Spreadsheet refresh fix

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/ui/controls/lightgrid/LightGrid.java

@@ -448,6 +448,8 @@ public abstract class LightGrid extends Canvas {
     {
         if (refreshColumns) {
             this.removeAll();
+        } else {
+            this.resetData();
         }
         IGridContentProvider contentProvider = getContentProvider();
         {
@@ -461,8 +463,6 @@ public abstract class LightGrid extends Canvas {
             this.parentNodes = parents.toArray(new GridNode[parents.size()]);
         }
         this.displayedToolTipText = null;
-        this.topIndex = -1;
-        this.bottomIndex = -1;
 
         if (refreshColumns) {
             this.maxColumnDepth = 0;
@@ -1253,6 +1253,15 @@ public abstract class LightGrid extends Canvas {
     public void removeAll()
     {
         checkWidget();
+        resetData();
+
+        topColumns.clear();
+        columns.clear();
+        columnElements = new Object[0];
+        rowElements = new Object[0];
+    }
+
+    private void resetData() {
         deselectAll();
         vScroll.setSelection(0);
         hScroll.setSelection(0);
@@ -1262,11 +1271,6 @@ public abstract class LightGrid extends Canvas {
         topIndex = -1;
         bottomIndex = -1;
         shiftSelectionAnchorColumn = null;
-
-        topColumns.clear();
-        columns.clear();
-        columnElements = new Object[0];
-        rowElements = new Object[0];
     }
 
     /**

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/ui/controls/resultset/IResultSetPresentation.java

@@ -38,7 +38,7 @@ public interface IResultSetPresentation {
     String PRES_TOOLS_BEGIN = "rsv_pres_begin";
     String PRES_TOOLS_END = "rsv_pres_end";
 
-    public enum RowPosition {
+    enum RowPosition {
         FIRST,
         PREVIOUS,
         NEXT,

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/ui/controls/resultset/ResultSetPropertyTester.java

@@ -51,11 +51,11 @@ public class ResultSetPropertyTester extends PropertyTester
         if (PROP_ACTIVE.equals(property)) {
             return true;
         } else if (PROP_HAS_DATA.equals(property)) {
-            return rsv.getModel().getRowCount() > 0;
+            return rsv.getModel().hasData();
         } else if (PROP_HAS_MORE_DATA.equals(property)) {
             return rsv.isHasMoreData();
         } else if (PROP_CAN_COPY.equals(property)) {
-            return rsv.getActivePresentation().getCurrentAttribute() != null && rsv.getCurrentRow() != null;
+            return rsv.getModel().hasData();
         } else if (PROP_CAN_PASTE.equals(property) || PROP_CAN_CUT.equals(property)) {
             DBDAttributeBinding attr = rsv.getActivePresentation().getCurrentAttribute();
             return attr != null && !rsv.isAttributeReadOnly(attr);