com.alee.managers.drag

Class SimpleDragViewHandler<T>

java.lang.Object

com.alee.managers.drag.SimpleDragViewHandler<T>

All Implemented Interfaces:

DragViewHandler<T>

Direct Known Subclasses:

DocumentDragViewHandler

public abstract class SimpleDragViewHandler<T>
extends java.lang.Object
implements DragViewHandler<T>

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.awt.Insets	margin Document description margin.
protected static int	textSideSpacing Additional spacing at text sides.

Constructor Summary

Constructors

Constructor and Description
SimpleDragViewHandler()

Method Summary

Modifier and Type	Method and Description
void	dragEnded(T object, java.awt.dnd.DragSourceDropEvent event) Notifies about drag operation end.
protected java.awt.FontMetrics	getFontMetrics(T object) Returns font metrics used to display text.
protected abstract java.awt.Color	getForeground(T object) Returns displayed text foreground.
protected abstract javax.swing.Icon	getIcon(T object) Returns displayed icon.
protected abstract java.lang.String	getText(T object) Returns displayed text.
java.awt.image.BufferedImage	getView(T object, java.awt.dnd.DragSourceDragEvent event) Returns image object representation.
java.awt.Point	getViewRelativeLocation(T document, java.awt.dnd.DragSourceDragEvent event) Returns image object representation location relative to mouse location.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.alee.managers.drag.DragViewHandler

getObjectFlavor

Field Detail

margin

protected static final java.awt.Insets margin

Document description margin.

textSideSpacing

protected static final int textSideSpacing

Additional spacing at text sides.

See Also:

Constant Field Values

Constructor Detail

SimpleDragViewHandler

public SimpleDragViewHandler()

Method Detail

getFontMetrics

protected java.awt.FontMetrics getFontMetrics(T object)

Returns font metrics used to display text.

Parameters:

object - dragged object

Returns:

font metrics used to display text

getIcon

protected abstract javax.swing.Icon getIcon(T object)

Returns displayed icon.

Parameters:

object - dragged object

Returns:

displayed icon

getForeground

protected abstract java.awt.Color getForeground(T object)

Returns displayed text foreground.

Parameters:

object - dragged object

Returns:

displayed text foreground

getText

protected abstract java.lang.String getText(T object)

Returns displayed text.

Parameters:

object - dragged object

Returns:

displayed text

getView

public java.awt.image.BufferedImage getView(T object,
                                            java.awt.dnd.DragSourceDragEvent event)

Description copied from interface: DragViewHandler

Returns image object representation. This method is called once per drag operation to initialize dragged object view.

Specified by:

getView in interface DragViewHandler<T>

Parameters:

object - object to create image representation for

event - drag source drag event

Returns:

image object representation

getViewRelativeLocation

public java.awt.Point getViewRelativeLocation(T document,
                                              java.awt.dnd.DragSourceDragEvent event)

Description copied from interface: DragViewHandler

Returns image object representation location relative to mouse location. This method is called each time image location should be updated.

Specified by:

getViewRelativeLocation in interface DragViewHandler<T>

Parameters:

document - object return image representation location for

event - drag source drag event

Returns:

image object representation location relative to mouse location

dragEnded

public void dragEnded(T object,
                      java.awt.dnd.DragSourceDropEvent event)

Description copied from interface: DragViewHandler

Notifies about drag operation end. This method is called once per drag operation.

Specified by:

dragEnded in interface DragViewHandler<T>

Parameters:

object - dragged object

event - drag source drop event