搜索功能
在StockController.java中我们给TextBox注册一个onChanging事件的监听器，当用户输入时我们搜索股票并把结果显示在ListBox中
StockController.java
Java代码
public class StockController extends GenericForwardComposer {
Textbox searchBox;
Listbox itemList;
Include detail;
StockDAO dao = new StockDAO();
private static String DETAIL_URL = "price.zul";
public void onCreate$main(){
itemList.setSelectedIndex(0);
Events.postEvent(new Event(Events.ON_SELECT, itemList));
}
public void onSelect$itemList(){
int id = ((Stock)itemList.getSelectedItem().getValue()).getId();
detail.setSrc(DETAIL_URL + "?id=" + id);
}
public void onChanging$searchBox(InputEvent event) {
String key = event.getValue();
LinkedList item = new LinkedList();
List items = dao.findAll();
if (key.trim().length() != 0) {
for (Iterator iterator = items.iterator(); iterator.hasNext();) {
Stock st = (Stock) iterator.next();
if (st.getName().toLowerCase()
.indexOf(key.toLowerCase()) != -1)
item.add(st);
}
itemList.setModel(new ListModelList(item));
} else itemList.setModel(new ListModelList(items));
}
public List getStocks(){
return dao.findAll();
}
}
Textbox searchBox;
Listbox itemList;
Include detail;
StockDAO dao = new StockDAO();
private static String DETAIL_URL = "price.zul";
public void onCreate$main(){
itemList.setSelectedIndex(0);
Events.postEvent(new Event(Events.ON_SELECT, itemList));
}
public void onSelect$itemList(){
int id = ((Stock)itemList.getSelectedItem().getValue()).getId();
detail.setSrc(DETAIL_URL + "?id=" + id);
}
public void onChanging$searchBox(InputEvent event) {
String key = event.getValue();
LinkedList item = new LinkedList();
List items = dao.findAll();
if (key.trim().length() != 0) {
for (Iterator iterator = items.iterator(); iterator.hasNext();) {
Stock st = (Stock) iterator.next();
if (st.getName().toLowerCase()
.indexOf(key.toLowerCase()) != -1)
item.add(st);
}
itemList.setModel(new ListModelList(item));
} else itemList.setModel(new ListModelList(items));
}
public List getStocks(){
return dao.findAll();
}
}
当用户点击任何一支股票，onSelect事件被触发，onSelect$itemList()这个监听方法被执行，然后重新加载price.zul，显示这支股票的历史价格。
在表格和图中显示股票的历史价格
在PriceController.java中我们得到股票的历史价格的数据并为图表构建一个合适的模型。
PriceController.java
Java代码
public class PriceController extends GenericAutowireComposer {
private StockDAO dao = new StockDAO();
private CategoryModel cateModel;
private List items;
public PriceController() {
init();
}
public void init() {
//get stock id
int id = Integer.parseInt((String) Executions.getCurrent().getParameter("id"));
Stock stock = dao.getStock(id);
items = stock.getPriceItems();
//create category model for chart
cateModel = new SimpleCategoryModel();
for (Iterator iterator = items.iterator(); iterator.hasNext();) {
Price price = (Price) iterator.next();
cateModel.setValue(stock.getName(), price.getDate(), price.getClose());
}
}
public List getPrices(){
return items;
}
public CategoryModel getCateModel() {
return cateModel;
}
}
private StockDAO dao = new StockDAO();
private CategoryModel cateModel;
private List items;
public PriceController() {
init();
}
public void init() {
//get stock id
int id = Integer.parseInt((String) Executions.getCurrent().getParameter("id"));
Stock stock = dao.getStock(id);
items = stock.getPriceItems();
//create category model for chart
cateModel = new SimpleCategoryModel();
for (Iterator iterator = items.iterator(); iterator.hasNext();) {
Price price = (Price) iterator.next();
cateModel.setValue(stock.getName(), price.getDate(), price.getClose());
}
}
public List getPrices(){
return items;
}
public CategoryModel getCateModel() {
return cateModel;
}
}
