Spinner editing support

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/tablecell/AbstractIntegerSpinnerEditingSupport.java

+/*--------------------------------------------------------------------------+
+$Id: codetemplates.xml 1 2011-01-01 00:00:01Z hoelzl $
+|                                                                          |
+| Copyright 2017 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.tablecell;
+
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.jface.viewers.CellEditor;
+import org.eclipse.jface.viewers.ColumnViewer;
+import org.eclipse.jface.viewers.EditingSupport;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Spinner;
+
+/**
+ * 
+ * @author eder
+ * @author $Author: bayha $
+ * @version $Rev: 18709 $
+ * @ConQAT.Rating GREEN Hash: 31B4795F99F85B3C5C363D1368F79245
+ */
+public abstract class AbstractIntegerSpinnerEditingSupport extends EditingSupport {
+	/**
+	 * Constructor.
+	 * 
+	 * @param viewer
+	 *            The {@link ColumnViewer} this {@link EditingSupport} is used in.
+	 */
+	protected AbstractIntegerSpinnerEditingSupport(ColumnViewer viewer) {
+		super(viewer);
+	}
+
+	/**
+	 * Retrieves the maximum value for the spinner.
+	 * 
+	 * @return Maximum value.
+	 */
+	protected int getSpinnerMaximum() {
+		return Integer.MAX_VALUE;
+	}
+
+	/**
+	 * Retrieves the minimum value for the spinner.
+	 * 
+	 * @return Minimum value.
+	 */
+	protected int getSpinnerMinimum() {
+		return 1;
+	}
+
+	/** {@inheritDoc} */
+	@Override
+	protected CellEditor getCellEditor(Object element) {
+		if(element instanceof EObject) {
+			return new CellEditor((Composite)getViewer().getControl()) {
+
+				Spinner spinner;
+
+				/** {@inheritDoc} */
+				@Override
+				protected Control createControl(Composite parent) {
+					spinner = new Spinner(parent, SWT.NONE);
+
+					spinner.setMinimum(getSpinnerMinimum());
+					spinner.setMaximum(getSpinnerMaximum());
+
+					return spinner;
+				}
+
+				/** {@inheritDoc} */
+				@Override
+				protected Object doGetValue() {
+					return spinner.getSelection();
+				}
+
+				/** {@inheritDoc} */
+				@Override
+				protected void doSetFocus() {
+					spinner.setFocus();
+				}
+
+				/** {@inheritDoc} */
+				@Override
+				protected void doSetValue(Object value) {
+					if(value instanceof Integer) {
+						spinner.setSelection((int)value);
+					}
+				}
+			};
+		}
+		return null;
+	}
+}