org.nakedobjects.viewer.lightweight.view
Class EmptyField

java.lang.Object
  org.nakedobjects.viewer.lightweight.AbstractView
      org.nakedobjects.viewer.lightweight.AbstractObjectView
          org.nakedobjects.viewer.lightweight.view.EmptyField

All Implemented Interfaces:

ClassView, java.lang.Cloneable, DragTarget, InternalView, ObjectView, View

public class EmptyField

extends AbstractObjectView

implements InternalView, DragTarget, ClassView

Field Summary

Fields inherited from class org.nakedobjects.viewer.lightweight.AbstractObjectView

LOG

Fields inherited from class org.nakedobjects.viewer.lightweight.AbstractView

DEBUG, DRAG_HANDLE_WIDTH, HPADDING, ICON_SIZE, VPADDING

Fields inherited from interface org.nakedobjects.viewer.lightweight.InternalView

FIELD, NORMAL

Constructor Summary

EmptyField()

Method Summary

void	dragObjectIn(ObjectDrag drag) Called as an object drag moves into this view
void	draw(Canvas canvas) Called by the frame, or the parent view, when this view must redraw itself.
void	dropObject(ObjectDrag drag) Called when a dragged object is dropped onto this view.
NakedClass	forNakedClass()
int	getBaseline() Returns the postion of the baseline for adjacent label.
Size	getRequiredSize()
boolean	indicatesForView(Location mouseLocation) Determines if the user is invoking an action relating to this view, rather than to whatever this view represents.
protected void	init(NakedObject object)
boolean	isOpen() An empty field is an icon.
boolean	isReplaceable() An empty field should not be replaced by another view.
void	viewMenuOptions(MenuOptionSet options)

Methods inherited from class org.nakedobjects.viewer.lightweight.AbstractObjectView

backgroundColor, clearRootViewIdentified, clone, collectionAddUpdate, collectionRemoveUpdate, createIconImage, debugDetails, dispose, dragCancel, dragging, dragObjectOut, dropView, entered, enteredSubview, exited, exitedSubview, firstClick, getFieldOf, getObject, getRoot, getState, isIdentified, isRoot, makeView, menuOptions, mouseMoved, objectInfo, objectLocatedAt, objectMenuOptions, objectUpdate, parentObjectView, pickupObject, pickupView, removeViewsFor, secondClick, setRootViewIdentified, topView, toString, transparentBackground

Methods inherited from class org.nakedobjects.viewer.lightweight.AbstractView

addControl, assignId, calculateRepaintArea, contains, createCanvas, defaultFieldHeight, getAbsoluteLocation, getBorder, getBounds, getId, getLocation, getName, getPadding, getParent, getSize, getWorkspace, identifyView, invalidateLayout, isLayoutInvalid, layout, limitBounds, print, redraw, removeControl, repaintAll, setBorder, setBounds, setLayoutValid, setLocation, setParent, setSize, setWorkspace, thirdClick, validateLayout

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.nakedobjects.viewer.lightweight.InternalView

getFieldOf, getRoot, parentObjectView, setParent

Methods inherited from interface org.nakedobjects.viewer.lightweight.View

calculateRepaintArea, contains, debugDetails, dispose, entered, enteredSubview, exited, exitedSubview, firstClick, getAbsoluteLocation, getBorder, getBounds, getId, getLocation, getName, getPadding, getParent, getSize, getWorkspace, identifyView, invalidateLayout, isLayoutInvalid, layout, makeView, menuOptions, mouseMoved, print, redraw, secondClick, setBorder, setBounds, setLocation, setSize, thirdClick, validateLayout

Methods inherited from interface org.nakedobjects.viewer.lightweight.DragTarget

dragObjectOut

Constructor Detail

EmptyField

public EmptyField()

Method Detail

getBaseline

public int getBaseline()

Description copied from class: AbstractView

Returns the postion of the baseline for adjacent label. If the label is drawn on this baseline when top of the label rectangle and this view's rectangle are aligned then the label should share the baseline with whatever text is shown within the view.

Specified by:

getBaseline in interface View

Overrides:

getBaseline in class AbstractView

Returns:

int the baseline to draw the label at.

See Also:

View#getBaseline()

isOpen

public boolean isOpen()

An empty field is an icon.

Specified by:

isOpen in interface View

Overrides:

isOpen in class AbstractView

isReplaceable

public boolean isReplaceable()

An empty field should not be replaced by another view.

Specified by:

isReplaceable in interface View

Overrides:

isReplaceable in class AbstractView

getRequiredSize

public Size getRequiredSize()

Specified by:

getRequiredSize in interface View

Overrides:

getRequiredSize in class AbstractObjectView

dragObjectIn

public void dragObjectIn(ObjectDrag drag)

Description copied from interface: DragTarget

Called as an object drag moves into this view

Specified by:

dragObjectIn in interface DragTarget

Overrides:

dragObjectIn in class AbstractObjectView

dropObject

public void dropObject(ObjectDrag drag)

Description copied from interface: DragTarget

Called when a dragged object is dropped onto this view.

Specified by:

dropObject in interface DragTarget

Overrides:

dropObject in class AbstractObjectView

forNakedClass

public NakedClass forNakedClass()

Specified by:

forNakedClass in interface ClassView

init

protected void init(NakedObject object)

Overrides:

init in class AbstractObjectView

indicatesForView

public boolean indicatesForView(Location mouseLocation)

Description copied from interface: View

Determines if the user is invoking an action relating to this view, rather than to whatever this view represents.

Specified by:

indicatesForView in interface View

Overrides:

indicatesForView in class AbstractView

draw

public void draw(Canvas canvas)

Description copied from interface: View

Called by the frame, or the parent view, when this view must redraw itself.

Specified by:

draw in interface View

Overrides:

draw in class AbstractObjectView

viewMenuOptions

public void viewMenuOptions(MenuOptionSet options)

Specified by:

viewMenuOptions in interface ObjectView

Overrides:

viewMenuOptions in class AbstractObjectView