/**

 * Back 2 Browser Bytecode Translator Copyright (C) 2012 Jaroslav Tulach

 * <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation, version 2 of the License.

 *

 * This program 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 General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program. Look for COPYING file in the top folder. If not, see

 * http://opensource.org/licenses/GPL-2.0.

 */

package net.java.html.canvas;

import java.util.Objects;

/**

 * Image represents an Image Resource defined by a path.

 *

 * @author antonepple

 */

public class Image {

    private String src;

    private Object cached;

    private int cacheHash;

    Image(String src) {

        this.src = src;

    }

    void cache(Object toCache) {

        cacheHash = hashCode();

        this.cached = toCache;

    }

    private boolean isCached() {

        return cacheHash == hashCode();

    }

    Object getCached() {

        return isCached() ? cached : null;

    }

    public String getSrc() {

        return src;

    }

    @Override

    public int hashCode() {

        int hash = 7;

        hash = 59 * hash + Objects.hashCode(this.src) ^ (cached==null? 1231 : 1237);

        return hash;

    }

    @Override

    public boolean equals(Object obj) {

        if (obj == null) {

            return false;

        }

        if (getClass() != obj.getClass()) {

            return false;

        }

        final Image other = (Image) obj;

        if (!Objects.equals(this.src, other.src)) {

            return false;

        }

        if ((cached==null) != (other.getCached()==null)){

            return false;

        }

        return true;

    }

}