java - Is it possible to change the component style at runtime? -

i use swing + nimbus style component. want change style of component @ runtime "nimbus.overrides".

private void setexceptionstate() {     //password.setbackground(new color(200,0,0,120));     uidefaults overrides = new uidefaults();     overrides.put("passwordfield.background", color.red);     password.putclientproperty("nimbus.overrides", overrides);     password.revalidate();     password.updateui(); }  private void resetexceptionstate() {     //password.setbackground(color.white);     uidefaults overrides = new uidefaults();     overrides.put("passwordfield.background", color.white);     password.putclientproperty("nimbus.overrides", overrides); } 

the first time set overrides, lets setexceptionstate() method works. red background. second time use nothing happens. seems, overrides evaluated once.

what want introduce new state ofthe passwordfield , style different. there possibility so?

best regards,

yggdrasil

yes, possible , nimbus listens changes of "nimbus.overrides" - just: not uninstall properties if !instanceof uiresource that's case background, foreground, font @ least (might others well)

in context, did install not-uiresource of red initially, telling laf not touch again - , complies :-)

the way make work, null background before setting new overrides, in:

private void setexceptionstate(jcomponent password) {     password.setbackground(null);     uidefaults overrides = new uidefaults();     overrides.put("passwordfield.background", color.red);     password.putclientproperty("nimbus.overrides", overrides); }  private void resetexceptionstate(jcomponent password) {     password.setbackground(null);     uidefaults overrides = new uidefaults();     overrides.put("passwordfield.background", color.white);     password.putclientproperty("nimbus.overrides", overrides); } 

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update

actually, above doesn't answer real question:

introduce new state of passwordfield , style different

nimbus indeed allow add custom states (though outcome unpredicable, unloved youngest child of synth ;-) way go is

• implement custom state
• register additonal state ui-defaults
• attach properties state needed

all configuration has done after laf installed , before first jpasswordfield instantiated, (didn't test) posing problems if laf switched @ runtime.

protected void installcustompasswordfieldstate() {     // implement custom state     state<jpasswordfield> state = new state<jpasswordfield>("invalid") {          @override         protected boolean isinstate(jpasswordfield c) {             object invalid = c.getclientproperty("invalid");             return boolean.true.equals(invalid);         }      };     uidefaults defaults = uimanager.getlookandfeeldefaults();     // register available states      // note: couldn't find way grab available states     // guesswork     defaults.put("passwordfield.states", "enabled, focused, invalid");     // install custom state     defaults.put("passwordfield.invalid", state);     // install properties custom state     // note: background has no effect     defaults.put("passwordfield[invalid].background",              color.red);      javax.swing.painter<jcomponent> p = new javax.swing.painter<jcomponent>() {          @override         public void paint(graphics2d g, jcomponent object, int width, int height) {             g.setcolor(color.red);             // crude - overpainting complete area, better!             g.fillrect(0, 0, width, height);         }      };     // using painter has effect      defaults.put("passwordfield[invalid].backgroundpainter", p); }  // example usage, toggling // new property (for simplicity implemented clientproperty // toggle invalid state action reset = new abstractaction("reset") {     @override     public void actionperformed(actionevent e) {         boolean isinvalid = boolean.true.equals(field.getclientproperty("invalid"));          if (isinvalid) {             field.putclientproperty("invalid", null);          } else {             field.putclientproperty("invalid", boolean.true);          }         field.repaint();     } };