AskCredentialsDialogImpl.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.user;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.PasswordTextBox;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;

import org.eclipse.che.api.promises.client.Promise;
import org.eclipse.che.ide.CoreLocalizationConstant;
import org.eclipse.che.ide.api.user.AskCredentialsDialog;
import org.eclipse.che.ide.api.user.Credentials;
import org.eclipse.che.ide.ui.window.Window;

import static org.eclipse.che.api.promises.client.callback.AsyncPromiseHelper.createFromAsyncRequest;
import static org.eclipse.che.ide.util.StringUtils.isNullOrEmpty;

/**
 * Implementation of {@link AskCredentialsDialog}.
 *
 * @author Igor Vinokur
 */
public class AskCredentialsDialogImpl extends Window implements AskCredentialsDialog {


    private CoreLocalizationConstant localizationConstant;

    interface AskAuthenticatorImplUiBinder extends UiBinder<Widget, AskCredentialsDialogImpl> {
    }
    private static AskAuthenticatorImplUiBinder uiBinder = GWT.create(AskAuthenticatorImplUiBinder.class);


    private AsyncCallback<Credentials> callback;

    @UiField
    TextBox         usernameTextBox;
    @UiField
    PasswordTextBox passwordTextBox;

    private final Button authenticateButton;


    @Inject
    public AskCredentialsDialogImpl(CoreLocalizationConstant localizationConstant) {
        this.localizationConstant = localizationConstant;
        this.setWidget(uiBinder.createAndBindUi(this));
        this.setTitle(localizationConstant.authorizationDialogTitle());
        authenticateButton = createPrimaryButton(localizationConstant.authenticationDialogAuthenticate(),
                                                 "authentication-dialog-authenticate-button",
                                                 event -> onAuthenticateClicked());
        Button cancelButton = createButton(localizationConstant.cancel(),
                                           "authentication-dialog-cancel-button",
                                           event -> onCancelClicked());

        addButtonToFooter(authenticateButton);
        addButtonToFooter(cancelButton);
    }

    @Override
    public Promise<Credentials> askCredentials() {
        cleanCredentials();
        showDialog();
        return createFromAsyncRequest(callback1 -> AskCredentialsDialogImpl.this.callback = callback1);
    }


    public void onCancelClicked() {
        callback.onFailure(new Exception(localizationConstant.authenticationDialogRejectedByUser()));
        closeDialog();
    }


    public void onAuthenticateClicked() {
        callback.onSuccess(new Credentials(getUsername(), getPassword()));
        closeDialog();
    }

    public void onCredentialsChanged() {
        setEnabledAuthenticateButton(!isNullOrEmpty(getUsername()) && !isNullOrEmpty(getPassword()));
    }



    public void showDialog() {
        super.show();
    }


    public void closeDialog() {
        super.hide();
    }


    public String getUsername() {
        return usernameTextBox.getText();
    }


    public String getPassword() {
        return passwordTextBox.getText();
    }


    public void cleanCredentials() {
        usernameTextBox.setText("");
        passwordTextBox.setText("");
        setEnabledAuthenticateButton(false);
    }

    @UiHandler({"usernameTextBox", "passwordTextBox"})
    void credentialChangeHandler(KeyUpEvent event) {
        onCredentialsChanged();
    }

    public void setEnabledAuthenticateButton(boolean enabled) {
        authenticateButton.setEnabled(enabled);
    }

}