Application: gvSIG desktop » Library: org.gvsig.tools

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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.

 *

 */

package org.gvsig.tools.task.impl;

import java.util.Date;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.observer.ObservableHelper;

import org.gvsig.tools.observer.Observer;

import org.gvsig.tools.task.SimpleTaskStatus;

import org.gvsig.tools.task.TaskStatusManager;

/**

 * @author gvSIG Team

 * @version $Id$

 *

 */

public class BaseTaskStatus implements SimpleTaskStatus {

    private Date lastModification = null;

    protected long minValue = 0;

    protected long maxValue = 0;

    protected long curValue = 0;

    protected String tittle = null;

    protected String code = null;

    protected String message = null;

    protected boolean isCancelled = false;

    protected boolean isAbortedByError = false;

    protected boolean isRunning = true;

    protected TaskStatusManager manager = null;

        private boolean isCancellable;

        private boolean isCancellationRequested;

        private ObservableHelper observers = null;

    public BaseTaskStatus(String tittle) {

            this.manager =  ToolsLocator.getTaskStatusManager();

        this.tittle = tittle;

        this.minValue = 0;

        this.maxValue = 0;

        this.isCancelled = false;

        this.isAbortedByError = false;

        this.isRunning = true;

        this.message = null;

        this.isCancellable = false;

        this.isCancellationRequested = false;

        this.code = this.manager.getNewCode();

        this.observers = new ObservableHelper();

        this.touch();

    }

    public BaseTaskStatus(String tittle, long minValue, long maxValue) {

            this(tittle);

        this.minValue = minValue;

        this.maxValue = maxValue;

    }

    public void setRangeOfValues(long min, long max) {

        this.minValue = min;

        this.maxValue = max;

    }

    protected void touch() {

            Date now = new Date(); 

            if( this.lastModification!=null && (now.getTime() - this.lastModification.getTime()) > 2000 ) {

                    this.message = null;

            }

        this.lastModification = now;

        this.manager.update(this);

        this.observers.notifyObservers(this, null);

    }

    public Date getLastModification() {

            return this.lastModification;

    }

    public void message(String message) {

            this.touch();

            this.message = message;

    }

    public String getTitle() {

        return this.tittle;

    }

    public String getCode() {

        return this.code;

    }

    public void setCurValue(long value) {

        this.curValue = value;

        this.touch();

    }

    public int getCompleted() {

        if( !this.isRunning ) {

            return 100;

        }

        if( this.maxValue == this.minValue ) {

                // No se puede calcular ya que no se ha indicado el numero de elementos

                // sobre los que se esta trabajando, asi que devoobemos el 100%.

                return 100;

        }

        try {

            return (int) (((this.curValue-this.minValue)*100)/(this.maxValue-this.minValue));

        } catch( Exception e) {

            return 100;

        }

    }

    public String getLabel() {

            String progress;

        if( !this.isRunning ) {

            return "" ;

        }

        if( this.maxValue == this.minValue ) {

                // No se puede calcular ya que no se ha indicado el numero de elementos

                // sobre los que se esta trabajando.

            progress = " (" + this.curValue + ")";

        } else {

            progress = " (" + (this.curValue-this.minValue) + " / " + (this.maxValue-this.minValue) + ")" ;

        }

            if( this.message == null ) {

            return progress;

            } else {

            return this.message + progress;

            }

    }

    public void teminate() {

        this.isRunning = false;

        this.touch();

    }

    public void cancel() {

        this.isCancelled = true;

        this.isRunning = false;

        this.touch();

    }

    public void abort() {

        this.isAbortedByError = true;

        this.isRunning = false;

        this.touch();

    }

    public boolean isCancelled() {

        return this.isCancelled;

    }

    public boolean isAborted() {

        return this.isAbortedByError;

    }

    public boolean isRunning() {

        return this.isRunning;

    }

        public TaskStatusManager getManager() {

                return this.manager;

        }

        public boolean isIndeterminate() {

                return this.minValue == this.maxValue;

        }

        public void remove() {

                this.manager.remove(this);

        }

        public boolean isCancellable() {

                return this.isCancellable;

        }

        public void setCancellable(boolean cancellable) {

                this.isCancellable = cancellable;

        }

        public boolean isCancellationRequested() {

                return this.isCancellationRequested;

        }

        public void cancelRequest() {

                this.isCancellationRequested = true;

        }

        public void addObserver(Observer o) {

                this.observers.addObserver(o);

        }

        public void deleteObserver(Observer o) {

                this.observers.deleteObserver(o);

        }

        public void deleteObservers() {

                this.observers.deleteObservers();

        }

}