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package org.netbeans.html.json.impl;

import org.apidesign.html.json.spi.PropertyBinding;

import net.java.html.BrwsrCtx;

import org.netbeans.html.json.impl.PropertyBindingAccessor.FBData;

import org.netbeans.html.json.impl.PropertyBindingAccessor.PBData;

import org.apidesign.html.json.spi.FunctionBinding;

import org.apidesign.html.json.spi.Technology;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

public final class Bindings<Data> {

    private Data data;

    private final Technology<Data> bp;

    private Bindings(Technology<Data> bp) {

        this.bp = bp;

    }

    public <M> PropertyBinding registerProperty(String propName, M model, SetAndGet<M> access, boolean readOnly) {

        return PropertyBindingAccessor.create(new PBData<M>(this, propName, model, access, readOnly));

    }

    public <M> FunctionBinding registerFunction(String name, M model, Callback<M> access) {

        return PropertyBindingAccessor.createFunction(new FBData<M>(name, model, access));

    }

    public static Bindings<?> apply(BrwsrCtx c, Object model) {

        Technology<?> bp = JSON.findTechnology(c);

        return apply(bp);

    }

    private static <Data> Bindings<Data> apply(Technology<Data> bp) {

        return new Bindings<Data>(bp);

    }

    public final void finish(Object model, PropertyBinding[] propArr, FunctionBinding[] funcArr) {

        assert data == null;

        if (bp instanceof Technology.BatchInit) {

            Technology.BatchInit<Data> bi = (Technology.BatchInit<Data>)bp;

            data = bi.wrapModel(model, propArr, funcArr);

        } else {

            data = bp.wrapModel(model);

            for (PropertyBinding b : propArr) {

                bp.bind(b, model, data);

            }

            for (FunctionBinding b : funcArr) {

                bp.expose(b, model, data);

            }

        }

    }

    public Data koData() {

        return data;

    }

    public void valueHasMutated(String firstName) {

        bp.valueHasMutated(data, firstName);

    }

    public void applyBindings() {

        bp.applyBindings(data);

    }

    Object wrapArray(Object[] arr) {

        return bp.wrapArray(arr);

    }

}