com.blubb.andcw.AndCWActivity.java Source code

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Here is the source code for com.blubb.andcw.AndCWActivity.java

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/**
 * Copyright (C) 2012 Thomas Butter
 *  
 * 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 com.blubb.andcw;

import java.util.concurrent.Future;

import android.app.ListActivity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.DataSetObserver;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.cloudwatch.AmazonCloudWatchAsyncClient;
import com.amazonaws.services.cloudwatch.AmazonCloudWatchClient;
import com.amazonaws.services.cloudwatch.model.Dimension;
import com.amazonaws.services.cloudwatch.model.ListMetricsRequest;
import com.amazonaws.services.cloudwatch.model.ListMetricsResult;
import com.amazonaws.services.cloudwatch.model.Metric;

public class AndCWActivity extends ListActivity {

    private AWSCredentials getAWSCredentials() {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
        if (prefs.getString("access_key", "XX").equals("XX"))
            return null;
        return new BasicAWSCredentials(prefs.getString("access_key", "XX"), prefs.getString("secret_key", "XX"));
    }

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        setListAdapter(new MetricsListAdapter());

        ListView lv = getListView();
        lv.setTextFilterEnabled(true);

        lv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Intent intent = new Intent(AndCWActivity.this, ChartBuilder.class);
                intent.putExtra("metric", ((Metric) getListAdapter().getItem(position)).getMetricName());

                intent.putExtra("dimension",
                        ((Dimension) ((Metric) getListAdapter().getItem(position)).getDimensions().get(0))
                                .getName());
                intent.putExtra("dimensionvalue",
                        ((Dimension) ((Metric) getListAdapter().getItem(position)).getDimensions().get(0))
                                .getValue());
                intent.putExtra("namespace", ((Metric) getListAdapter().getItem(position)).getNamespace());
                startActivity(intent);
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.aboutMenu:
            Intent about = new Intent(this, About.class);
            startActivity(about);
            break;
        }
        return true;
    }

    public class MetricsListAdapter extends BaseAdapter {
        ListMetricsResult res;

        public MetricsListAdapter() {
            try {
                AmazonCloudWatchAsyncClient acw = new AmazonCloudWatchAsyncClient(getAWSCredentials());
                if (acw != null) {
                    Future<ListMetricsResult> fres = acw.listMetricsAsync(new ListMetricsRequest());
                    res = fres.get(); // FIXME
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            if (res == null) {
                AndCWActivity.this.startActivity(new Intent(AndCWActivity.this, Prefs.class));
                AndCWActivity.this.finish();
            }
        }

        public int getCount() {
            if (res == null)
                return 0;
            return res.getMetrics().size();
        }

        public Object getItem(int position) {
            return res.getMetrics().get(position);
        }

        public long getItemId(int position) {
            return position;
        }

        public int getItemViewType(int position) {
            return 0;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            TextView tv = new TextView(AndCWActivity.this);
            tv.setPadding(0, 10, 0, 10);
            Metric m = (Metric) getItem(position);
            Dimension d = (Dimension) m.getDimensions().get(0);
            tv.setText(m.getMetricName() + " - " + d.getName() + " " + d.getValue());
            return tv;
        }

        public int getViewTypeCount() {
            return 1;
        }

        public boolean hasStableIds() {
            return true;
        }

        public boolean isEmpty() {
            if (res == null)
                return true;
            if (res.getMetrics().isEmpty())
                return true;
            return false;
        }

        public void registerDataSetObserver(DataSetObserver observer) {
        }

        public void unregisterDataSetObserver(DataSetObserver observer) {
        }

        public boolean areAllItemsEnabled() {
            return true;
        }

        public boolean isEnabled(int position) {
            return true;
        }
    }
}