blackberry - Modify class so that ButtonField is unselectable (never has focus) -


how can modify below class button field unselectable (never has focus), , therefore never highlighted ?

thanks

import net.rim.device.api.system.bitmap; import net.rim.device.api.ui.font; import net.rim.device.api.ui.graphics; import net.rim.device.api.ui.ui; import net.rim.device.api.ui.component.buttonfield;  /**  * button field bitmap label.  */ public class bitmapfield extends buttonfield {         private bitmap bitmap;         private bitmap bitmaphighlight;         private boolean highlighted = false;         private int width;         private string label;         private font font;          /**          * instantiates new bitmap button field.          *           * @param bitmap bitmap use label          */         public bitmapfield(bitmap bitmap, bitmap bitmaphighlight, string label, int width, font font) {             this(bitmap, bitmaphighlight, buttonfield.consume_click|buttonfield.field_hcenter|buttonfield.field_vcenter                     , label, width, font);          }          protected void onfocus(int direction) {              this.sethighlight(true);             super.onfocus(direction);              }              protected void onunfocus() {                 this.sethighlight(false);             super.onunfocus();              }           public bitmapfield(bitmap bitmap, bitmap bitmaphighlight, long style,                  string label, int width, font font) {             super(style);             this.bitmap = bitmap;             this.bitmaphighlight = bitmaphighlight;             this.width = width;             this.label = label;             this.font = font;         }          /* (non-javadoc)          * @see net.rim.device.api.ui.component.buttonfield#layout(int, int)          */         protected void layout(int width, int height) {                 setextent(getpreferredwidth(), getpreferredheight());         }          /* (non-javadoc)          * @see net.rim.device.api.ui.component.buttonfield#getpreferredwidth()          */         public int getpreferredwidth() {                 return bitmap.getwidth()+this.width;         }          /* (non-javadoc)          * @see net.rim.device.api.ui.component.buttonfield#getpreferredheight()          */         public int getpreferredheight() {                 return bitmap.getheight()+20;         }          /* (non-javadoc)          * @see net.rim.device.api.ui.component.buttonfield#paint(net.rim.device.api.ui.graphics)          */         protected void paint(graphics graphics) {                 super.paint(graphics);                 int width = bitmap.getwidth();                 int height = bitmap.getheight();                 bitmap b = bitmap;                 if (highlighted)                     b = bitmaphighlight;                  //graphics.fillroundrect(0, 0, getwidth(), getheight(), 10, 10);                   graphics.drawbitmap(0, 0, width, height, b, 0, 0);                 graphics.setfont(font);                 graphics.drawtext(label, 0, bitmap.getheight());           }          public void sethighlight(boolean highlight)         {             this.highlighted = highlight;                    } }

add style bit field.non_focusable constructor.


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