Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * 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; either version 2

 * of the License, or (at your option) any later version.

 *

 * 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; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.fmap.layers;

import java.awt.image.BufferedImage;

import java.util.ArrayList;

import java.util.Hashtable;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import javax.swing.ImageIcon;

import org.apache.log4j.Logger;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.gvsig.exceptions.BaseException;

import com.hardcode.gdbms.engine.data.driver.DriverException;

import com.iver.cit.gvsig.exceptions.layers.LoadLayerException;

import com.iver.cit.gvsig.exceptions.layers.ReloadLayerException;

import com.iver.cit.gvsig.exceptions.layers.StartEditionLayerException;

import com.iver.cit.gvsig.fmap.MapContext;

import com.iver.cit.gvsig.fmap.crs.CRSFactory;

import com.iver.cit.gvsig.fmap.drivers.DriverIOException;

import com.iver.cit.gvsig.fmap.layers.layerOperations.ComposedLayer;

import com.iver.cit.gvsig.fmap.operations.strategies.Strategy;

import com.iver.utiles.IPersistance;

import com.iver.utiles.XMLEntity;

/**

 * Implementaci?n de las caracter?sticas de alto nivel de las capas:

 * visibilidad, activaci?n, nombre, ...

 */

public abstract class FLyrDefault implements FLayer {

        // private PropertyChangeSupport lnkPropertyChangeSupport;

        private static Logger logger = Logger.getLogger(FLyrDefault.class);

        /** Path de la capa en el arbol de capas */

        private FLayers parentLayer = null;

        private FLayers virtualLayers = null;

        private String name;

        private IProjection projection;

        private int transparency = 0;

        private ICoordTrans ct;

        private double minScale = -1; // -1 indica que no se usa

        private double maxScale = -1;

//        private boolean isInTOC = true;

        protected ArrayList layerListeners = new ArrayList();

        private Strategy privateStrategy = null;

        private Hashtable properties = new Hashtable();

        private BufferedImage cacheImageDrawnLayers = null;

        //by default, all is active, visible and avalaible

        private FLayerStatus status = new FLayerStatus();

        public Object getProperty(Object key) {

                return properties.get(key);

        }

        public void setProperty(Object key, Object val) {

                properties.put(key, val);

        }

        public Map getExtendedProperties() {

                return properties;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#setActive(boolean)

         */

        public void setActive(boolean selected) {

                //active = selected;

                status.active = selected;

                callActivationChanged(LayerEvent.createActivationChangedEvent(this,

                                "active"));

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#isActive()

         */

        public boolean isActive() {

//                return active;

                return status.active;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#setName(java.lang.String)

         */

        public void setName(String name) {

                this.name = name;

                callNameChanged(LayerEvent.createNameChangedEvent(this, "name"));

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getName()

         */

        public String getName() {

                return name;

        }

        /*

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#load()

         */

        public void load() throws LoadLayerException {

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#setVisible(boolean)

         */

        public void setVisible(boolean visibility) {

//                visible = visibility;

                boolean changed = status.visible != visibility;

                status.visible = visibility;

                setDirty(true);

                if (changed){

                        if (this.getMapContext() != null){

                                this.getMapContext().clearAllCachingImageDrawnLayers();

                        }

                }

                callVisibilityChanged(LayerEvent.createVisibilityChangedEvent(this,

                                "visible"));

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#isVisible()

         */

        public boolean isVisible() {

//                return visible && this.available;

                return status.visible && status.available;

        }

        /**

         * Devuelve la capa padre de la actual.

         *

         * @return FLayers padre.

         */

        public FLayers getParentLayer() {

                return parentLayer;

        }

        /**

         * Inserta la capa padre.

         *

         * @param root

         *            capa padre.

         */

        public void setParentLayer(FLayers root) {

                this.parentLayer = root;

        }

        /**

         * Inserta una proyecci?n.

         *

         * @param proj

         *            Proyecci?n.

         */

        public void setProjection(IProjection proj) {

                projection = proj;

                // Comprobar que la proyecci?n es la misma que la de FMap

                // Si no lo es, es una capa que est? reproyectada al vuelo

                if ((proj != null) && (getMapContext() != null))

                        if (proj != getMapContext().getProjection()) {

                                ICoordTrans ct = proj.getCT(getMapContext().getProjection());

                                setCoordTrans(ct);

                                logger.debug("Cambio proyecci?n: FMap con "

                                                + getMapContext().getProjection().getAbrev() + " y capa "

                                                + getName() + " con " + proj.getAbrev());

                        }

        }

        /**

         * @see org.cresques.geo.Projected#getProjection()

         */

        public IProjection getProjection() {

                return projection;

        }

        /**

         * @see org.cresques.geo.Projected#reProject(org.cresques.cts.ICoordTrans)

         */

        public void reProject(ICoordTrans arg0) {

        }

        /**

         * Devuelve el nivel de transparencia de la capa.

         *

         * @return Entero que representa el nivel de transparencia.

         */

        public int getTransparency() {

                return transparency;

        }

        /**

         * Inserta el nivel de transparencia de la capa.

         *

         * @param trans

         *            Nivel de transparencia.

         */

        public void setTransparency(int trans) {

                transparency = trans;

                setDirty(true);

        }

        /**

         * Devuelve el XMLEntity a partir del objeto.

         *

         * @return XMLEntity.

         * @throws XMLException

         */

        public XMLEntity getXMLEntity() throws XMLException {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className", this.getClass().getName());

                if (this instanceof FLayers) {

                }

//                xml.putProperty("active", active);

                xml.putProperty("active", status.active);

                xml.putProperty("name", name);

                xml.putProperty("minScale", minScale);

                xml.putProperty("maxScale", maxScale);

                // TODO xml.addChild(parentLayer.getXMLEntity());

//                xml.putProperty("visible", visible);

                xml.putProperty("visible", status.visible);

                if (projection != null) {

                        xml.putProperty("proj", projection.getAbrev());

                }

                xml.putProperty("transparency", transparency);

//                xml.putProperty("isInTOC", isInTOC);

                xml.putProperty("isInTOC", status.inTOC);

                // persist Properties hashTable

                Set keyset = properties.keySet();

                Iterator keyitr = keyset.iterator();

                XMLEntity xmlProperties = new XMLEntity();

                xmlProperties.putProperty("childName","properties");

            while (keyitr.hasNext()) {

              String propName = (String)keyitr.next();

              Object obj = properties.get(propName);

              if (obj instanceof IPersistance)

              {

                      IPersistance persistObj = (IPersistance)obj;

                  XMLEntity xmlPropObj = persistObj.getXMLEntity();

              // make sure the node contains the class name

                  if (!xmlPropObj.contains("className")) {

                          try {

                                  String propClassName = persistObj.getClassName();

                                  System.out.println("PROP CLASS NAME "+propClassName);

                                  xmlPropObj.putProperty("className", propClassName);

                          } catch (Exception e) {

                                  e.printStackTrace();

                          }

                  }

                  xmlPropObj.putProperty("layerPropertyName", propName);

                  xmlProperties.addChild(xmlPropObj);

              } else if (obj instanceof String) {

                  XMLEntity xmlPropObj = new XMLEntity();

                  xmlPropObj.putProperty("className", String.class.getName());

                  xmlPropObj.putProperty("value",(String)obj);

                  xmlPropObj.putProperty("layerPropertyName", propName);

                  xmlProperties.addChild(xmlPropObj);

              }

            }

            if (xmlProperties.getChildrenCount() > 0) {

                    xml.addChild(xmlProperties);

            }

                return xml;

        }

        /*

         * Inserta los valores de los atributos del XMLEntity al objeto.

         *

         * @param xml XMLEntity.

         *

         * @throws XMLException @throws DriverException @throws DriverIOException

         *

         * public void setXMLEntity03(XMLEntity xml) throws XMLException { active =

         * xml.getBooleanProperty("active"); name = xml.getStringProperty("name");

         * minScale=xml.getDoubleProperty("minScale");

         * maxScale=xml.getDoubleProperty("maxScale"); visible =

         * xml.getBooleanProperty("visible"); if (xml.contains("proj")) {

         * setProjection(ProjectionPool.get(xml.getStringProperty("proj"))); } if

         * (xml.contains("transparency")) transparency =

         * xml.getIntProperty("transparency"); }

         */

        /**

         * Inserta los valores de los atributos del XMLEntity al objeto.

         *

         * @param xml

         *            XMLEntity.

         *

         * @throws XMLException

         * @throws DriverException

         * @throws DriverIOException

         */

        public void setXMLEntity(XMLEntity xml) throws XMLException {

//                active = xml.getBooleanProperty("active");

                status.active = xml.getBooleanProperty("active");

                name = xml.getStringProperty("name");

                minScale = xml.getDoubleProperty("minScale");

                maxScale = xml.getDoubleProperty("maxScale");

//                visible = xml.getBooleanProperty("visible");

                status.visible = xml.getBooleanProperty("visible");

                if (xml.contains("proj")) {

                        setProjection(CRSFactory.getCRS(xml.getStringProperty("proj")));

                }

                if (xml.contains("transparency"))

                        transparency = xml.getIntProperty("transparency");

                if (xml.contains("isInTOC"))

//                        isInTOC = xml.getBooleanProperty("isInTOC");

                        status.inTOC = xml.getBooleanProperty("isInTOC");

        // recreate Properties hashTable

                int xmlPropertiesPos = xml.firstIndexOfChild("childName","properties");

                XMLEntity xmlProperties =null;

                if (xmlPropertiesPos > -1)

                        xmlProperties = xml.getChild(xmlPropertiesPos);

                if (xmlProperties != null) {

                        int numProps = xmlProperties.getChildrenCount();

                        Object obj;

                        String className;

                        Class classProp;

                        IPersistance objPersist;

            for (int iProp=0; iProp<numProps; iProp++) {

                    XMLEntity xmlProp = xmlProperties.getChild(iProp);

                    try {

                            className = xmlProp.getStringProperty("className");

                            if (className.equals(String.class.getName())) {

                                    obj = xmlProp.getStringProperty("value");

                            } else {

                                    classProp = Class.forName(className);

                                    obj = classProp.newInstance();

                                    objPersist = (IPersistance)obj;

                                    objPersist.setXMLEntity(xmlProp);

                            }

                            String propName = xmlProp.getStringProperty("layerPropertyName");

                            properties.put(propName, obj);

                        } catch (Exception e) {

                                //FIXME: OJO !!!!!

                                continue;

                        }

            }

                       // remove Properties children to avoid breaking layers' XML reading logic

                xml.removeChild(xmlPropertiesPos);

                }

        }

        /**

         * Inserta los valores de los atributos del XMLEntity al objeto.

         *

         * @param xml

         *            XMLEntity.

         *

         * @throws XMLException

         * @throws DriverException

         * @throws DriverIOException

         */

        public void setXMLEntity03(XMLEntity xml) throws XMLException {

//                active = xml.getBooleanProperty("active");

                status.active = xml.getBooleanProperty("active");

                name = xml.getStringProperty("name");

                minScale = xml.getDoubleProperty("minScale");

                maxScale = xml.getDoubleProperty("maxScale");

//                visible = xml.getBooleanProperty("visible");

                status.visible = xml.getBooleanProperty("visible");

                if (xml.contains("proj")) {

                        setProjection(CRSFactory.getCRS(xml.getStringProperty("proj")));

                }

                if (xml.contains("transparency"))

                        transparency = xml.getIntProperty("transparency");

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getMapContext()

         */

        public MapContext getMapContext() {

                if (getParentLayer() != null) {

                        return getParentLayer().getMapContext();

                } else {

                        return null;

                }

        }

        /**

         * A?ade a la lista de listener un nuevo LayerListener.

         *

         * @param o

         *            LayerListener.

         *

         * @return boolean.

         */

        public boolean addLayerListener(LayerListener o) {

                if (layerListeners.contains(o))

                        return false;

                return layerListeners.add(o);

        }

        public LayerListener[] getLayerListeners() {

                return (LayerListener[])layerListeners.toArray(new LayerListener[0]);

        }

        /**

         * Borra de la lista de listeners el que se pasa como par?metro.

         *

         * @param o

         *            LayerListener a borrar.

         *

         * @return True si ha sido correcto el borrado del Listener.

         */

        public boolean removeLayerListener(LayerListener o) {

                return layerListeners.remove(o);

        }

        /**

         * Llamada al metodo nameChanged de los Listeners dados de alta.

         *

         * @param e

         *            LayerEvent.

         */

        private void callNameChanged(LayerEvent e) {

                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {

                        LayerListener listener = (LayerListener) iter.next();

                        listener.nameChanged(e);

                }

        }

        /**

         * Llamada al m?todo visibilityChanged de los Listeners.

         *

         * @param e

         *            LayerEvent.

         */

        private void callVisibilityChanged(LayerEvent e) {

                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {

                        LayerListener listener = (LayerListener) iter.next();

                        listener.visibilityChanged(e);

                }

        }

        /**

         * Llamada al m?todo activationChanged de los Listener.

         *

         * @param e

         *            LayerEvent.

         */

        private void callActivationChanged(LayerEvent e) {

                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {

                        LayerListener listener = (LayerListener) iter.next();

                        listener.activationChanged(e);

                }

        }

        /**

         * Devuelve las capas virtuales.

         *

         * @return FLayers.

         */

        public FLayers getVirtualLayers() {

                return virtualLayers;

        }

        /**

         * Inserta las capas virtuales.

         *

         * @param virtualLayers

         *            FLayers.

         */

        public void setVirtualLayers(FLayers virtualLayers) {

                this.virtualLayers = virtualLayers;

        }

        /**

         * Inserta la Transformaci?n de coordenadas.

         *

         * @param ct

         *            Transformaci?n de coordenadas.

         */

        public void setCoordTrans(ICoordTrans ct) {

                this.ct = ct;

        }

        /**

         * Devuelve las transformaci?n de coordenadas.

         *

         * @return ct.

         */

        public ICoordTrans getCoordTrans() {

                return ct;

        }

        /**

         * M?todo que es llamado por Flayers para notificar a la capa que va a ser

         * a?adida. Esta previa notificaci?n es util para las capas que necesitan

         * hacer algo antes de ser a?adida. Por ejemplo, el raster necesita volver a

         * abrir el fichero que ha podido ser cerrado con anterioridad. Si no se

         * redefine este m?todo no se har? nada ya que este es vacio.

         * @throws LoadLayerException

         */

        public void wakeUp() throws LoadLayerException {

        }

        public double getMinScale() {

                return minScale;

        }

        /*

         * (non-Javadoc)

         *

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getMaxScale()

         */

        public double getMaxScale() {

                return maxScale;

        }

        public void setMinScale(double minScale) {

                this.minScale = minScale;

        }

        public void setMaxScale(double maxScale) {

                this.maxScale = maxScale;

        }

        public boolean isWithinScale(double scale) {

                boolean bVisible = true;

                if (getMinScale() != -1) {

                        if (scale < getMinScale())

                                bVisible = false;

                }

                if (getMaxScale() != -1) {

                        if (scale > getMaxScale())

                                bVisible = false;

                }

                return bVisible;

        }

        public Strategy getStrategy() {

                return privateStrategy;

        }

        public void setStrategy(Strategy s) {

                privateStrategy = s;

        }

        public void setEditing(boolean b) throws StartEditionLayerException {

//                isediting = b;

                status.editing = b;

                setDirty(true);

                setCachingDrawnLayers(b);

        }

        protected void callEditionChanged(LayerEvent e) {

                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {

                        LayerListener listener = (LayerListener) iter.next();

                        listener.editionChanged(e);

                }

        }

        public boolean isEditing() {

//                return isediting;

                return status.editing;

        }

        public ImageIcon getTocImageIcon() {

                return null;

        }

        public boolean isInTOC() {

//                return isInTOC;

                return status.inTOC;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#isCachingDrawnLayers()

         */

        public boolean isCachingDrawnLayers() {

//                return bCacheDrawnLayers;

                return status.cacheDrawnLayers;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#setCachingDrawnLayers(boolean)

         */

        public void setCachingDrawnLayers(boolean bCacheDrawnLayers) {

//                this.bCacheDrawnLayers = bCacheDrawnLayers;

                status.cacheDrawnLayers = bCacheDrawnLayers;

                if (status.cacheDrawnLayers == false)

                        this.cacheImageDrawnLayers = null;

        }

        public BufferedImage getCacheImageDrawnLayers() {

                return cacheImageDrawnLayers;

        }

        public void setCacheImageDrawnLayers(BufferedImage cacheImageDrawnLayers) {

                this.cacheImageDrawnLayers = cacheImageDrawnLayers;

        }

        public boolean isDirty() {

                return status.dirty;

        }

        public void setDirty(boolean dirty) {

                status.dirty = dirty;

        }

        public boolean isAvailable() {

                return status.available;

        }

        public void setAvailable(boolean available) {

                status.available = available;

        }

        public void reload() throws ReloadLayerException {

                this.setAvailable(true);

        }

        /**

         * Returns the status of the layer

         */

        public FLayerStatus getFLayerStatus(){

                return status;

        }

        /**

         * Sets the status of the layer

         * @param status

         */

        public void setFLayerStatus(FLayerStatus status){

                this.status = status;

        }

        /*

         * This stuff is to save error's info that causes

         * unavailable status.

         * */

        public boolean isOk(){

                return status.isOk();

        }

        public int getNumErrors(){

                return status.getNumErrors();

        }

        public BaseException getError(int i){

                return status.getError(i);

        }

        public List getErrors(){

                return status.getErrors();

        }

        public void addError(BaseException exception){

                status.addLayerError(exception);

        }

        public boolean visibleRequired() {

                return status.visible;

        }

        public String getInfoString() {

                return null;

        }

        public boolean isWritable() {

                return status.writable;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#cloneLayer()

         */

        public FLayer cloneLayer() throws Exception {

                return this;

        }

        /* By default this operation is not suported

         * 

         * @see com.iver.cit.gvsig.fmap.layers.FLayer#newComposedLayer()

         */

        public ComposedLayer newComposedLayer() {                

                return null;

        }

}