oracle.ide.model
Class ContentLevelFolder

java.lang.Object
  oracle.ide.model.RelativeDirectoryContextFolder
      oracle.ide.model.ContentLevelFolder

All Implemented Interfaces:

Displayable, Element, RelativeDirectoryElement, Subject

public final class ContentLevelFolder
extends RelativeDirectoryContextFolder

Although this class is package-private, it extends the public abstract class RelativeDirectoryContextFolder. Clients should retrieve information about a ContentLevelFolder through the methods defined in RelativeDirectoryContextFolder.

A ContentLevelFolder represents a directory (aka package) in the navigator. The contents of the directory are represented by a backing instance of ContentLevel.

Implementation note: this class doesn't actually implement the Folder interface, because there is no API means to add/remove children to/from ContentLevelFolder once its been created. If you have code that expects "instanceof Folder" to work, what you need to do instead is call "mayHaveChildren()" and if that returns true, then the Element serves as a "folder".

Method Summary

void	attach(Observer observer) Registers an observer interested in being notified when the internal state of the class implementing the Subject interface changes.
void	detach(Observer observer) Unregisters an observer that is not interested anymore in being notified when the internal state of the class implementing the Subject interface changes.
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 Elements without having to test the object's type with the instanceof operator or having to downcast to a more specific type.
ContentLevel	getContentLevel()
java.util.List	getContentSetKeys() Returns the keys for the content sets that are represented by this RelativeDirectoryContextFolder.
java.lang.Object	getData() Returns the data object associated with this Element.
javax.swing.Icon	getIcon() Returns an Icon that can be shown in association with this Displayable.
java.lang.String	getLongLabel() Returns a long label that can be displayed to the user.
java.lang.String	getRelativePath() Retrieves the relative path described by this folder.
URLPath	getRootDirectories() Retrieves the root directories used to assemble the folder contents.
java.lang.String	getShortLabel() Returns a short label that can be displayed to the user.
java.lang.String	getToolTipText() Returns the tool tip text to show when the mouse pointer pauses over a UI component that represents this Displayable.
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.
void	notifyObservers(java.lang.Object subject, UpdateMessage change) Notifies all observers that the state of the subject has changed.
java.lang.String	toString() Returns the Short Label displayed to a user.

Methods inherited from class oracle.ide.model.RelativeDirectoryContextFolder

canContainJavaSources

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getRootDirectories

public final URLPath getRootDirectories()

Description copied from class: RelativeDirectoryContextFolder

Retrieves the root directories used to assemble the folder contents.

Specified by:

getRootDirectories in interface RelativeDirectoryElement

Specified by:

getRootDirectories in class RelativeDirectoryContextFolder

Returns:

the URLPath representing the root directories for this folder.

getRelativePath

public final java.lang.String getRelativePath()

Description copied from class: RelativeDirectoryContextFolder

Retrieves the relative path described by this folder.

Specified by:

getRelativePath in interface RelativeDirectoryElement

Specified by:

getRelativePath in class RelativeDirectoryContextFolder

Returns:

a String containing the relative path of this folder.

getContentSetKeys

public java.util.List getContentSetKeys()

Description copied from class: RelativeDirectoryContextFolder

Returns the keys for the content sets that are represented by this RelativeDirectoryContextFolder. The returned List is guaranteed to be non-null.

Specified by:

getContentSetKeys in class RelativeDirectoryContextFolder

Returns:

the ContentSet keys represented by this folder

getContentLevel

public final ContentLevel getContentLevel()

attach

public final void attach(Observer observer)

Description copied from interface: Subject

Registers an observer interested in being notified when the internal state of the class implementing the Subject interface changes. Implementors should do nothing when the same observer is added more than once.

Specified by:

attach in interface Subject

Parameters:

observer - the Observer interested in change notification messages.

detach

public final void detach(Observer observer)

Description copied from interface: Subject

Unregisters an observer that is not interested anymore in being notified when the internal state of the class implementing the Subject interface changes. Implementors should do nothing when the same observer is removed more than once.

Specified by:

detach in interface Subject

Parameters:

observer - the Observer disinterested in change notification messages.

notifyObservers

public final void notifyObservers(java.lang.Object subject,
                                  UpdateMessage change)

Description copied from interface: Subject

Notifies all observers that the state of the subject has changed.

Specified by:

notifyObservers in interface Subject

Parameters:

subject - the subject whose state has changed.

change - what changed.

getData

public final java.lang.Object getData()

Description copied from interface: Element

Returns the data object associated with this Element. Implementations will often simply return this, since the Element is often its own data object. If the implementation returns an object other than this, be sure to set ElementAttributes.DECORATES_DATA_ELEMENT.

Specified by:

getData in interface Element

Returns:

the data object associated with this Element instance.

getShortLabel

public java.lang.String getShortLabel()

Description copied from interface: Displayable

Returns a short label that can be displayed to the user. Generally, the value of the returned String is considered translatable and should therefore be placed in an appropriate resource file. When possible, the returned label should be reasonably short enough to show in the navigator or explorer windows but long enough to clearly identify and distinguish the Displayable.

Specified by:

getShortLabel in interface Displayable

Returns:

a short descriptive label of the Displayable that can be shown to the user.

getLongLabel

public java.lang.String getLongLabel()

Description copied from interface: Displayable

Returns a long label that can be displayed to the user. Generally, the value of the returned String is considered translatable and should therefore be placed in an appropriate resource file. The long label differs from the short label essentially on length. Usually the long label will only be shown on-demand and in places where horizontal space is more available. Examples are the status bar and tooltips.

Specified by:

getLongLabel in interface Displayable

Returns:

a long descriptive label of the Displayable that can be shown to the user.

getIcon

public javax.swing.Icon getIcon()

Description copied from interface: Displayable

Returns an Icon that can be shown in association with this Displayable. Typically the icon will be used in a tree control or list control. Therefore the icon must fit naturally within the space normally given to items within those controls. Such icons are usually 16x16 in size or, if there is a one-pixel transparent padding around the edge, 18x18 in size. It is strongly recommended that icons returned by this method be either 16x16 or 18x18 in size. If null is returned, the control may show a default icon, or it may show no icon, whichever is appropriate.

Specified by:

getIcon in interface Displayable

Returns:

the Icon to be displayed for the Displayable.

getToolTipText

public java.lang.String getToolTipText()

Description copied from interface: Displayable

Returns the tool tip text to show when the mouse pointer pauses over a UI component that represents this Displayable. In many cases it may be appropriate for this method to return the same value as Displayable.getLongLabel().

Specified by:

getToolTipText in interface Displayable

Returns:

the tooltip to show when the mouse pointer pauses over a UI component that represents this Displayable.

toString

public final java.lang.String toString()

Description copied from interface: Displayable

Returns the Short Label displayed to a user. This overrides the toString method in java.lang.Object.

Implementors of the Displayable interface should override this as appropriate. The default implementation is the same as getShortLabel

Specified by:

toString in interface Displayable

Overrides:

toString in class java.lang.Object

See Also:

Object.toString(), Displayable.getShortLabel()

mayHaveChildren

public final boolean mayHaveChildren()

Description copied from interface: Element

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.

Specified by:

mayHaveChildren in interface Element

Returns:

true if this Element may contain child Elements.

getAttributes

public final Attributes getAttributes()

Description copied from interface: Element

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.

Specified by:

getAttributes in interface Element

getChildren

public final java.util.Iterator getChildren()

Description copied from interface: Element

This method is part of the Element interface to provide a convenient way of getting an Iterator over any contained child Elements 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 Elements or null if there are no children.

Specified by:

getChildren in interface Element

Returns:

an Iterator over any child Elements contained by this Element. If there are no children, null is returned.