无法刷新GXT ListField

Question

概述：

我使用一个动态的GXT ListField来列出DB中某个位置的所有审批者，并预选所选的审批者(isSelected==true)。

问题：

看起来存储区有正确的数据，并在列表中选择正确的序号，但是可见ListField中的数据仍然显示第一次加载ListField时的数据。我无法刷新列表UI以显示来自第二个位置的项目。

示例：

Location1:

所有approvers={a，b，c，d，e，f，g，h，i，j} 选定批准人= {a，b，c} display={a，b，c，d，e，f，g，h，i，j}其中[] = selected

Location2:

全approvers={x，y，z，l，m，n，o，p，q，r} 选定批准人= {x，y，z，l} display={a，b，c，d，e，f，g，h，i，j}，其中[] =选定的(错误！) 预期= {x，y，z，l，m，n，o，p，q，r} 注意:它现在选择了4，这意味着它使用了正确的存储，显示仍然显示location1数据:(

代码：

ListField<Approver>() approversListField ;

    OnModuleload() //..not including for simplicity
    {
    :

    panel.add(getInitialApproverList());
    loadApprovers(1);
    loadApprovers(2);
    }

        private Widget getInitialApproverList() {

            approversListField = new ListField<Approver>();
            approversListField.setEmptyText("employee last name");
            approversListField.setTemplate(getApproverTemplate());
            approversListField.setFieldLabel("Approvers *");
            approversListField.setId("approvers");
            approversListField.setEmptyText("No approvers available.");

                return approversListField;

        }

        private void loadApprovers(int locationID) {

                ListStore<Approver> approversStore = dataStores.getApprovers(locationID);           
                approversListField.setStore(approversStore);
                approversListField.setValueField("userID");
                approversStore.addStoreListener(new StoreListener<Approver>() {
                    @Override
                    public void storeDataChanged(StoreEvent<Approver> se) {
                        super.storeDataChanged(se);

                        approversListField.fireEvent(Events.Render);

                    }
                });

                /**
                 * // * Attach render listener, had to do it on render because select()
                 * // * method only works onrender // *
                 * http://www.sencha.com/forum/showthread.php?55659-Selecting-Items-in-ListField-After-Load // *
                 */
                approversListField.addListener(Events.Render, new Listener<BaseEvent>() {
                    @Override
                    public void handleEvent(BaseEvent be) {

                        ListViewSelectionModel<Approver> approverListFieldSelectionModel = approversListField.getListView()
                                .getSelectionModel();


                        approversListField.getListView().refresh();
                        approverListFieldSelectionModel.deselectAll();                                      

                        System.out.println("approversStore size:"+approversListField.getStore().getCount());
                        for (int i = 0; i < approversListField.getStore().getCount(); i++) {
                            Approver app = approversListField.getStore().getAt(i);

                            System.out.println(app);                    
                            if (app.isSelected() == true) {

                                System.out.println("FOUND THE APPROVER!  " + i);
                                approverListFieldSelectionModel.select(app, true);                                                                              

                            }
                        }

                    }
                });

        }

Answer 1

终于自己找到了。把它留在这里做它的价值。

看起来，如果存储发生变化，您也必须为Listfield的View的存储重新设置存储。

approversListField.getListView().setStore(approversListField.getStore());

无需触发Render.Can，只需对存储数据进行修改即可。

approversStore.addStoreListener(new StoreListener<Approver>() {
            @Override
            public void storeDataChanged(StoreEvent<Approver> se) {
                super.storeDataChanged(se);

                ListViewSelectionModel<Approver> approverListFieldSelectionModel = approversListField.getListView()
                        .getSelectionModel();
                approverListFieldSelectionModel.deselectAll();
                approversListField.getListView().setStore(approversListField.getStore());
                approversListField.getListView().refresh();
                for (int i = 0; i < approversListField.getStore().getCount(); i++) {                    
                    Approver app = approversListField.getStore().getAt(i);
                    if (app.getIsselected() == true) {                  
                        approverListFieldSelectionModel.select(i, true);

                    }
                }

            }
        });