Move to the root the bundles which will be part of v1.4 and v2.2

[lgpl/argeo-commons.git] / org.argeo.eclipse.ui / src / main / java / org / argeo / eclipse / ui / GenericTableComparator.java

diff --git a/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/GenericTableComparator.java b/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/GenericTableComparator.java
new file mode 100644 (file)
index 0000000..a4179cb
--- /dev/null
+++ b/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/GenericTableComparator.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2007-2012 Argeo 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.argeo.eclipse.ui;
+
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerComparator;
+
+public abstract class GenericTableComparator extends ViewerComparator {
+       private static final long serialVersionUID = -1175894935075325810L;
+       protected int propertyIndex;
+       public static final int ASCENDING = 0, DESCENDING = 1;
+       protected int direction = DESCENDING;
+
+       /**
+        * Creates an instance of a sorter for TableViewer.
+        * 
+        * @param defaultColumn
+        *            the default sorter column
+        */
+
+       public GenericTableComparator(int defaultColumnIndex, int direction) {
+               propertyIndex = defaultColumnIndex;
+               this.direction = direction;
+       }
+
+       public void setColumn(int column) {
+               if (column == this.propertyIndex) {
+                       // Same column as last sort; toggle the direction
+                       direction = 1 - direction;
+               } else {
+                       // New column; do a descending sort
+                       this.propertyIndex = column;
+                       direction = DESCENDING;
+               }
+       }
+
+       /**
+        * Must be Overriden in each view.
+        */
+       public abstract int compare(Viewer viewer, Object e1, Object e2);
+}