/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.openjpa.trader.client;
import org.apache.openjpa.trader.client.event.ServiceEvent;
import org.apache.openjpa.trader.client.event.ServiceEventHandler;
import org.apache.openjpa.trader.client.ui.GridCellRenderer;
import org.apache.openjpa.trader.client.ui.ScrollableTable;
import org.apache.openjpa.trader.domain.Ask;
import org.apache.openjpa.trader.domain.Bid;
import org.apache.openjpa.trader.domain.Tradable;
import org.apache.openjpa.trader.domain.Trade;
import org.apache.openjpa.trader.domain.Trader;
import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
/**
* One of the core component widgets to display the committed trades.
* The panel is configured for either {@link Ask} or {@link Bid} and
* accordingly it adjusts some of its labels or contents.
*
* @author Pinaki Poddar
*
*/
public class TradeHistoryPanel extends ScrollableTable<Trade>
implements ServiceEventHandler.AddTradeHandler {
private final OpenTrader session;
private final Class<? extends Tradable> _type;
public TradeHistoryPanel(final OpenTrader session, Class<? extends Tradable> type,
final int w, final int h) {
super("Stocks " + (type == Ask.class ? "sold" : "bought") + " by " + session.getName(), w,h, true);
this.session = session;
this._type = type;
session.registerHandler(ServiceEvent.TradeCommitted.TYPE, this);
setColumnHeader(0, "Stock", "20%");
setColumnHeader(1, "Price", "20%");
setColumnHeader(2, "Volume", "20%");
setColumnHeader(3, type == Ask.class ? "Buyer" : "Seller", "40%");
// Stock symbol
setRenderer(0, new GridCellRenderer<Trade>() {
public Widget render(Trade model) {
return new Label(model.getStock().getSymbol());
}
});
// Price of the trade
setRenderer(1, new GridCellRenderer<Trade>() {
public Widget render(Trade t) {
return FormatUtil.formatPrice(t.getPrice());
}
});
// Volume of the trade
setRenderer(2, new GridCellRenderer<Trade>() {
public Widget render(Trade t) {
return FormatUtil.formatVolume(t.getVolume());
}
});
// Counter Party
setRenderer(3, new GridCellRenderer<Trade>() {
public Widget render(Trade t) {
Trader cpty = session.getTrader().equals(t.getBuyer()) ? t.getSeller() : t.getBuyer();
return new Label(cpty.getName());
}
});
}
/**
* ---------------------------------------------------------------------------------
* Service Event Response Management
* ---------------------------------------------------------------------------------
*/
/**
* On receipt of the event determines if it is relevant for this instance.
* Because an instance display either the Trades sold or bought.
* If relevant then updates the display.
*/
public void onTradeCommitted(ServiceEvent.TradeCommitted event) {
Trader trader = session.getTrader();
Trade trade = event.getPayload();
if ((trader.equals(trade.getSeller()) && _type == Ask.class)
|| (trader.equals(trade.getBuyer()) && _type == Bid.class)) {
insert(trade);
}
}
}