/
InventoryViewModel.java
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/
InventoryViewModel.java
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package zk.example.template.locker;
import org.zkoss.bind.BindUtils;
import org.zkoss.bind.annotation.*;
import org.zkoss.zk.ui.Desktop;
import org.zkoss.zul.ListModelList;
import zk.example.template.locker.domain.InventoryItem;
import zk.example.template.locker.domain.InventoryService;
import zk.example.template.locker.lockable.Lockable;
import zk.example.template.locker.lockable.MvvmLockable;
import zk.example.template.locker.lockable.UiLockTracker;
import java.util.concurrent.atomic.AtomicInteger;
public class InventoryViewModel {
private static final AtomicInteger userCounter = new AtomicInteger(0);
private final String username = "user-" + userCounter.incrementAndGet();
private ListModelList<InventoryItem> inventory;
private final UiLockTracker<InventoryItem> lockTracker = new UiLockTracker<>(10, 5);
@Init
public void init(@ContextParam(ContextType.DESKTOP) Desktop desktop) {
desktop.enableServerPush(true);
inventory = new ListModelList<>(InventoryService.getInventory());
}
@Command
public void view(@BindingParam("item") InventoryItem item) {
lockTracker.reset();
lockTracker.observe(new MvvmLockable(username, item));
BindUtils.postNotifyChange(null, null, this, "currentItem");
}
@Command
public void edit(@BindingParam("item") InventoryItem item) {
view(item);
lockTracker.lock();
}
@Command
public void save(@BindingParam("item") InventoryItem item) {
lockTracker.unlock();
inventory.notifyChange(item);
}
@Command
public void cancel(@BindingParam("item") InventoryItem item) {
lockTracker.unlock();
}
public ListModelList<InventoryItem> getInventory() {
return inventory;
}
public Lockable<InventoryItem> getCurrentItem() {
return lockTracker.getLockable();
}
public String getUsername() {
return username;
}
}