Add guard check in automaton transition segment properties

refs 1758

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/dialog/CheckBoxTreeDialog.java

+/*--------------------------------------------------------------------------+
+$Id: codetemplates.xml 1 2011-01-01 00:00:01Z hoelzl $
+|                                                                          |
+| Copyright 2013 ForTISS GmbH                     |
+|                                                                          |
+| Licensed under the Apache License, Version 2.0 (the "License");          |
+| you may not use this file except in compliance with the License.         |
+| You may obtain a copy of the License at                                  |
+|                                                                          |
+|    http://www.apache.org/licenses/LICENSE-2.0                            |
+|                                                                          |
+| Unless required by applicable law or agreed to in writing, software      |
+| distributed under the License is distributed on an "AS IS" BASIS,        |
+| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
+| See the License for the specific language governing permissions and      |
+| limitations under the License.                                           |
++--------------------------------------------------------------------------*/
+package org.fortiss.tooling.base.ui.dialog;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.conqat.ide.commons.ui.jface.TreeContentProviderBase;
+import org.eclipse.jface.dialogs.TitleAreaDialog;
+import org.eclipse.jface.viewers.CheckStateChangedEvent;
+import org.eclipse.jface.viewers.CheckboxTreeViewer;
+import org.eclipse.jface.viewers.ICheckStateListener;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Shell;
+
+/**
+ * 
+ * @author czhang
+ * @author $Author: hoelzl $
+ * @version $Rev: 18709 $
+ * @ConQAT.Rating RED Hash:
+ */
+public class CheckBoxTreeDialog extends TitleAreaDialog {
+
+	/** stores checkboxTreeViewer */
+	private CheckboxTreeViewer checkboxTreeViewer;
+
+	/** stores rootElements */
+	private ArrayList<Object> rootElements;
+
+	/** stores selected objects */
+	private Object[] selectedObjects;
+
+	/** stores title */
+	private String title;
+
+	/** stores message */
+	private String message;
+
+	/** Constructor. */
+	public CheckBoxTreeDialog(Shell parentShell, List<?> roots, String title, String message) {
+		super(parentShell);
+		if(roots == null) {
+			rootElements = new ArrayList<Object>();
+		} else {
+			rootElements = new ArrayList<Object>(roots);
+		}
+		this.title = title;
+		this.message = message;
+		setBlockOnOpen(true);
+	}
+
+	/** {@inheritDoc} */
+	@Override
+	protected Control createDialogArea(Composite parent) {
+		Composite container = (Composite)super.createDialogArea(parent);
+		super.setTitle(title);
+		super.setMessage(message);
+
+		checkboxTreeViewer = new CheckboxTreeViewer(container, SWT.NONE);
+		checkboxTreeViewer.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
+		checkboxTreeViewer.setContentProvider(new TreeContentProviderBase() {
+
+			@Override
+			public Object[] getChildren(Object parentElement) {
+				if(parentElement == rootElements) {
+					return rootElements.toArray();
+				}
+				return null;
+			}
+		});
+		checkboxTreeViewer.setInput(rootElements);
+		checkboxTreeViewer.addCheckStateListener(new ICheckStateListener() {
+
+			@Override
+			public void checkStateChanged(CheckStateChangedEvent event) {
+				setSelectedObjects();
+			}
+		});
+		return container;
+	}
+
+	/** Gets selectedObjects. */
+	public Object[] getSelectedObjects() {
+		return selectedObjects;
+	}
+
+	/** Sets selectedObjects. */
+	private void setSelectedObjects() {
+		selectedObjects = checkboxTreeViewer.getCheckedElements();
+	}
+}