at.ait.dme.yuma.suite.apps.map.client.explore.SearchPanel.java Source code

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Here is the source code for at.ait.dme.yuma.suite.apps.map.client.explore.SearchPanel.java

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/*
 * Copyright 2008-2010 Austrian Institute of Technology
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they
 * will be approved by the European Commission - subsequent
 * versions of the EUPL (the "Licence");
 * you may not use this work except in compliance with the
 * Licence.
 * You may obtain a copy of the Licence at:
 *
 * http://ec.europa.eu/idabc/eupl
 *
 * Unless required by applicable law or agreed to in
 * writing, software distributed under the Licence is
 * distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied.
 * See the Licence for the specific language governing
 * permissions and limitations under the Licence.
 */

package at.ait.dme.yuma.suite.apps.map.client.explore;

import org.gwt.mosaic.ui.client.MessageBox;

import at.ait.dme.yuma.suite.apps.core.client.I18NConstants;
import at.ait.dme.yuma.suite.apps.core.client.I18NErrorMessages;
import at.ait.dme.yuma.suite.apps.core.client.YUMACoreProperties;
import at.ait.dme.yuma.suite.apps.map.client.TileBasedImageViewer;
import at.ait.dme.yuma.suite.apps.map.shared.server.FindPlaceResponse;
import at.ait.dme.yuma.suite.apps.map.shared.server.FindPlaceService;
import at.ait.dme.yuma.suite.apps.map.shared.server.FindPlaceServiceAsync;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.TextBox;

/**
 * Panel containing the GUI elements needed for the 'Exploration' place
 * search feature (see {@link ExplorationComposite}).
 * 
 * @author Rainer Simon
 */
public class SearchPanel extends FlowPanel {

    /**
     * Reference to the search layer
     */
    private SearchLayer searchLayer;

    /**
     * Search text box
     */
    private TextBox searchBox;

    private static final String POPUP_TEMPLATE = "Lat: @lat@<br/>" + "Lon: @lon@<br/>" + "X/Y: @x@/@y@<br/><br/>"
            + "Interpolated from: ";

    public SearchPanel(TileBasedImageViewer imageComposite) {
        this.searchLayer = imageComposite.getSearchLayer();
        I18NConstants i18n = YUMACoreProperties.getConstants();

        HorizontalPanel hPanel = new HorizontalPanel();
        hPanel.setStyleName("explore-PlaceSearch");
        Label searchLabel = new Label(i18n.searchLabel());
        searchBox = new TextBox();
        Button searchBtn = new Button(i18n.searchButton(), new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                doAsyncGeocoding();
            }
        });
        hPanel.add(searchLabel);
        hPanel.add(searchBox);
        hPanel.add(searchBtn);

        this.add(hPanel);
    }

    private void doAsyncGeocoding() {
        FindPlaceServiceAsync service = (FindPlaceServiceAsync) GWT.create(FindPlaceService.class);
        if (searchBox.getValue().trim().length() > 0) {
            service.findPlace(YUMACoreProperties.getObjectURI(), searchBox.getValue(),
                    new AsyncCallback<FindPlaceResponse>() {
                        @Override
                        public void onFailure(Throwable t) {
                            I18NErrorMessages errorMessages = (I18NErrorMessages) GWT
                                    .create(I18NErrorMessages.class);
                            MessageBox.error(errorMessages.error(), t.getMessage());
                        }

                        @Override
                        public void onSuccess(FindPlaceResponse r) {
                            if (r != null) {
                                StringBuffer html = new StringBuffer(
                                        POPUP_TEMPLATE.replace("@lat@", Double.toString(r.latlon.lat))
                                                .replace("@lon@", Double.toString(r.latlon.lon))
                                                .replace("@x@", Double.toString(r.xy.x))
                                                .replace("@y@", Double.toString(r.xy.y)));

                                for (String neighbour : r.neighbours) {
                                    html.append(neighbour + ";");
                                }
                                searchLayer.showSearchResultPopup(r.xy.x, r.xy.y, r.name, html.toString());
                            } else {
                                I18NErrorMessages errorMessages = (I18NErrorMessages) GWT
                                        .create(I18NErrorMessages.class);
                                MessageBox.error(errorMessages.error(), errorMessages.transformationError());
                            }
                        }
                    });
        }
    }

}