Content of file TableViewerComposite.java

/*******************************************************************************
 * Copyright (c) 2011-2015 EclipseSource Muenchen GmbH and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * Alexandra Buzila - initial API and implementation
 * Johannes Faltermeier - initial API and implementation
 ******************************************************************************/
package org.eclipse.emfforms.spi.swt.table;

import java.util.List;

import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.jface.layout.AbstractColumnLayout;
import org.eclipse.jface.layout.TableColumnLayout;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.ViewerColumn;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.Widget;

/**
 * A {@link Composite} containing a {@link TableViewer}.
 *
 * @author Alexandra Buzila
 * @author Johannes Faltermeier
 *
 */
public class TableViewerComposite extends AbstractTableViewerComposite<TableViewer> {

	private TableViewer tableViewer;
	private TableViewerComparator comparator;

	/**
	 * Default constructor.
	 *
	 * @param parent the parent {@link Composite}
	 * @param style the style bits
	 * @param inputObject the input object
	 * @param customization the {@link TableViewerSWTCustomization}
	 * @param title the title
	 * @param tooltip the tooltip
	 */
	TableViewerComposite(Composite parent, int style, Object inputObject,
		TableViewerSWTCustomization customization,
		IObservableValue title, IObservableValue tooltip) {
		super(parent, style, inputObject, customization, title, tooltip);
	}

	/**
	 * @return the {@link TableViewer}
	 */
	@Override
	public TableViewer getTableViewer() {
		return tableViewer;
	}

	/**
	 * {@inheritDoc}
	 *
	 * @see org.eclipse.emfforms.spi.swt.table.AbstractTableViewerComposite#createTableViewer(org.eclipse.emfforms.spi.swt.table.TableViewerSWTCustomization,
	 *      org.eclipse.swt.widgets.Composite)
	 */
	@Override
	protected TableViewer createTableViewer(TableViewerSWTCustomization<TableViewer> customization,
		Composite viewerComposite) {
		tableViewer = customization.createTableViewer(viewerComposite);
		return tableViewer;
	}

	@Override
	protected AbstractColumnLayout createLayout(Composite viewerComposite) {
		final TableColumnLayout layout = new TableColumnLayout();
		viewerComposite.setLayout(layout);
		return layout;
	}

	@Override
	public Widget[] getColumns() {
		return tableViewer.getTable().getColumns();
	}

	@Override
	public void addColumnListener(ControlListener columnlistener) {
		for (int i = 0; i < tableViewer.getTable().getColumns().length; i++) {
			final TableColumn tableColumn = tableViewer.getTable().getColumns()[i];
			tableColumn.addControlListener(columnlistener);
		}
	}

	@Override
	public TableControl getTableControl() {
		return new TableControl() {
			@Override
			public boolean isDisposed() {
				return getTableViewer().getTable().isDisposed();
			}

			@Override
			public int getItemHeight() {
				return getTableViewer().getTable().getItemHeight();
			}

			@Override
			public boolean getHeaderVisible() {
				return getTableViewer().getTable().getHeaderVisible();
			}

			@Override
			public int getHeaderHeight() {
				return getTableViewer().getTable().getHeaderHeight();
			}

			@Override
			public int getItemCount() {
				return getTableViewer().getTable().getItemCount();
			}
		};
	}

	@Override
	protected ViewerColumn createColumn(ColumnConfiguration config,
		EMFDataBindingContext emfDataBindingContext, TableViewer tableViewer) {

		return new DefaultTableViewerColumnBuilder(config)
			.withDatabinding(emfDataBindingContext)
			.build(tableViewer);
	}

	@Override
	public void setComparator(final TableViewerComparator comparator, List<Integer> sortableColumns) {
		this.comparator = comparator;
		for (int i = 0; i < getTableViewer().getTable().getColumns().length; i++) {
			if (!sortableColumns.contains(i)) {
				continue;
			}
			final int j = i;
			final TableColumn tableColumn = getTableViewer().getTable().getColumns()[i];
			final SelectionAdapter selectionAdapter = new SelectionAdapter() {
				@Override
				public void widgetSelected(SelectionEvent e) {
					setCompareColumn(j);
				}
			};
			tableColumn.addSelectionListener(selectionAdapter);
		}

	}

	@Override
	public void dispose() {
		tableViewer.getControl().dispose();
		tableViewer = null;
		super.dispose();
	}

	@Override
	public void setCompareColumn(int column) {
		final TableColumn tableColumn = getTableViewer().getTable().getColumns()[column];
		comparator.setColumn(column);
		tableViewer.getTable().setSortDirection(comparator.getDirection());
		tableViewer.getTable().setSortColumn(tableColumn);
		tableViewer.refresh();
	}

}