/**
 *
 *    geo-platform
 *    Rich webgis framework
 *    http://geo-platform.org
 *   ====================================================================
 *
 *   Copyright (C) 2008-2017 geoSDI Group (CNR IMAA - Potenza - ITALY).
 *
 *   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, see http://www.gnu.org/licenses/
 *
 *   ====================================================================
 *
 *   Linking this library statically or dynamically with other modules is
 *   making a combined work based on this library. Thus, the terms and
 *   conditions of the GNU General Public License cover the whole combination.
 *
 *   As a special exception, the copyright holders of this library give you permission
 *   to link this library with independent modules to produce an executable, regardless
 *   of the license terms of these independent modules, and to copy and distribute
 *   the resulting executable under terms of your choice, provided that you also meet,
 *   for each linked independent module, the terms and conditions of the license of
 *   that module. An independent module is a module which is not derived from or
 *   based on this library. If you modify this library, you may extend this exception
 *   to your version of the library, but you are not obligated to do so. If you do not
 *   wish to do so, delete this exception statement from your version.
 */
package org.geosdi.geoplatform.gui.client.widget.cql;

import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.extjs.gxt.ui.client.widget.layout.FitLayout;
import com.google.gwt.core.client.GWT;
import org.geosdi.geoplatform.gui.client.command.filter.basic.FilterCheckCQLExpressionRequest;
import org.geosdi.geoplatform.gui.client.command.filter.basic.FilterCheckCQLExpressionResponse;
import org.geosdi.geoplatform.gui.client.config.MementoModuleInjector;
import org.geosdi.geoplatform.gui.client.i18n.LayerFiltersModuleConstants;
import org.geosdi.geoplatform.gui.client.i18n.buttons.ButtonsConstants;
import org.geosdi.geoplatform.gui.client.model.memento.save.IMementoSave;
import org.geosdi.geoplatform.gui.client.model.memento.save.storage.AbstractMementoOriginalProperties;
import org.geosdi.geoplatform.gui.client.widget.GeoPlatformWindow;
import org.geosdi.geoplatform.gui.client.widget.tree.GPTreePanel;
import org.geosdi.geoplatform.gui.command.api.ClientCommandDispatcher;
import org.geosdi.geoplatform.gui.command.api.GPClientCommand;
import org.geosdi.geoplatform.gui.configuration.message.GeoPlatformMessage;
import org.geosdi.geoplatform.gui.impl.map.event.CQLFilterLayerMapEvent;
import org.geosdi.geoplatform.gui.model.tree.GPBeanTreeModel;
import org.geosdi.geoplatform.gui.model.tree.GPLayerTreeModel;
import org.geosdi.geoplatform.gui.puregwt.GPHandlerManager;

/**
 * @author Nazzareno Sileno - CNR IMAA geoSDI Group
 * @email nazzareno.sileno@geosdi.org
 */
public class CQLFilterWidget extends GeoPlatformWindow {

    public final static short WIDGET_HEIGHT = 400;
    public final static short WIDGET_WIDTH = 500;
    private final CQLFilterLayerMapEvent cqlFilterLayerMapEvent = new CQLFilterLayerMapEvent();
    private GPTreePanel<GPBeanTreeModel> treePanel;
    private CQLFilterTabWidget cqlFilterTabWidget;
    private FilterCheckCQLExpressionRequest filterCheckCQLExpressionRequest = GWT.create(FilterCheckCQLExpressionRequest.class);

    public CQLFilterWidget(boolean lazy, GPTreePanel<GPBeanTreeModel> treePanel) {
        super(lazy);
        this.treePanel = treePanel;
    }

    @Override
    public void addComponent() {
        this.cqlFilterTabWidget = new CQLFilterTabWidget(Boolean.TRUE, this.treePanel);
        super.add(this.cqlFilterTabWidget);
        Button verifyButton = new Button(ButtonsConstants.INSTANCE.verifyText(), 
                new SelectionListener<ButtonEvent>() {
            @Override
            public void componentSelected(ButtonEvent ce) {
                filterCheckCQLExpressionRequest.setCqlFilterExpression(cqlFilterTabWidget.getCQLFilterExpression());

                ClientCommandDispatcher.getInstance().execute(
                        new GPClientCommand<FilterCheckCQLExpressionResponse>() {
                    private static final long serialVersionUID = 7052499099859652678L;

                    {
                        super.setCommandRequest(filterCheckCQLExpressionRequest);
                    }

                    @Override
                    public void onCommandSuccess(FilterCheckCQLExpressionResponse response) {
                        CQLFilterWidget.super.setStateId(response.getResult());
                        if (response.getResult().startsWith("Error")) {
                            GeoPlatformMessage.errorMessage(LayerFiltersModuleConstants.INSTANCE.CQLErrorText(),
                                    response.getResult());
                        } else {
                            GeoPlatformMessage.alertMessage(LayerFiltersModuleConstants.INSTANCE.CQLSuccessText(),
                                    response.getResult());
                        }
                    }

                    @Override
                    public void onCommandFailure(Throwable exception) {
                        GeoPlatformMessage.errorMessage(LayerFiltersModuleConstants.INSTANCE.CQLErrorText(),
                                exception.getMessage());
                    }
                });
            }
        });
        super.addButton(verifyButton);
        Button applyButton = new Button(ButtonsConstants.INSTANCE.applyText(), 
                new SelectionListener<ButtonEvent>() {
            @Override
            public void componentSelected(ButtonEvent ce) {
                GPLayerTreeModel layerSelected = (GPLayerTreeModel) treePanel.getSelectionModel().getSelectedItem();
                //
                IMementoSave mementoSave = MementoModuleInjector.MainInjector.getInstance().getMementoSave();
                AbstractMementoOriginalProperties memento = mementoSave.copyOriginalProperties(layerSelected);
                layerSelected.setCqlFilter(cqlFilterTabWidget.getCQLFilterExpression());
                mementoSave.putOriginalPropertiesInCache(memento);
                //
                cqlFilterLayerMapEvent.setLayerBean(layerSelected);
                GPHandlerManager.fireEvent(cqlFilterLayerMapEvent);
                treePanel.refresh(layerSelected);
            }
        });
        super.addButton(applyButton);
        Button closeButton = new Button(ButtonsConstants.INSTANCE.closeText(),
                new SelectionListener<ButtonEvent>() {
            @Override
            public void componentSelected(ButtonEvent ce) {
                cqlFilterTabWidget.reset();
                hide();
            }
        });

        super.addButton(closeButton);
    }

    @Override
    public void show() {
        super.show();
        GPLayerTreeModel layerElement = (GPLayerTreeModel) treePanel.getSelectionModel().getSelectedItem();
        String cqlFilter = layerElement.getCqlFilter();
        if (cqlFilter != null) {
            this.cqlFilterTabWidget.setCQLValue(cqlFilter);
        }
    }

    @Override
    public void initSize() {
        super.setSize(WIDGET_WIDTH, WIDGET_HEIGHT);
    }

    @Override
    public void setWindowProperties() {
        super.setHeadingHtml(LayerFiltersModuleConstants.INSTANCE.CQLFilterWidget_headingText());
        super.setLayout(new FitLayout());
        super.setModal(Boolean.TRUE);
    }
}