[Eap-list] Making dialogs smaller than their minimum size

[Thomas Singer]

Hello,

when resizing the dialogs in IDEA, it is possible to make them smaller than 
their minimum size (see attached graphic).

To prevent this, override JDialog's createRootPane() method:

   protected JRootPane createRootPane() {
     return new QRootPane(this);
   }

and create this class:

   public class QRootPane extends JRootPane {

     private Window window;

     public QRootPane(Window window) {
       this.window = window;
     }

     public void reshape(int x, int y, int width, int height) {
       Dimension prefSize = getPreferredSize();
       if (width < prefSize.width || height < prefSize.height) {
         Dimension size = window.getSize();
         if (width < prefSize.width) {
           size.width = (size.width - width) + prefSize.width;
           width = prefSize.width;
         }

         if (height < prefSize.height) {
           size.height = (size.height - height) + prefSize.height;
           height = prefSize.height;
         }

         window.setSize(size);
       }

       super.reshape(x, y, width, height);
     }
   }

Best regards,
Thomas Singer

dialogsSmallerThanMinimumSize.png
Description: PNG image