您好我尝试在vaadin中添加一个网格按钮,但它会在按钮对象上打印引用。
Grid statementEnquiriesList = new Grid();
statementEnquiriesList.addColumn("", Button.class);
statementEnquiriesList.addColumn("DATE/TIME", String.class);
statementEnquiriesList.addColumn("TRANSACTION ID", String.class);
statementEnquiriesList.addColumn("FROM", String.class);
// historyList is an array object
for (int i = 0; i < historyList.size(); i++)
{
HistoryList recordObj = historyList.get(i);
Button addBtn = new Button();
addBtn.setCaption("Add");
statementEnquiriesList.addRow(addBtn , recordObj.getDate(), recordObj.getTransactionId(), recordObj.getFrom());
}
我如何打印&#34;添加&#34;这个标题
答案 0 :(得分:7)
您无法在Vaadin 7中直接使用网格中的组件。您必须使用ButtonRenderer来呈现按钮
RendererClickListener ownerClickListener = new RendererClickListener() {
private static final long serialVersionUID = 1L;
@Override
public void click(RendererClickEvent event) {
//Someone clicked button
}
};
ButtonRenderer ownerRenderer = new ButtonRenderer(ownerClickListener, "");
grid.getColumn("ownerName").setRenderer(ownerRenderer);
但您可以在Vaadin 8中使用组件,请参阅Grid Components in Vaadin 8。
我使用Vaadin 7并且ButtonRenderer对我不满意,因为没有办法将FontIcon添加到按钮,并且无法将其作为HTML插入。 相反,我使用了component renderer addon。以下是我如何使用它:
Grid grid = new Grid();
BeanItemContainer<EventChange> dataSource = //... primary data source
GeneratedPropertyContainer dataSource2 = new GeneratedPropertyContainer(dataSource);
grid.setContainerDataSource(dataSource2);
dataSource2.addGeneratedProperty("ownerWithButton", new PropertyValueGenerator<Component>() {
private static final long serialVersionUID = 1L;
@Override
public Component getValue(Item item, Object itemId, Object propertyId) {
ClickListener ownerClickListener = new ClickListener() {
private static final long serialVersionUID = 1L;
@Override
public void buttonClick(ClickEvent event) {
// do something, user clicked button for itemId
}
};
Button button = new Button(FontAwesome.USER);
button.addClickListener(ownerClickListener);
return button;
}
@Override
public Class<Component> getType() {
return Component.class;
}
});
grid.setColumns("ownerWithButton", /*and rest of your columns*/);
grid.getColumn("ownerWithButton").setRenderer( new ComponentRenderer());
答案 1 :(得分:6)
Vaadin 8.1现在有一个内置的ComponentRenderer
,用于在网格中显示按钮或其他组件,包括您自己的自定义组件。
在What's New页面上查看第一项“网格中的组件”。
示例:向网格添加标签。
grid.addColumn(
person -> new Label( person.getFullName() ) ,
new ComponentRenderer()
).setCaption( "Full Name" )