Usage: an implementation of this interface is supplied and you must use it as is. You should not reimplement it.
interface CATIDOMDocumentFragment
Interface representing a "lightweight" or "minimal"
CATIDOMDocument object.
It is very common to want to be able to
extract a portion of a document's tree or to create a new fragment of a
document. Imagine implementing a user command like cut or rearranging a
document by moving fragments around. It is desirable to have an object
which can hold such fragments and it is quite natural to use a for this purpose. While it is true that a
object could fulfil this role, a
object can potentially be a heavyweight object, depending on the underlying implementation. What is
really needed for this is a very lightweight object.
is such an object.
Furthermore, various operations -- such as inserting nodes as children of another -- may take objects as arguments; this results in all the child nodes of the being moved to the child list of this node.
The children of a node are zero or more nodes representing the tops of any sub-trees defining the structure of the document. nodes do not need to be well-formed XML documents (although they do need to follow the rules imposed upon well-formed XML parsed entities, which can have multiple top nodes). For example, a might have only one child and that child node could be a node. Such a structure model represents neither an HTML document nor a well-formed XML document.
When a is inserted into a (or indeed any other that may take children) the children of the and not the itself are inserted into the . This makes the very useful when the user wishes to create nodes that are siblings; the acts as the parent of these nodes so that the user can use the standard methods from the interface, such as and .
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