Reactive Footnote, wenn existed note (#2277)

Author: TruongQuangSB

java/bundles/org.eclipse.set.feature.table/src/org/eclipse/set/feature/table/ToolboxTableFootnoteView.java

@@ -99,9 +99,14 @@ public void updateFootnotes(final Table table) {
 			startOffset += text.length() + 1;
 
 		}
+		setVisible(!lines.isEmpty());
+
 		if (lines.isEmpty()) {
-			setVisible(false);
-		} else if (!(getParent() instanceof SashForm)) {
+			getParent().layout();
+			return;
+		}
+
+		if (!(getParent() instanceof SashForm)) {
 			setFootnoteDynamicResize();
 		}
 
@@ -122,6 +127,5 @@ private void setFootnoteDynamicResize() {
 		}
 		// Default weight value nattable - 8, footnote - 2
 		sashForm.setWeights(8, 2);
-		setVisible(true);
 	}
 }