ServersListActivity.java

package com.saikali.android_skwissh;

import org.json.JSONArray;

import android.app.AlertDialog;
import android.app.ExpandableListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.Toast;

import com.saikali.android_skwissh.adapters.ServersAdapter;
import com.saikali.android_skwissh.objects.SkwisshGraphTypeContent;
import com.saikali.android_skwissh.objects.SkwisshGraphTypeContent.SkwisshGraphTypeItem;
import com.saikali.android_skwissh.objects.SkwisshServerContent.SkwisshServerItem;
import com.saikali.android_skwissh.objects.SkwisshServerGroupContent;
import com.saikali.android_skwissh.objects.SkwisshServerGroupContent.SkwisshServerGroupItem;
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 ServersListActivity extends ExpandableListActivity {

	private PullToRefreshExpandableListView expandableList = null;
	private ServersAdapter adapter;

	@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_servers_list);

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

		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 ServersAdapter(this);
		this.expandableList.getRefreshableView().setAdapter(this.adapter);
		this.expandableList.setRefreshing();
		new ServersLoader().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);
		this.expandableList.setRefreshing();
		new ServersLoader().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 ServersLoader().execute();
			return true;
		}
		return false;
	}

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

		Toast t = Toast.makeText(ServersListActivity.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 servers...");
				SkwisshServerGroupContent.ITEMS.clear();
				SkwisshServerGroupContent.ITEM_MAP.clear();

				SkwisshAjaxHelper saj;
				try {
					saj = new SkwisshAjaxHelper(ServersListActivity.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 jsonServerGroups = saj.getJSONServerGroups();
				for (int l = 0; l < jsonServerGroups.length(); l++) {
					SkwisshServerGroupItem server_group = new SkwisshServerGroupItem(jsonServerGroups.getJSONObject(l));

					JSONArray jsonServers = saj.getJSONServers(server_group.getId());
					for (int i = 0; i < jsonServers.length(); i++) {

						SkwisshServerItem server = new SkwisshServerItem(jsonServers.getJSONObject(i), server_group);
						this.publishProgress("Loading server '" + server.getHostname() + "'");
						server_group.addServer(server);
					}
					if (server_group.getServers().size() != 0) {
						SkwisshServerGroupContent.addItem(server_group);
					}
				}

				SkwisshServerGroupItem server_group = new SkwisshServerGroupItem();
				JSONArray jsonServers = saj.getJSONServers("999999");
				for (int i = 0; i < jsonServers.length(); i++) {
					SkwisshServerItem server = new SkwisshServerItem(jsonServers.getJSONObject(i), server_group);
					server_group.addServer(server);
				}
				if (server_group.getServers().size() != 0) {
					SkwisshServerGroupContent.addItem(server_group);
				}

				return "OK";
			} catch (Exception e) {
				Log.e(Constants.SKWISSH_TAG, "ServersLoader", e);
				return e.getMessage();
			}
		}

		@Override
		protected void onPostExecute(String success) {
			this.t.cancel();
			if ("OK".equals(success)) {
				ServersListActivity.this.adapter.updateEntries();
				for (int i = 0; i < ServersListActivity.this.adapter.getGroupCount(); i++) {
					ServersListActivity.this.expandableList.getRefreshableView().expandGroup(i);
				}
			} else {
				AlertDialog alertDialog = new AlertDialog.Builder(ServersListActivity.this.adapter.context).create();
				alertDialog.setTitle("Error");
				alertDialog.setMessage("An error occured while loading Skwissh data.\n\n" + success);
				alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
					}
				});
				alertDialog.show();
			}
			ServersListActivity.this.expandableList.onRefreshComplete();
		}
	}
}