/*

 * The contents of this file are subject to the terms of the Common Development

 * and Distribution License (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.html

 * or http://www.netbeans.org/cddl.txt.

 * 

 * When distributing Covered Code, include this CDDL Header Notice in each file

 * and include the License file at http://www.netbeans.org/cddl.txt.

 * If applicable, add the following below the CDDL Header, with the fields

 * enclosed by brackets [] replaced by your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 * 

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

 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun

 * Microsystems, Inc. All Rights Reserved.

 */

package org.netbeans.modules.bpel.search;

import java.awt.Color;

import java.awt.Font;

import java.util.ArrayList;

import java.util.List;

import org.netbeans.modules.bpel.model.api.BpelEntity;

import org.netbeans.modules.bpel.design.DesignView;

import org.netbeans.modules.bpel.design.decoration.Decoration;

import org.netbeans.modules.bpel.design.decoration.DecorationProvider;

import org.netbeans.modules.bpel.design.decoration.DecorationProviderFactory;

import org.netbeans.modules.bpel.design.decoration.GlowDescriptor;

import org.netbeans.modules.bpel.design.decoration.LabelStyleDescriptor;

import org.netbeans.modules.bpel.design.model.elements.VisualElement;

/**

 * @author Vladimir Yaroslavskiy

 * @version 2006.12.06

 */

public final class Decorator extends DecorationProvider implements DecorationProviderFactory {

    public Decorator() {}

    public DecorationProvider createInstance(DesignView view) {

        return new Decorator(view);

    }

    private Decorator(DesignView view) {

        super(view);

        myHighlightedEntities = new ArrayList<BpelEntity>();

    }

    @Override

    public Decoration getDecoration(BpelEntity entity) {

        if ( !myIsClearSelection && mySelectedEntity == entity) {

            return new Decoration(new LabelStyleDescriptor(new Color(0x339900), element, Font.BOLD)); // glow

        }

        if ( !myIsClearHighlighting && myHighlightedEntities.contains(entity)) {

            return new Decoration(new GlowDescriptor(new Color(255, 255, 0), 20.0)); // highlight

        }

        return null;

    }

    @Override

    public void release() {

        mySelectedEntity = null;

        myHighlightedEntities = null;

    }

    void select(BpelEntity entity, VisualElement findedElement) {

        if (mySelectedEntity != null) {

            myIsClearSelection = true;

        }

        myIsClearSelection = false;

        mySelectedEntity = entity;

        element = findedElement;

        fireDecorationChanged();

    }

    void clearHighlighting() {

        myIsClearHighlighting = true;

        myIsClearSelection = true;

        fireDecorationChanged();

        myHighlightedEntities = new ArrayList<BpelEntity>();

        myIsClearHighlighting = false;

        myIsClearSelection = false;

    }

    void doHighlight(BpelEntity entity, boolean highlighted) {

        if (highlighted) {

            myHighlightedEntities.add(entity);

        } else {

            myHighlightedEntities.remove(entity);

        }

        myIsClearSelection = !highlighted;

        fireDecorationChanged();

    }

    static Decorator getDecorator(DesignView view) {

        List<DecorationProvider> providers = view.getDecorationManager().getProviders();

        for (DecorationProvider provider : providers) {

            if (provider instanceof Decorator) {

                return (Decorator) provider;

            }

        }

        return null;

    }

    private VisualElement element;

    private boolean myIsClearSelection;

    private boolean myIsClearHighlighting;

    private BpelEntity mySelectedEntity;

    private List<BpelEntity> myHighlightedEntities;

}