java - 面板使用与父页面相同的模型

Question

如何获得一个面板来使用某个 modelObject 作为父页面？

我有一个使用 OwnedAccount 作为其模型的表单，并且在该表单中我有一个自定义面板，其中包含包含 FinanceAccount 列表的刷新 View 。问题是对财务帐户的更改并未在表单的模型对象中更改。

一些代码，我删除了很多有 3 个点“...”的代码

@Entity
@Table(name = "ownedaccount")
public class OwnedAccount implements Serializable {

...

    //used for multiple currencies
    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "ownedAccount")
    private List<FinanceAccount> financeAccounts = new ArrayList<FinanceAccount>();

...
}

<小时/>

public class AssetsPage extends LoggedInPage {

...

    // bookmarkable constructor
    public AssetsPage(PageParameters parameters) {
        super(parameters);

        init();
    }

    private void init() {
        final OwnedAccount ownedAccount = getCurrentSelections().getSelectedOwnedAccount();

        add(new FeedbackPanel("feedback"));

        entityEdit = new OwnedAccountForm("entityEdit", ownedAccount);
        add(entityEdit);

    }

    @Override
    protected void selectionsChanged() {
        OwnedAccount selectedOwnedAccount = getCurrentSelections().getSelectedOwnedAccount();
        CompoundPropertyModel<OwnedAccount> model = new CompoundPropertyModel<OwnedAccount>(selectedOwnedAccount);
        entityEdit.setModel(model);
    }

...

    class OwnedAccountForm extends BaseCreateEditForm<OwnedAccount, Void> {

...

        public OwnedAccountForm(String s, OwnedAccount entity) {
            super(s, entity, null);
            assetType = entity.getAssetType();
        }

        @Override
        protected void initComponents(Void initParams) {

  ...
            multipleCurrenciesPanel = new MultipleCurrenciesPanel("multipleCurrenciesPanel", ownedAccountService, getCurrentSelections());
            add(multipleCurrenciesPanel);

...

        }
...

}

    public class MultipleCurrenciesPanel extends Panel {

        OwnedAccountService ownedAccountService;
        CurrentSelections currentSelections;

        public MultipleCurrenciesPanel(String id, OwnedAccountService ownedAccountService, CurrentSelections currentSelections) {
            super(id);
            this.ownedAccountService = ownedAccountService;
            this.currentSelections = currentSelections;
            init();
        }

        private void init() {

            DepositoryLabel currencyLabel = new DepositoryLabel("currency", new ResourceModel("currency"));
            add(currencyLabel);

            DepositoryLabel accountForSecuritasLabel = new DepositoryLabel("account.for.securitas", new ResourceModel("account.for.securitas"));
            add(accountForSecuritasLabel);

            DepositoryLabel accountForCashLabel = new DepositoryLabel("account.for.cash", new ResourceModel("account.for.cash"));
            add(accountForCashLabel);

            DepositoryLabel buttonDeleteLabel = new DepositoryLabel("button.delete", new ResourceModel("button.delete"));
            add(buttonDeleteLabel);

            CurrenciesView currenciesView = new CurrenciesView("financeAccounts", ownedAccountService, currentSelections, this);
            add(currenciesView);

            setOutputMarkupId(true);
        }

    }

<小时/>

更新于 25/9 - 15:15

public class CurrenciesView extends RefreshingView<FinanceAccount> {


    private OwnedAccountService ownedAccountService;
    private CurrentSelections currentSelections;
    private WebMarkupContainer multipleCurrenciesForDepot;



    public CurrenciesView(String id, OwnedAccountService ownedAccountService, CurrentSelections currentSelections, WebMarkupContainer multipleCurrenciesForDepot) {
        super(id);
        this.ownedAccountService = ownedAccountService;
        this.currentSelections = currentSelections;
        this.multipleCurrenciesForDepot = multipleCurrenciesForDepot;
    }


    @Override
    protected Iterator getItemModels() {


        List<FinanceAccount> financeAccounts = ownedAccountService.getFinanceAccounts(currentSelections.getSelectedOwnedAccount());

        return new ModelIteratorAdapter<FinanceAccount>(financeAccounts.iterator()) {
            @Override
            protected IModel<FinanceAccount> model(FinanceAccount object) {
                return new CompoundPropertyModel<FinanceAccount>((object));
            }
        };
    }

    @Override
    protected void populateItem(Item<FinanceAccount> item) {

        final FinanceAccount financeAccount = item.getModelObject();
        item.add(new EnumDropDownChoice<MoneyCurrency>("forCurrency"));
        item.add(new TextField("accountNumber"));
        item.add(new OwnedAccountDropDownChoice("accountForCash", currentSelections.getSelectedLegalEntity().getOwnedBankAccounts()));
        item.add(new AjaxButton("deleteFinanceAccount") {
            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
                //TODO Delete finance account
                ownedAccountService.deleteFinanceAccount(currentSelections.getSelectedOwnedAccount(), financeAccount);
                target.add(multipleCurrenciesForDepot);
            }

            @Override
            protected void onError(AjaxRequestTarget target, Form<?> form) {
                //TODO create error message
            }
        });
    }


}

Answer 1

如果 CurrentSelections 将被两个不同的 wicket 页面/组件使用和修改，则需要对其进行建模。

例如，有一个父页面，它有一个构造函数、一个新的 String 对象和一个使用 String 对象作为参数的 Panel，

public class ParentPage extends WebPage {

       public ParentPage() {

            String string = new String("Dave");
            add(new Panel("childPanel", string));
            string = new String("Brian");  
       }
}

如果在添加面板后更新字符串对象，则更新后的字符串不是面板所具有的字符串。当认为 ParentPage 现在的字符串为“Brian”时，面板显示的是“Dave”。

但是如果我们创建了一个模型并使其使用字符串对象，那么当我们更改字符串时，childPanel 将获得更新。

public class ParentPage extends WebPage {

       public ParentPage() {

            String string = new String("Dave");
            IModel model = new Model(string);

            add(new Panel("childPanel", model));
            model.setObject(new String("Brian"));  
       }
}

这是一个非常简单的例子，但我希望它有帮助。