Synnefo » Pithos Android Client

/**

 * 

 */

package com.rackspacecloud.android;

import java.util.Arrays;

import java.util.Iterator;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.AsyncTask;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ProgressBar;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.Spinner;

import android.widget.TextView;

import android.widget.AdapterView.OnItemSelectedListener;

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

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

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

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 AddServerActivity extends Activity implements OnItemSelectedListener, OnClickListener {

        private Image[] images;

        private Flavor[] flavors;

        private String selectedImageId;

        private String selectedFlavorId;

        private EditText serverName;

        private Spinner imageSpinner;

        private Spinner flavorSpinner;

        private Server server;

        private SeekBar numberBar;

        private TextView numberDisplay;

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

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.createserver);

        serverName = (EditText) findViewById(R.id.server_name);

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

        loadImageSpinner();

        loadFlavorSpinner();

        loadServerCount();

    }

    private void loadServerCount(){

            numberDisplay = (TextView)findViewById(R.id.server_count_text);

            numberBar = (SeekBar)findViewById(R.id.number_of_servers);

            numberBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

                        @Override

                        public void onStopTrackingTouch(SeekBar seekBar) {

                                // TODO Auto-generated method stub

                        }

                        @Override

                        public void onStartTrackingTouch(SeekBar seekBar) {

                                // TODO Auto-generated method stub

                        }

                        @Override

                        public void onProgressChanged(SeekBar seekBar, int progress,

                                        boolean fromUser) {

                                // TODO Auto-generated method stub

                                numberDisplay.setText(getCountText(progress));

                        }

                        private String getCountText(int i){

                                if(i == 0){

                                        return "1 Server";

                                }

                                else{

                                        //count starts at 0

                                        return i+1 + " Servers";

                                }

                        }

                });

    }

    private void loadImageSpinner() {

                imageSpinner = (Spinner) findViewById(R.id.image_spinner);

                imageSpinner.setOnItemSelectedListener(this);

                String imageNames[] = new String[Image.getImages().size()]; 

                images = new Image[Image.getImages().size()];

                Iterator<Image> iter = Image.getImages().values().iterator();

                int i = 0;

                while (iter.hasNext()) {

                        Image image = iter.next();

                        images[i] = image;

                        imageNames[i] = image.getName();

                        i++;

                }

                //Sort so they display better in the spinner

                Arrays.sort(images);

                Arrays.sort(imageNames);

                selectedImageId = images[0].getId();

                ArrayAdapter<String> imageAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, imageNames);

                imageAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

                imageSpinner.setAdapter(imageAdapter);

    }

    private void loadFlavorSpinner() {

                flavorSpinner = (Spinner) findViewById(R.id.flavor_spinner);

                flavorSpinner.setOnItemSelectedListener(this);

                String flavorNames[] = new String[Flavor.getFlavors().size()]; 

                flavors = new Flavor[Flavor.getFlavors().size()];

                Iterator<Flavor> iter = Flavor.getFlavors().values().iterator();

                int i = 0;

                while (iter.hasNext()) {

                        Flavor flavor = iter.next();

                        flavors[i] = flavor;

                        flavorNames[i] = flavor.getName() + ", " + flavor.getDisk() + " GB disk";

                        i++;

                }

                selectedFlavorId = flavors[0].getId();

                ArrayAdapter<String> flavorAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, flavorNames);

                flavorAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

                flavorSpinner.setAdapter(flavorAdapter);

    }

        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

                if (parent == imageSpinner) {

                        selectedImageId = images[position].getId();

                } else if (parent == flavorSpinner) {

                        selectedFlavorId = flavors[position].getId();

                }

        }

        public void onNothingSelected(AdapterView<?> parent) {

        }

        public void onClick(View arg0) {

                if ("".equals(serverName.getText().toString())) {

                        showAlert("Required Fields Missing", "Server name is required.");

                } else {

                        showActivityIndicators();

                        server = new Server();

                        server.setName(serverName.getText().toString());

                        server.setImageId(selectedImageId);

                        server.setFlavorId(selectedFlavorId);

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

                }

        }

    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 void setActivityIndicatorsVisibility(int visibility) {

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

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

        pb.setVisibility(visibility);

        tv.setVisibility(visibility);

    }

    private void showActivityIndicators() {

            setActivityIndicatorsVisibility(View.VISIBLE);

    }

    private void hideActivityIndicators() {

            setActivityIndicatorsVisibility(View.INVISIBLE);

    }

    private class SaveServerTask extends AsyncTask<Void, Void, Server> {

                private CloudServersException exception;

                @Override

                protected Server doInBackground(Void... arg0) {

                        try {

                                if(numberBar.getProgress() == 0){

                                        (new ServerManager()).create(server, getApplicationContext());

                                }

                                else{

                                        for(int i = 0; i < numberBar.getProgress() + 1; i++){

                                                server.setName(serverName.getText().toString() + Integer.toString(i+1));

                                                (new ServerManager()).create(server, getApplicationContext());

                                        }

                                }

                        } catch (CloudServersException e) {

                                exception = e;

                        }

                        return server;

                }

                @Override

                protected void onPostExecute(Server result) {

                        if (exception != null) {

                                showAlert("Error", "There was a problem creating your server: " + exception.getMessage());

                        } else {

                                hideActivityIndicators();

                                setResult(Activity.RESULT_OK);

                                finish();

                        }

                }

    }

}