Interface for IContainer
classes whose Items can be
arranged hierarchically. This means that the Items in the container
belong in a tree-like structure, with the following quirks:
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Inherited from Inherited from |
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Inherited from |
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Gets the IDs of all Items that are children of the specified Item. The returned collection is unmodifiable.
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Gets the ID of the parent Item of the specified Item.
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Gets the IDs of all Items in the container that don't have a parent.
Such items are called
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Sets the parent of an Item. The new parent item must exist and be able
to have children. ( This operation is optional.
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Tests if the Item with given ID can have children.
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Sets the given Item's capability to have children. If the Item
identified with The children must be first explicitly removed with setParent or removeItem. This operation is optional. If it is not implemented, the method
always returns
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Tests if the Item specified with
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Tests if the Item specified with Note that being a leaf does not imply whether or not an Item is allowed to have children.
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Removes the Item identified by Note that this does not remove any children the item might have.
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