DnD for rows

platform/platform-api/src/com/intellij/ui/EditableRowTable.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2011 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -172,6 +172,7 @@ public class EditableRowTable {
       }
     );
     updateButtons(table, tableModel, addButton.get(), removeButton.get(), upButton.get(), downButton.get(), p.get());
+    TableRowsDnDSupport.install(table, tableModel);
     return panel;
   }
 

platform/platform-api/src/com/intellij/ui/TableRowsDnDSupport.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * 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 com.intellij.ui;
+
+import com.intellij.ide.dnd.*;
+import com.intellij.util.Function;
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+import javax.swing.table.TableCellEditor;
+import java.awt.*;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public class TableRowsDnDSupport {
+  private TableRowsDnDSupport() {
+  }
+
+  public static void install(@NotNull final JTable table, @NotNull final RowEditableTableModel model) {
+    table.setDragEnabled(true);
+    //table.setDropMode(DropMode.ON);
+    DnDSupport.createBuilder(table)
+      .setBeanProvider(new Function<DnDActionInfo, DnDDragStartBean>() {
+        @Override
+        public DnDDragStartBean fun(DnDActionInfo info) {
+          final Point p = info.getPoint();
+          final TableCellEditor cellEditor = table.getCellEditor();
+          if (cellEditor != null) {
+            cellEditor.stopCellEditing();
+          }
+          return new DnDDragStartBean(Integer.valueOf(table.rowAtPoint(p)));
+        }
+      })
+      .setDropHandler(new DnDDropHandler() {
+        @Override
+        public void drop(DnDEvent event) {
+          final Object o = event.getAttachedObject();
+          final Point p = event.getPoint();
+          if (o instanceof Integer) {
+            final int oldIndex = ((Integer)o).intValue();
+            final int newIndex = table.rowAtPoint(p);
+            model.exchangeRows(oldIndex, newIndex);
+          }
+        }
+      }).install();
+  }
+}