Synnefo » Pithos Android Client

package com.rackspacecloud.android;

import java.io.IOException;

import java.io.StringReader;

import java.util.ArrayList;

import javax.xml.parsers.FactoryConfigurationError;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.parsers.SAXParser;

import javax.xml.parsers.SAXParserFactory;

import org.apache.http.HttpResponse;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.impl.client.BasicResponseHandler;

import org.xml.sax.InputSource;

import org.xml.sax.SAXException;

import org.xml.sax.XMLReader;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.Dialog;

import android.app.ListActivity;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

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.ArrayAdapter;

import android.widget.ListView;

import android.widget.TextView;

import com.rackspace.cloud.files.api.client.Container;

import com.rackspace.cloud.files.api.client.ContainerManager;

import com.rackspace.cloud.files.api.client.ContainerObjectManager;

import com.rackspace.cloud.files.api.client.ContainerObjects;

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

import com.rackspace.cloud.servers.api.client.parsers.CloudServersFaultXMLParser;

/** 

 * 

 * @author Phillip Toohill

 *

 */

public class ContainerObjectsActivity extends ListActivity {

        private static final int deleteContainer = 0;

        private ContainerObjects[] files;

        private static Container container;

        public String LOG = "viewFilesActivity";

        private String cdnEnabledIs;

        @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        container = (Container) this.getIntent().getExtras().get("container");

        if (container.isCdnEnabled()== true){

                cdnEnabledIs = "true";

        }else{

                cdnEnabledIs = "false";

        }

        restoreState(savedInstanceState);

            }

        @Override

        protected void onSaveInstanceState(Bundle outState) {

                super.onSaveInstanceState(outState);

                outState.putSerializable("container", files);

        }

    private void restoreState(Bundle state) {

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

                    files = (ContainerObjects[]) state.getSerializable("container");

                    if (files.length == 0) {

                            displayNoServersCell();

                    } else {

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

                            setListAdapter(new FileAdapter());

                    }

            } else {

                      loadFiles();

          }

    }

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

                if (files != null && files.length > 0) {                    

                    Intent viewIntent = new Intent(this, ContainerObjectDetails.class);

                    viewIntent.putExtra("container", files[position]);

                    viewIntent.putExtra("cdnUrl", container.getCdnUrl());

                    viewIntent.putExtra("containerNames", container.getName());

                    viewIntent.putExtra("isCdnEnabled", cdnEnabledIs);

                    startActivityForResult(viewIntent, 55); // arbitrary number; never used again

            }

    }

    private void loadFiles() {

                       displayLoadingCell();

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

    }

        private void setFileList(ArrayList<ContainerObjects> files) {

            if (files == null) {

                    files = new ArrayList<ContainerObjects>();

            }

            String[] fileNames = new String[files.size()];

            this.files = new ContainerObjects[files.size()];

                if (files != null) { 

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

                                ContainerObjects file= files.get(i);

                                this.files[i] = file;

                                fileNames[i] = file.getName();

                        }

                }

                if (fileNames.length == 0) {

                        displayNoServersCell();

                } else {

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

                        setListAdapter(new FileAdapter());

                }

    }

    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 displayNoServersCell() {

            String a[] = new String[1];

            a[0] = "No Files";

        setListAdapter(new ArrayAdapter<String>(this, R.layout.noobjectscell, R.id.no_files_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 showAlert(String title, String message) {

            //Can't create handler inside thread that has not called Looper.prepare()

            //Looper.prepare();

            try {

                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();

            } catch (Exception e) {

                    e.printStackTrace();

            }

    }

    private class LoadFilesTask extends AsyncTask<Void, Void, ArrayList<ContainerObjects>> {

            private CloudServersException exception;

                @Override

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

                        ArrayList<ContainerObjects> files = null;

                        try {

                                files = (new ContainerObjectManager()).createList(true, container.getName());

                        } catch (CloudServersException e) {

                                exception = e;

                                e.printStackTrace();

                        }

                        return files;

                }

                @Override

                protected void onPostExecute(ArrayList<ContainerObjects> result) {

                        if (exception != null) {

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

                        }                        

                        setFileList(result);

                }

    }

    class FileAdapter extends ArrayAdapter<ContainerObjects> {

                FileAdapter() {

                        super(ContainerObjectsActivity.this, R.layout.listcontainerobjectcell, files);

                }

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

                        ContainerObjects file = files[position];

                        LayoutInflater inflater = getLayoutInflater();

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

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

                        label.setText(file.getCName());

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

                        sublabel.setText(file.getBytes()+ "  Bytes");        

                        return(row);

                }

        }   

    //Create the Menu options

    @Override 

    public boolean onCreateOptionsMenu(Menu menu) {

                super.onCreateOptionsMenu(menu);

                MenuInflater inflater = getMenuInflater();

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

                return true;

        } 

    @Override 

    public boolean onOptionsItemSelected(MenuItem item) {

                switch (item.getItemId()) {

                case R.id.delete_container:

                        showDialog(deleteContainer);

                        return true;

                case R.id.enable_cdn:

                        Intent viewIntent1 = new Intent(this, EnableCDNActivity.class);

                    viewIntent1.putExtra("Cname", container.getName());

                    startActivityForResult(viewIntent1, 55);

                        return true;

                case R.id.refresh:

                        loadFiles();

                return true;

                }

                return false;

        } 

    @Override

    protected Dialog onCreateDialog(int id ) {

            switch (id) {

                        case deleteContainer:

            return new AlertDialog.Builder(ContainerObjectsActivity.this)

                .setIcon(R.drawable.alert_dialog_icon)

                .setTitle("Delete Container")

                .setMessage("Are you sure you want to delete this Container?")

                .setPositiveButton("Delete Container", new DialogInterface.OnClickListener() {

                        public void onClick(DialogInterface dialog, int whichButton) {

                                // User clicked OK so do some stuff

                                new DeleteContainerTask().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;

    }

        @Override

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

          super.onActivityResult(requestCode, resultCode, data);

          if (resultCode == RESULT_OK) {          

                  // a sub-activity kicked back, so we want to refresh the server list

                 loadFiles();

          }

        }

        private CloudServersException parseCloudServersException(HttpResponse response) {

                        CloudServersException cse = new CloudServersException();

                        try {

                            BasicResponseHandler responseHandler = new BasicResponseHandler();

                            String body = responseHandler.handleResponse(response);

                            CloudServersFaultXMLParser parser = new CloudServersFaultXMLParser();

                            SAXParser saxParser = SAXParserFactory.newInstance().newSAXParser();

                            XMLReader xmlReader = saxParser.getXMLReader();

                            xmlReader.setContentHandler(parser);

                            xmlReader.parse(new InputSource(new StringReader(body)));                            

                            cse = parser.getException();                            

                        } catch (ClientProtocolException e) {

                                cse = new CloudServersException();

                                cse.setMessage(e.getLocalizedMessage());

                        } catch (IOException e) {

                                cse = new CloudServersException();

                                cse.setMessage(e.getLocalizedMessage());

                        } catch (ParserConfigurationException e) {

                                cse = new CloudServersException();

                                cse.setMessage(e.getLocalizedMessage());

                        } catch (SAXException e) {

                                cse = new CloudServersException();

                                cse.setMessage(e.getLocalizedMessage());

                        } catch (FactoryConfigurationError e) {

                                cse = new CloudServersException();

                                cse.setMessage(e.getLocalizedMessage());

                        }

                        return cse;

            }

private class DeleteContainerTask extends AsyncTask<Void, Void, HttpResponse> {

                private CloudServersException exception;

                @Override

                protected HttpResponse doInBackground(Void... arg0) {

                        HttpResponse resp = null;

                        try {

                                resp = (new ContainerManager()).delete(container.getName());

                                Log.v(LOG, "container's name " + container.getName());

                        } catch (CloudServersException e) {

                                exception = e;

                        }

                        return resp;

                }

                @Override

                protected void onPostExecute(HttpResponse response) {                        

                        if (response != null) {

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

                                if (statusCode == 409) {

                                        showAlert("Error", "Container must be empty in order to delete");

                                }

                                if (statusCode == 204) {

                                        setResult(Activity.RESULT_OK);

                                        finish();

                                } else {

                                        CloudServersException cse = parseCloudServersException(response);

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

                                                showAlert("Error", "There was a problem deleting your container.");

                                        } else {

                                                showAlert("Error", "There was a problem deleting your container: " + cse.getMessage());

                                        }

                                }

                        } else if (exception != null) {

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

                        }                        

                }

    }

}