Synnefo » Pithos Android Client

package com.rackspace.cloud.android;

import java.util.ArrayList;

import org.apache.http.HttpResponse;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.Dialog;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

import com.rackspace.cloud.android.R;

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

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

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

import com.rackspace.cloud.loadbalancer.api.client.http.LoadBalancersException;

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

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

public class AccessControlActivity extends CloudListActivity {

        private final int REMOVE_RULE = 199;

        private final int ADD_RULE = 219;

        private LoadBalancer loadBalancer;

        private ArrayList<NetworkItem> networkItems;

        private int lastSelectedRulePosition;

        @Override

        public void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

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

                setContentView(R.layout.accesscontrol);

                restoreState(savedInstanceState);

        }

        @Override

        protected void onSaveInstanceState(Bundle outState) {

                super.onSaveInstanceState(outState);

                outState.putSerializable("networkItems", networkItems);

        }

        @SuppressWarnings("unchecked")

        protected void restoreState(Bundle state) {

                super.restoreState(state);

                setupButton();

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

                        networkItems = (ArrayList<NetworkItem>) state.getSerializable("networkItems");

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

                                displayNoRulesCell();

                        } else {

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

                                setListAdapter(new NetworkItemAdapter());

                        }

                } else {

                        loadNetworkItems();

                }

        }

        private void setupButton(){

                Button addRule = (Button)findViewById(R.id.add_rule_button);

                addRule.setOnClickListener(new OnClickListener() {

                        @Override

                        public void onClick(View v) {

                                Intent viewIntent = new Intent(getContext(), AddAccessRuleActivity.class);

                                viewIntent.putExtra("loadBalancer", loadBalancer);

                                startActivityForResult(viewIntent, ADD_RULE);

                        }

                });

        }

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

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

                        lastSelectedRulePosition = position;

                        showDialog(REMOVE_RULE);

                }

        }

        @Override

        protected Dialog onCreateDialog(int id) {

                switch (id) {

                case REMOVE_RULE: 

                        return new AlertDialog.Builder(AccessControlActivity.this)

                        .setIcon(R.drawable.alert_dialog_icon)

                        .setTitle("Remove Rule")

                        .setMessage("Would you like to remove this rule?")

                        .setPositiveButton("Remove", new DialogInterface.OnClickListener() {

                                public void onClick(DialogInterface dialog, int whichButton) {

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

                                }

                        })

                        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

                                public void onClick(DialogInterface dialog, int whichButton) {

                                        // User clicked Cancel so do some stuff

                                }

                        })

                        .create();          

                }

                return null;

        }

        private void setNetworkItemList(ArrayList<NetworkItem> networkItems) {

                if (networkItems == null) {

                        networkItems = new ArrayList<NetworkItem>();

                }

                this.networkItems = new ArrayList<NetworkItem>();

                String[] networkItemNames = new String[networkItems.size()];

                if (networkItems != null) {

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

                                NetworkItem networkItem = networkItems.get(i);

                                this.networkItems.add(i, networkItem);

                                networkItemNames[i] = networkItem.getName();

                        }

                }

                if (networkItemNames.length == 0) {

                        displayNoRulesCell();

                } else {

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

                        setListAdapter(new NetworkItemAdapter());

                }

        }

         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 displayNoRulesCell() {

                String a[] = new String[1];

                a[0] = "No Rules";

                setListAdapter(new ArrayAdapter<String>(this, R.layout.norulescell, R.id.no_rules_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 loadNetworkItems() {

                displayLoadingCell();

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

        }

        // * Adapter/

        class NetworkItemAdapter extends ArrayAdapter<NetworkItem> {

                NetworkItemAdapter() {

                        super(AccessControlActivity.this, R.layout.accesscontrolcell, networkItems);

                }

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

                        NetworkItem networkItem = networkItems.get(position);

                        LayoutInflater inflater = getLayoutInflater();

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

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

                        label.setText(networkItem.getAddress());

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

                        sublabel.setText(networkItem.getType());

                        ImageView typeImage = (ImageView) row.findViewById(R.id.rule_type_image);

                        int image;

                        if(networkItem.getType().equals("ALLOW")){

                                image = R.drawable.allow_rule;

                        } else {

                                image = R.drawable.deny_rule;

                        }

                        typeImage.setImageResource(image);

                        return(row);

                }

        }

        private class LoadNetworkItemsTask extends AsyncTask<Void, Void, ArrayList<NetworkItem>> {

                private LoadBalancersException exception;

                @Override

                protected void onPreExecute(){

                        //set to null so will reload on config changes

                        networkItems = null;

                }

                @Override

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

                        ArrayList<NetworkItem> networkItems = null;

                        try {

                                networkItems = new NetworkItemManager(getContext()).createList(loadBalancer);

                        } catch (LoadBalancersException e) {

                                exception = e;                                

                        }

                        return networkItems;

                }

                @Override

                protected void onPostExecute(ArrayList<NetworkItem> result) {

                        if (exception != null) {

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

                        }

                        setNetworkItemList(result);

                }

        }

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

                        private CloudServersException exception;

                        private NetworkItem networkItem;

                        @Override

                        //let user know their process has started

                        protected void onPreExecute(){

                                networkItem = networkItems.get(lastSelectedRulePosition);

                                displayLoadingCell();

                                //set to null so will reload on config change

                                networkItems = null;

                        }

                        @Override

                        protected HttpBundle doInBackground(Void... arg0) {

                                HttpBundle bundle = null;

                                try {

                                        bundle = new NetworkItemManager(getContext()).delete(loadBalancer, networkItem);

                                } catch (CloudServersException e) {

                                        exception = e;

                                }

                                return bundle;

                        }

                        @Override

                        protected void onPostExecute(HttpBundle bundle) {

                                HttpResponse response = bundle.getResponse();

                                if (response != null) {

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

                                        if (statusCode == 202 || statusCode == 200) {

                                                setResult(Activity.RESULT_OK);

                                                loadNetworkItems();

                                        } else {

                                                CloudServersException cse = parseCloudServersException(response);

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

                                                        showError("There was a problem deleting your rule.", bundle);

                                                } else {

                                                        showError("There was a problem deleting your rule: " + cse.getMessage(), bundle);

                                                }

                                        }

                                } else if (exception != null) {

                                        showError("There was a problem deleting your rule: " + exception.getMessage(), bundle);                                

                                }                        

                        }

                }

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

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

                        loadNetworkItems();

                }

        }

}