Synnefo » Pithos Android Client

/**

 * 

 */

package com.rackspace.cloud.android;

import java.util.ArrayList;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

import com.rackspace.cloud.android.R;

import com.rackspace.cloud.servers.api.client.CloudServersException;

import com.rackspace.cloud.servers.api.client.Server;

import com.rackspace.cloud.servers.api.client.ServerManager;

/**

 * @author Mike Mayo - mike.mayo@rackspace.com - twitter.com/greenisus

 * 

 */

public class ListServersActivity extends GaListActivity {

        private Server[] servers;

        private Context context;

        @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        trackPageView(GoogleAnalytics.PAGE_SERVERS);

        context = getApplicationContext();

        restoreState(savedInstanceState);

    }

        @Override

        protected void onSaveInstanceState(Bundle outState) {

                super.onSaveInstanceState(outState);

                outState.putSerializable("servers", servers);

        }

        private void restoreState(Bundle state) {

            if (state != null && state.containsKey("servers") && state.getSerializable("servers") != null) {

                        servers = (Server[]) state.getSerializable("servers");

                        if (servers.length == 0) {

                                displayNoServersCell();

                        } else {

                                getListView().setDividerHeight(1); // restore divider lines

                                setListAdapter(new ServerAdapter());

                        }

                } else {

                        loadServers();

                }

        }

        protected void onListItemClick(ListView l, View v, int position, long id) {

                if (servers != null && servers.length > 0) {

                        Intent viewIntent = new Intent(this, ViewServerActivity.class);

                        viewIntent.putExtra("server", servers[position]);

                        startActivityForResult(viewIntent, 55); // arbitrary number; never

                                                                                                        // used again

                }

        }

        private void loadServers() {

                displayLoadingCell();

                new LoadServersTask().execute((Void[]) null);

        }

        private void setServerList(ArrayList<Server> servers) {

                if (servers == null) {

                        servers = new ArrayList<Server>();

                }

                String[] serverNames = new String[servers.size()];

                this.servers = new Server[servers.size()];

                if (servers != null) {

                        for (int i = 0; i < servers.size(); i++) {

                                Server server = servers.get(i);

                                this.servers[i] = server;

                                serverNames[i] = server.getName();

                        }

                }

                if (serverNames.length == 0) {

                        displayNoServersCell();

                } else {

                        getListView().setDividerHeight(1); // restore divider lines

                        setListAdapter(new ServerAdapter());

                }

        }

        private void displayLoadingCell() {

                String a[] = new String[1];

                a[0] = "Loading...";

                setListAdapter(new ArrayAdapter<String>(this, R.layout.loadingcell,

                                R.id.loading_label, a));

                getListView().setTextFilterEnabled(true);

                getListView().setDividerHeight(0); // hide the dividers so it won't look

                                                                                        // like a list row

                getListView().setItemsCanFocus(false);

        }

        private void displayNoServersCell() {

                String a[] = new String[1];

                a[0] = "No Servers";

                setListAdapter(new ArrayAdapter<String>(this, R.layout.noserverscell,

                                R.id.no_servers_label, a));

                getListView().setTextFilterEnabled(true);

                getListView().setDividerHeight(0); // hide the dividers so it won't look

                                                                                        // like a list row

                getListView().setItemsCanFocus(false);

        }

        private void showAlert(String title, String message) {

                // Can't create handler inside thread that has not called

                // Looper.prepare()

                // Looper.prepare();

                try {

                        AlertDialog alert = new AlertDialog.Builder(this).create();

                        alert.setTitle(title);

                        alert.setMessage(message);

                        alert.setButton("OK", new DialogInterface.OnClickListener() {

                                public void onClick(DialogInterface dialog, int which) {

                                        return;

                                }

                        });

                        alert.show();

                } catch (Exception e) {

                        e.printStackTrace();

                }

        }

        private class LoadServersTask extends

                        AsyncTask<Void, Void, ArrayList<Server>> {

                private CloudServersException exception;

                @Override

                protected ArrayList<Server> doInBackground(Void... arg0) {

                        ArrayList<Server> servers = null;

                        try {

                                servers = (new ServerManager()).createList(true, context);

                        } catch (CloudServersException e) {

                                exception = e;

                        }

                        return servers;

                }

                @Override

                protected void onPostExecute(ArrayList<Server> result) {

                        if (exception != null) {

                                showAlert("Error", exception.getMessage());

                        }

                        setServerList(result);

                }

        }

        @Override

        public boolean onCreateOptionsMenu(Menu menu) {

                super.onCreateOptionsMenu(menu);

                MenuInflater inflater = getMenuInflater();

                inflater.inflate(R.menu.servers_list_menu, menu);

                return true;

        }

        @Override

        public boolean onOptionsItemSelected(MenuItem item) {

                switch (item.getItemId()) {

                case R.id.add_server:

                        startActivityForResult(new Intent(this, AddServerActivity.class),

                                        56); // arbitrary number; never used again

                        return true;

                case R.id.refresh:

                        servers = null;

                        loadServers();

                        return true;

                }

                return false;

        }

        // */

        class ServerAdapter extends ArrayAdapter<Server> {

                ServerAdapter() {

                        super(ListServersActivity.this, R.layout.listservercell, servers);

                }

                public View getView(int position, View convertView, ViewGroup parent) {

                        Server server = servers[position];

                        LayoutInflater inflater = getLayoutInflater();

                        View row = inflater.inflate(R.layout.listservercell, parent, false);

                        TextView label = (TextView) row.findViewById(R.id.label);

                        label.setText(server.getName());

                        TextView sublabel = (TextView) row.findViewById(R.id.sublabel);                        

                        sublabel.setText(server.getPublicIpAddresses()[0]);

                        ImageView icon = (ImageView) row.findViewById(R.id.icon);

                        icon.setImageResource(server.getImage().iconResourceId());

                        return (row);

                }

        }

        @Override

        public void onActivityResult(int requestCode, int resultCode, Intent data) {

                super.onActivityResult(requestCode, resultCode, data);

                if (resultCode == RESULT_OK) {

                        // a sub-activity kicked back, so we want to refresh the server list

                        loadServers();

                }

        }

}