bundles/common/org.eclipse.apogy.common.topology.bindings.ui/src/org/eclipse/apogy/common/topology/bindings/ui/composites/AbstractTopologyBindingOverviewComposite.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
 *
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.common.topology.bindings.ui.composites;

import org.eclipse.apogy.common.emf.AbstractFeatureNode;
import org.eclipse.apogy.common.emf.ApogyCommonEMFFacade;
import org.eclipse.apogy.common.emf.transaction.ApogyCommonTransactionFacade;
import org.eclipse.apogy.common.topology.bindings.AbstractTopologyBinding;
import org.eclipse.apogy.common.topology.bindings.ApogyCommonTopologyBindingsPackage;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.conversion.Converter;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.emf.databinding.FeaturePath;
import org.eclipse.emf.databinding.edit.EMFEditProperties;
import org.eclipse.jface.databinding.swt.WidgetProperties;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

public class AbstractTopologyBindingOverviewComposite extends Composite {
	private AbstractTopologyBinding abstractTopologyBinding;
	private DataBindingContext m_bindingContext;

	private final Text txtNamevalue;
	private final Text txtDescriptionvalue;
	private final Text txtAbstractFeatureTreeNode;

	public AbstractTopologyBindingOverviewComposite(Composite parent, int style) {
		super(parent, SWT.NO_BACKGROUND);
		setLayout(new GridLayout(3, false));

		// Name
		Label lblName = new Label(this, SWT.NONE);
		lblName.setAlignment(SWT.RIGHT);
		lblName.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblName.setText("Name:");

		this.txtNamevalue = new Text(this, SWT.NONE);
		GridData gd_txtNamevalue = new GridData(SWT.FILL, SWT.TOP, false, false, 2, 1);
		gd_txtNamevalue.minimumWidth = 300;
		gd_txtNamevalue.widthHint = 300;
		this.txtNamevalue.setLayoutData(gd_txtNamevalue);

		// Description
		Label lblDescription = new Label(this, SWT.NONE);
		lblDescription.setAlignment(SWT.RIGHT);
		lblDescription.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		lblDescription.setText("Description:");

		this.txtDescriptionvalue = new Text(this, SWT.NONE | SWT.WRAP | SWT.V_SCROLL | SWT.MULTI);
		GridData gd_txtDescriptionvalue = new GridData(SWT.FILL, SWT.TOP, false, false, 2, 1);
		gd_txtDescriptionvalue.minimumWidth = 300;
		gd_txtDescriptionvalue.widthHint = 300;
		gd_txtDescriptionvalue.minimumHeight = 50;
		gd_txtDescriptionvalue.heightHint = 50;
		this.txtDescriptionvalue.setLayoutData(gd_txtDescriptionvalue);

		// AbstractFeatureTreeNode
		Label AbstractFeatureTreeNode = new Label(this, SWT.NONE);
		AbstractFeatureTreeNode.setAlignment(SWT.RIGHT);
		AbstractFeatureTreeNode.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
		AbstractFeatureTreeNode.setText("Feature :");

		this.txtAbstractFeatureTreeNode = new Text(this, SWT.NONE);
		this.txtAbstractFeatureTreeNode.setEnabled(false);
		GridData gd_txtAbstractFeatureTreeNode = new GridData(SWT.FILL, SWT.TOP, false, false, 2, 1);
		gd_txtAbstractFeatureTreeNode.minimumWidth = 300;
		gd_txtAbstractFeatureTreeNode.widthHint = 300;
		this.txtAbstractFeatureTreeNode.setLayoutData(gd_txtAbstractFeatureTreeNode);

		// Dispose
		addDisposeListener(new DisposeListener() {
			@Override
			public void widgetDisposed(DisposeEvent e) {
				if (AbstractTopologyBindingOverviewComposite.this.m_bindingContext != null)
					AbstractTopologyBindingOverviewComposite.this.m_bindingContext.dispose();
			}
		});
	}

	public AbstractTopologyBinding getAbstractTopologyBinding() {
		return this.abstractTopologyBinding;
	}

	public void setAbstractTopologyBinding(AbstractTopologyBinding newAbstractTopologyBinding) {
		if (this.m_bindingContext != null)
			this.m_bindingContext.dispose();

		this.abstractTopologyBinding = newAbstractTopologyBinding;

		if (newAbstractTopologyBinding != null) {
			this.m_bindingContext = initDataBindingsCustom();
		}
	}

	@SuppressWarnings({ "unchecked", "rawtypes" })
	private DataBindingContext initDataBindingsCustom() {
		DataBindingContext bindingContext = new DataBindingContext();

		/* Name Value. */
		IObservableValue<Double> observeName = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getDefaultEditingDomain(),
						FeaturePath
								.fromList(ApogyCommonTopologyBindingsPackage.Literals.ABSTRACT_TOPOLOGY_BINDING__NAME))
				.observe(getAbstractTopologyBinding());
		IObservableValue<String> observeNameValueText = WidgetProperties.text(SWT.Modify).observe(this.txtNamevalue);

		bindingContext.bindValue(observeNameValueText, observeName,
				new UpdateValueStrategy().setConverter(new Converter(String.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						return fromObject;
					}

				}), new UpdateValueStrategy().setConverter(new Converter(String.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						return fromObject;
					}

				}));

		/* Description Value. */
		IObservableValue<Double> observeDescription = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getDefaultEditingDomain(),
						FeaturePath.fromList(
								ApogyCommonTopologyBindingsPackage.Literals.ABSTRACT_TOPOLOGY_BINDING__DESCRIPTION))
				.observe(getAbstractTopologyBinding());
		IObservableValue<String> observeDescriptionText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtDescriptionvalue);

		bindingContext.bindValue(observeDescriptionText, observeDescription,
				new UpdateValueStrategy().setConverter(new Converter(String.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						return fromObject;
					}

				}), new UpdateValueStrategy().setConverter(new Converter(String.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						return fromObject;
					}

				}));

		// AbstractFeatureTreeNode
		IObservableValue observeAbstractFeatureValue = EMFEditProperties
				.value(ApogyCommonTransactionFacade.INSTANCE.getDefaultEditingDomain(),
						FeaturePath.fromList(
								ApogyCommonTopologyBindingsPackage.Literals.ABSTRACT_TOPOLOGY_BINDING__FEATURE_NODE))
				.observe(getAbstractTopologyBinding());

		IObservableValue<String> observeAbstractFeatureTreeNodeText = WidgetProperties.text(SWT.Modify)
				.observe(this.txtAbstractFeatureTreeNode);

		bindingContext.bindValue(observeAbstractFeatureTreeNodeText, observeAbstractFeatureValue,
				new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER),
				new UpdateValueStrategy().setConverter(new Converter(AbstractFeatureNode.class, String.class) {
					@Override
					public Object convert(Object fromObject) {
						if (fromObject instanceof AbstractFeatureNode) {
							AbstractFeatureNode abstractFeatureNode = (AbstractFeatureNode) fromObject;
							return ApogyCommonEMFFacade.INSTANCE.getAncestriesString(abstractFeatureNode);
						} else {
							return "";
						}
					}
				}));

		return bindingContext;
	}
}