/**

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

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 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

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 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

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 * License Header, with the fields enclosed by brackets [] replaced by

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 *

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

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package org.netbeans.html.json.impl;

import java.util.logging.Level;

import java.util.logging.Logger;

import net.java.html.BrwsrCtx;

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

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

import org.netbeans.html.json.spi.Proto;

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

/**

 *

 * @author Jaroslav Tulach

 */

public final class Bindings<Data> {

    private static final Logger LOG = Logger.getLogger(Bindings.class.getName()); 

    private Data data;

    private final Technology<Data> bp;

    private Bindings(Technology<Data> bp) {

        this.bp = bp;

    }

    public <M> PropertyBinding registerProperty(String propName, int index, M model, Proto.Type<M> access, byte propertyType) {

        return PropertyBindingAccessor.create(access, this, propName, index, model, propertyType);

    }

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

        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, Object copyFrom, PropertyBinding[] propArr, FunctionBinding[] funcArr) {

        assert data == null;

        if (bp instanceof Technology.BatchCopy) {

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

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

        } else 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, Object oldValue, Object newValue) {

        if (bp instanceof Technology.ValueMutated) {

            Technology.ValueMutated<Data> vm = (Technology.ValueMutated<Data>)bp;

            Object ov = JSON.find(oldValue, this);

            Object nv = JSON.find(newValue, this);

            vm.valueHasMutated(data, firstName, ov, nv);

        } else {

            bp.valueHasMutated(data, firstName);

        }

    }

    public void applyBindings(String id) {

        if (bp instanceof Technology.ApplyId) {

            Technology.ApplyId<Data> ai = (Technology.ApplyId<Data>) bp;

            ai.applyBindings(id, data);

            return;

        }

        if (id != null) {

            LOG.log(Level.WARNING, 

                "Technology {0} does not implement ApplyId extension. Can't apply to {1}. Applying globally.", 

                new Object[]{bp, id}

            );

        }

        bp.applyBindings(data);

    }

    Object wrapArray(Object[] arr) {

        return bp.wrapArray(arr);

    }

}