Synnefo » Pithos Android Client

package com.rackspacecloud.android;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.StreamCorruptedException;

import java.util.ArrayList;

import java.util.TreeMap;

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

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

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

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

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

import com.rackspace.cloud.servers.api.client.http.Authentication;

import android.app.AlertDialog;

import android.app.ListActivity;

import android.app.ProgressDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

import android.view.ContextMenu;

import android.view.ContextMenu.ContextMenuInfo;

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.AdapterView.AdapterContextMenuInfo;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

public class ListAccountsActivity extends ListActivity{

        private ArrayList<Account> accounts;

        private final String FILENAME = "accounts.data";

        private Intent tabViewIntent;

        private boolean authenticating;

        private ProgressDialog dialog;

        private Context context;

        public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        onRestoreInstanceState(savedInstanceState);

        //restoreState(savedInstanceState);

        registerForContextMenu(getListView());

        context = getApplicationContext();

        tabViewIntent = new Intent(this, TabViewActivity.class);

    }

        @Override

        protected void onSaveInstanceState(Bundle outState) {

                super.onSaveInstanceState(outState);

                outState.putBoolean("authenticating", authenticating);

                //need to set authenticating back to true because it is set to false

                //in hideDialog()

                if(authenticating){

                        hideDialog();

                        authenticating = true;

                }

                writeAccounts();

        }

        @Override

        protected void onRestoreInstanceState(Bundle state) {

                if (state != null && state.containsKey("authenticating") && state.getBoolean("authenticating")) {

                    showDialog();

            } else {

                    hideDialog();

            }

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

                    accounts = readAccounts();

                    if (accounts.size() == 0) {

                            displayNoAccountsCell();

                    } else {

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

                            setListAdapter(new AccountAdapter());

                    }

            } else {

            loadAccounts();        

            }         

    }

        @Override

        protected void onStart(){

                super.onStart();

                if(authenticating){

                        showDialog();

                }

        }

        @Override

        protected void onStop(){

                super.onStop();

                if(authenticating){

                        hideDialog();

                        authenticating = true;

                }

        }

        private void loadAccounts() {

                //check and see if there are any in memory

                if(accounts == null){

                        accounts = readAccounts();

                }

                //if nothing was written before accounts will still be null

                if(accounts == null){

                        accounts = new ArrayList<Account>();

                }

                setAccountList();

        }

        private void setAccountList() {

                if (accounts.size() == 0) {

                        displayNoAccountsCell();

                } else {

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

                        this.setListAdapter(new AccountAdapter());

                }

        }

        private void writeAccounts(){

                FileOutputStream fos;

                ObjectOutputStream out = null;

                try{

                        fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);

                        out = new ObjectOutputStream(fos);

                        out.writeObject(accounts);

                        out.flush();

                        out.close();

                } catch (FileNotFoundException e) {

                        showAlert("Error", "Could not save accounts.");

                        e.printStackTrace();

                } catch (IOException e) {

                        showAlert("Error", "Could not save accounts.");

                        e.printStackTrace();

                }

        }

        private ArrayList<Account> readAccounts(){

                FileInputStream fis;

                ObjectInputStream in;

                try {

                        fis = openFileInput(FILENAME);

                        in = new ObjectInputStream(fis);

                        ArrayList<Account> file = (ArrayList<Account>)in.readObject();

                        in.close();

                        return file;

                } catch (FileNotFoundException e) {

                        //showAlert("Error", "Could not load accounts.");

                        e.printStackTrace();

                        return null;

                } catch (StreamCorruptedException e) {

                        showAlert("Error", "Could not load accounts.");

                        e.printStackTrace();

                } catch (IOException e) {

                        showAlert("Error", "Could not load accounts.");

                        e.printStackTrace();

                } catch (ClassNotFoundException e) {

                        showAlert("Error", "Could not load accounts.");

                        e.printStackTrace();

                }

                return null;

        }

        private void displayNoAccountsCell() {

            String a[] = new String[1];

            a[0] = "No Accounts";

        setListAdapter(new ArrayAdapter<String>(getApplicationContext(), R.layout.noaccountscell, R.id.no_accounts_label, a));

        getListView().setTextFilterEnabled(true);

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

        getListView().setItemsCanFocus(false);

    }

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

                if (accounts != null && accounts.size() > 0) {

                        //setActivityIndicatorsVisibility(View.VISIBLE, v);

                        Account.setAccount(accounts.get(position));

                        login();

                }                

    }

        public void login() {

        //showActivityIndicators();

        //setLoginPreferences();

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

    }

        //setup menu for when menu button is pressed

        public boolean onCreateOptionsMenu(Menu menu) {

                super.onCreateOptionsMenu(menu);

                MenuInflater inflater = getMenuInflater();

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

                return true;

        } 

    @Override 

    //in options menu, when add account is selected go to add account activity

    public boolean onOptionsItemSelected(MenuItem item) {

                switch (item.getItemId()) {

                case R.id.add_account:

                        startActivityForResult(new Intent(this, AddAccountActivity.class), 78); // arbitrary number; never used again

                        return true;

                }

                return false;

        } 

    //the context menu for a long press on an account

        public void onCreateContextMenu(ContextMenu menu, View v,

                        ContextMenuInfo menuInfo) {

                super.onCreateContextMenu(menu, v, menuInfo);

                MenuInflater inflater = getMenuInflater();

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

        }

        //removes the selected account from account list if remove is clicked

        public boolean onContextItemSelected(MenuItem item) {

                AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();

                accounts.remove(info.position);

                writeAccounts();

                loadAccounts();

                return true;

        }

        class AccountAdapter extends ArrayAdapter<Account> {

                AccountAdapter() {

                        super(ListAccountsActivity.this, R.layout.listaccountcell, accounts);

                }

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

                        LayoutInflater inflater = getLayoutInflater();

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

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

                        label.setText(accounts.get(position).getUsername());

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

                        sublabel.setText(getAccountServer(accounts.get(position)));

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

                        icon.setImageResource(setAccountIcon(accounts.get(position)));

                        return row;

                }

        }

        public String getAccountServer(Account account){

                String authServer = account.getAuthServer();

                String result;

                if(authServer.equals(Preferences.COUNTRY_UK_AUTH_SERVER)){

                        result = "Rackspace Cloud (UK)";

                }

                else if(authServer.equals(Preferences.COUNTRY_US_AUTH_SERVER)){

                        result = "Rackspace Cloud (US)";

                }

                else{

                        result = "Custom";

                        //setCustomIcon();

                }

                return result;

        }

        //display rackspace logo for cloud accounts and openstack logo for others

        private int setAccountIcon(Account account){

                if(account.getAuthServer().equals(Preferences.COUNTRY_UK_AUTH_SERVER) 

                                || account.getAuthServer().equals(Preferences.COUNTRY_US_AUTH_SERVER)){

                        return R.drawable.rackspacecloud_icon;

                }

                else{

                        return R.drawable.openstack_icon;

                }

        }

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

                super.onActivityResult(requestCode, resultCode, data);

                if (resultCode == RESULT_OK && requestCode == 78) {          

                        Account acc = new Account();

                        Bundle b = data.getBundleExtra("accountInfo");

                        acc.setApiKey(b.getString("apiKey"));

                        acc.setUsername(b.getString("username"));

                        acc.setAuthServer(b.getString("server"));

                        accounts.add(acc);

                        writeAccounts();

                        loadAccounts();

                }

        }        

/*

        private void setActivityIndicatorsVisibility(int visibility) {

                //FINISH THIS TO LET USER KNOW PROGRAM IS STILL WORKING

        //ProgressBar pb = new ProgressBar();

            //TextView tv = (TextView) findViewById(R.id.login_authenticating_label);

        //pb.setVisibility(visibility);

        //tv.setVisibility(visibility);

    }

        private void setActivityIndicatorsVisibility(int visibility, View v) {

                //FINISH THIS TO LET USER KNOW PROGRAM IS STILL WORKING

        //ProgressBar pb = new ProgressBar();

            //TextView tv = (TextView) findViewById(R.id.login_authenticating_label);

        //pb.setVisibility(visibility);

        //tv.setVisibility(visibility);

    }

*/

        private void showDialog() {

                authenticating = true;

                dialog = ProgressDialog.show(ListAccountsActivity.this, "", "Authenticating...", true);

    }

    private void hideDialog() {

            if(dialog != null){

                    dialog.dismiss();

            }

            authenticating = false;

    }

        private class AuthenticateTask extends AsyncTask<Void, Void, Boolean> {

                @Override

                protected void onPreExecute(){

                        showDialog();

                }

                @Override

                protected Boolean doInBackground(Void... arg0) {

                        return new Boolean(Authentication.authenticate(context));

                        //return true;

                }

                @Override

                protected void onPostExecute(Boolean result) {

                        if (result.booleanValue()) {

                                //startActivity(tabViewIntent);

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

                        } else {

                                hideDialog();

                                showAlert("Login Failure", "Authentication failed.  Please check your User Name and API Key.");

                        }

                }

    }

    private class LoadFlavorsTask extends AsyncTask<Void, Void, ArrayList<Flavor>> {

                @Override

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

                        return (new FlavorManager()).createList(true, context);

                }

                @Override

                protected void onPostExecute(ArrayList<Flavor> result) {

                        if (result != null && result.size() > 0) {

                                TreeMap<String, Flavor> flavorMap = new TreeMap<String, Flavor>();

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

                                        Flavor flavor = result.get(i);

                                        flavorMap.put(flavor.getId(), flavor);

                                }

                                Flavor.setFlavors(flavorMap);

                                hideDialog();

                                startActivity(tabViewIntent);

                        } else {

                                hideDialog();

                                showAlert("Login Failure", "There was a problem loading server flavors.  Please try again.");

                        }

                }

    }

    private class LoadImagesTask extends AsyncTask<Void, Void, ArrayList<Image>> {

                @Override

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

                        return (new ImageManager()).createList(true, context);

                }

                @Override

                protected void onPostExecute(ArrayList<Image> result) {

                        if (result != null && result.size() > 0) {

                                TreeMap<String, Image> imageMap = new TreeMap<String, Image>();

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

                                        Image image = result.get(i);

                                        imageMap.put(image.getId(), image);

                                }

                                Image.setImages(imageMap);

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

                                //startActivity(tabViewIntent);

                        } else {

                                hideDialog();

                                showAlert("Login Failure", "There was a problem loading server images.  Please try again.");

                        }

                }

    }

    private void showAlert(String title, String message) {

                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();

    }

}