dsto.dfc.swt.viewers
Class CmdMoveItem

java.lang.Object
  dsto.dfc.util.BasicPropertyEventSource
      dsto.dfc.swt.commands.AbstractCommand
          dsto.dfc.swt.viewers.CmdMoveItem

All Implemented Interfaces:

CollectionListener, DfcMonitoredListListener, Command, Copyable, JavaBean, PropertyEventSource, Serializable, Cloneable, EventListener, org.eclipse.jface.viewers.ISelectionChangedListener, org.eclipse.swt.events.DisposeListener, org.eclipse.swt.internal.SWTEventListener

public class CmdMoveItem
extends AbstractCommand
implements org.eclipse.jface.viewers.ISelectionChangedListener, DfcMonitoredListListener, org.eclipse.swt.events.DisposeListener

Generic command to move items up/down in a viewer that is displaying a java.util.List. If the list is a DfcMonitoredList (which supports in-place movement of items) move () is used rather than remove/add.

See Also:

Serialized Form

Field Summary

protected int	direction
static int	DOWN
protected List	items
static int	UP
protected org.eclipse.jface.viewers.Viewer	viewer

Fields inherited from class dsto.dfc.swt.commands.AbstractCommand

NO_ICON

Constructor Summary

CmdMoveItem(org.eclipse.jface.viewers.Viewer viewer, int direction)
Create a new instance.

Method Summary

protected boolean	canMove(List toMove)
void	dispose()
void	elementMoved(CollectionEvent e) Fired when an element in the list has moved (changed indexes).
void	elementsAdded(CollectionEvent e)
void	elementsRemoved(CollectionEvent e)
void	execute() Execute the command.
protected void	inputChanged(List oldInput, List newInput)
protected void	moveItem(int oldIndex, int newIndex)
void	selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent e)
void	setInput(List newItems) Notify the command that the input to the viewer has changed (there is no automatic way to do this).
protected void	updateEnabled() Update the enabled status of the command given the current selected items.
void	widgetDisposed(org.eclipse.swt.events.DisposeEvent e)

Methods inherited from class dsto.dfc.swt.commands.AbstractCommand

addCommandListener, clone, createDefaultDisplayName, fireCommandExecuted, fireCommandExecuted, getAccelerator, getContextMenuGroup, getDescription, getDisplayName, getGroupInView, getIcon, getLogString, getMainMenuGroup, getMnemonic, getName, getToolbarGroup, isEnabled, isInteractive, removeCommandListener, setAccelerator, setContextMenuGroup, setDescription, setDisplayName, setEnabled, setIcon, setInteractive, setMainMenuGroup, setMnemonic, setName, setToolbarGroup

Methods inherited from class dsto.dfc.util.BasicPropertyEventSource

addPropertyChangeListener, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getPropertyChangeSource, removePropertyChangeListener, setPropertyChangeSource

Methods inherited from class java.lang.Object

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

Methods inherited from interface dsto.dfc.util.PropertyEventSource

addPropertyChangeListener, removePropertyChangeListener

Field Detail

UP

public static final int UP

See Also:

Constant Field Values

DOWN

public static final int DOWN

See Also:

Constant Field Values

viewer

protected org.eclipse.jface.viewers.Viewer viewer

items

protected List items

direction

protected int direction

Constructor Detail

CmdMoveItem

public CmdMoveItem(org.eclipse.jface.viewers.Viewer viewer,
                   int direction)

Create a new instance.

Parameters:

viewer - The viewer.

direction - The direction to move the entries (MOVE_UP or MOVE_DOWN).

See Also:

setInput(List)

Method Detail

dispose

public void dispose()

setInput

public void setInput(List newItems)

Notify the command that the input to the viewer has changed (there is no automatic way to do this). If the items list also implements MonitoredCollection it is tracked and the command will be correctly enabled/disabled depending on the current context.

inputChanged

protected void inputChanged(List oldInput,
                            List newInput)

execute

public void execute()

Description copied from interface: Command

Execute the command. Commands should fire CommandListener.commandExecuted(CommandEvent) when executed.

Specified by:

execute in interface Command

Specified by:

execute in class AbstractCommand

moveItem

protected void moveItem(int oldIndex,
                        int newIndex)

updateEnabled

protected void updateEnabled()

Update the enabled status of the command given the current selected items. Default is to be enabled when items is not empty and canMove () is true.

canMove

protected boolean canMove(List toMove)

selectionChanged

public void selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent e)

Specified by:

selectionChanged in interface org.eclipse.jface.viewers.ISelectionChangedListener

elementsAdded

public void elementsAdded(CollectionEvent e)

Specified by:

elementsAdded in interface CollectionListener

elementsRemoved

public void elementsRemoved(CollectionEvent e)

Specified by:

elementsRemoved in interface CollectionListener

elementMoved

public void elementMoved(CollectionEvent e)

Description copied from interface: DfcMonitoredListListener

Fired when an element in the list has moved (changed indexes).

Specified by:

elementMoved in interface DfcMonitoredListListener

Parameters:

e - The move event. startIndex is the element's old index, endIndex is the new index.

widgetDisposed

public void widgetDisposed(org.eclipse.swt.events.DisposeEvent e)

Specified by:

widgetDisposed in interface org.eclipse.swt.events.DisposeListener