/*
 * Copyright 2014-2016 Cel Skeggs
 *
 * This file is part of the CCRE, the Common Chicken Runtime Engine.
 *
 * The CCRE is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 *
 * The CCRE 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the CCRE.  If not, see <http://www.gnu.org/licenses/>.
 */
package ccre.supercanvas.components.palette;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;

import ccre.supercanvas.SuperCanvasComponent;

/**
 * A top-level palette, which means that it contains important components that
 * the user might want to always be able to instantiate regardless of context.
 *
 * @author skeggsc
 */
public class TopLevelPaletteComponent extends PaletteComponent<Iterable<PaletteEntry>> {

    private static final long serialVersionUID = -1847428594657030363L;

    private static Iterable<PaletteEntry> wrapAll(Class<? extends SuperCanvasComponent>[] classes) {
        ArrayList<PaletteEntry> local = new ArrayList<>();
        for (Class<? extends SuperCanvasComponent> class_ : classes) {
            local.add(new AllocationPaletteEntry(class_));
        }
        return local;
    }

    /**
     * Creates a new TopLevelPaletteComponent.
     *
     * @param x the X-coordinate.
     * @param y the Y-coordinate.
     * @param classes the SuperCanvasComponent classes to include.
     */
    @SafeVarargs
    public TopLevelPaletteComponent(int x, int y, Class<? extends SuperCanvasComponent>... classes) {
        super(x, y, wrapAll(classes));
    }

    private static class AllocationPaletteEntry implements PaletteEntry {

        private static final long serialVersionUID = 1218570206587433276L;
        final Class<? extends SuperCanvasComponent> aClass;

        AllocationPaletteEntry(Class<? extends SuperCanvasComponent> aClass) {
            this.aClass = aClass;
        }

        @Override
        public String getName() {
            return aClass.getSimpleName();
        }

        @Override
        public SuperCanvasComponent fetch(int x, int y) {
            try {
                return aClass.getConstructor(Integer.TYPE, Integer.TYPE).newInstance(x, y);
            } catch (NoSuchMethodException ex) {
                throw new RuntimeException(ex);
            } catch (InstantiationException ex) {
                throw new RuntimeException(ex);
            } catch (IllegalAccessException ex) {
                throw new RuntimeException(ex);
            } catch (InvocationTargetException ex) {
                throw new RuntimeException(ex);
            }
        }
    }
}