oracle.ide.model
Interface Element
- All Superinterfaces:
- Data, Displayable
- All Known Subinterfaces:
- Container, DerivedLibrary, Document, Folder, JavaNode, Layout, Library, LibraryList, Node, Palette, PaletteItem, PalettePage, TextDocument, WorkEnvironment
- All Known Implementing Classes:
- DefaultElement, RunProcess
- public interface Element
- extends Data, Displayable
The Element
interface defines the protocol used by the
IDE to communicate with data objects in order to display the objects
in the UI. For example, objects that need to be shown in an
ExplorerWindow
will need
to implement the Element
interface.
Method Summary |
Attributes |
getAttributes()
This method returns an Attributes object that encodes the
attributes of the Element . |
java.util.Iterator |
getChildren()
This method is part of the Element interface to
provide a convenient way of getting an Iterator over any
contained child Element s without having to test the
object's type with the instanceof operator or having
to downcast to a more specific type. |
boolean |
mayHaveChildren()
This method is part of the Element interface to
provide a convenient way of determining whether an object may
have children without having to test the object's type with the
instanceof operator or having to downcast to a
more specific type. |
Methods inherited from interface oracle.ide.model.Data |
getData |
mayHaveChildren
public boolean mayHaveChildren()
- This method is part of the
Element
interface to
provide a convenient way of determining whether an object may
have children without having to test the object's type with the
instanceof
operator or having to downcast to a
more specific type.
An implementation of Element
that represents a leaf
in a tree structure should return false
from this
method. An implementation of Element
that could
represent a non-leaf in a tree structure should return
true
from this method, even if it does not currently
contain any children.
- Returns:
true
if this Element
may contain
child Element
s.
getChildren
public java.util.Iterator getChildren()
- This method is part of the
Element
interface to
provide a convenient way of getting an Iterator
over any
contained child Element
s without having to test the
object's type with the instanceof
operator or having
to downcast to a more specific type.
An implementation of Element
that represents a leaf
in a tree structure should return null
from this
method. An implementation of Element
that could
represent a non-leaf in a tree structure should return either an
Iterator
over the child Element
s or
null
if there are no children.
- Returns:
- an
Iterator
over any child Element
s
contained by this Element
. If there are no children,
null
is returned.
getAttributes
public Attributes getAttributes()
- This method returns an
Attributes
object that encodes the
attributes of the Element
. Changing the attribute
settings on the return object changes the element attributes.
Subclasses should use their super class attributes object to
define their own attributes. This allows subclasses to
inherit their super class attributes. If a subclass does not
wish to inherit attributes, they should first call
getAttributes().clear()
and define new attributes.