bundles/org.eclipse.emf.ecp.view.core.swt/src/org/eclipse/emf/ecp/view/internal/core/swt/renderer/BooleanControlSWTRenderer.java

/*******************************************************************************
 * Copyright (c) 2011-2014 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:
 * Eugen - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.ecp.view.internal.core.swt.renderer;

import javax.inject.Inject;

import org.eclipse.core.databinding.Binding;
import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.emf.ecp.view.internal.core.swt.MessageKeys;
import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
import org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer;
import org.eclipse.emf.ecp.view.spi.model.VControl;
import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider;
import org.eclipse.emfforms.spi.common.report.ReportService;
import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
import org.eclipse.emfforms.spi.localization.LocalizationServiceHelper;
import org.eclipse.emfforms.spi.swt.core.layout.SWTGridCell;
import org.eclipse.jface.databinding.swt.WidgetProperties;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

/**
 * @author Eugen
 *
 */
public class BooleanControlSWTRenderer extends SimpleControlSWTControlSWTRenderer {

	/**
	 * Default constructor.
	 *
	 * @param vElement the view model element to be rendered
	 * @param viewContext the view context
	 * @param reportService The {@link ReportService}
	 * @param emfFormsDatabinding The {@link EMFFormsDatabinding}
	 * @param emfFormsLabelProvider The {@link EMFFormsLabelProvider}
	 * @param vtViewTemplateProvider The {@link VTViewTemplateProvider}
	 */
	@Inject
	public BooleanControlSWTRenderer(VControl vElement, ViewModelContext viewContext,
		ReportService reportService,
		EMFFormsDatabinding emfFormsDatabinding, EMFFormsLabelProvider emfFormsLabelProvider,
		VTViewTemplateProvider vtViewTemplateProvider) {
		super(vElement, viewContext, reportService, emfFormsDatabinding, emfFormsLabelProvider, vtViewTemplateProvider);
	}

	/**
	 * {@inheritDoc}
	 *
	 * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTRenderer#createControlCell(int)
	 */
	@Override
	protected SWTGridCell createControlCell(int column) {
		// checkbox button representing Boolean value can not grow
		final SWTGridCell booleanControlCell = super.createControlCell(column);
		booleanControlCell.setHorizontalGrab(false);
		booleanControlCell.setHorizontalFill(false);
		return booleanControlCell;
	}

	@Override
	protected Binding[] createBindings(Control control) throws DatabindingFailedException {
		final Binding binding = getDataBindingContext().bindValue(WidgetProperties.selection().observe(control),
			getModelValue(), withPreSetValidation(new UpdateValueStrategy()), null);
		return new Binding[] { binding };
	}

	@Override
	protected Control createSWTControl(final Composite parent) {
		final Button check = new Button(parent, SWT.CHECK);
		check.setBackground(parent.getBackground());
		check.setData(CUSTOM_VARIANT, "org_eclipse_emf_ecp_control_boolean"); //$NON-NLS-1$

		return check;
	}

	/**
	 * {@inheritDoc}
	 *
	 * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTRenderer#getUnsetText()
	 */
	@Override
	protected String getUnsetText() {
		return LocalizationServiceHelper
			.getString(getClass(), MessageKeys.BooleanControl_NoBooleanSetClickToSetBoolean);
	}

}