open popup menu immediately (on mousePressed)

Author: Ralf Wisser

src/main/gui/net/sf/jailer/ui/databrowser/BrowserContentPane.java

@@ -8582,8 +8582,10 @@ protected void onClick(MouseEvent e) {
 					if (UIUtil.plaf.isFlat) {
 						setBackground(UIUtil.BG_FLATSELECTED);
 						setBorder(new LineBorder(UIUtil.BG_FLATSELECTED, 2, true));
+						setOpaque(true);
 						on.setBackground(UIUtil.BG_FLATSELECTED);
 						on.setBorder(new LineBorder(UIUtil.BG_FLATSELECTED, 2, true));
+						on.setOpaque(true);
 						freezed = true;
 						popup.addPropertyChangeListener("visible", new PropertyChangeListener() {
 							@Override

src/main/gui/net/sf/jailer/ui/databrowser/whereconditioneditor/WhereConditionEditorPanel.java

@@ -1081,6 +1081,7 @@ protected void onClick(MouseEvent evt) {
 					if (UIUtil.plaf.isFlat) {
 						setBackground(UIUtil.BG_FLATSELECTED);
 						setBorder(new LineBorder(UIUtil.BG_FLATSELECTED, 2, true));
+						setOpaque(true);
 						freezed = true;
 						popup.addPropertyChangeListener("visible", new PropertyChangeListener() {
 							@Override

src/main/gui/net/sf/jailer/ui/util/LightBorderSmallButton.java

@@ -55,6 +55,7 @@ protected boolean isReady() {
 		return !reactImmediately || !freezed;
 	}
 
+	@Override
 	public void onMouseExited() {
 		JComponent frame = getFrame();
 		if (!UIUtil.plaf.isFlat) {
@@ -75,6 +76,7 @@ public void onMouseExited() {
 		}
 	}
 
+	@Override
 	public void onMouseEntered() {
 		if (isEnabled()) {
 			JComponent frame = getFrame();