de.symeda.sormas.ui.utils.AbstractView.java Source code

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Here is the source code for de.symeda.sormas.ui.utils.AbstractView.java

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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.utils;

import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
import com.vaadin.shared.ui.MarginInfo;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Component;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;

import de.symeda.sormas.api.BaseCriteria;
import de.symeda.sormas.api.i18n.I18nProperties;
import de.symeda.sormas.api.utils.DataHelper;

public abstract class AbstractView extends VerticalLayout implements View {

    private static final long serialVersionUID = -1L;

    protected final String viewName;
    private final HorizontalLayout viewHeader;
    private final Label viewTitleLabel;

    protected boolean applyingCriteria;

    protected AbstractView(String viewName) {
        this.viewName = viewName;

        setSizeFull();
        setMargin(false);
        setSpacing(false);

        viewHeader = new HorizontalLayout();
        viewHeader.setWidth(100, Unit.PERCENTAGE);
        viewHeader.setHeightUndefined();
        viewHeader.setMargin(new MarginInfo(false, true));
        viewHeader.setSpacing(true);
        CssStyles.style(viewHeader, "view-header");

        VerticalLayout viewTitleLayout = new VerticalLayout();
        {
            viewTitleLayout.setSizeUndefined();
            viewTitleLayout.setSpacing(false);
            viewTitleLayout.setMargin(false);

            // note: splitting title and subtitle into labels does not work with the css
            String viewTitle = I18nProperties.getPrefixCaption("View", viewName.replaceAll("/", "."));
            String viewSubTitle = I18nProperties.getPrefixCaption("View", viewName.replaceAll("/", ".") + ".sub",
                    "");
            viewTitleLabel = new Label(viewTitle);
            viewTitleLabel.setSizeUndefined();
            CssStyles.style(viewTitleLabel, CssStyles.H1, CssStyles.VSPACE_NONE);
            viewTitleLayout.addComponent(viewTitleLabel);
            Label viewSubTitleLabel = new Label(viewSubTitle);
            viewSubTitleLabel.setSizeUndefined();
            CssStyles.style(viewSubTitleLabel, CssStyles.H4, CssStyles.VSPACE_TOP_NONE);
            viewTitleLayout.addComponent(viewSubTitleLabel);
        }
        viewHeader.addComponent(viewTitleLayout);
        viewHeader.setExpandRatio(viewTitleLayout, 1);

        addComponent(viewHeader);
        setExpandRatio(viewHeader, 0);
    }

    protected void addHeaderComponent(Component c) {
        viewHeader.addComponent(c);
        viewHeader.setComponentAlignment(c, Alignment.MIDDLE_RIGHT);
    }

    @Override
    public void addComponent(Component c) {
        super.addComponent(c);
        // set expansion to 1 by default
        setExpandRatio(c, 1);
    }

    @Override
    public abstract void enter(ViewChangeEvent event);

    public Label getViewTitleLabel() {
        return viewTitleLabel;
    }

    public void navigateTo(BaseCriteria criteria) {
        if (applyingCriteria) {
            return;
        }
        applyingCriteria = true;

        String state = getUI().getNavigator().getState();
        int paramsIndex = state.lastIndexOf('?');
        if (paramsIndex >= 0) {
            state = state.substring(0, paramsIndex);
        }
        if (state.charAt(state.length() - 1) != '/')
            state += "/";
        if (criteria != null) {
            String params = criteria.toUrlParams();
            if (!DataHelper.isNullOrEmpty(params)) {
                state += "?" + params;
            }
        }

        getUI().getNavigator().navigateTo(state);

        applyingCriteria = false;
    }

    public void setApplyingCriteria(boolean applyingCriteria) {
        this.applyingCriteria = applyingCriteria;
    }
}