org.nakedobjects.plugins.dnd.viewer.tree
Class EmptyNodeSpecification

java.lang.Object
  org.nakedobjects.plugins.dnd.viewer.tree.EmptyNodeSpecification

All Implemented Interfaces:

ViewSpecification

public class EmptyNodeSpecification
extends java.lang.Object

A simple specification that always returns false when asked if it can display any content.

See Also:

canDisplay(Content, ViewRequirement)

Field Summary

static int	CAN_OPEN
static int	CANT_OPEN
static int	UNKNOWN

Constructor Summary

EmptyNodeSpecification()

Method Summary

boolean	canDisplay(Content content, ViewRequirement requirement) Determines if the view created to this specification can display the specified type.
int	canOpen(Content content)
protected View	createNodeView(Content content, ViewAxis axis)
View	createView(Content content, ViewAxis axis) Create a new view to this specification for the specified context, and using the specified axis if specified (which can be null).
java.lang.String	getName()
boolean	isAligned() Return true if the generated views are to have their sizes adjusted so they are consistent with surrounding views.
boolean	isOpen() Indicates whether views to this specification are open - displaying the attributes of the content object - or are closed - display only the title of the content object.
boolean	isReplaceable() Indicates whether this view can be replaced with another view (for the same value or reference).
boolean	isResizeable() Indicates if this view can handled being resized.
boolean	isSubView()

Methods inherited from class java.lang.Object

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

Field Detail

CAN_OPEN

public static final int CAN_OPEN

See Also:

Constant Field Values

CANT_OPEN

public static final int CANT_OPEN

See Also:

Constant Field Values

UNKNOWN

public static final int UNKNOWN

See Also:

Constant Field Values

Constructor Detail

EmptyNodeSpecification

public EmptyNodeSpecification()

Method Detail

canOpen

public int canOpen(Content content)

createNodeView

protected View createNodeView(Content content,
                              ViewAxis axis)

canDisplay

public boolean canDisplay(Content content,
                          ViewRequirement requirement)

Description copied from interface: ViewSpecification

Determines if the view created to this specification can display the specified type. Returns true if it can.

getName

public java.lang.String getName()

createView

public final View createView(Content content,
                             ViewAxis axis)

Description copied from interface: ViewSpecification

Create a new view to this specification for the specified context, and using the specified axis if specified (which can be null).

Specified by:

createView in interface ViewSpecification

isAligned

public boolean isAligned()

Description copied from interface: ViewSpecification

Return true if the generated views are to have their sizes adjusted so they are consistent with surrounding views.

Specified by:

isAligned in interface ViewSpecification

isOpen

public boolean isOpen()

Description copied from interface: ViewSpecification

Indicates whether views to this specification are open - displaying the attributes of the content object - or are closed - display only the title of the content object.

Specified by:

isOpen in interface ViewSpecification

isReplaceable

public boolean isReplaceable()

Description copied from interface: ViewSpecification

Indicates whether this view can be replaced with another view (for the same value or reference).

Specified by:

isReplaceable in interface ViewSpecification

Returns:

true if it can be replaced by another view; false if it can't be replaces

isResizeable

public boolean isResizeable()

Description copied from interface: ViewSpecification

Indicates if this view can handled being resized. If it can't then the viewer can put it in a scroll border.

Specified by:

isResizeable in interface ViewSpecification

isSubView

public boolean isSubView()

Specified by:

isSubView in interface ViewSpecification