/*******************************************************************************
* Copyright (c) 2013 Dirk Fauth and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Dirk Fauth <dirk.fauth@gmail.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.nebula.widgets.nattable.layer.event;
import org.eclipse.nebula.widgets.nattable.grid.layer.DimensionallyDependentLayer;
import org.eclipse.nebula.widgets.nattable.layer.ILayer;
/**
* Specialization of the CellVisualChangeEvent. The only difference is the
* handling of this type of event in the NatTable event handling. While the
* CellVisualChangeEvent causes a whole redraw operation of the visible part
* (which is necessary to update everything if a data value has change, for
* example important for conditional styling), this event only forces to redraw
* the specified cell itself. This is for example necessary for hover styling,
* where redrawing everything is not necessary and would cause lags in applying
* hover styling.
*
* @author Dirk Fauth
*
*/
public class CellVisualUpdateEvent extends CellVisualChangeEvent {
/**
* Create a new CellVisualUpdateEvent based on the given information.
*
* @param layer
* The layer to which the given column and row position belong.
* @param columnPosition
* The column position of the cell that needs to be redrawn.
* @param rowPosition
* The row position of the cell that needs to be redrawn.
*/
public CellVisualUpdateEvent(ILayer layer, int columnPosition,
int rowPosition) {
super(layer, columnPosition, rowPosition);
}
/**
* Create a new CellVisualUpdateEvent out of the given event. Used
* internally for cloning purposes.
*
* @param event
* The event to create the clone from.
*/
protected CellVisualUpdateEvent(CellVisualChangeEvent event) {
super(event);
}
@Override
public CellVisualUpdateEvent cloneEvent() {
return new CellVisualUpdateEvent(this);
}
@Override
public boolean convertToLocal(ILayer localLayer) {
if (!(localLayer instanceof DimensionallyDependentLayer)) {
this.columnPosition = localLayer.underlyingToLocalColumnPosition(
getLayer(), this.columnPosition);
this.rowPosition = localLayer.underlyingToLocalRowPosition(getLayer(),
this.rowPosition);
}
this.layer = localLayer;
return this.columnPosition >= 0 && this.rowPosition >= 0
&& this.columnPosition < this.layer.getColumnCount()
&& this.rowPosition < this.layer.getRowCount();
}
}