de.symeda.sormas.ui.user.UsersView.java Source code

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/*******************************************************************************
 * SORMAS - Surveillance Outbreak Response Management & Analysis System
 * Copyright  2016-2018 Helmholtz-Zentrum fr Infektionsforschung GmbH (HZI)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *******************************************************************************/
package de.symeda.sormas.ui.user;

import com.vaadin.icons.VaadinIcons;
import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
import com.vaadin.ui.Button;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.ValoTheme;
import com.vaadin.v7.ui.ComboBox;
import com.vaadin.v7.ui.TextField;

import de.symeda.sormas.api.i18n.Captions;
import de.symeda.sormas.api.i18n.I18nProperties;
import de.symeda.sormas.api.i18n.Strings;
import de.symeda.sormas.api.user.UserCriteria;
import de.symeda.sormas.api.user.UserDto;
import de.symeda.sormas.api.user.UserRight;
import de.symeda.sormas.api.user.UserRole;
import de.symeda.sormas.ui.ControllerProvider;
import de.symeda.sormas.ui.UserProvider;
import de.symeda.sormas.ui.ViewModelProviders;
import de.symeda.sormas.ui.utils.AbstractView;
import de.symeda.sormas.ui.utils.CssStyles;

/**
 * A view for performing create-read-update-delete operations on products.
 *
 * See also {@link UserController} for fetching the data, the actual CRUD
 * operations and controlling the view based on events from outside.
 */
public class UsersView extends AbstractView {

    private static final long serialVersionUID = -3533557348144005469L;

    public static final String VIEW_NAME = "users";
    public static final String ACTIVE_FILTER = I18nProperties.getString(Strings.active);
    public static final String INACTIVE_FILTER = I18nProperties.getString(Strings.inactive);

    private UserCriteria criteria;

    private UserGrid grid;
    private Button createButton;

    private VerticalLayout gridLayout;

    // Filters
    private ComboBox activeFilter;
    private ComboBox userRolesFilter;
    private TextField searchField;

    public UsersView() {
        super(VIEW_NAME);

        criteria = ViewModelProviders.of(UsersView.class).get(UserCriteria.class);

        grid = new UserGrid();
        grid.setCriteria(criteria);
        gridLayout = new VerticalLayout();
        gridLayout.addComponent(createFilterBar());
        gridLayout.addComponent(grid);
        gridLayout.setMargin(true);
        gridLayout.setSpacing(false);
        gridLayout.setSizeFull();
        gridLayout.setExpandRatio(grid, 1);
        gridLayout.setStyleName("crud-main-layout");

        addComponent(gridLayout);

        if (UserProvider.getCurrent().hasUserRight(UserRight.USER_CREATE)) {
            createButton = new Button(I18nProperties.getCaption(Captions.userNewUser));
            createButton.addStyleName(ValoTheme.BUTTON_PRIMARY);
            createButton.setIcon(VaadinIcons.PLUS_CIRCLE);
            createButton.addClickListener(e -> ControllerProvider.getUserController().create());
            addHeaderComponent(createButton);
        }
    }

    public HorizontalLayout createFilterBar() {
        HorizontalLayout filterLayout = new HorizontalLayout();
        filterLayout.setMargin(false);
        filterLayout.setSpacing(true);
        filterLayout.setSizeUndefined();
        filterLayout.addStyleName(CssStyles.VSPACE_3);

        activeFilter = new ComboBox();
        activeFilter.setWidth(200, Unit.PIXELS);
        activeFilter.setInputPrompt(I18nProperties.getPrefixCaption(UserDto.I18N_PREFIX, UserDto.ACTIVE));
        activeFilter.addItems(ACTIVE_FILTER, INACTIVE_FILTER);
        activeFilter.addValueChangeListener(e -> {
            criteria.active(ACTIVE_FILTER.equals(e.getProperty().getValue()) ? Boolean.TRUE
                    : INACTIVE_FILTER.equals(e.getProperty().getValue()) ? Boolean.FALSE : null);
            navigateTo(criteria);
        });
        filterLayout.addComponent(activeFilter);

        userRolesFilter = new ComboBox();
        userRolesFilter.setWidth(200, Unit.PIXELS);
        userRolesFilter.setInputPrompt(I18nProperties.getPrefixCaption(UserDto.I18N_PREFIX, UserDto.USER_ROLES));
        userRolesFilter.addItems(UserRole.getAssignableRoles(UserProvider.getCurrent().getUserRoles()));
        userRolesFilter.addValueChangeListener(e -> {
            criteria.userRole((UserRole) e.getProperty().getValue());
            navigateTo(criteria);
        });
        filterLayout.addComponent(userRolesFilter);

        searchField = new TextField();
        searchField.setWidth(200, Unit.PIXELS);
        searchField.setNullRepresentation("");
        searchField.setInputPrompt(I18nProperties.getString(Strings.promptUserSearch));
        searchField.setImmediate(true);
        searchField.addTextChangeListener(e -> {
            criteria.freeText(e.getText());
            grid.reload();
        });
        filterLayout.addComponent(searchField);

        return filterLayout;
    }

    @Override
    public void enter(ViewChangeEvent event) {
        if (event != null) {
            String params = event.getParameters().trim();
            if (params.startsWith("?")) {
                params = params.substring(1);
                criteria.fromUrlParams(params);
            }
            updateFilterComponents();
        }
        grid.reload();
    }

    public void updateFilterComponents() {
        applyingCriteria = true;

        activeFilter.setValue(
                criteria.getActive() == null ? null : criteria.getActive() ? ACTIVE_FILTER : INACTIVE_FILTER);
        userRolesFilter.setValue(criteria.getUserRole());
        searchField.setValue(criteria.getFreeText());

        applyingCriteria = false;
    }
}