eu.esdihumboldt.hale.ui.views.properties.cell.explanation.CellPrioritySection.java Source code

Introduction

Here is the source code for eu.esdihumboldt.hale.ui.views.properties.cell.explanation.CellPrioritySection.java

Source

/*
 * Copyright (c) 2012 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     HUMBOLDT EU Integrated Project #030962
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.ui.views.properties.cell.explanation;

import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;

import eu.esdihumboldt.hale.common.align.model.Cell;
import eu.esdihumboldt.hale.common.align.model.Priority;
import eu.esdihumboldt.hale.ui.service.align.AlignmentService;
import eu.esdihumboldt.hale.ui.util.viewer.EnumContentProvider;
import eu.esdihumboldt.hale.ui.views.properties.cell.AbstractCellSection;

/**
 * Cell {@link Priority} Section for cell nodes.
 * 
 * @author Andrea Antonello
 */
public class CellPrioritySection extends AbstractCellSection implements ISelectionChangedListener {

    private ComboViewer comboViewer;

    @Override
    public void createControls(Composite parent, TabbedPropertySheetPage aTabbedPropertySheetPage) {
        super.createControls(parent, aTabbedPropertySheetPage);

        Composite page = getWidgetFactory().createComposite(parent);
        page.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).margins(8, 8).create());

        CLabel namespaceLabel = getWidgetFactory().createCLabel(page, Cell.PROPERTY_PRIORITY);
        namespaceLabel.setLayoutData(GridDataFactory.fillDefaults().create());

        comboViewer = new ComboViewer(page, SWT.READ_ONLY | SWT.FLAT | SWT.BORDER);
        comboViewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));

        comboViewer.setContentProvider(EnumContentProvider.getInstance());
        comboViewer.setInput(Priority.class);
        comboViewer.addSelectionChangedListener(this);

    }

    private void setFromCell() {
        Cell cell = getCell();
        Priority currentPriority = cell.getPriority();
        comboViewer.setSelection(new StructuredSelection(currentPriority));
    }

    @Override
    public boolean shouldUseExtraSpace() {
        return true;
    }

    @Override
    public void refresh() {
        super.refresh();

        Cell cell = getCell();
        if (cell != null) {
            comboViewer.getControl().setEnabled(true);
            setFromCell();
        } else {
            comboViewer.getControl().setEnabled(false);
        }
    }

    /**
     * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
     */
    @Override
    public void selectionChanged(SelectionChangedEvent event) {
        ISelection selection = event.getSelection();
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            Object firstElement = structuredSelection.getFirstElement();
            if (firstElement instanceof Priority) {
                Priority priority = (Priority) firstElement;
                Cell cell = getCell();
                if (cell.getPriority() != priority) {
                    AlignmentService alignmentService = (AlignmentService) PlatformUI.getWorkbench()
                            .getService(AlignmentService.class);
                    alignmentService.setCellProperty(cell.getId(), Cell.PROPERTY_PRIORITY, priority);
                }
            }
        }
    }

}