org.jcf.graphicMessage.GraphicObjectFactory.java Source code

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Here is the source code for org.jcf.graphicMessage.GraphicObjectFactory.java

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/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jcf.graphicMessage;

import java.util.List;

import org.jcf.JCFException;
import org.springframework.util.Assert;

/**
 * factory for creating graphic objects
 * @author FaKod
 *
 */
public abstract class GraphicObjectFactory {

    /**
     * created object based on type of given go
     * @param go given GeographicObject
     * @param nikName nikanme to use
     * @param room room name to use
     * @param locs list of locations
     * @return copy of geographic object with new id
     */
    public static GraphicObject create(GraphicObject go, String nikName, String room, List<Location> locs) {
        Assert.notNull(go);
        Assert.hasLength(nikName);
        Assert.hasLength(room);
        Assert.notNull(locs);

        if (go instanceof Point) {
            return createPoint(nikName, room, locs.get(0));
        }
        if (go instanceof Line) {
            return createLine(nikName, room, locs);
        }
        if (go instanceof Polygon) {
            return createPolygon(nikName, room, locs);
        }
        if (go instanceof Text) {
            Text t = (Text) go;
            return createText(nikName, room, t.getText(), locs.get(0));
        }
        throw new JCFException("Unsupported GraphicObject");
    }

    /**
     * creating new PointImpl object with new id and new Location
     * @param nikName Nikname inside room
     * @param room name of the room
     * @param loc Location instance
     * @return new created PointImpl object
     */
    public static Point createPoint(String nikName, String room, Location loc) {
        Assert.hasLength(nikName);
        Assert.hasLength(room);
        Assert.notNull(loc);

        Id id = IdFactory.getNextId(room, nikName);
        Point p = new PointImpl(id);
        p.addLocation(loc);
        return p;
    }

    /**
     * creating new LineImpl object with new id and a list of locations
     * @param nikName Nikname inside room
     * @param room name of the room
     * @param locs Location instance
     * @return new created LineImpl object
     */
    public static Line createLine(String nikName, String room, List<Location> locs) {
        Assert.hasLength(nikName);
        Assert.hasLength(room);
        Assert.notNull(locs);

        Id id = IdFactory.getNextId(room, nikName);
        Line l = new LineImpl(id);
        l.addAllLocation(locs);
        return l;
    }

    /**
     * creating new PolygonImpl object with new id and a list of locations
     * @param nikName Nikname inside room
     * @param room name of the room
     * @param locs Location instance
     * @return new created PolygonImpl object
     */
    public static Polygon createPolygon(String nikName, String room, List<Location> locs) {
        Assert.hasLength(nikName);
        Assert.hasLength(room);
        Assert.notNull(locs);

        Id id = IdFactory.getNextId(room, nikName);
        Polygon p = new PolygonImpl(id);
        p.addAllLocation(locs);
        return p;
    }

    /**
     * creating new TextImpl object with new id and a list of locations
     * @param nikName Nikname inside room
     * @param room name of the room
     * @param text text to diplay
     * @param loc Locatio of text
     * @return created Text Object
     */
    public static Text createText(String nikName, String room, String text, Location loc) {
        Assert.hasLength(nikName);
        Assert.hasLength(room);
        Assert.hasLength(text);
        Assert.notNull(loc);

        Id id = IdFactory.getNextId(room, nikName);
        Text p = new TextImpl(id);
        p.addLocation(loc);
        p.setText(text);
        return p;
    }
}