Synnefo » Pithos Android Client

package com.rackspacecloud.android;

import java.util.ArrayList;

import java.util.TreeMap;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import android.os.AsyncTask;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.TextView.OnEditorActionListener;

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;

public class RackspaceCloudActivity extends Activity implements View.OnClickListener, OnEditorActionListener {

        private static final String OPT_USERNAME = "username";

        private static final String OPT_USERNAME_DEF = "";

        private static final String OPT_API_KEY = "apiKey";

        private static final String OPT_API_KEY_DEF = "";

        private Intent tabViewIntent;

        private boolean authenticating;

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        ((Button) findViewById(R.id.button)).setOnClickListener(this);

        ((EditText) findViewById(R.id.login_apikey)).setOnEditorActionListener(this);

        loadLoginPreferences();

        restoreState(savedInstanceState);

        // use the TabViewActivity when Cloud Files is added

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

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

    }

        @Override

        protected void onSaveInstanceState(Bundle outState) {

                super.onSaveInstanceState(outState);

                outState.putBoolean("authenticating", authenticating);

        }

    private void restoreState(Bundle state) {

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

                    showActivityIndicators();

            } else {

                    hideActivityIndicators();

            }

    }

    public void login() {

            if (hasValidInput()) {

                showActivityIndicators();

                setLoginPreferences();

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

            } else {

                    showAlert("Fields Missing", "User Name and API Key are required.");

            }

    }

    public void onClick(View view) {

            login();

    }

        public boolean onEditorAction(TextView arg0, int arg1, KeyEvent arg2) {

                login();

                return false;

        }    

        private void loadLoginPreferences() {

            SharedPreferences sp = this.getPreferences(Context.MODE_PRIVATE);

            String username = sp.getString(OPT_USERNAME, OPT_USERNAME_DEF);            

            String apiKey = sp.getString(OPT_API_KEY, OPT_API_KEY_DEF);

            EditText usernameText = (EditText) findViewById(R.id.login_username);

            usernameText.setText(username);

            EditText apiKeyText = (EditText) findViewById(R.id.login_apikey);

            apiKeyText.setText(apiKey);

    }

    private void setLoginPreferences() {

            String username = ((EditText) findViewById(R.id.login_username)).getText().toString();

            String apiKey = ((EditText) findViewById(R.id.login_apikey)).getText().toString();

            Account.setUsername(username);

            Account.setApiKey(apiKey);

            Editor e = this.getPreferences(Context.MODE_PRIVATE).edit();

            e.putString(OPT_USERNAME, username);

            e.putString(OPT_API_KEY, apiKey);

            e.commit();                

    }

    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();

                hideActivityIndicators();

    }

    private boolean hasValidInput() {

            String username = ((EditText) findViewById(R.id.login_username)).getText().toString();

            String apiKey = ((EditText) findViewById(R.id.login_apikey)).getText().toString();

            return !"".equals(username) && !"".equals(apiKey);

    }

    private void setActivityIndicatorsVisibility(int visibility) {

        ProgressBar pb = (ProgressBar) findViewById(R.id.login_progress_bar);

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

        pb.setVisibility(visibility);

        tv.setVisibility(visibility);

    }

    private void showActivityIndicators() {

            setActivityIndicatorsVisibility(View.VISIBLE);

    }

    private void hideActivityIndicators() {

            setActivityIndicatorsVisibility(View.INVISIBLE);

    }

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

                @Override

                protected Boolean doInBackground(Void... arg0) {

                        authenticating = true;

                        return new Boolean(Authentication.authenticate());

                }

                @Override

                protected void onPostExecute(Boolean result) {

                        authenticating = false;

                        if (result.booleanValue()) {

                                //startActivity(tabViewIntent);

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

                        } else {

                                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);

                }

                @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);

                                startActivity(tabViewIntent);

                        } else {

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

                        }

                        hideActivityIndicators();

                }

    }

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

                @Override

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

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

                }

                @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 {

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

                        }

                        //hideActivityIndicators();

                }

    }

}