bundles/common/org.eclipse.apogy.common.emf.ui/src/org/eclipse/apogy/common/emf/ui/composites/FilterDetailsComposite.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency
 * 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:
 *     Pierre Allard - initial API and implementation
 *     Regent L'Archeveque,
 *     Olivier L. Larouche
 * 
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.common.emf.ui.composites;

import org.eclipse.apogy.common.emf.IFilter;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecp.ui.view.swt.ECPSWTViewRenderer;
import org.eclipse.emf.ecp.view.spi.model.VView;
import org.eclipse.emf.ecp.view.spi.provider.ViewProviderHelper;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class FilterDetailsComposite<T> extends Composite {
	private static final Logger Logger = LoggerFactory.getLogger(FilterDetailsComposite.class);

	private IFilter<T> filter;

	private final Composite compositeDetails;

	public FilterDetailsComposite(Composite parent, int style) {
		super(parent, style);
		setLayout(new FillLayout(SWT.HORIZONTAL));

		ScrolledComposite scrolledComposite = new ScrolledComposite(this, SWT.H_SCROLL | SWT.V_SCROLL);
		scrolledComposite.setLayout(new GridLayout());
		scrolledComposite.setExpandHorizontal(true);
		scrolledComposite.setExpandVertical(true);

		scrolledComposite.addListener(SWT.Resize, event -> {
			int width = scrolledComposite.getClientArea().width;
			scrolledComposite.setMinSize(parent.computeSize(width, SWT.DEFAULT));
		});

		this.compositeDetails = new Composite(scrolledComposite, SWT.BORDER);
		this.compositeDetails.setLayout(new GridLayout());
		GridData gd_compositeDetails = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1);
		gd_compositeDetails.minimumHeight = 100;
		gd_compositeDetails.heightHint = 100;
		gd_compositeDetails.minimumWidth = 250;
		gd_compositeDetails.widthHint = 250;
		this.compositeDetails.setLayoutData(gd_compositeDetails);
		this.compositeDetails.layout();

		scrolledComposite.setContent(this.compositeDetails);
	}

	public IFilter<T> getFilter() {
		return this.filter;
	}

	public void setFilter(IFilter<T> filter) {
		this.filter = filter;

		if (filter != null) {
			try {
				createEMFForms(this.compositeDetails, filter);
			} catch (Throwable t) {
				Logger.error(t.getMessage(), t);
			}
		}
	}

	private void createEMFForms(Composite parent, EObject eObject) {
		for (Control control : parent.getChildren()) {
			control.dispose();
		}
		try {
			VView viewModel = ViewProviderHelper.getView(eObject, null);
			ECPSWTViewRenderer.INSTANCE.render(parent, eObject, viewModel);
		} catch (Exception e) {
			Logger.error("setCompositeContents(): Error while opening EMF Forms");
		}
		parent.layout();
	}
}