DoubleParameter.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 The Gridarta Developers.
 *
 * 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package net.sf.gridarta.plugin.parameter;

import net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import org.jetbrains.annotations.NotNull;

public class DoubleParameter<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> extends AbstractValuePluginParameter<G, A, R, Double> {

    @NotNull
    public static final String PARAMETER_TYPE = Double.class.getName();

    private double min;

    private double max = 1.0;

    public DoubleParameter() {
        super(0.0);
    }

    @NotNull
    @Override
    public <T> T visit(@NotNull final PluginParameterVisitor<G, A, R, T> visitor) {
        return visitor.visit(this);
    }

    @Override
    public boolean setStringValue(@NotNull final String stringValue) {
        final double doubleValue;
        try {
            doubleValue = Double.parseDouble(stringValue);
        } catch (final NumberFormatException ignored) {
            return false;
        }
        if (doubleValue < min) {
            return false;
        }
        if (doubleValue > max) {
            return false;
        }
        setValue(doubleValue);
        //noinspection FloatingPointEquality
        assert getValue() == doubleValue;
        return true;
    }

    @Override
    public void setValue(@NotNull final Double value) {
        super.setValue(Math.max(Math.min(value, max), min));
    }

    @NotNull
    @Override
    public String getParameterType() {
        return PARAMETER_TYPE;
    }

    @NotNull
    @Override
    public String getStringValue() {
        return getValue().toString();
    }

    public double getMax() {
        return max;
    }

    public void setMax(final double max) {
        final double newMax = Math.max(min, max);
        if (this.max == newMax) {
            return;
        }
        this.max = newMax;
        changed();
        if (getValue() > this.max) {
            setValue(this.max);
        }
    }

    public double getMin() {
        return min;
    }

    public void setMin(final double min) {
        final double newMin = Math.min(min, max);
        if (this.min == newMin) {
            return;
        }
        this.min = newMin;
        changed();
        if (getValue() < this.min) {
            setValue(this.min);
        }
    }

}