/*******************************************************************************
* Copyright (c) 2013, 2015 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@googlemail.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.nebula.widgets.nattable.examples._500_Layers._504_Viewport;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.command.AbstractLayerCommandHandler;
import org.eclipse.nebula.widgets.nattable.config.AbstractUiBindingConfiguration;
import org.eclipse.nebula.widgets.nattable.config.DefaultNatTableStyleConfiguration;
import org.eclipse.nebula.widgets.nattable.config.IConfigRegistry;
import org.eclipse.nebula.widgets.nattable.data.ExtendedReflectiveColumnPropertyAccessor;
import org.eclipse.nebula.widgets.nattable.data.IColumnPropertyAccessor;
import org.eclipse.nebula.widgets.nattable.data.IDataProvider;
import org.eclipse.nebula.widgets.nattable.data.ListDataProvider;
import org.eclipse.nebula.widgets.nattable.dataset.person.PersonService;
import org.eclipse.nebula.widgets.nattable.dataset.person.PersonWithAddress;
import org.eclipse.nebula.widgets.nattable.examples.AbstractNatExample;
import org.eclipse.nebula.widgets.nattable.examples.runner.StandaloneNatExampleRunner;
import org.eclipse.nebula.widgets.nattable.grid.data.DefaultColumnHeaderDataProvider;
import org.eclipse.nebula.widgets.nattable.grid.data.DefaultCornerDataProvider;
import org.eclipse.nebula.widgets.nattable.grid.data.DefaultRowHeaderDataProvider;
import org.eclipse.nebula.widgets.nattable.grid.layer.ColumnHeaderLayer;
import org.eclipse.nebula.widgets.nattable.grid.layer.CornerLayer;
import org.eclipse.nebula.widgets.nattable.grid.layer.DefaultColumnHeaderDataLayer;
import org.eclipse.nebula.widgets.nattable.grid.layer.DefaultRowHeaderDataLayer;
import org.eclipse.nebula.widgets.nattable.grid.layer.GridLayer;
import org.eclipse.nebula.widgets.nattable.grid.layer.RowHeaderLayer;
import org.eclipse.nebula.widgets.nattable.hideshow.ColumnHideShowLayer;
import org.eclipse.nebula.widgets.nattable.layer.AbstractLayer;
import org.eclipse.nebula.widgets.nattable.layer.AbstractLayerTransform;
import org.eclipse.nebula.widgets.nattable.layer.CompositeLayer;
import org.eclipse.nebula.widgets.nattable.layer.DataLayer;
import org.eclipse.nebula.widgets.nattable.layer.ILayer;
import org.eclipse.nebula.widgets.nattable.layer.LayerUtil;
import org.eclipse.nebula.widgets.nattable.layer.cell.ILayerCell;
import org.eclipse.nebula.widgets.nattable.painter.IOverlayPainter;
import org.eclipse.nebula.widgets.nattable.painter.cell.ICellPainter;
import org.eclipse.nebula.widgets.nattable.painter.layer.CellLayerPainter;
import org.eclipse.nebula.widgets.nattable.print.command.MultiTurnViewportOffCommandHandler;
import org.eclipse.nebula.widgets.nattable.print.command.MultiTurnViewportOnCommandHandler;
import org.eclipse.nebula.widgets.nattable.reorder.ColumnReorderLayer;
import org.eclipse.nebula.widgets.nattable.reorder.action.ColumnReorderDragMode;
import org.eclipse.nebula.widgets.nattable.reorder.command.ColumnReorderCommand;
import org.eclipse.nebula.widgets.nattable.selection.SelectionLayer;
import org.eclipse.nebula.widgets.nattable.selection.SelectionLayerPainter;
import org.eclipse.nebula.widgets.nattable.ui.action.AggregateDragMode;
import org.eclipse.nebula.widgets.nattable.ui.action.CellDragMode;
import org.eclipse.nebula.widgets.nattable.ui.binding.UiBindingRegistry;
import org.eclipse.nebula.widgets.nattable.ui.matcher.MouseEventMatcher;
import org.eclipse.nebula.widgets.nattable.ui.menu.HeaderMenuConfiguration;
import org.eclipse.nebula.widgets.nattable.util.ClientAreaAdapter;
import org.eclipse.nebula.widgets.nattable.util.GUIHelper;
import org.eclipse.nebula.widgets.nattable.viewport.SliderScroller;
import org.eclipse.nebula.widgets.nattable.viewport.ViewportLayer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Slider;
/**
* Example showing how to implement NatTable that contains two horizontal split
* viewports in a grid.
*/
public class _5044_HorizontalSplitViewportGridExample extends AbstractNatExample {
public static final int SPLIT_COLUMN_INDEX = 5;
public static void main(String[] args) throws Exception {
StandaloneNatExampleRunner.run(600, 400, new _5044_HorizontalSplitViewportGridExample());
}
@Override
public String getDescription() {
return "This example shows a NatTable that contains two separately scrollable "
+ "horzizontal split viewports in a grid.";
}
@Override
public Control createExampleControl(Composite parent) {
// property names of the Person class
String[] propertyNames = { "firstName", "lastName", "gender", "married", "birthday",
"address.street", "address.housenumber", "address.postalCode", "address.city" };
// mapping from property to label, needed for column header labels
Map<String, String> propertyToLabelMap = new HashMap<>();
propertyToLabelMap.put("firstName", "Firstname");
propertyToLabelMap.put("lastName", "Lastname");
propertyToLabelMap.put("gender", "Gender");
propertyToLabelMap.put("married", "Married");
propertyToLabelMap.put("birthday", "Birthday");
propertyToLabelMap.put("address.street", "Street");
propertyToLabelMap.put("address.housenumber", "Housenumber");
propertyToLabelMap.put("address.postalCode", "Postal Code");
propertyToLabelMap.put("address.city", "City");
IColumnPropertyAccessor<PersonWithAddress> columnPropertyAccessor =
new ExtendedReflectiveColumnPropertyAccessor<>(propertyNames);
final BodyLayerStack<PersonWithAddress> bodyLayer = new BodyLayerStack<>(
PersonService.getPersonsWithAddress(50), columnPropertyAccessor);
// build the row header layer
IDataProvider rowHeaderDataProvider = new DefaultRowHeaderDataProvider(
bodyLayer.getBodyDataProvider());
DataLayer rowHeaderDataLayer = new DefaultRowHeaderDataLayer(
rowHeaderDataProvider);
final ILayer rowHeaderLayer = new RowHeaderLayer(rowHeaderDataLayer,
bodyLayer, bodyLayer.getSelectionLayer());
// build the column header layer
IDataProvider columnHeaderDataProvider =
new DefaultColumnHeaderDataProvider(propertyNames, propertyToLabelMap);
final DataLayer columnHeaderDataLayer =
new DefaultColumnHeaderDataLayer(columnHeaderDataProvider);
final AbstractLayer columnHeaderLayer =
new ColumnHeaderLayer(columnHeaderDataLayer, bodyLayer, bodyLayer.getSelectionLayer());
// Use this special layer painter that supports rendering of split
// viewports although the ColumnHeaderLayer is not split. Here is some
// custom calculation included that might not work correctly in case
// there are column groups or other spanning involved.
columnHeaderLayer.setLayerPainter(new CellLayerPainter() {
@Override
protected boolean isClipLeft(int position) {
// check position-1 because of the row header column count
// as the body is a composite layer, the default transformation
// for the grid is not working correctly
int index = LayerUtil.convertColumnPosition(
columnHeaderLayer, position - 1, columnHeaderDataLayer);
return (index > SPLIT_COLUMN_INDEX);
}
@Override
protected void paintCell(ILayerCell cell, GC gc, IConfigRegistry configRegistry) {
ILayer layer = cell.getLayer();
int columnPosition = cell.getColumnPosition();
int rowPosition = cell.getRowPosition();
ICellPainter cellPainter = layer.getCellPainter(
columnPosition, rowPosition, cell, configRegistry);
Rectangle adjustedCellBounds = layer
.getLayerPainter()
.adjustCellBounds(columnPosition, rowPosition, cell.getBounds());
if (cellPainter != null) {
Rectangle originalClipping = gc.getClipping();
int startX = getStartXOfColumnPosition(columnPosition);
int startY = getStartYOfRowPosition(rowPosition);
int endX = getStartXOfColumnPosition(cell.getOriginColumnPosition() + cell.getColumnSpan());
int endY = getStartYOfRowPosition(cell.getOriginRowPosition() + cell.getRowSpan());
// correct position of first column in right region
// find the last visible column in left region
int viewportBorderX = bodyLayer.getViewportLayerLeft().getClientAreaWidth()
+ rowHeaderLayer.getWidth();
if (isClipLeft(columnPosition) && startX < viewportBorderX) {
startX = viewportBorderX;
}
if (!isClipLeft(columnPosition - 1)
&& startX > viewportBorderX) {
startX = viewportBorderX;
}
if (isClipLeft(cell.getOriginColumnPosition() + cell.getColumnSpan())
&& endX < viewportBorderX) {
endX = viewportBorderX;
}
Rectangle cellClipBounds = originalClipping.intersection(
new Rectangle(startX, startY, endX - startX, endY - startY));
gc.setClipping(cellClipBounds.intersection(adjustedCellBounds));
cellPainter.paintCell(cell, gc, adjustedCellBounds, configRegistry);
gc.setClipping(originalClipping);
}
}
});
// build the corner layer
IDataProvider cornerDataProvider =
new DefaultCornerDataProvider(columnHeaderDataProvider, rowHeaderDataProvider);
DataLayer cornerDataLayer =
new DataLayer(cornerDataProvider);
final ILayer cornerLayer =
new CornerLayer(cornerDataLayer, rowHeaderLayer, columnHeaderLayer);
// build the grid layer
GridLayer gridLayer =
new GridLayer(bodyLayer, columnHeaderLayer, rowHeaderLayer, cornerLayer);
// in order to make printing and exporting work correctly you need to
// register the following command handlers
gridLayer.registerCommandHandler(
new MultiTurnViewportOnCommandHandler(
bodyLayer.getViewportLayerLeft(),
bodyLayer.getViewportLayerRight()));
gridLayer.registerCommandHandler(
new MultiTurnViewportOffCommandHandler(
bodyLayer.getViewportLayerLeft(),
bodyLayer.getViewportLayerRight()));
// Wrap NatTable in composite so we can slap on the external horizontal
// sliders
Composite composite = new Composite(parent, SWT.NONE);
GridLayout gridLayout = new GridLayout(1, false);
gridLayout.marginHeight = 0;
gridLayout.marginWidth = 0;
gridLayout.horizontalSpacing = 0;
gridLayout.verticalSpacing = 0;
composite.setLayout(gridLayout);
NatTable natTable = new NatTable(composite, gridLayer, false);
GridData gridData = new GridData();
gridData.horizontalAlignment = GridData.FILL;
gridData.verticalAlignment = GridData.FILL;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;
natTable.setLayoutData(gridData);
createSplitSliders(composite, rowHeaderLayer,
bodyLayer.getViewportLayerLeft(),
bodyLayer.getViewportLayerRight());
// add an IOverlayPainter to ensure the right border of the left
// viewport always
// this is necessary because the left border of layer stacks is not
// rendered by default
natTable.addOverlayPainter(new IOverlayPainter() {
@Override
public void paintOverlay(GC gc, ILayer layer) {
Color beforeColor = gc.getForeground();
gc.setForeground(GUIHelper.COLOR_GRAY);
int viewportBorderX = bodyLayer.getViewportLayerLeft().getWidth()
+ rowHeaderLayer.getWidth() - 1;
gc.drawLine(viewportBorderX, 0, viewportBorderX, layer.getHeight() - 1);
gc.setForeground(beforeColor);
}
});
natTable.addConfiguration(new DefaultNatTableStyleConfiguration());
natTable.addConfiguration(new HeaderMenuConfiguration(natTable));
natTable.configure();
return composite;
}
private void createSplitSliders(
Composite natTableParent, final ILayer rowHeaderLayer,
final ViewportLayer left, final ViewportLayer right) {
Composite sliderComposite = new Composite(natTableParent, SWT.NONE);
GridData gridData = new GridData();
gridData.horizontalAlignment = GridData.FILL;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = false;
gridData.heightHint = 17;
sliderComposite.setLayoutData(gridData);
GridLayout gridLayout = new GridLayout(2, false);
gridLayout.marginHeight = 0;
gridLayout.marginWidth = 0;
gridLayout.horizontalSpacing = 0;
gridLayout.verticalSpacing = 0;
sliderComposite.setLayout(gridLayout);
// Slider Left
// Need a composite here to set preferred size because Slider can't be
// subclassed.
Composite sliderLeftComposite = new Composite(sliderComposite, SWT.NONE) {
@Override
public Point computeSize(int wHint, int hHint, boolean changed) {
int width = ((ClientAreaAdapter) left.getClientAreaProvider()).getWidth();
width += rowHeaderLayer.getWidth();
return new Point(width, 17);
}
};
sliderLeftComposite.setLayout(new FillLayout());
gridData = new GridData();
gridData.horizontalAlignment = GridData.BEGINNING;
gridData.verticalAlignment = GridData.BEGINNING;
sliderLeftComposite.setLayoutData(gridData);
Slider sliderLeft = new Slider(sliderLeftComposite, SWT.HORIZONTAL);
gridData = new GridData();
gridData.horizontalAlignment = GridData.FILL;
gridData.verticalAlignment = GridData.FILL;
sliderLeft.setLayoutData(gridData);
left.setHorizontalScroller(new SliderScroller(sliderLeft));
// Slider Right
Slider sliderRight = new Slider(sliderComposite, SWT.HORIZONTAL);
gridData = new GridData();
gridData.horizontalAlignment = GridData.FILL;
gridData.verticalAlignment = GridData.BEGINNING;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;
sliderRight.setLayoutData(gridData);
right.setHorizontalScroller(new SliderScroller(sliderRight));
}
/**
* The body layer stack that supports column hide/show, column reordering,
* selection and split viewports.
*/
class BodyLayerStack<T> extends AbstractLayerTransform {
private final IDataProvider bodyDataProvider;
private final ColumnHideShowLayer columnHideShowLayer;
private final SelectionLayer selectionLayer;
private final ViewportLayer viewportLayerLeft;
private final ViewportLayer viewportLayerRight;
public BodyLayerStack(List<T> values, IColumnPropertyAccessor<T> columnPropertyAccessor) {
this.bodyDataProvider = new ListDataProvider<>(values, columnPropertyAccessor);
DataLayer bodyDataLayer = new DataLayer(getBodyDataProvider());
// use our custom reorder drag mode configuration instead of the
// default to suppress the ability to move a column from one
// viewport to the other
ColumnReorderLayer columnReorderLayer = new ColumnReorderLayer(bodyDataLayer, false);
columnReorderLayer.addConfiguration(new AbstractUiBindingConfiguration() {
@Override
public void configureUiBindings(UiBindingRegistry uiBindingRegistry) {
uiBindingRegistry.registerMouseDragMode(
MouseEventMatcher.columnHeaderLeftClick(SWT.NONE),
new AggregateDragMode(
new CellDragMode(),
new SplitViewportColumnReorderDragMode()));
}
});
this.columnHideShowLayer = new ColumnHideShowLayer(columnReorderLayer);
this.selectionLayer = new SelectionLayer(this.columnHideShowLayer);
// use a cell layer painter that is configured for left clipping
// this ensures that the rendering works correctly for split
// viewports
this.selectionLayer.setLayerPainter(new SelectionLayerPainter(true, false));
// create a ViewportLayer for the left part of the table and
// configure it to only contain the first 5 columns
this.viewportLayerLeft = new ViewportLayer(this.selectionLayer) {
@Override
public int getMaxColumnPosition() {
return getNumberOfLeftColumns();
}
};
// create a ViewportLayer for the right part of the table and
// configure it to only contain the last 4 columns
this.viewportLayerRight = new ViewportLayer(this.selectionLayer) {
@Override
public int getMinColumnPosition() {
return getNumberOfLeftColumns();
}
};
// as the min column position is calculated dynamically we need to
// set the minimum origin manually
int newMinOriginX = this.selectionLayer.getStartXOfColumnPosition(getNumberOfLeftColumns());
this.viewportLayerRight.setMinimumOriginX(newMinOriginX);
// create a CompositeLayer that contains both ViewportLayers
CompositeLayer compositeLayer = new CompositeLayer(2, 1);
compositeLayer.setChildLayer("REGION_A", getViewportLayerLeft(), 0, 0);
compositeLayer.setChildLayer("REGION_B", getViewportLayerRight(), 1, 0);
// set the width of the left viewport to only showing 2 columns at
// the same time
int leftWidth = bodyDataLayer.getStartXOfColumnPosition(2);
// as the CompositeLayer is setting a IClientAreaProvider for the
// composition
// we need to set a special ClientAreaAdapter after the creation of
// the CompositeLayer to support split viewports
ClientAreaAdapter leftClientAreaAdapter =
new ClientAreaAdapter(getViewportLayerLeft().getClientAreaProvider());
leftClientAreaAdapter.setWidth(leftWidth);
getViewportLayerLeft().setClientAreaProvider(leftClientAreaAdapter);
// register configuration to avoid reordering of columns between the
// split viewports
registerCommandHandler(
new SplitViewportColumnReorderCommandHandler(getViewportLayerLeft()));
setUnderlyingLayer(compositeLayer);
}
/**
* To support hide/show correctly the min/max column positions in the
* split viewports need to be calculated regarding the hide state.
*
* @return The number of visible columns in the left viewport.
*/
private int getNumberOfLeftColumns() {
int fixedColumns = SPLIT_COLUMN_INDEX;
for (int i = 0; i < (SPLIT_COLUMN_INDEX); i++) {
if (this.columnHideShowLayer.isColumnIndexHidden(i)) {
fixedColumns--;
}
}
return fixedColumns;
}
public IDataProvider getBodyDataProvider() {
return this.bodyDataProvider;
}
public SelectionLayer getSelectionLayer() {
return this.selectionLayer;
}
public ViewportLayer getViewportLayerLeft() {
return this.viewportLayerLeft;
}
public ViewportLayer getViewportLayerRight() {
return this.viewportLayerRight;
}
}
/**
* ILayerCommandHandler for ColumnReorderCommands that ensures that no
* reordering can be performed programmatically or via dialog, that would
* reorder columns between the split viewports.
*/
class SplitViewportColumnReorderCommandHandler extends
AbstractLayerCommandHandler<ColumnReorderCommand> {
private ViewportLayer viewportLeft;
public SplitViewportColumnReorderCommandHandler(ViewportLayer viewportLeft) {
this.viewportLeft = viewportLeft;
}
@Override
protected boolean doCommand(ColumnReorderCommand command) {
if ((command.getFromColumnPosition() < this.viewportLeft.getColumnCount()) != (command.getToColumnPosition() < this.viewportLeft.getColumnCount())) {
// Bail out if trying to reorder from region A to B or vice
// versa
return true;
}
return false;
}
@Override
public Class<ColumnReorderCommand> getCommandClass() {
return ColumnReorderCommand.class;
}
}
/**
* Reorder drag mode that avoids reordering between split viewports via
* dragging.
*/
class SplitViewportColumnReorderDragMode extends ColumnReorderDragMode {
@Override
protected boolean isValidTargetColumnPosition(ILayer natLayer,
int dragFromGridColumnPosition, int dragToGridColumnPosition) {
if (((NatTable) natLayer).getCursor() == null) {
int fromColumnIndex = natLayer.getColumnIndexByPosition(dragFromGridColumnPosition);
int toColumnIndex = natLayer.getColumnIndexByPosition(dragToGridColumnPosition);
// ensure that dragging over split viewport borders is not
// allowed
if ((fromColumnIndex < SPLIT_COLUMN_INDEX && toColumnIndex < SPLIT_COLUMN_INDEX)
|| (fromColumnIndex >= (SPLIT_COLUMN_INDEX) && toColumnIndex >= (SPLIT_COLUMN_INDEX))) {
return super.isValidTargetColumnPosition(natLayer,
dragFromGridColumnPosition,
dragToGridColumnPosition);
}
}
return false;
}
}
}