Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.mapcontext.layers;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.exception.BaseException;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.gvsig.tools.util.Callable;

/**

 * <p>All layers in <i>libFMap</i> can be in a set of <i>states</i>, that their combination represent the <i>status</i> of a layer.</p>

 * 

 * <p><code>FLayerStatus</code> class supports the common status for all kind of {@link FLyrDefault FLyrDefault} layers.</p>

 * 

 * <p>This means that not necessarily all layers can stay in all possible status, it depends on its particular

 * nature.</p>

 * 

 * <p>Layer status states defined in <code>FLayerStatus</code> are:

 *  <ul>

 *  <li><i><b>Available</b></i>: the layer is available if the source of its data is on-line.</li>

 *  <li><i><b>Visible</b></i>: one layer is visible if it's selected its <i>check box</i> associated in TOC. This implies that 

 *  layer will be called to be painted unless the necessary data would be unavailable; this situation is more frequent with layers of

 *  remote services.</li>

 *  <li><i><b>Active</b></i>: is active if it's selected at the TOC.</li>

 *  <li><i><b>Dirty</b></i>: is dirty if needs to be refreshed.</li>

 *  <li><i><b>In TOC</b></i>: if it's being listed in a TOC GUI.</li>

 *  <li><i><b>Editing</b></i>: if the layer it's being edited now.</li>

 *  <li><i><b>Writable</b></i>: if can be modified and saved the changes.</li>

 *  <li><i><b>Cache drawn layers</b></i>: if stores previous draws. This is useful to accelerate the draw of the layer.</li>

 *  <li><i><b>Driver loaded</b></i>: if driver for managing the layer has been loaded successfully.</li>

 *  </ul>

 * </p>

 * 

 * @see IFLayerStatus

 * 

 * @author azabala

 */

public class FLayerStatus implements IFLayerStatus {

        /**

         * <p>Layer's availability: the layer is available if the source of its data is on-line.</p>

         */

        public boolean available;

        /**

         * <p>Layer's visibility: the layer is visible if it's selected its <i>check box</i> associated in TOC. This implies that 

         *  layer will tried to be painted unless the necessary data would be unavailable; this situation is more frequent with layers of

         *  remote services.</p>

         */

        public boolean visible;

        /**

         * <p>The layer is active if it's selected at the TOC.</p>

         */

        public boolean active;

        /**

         * <p>One layer is dirty if needs to be refreshed.</p>

         */

        public boolean dirty;

        /**

         * <p>The layer is in TOC if it's being listed in a TOC GUI.</p>

         */

        public boolean inTOC;

        /**

         * <p>This parameter reports if the layer it's being edited now.</p>

         */

        public boolean editing;

        /**

         * <p>This parameter reports if the layer can be modified and saved the changes.</p>

         */

        public boolean writable;

        /**

         * <p>This state reports if the layer stores previous draws. That's useful to accelerate the draw of the layer.</p>

         */

        public boolean cacheDrawnLayers;

        private boolean temporal = false;

        /**

         * <p>List with the information of the driver errors produced working this layer.</p>

         */

        private List layerErrors;

        /**

         * <p>This state reports if the driver for managing the layer has been loaded successfully.</p>

         */

        private boolean driverLoaded=true;

        /**

         * <p>Creates an instance with the default status of a <code>FLyrDefault</code> layer:

         * <br>

         *  <ul>

         *  <li><b><i>Visible</i></b>: <code>true</code> .</li>

         *  <li><b><i>Active</i></b>: <code>false</code> .</li>

         *  <li><b><i>In TOC</i></b>: <code>true</code> .</li>

         *  <li><b><i>Editing</i></b>: <code>false</code> .</li>

         *  <li><b><i>Cache drawn layers</i></b>: <code>false</code> .</li>

         *  <li><b><i>Dirty</i></b>: <code>false</code> .</li>

         *  <li><b><i>Available</i></b>: <code>true</code> .</li>

         *  <li><b><i>Driver loaded</i></b>: <code>true</code> .</li>

         *  <li><b><i>Writable</i></b>: <code>false</code> .</li>

         *  <li>Without driver errors.</li>

         *  </ul>

         * </p>

         */

        public FLayerStatus(){

                this.layerErrors = new ArrayList();

                visible = true;

                active = false;

                inTOC = true;

                editing = false;

                cacheDrawnLayers = false;

                dirty = false;

                available = true;

                writable = false;

        }

        /**

         * <p>Stores information of an exception produced working with a driver of the layer.</p>

         * 

         * @param error the driver exception

         */

        public void addLayerError(BaseException error){

                layerErrors.add(error);

        }

        public FLayerStatus cloneStatus(){

                FLayerStatus newStatus = new FLayerStatus();

                newStatus.layerErrors.addAll(this.layerErrors);

                newStatus.visible = this.visible;

                newStatus.active = this.active;

                newStatus.inTOC = this.inTOC;

                newStatus.editing = this.editing;

                newStatus.cacheDrawnLayers = this.cacheDrawnLayers;

                newStatus.dirty = this.dirty;

                newStatus.available = this.available;

                newStatus.driverLoaded = this.driverLoaded;        

                newStatus.writable = this.writable;

                return newStatus;

        }

        public boolean equals(Object obj) {

                FLayerStatus other;

                if (obj instanceof FLayerStatus) {

                        other = (FLayerStatus) obj;

                } else{

                        return false;

                }

                if (other.visible != this.visible 

                                || other.active != this.active

                                || other.inTOC != this.inTOC || other.editing != this.editing

                                || other.cacheDrawnLayers != this.cacheDrawnLayers

                                || other.dirty != this.dirty

                                || other.available != this.available

                                || other.driverLoaded != this.driverLoaded

                                || other.writable != this.writable) {

                        return false;

                }

                if ((!other.layerErrors.containsAll(this.layerErrors)) || other.layerErrors.size() != this.layerErrors.size()){

                        return false;

                }

                return super.equals(obj);

        }

        /**

         * <p>Gets the number of driver exceptions produced working with the layer.</p>

         * 

         * @return number of driver exceptions produced

         */

        public int getNumErrors(){

                return layerErrors.size();

        }

        /**

         * <p>Gets the information of the <i>nth</i> layer driver exception registered in the status.</p>

         * 

         * @param i ith layer exception registered

         * 

         * @return the <i>nth</i> layer driver exception registered

         */

        public BaseException getError(int i){

                return (BaseException) layerErrors.get(i);

        }

        /**

         * <p>Returns if there have been driver errors working with the layer.</p>

         * 

         * @return <code>true</code> if there have driver errors working with the layer; otherwise <code>false</code>

         */

        public boolean isOk(){

                return layerErrors.size() == 0;

        }

        /**

         * <p>Returns a list of errors produced in a layer working with its driver.</p>

         * 

         * @return list errors produced in a layer working with its driver

         */

        public List getErrors() {

                return layerErrors;

        }

        /**

         * <p>Returns if has been loaded successfully the driver for managing the layer.</p>

         * 

         * @return <code>true</code> if has been loaded successfully the driver for managing the layer; otherwise <code>false</code>

         */

        public boolean isDriverLoaded() {

                return driverLoaded;

        }

        /**

         * <p>Sets if has been loaded successfully the driver for managing the layer.</p>

         * 

         * @param driverLoaded <code>true</code> if has been loaded successfully the driver for managing the layer; otherwise <code>false</code>

         */

        public void setDriverLoaded(boolean driverLoaded) {

                this.driverLoaded = driverLoaded;

        }

        public void loadFromState(PersistentState state)

                        throws PersistenceException {

                visible = state.getBoolean("visible");

                active = state.getBoolean("active");

                inTOC = state.getBoolean("inTOC");

                editing = state.getBoolean("editing");

                cacheDrawnLayers = state.getBoolean("cacheDrawnLayers");

                dirty = state.getBoolean("dirty");

                available = state.getBoolean("available");

                writable = state.getBoolean("writable");

                driverLoaded = state.getBoolean("driverLoaded");

        }

        public void saveToState(PersistentState state) throws PersistenceException {

                state.set("visible", visible);

                state.set("active", active);

                state.set("inTOC", inTOC);

                state.set("editing", editing);

                state.set("cacheDrawnLayers", cacheDrawnLayers);

                state.set("dirty", dirty);

                state.set("available", available);

                state.set("writable", writable);

                state.set("driverLoaded", driverLoaded);

        }

    public static class RegisterPersistence implements Callable {

        public Object call() {

                PersistenceManager manager = ToolsLocator.getPersistenceManager();

                DynStruct definition = manager.addDefinition(

                                FLayerStatus.class,

                                "FLayerStatus",

                                "FLayerStatus Persistence definition",

                                null, 

                                null

                );

                definition.addDynFieldBoolean("visible").setMandatory(true);

                definition.addDynFieldBoolean("active").setMandatory(true);

                definition.addDynFieldBoolean("inTOC").setMandatory(true);

                definition.addDynFieldBoolean("editing").setMandatory(true);

                definition.addDynFieldBoolean("cacheDrawnLayers").setMandatory(true);

                definition.addDynFieldBoolean("dirty").setMandatory(true);

                definition.addDynFieldBoolean("available").setMandatory(true);

                definition.addDynFieldBoolean("writable").setMandatory(true);

                definition.addDynFieldBoolean("driverLoaded").setMandatory(true);

                //definition.addDynFieldBoolean("locked").setMandatory(true);

            return Boolean.TRUE;

        }

    }

}