🚀 go-pugleaf

It was as simple as take this line out!
//        ohmsLawPanel.setLayout(gridLayout1);

Magnus wrote:

> Hi,
> 
> I want to build an application for set of calculators, about 20, (i.e. 
> formulas where the user enters value, click calculate, and get the answer).
> 
> My plan is to create a frame with a selection list to the left (in a 
> JPanel) and a JPanel (cardlayout) to the right showing the formula 
> selected in the list.
> 
> Having worked with JB and cardlayout, Design mode gets really slow when 
> a lot of labels and fields are entered. So my thought was to create a 
> class per formula and extend JPanel and the only code in "main" would be 
> to show the right panel with
> 
> cardLayout1.show(jPanel2,"formula1Panel"); // jPanel2 is my cardlayout 
> panel
> 
> It works to a part. I create my formula1 class and set the Layout to 
> GridBagLayout. It all looks good in design.
> In main (to test before I create my showRightFormula method) I try to 
> just display the right panel with code as above, right after call to 
> jbInit(). The panel shows empty.
> 
> When I in design mode for "main" set different Layout managers, they 
> override my formula1-class layout and displays as it feels like.
> 
> What to do?
> 
> --- Code ---
> 
> // main
>     JPanel jPanel1 = new JPanel(); // where to put list
>     JScrollPane jScrollPane1 = new JScrollPane();
>     JList calcSelectjList = new JList();
>     GridBagLayout gridBagLayout1 = new GridBagLayout();
>     JPanel jPanel2 = new JPanel(); // cardlayout panel
>     CardLayout cardLayout1 = new CardLayout();
>     formula1 ohmsLawPanel = new formula1();
>     JPanel emptyPanel = new JPanel(); // to show when no selection
> 
> //cosntructor
>         try {
>             setDefaultCloseOperation(EXIT_ON_CLOSE);
>             jbInit();
>             calcSelectjList.setListData(calculators);
>             cardLayout1.show(jPanel2,"ohmsLawPanel");
>         } catch (Exception exception) {
>             exception.printStackTrace();
>         }
> 
> // my extended class
> 
> class fomula1 extends JPanel {
> 
>     JTextField jTextField1 = new JTextField();
>     JLabel jLabel2 = new JLabel();
>     JLabel jLabel3 = new JLabel();
>     JButton jButton1 = new JButton();
>     GridBagLayout gridBagLayout1 = new GridBagLayout();
> 
>     public formula1() {
>         try {
>             jbInit();
>         } catch (Exception ex) {
>             ex.printStackTrace();
>         }
>     }
> 
>     public void paintComponent(Graphics g) {
>         super.paintComponent(g);
>     }
> 
>     private void jbInit() throws Exception {
>     ...
>         jLabel1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 20));
>         jLabel1.setText("=");
>         jLabel2.setHorizontalAlignment(SwingConstants.CENTER);
>         jLabel3.setText("*");
> 
>         jButton1.setMaximumSize(new Dimension(80, 30));
>         jButton1.setMinimumSize(new Dimension(80, 30));
>         jButton1.setPreferredSize(new Dimension(80, 30));
> 
>         jButton1.setText("Reset");
>     ...
>         this.add(jButton1, new GridBagConstraints(3, 2, 2, 1, 0.0, 0.0
>                          , GridBagConstraints.CENTER,
>                          GridBagConstraints.NONE,
>                          new Insets(13, 10, 18, 23), 20, 0));
>     }