de.metas.procurement.webui.model.Trend.java Source code

Introduction

Here is the source code for de.metas.procurement.webui.model.Trend.java

Source

package de.metas.procurement.webui.model;

import java.math.BigDecimal;
import java.util.Map;

import com.google.gwt.thirdparty.guava.common.collect.ImmutableMap;
import com.vaadin.server.FontAwesome;
import com.vaadin.server.Resource;
import com.vaadin.ui.Component;

/*
 * #%L
 * de.metas.procurement.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%
 */

public enum Trend {
    UP("U", "trend-up", FontAwesome.ARROW_UP), DOWN("D", "trend-down", FontAwesome.ARROW_DOWN), EVEN("E",
            "trend-even", FontAwesome.ARROW_RIGHT), ZERO("Z", "trend-zero", FontAwesome.REMOVE)
    //
    ;

    private final String code;
    private final String cssStyleName;
    private final Resource icon;

    Trend(final String code, final String cssStyleName, final Resource icon) {
        this.code = code;
        this.cssStyleName = cssStyleName;
        this.icon = icon;
    }

    public String getCode() {
        return code;
    }

    public String getCssStyleName() {
        return cssStyleName;
    }

    public Resource getIcon() {
        return icon;
    }

    public static Trend forQtyAndTarget(final BigDecimal qty, final BigDecimal targetQty) {
        final int cmp = qty.compareTo(targetQty);
        if (cmp > 0) {
            return UP;
        } else if (cmp == 0) {
            return EVEN;
        } else {
            return DOWN;
        }
    }

    public static void applyStyleName(final Component comp, final Trend trend) {
        if (comp == null) {
            return;
        }

        for (final Trend t : values()) {
            comp.removeStyleName(t.getCssStyleName());
        }
        //
        if (trend != null) {
            comp.addStyleName(trend.getCssStyleName());
        }
    }

    private static final Map<String, Trend> code2value;
    static {
        final ImmutableMap.Builder<String, Trend> code2valueBuilder = ImmutableMap.builder();
        for (final Trend trend : values()) {
            code2valueBuilder.put(trend.getCode(), trend);
        }
        code2value = code2valueBuilder.build();
    }

    public static Trend ofCodeOrNull(final String code) {
        if (code == null) {
            return null;
        }
        return code2value.get(code);
    }
}