首先,我正在使用 ldap 进行登录身份验证的时间跟踪页面。对于登录,我创建了一个对话框,将verticalpanel 设置为其小部件。我的垂直面板包含两个用于输入用户名/密码的文本框和一个用于将数据发送到 ldap 服务器的按钮。
在模块加载时弹出对话框并获取登录成功时的时间跟踪内容。
对于我的问题:“LoginWidget”和“LoginClickHandler”具有分离的类,因此我需要在模块加载时获取登录按钮以添加“LoginClickHandler”。
处理这个问题的最佳方法是什么?- 因为我知道我的解决方案不是很好。
LoginWidget 类
public class LoginWidget{
private Button loginButton;
private DialogBox dialogBox;
private TextBox tbxUser;
private PasswordTextBox tbxPw;
private Label lblUser;
private Label lblPW;
private Label lblError;
public LoginWidget(){
dialogBox = new DialogBox();
tbxUser = new TextBox();
tbxPw = new PasswordTextBox();
lblUser = new Label();
lblPW = new Label();
lblError = new Label();
dialogBox.setText("Login");
dialogBox.setAnimationEnabled(true);
loginButton = new Button("Login");
// set the id of a widget by accessing its Element
loginButton.getElement().setId("closeButton");
final HTML serverResponseLabel = new HTML();
VerticalPanel dialogVPanel = new VerticalPanel();
dialogVPanel.addStyleName("dialogVPanel");
dialogVPanel.add(lblUser);
lblUser.setText("User:");
dialogVPanel.add(tbxUser);
dialogVPanel.add(lblPW);
lblPW.setText("PW:");
dialogVPanel.add(tbxPw);
dialogVPanel.add(lblError);
dialogVPanel.add(serverResponseLabel);
dialogVPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_RIGHT);
dialogVPanel.add(loginButton);
dialogBox.setWidget(dialogVPanel);
dialogBox.show();
dialogBox.center();
}
public Button getLoginButton(){
return loginButton;
}
public DialogBox getDialogBox(){
return dialogBox;
}
public TextBox getTbxUser(){
return tbxUser;
}
public TextBox getTbxPw(){
return tbxPw;
}
public Label getLblError(){
return lblError;
}
}
LoginClickHandler 类
public class LoginClickHandler implements ClickHandler {
/**
*/
private LoginWidget lw;
private ServiceImplURL serviceImplURL;
private TimeTracking dtt = new TimeTracking();
public LoginClickHandler(ServiceImplURL sIU, LoginWidget _lw){
/**
*/
this.lw = _lw;
this.serviceImplURL = sIU;
}
public void onClick(ClickEvent event) {
/**
*/
serviceImplURL.getRpcLdap().authenticate(lw.getTbxPw().getText(), lw.getTbxUser().getText(), new AsyncCallback<Boolean>() {
/**
*/
@Override
public void onSuccess(Boolean isLdapAuthOk) {
/**
*/
if(isLdapAuthOk){
lw.getDialogBox().hide();
User user = new User(lw.getTbxUser().getText(), lw.getTbxPw().getText());
serviceImplURL.getRpcSession().setUsername(user.getUsername(), new AsyncCallback<Void>() {
@Override
public void onFailure(Throwable caught) {
// TODO Auto-generated method stub
}
@Override
public void onSuccess(Void result) {
// TODO Auto-generated method stub
}
});
serviceImplURL.getRpcDB().insertUser(user.getUsername(), new AsyncCallback<Void>() {
/**
*/
@Override
public void onFailure(Throwable caught) {
/*
* connection error to implement
*/
}
@Override
public void onSuccess(Void result) {
/*
* do nothing
*/
}
});
dtt.loadContent();
}
else{
lw.getLblError().setStyleName("error");
lw.getLblError().setText("Passwort oder Username falsch!");
}
}
@Override
public void onFailure(Throwable caught) {
// TODO Auto-generated method stub
}
});
}
}
我的入口点
@Override
public void onModuleLoad() {
/**
*/
loadLoginWidget();
}
/**
* Creates the login pop up.
*/
public void loadLoginWidget(){
/**
*/
LoginWidget lw = new LoginWidget();
LoginClickHandler lch = new LoginClickHandler(serviceImplURL, lw);
lw.getLoginButton().addClickHandler(lch);
}
我已经尝试过扩展 Button 但我不认为它有什么不同。