/*******************************************************************************
 * Copyright (c) 2013, 2020 Dirk Fauth and others.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *    Dirk Fauth <dirk.fauth@googlemail.com> - initial API and implementation
 *******************************************************************************/
package org.eclipse.nebula.widgets.nattable.examples._500_Layers._507_HideShow;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.config.DefaultNatTableStyleConfiguration;
import org.eclipse.nebula.widgets.nattable.data.IDataProvider;
import org.eclipse.nebula.widgets.nattable.dataset.person.PersonService;
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.DefaultBodyDataProvider;
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.hideshow.RowHideShowLayer;
import org.eclipse.nebula.widgets.nattable.hideshow.indicator.HideIndicatorMenuConfiguration;
import org.eclipse.nebula.widgets.nattable.hideshow.indicator.HideIndicatorOverlayPainter;
import org.eclipse.nebula.widgets.nattable.layer.DataLayer;
import org.eclipse.nebula.widgets.nattable.layer.ILayer;
import org.eclipse.nebula.widgets.nattable.persistence.command.DisplayPersistenceDialogCommandHandler;
import org.eclipse.nebula.widgets.nattable.selection.SelectionLayer;
import org.eclipse.nebula.widgets.nattable.ui.menu.AbstractHeaderMenuConfiguration;
import org.eclipse.nebula.widgets.nattable.ui.menu.PopupMenuBuilder;
import org.eclipse.nebula.widgets.nattable.viewport.ViewportLayer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

/**
 * Simple example showing how to add the {@link ColumnHideShowLayer} and the
 * {@link RowHideShowLayer} to the layer composition of a grid and how to add
 * the corresponding actions to the header menus.
 *
 * Also adds the functionality to manage NatTable states to proof that the
 * visibility states are stored and loaded correctly.
 */
public class _5073_ColumnAndRowHideShowExample extends AbstractNatExample {

    public static void main(String[] args) throws Exception {
        StandaloneNatExampleRunner.run(new _5073_ColumnAndRowHideShowExample());
    }

    @Override
    public String getDescription() {
        return "This example shows the usage of the ColumnHideShowLayer and the RowHideShowLayer "
                + "within a grid and its corresponding actions in the header menus. If you perform "
                + "a right click on the corresponding header, you are able to hide the current "
                + "selection or show all columns/rows again.\n"
                + "The column header menu also gives the opportunity to manage the NatTable states";
    }

    @Override
    public Control createExampleControl(Composite parent) {
        Composite panel = new Composite(parent, SWT.NONE);

        // property names of the Person class
        String[] propertyNames = {
                "firstName",
                "lastName",
                "gender",
                "married",
                "birthday" };

        // 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");

        // build the body layer stack
        // Usually you would create a new layer stack by extending
        // AbstractIndexLayerTransform and setting the ViewportLayer as
        // underlying layer. But in this case using the ViewportLayer directly
        // as body layer is also working.
        IDataProvider bodyDataProvider =
                new DefaultBodyDataProvider<>(PersonService.getPersons(10), propertyNames);
        DataLayer bodyDataLayer =
                new DataLayer(bodyDataProvider);
        ColumnHideShowLayer columnHideShowLayer =
                new ColumnHideShowLayer(bodyDataLayer);
        RowHideShowLayer rowHideShowLayer =
                new RowHideShowLayer(columnHideShowLayer);
        final SelectionLayer selectionLayer =
                new SelectionLayer(rowHideShowLayer);
        final ViewportLayer viewportLayer =
                new ViewportLayer(selectionLayer);

        // build the column header layer
        IDataProvider columnHeaderDataProvider =
                new DefaultColumnHeaderDataProvider(propertyNames, propertyToLabelMap);
        DataLayer columnHeaderDataLayer =
                new DefaultColumnHeaderDataLayer(columnHeaderDataProvider);
        ILayer columnHeaderLayer =
                new ColumnHeaderLayer(columnHeaderDataLayer, viewportLayer, selectionLayer);

        // build the row header layer
        IDataProvider rowHeaderDataProvider =
                new DefaultRowHeaderDataProvider(bodyDataProvider);
        DataLayer rowHeaderDataLayer =
                new DefaultRowHeaderDataLayer(rowHeaderDataProvider);
        ILayer rowHeaderLayer =
                new RowHeaderLayer(rowHeaderDataLayer, viewportLayer, selectionLayer);

        // 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(viewportLayer, columnHeaderLayer, rowHeaderLayer, cornerLayer);

        // turn the auto configuration off as we want to add our header menu
        // configuration
        final NatTable natTable = new NatTable(panel, gridLayer, false);

        // as the autoconfiguration of the NatTable is turned off, we have to
        // add the DefaultNatTableStyleConfiguration manually
        natTable.addConfiguration(new DefaultNatTableStyleConfiguration());

        // add the optional rendering indicator for the hidden columns and rows
        HideIndicatorOverlayPainter overlayPainter =
                new HideIndicatorOverlayPainter(columnHeaderLayer, rowHeaderLayer);
        natTable.addOverlayPainter(overlayPainter);

        // add a menu configuration that attaches menus to the hidden row and
        // column
        // indicator
        natTable.addConfiguration(new HideIndicatorMenuConfiguration(natTable, columnHeaderLayer, rowHeaderLayer));

        // add the header menu configuration for adding the column header menu
        // with hide/show actions
        natTable.addConfiguration(new AbstractHeaderMenuConfiguration(natTable) {

            @Override
            protected PopupMenuBuilder createColumnHeaderMenu(NatTable natTable) {
                return super.createColumnHeaderMenu(natTable)
                        .withHideColumnMenuItem()
                        .withShowAllColumnsMenuItem()
                        .withStateManagerMenuItemProvider();
            }

            @Override
            protected PopupMenuBuilder createRowHeaderMenu(NatTable natTable) {
                return super.createRowHeaderMenu(natTable)
                        .withHideRowMenuItem()
                        .withShowAllRowsMenuItem()
                        .withStateManagerMenuItemProvider();
            }

            @Override
            protected PopupMenuBuilder createCornerMenu(NatTable natTable) {
                return super.createCornerMenu(natTable)
                        .withShowAllColumnsMenuItem().withShowAllRowsMenuItem()
                        .withStateManagerMenuItemProvider();
            }
        });
        natTable.configure();

        panel.setLayout(new GridLayout());
        GridDataFactory.fillDefaults().grab(true, true).applyTo(panel);
        GridDataFactory.fillDefaults().grab(true, true).applyTo(natTable);

        gridLayer.registerCommandHandler(
                new DisplayPersistenceDialogCommandHandler(natTable));

        return panel;
    }

}