/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package openbook.client;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingWorker;
import jpa.tools.swing.EntityDataModel;
import jpa.tools.swing.EntityTableView;
import jpa.tools.swing.ErrorDialog;
import openbook.domain.Book;
import openbook.domain.Inventory;
import openbook.server.OpenBookService;
/**
* A page to view and supply low inventory items.
*
* @author Pinaki Poddar
*
*/
@SuppressWarnings("serial")
public class SupplyPage extends JPanel {
private final OpenBookService _service;
private final EntityTableView<Inventory> _lowInventories;
private final JButton _supply;
private final JButton _view;
private final JLabel _title;
private static int REORDER_LIMIT = 10;
private static int REORDER_QUANTITY = 40;
public SupplyPage(final OpenBookService service) {
setLayout(new BorderLayout());
_service = service;
_title = new JLabel(REORDER_LIMIT + " lowest inventory items");
_view = new JButton("Show " + REORDER_LIMIT + " lowest inventory items");
_supply = new JButton("Supply " + REORDER_QUANTITY + " to each item");
List<Inventory> orders = getInventory(REORDER_LIMIT);
_lowInventories = new EntityTableView<Inventory>(Inventory.class,
orders,
EntityDataModel.BASIC_ATTR | EntityDataModel.ASSOCIATION_ATTR,
service.getUnit());
add(_title, BorderLayout.NORTH);
add(_lowInventories, BorderLayout.CENTER);
JPanel buttons = new JPanel();
buttons.add(_view);
buttons.add(_supply);
add(buttons, BorderLayout.SOUTH);
_view.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
_lowInventories.getDataModel().updateData(getInventory(REORDER_LIMIT));
}
});
/**
* Supplies each inventory displayed.
*/
_supply.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SwingWorker<List<Inventory>, Void>() {
@Override
protected List<Inventory> doInBackground() throws Exception {
EntityDataModel<Inventory> invs = _lowInventories.getDataModel();
List<Inventory> updated = new ArrayList<Inventory>();
for (Inventory inv : invs) {
Book supplied = _service.supply(inv.getBook(), REORDER_QUANTITY);
updated.add(supplied.getInventory());
}
return updated;
}
public void done() {
try {
_lowInventories.getDataModel().updateData(get(1, TimeUnit.SECONDS));
} catch (Exception e) {
new ErrorDialog(e).setVisible(true);
}
}
}.execute();
}
});
}
/**
* Gets the orders in a background (i.e. not AWT event dispatch thread) thread.
* <br>
* But blocks painting anyway, because that is what is intended.
*
*/
private List<Inventory> getInventory(final Integer limit) {
SwingWorker<List<Inventory>, Void> worker = new SwingWorker<List<Inventory>, Void>() {
@Override
protected List<Inventory> doInBackground() throws Exception {
return _service.getReorderableBooks(REORDER_LIMIT);
}
};
worker.execute();
try {
return worker.get();
} catch (Exception e) {
new ErrorDialog(e).setVisible(true);
}
return Collections.emptyList();
}
}