org.n52.geoar.data.sos.SOSFeatureVisualization.java Source code

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Here is the source code for org.n52.geoar.data.sos.SOSFeatureVisualization.java

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/**
 * Copyright 2012 52North Initiative for Geospatial Open Source Software GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.n52.geoar.data.sos;

import java.io.InputStream;
import java.util.Date;
import java.util.List;
import java.util.concurrent.Callable;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.n52.geoar.data.R;
import org.n52.geoar.data.sos.SOSResponse.CapabilitiesResult;
import org.n52.geoar.data.sos.SOSResponse.Observation;
import org.n52.geoar.data.sos.SOSResponse.Offering;
import org.n52.geoar.data.sos.view.SOSObservationView;
import org.n52.geoar.data.sos.view.SOSObservationView.ObservationCallable;
import org.n52.geoar.newdata.Annotations.PluginContext;
import org.n52.geoar.newdata.Annotations.SharedHttpClient;
import org.n52.geoar.newdata.SpatialEntity2;
import org.n52.geoar.newdata.Visualization;

import com.vividsolutions.jts.geom.Geometry;

import android.content.Context;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TabHost;
import android.widget.TextView;

public class SOSFeatureVisualization implements Visualization.FeatureVisualization {

    private class ViewHolder {
        FOI featureOfInterest;
        TextView textViewServiceSensorId;
        TextView textViewDescription;
        public TextView textViewName;
        Callable<CapabilitiesResult> capabilitiesCallable = new Callable<CapabilitiesResult>() {
            @Override
            public CapabilitiesResult call() throws Exception {
                return SOSUtils.getCapabilities(mHttpClient, featureOfInterest.serviceUrl).get();
            }
        };
        ObservationCallable observationCallable = new ObservationCallable() {
            @Override
            protected List<Observation> call(Offering offering, Date begin, Date end) throws Exception {
                HttpPost httpPost = new HttpPost(featureOfInterest.serviceUrl);
                httpPost.setHeader("Content-Type", "text/xml");

                ByteArrayEntity requestEntity = new ByteArrayEntity(SOSRequest
                        .createObservationRequestXML(offering, null, begin, end, featureOfInterest).toByteArray());
                httpPost.setEntity(requestEntity);

                HttpResponse response = mHttpClient.execute(httpPost);
                HttpEntity responseEntity = response.getEntity();
                InputStream content = responseEntity.getContent();
                List<Observation> result = SOSResponse.processObservationResponse(content);
                content.close();

                return result;
            }
        };
        public SOSObservationView sosObservationView;

    }

    @PluginContext
    private Context context;

    @SharedHttpClient
    private DefaultHttpClient mHttpClient;

    @Override
    public String getTitle(SpatialEntity2<? extends Geometry> entity) {
        if (entity instanceof FOI)
            return "Feature " + ((FOI) entity).id;
        return "";
    }

    @Override
    public String getDescription(SpatialEntity2<? extends Geometry> entity) {
        return null;
    }

    @Override
    public View getFeatureView(SpatialEntity2<? extends Geometry> entity, View convertView, ViewGroup parentView,
            Context activityContext) {
        ViewHolder viewHolder;

        if (convertView == null) {
            convertView = LayoutInflater.from(activityContext).inflate(R.layout.sos_featureview, null);
            viewHolder = new ViewHolder();

            viewHolder.textViewServiceSensorId = (TextView) convertView.findViewById(R.id.textViewServiceSensorId);
            viewHolder.textViewDescription = (TextView) convertView.findViewById(R.id.textViewDescription);
            viewHolder.textViewName = (TextView) convertView.findViewById(R.id.textViewName);

            viewHolder.sosObservationView = (SOSObservationView) convertView.findViewById(R.id.sosObservationView);
            viewHolder.sosObservationView.setCapabilitiesCallable(viewHolder.capabilitiesCallable);
            viewHolder.sosObservationView.setObservationCallable(viewHolder.observationCallable);
            viewHolder.sosObservationView.setActivityContext(activityContext);

            TabHost tabHost = (TabHost) convertView.findViewById(android.R.id.tabhost);
            tabHost.setup();
            tabHost.addTab(tabHost.newTabSpec("FOI").setIndicator("Feature").setContent(R.id.scrollViewFOI));
            tabHost.addTab(tabHost.newTabSpec("SOS").setIndicator("Observations").setContent(R.id.layoutSOS));

            tabHost.setCurrentTab(0);

            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        if (entity instanceof FOI) {
            viewHolder.featureOfInterest = (FOI) entity;
            viewHolder.textViewName.setText(viewHolder.featureOfInterest.name);
            if (viewHolder.featureOfInterest.description != null) {
                viewHolder.textViewDescription.setText(Html.fromHtml(viewHolder.featureOfInterest.description));
            }
            viewHolder.textViewServiceSensorId.setText(viewHolder.featureOfInterest.id);
        }
        return convertView;
    }

    @Override
    public View getFeatureDetailView(SpatialEntity2<? extends Geometry> entity, View convertView,
            ViewGroup parentView, Context activityContext) {
        // TODO Auto-generated method stub
        return null;
    }

}