org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/property/DiagramPropertySection.java

/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2013, 2013 SAP AG.
 * 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:
 *    SAP AG - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.fmc.blockdiagram.editor.property;

import java.util.Iterator;

import org.eclipse.fmc.blockdiagram.editor.algorithm.node.FMCNodeAlgorithm;
import org.eclipse.fmc.blockdiagram.editor.algorithm.node.FMCNodeAlgorithmFactory;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.mm.pictograms.Shape;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Spinner;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;

/**
 * This property section shows actions and properties when the diagram is
 * selected in the editor.
 * 
 * @author Benjamin Schmeling
 * 
 */
public class DiagramPropertySection extends FMCPropertySection {

	private FMCNodeAlgorithmFactory factory = FMCNodeAlgorithmFactory
			.getInstance();
	private Spinner gridUnit;
	private Button anchorsVisible;
	private Button anchorsEnabled;

	/**
	 * Getter for anchorsVisible
	 * 
	 * @return anchorsVisible button
	 */
	Button getAnchorsVisible() {
		return anchorsVisible;
	}

	@Override
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.ui.views.properties.tabbed.AbstractPropertySection#createControls
	 * (org.eclipse.swt.widgets.Composite,
	 * org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage)
	 */
	public void createControls(Composite parent,
			TabbedPropertySheetPage aTabbedPropertySheetPage) {
		super.createControls(parent, aTabbedPropertySheetPage);
		TabbedPropertySheetWidgetFactory fac = getWidgetFactory();
		comp = fac.createComposite(parent, SWT.NONE);
		comp.setLayout(new GridLayout(2, false));
		createDiagramControls(fac);
		refresh();
	}

	/**
	 * 
	 * @param fac
	 */
	protected void createGridUnit(TabbedPropertySheetWidgetFactory fac) {
		fac.createLabel(comp, "GridUnit:");
		gridUnit = new Spinner(comp, SWT.BORDER);
		gridUnit.addModifyListener(new ModifyListener() {

			@Override
			public void modifyText(final ModifyEvent e) {
				int unit = ((Spinner) e.getSource()).getSelection();
				PictogramElement el = getSingleInput();
				if (el != null && el instanceof Diagram) {
					Diagram diagram = (Diagram) el;
					if (unit != diagram.getGridUnit())
						getActions().changeGridUnit(diagram, unit);

				}
			}
		});
	}

	/**
	 * 
	 * @param fac
	 */
	protected void createAnchorsVisible(TabbedPropertySheetWidgetFactory fac) {
		fac.createLabel(comp, "Anchors visible:");
		anchorsVisible = new Button(comp, SWT.CHECK);
		anchorsVisible.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(SelectionEvent e) {
				getActions().visualizeAnchors(getDiagram(),
						anchorsVisible.getSelection());
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent e) {
			}
		});
	}

	/**
	 * 
	 * @param fac
	 */
	protected void createAnchorsEnabled(TabbedPropertySheetWidgetFactory fac) {
		fac.createLabel(comp, "Anchors enabled:");
		anchorsEnabled = new Button(comp, SWT.CHECK);
		anchorsEnabled.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(SelectionEvent e) {
				getActions().enableAnchors(getDiagram(),
						anchorsEnabled.getSelection());
				if (anchorsEnabled.getSelection()
						&& anchorsVisible.getSelection())
					getActions().visualizeAnchors(getDiagram(),
							anchorsVisible.getSelection());
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent e) {
			}
		});
	}

	/**
	 * Creates all controls for this property section.
	 * 
	 * @param fac
	 */
	protected void createDiagramControls(TabbedPropertySheetWidgetFactory fac) {
		// Canot be changed until diagram is reopened
		// createGridUnit(fac);
		createAnchorsVisible(fac);
		createAnchorsEnabled(fac);
	}

	@Override
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.ui.views.properties.tabbed.AbstractPropertySection#refresh()
	 */
	public void refresh() {
		super.refresh();
		boolean visible = false;
		boolean enabled = false;
		if (getSingleInput() instanceof Diagram) {
			Diagram diag = (Diagram) getSingleInput();
			for (Iterator<Shape> iterator = diag.getChildren().iterator(); !visible
					&& iterator.hasNext();) {
				Shape shape = iterator.next();
				FMCNodeAlgorithm nodeAlgorithm = factory.getShape(shape);
				if (nodeAlgorithm != null) {
					if (nodeAlgorithm.isBoxAnchorsVisible(shape))
						visible = true;
					if (nodeAlgorithm.hasUnusedAnchors(shape))
						enabled = true;
				}
			}
			anchorsVisible.setSelection(visible);
			anchorsEnabled.setSelection(enabled);
		}
		// gridUnit.setSelection(getDiagram().getGridUnit());
	}

}