Working example

HuskyUI v0.5.0 example.java

StateContainer container = new StateContainer();
container.addState(
    Page.builder()
        .setUpdatable(true)
        .setUpdater(page -> {
            int count = 0;
            for(Inventory slot: page.getPageView().slots()){

                if(!slot.peek().isPresent() && count == page.getTicks()%page.getPageView().capacity()){
                    slot.set(ItemStack.of(ItemTypes.STAINED_GLASS_PANE,count));
                }else{
                    if(slot.peek().isPresent()) {
                        ItemStack stack = slot.peek().get();
                        if (stack.getType() == ItemTypes.STAINED_GLASS_PANE) {
                            slot.set(ItemStack.empty());
                        }
                    }
                }
                count++;
            }
        })
        .setUpdateTickRate(20)
        .setTitle(Text.of(TextColors.RED,"BLARG"))
            .addElement(new ActionableElement(new Action(container,ActionType.NORMAL,"test2"),ItemStack.builder().
                    itemType(ItemTypes.COOKIE)
                    .build()))
        .build("test")
);
container.addState(
    Page.builder()
        .setUpdatable(false)
        .setTitle(Text.of(TextColors.GREEN,"alt"))
        .addElement(new ActionableElement(new Action(container,ActionType.BACK,"test"),ItemStack.builder().
                itemType(ItemTypes.COOKIE)
                .build()))
        .setParent("test")
        .build("test2")
);
container.launchFor(plr);