From e36e5dbecdab60c86a6d120058693b2be6cf62f2 Mon Sep 17 00:00:00 2001
From: Konstantin Bulenkov <kb@jetbrains.com>
Date: Thu, 19 Jan 2012 13:16:53 +0100
Subject: [PATCH] IDEA-73527 IOOBE at
 com.intellij.ui.tabs.FileColorSettingsTable$ModelAdapter.exchangeRows

---
 .../com/intellij/ui/TableRowsDnDSupport.java  | 27 ++++++++++++++++---
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/platform/platform-api/src/com/intellij/ui/TableRowsDnDSupport.java b/platform/platform-api/src/com/intellij/ui/TableRowsDnDSupport.java
index 71079c808617..d199d2694e61 100644
--- a/platform/platform-api/src/com/intellij/ui/TableRowsDnDSupport.java
+++ b/platform/platform-api/src/com/intellij/ui/TableRowsDnDSupport.java
@@ -43,7 +43,15 @@ public class TableRowsDnDSupport {
           if (cellEditor != null) {
             cellEditor.stopCellEditing();
           }
-          return new DnDDragStartBean(Integer.valueOf(table.rowAtPoint(p)));
+          return new DnDDragStartBean(new TableRowDragInfo(table, Integer.valueOf(table.rowAtPoint(p))));
+        }
+      })
+      .setTargetChecker(new DnDTargetChecker() {
+        @Override
+        public boolean update(DnDEvent event) {
+          final Object o = event.getAttachedObject();
+          event.setDropPossible(o instanceof TableRowDragInfo && ((TableRowDragInfo)o).table == table);
+          return false;
         }
       })
       .setDropHandler(new DnDDropHandler() {
@@ -51,8 +59,8 @@ public class TableRowsDnDSupport {
         public void drop(DnDEvent event) {
           final Object o = event.getAttachedObject();
           final Point p = event.getPoint();
-          if (o instanceof Integer) {
-            int oldIndex = ((Integer)o).intValue();
+          if (o instanceof TableRowDragInfo && ((TableRowDragInfo)o).table == table) {
+            int oldIndex = ((TableRowDragInfo)o).row;
             if (oldIndex == -1) return;
             int newIndex = table.rowAtPoint(p);
             if (newIndex == -1) {
@@ -66,7 +74,8 @@ public class TableRowsDnDSupport {
                 min++;
               }
               table.getSelectionModel().setSelectionInterval(min, min);
-            } else {
+            }
+            else {
               while (max > min) {
                 model.exchangeRows(max, max - 1);
                 max--;
@@ -77,4 +86,14 @@ public class TableRowsDnDSupport {
         }
       }).install();
   }
+  
+  static class TableRowDragInfo {
+    public final JTable table;
+    public final int row;
+
+    TableRowDragInfo(JTable table, int row) {
+      this.table = table;
+      this.row = row;
+    }
+  }
 }