Subversion Repositories SmartDukaan

package in.shop2020.catalog.dashboard.client;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.user.client.ui.Button;

import com.google.gwt.user.client.ui.Composite;

import com.google.gwt.user.client.ui.HorizontalPanel;

import com.google.gwt.user.client.ui.Label;

import com.google.gwt.user.client.ui.PasswordTextBox;

import com.google.gwt.user.client.ui.TextBox;

import com.google.gwt.user.client.ui.VerticalPanel;

/**

 * Login screen for the catalog dashboard. 

 * <p>In EntryPoint class CatalogDashboard.java, LoginScreen is initialised and added to the root panel.

 * If authentication is successful, root panel is cleared and dashboard widgets are added to the root panel.

 */

public class LoginScreen extends Composite {

    private Label errLabel = new Label("");

    private Label headerMessage = new Label("Please key in your credentials");

    private Label userLabel = new Label("Username");

    private Label passwordLabel = new Label("Password");

    private TextBox userTextBox = new TextBox();

    private PasswordTextBox passwordTextBox = new PasswordTextBox();

    private Button submitButton = new Button("Login");

    interface LoginListener {

        void onLoginPressed(String username, String password);

    }

    private LoginListener loginListener;

    public LoginScreen(){

        //errLabel.setVisible(false);

        VerticalPanel vertPanel = new VerticalPanel();

        vertPanel.setSpacing(5);

        HorizontalPanel horizontalPanel = new HorizontalPanel();

        horizontalPanel.setSpacing(5);

        vertPanel.add(headerMessage);

        vertPanel.add(errLabel);

        vertPanel.add(horizontalPanel);

        horizontalPanel.add(userLabel);

        horizontalPanel.add(userTextBox);

        horizontalPanel.setCellWidth(horizontalPanel.getWidget(0), "128px");

        horizontalPanel.setCellWidth(horizontalPanel.getWidget(1), "128px");

        vertPanel.setCellHeight(vertPanel.getWidget(0), "10px");

        vertPanel.setCellHeight(vertPanel.getWidget(1), "10px");

        vertPanel.setCellHeight(vertPanel.getWidget(2), "10px");

        horizontalPanel = new HorizontalPanel();

        horizontalPanel.setSpacing(5);

        vertPanel.add(horizontalPanel);

        horizontalPanel.add(passwordLabel);

        horizontalPanel.add(passwordTextBox);

        horizontalPanel.setCellWidth(horizontalPanel.getWidget(0), "128px");

        horizontalPanel.setCellWidth(horizontalPanel.getWidget(1), "128px");

        vertPanel.setCellHeight(vertPanel.getWidget(3), "10px");

        vertPanel.add(submitButton);

        vertPanel.setStyleName("centerBox");

        submitButton.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent event) {

                loginListener.onLoginPressed(userTextBox.getText(), passwordTextBox.getText());

            }

        });

        initWidget(vertPanel);

    }

    public void setLoginListener(LoginListener loginListener) {

        this.loginListener = loginListener;

    }

    public void setErrorText(String errorMessage) {

        errLabel.setText(errorMessage);

    }

    public void clearFields() {

        userTextBox.setText("");

        passwordTextBox.setText("");

    }

}