| gvSIG desktop 1

/* 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.app.gui;

import java.awt.Window;

import javax.swing.JPanel;

import org.cresques.cts.IProjection;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.ApplicationManager;

import org.gvsig.app.gui.wizards.WizardListener;

import org.gvsig.app.gui.wizards.WizardListenerSupport;

import org.gvsig.app.prepareAction.PrepareContextView;

import org.gvsig.fmap.dal.DataStoreParameters;

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.MapContextManager;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public abstract class WizardPanel extends JPanel {

        private static final Logger logger = LoggerFactory.getLogger(WizardPanel.class);

    private static final long serialVersionUID = 5317749209668850863L;

    private String tabName = "TabName";

    private MapControl mapCtrl = null;

    private WizardListenerSupport listenerSupport = new WizardListenerSupport();

    public void addWizardListener(WizardListener listener) {

        listenerSupport.addWizardListener(listener);

    }

    public void callError(Exception descripcion) {

        listenerSupport.callError(descripcion);

    }

    public void removeWizardListener(WizardListener listener) {

        listenerSupport.removeWizardListener(listener);

    }

    public void callStateChanged(boolean finishable) {

        listenerSupport.callStateChanged(finishable);

    }

    protected void setTabName(String name) {

        tabName = name;

    }

    public String getTabName() {

        return tabName;

    }

    abstract public void initWizard();

    /**

     * @deprecated use {@link #executeWizard()} instead.

     */

    abstract public void execute();

    /**

     * Executes the wizard and returns anything created in the process.

     *

     * @return anything created in the process

     */

    public Object executeWizard() {

        execute();

        return null;

    }

    abstract public void close();

    abstract public DataStoreParameters[] getParameters();

    /**

     * You can use it to extract information from

     * the mapControl that will receive the new layer.

     * For example, projection to use, or visible extent.

     *

     * @return Returns the mapCtrl.

     */

    public MapControl getMapCtrl() {

        return mapCtrl;

    }

    /**

     * @param mapCtrl

     *            The mapCtrl to set.

     */

    public void setMapCtrl(MapControl mapCtrl) {

        this.mapCtrl = mapCtrl;

    }

    protected void doAddLayer(final MapControl mapControl,

        final String layerName, final DataStoreParameters parameters) {

        final ApplicationManager application = ApplicationLocator.getManager();

        final MapContextManager manager =

            MapContextLocator.getMapContextManager();

        final MapContext mapContext = mapControl.getMapContext();

        logger.info("addLayer('{}','{}')", layerName, parameters.toString());

        Thread task = new Thread(new Runnable() {

            public void run() {

                FLayer layer = null;

                FLayer preparedLayer = null;

                try {

                    layer = manager.createLayer(layerName, parameters);

                    preparedLayer =

                        application.prepareOpenLayer(layer,

                            new PrepareContextView() {

                                public Window getOwnerWindow() {

                                    return null;

                                }

                                public MapControl getMapControl() {

                                    return mapControl;

                                }

                                                                public IProjection getViewProjection() {

                                                                        return mapControl.getProjection();

                                                                }

                            });

                    if (preparedLayer != null) {

                        mapContext.getLayers().addLayer(preparedLayer);

                    }

                } catch (Exception e) {

                    NotificationManager.addError(e);

                    return;

                } finally {

                    if (preparedLayer != null && preparedLayer != layer) {

                        preparedLayer.dispose();

                        preparedLayer = null;

                    }

                    if (layer != null) {

                        layer.dispose();

                        layer = null;

                    }

                }

            }

        });

        task.start();

    }

    /**

     * This method is called for example when user changes

     * tab in add layer dialog (new tab's settings are valid?)

     *

     * @return whether current wizard settings are enough

     * (for example, to enable an Accept button in a container)

     */

    public boolean areSettingsValid() {

        return true;

    }

}