Synnefo » Pithos Android Client

package com.rackspacecloud.android;

import org.apache.http.HttpResponse;

import com.rackspace.cloud.loadbalancer.api.client.Algorithm;

import com.rackspace.cloud.loadbalancer.api.client.LoadBalancer;

import com.rackspace.cloud.loadbalancer.api.client.LoadBalancerManager;

import com.rackspace.cloud.loadbalancer.api.client.Protocol;

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

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

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

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.Spinner;

import android.widget.AdapterView.OnItemSelectedListener;

public class EditLoadBalancerActivity extends CloudActivity implements OnItemSelectedListener {

        private LoadBalancer loadBalancer;

        private Protocol[] protocols;

        private Algorithm[] algorithms;

        private Spinner protocolSpinner;

        private Spinner algorithmSpinner;

        private String selectedProtocol;

        private String selectedAlgorithm;

        private String selectedPort;

        private String selectedName;

        private EditText name;

        private EditText portText;

        @Override

        public void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

                loadBalancer = (LoadBalancer) this.getIntent().getExtras().get("loadBalancer");

                setContentView(R.layout.updateloadbalancer);

                restoreState(savedInstanceState);

        }

        @Override

        protected void onSaveInstanceState(Bundle outState) {

                super.onSaveInstanceState(outState);

                outState.putSerializable("loadBalancer", loadBalancer);

                outState.putString("selectedProtocol", selectedProtocol);

                outState.putString("selectedAlgorithm", selectedAlgorithm);

                outState.putString("selectedPort", selectedPort);

                outState.putString("selectedName", selectedName);

        }

        protected void restoreState(Bundle state) {

                super.restoreState(state);

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

                        loadBalancer = (LoadBalancer) state.getSerializable("loadBalancer");

                }

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

                        selectedProtocol = state.getString("selectedProtocol");

                } else {

                        selectedProtocol = loadBalancer.getProtocol();

                }

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

                        selectedAlgorithm = state.getString("selectedAlgorithm");

                } else {

                        selectedAlgorithm = loadBalancer.getAlgorithm();

                }

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

                        selectedPort = state.getString("selectedPort");

                } else {

                        selectedPort = loadBalancer.getPort();

                }

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

                        selectedName = state.getString("selectedName");

                } else {

                        selectedName = loadBalancer.getName();

                }

                setupInputs();

        }

        private void setupInputs(){

                loadProtocolSpinner();

                loadAlgorithmSpinner();

                name = (EditText) findViewById(R.id.edit_lb_name_text);

                name.setText(selectedName);

                portText = (EditText) findViewById(R.id.edit_port_text);

                portText.setText(selectedPort);

                Button submit = (Button)findViewById(R.id.update_lb_button);

                submit.setOnClickListener(new OnClickListener() {

                        @Override

                        public void onClick(View v) {

                                selectedPort = portText.getText().toString();

                                if(validPort()) {

                                        new UpdateLoadBalancerTask().execute();

                                } else {

                                        showAlert("Error", "Must have a protocol port number that is between 1 and 65535.");

                                }

                        }

                });

        }

        private boolean validPort(){

                return !selectedPort.equals("") && Integer.valueOf(selectedPort) > 0 && Integer.valueOf(selectedPort) < 65536;

        }

        private void loadProtocolSpinner() {

                protocolSpinner = (Spinner) findViewById(R.id.edit_protocol_spinner);

                protocolSpinner.setOnItemSelectedListener(this);

                String protocolNames[] = new String[Protocol.getProtocols().size()]; 

                protocols = new Protocol[Protocol.getProtocols().size()];

                /*

                 * set the spinner to the current value

                 * so user doesnt have to remember

                 */

                int defaultPosition = 0;

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

                        protocols[i] = Protocol.getProtocols().get(i);

                        protocolNames[i] = Protocol.getProtocols().get(i).getName();

                        if(protocolNames[i].equals(selectedProtocol)){

                                defaultPosition = i;

                        }

                }

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

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

                protocolSpinner.setAdapter(protocolAdapter);

                protocolSpinner.setSelection(defaultPosition);

        }

        private void loadAlgorithmSpinner() {

                algorithmSpinner = (Spinner) findViewById(R.id.edit_algorithm_spinner);

                algorithmSpinner.setOnItemSelectedListener(this);

                String algorithmNames[] = new String[Algorithm.getAlgorithms().size()]; 

                algorithms = new Algorithm[Algorithm.getAlgorithms().size()];

                /*

                 * set the spinner to the current value

                 * so user doesnt have to remember

                 */

                int defaultPosition = 0;

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

                        algorithms[i] = Algorithm.getAlgorithms().get(i);

                        algorithmNames[i] = Algorithm.getAlgorithms().get(i).getName();

                        if(algorithmNames[i].equals(selectedAlgorithm)){

                                defaultPosition = i;

                        }

                }

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

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

                algorithmSpinner.setAdapter(algorithmAdapter);

                algorithmSpinner.setSelection(defaultPosition);

        }

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

                if (parent == protocolSpinner) {

                        selectedProtocol = protocols[position].getName();

                }

                else if (parent == algorithmSpinner){

                        selectedAlgorithm = algorithms[position].getName();

                }

        }

        public void onNothingSelected(AdapterView<?> parent) {

        }

        private class UpdateLoadBalancerTask extends AsyncTask<Void, Void, HttpBundle> {

                private CloudServersException exception;

                @Override

                protected void onPreExecute(){

                        showDialog();

                }

                @Override

                protected HttpBundle doInBackground(Void... arg0) {

                        HttpBundle bundle = null;        

                        try {

                                bundle = (new LoadBalancerManager(getContext())).update(loadBalancer, name.getText().toString(), selectedAlgorithm, 

                                                selectedProtocol, portText.getText().toString());

                        } catch (CloudServersException e) {

                                exception = e;

                        }

                        return bundle;

                }

                @Override

                protected void onPostExecute(HttpBundle bundle) {

                        hideDialog();

                        HttpResponse response = bundle.getResponse();

                        if (response != null) {

                                int statusCode = response.getStatusLine().getStatusCode();                        

                                if(statusCode == 202){

                                        setResult(RESULT_OK);

                                        finish();

                                }

                                else{

                                        CloudServersException cse = parseCloudServersException(response);

                                        if ("".equals(cse.getMessage())) {

                                                showError("There was a problem updating your load balancer.", bundle);

                                        } else {

                                                showError("There was a problem updating your load balancer: " + cse.getMessage(), bundle);

                                        }                                        

                                }

                        } else if (exception != null) {

                                showError("There was a problem updating your load balancer: " + exception.getMessage(), bundle);

                        }

                }

        }

}