oracle.ide.model
Class DefaultContainer
java.lang.Object
oracle.ide.model.DefaultDisplayable
oracle.ide.model.DefaultElement
oracle.ide.model.DefaultDocument
oracle.ide.model.DefaultNode
oracle.ide.model.DefaultContainer
- All Implemented Interfaces:
- Category, Container, Data, Dirtyable, Displayable, Document, Element, Folder, LazyLoadable, Locatable, Node, Subject
- public abstract class DefaultContainer
- extends DefaultNode
- implements Container
The DefaultContainer
class is a default implementation of the Container
interface.
No copy constructor is implemented because of the problems with Node
caching that would come up.
- See Also:
DefaultNode
, Container
Field Summary |
protected java.util.ArrayList |
_children
The "final " modifier makes it possible to synchronize on the _children object, since its value can never change. |
Method Summary |
boolean |
add(Element element)
Part of the Folder interface. |
boolean |
add(Element element, boolean notify)
This is a variant of the Folder.add(Element) method that accepts an additional flag that indicates whether or not notifications of the change should be sent to registered observers. |
boolean |
canAdd(Element element)
Part of the Folder interface. |
boolean |
canRemove(Element element)
Part of the Folder interface. |
boolean |
containsChild(Element child)
Returns true if the folder contains the specified child Element ; returns false otherwise. |
java.util.Iterator |
getChildren()
Part of the Element interface. |
boolean |
mayHaveChildren()
Part of the Element interface. |
boolean |
remove(Element element)
Part of the Folder interface. |
boolean |
remove(Element element, boolean notify)
This is a variant of the Folder.remove(Element) method that accepts an additional flag that indiciates whether or not notifications of the change should be sent to registered observers. |
void |
removeAll()
Removes all children from the folder. |
void |
removeAll(boolean notify)
Removes all elements in the Container . |
int |
size()
Returns the current number of children in the folder. |
Methods inherited from class oracle.ide.model.DefaultDocument |
attach, close, copyToImpl, createSubject, detach, ensureOpen, equalsImpl, getInputStream, getLongLabel, getShortLabel, getSubject, getTimestamp, getTimestampDirectly, getToolTipText, getURL, isDirty, isNew, isOpen, isReadOnly, markDirty, notifyObservers, open, refreshTimestamp, save, setOpen, setTimestampDirectly, setURLDirectly |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface oracle.ide.model.Data |
getData |
_children
protected final java.util.ArrayList _children
- The "
final
" modifier makes it possible to synchronize on the _children
object, since its value can never change.
DefaultContainer
public DefaultContainer()
DefaultContainer
public DefaultContainer(java.net.URL url)
mayHaveChildren
public boolean mayHaveChildren()
- Part of the
Element
interface. This implementation always returns true
.
-
- Specified by:
mayHaveChildren
in interface Element
- Overrides:
mayHaveChildren
in class DefaultElement
-
- See Also:
Element.mayHaveChildren()
getChildren
public java.util.Iterator getChildren()
- Part of the
Element
interface. This implementation returns an Iterator
over the current list of children.
-
- Specified by:
getChildren
in interface Element
- Overrides:
getChildren
in class DefaultElement
-
- See Also:
Element.getChildren()
canAdd
public boolean canAdd(Element element)
- Part of the
Folder
interface. The default implementation returns true
if and only if the specified Element
is not null
.
-
- Specified by:
canAdd
in interface Folder
-
- Parameters:
element
- the Element
that is about to be added to this Folder
.
- Returns:
true
if and only if the specified Element
is not null
.
- See Also:
Folder.canAdd(Element)
add
public boolean add(Element element)
- Part of the
Folder
interface. The specified Element
is added to the end of the child list. However, if the Element
is null
, this method does nothing.
No notification is fired by this method.
-
- Specified by:
add
in interface Folder
-
- See Also:
Folder.add(oracle.ide.model.Element)
canRemove
public boolean canRemove(Element element)
- Part of the
Folder
interface. The default implementation returns true
if and only if the specified Element
is not null
.
-
- Specified by:
canRemove
in interface Folder
-
- Parameters:
element
- the Element
that is about to be removed from this Folder
.
- Returns:
true
if and only if the specified Element
is not null
.
- See Also:
Folder.canRemove(Element)
remove
public boolean remove(Element element)
- Part of the
Folder
interface. The specified Element
is removed from the child list. However, if the Element
is null
, this method does nothing. If the Element
occurs more than once in the child list, then only the first instance is removed.
No notification is fired by this method.
-
- Specified by:
remove
in interface Folder
-
- Parameters:
element
- The child object to remove.
- See Also:
Folder.remove(Element)
containsChild
public boolean containsChild(Element child)
- Description copied from interface:
Folder
- Returns
true
if the folder contains the specified child Element
; returns false
otherwise.
-
- Specified by:
containsChild
in interface Folder
size
public int size()
- Description copied from interface:
Folder
- Returns the current number of children in the folder.
-
- Specified by:
size
in interface Folder
removeAll
public void removeAll()
- Description copied from interface:
Folder
- Removes all children from the folder.
-
- Specified by:
removeAll
in interface Folder
add
public boolean add(Element element,
boolean notify)
- Description copied from interface:
Container
- This is a variant of the
Folder.add(Element)
method that accepts an additional flag that indicates whether or not notifications of the change should be sent to registered observers.
-
- Specified by:
add
in interface Container
-
- Parameters:
element
- The Element
to be added to this Container
.
notify
- If true
, any observers are notified of the change. If false
, no notification is sent.
remove
public boolean remove(Element element,
boolean notify)
- Description copied from interface:
Container
- This is a variant of the
Folder.remove(Element)
method that accepts an additional flag that indiciates whether or not notifications of the change should be sent to registered observers.
-
- Specified by:
remove
in interface Container
-
- Parameters:
element
- The Element
to be removed from this Container
.
notify
- If true
, any observers are notified of the change. If false
, no notification is sent.
removeAll
public void removeAll(boolean notify)
- Description copied from interface:
Container
- Removes all elements in the
Container
. The notify
flag indicates whether observers should be notified of the change.
-
- Specified by:
removeAll
in interface Container
-
- Parameters:
notify
- If true
, any observers are notified of the change. If false
, no notification is sent.
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