Examples of org.eclipse.nebula.widgets.nattable.layer.event.CellVisualUpdateEvent

org.eclipse.nebula.widgets.nattable.layer.event.CellVisualUpdateEvent

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

        for (ILayerListener layerListener : this.listeners) {
            layerListener.handleLayerEvent(event);
        }


        if (event instanceof CellVisualUpdateEvent) {
            CellVisualUpdateEvent update = (CellVisualUpdateEvent) event;
            repaintCell(update.getColumnPosition(), update.getRowPosition());
            return;
        }


        if (event instanceof ColumnVisualUpdateEvent) {
            ColumnVisualUpdateEvent update = (ColumnVisualUpdateEvent) event;
            // if more than one column has changed repaint the whole table
            Collection<Range> ranges = update.getColumnPositionRanges();
            if (ranges.size() == 1) {
                Range range = ranges.iterator().next();
                if (range.end - range.start == 1) {
                    repaintColumn(range.start);
                    return;
                }
            }
        }


        if (event instanceof RowVisualUpdateEvent) {
            RowVisualUpdateEvent update = (RowVisualUpdateEvent) event;
            // if more than one row has changed repaint the whole table
            Collection<Range> ranges = update.getRowPositionRanges();
            if (ranges.size() == 1) {
                Range range = ranges.iterator().next();
                if (range.end - range.start == 1) {
                    repaintRow(range.start);
                    return;

            Point oldHover = this.currentHoveredCellPosition;


            this.currentHoveredCellPosition = cellPosition;


            if (oldHover != null) {
                fireLayerEvent(new CellVisualUpdateEvent(this, oldHover.x,
                        oldHover.y));
            }
            fireLayerEvent(new CellVisualUpdateEvent(this,
                    this.currentHoveredCellPosition.x,
                    this.currentHoveredCellPosition.y));
        }
    }

     */
    public void clearCurrentHoveredCellPosition() {
        if (this.currentHoveredCellPosition != null) {
            Point oldHover = this.currentHoveredCellPosition;
            this.currentHoveredCellPosition = null;
            fireLayerEvent(new CellVisualUpdateEvent(this, oldHover.x,
                    oldHover.y));
        }
    }

Related Classes of org.eclipse.nebula.widgets.nattable.layer.event.CellVisualUpdateEvent

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