Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2017 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 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., 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.raster.lib.buffer.spi.operations;

import org.gvsig.raster.lib.buffer.api.Buffer;

import org.gvsig.raster.lib.buffer.api.exceptions.BufferOperationException;

import org.gvsig.raster.lib.buffer.api.operations.OperationFactory;

import org.gvsig.raster.lib.buffer.spi.exceptions.ProcessingOperationException;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.task.SimpleTaskStatus;

import org.gvsig.tools.task.TaskStatusManager;

/**

 * @author fdiaz

 *

 */

public abstract class AbstractOperation implements OperationServices {

    static public String COPY_UNPROCESSED_BANDS_PARAM = "copy_unprocessed_bands";

    private Buffer buffer;

    private DynObject parameters;

    private Buffer outputBuffer;

    private final OperationFactory factory;

    private SimpleTaskStatus taskStatus;

    private boolean copyUnprocessedBands;

    /**

     *

     * @param factory

     */

    protected AbstractOperation(OperationFactory factory) {

        this.factory = factory;

    }

    protected boolean mustCopyUnprocessedBands() {

        return copyUnprocessedBands;

    }

    @Override

    public void preProcess() throws BufferOperationException {

        if (this.parameters.getDynClass().getDynField(COPY_UNPROCESSED_BANDS_PARAM) != null

            && this.parameters.hasDynValue(COPY_UNPROCESSED_BANDS_PARAM)) {

            copyUnprocessedBands = (Boolean) this.parameters.getDynValue(COPY_UNPROCESSED_BANDS_PARAM);

        } else {

            copyUnprocessedBands = true;

        }

    }

    @Override

    public SimpleTaskStatus getTaskStatus() {

        if( this.taskStatus==null ) {

            TaskStatusManager taskStatusManager = ToolsLocator.getTaskStatusManager();

            this.taskStatus = taskStatusManager.createDefaultSimpleTaskStatus(

                this.getFactory().getName());

            this.taskStatus.setAutoremove(true);

            this.taskStatus.add();

        }

        return this.taskStatus;

    }

    @Override

    public void process() throws ProcessingOperationException {

        //Nothing to do

    }

    @Override

    public void postProcess() throws BufferOperationException {

        //Nothing to do

    }

    /* (non-Javadoc)

     * @see org.gvsig.raster.lib.buffer.api.Operation#execute(org.gvsig.raster.lib.buffer.api.Buffer, org.gvsig.tools.dynobject.DynObject)

     */

    @Override

    public Buffer execute(SimpleTaskStatus status, Buffer buffer, DynObject parameters) throws BufferOperationException {

        this.buffer = buffer;

        this.parameters = parameters;

        this.taskStatus = status;

        try {

            this.taskStatus.push();

            this.preProcess();

            this.process();

            this.postProcess();

            return this.getOutputBuffer();

        } finally {

            if( this.taskStatus.isRunning() ) {

                this.taskStatus.terminate();

            }

            this.taskStatus.pop();

        }

    }

    /* (non-Javadoc)

     * @see org.gvsig.raster.lib.buffer.api.Operation#getFactory()

     */

    @Override

    public OperationFactory getFactory() {

        return factory;

    }

    /* (non-Javadoc)

     * @see org.gvsig.raster.lib.buffer.spi.OperationServices#getParameters()

     */

    @Override

    public DynObject getParameters() {

        return parameters;

    }

    @Override

    public Object getParameter(String name, Object defaultValue) {

        if(this.parameters.getDynClass().getDynField(name)!=null) {

            return this.getParameters().getDynValue(name);

        }

        return defaultValue;

    }

    @Override

    public void setParameter(String name, Object value) {

            this.getParameters().setDynValue(name, value);

    }

    /* (non-Javadoc)

     * @see org.gvsig.raster.lib.buffer.spi.OperationServices#getInputBuffer()

     */

    @Override

    public Buffer getInputBuffer() {

        return this.buffer;

    }

    /* (non-Javadoc)

     * @see org.gvsig.raster.lib.buffer.spi.OperationServices#getOutputBuffer()

     */

    @Override

    public Buffer getOutputBuffer() {

        return outputBuffer;

    }

    @Override

    public void setOutputBuffer(Buffer theOutputBuffer) {

        this.outputBuffer = theOutputBuffer;

    }

}