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 * The Original Software is NetBeans. The Initial Developer of the Original

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package org.netbeans.html.context.impl;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import net.java.html.BrwsrCtx;

import org.apidesign.html.context.spi.Contexts;

/** Implementation detail. Holds list of technologies for particular

 * {@link BrwsrCtx}.

 *

 * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 */

public final class CtxImpl {

    private final List<Bind<?>> techs;

    public CtxImpl() {

        techs = new ArrayList<Bind<?>>();

    }

    private CtxImpl(List<Bind<?>> techs) {

        this.techs = techs;

    }

    public static <Tech> Tech find(BrwsrCtx context, Class<Tech> technology) {

        CtxImpl impl = CtxAccssr.getDefault().find(context);

        for (Bind<?> bind : impl.techs) {

            if (technology == bind.clazz) {

                return technology.cast(bind.impl);

            }

        }

        return null;

    }

    public BrwsrCtx build() {

        Collections.sort(techs);

        final List<Bind<?>> arr = Collections.unmodifiableList(techs);

        CtxImpl impl = new CtxImpl(arr);

        BrwsrCtx ctx = CtxAccssr.getDefault().newContext(impl);

        return ctx;

    }

    public <Tech> void register(Class<Tech> type, Tech impl, int priority) {

        techs.add(new Bind<Tech>(type, impl, priority));

    }

    private static final class Bind<Tech> implements Comparable<Bind<?>> {

        private final Class<Tech> clazz;

        private final Tech impl;

        private final int priority;

        public Bind(Class<Tech> clazz, Tech impl, int priority) {

            this.clazz = clazz;

            this.impl = impl;

            this.priority = priority;

        }

        @Override

        public int compareTo(Bind<?> o) {

            if (priority != o.priority) {

                return priority - o.priority;

            }

            return clazz.getName().compareTo(o.clazz.getName());

        }

        @Override

        public String toString() {

            return "Bind{" + "clazz=" + clazz + "@" + clazz.getClassLoader() + ", impl=" + impl + ", priority=" + priority + '}';

        }

    }

}