@ApiStatus.Internal
public final class BukkitItemComponentImplHandle extends BukkitComponentHandle<BukkitItemComponentBuilder<Void>> {
@Override
public void rendered(@NotNull ComponentRenderContext context) {
final BukkitItemComponentImpl component = (BukkitItemComponentImpl) context.getComponent();
if (component.getRenderHandler() != null) {
final int initialSlot = component.getPosition();
component.getRenderHandler().accept(context);
// Externally managed components have its own displacement measures
// FIXME Missing implementation
// TODO Component-based context do not need displacement measures?
if (!component.isManagedExternally()) {
final int updatedSlot = ((BukkitItemComponentImpl) context.getComponent()).getPosition();
component.setPosition(updatedSlot);
if (updatedSlot == -1 && initialSlot == -1) {
// TODO needs more user-friendly "do something"-like message
throw new InventoryFrameworkException("Missing position (unset slot) for item component");
}
// TODO Misplaced - move this to overall item component misplacement check
if (initialSlot != -1 && initialSlot != updatedSlot) {
context.getContainer().removeItem(initialSlot);
component.hide();
}
}
// context.getContainer().renderItem(getPosition(), context.getResult());
component.setVisible(true);
return;
}
if (component.getItemStack() == null) {
if (context.getContainer().getType().isResultSlot(component.getPosition())) {
component.show();
return;
}
throw new IllegalStateException("At least one fallback item or render handler must be provided");
}
context.getContainer().renderItem(component.getPosition(), component.getItemStack());
component.show();
}
@Override
public void updated(@NotNull IFComponentUpdateContext context) {
if (context.isCancelled()) return;
final PlatformComponent component = (PlatformComponent) context.getComponent();
// Static item with no `displayIf` must not even reach the update handler
if (!context.isForceUpdate() && component.getDisplayCondition() == null && component.getRenderHandler() == null)
return;
if (component.isVisible() && component.getUpdateHandler() != null) {
component.getUpdateHandler().accept(context);
if (context.isCancelled()) return;
}
((IFRenderContext) context.getTopLevelContext()).renderComponent(component);
}
@Override
public void cleared(@NotNull IFComponentContext context) {
final Component component = context.getComponent();
component.getContainer().removeItem(((ItemComponent) component).getPosition());
}
@Override
public void clicked(@NotNull IFSlotClickContext context) {
final PlatformComponent component = (PlatformComponent) context.getComponent();
if (component.isUpdateOnClick()) context.update();
}
@Override
public BukkitItemComponentBuilder<Void> builder() {
return new BukkitItemComponentBuilder<>();
}
}
https://github.com/DevNatan/inventory-framework/blob/d1ad860f52c8be3825e014bf57508e22d376053b/inventory-framework-platform-bukkit/src/main/java/me/devnatan/inventoryframework/component/BukkitItemComponentImplHandle.java#L26