ServerDetailActivity.java

package com.saikali.android_skwissh;

import org.json.JSONArray;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.saikali.android_skwissh.adapters.SensorsAdapter;
import com.saikali.android_skwissh.objects.SkwisshGraphTypeContent;
import com.saikali.android_skwissh.objects.SkwisshGraphTypeContent.SkwisshGraphTypeItem;
import com.saikali.android_skwissh.objects.SkwisshMeasureItem;
import com.saikali.android_skwissh.objects.SkwisshSensorItem;
import com.saikali.android_skwissh.objects.SkwisshServerContent.SkwisshServerItem;
import com.saikali.android_skwissh.objects.SkwisshServerGroupContent;
import com.saikali.android_skwissh.utils.Constants;
import com.saikali.android_skwissh.utils.SkwisshAjaxHelper;
import com.saikali.android_skwissh.utils.SkwisshAjaxHelper.UnauthorizedException;
import com.saikali.android_skwissh.widgets.pulltorefresh.PullToRefreshBase;
import com.saikali.android_skwissh.widgets.pulltorefresh.PullToRefreshBase.OnRefreshListener;
import com.saikali.android_skwissh.widgets.pulltorefresh.PullToRefreshExpandableListView;

public class ServerDetailActivity extends Activity {

	private PullToRefreshExpandableListView expandableList = null;
	private SensorsAdapter adapter;
	private SkwisshServerItem server;
	private String period;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
		this.setContentView(R.layout.activity_serverdetail_list);

		String server_id = this.getIntent().getExtras().getString("server_id");
		String group_id = this.getIntent().getExtras().getString("group_id");
		this.server = SkwisshServerGroupContent.ITEM_MAP.get(group_id).getServer(server_id);

		this.expandableList = (PullToRefreshExpandableListView) this.findViewById(R.id.pull_to_refresh_sensorslistview);
		this.expandableList.getRefreshableView().setGroupIndicator(null);
		this.expandableList.setShowIndicator(false);
		this.expandableList.setRefreshingLabel("Loading Skwissh sensors...");
		this.expandableList.setOnRefreshListener(new OnRefreshListener<ExpandableListView>() {
			@Override
			public void onRefresh(PullToRefreshBase<ExpandableListView> refreshView) {
				new SensorsLoader().execute();
			}
		});

		ImageView imageServerBar = (ImageView) this.findViewById(R.id.imageServerBar);
		if (this.server.isAvailable()) {
			imageServerBar.setBackgroundColor(Color.parseColor("#7FAE00"));
		} else {
			imageServerBar.setBackgroundColor(Color.parseColor("#D5383B"));
		}

		SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
		this.period = sharedPrefs.getString("default_period", "day");

		TextView serverDetailPeriod = (TextView) this.findViewById(R.id.serverDetailPeriod);
		serverDetailPeriod.setText("Last " + this.period);
		serverDetailPeriod.setTypeface(Typeface.createFromAsset(this.getAssets(), "fonts/Oxygen.otf"));

		TextView serverDetailName = (TextView) this.findViewById(R.id.serverDetailName);
		serverDetailName.setText(this.server.getHostname());
		serverDetailName.setTypeface(Typeface.createFromAsset(this.getAssets(), "fonts/Oxygen.otf"));

		TextView headerTitleText = (TextView) this.findViewById(R.id.headerTitleText);
		headerTitleText.setTypeface(Typeface.createFromAsset(this.getAssets(), "fonts/Days.otf"));

		TextView headerTitleTextSSH = (TextView) this.findViewById(R.id.headerTitleTextSSH);
		headerTitleTextSSH.setTypeface(Typeface.createFromAsset(this.getAssets(), "fonts/Days.otf"));

		TextView headerSubtitle = (TextView) this.findViewById(R.id.headerSubtitle);
		headerSubtitle.setTypeface(Typeface.createFromAsset(this.getAssets(), "fonts/Days.otf"));

		TextView pullToRefresh = (TextView) this.findViewById(R.id.pull_to_refresh_text);
		pullToRefresh.setTypeface(Typeface.createFromAsset(this.getAssets(), "fonts/Oxygen.otf"));

		this.adapter = new SensorsAdapter(this, this.server);
		this.expandableList.getRefreshableView().setAdapter(this.adapter);
		this.expandableList.setRefreshing();
		new SensorsLoader().execute();
	}

	@Override
	public void onBackPressed() {
		super.onBackPressed();
		this.overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		this.getMenuInflater().inflate(R.menu.activity_servers_list, menu);
		return true;
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);

		SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
		this.period = sharedPrefs.getString("default_period", "day");
		TextView serverDetailPeriod = (TextView) this.findViewById(R.id.serverDetailPeriod);
		serverDetailPeriod.setText("Last " + this.period);

		this.expandableList.setRefreshing();
		new SensorsLoader().execute();
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case R.id.menu_settings:
			this.startActivityForResult(new Intent(this, SettingsActivity.class), 0);
			return true;
		case R.id.menu_refresh:
			this.expandableList.setRefreshing();
			new SensorsLoader().execute();
			return true;
		}
		return false;
	}

	public class SensorsLoader extends AsyncTask<String, String, String> {

		Toast t = Toast.makeText(ServerDetailActivity.this, "", Toast.LENGTH_SHORT);

		@Override
		protected void onProgressUpdate(String... values) {
			this.t.setText(values[0]);
			this.t.show();
		};

		@Override
		protected String doInBackground(String... params) {
			try {
				this.publishProgress("Loading measures...");
				ServerDetailActivity.this.server.clearSensors();

				SkwisshAjaxHelper saj;
				try {
					saj = new SkwisshAjaxHelper(ServerDetailActivity.this.adapter.context);
				} catch (UnauthorizedException ue) {
					return ue.getMessage();
				}

				JSONArray jsonGraphTypes = saj.getJSONGraphTypes();
				for (int i = 0; i < jsonGraphTypes.length(); i++) {
					SkwisshGraphTypeContent.addItem(new SkwisshGraphTypeItem(jsonGraphTypes.getJSONObject(i)));
				}

				JSONArray jsonSensors = saj.getJSONSensors(ServerDetailActivity.this.adapter.getServer().getId());
				for (int j = 0; j < jsonSensors.length(); j++) {
					SkwisshSensorItem sensor = new SkwisshSensorItem(jsonSensors.getJSONObject(j), ServerDetailActivity.this.adapter.getServer());
					sensor.setGraphTypeName(SkwisshGraphTypeContent.ITEM_MAP.get(sensor.getGraphTypeId()).getName());
					this.publishProgress("Loading sensor '" + sensor.getDisplayName() + "'");
					JSONArray jsonMeasures = saj.getJSONMeasures(ServerDetailActivity.this.adapter.getServer(), sensor, ServerDetailActivity.this.period);
					for (int k = 0; k < jsonMeasures.length(); k++) {
						sensor.addMeasure(new SkwisshMeasureItem(jsonMeasures.getJSONObject(k)));
					}
					ServerDetailActivity.this.adapter.getServer().addSensor(sensor);
				}
				return "OK";
			} catch (Exception e) {
				Log.e(Constants.SKWISSH_TAG, "SensorsLoader", e);
				return e.getMessage();
			}
		}

		@Override
		protected void onPostExecute(String success) {
			this.t.cancel();
			if ("OK".equals(success)) {
				ServerDetailActivity.this.adapter.updateEntries();
			} else {
				AlertDialog alertDialog = new AlertDialog.Builder(ServerDetailActivity.this.adapter.context).create();
				alertDialog.setTitle("Error");
				alertDialog.setMessage("An error occured while loading Skwissh sensors for server " + ServerDetailActivity.this.adapter.getServer().getHostname() + ".\n\n" + success);
				alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
					}
				});
				alertDialog.show();
			}
			ServerDetailActivity.this.expandableList.onRefreshComplete();
		}
	}

}