TestRoots/watchdog

package nl.tudelft.watchdog.eclipse.ui.wizards;

import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

/**
 * Base class for registration panels to create a WatchDog entity
 * and to inform the user of success or failure.
 */
abstract class RegistrationInputPanel extends Composite {

    private Button createNewUserButton;
    private Consumer<Boolean> callback;
    private List<Control> dynamicWidgets;
    /**
     * This container is not inserted by the constructor, because
     * the position inside the panel matters. Therefore, subclasses
     * MUST initialize this container themselves in the appropriate
     * location.
     */
    Composite inputContainer;

    public RegistrationInputPanel(Composite parent, Consumer<Boolean> callback) {
        super(parent, SWT.NONE);
        this.callback = callback;
        this.dynamicWidgets = new ArrayList<>();
    }

    void createButtonAndStatusContainer(String buttonText) {
        this.createNewUserButton = new Button(inputContainer, SWT.NONE);
        this.createNewUserButton.setText(buttonText);
        this.createNewUserButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

        this.createNewUserButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                for (Control child : dynamicWidgets) {
                    child.dispose();
                }
                dynamicWidgets.clear();

                callback.accept(registerAction());
            }
        });
    }

    void createFailureMessage(String message, Exception exception) {
        Label errorMessage = new Label(this.inputContainer, SWT.NONE);
        errorMessage.setText(message);
        this.dynamicWidgets.add(errorMessage);

        Composite exceptionContainer = new Composite(this, SWT.NONE);
        exceptionContainer.setLayout(RegistrationStep.createRowLayout(SWT.VERTICAL));
        this.dynamicWidgets.add(exceptionContainer);

        RegistrationStep.createErrorMessageLabel(exceptionContainer, exception);
    }

    void createSuccessIdOutput(String message, String label, String id) {
        Label successMessage = new Label(this.inputContainer, SWT.NONE);
        successMessage.setText(message);
        this.dynamicWidgets.add(successMessage);

        this.dynamicWidgets.add(new Label(this.inputContainer, SWT.NONE));

        this.createNewUserButton.setEnabled(false);

        Label idLabelComponent = new Label(this.inputContainer, SWT.NONE);
        idLabelComponent.setText(label);
        this.dynamicWidgets.add(idLabelComponent);

        Text userIdField = new Text(this.inputContainer, SWT.NONE);
        userIdField.setText(id);
        userIdField.setEditable(false);
        userIdField.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
        this.dynamicWidgets.add(userIdField);
    }

    abstract boolean registerAction();
}