small improvements

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/utils/TableViewerUtils.java

@@ -17,11 +17,16 @@ $Id$
 +--------------------------------------------------------------------------*/
 package org.fortiss.tooling.base.ui.utils;
 
+import org.eclipse.jface.viewers.CellEditor;
 import org.eclipse.jface.viewers.ColumnLabelProvider;
+import org.eclipse.jface.viewers.ColumnViewer;
 import org.eclipse.jface.viewers.EditingSupport;
+import org.eclipse.jface.viewers.ICellEditorValidator;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.TableViewerColumn;
+import org.eclipse.jface.viewers.TextCellEditor;
 import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Composite;
 
 /**
  * Utility methods for JFace {@link TableViewer}s.
@@ -29,7 +34,7 @@ import org.eclipse.swt.SWT;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: 0F5344CC790350F28E412502C6A79557
+ * @ConQAT.Rating YELLOW Hash: D72A875CBFB2BC8DFAB51FCCEE910F0A
  */
 public class TableViewerUtils {
 
@@ -84,4 +89,42 @@ public class TableViewerUtils {
 		column.setEditingSupport(editingSupport);
 		return column;
 	}
+
+	/** Editing support for integers. */
+	public static abstract class IntegerEditingSupport extends EditingSupport {
+
+		/** The parent where the editing support is needed. */
+		private Composite parent;
+
+		/** Constructor. */
+		public IntegerEditingSupport(ColumnViewer viewer, Composite parent) {
+			super(viewer);
+			this.parent = parent;
+		}
+
+		/** {@inheritDoc} */
+		@Override
+		protected CellEditor getCellEditor(Object element) {
+			CellEditor ce = new TextCellEditor(parent);
+			ce.setValidator(new ICellEditorValidator() {
+
+				@Override
+				public String isValid(Object value) {
+					try {
+						Integer.parseInt(value.toString());
+					} catch (NumberFormatException nfe) {
+						return "Not a valid integer";
+					}
+					return null;
+				}
+			});
+			return ce;
+		}
+
+		/** {@inheritDoc} */
+		@Override
+		protected boolean canEdit(Object element) {
+			return true;
+		}
+	}
 }