Inceptum/launcher-gtk/src/main/java/io/gitlab/jfronny/inceptum/gtk/control/settings/SettingsTab.java

package io.gitlab.jfronny.inceptum.gtk.control.settings;

import io.gitlab.jfronny.commons.StringFormatter;
import io.gitlab.jfronny.inceptum.gtk.GtkEnvBackend;
import io.gitlab.jfronny.inceptum.gtk.control.ILabel;
import io.gitlab.jfronny.inceptum.gtk.control.settings.SettingsTab.SectionBuilder.Section;
import io.gitlab.jfronny.inceptum.gtk.util.I18n;
import org.gtk.gtk.*;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.PropertyKey;

import java.util.concurrent.atomic.AtomicInteger;

public class SettingsTab extends Box {
    protected final Window window;

    public SettingsTab(Window window) {
        super(Orientation.VERTICAL, 8);
        this.marginHorizontal = 24;
        this.marginTop = 12;
        this.window = window;
    }

    protected void section(@Nullable @PropertyKey(resourceBundle = I18n.BUNDLE) String title, SectionBuilder builder) {
        if (title != null) append(new ILabel(title, ILabel.Mode.HEADING));
        Frame frame = new Frame(null);
        ListBox listBox = new ListBox();
        listBox.selectionMode = SelectionMode.NONE;
        listBox.showSeparators = true;
        frame.child = listBox;
        AtomicInteger count = new AtomicInteger(0);
        builder.build(new Section() {
            @Override
            public IRow row(String title, @Nullable String subtitle, Object... args) {
                IRow row = new IRow(title, subtitle, args);
                row(row);
                return row;
            }

            @Override
            public ListBoxRow row(Widget row) {
                listBox.append(row);
                return listBox.getRowAtIndex(count.getAndIncrement());
            }

            @Override
            public void remove(Widget row) {
                listBox.remove(row);
                count.decrementAndGet();
            }

            @Override
            public void clear() {
                for (int i = 0, len = count.getAndSet(0); i < len; i++) {
                    listBox.remove(listBox.getRowAtIndex(0));
                }
            }
        });
        append(frame);
    }

    public interface SectionBuilder {
        void build(Section section);

        interface Section {
            IRow row(@PropertyKey(resourceBundle = I18n.BUNDLE) String title, @PropertyKey(resourceBundle = I18n.BUNDLE) @Nullable String subtitle, Object... args);
            ListBoxRow row(Widget row);
            void remove(Widget row);
            void clear();
        }
    }

    protected void showError(String message, Throwable t) {
        GtkEnvBackend.simpleDialog(
                window,
                StringFormatter.toString(t),
                message,
                MessageType.ERROR,
                ButtonsType.CLOSE,
                null,
                null
        );
    }
}