Code Samples

Counter

privatefinalMutableIntStatecounterState = mutableState(0);
@OverridepublicvoidonInit(ViewConfigBuilderconfig) {
config.title("Counter")
.cancelOnClick()
.layout(" - # + ");
}
@OverridepublicvoidonFirstRender(RenderContextrender) {
// Current count itemrender.layoutSlot('#')
// The `watch` here updates the item when `counterState` updates
.watch(counterState)
.renderWith(() -> newItemStack(
/* type = */Material.GOLD_INGOT,
/* amount = */counterState.get(render)
));
// Decrement buttonrender.layoutSlot('-', newItemStack(Material.ARROW))
.onClick(counterState::decrement);
// Increment buttonrender.layoutSlot('+', newItemStack(Material.ARROW))
.onClick(counterState::increment);
}