de.metas.ui.web.vaadin.components.navigator.MFViewDisplay.java Source code

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Here is the source code for de.metas.ui.web.vaadin.components.navigator.MFViewDisplay.java

Source

package de.metas.ui.web.vaadin.components.navigator;

import java.util.List;

import com.google.common.base.Supplier;
import com.google.common.collect.ImmutableList;
import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
import com.vaadin.navigator.ViewDisplay;
import com.vaadin.server.FontAwesome;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

import de.metas.ui.web.vaadin.components.menu.MenuItemClickListener;
import de.metas.ui.web.vaadin.components.menu.MenuPanel;
import de.metas.ui.web.window.shared.menu.MenuItem;

/*
 * #%L
 * metasfresh-webui
 * %%
 * Copyright (C) 2016 metas GmbH
 * %%
 * 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 2 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
 * <http://www.gnu.org/licenses/gpl-2.0.html>.
 * #L%
 */

@SuppressWarnings("serial")
public class MFViewDisplay extends CustomComponent implements ViewDisplay {
    public static MFViewDisplay getMFViewDisplayOrNull(final ViewChangeEvent event) {
        final ViewDisplay viewDisplay = event.getNavigator().getDisplay();
        if (viewDisplay instanceof MFViewDisplay) {
            return (MFViewDisplay) viewDisplay;
        }
        return null;
    }

    static final String STYLE = "mf-window";

    private Label titleLabel;
    private final ViewContainer viewContainer;

    private MenuPanel menuPanel;

    public MFViewDisplay(final UI ui) {
        super();

        final VerticalLayout content = new VerticalLayout();
        content.addStyleName(STYLE);

        //
        // Lane: title
        {
            final Button icon = new Button();
            icon.setPrimaryStyleName(STYLE + "-title-icon");
            icon.setIcon(FontAwesome.BARS);
            icon.addClickListener(event -> toggleMenuPanel());

            titleLabel = new Label();
            titleLabel.setPrimaryStyleName(STYLE + "-title-text");

            final HorizontalLayout panel = new HorizontalLayout(icon, titleLabel);
            panel.addStyleName(STYLE + "-title-lane");
            content.addComponent(panel);
        }

        //
        // Lane: menu
        {
            menuPanel = new MenuPanel();
            menuPanel.setHiddenByStyle(false);

            content.addComponent(menuPanel);
        }

        viewContainer = new ViewContainer();
        content.addComponent(viewContainer);

        setCompositionRoot(content);

        ui.setContent(this);
    }

    @Override
    public void showView(final View view) {
        if (!(view instanceof Component)) {
            throw new IllegalArgumentException("View is not a component: " + view);
        }

        final Component viewComp = (Component) view;
        viewContainer.setContent(viewComp);

        setTitle("-");
        hideMenuPanel();
        setMenuItems(() -> ImmutableList.of());
    }

    private static final class ViewContainer extends CustomComponent {
        public ViewContainer() {
            super();
        }

        public void setContent(final Component content) {
            super.setCompositionRoot(content);
        }
    }

    public void setTitle(final String title) {
        titleLabel.setValue(title);
    }

    public void setMenuItemClickListener(final MenuItemClickListener clickListener) {
        menuPanel.setClickListener(clickListener);
    }

    public void setMenuItems(final Supplier<List<? extends MenuItem>> menuItemsSupplier) {
        menuPanel.setRootMenuItems(menuItemsSupplier);
    }

    private void toggleMenuPanel() {
        menuPanel.setHiddenByStyle(!menuPanel.isHiddenByStyle());
    }

    public void showMenuPanel() {
        menuPanel.setHiddenByStyle(false);
    }

    public void hideMenuPanel() {
        menuPanel.setHiddenByStyle(true);
    }

}