net.sf.mmm.client.ui.impl.gwt.widget.complex.adapter

Class UiWidgetAdapterGwtTableColumn.ReorderHandler

java.lang.Object

net.sf.mmm.client.ui.gwt.widgets.handler.AbstractDragAndDropHandler

net.sf.mmm.client.ui.impl.gwt.widget.complex.adapter.UiWidgetAdapterGwtTableColumn.ReorderHandler

All Implemented Interfaces:

com.google.gwt.event.dom.client.DragEndHandler, com.google.gwt.event.dom.client.DragOverHandler, com.google.gwt.event.dom.client.DragStartHandler, com.google.gwt.event.dom.client.DropHandler, com.google.gwt.event.shared.EventHandler, AbstractCustomHandler

Enclosing class:

UiWidgetAdapterGwtTableColumn

private class UiWidgetAdapterGwtTableColumn.ReorderHandler
extends AbstractDragAndDropHandler

Handler for the reorder behavior of this column.

Field Summary

Fields

Modifier and Type	Field and Description
private static String	DATA_FORMAT The data format used to store the drag information in DND events.

Constructor Summary

Constructors

Constructor and Description
ReorderHandler() The constructor.

Method Summary

Modifier and Type	Method and Description
protected boolean	isActive() This method can be overridden for dynamic activation of this handler.
void	onDragEnd(com.google.gwt.event.dom.client.DragEndEvent event)
void	onDragOver(com.google.gwt.event.dom.client.DragOverEvent event) ATTENTION: This method is invoked on the listener registered on the widget that is currently under the dragged item and NOT on the widget that is actually dragged around.
void	onDrop(com.google.gwt.event.dom.client.DropEvent event)
private void	updateDragOver(AbstractUiWidgetTableColumn<?,?,?> dragOverColumn, boolean addStyle) Updates the style of the given dragOverColumn.

Methods inherited from class net.sf.mmm.client.ui.gwt.widgets.handler.AbstractDragAndDropHandler

getWidget, onDragStart, register

Methods inherited from class java.lang.Object

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

Field Detail

DATA_FORMAT

private static final String DATA_FORMAT

The data format used to store the drag information in DND events.

See Also:

Constant Field Values

Constructor Detail

ReorderHandler

public ReorderHandler()

The constructor.

Method Detail

isActive

protected boolean isActive()

This method can be overridden for dynamic activation of this handler.

Overrides:

isActive in class AbstractDragAndDropHandler

Returns:

true if this handler is active, false if it is inactive (ignores all events and does nothing).

onDrop

public void onDrop(com.google.gwt.event.dom.client.DropEvent event)

Specified by:

onDrop in interface com.google.gwt.event.dom.client.DropHandler

Overrides:

onDrop in class AbstractDragAndDropHandler

onDragOver

public void onDragOver(com.google.gwt.event.dom.client.DragOverEvent event)

ATTENTION:
This method is invoked on the listener registered on the widget that is currently under the dragged item and NOT on the widget that is actually dragged around.

Specified by:

onDragOver in interface com.google.gwt.event.dom.client.DragOverHandler

Overrides:

onDragOver in class AbstractDragAndDropHandler

updateDragOver

private void updateDragOver(AbstractUiWidgetTableColumn<?,?,?> dragOverColumn,
                            boolean addStyle)

Updates the style of the given dragOverColumn.

Parameters:

dragOverColumn - is the AbstractUiWidgetTableColumn that is dragged over and shall be updated.

addStyle - - true to add drag over style, false to remove.

onDragEnd

public void onDragEnd(com.google.gwt.event.dom.client.DragEndEvent event)