/*******************************************************************************
* Copyright (c) 2013, 2014, 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
* Roman Flueckiger <roman.flueckiger@mac.com> - added expand/collapse key bindings
*******************************************************************************/
package org.eclipse.nebula.widgets.nattable.examples._600_GlazedLists._604_Tree;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.config.AbstractRegistryConfiguration;
import org.eclipse.nebula.widgets.nattable.config.CellConfigAttributes;
import org.eclipse.nebula.widgets.nattable.config.ConfigRegistry;
import org.eclipse.nebula.widgets.nattable.config.DefaultNatTableStyleConfiguration;
import org.eclipse.nebula.widgets.nattable.config.IConfigRegistry;
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.data.ReflectiveColumnPropertyAccessor;
import org.eclipse.nebula.widgets.nattable.data.convert.DefaultDateDisplayConverter;
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.extension.glazedlists.GlazedListsEventLayer;
import org.eclipse.nebula.widgets.nattable.extension.glazedlists.tree.GlazedListTreeData;
import org.eclipse.nebula.widgets.nattable.extension.glazedlists.tree.GlazedListTreeRowModel;
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.layer.AbstractLayerTransform;
import org.eclipse.nebula.widgets.nattable.layer.DataLayer;
import org.eclipse.nebula.widgets.nattable.layer.ILayer;
import org.eclipse.nebula.widgets.nattable.layer.cell.ColumnLabelAccumulator;
import org.eclipse.nebula.widgets.nattable.painter.cell.CheckBoxPainter;
import org.eclipse.nebula.widgets.nattable.selection.SelectionLayer;
import org.eclipse.nebula.widgets.nattable.style.DisplayMode;
import org.eclipse.nebula.widgets.nattable.tree.ITreeRowModel;
import org.eclipse.nebula.widgets.nattable.tree.TreeLayer;
import org.eclipse.nebula.widgets.nattable.tree.command.TreeCollapseAllCommand;
import org.eclipse.nebula.widgets.nattable.tree.command.TreeExpandAllCommand;
import org.eclipse.nebula.widgets.nattable.tree.config.TreeLayerExpandCollapseKeyBindings;
import org.eclipse.nebula.widgets.nattable.viewport.ViewportLayer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import ca.odell.glazedlists.EventList;
import ca.odell.glazedlists.GlazedLists;
import ca.odell.glazedlists.SortedList;
import ca.odell.glazedlists.TransformedList;
import ca.odell.glazedlists.TreeList;
/**
* Simple example showing how to create a tree within a grid.
*/
public class _6041_TreeGridExample extends AbstractNatExample {
public static void main(String[] args) throws Exception {
StandaloneNatExampleRunner.run(new _6041_TreeGridExample());
}
@Override
public String getDescription() {
return "This example shows how to create a tree within a grid."
+ " It will use a child as the parent node for tree structuring.";
}
@Override
public Control createExampleControl(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
container.setLayout(new GridLayout());
// create a new ConfigRegistry which will be needed for GlazedLists
// handling
ConfigRegistry configRegistry = new ConfigRegistry();
// property names of the Person class
String[] propertyNames = { "lastName", "firstName", "gender", "married", "birthday" };
// mapping from property to label, needed for column header labels
Map<String, String> propertyToLabelMap = new HashMap<>();
propertyToLabelMap.put("lastName", "Lastname");
propertyToLabelMap.put("firstName", "Firstname");
propertyToLabelMap.put("gender", "Gender");
propertyToLabelMap.put("married", "Married");
propertyToLabelMap.put("birthday", "Birthday");
IColumnPropertyAccessor<PersonWithAddress> columnPropertyAccessor =
new ReflectiveColumnPropertyAccessor<>(propertyNames);
final BodyLayerStack<PersonWithAddress> bodyLayerStack =
new BodyLayerStack<>(
PersonService.getPersonsWithAddress(50),
columnPropertyAccessor, new PersonWithAddressTreeFormat());
// build the column header layer
IDataProvider columnHeaderDataProvider =
new DefaultColumnHeaderDataProvider(propertyNames, propertyToLabelMap);
DataLayer columnHeaderDataLayer =
new DefaultColumnHeaderDataLayer(columnHeaderDataProvider);
ILayer columnHeaderLayer =
new ColumnHeaderLayer(columnHeaderDataLayer, bodyLayerStack, bodyLayerStack.getSelectionLayer());
// build the row header layer
IDataProvider rowHeaderDataProvider =
new DefaultRowHeaderDataProvider(bodyLayerStack.getBodyDataProvider());
DataLayer rowHeaderDataLayer =
new DefaultRowHeaderDataLayer(rowHeaderDataProvider);
ILayer rowHeaderLayer =
new RowHeaderLayer(rowHeaderDataLayer, bodyLayerStack, bodyLayerStack.getSelectionLayer());
// build the corner layer
IDataProvider cornerDataProvider =
new DefaultCornerDataProvider(columnHeaderDataProvider, rowHeaderDataProvider);
DataLayer cornerDataLayer =
new DataLayer(cornerDataProvider);
ILayer cornerLayer =
new CornerLayer(cornerDataLayer, rowHeaderLayer, columnHeaderLayer);
// build the grid layer
GridLayer gridLayer =
new GridLayer(bodyLayerStack, columnHeaderLayer, rowHeaderLayer, cornerLayer);
// turn the auto configuration off as we want to add our header menu
// configuration
final NatTable natTable = new NatTable(container, gridLayer, false);
// as the autoconfiguration of the NatTable is turned off, we have to
// add the DefaultNatTableStyleConfiguration and the ConfigRegistry
// manually
natTable.setConfigRegistry(configRegistry);
natTable.addConfiguration(new DefaultNatTableStyleConfiguration());
natTable.addConfiguration(new AbstractRegistryConfiguration() {
@Override
public void configureRegistry(IConfigRegistry configRegistry) {
// register a CheckBoxPainter as CellPainter for the married
// information
configRegistry.registerConfigAttribute(
CellConfigAttributes.CELL_PAINTER,
new CheckBoxPainter(),
DisplayMode.NORMAL,
ColumnLabelAccumulator.COLUMN_LABEL_PREFIX + 3);
configRegistry.registerConfigAttribute(
CellConfigAttributes.DISPLAY_CONVERTER,
new DefaultDateDisplayConverter("MM/dd/yyyy"),
DisplayMode.NORMAL,
ColumnLabelAccumulator.COLUMN_LABEL_PREFIX + 4);
}
});
// adds the key bindings that allows pressing space bar to
// expand/collapse tree nodes
natTable.addConfiguration(
new TreeLayerExpandCollapseKeyBindings(
bodyLayerStack.getTreeLayer(),
bodyLayerStack.getSelectionLayer()));
natTable.configure();
GridDataFactory.fillDefaults().grab(true, true).applyTo(natTable);
Composite buttonPanel = new Composite(container, SWT.NONE);
buttonPanel.setLayout(new RowLayout());
GridDataFactory.fillDefaults().grab(true, false).applyTo(buttonPanel);
Button collapseAllButton = new Button(buttonPanel, SWT.PUSH);
collapseAllButton.setText("Collapse All");
collapseAllButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
natTable.doCommand(new TreeCollapseAllCommand());
}
});
Button expandAllButton = new Button(buttonPanel, SWT.PUSH);
expandAllButton.setText("Expand All");
expandAllButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
natTable.doCommand(new TreeExpandAllCommand());
}
});
return container;
}
/**
* Always encapsulate the body layer stack in an AbstractLayerTransform to
* ensure that the index transformations are performed in later commands.
*
* @param <T>
*/
class BodyLayerStack<T> extends AbstractLayerTransform {
private final TreeList<T> treeList;
private final IDataProvider bodyDataProvider;
private final SelectionLayer selectionLayer;
private final TreeLayer treeLayer;
@SuppressWarnings("unchecked")
public BodyLayerStack(List<T> values,
IColumnPropertyAccessor<T> columnPropertyAccessor,
TreeList.Format<T> treeFormat) {
// wrapping of the list to show into GlazedLists
// see http://publicobject.com/glazedlists/ for further information
EventList<T> eventList = GlazedLists.eventList(values);
TransformedList<T, T> rowObjectsGlazedList = GlazedLists.threadSafeList(eventList);
// use the SortedList constructor with 'null' for the Comparator
// because the Comparator will be set by configuration
SortedList<T> sortedList = new SortedList<>(rowObjectsGlazedList, null);
// wrap the SortedList with the TreeList
this.treeList = new TreeList<T>(sortedList, treeFormat, TreeList.NODES_START_EXPANDED);
this.bodyDataProvider = new ListDataProvider<>(this.treeList, columnPropertyAccessor);
DataLayer bodyDataLayer = new DataLayer(this.bodyDataProvider);
// simply apply labels for every column by index
bodyDataLayer.setConfigLabelAccumulator(new ColumnLabelAccumulator());
// layer for event handling of GlazedLists and PropertyChanges
GlazedListsEventLayer<T> glazedListsEventLayer = new GlazedListsEventLayer<>(bodyDataLayer, this.treeList);
GlazedListTreeData<T> treeData = new GlazedListTreeData<>(this.treeList);
ITreeRowModel<T> treeRowModel = new GlazedListTreeRowModel<>(treeData);
this.selectionLayer = new SelectionLayer(glazedListsEventLayer);
this.treeLayer = new TreeLayer(this.selectionLayer, treeRowModel);
ViewportLayer viewportLayer = new ViewportLayer(this.treeLayer);
setUnderlyingLayer(viewportLayer);
}
public SelectionLayer getSelectionLayer() {
return this.selectionLayer;
}
public TreeLayer getTreeLayer() {
return this.treeLayer;
}
public TreeList<T> getTreeList() {
return this.treeList;
}
public IDataProvider getBodyDataProvider() {
return this.bodyDataProvider;
}
}
/**
* Simple TreeList.Format implementation that uses the lastname of the
* PersonWithAddress object as tree item.
* <p>
* Using a String directly as the tree item has the possible disadvantage of
* haven non-unique items in the tree within subtrees.
*/
private class PersonWithAddressTreeFormat implements TreeList.Format<PersonWithAddress> {
private Map<String, PersonWithAddress> parentMapping = new HashMap<>();
/**
* Populate path with a list describing the path from a root node to
* this element. Upon returning, the list must have size >= 1, where the
* provided element identical to the list's last element. This
* implementation will use the first object found for a last name as
* root node by storing it within a map. If there is already an object
* stored for the lastname of the given element, it will be used as root
* for the path.
*/
@Override
public void getPath(List<PersonWithAddress> path, PersonWithAddress element) {
if (this.parentMapping.get(element.getLastName()) != null) {
path.add(this.parentMapping.get(element.getLastName()));
} else {
this.parentMapping.put(element.getLastName(), element);
}
path.add(element);
}
/**
* Simply always return <code>true</code>.
*
* @return <code>true</code> if this element can have child elements, or
* <code>false</code> if it is always a leaf node.
*/
@Override
public boolean allowsChildren(PersonWithAddress element) {
return true;
}
/**
* Returns the comparator used to order path elements of the specified
* depth. If enforcing order at this level is not intended, this method
* should return <code>null</code>. We do a simple sorting of the last
* names of the persons to show so the tree nodes are sorted in
* alphabetical order.
*/
@Override
public Comparator<? super PersonWithAddress> getComparator(int depth) {
return new Comparator<PersonWithAddress>() {
@Override
public int compare(PersonWithAddress o1, PersonWithAddress o2) {
return o1.getLastName().compareTo(o2.getLastName());
}
};
}
}
}