com.netopyr.reduxfx.vscenegraph.property.VProperty Maven / Gradle / Ivy

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package com.netopyr.reduxfx.vscenegraph.property;

import io.vavr.control.Option;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

public final class VProperty {

    public enum Phase {STRUCTURE, HIDE_STAGE, DEFAULT, SHOW_STAGE}

    private final Phase phase;
    private final boolean isValueDefined;
    private final Object value;
    private final Option changeListener;
    private final Option invalidationListener;

    public VProperty(Phase phase,
                     Object value,
                     Option changeListener,
                     Option invalidationListener) {
        this.phase = phase;
        this.isValueDefined = true;
        this.value = value;
        this.changeListener = changeListener;
        this.invalidationListener = invalidationListener;
    }

    public VProperty(Phase phase,
                     Option changeListener,
                     Option invalidationListener) {
        this.phase = phase;
        this.isValueDefined = false;
        this.value = null;
        this.changeListener = changeListener;
        this.invalidationListener = invalidationListener;
    }

    public Phase getPhase() {
        return phase;
    }

    public boolean isValueDefined() {
        return isValueDefined;
    }

    public Object getValue() {
        if (!isValueDefined) {
            throw new IllegalStateException("No value defined");
        }
        return value;
    }

    public Option getChangeListener() {
        return changeListener;
    }

    public Option getInvalidationListener() {
        return invalidationListener;
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
                .append("phase", phase)
                .append("isValueDefined", isValueDefined)
                .append("value", value)
                .append("changeListener", changeListener.stringPrefix())
                .append("invalidationListener", invalidationListener.stringPrefix())
                .toString();
    }
}