D-Net

package eu.dnetlib.repo.manager.client.widgets.wizard;

import com.google.gwt.core.client.GWT;

import com.google.gwt.dom.client.Document;

import com.google.gwt.user.client.Window;

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

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

import eu.dnetlib.gwt.client.help.HelpService;

import eu.dnetlib.gwt.client.help.HelpServiceAsync;

import eu.dnetlib.repo.manager.client.AbstractRepositoryManagerWidget;

import eu.dnetlib.repo.manager.client.HelpCallback;

import eu.dnetlib.repo.manager.client.RepositoryManagerWidget;

import eu.dnetlib.repo.manager.shared.WizardState;

import org.gwtbootstrap3.client.ui.Alert;

import org.gwtbootstrap3.client.ui.constants.AlertType;

import java.util.ArrayList;

import java.util.List;

/**

 * Created by stefania on 12/17/15.

 */

public class WizardWidget extends AbstractRepositoryManagerWidget implements RepositoryManagerWidget {

    private String parentToken = "";

    private String token = "";

    private FlowPanel wizardPanel = new FlowPanel();

    protected Alert errorLabel = new Alert();

    private BreadcrumbWidget breadcrumbWidget;

    private FlowPanel wizardStepPanel = new FlowPanel();

    protected FlowPanel innerWizardContentPanel = new FlowPanel();

    private NavigationWidget navigationWidget = new NavigationWidget();

    private List<WizardStepWidget> wizardStepWidgets = new ArrayList<WizardStepWidget>();

    protected WizardState wizardState;

    protected int currentActiveStep = 0;

    protected int newActiveStep = 0;

    private static HelpServiceAsync helpService = GWT.create(HelpService.class);

    protected WizardWidget(final List<WizardStepWidget> wizardStepWidgets, WizardState wizardState, String title) {

        this.wizardState = wizardState;

        HTML titleHTML = new HTML("<h1 class=\"uk-article-title\">" + title + "</h1>");

        titleHTML.addStyleName("uk-margin-medium-bottom");

        contentPanel.add(titleHTML);

//        errorLabel.addStyleName("alertLabel");

        errorLabel.setType(AlertType.DANGER);

        errorLabel.setVisible(false);

        errorLabel.setDismissable(false);

        this.wizardStepWidgets.addAll(wizardStepWidgets);

        final List<String> wizardStepNames = new ArrayList<String>();

        for(WizardStepWidget wizardStepWidget : wizardStepWidgets) {

            wizardStepNames.add(wizardStepWidget.getTitle());

        }

        breadcrumbWidget = new BreadcrumbWidget(wizardStepNames);

        wizardPanel.addStyleName("wizard");

        wizardPanel.add(breadcrumbWidget.asWidget());

        wizardPanel.add(wizardStepPanel);

        wizardPanel.add(navigationWidget.asWidget());

        contentPanel.add(wizardPanel);

        wizardStepPanel.addStyleName("content");

        wizardStepPanel.add(errorLabel);

        wizardStepPanel.add(innerWizardContentPanel);

        NavigationWidget.NextButtonListener nextButtonListener =

                new NavigationWidget.NextButtonListener() {

            @Override

            public void nextClicked(int newActiveStep) {

                errorLabel.setVisible(false);

                WizardWidget.this.newActiveStep = newActiveStep;

                Window.scrollTo(0, 0);

                wizardStepWidgets.get(currentActiveStep).completeStep();

            }

        };

        navigationWidget.setNextButtonListener(nextButtonListener);

        NavigationWidget.BackButtonListener backButtonListener =

                new NavigationWidget.BackButtonListener() {

            @Override

            public void backClicked(int newActiveStep) {

                errorLabel.setVisible(false);

                setActiveStep(newActiveStep);

            }

        };

        navigationWidget.setBackButtonListener(backButtonListener);

    }

    protected void setActiveStep(int stepNumber) {

        loadAppropriateHelp(wizardStepWidgets.get(stepNumber).getId());

        currentActiveStep = stepNumber;

        breadcrumbWidget.setActiveStep(stepNumber);

        navigationWidget.setActiveStep(stepNumber);

        if(stepNumber==wizardStepWidgets.size()-1)

            navigationWidget.hideNavigationButtons();

        if(stepNumber==wizardStepWidgets.size()-2) {

            navigationWidget.setNextButtonText("Finish");

        } else {

            navigationWidget.setNextButtonText("Next");

        }

        innerWizardContentPanel.clear();

        Window.scrollTo(0, 0);

        wizardStepWidgets.get(stepNumber).clear();

        wizardStepWidgets.get(stepNumber).loadContent(wizardState);

        innerWizardContentPanel.add(wizardStepWidgets.get(currentActiveStep).asWidget());

    }

    private void loadAppropriateHelp(String stepId) {

        gridPanel.remove(helpPanel);

        helpService.getHelpById(parentToken + "_" + stepId, new HelpCallback(helpPanel, gridPanel));

    }

    @Override

    public void clear() {

    }

    @Override

    public void reload() {

        Document.get().getElementById("headerNoTransparent").removeClassName("tm-header-transparent");

        setActiveStep(currentActiveStep);

    }

    @Override

    public void setToken(String parentToken, String rest) {

        this.parentToken = parentToken;

        this.token = rest;

    }

    @Override

    public void afterAdditionToRootPanel() {

    }

}