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Initial commit

This commit is contained in:
Carlos Galindo 2017-05-16 21:46:12 +02:00
commit 8d1597618a
Signed by: kauron
GPG key ID: 83E68706DEE119A3
50 changed files with 1519 additions and 0 deletions

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package com.kauron.newssarcher;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private EditText editText;
private CheckBox stemmingCheck, stopwordsCheck;
private QueryAdapter mAdapter;
private ArrayList<Query> queries;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
queries = new ArrayList<>();
ListView listView = (ListView) findViewById(R.id.listView);
editText = (EditText) findViewById(R.id.editText);
stemmingCheck = (CheckBox) findViewById(R.id.stemmingCheck);
stopwordsCheck = (CheckBox) findViewById(R.id.stopwordsCheck);
editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {
if (i == EditorInfo.IME_ACTION_SEARCH) {
onButtonClick(null);
return true;
}
return false;
}
});
mAdapter = new QueryAdapter(this, queries);
listView.setAdapter(mAdapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
if (queries.get(i).hasAnswer()) {
Toast.makeText(adapterView.getContext(), R.string.no_answer_yet,
Toast.LENGTH_LONG).show();
return;
}
LayoutInflater inflater= LayoutInflater.from(adapterView.getContext());
View mView=inflater.inflate(R.layout.my_dialog, null);
TextView answerView = (TextView) mView.findViewById(R.id.answer_text);
TextView shortAnswerView = (TextView) mView.findViewById(R.id.shortanswer_text);
TextView optionsView = (TextView) mView.findViewById(R.id.options_text);
answerView.setText(queries.get(i).getAnswer());
shortAnswerView.setText(queries.get(i).getShortAnswer());
optionsView.setText(queries.get(i).getOptions());
final int[] position = new int[] {i};
AlertDialog.Builder alertDialog = new AlertDialog.Builder(adapterView.getContext());
alertDialog.setTitle(queries.get(i).getQuery());
alertDialog.setView(mView);
alertDialog.setPositiveButton(R.string.close, null);
alertDialog.setNeutralButton(R.string.copy_query, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
editText.setText("");
editText.append(queries.get(position[0]).getQuery());
dialogInterface.dismiss();
}
});
AlertDialog alert = alertDialog.create();
alert.show();
}
});
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
editText.getText().clear();
editText.append(queries.get(i).getQuery());
return false;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.menu_settings:
Intent intent = new Intent(this, SettingsActivity.class);
startActivity(intent);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
public void onButtonClick(View view) {
// connect to the server
String s = editText.getText().toString();
if (s.isEmpty())
return;
SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
String endpoint = sharedPref.getString("pref_endpoint", "kauron.ddns.net");
int port = Integer.valueOf(sharedPref.getString("pref_port", "2048"));
Query q = new Query(s, endpoint, port, stopwordsCheck.isChecked(), stemmingCheck.isChecked(), this);
new QueryTask().execute(q);
queries.add(0, q);
mAdapter.notifyDataSetChanged();
editText.setText("");
editText.requestFocus();
}
public void onSymbolClick(View view) {
editText.append(((Button)view).getText().toString());
}
public void onBoolClick(View view) {
String s = ((Button)view).getText().toString() + ' ';
String text = editText.getText().toString();
if (!text.isEmpty() && text.charAt(text.length() - 1) != ' ')
s = ' ' + s;
editText.append(s);
}
public void onFieldClick(View view) {
String s = ((Button)view).getText().toString();
String text = editText.getText().toString();
if (!text.isEmpty() && text.charAt(text.length() - 1) != ' ')
s = ' ' + s;
editText.append(s);
}
private class QueryTask extends AsyncTask<Query, Void, Void> {
@Override
protected Void doInBackground(Query... queries) {
Query q = queries[0];
String message = q.getQuery() + q.getShortOptions();
TCPClient mTcpClient = new TCPClient(message, q.getEndpoint(), new TCPClient.OnMessageReceived() {
@Override
//here the messageReceived method is implemented
public void messageReceived(String response) {
MainActivity.this.queries.get(0).setAnswer(response);
}
});
mTcpClient.run();
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
mAdapter.notifyDataSetChanged();
}
}
}

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package com.kauron.newssarcher;
import android.content.Context;
class Query {
private final String query;
private String answer;
private final boolean noStopwords;
private final boolean stemming;
private final Context context;
private final String host;
private final int port;
Query(String query, String host, int port, boolean noStopwords, boolean stemming, Context context) {
this.query = query;
this.noStopwords = noStopwords;
this.stemming = stemming;
this.context = context;
this.host = host;
this.port = port;
}
String getEndpoint() {
return host + ":" + port;
}
String getQuery() {
return query;
}
String getAnswer() {
return answer;
}
String getOptions() {
return String.format("Stemming (%s), Remove stopwords (%s)", stemming ? "yes" : "no",
noStopwords ? "yes" : "no");
}
String getShortOptions() {
return (stemming ? " -s" : "") + (noStopwords ? " -n" : "");
}
String getShortAnswer() {
if (answer == null)
return context.getString(R.string.no_answer_yet);
else
return answer.substring(answer.lastIndexOf('\n') + 1);
}
void setAnswer(String answer) {
this.answer = answer;
}
boolean hasAnswer() {
return answer == null;
}
}

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package com.kauron.newssarcher;
import android.content.Context;
import android.support.annotation.NonNull;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.ArrayList;
class QueryAdapter extends ArrayAdapter<Query> {
QueryAdapter(@NonNull Context context, @NonNull ArrayList<Query> objects) {
super(context, R.layout.query_list_item, objects);
}
@NonNull
@Override
public View getView(int position, View convertView, @NonNull ViewGroup parent) {
// Get the data item for this position
Query q = getItem(position);
LayoutInflater inflater = LayoutInflater.from(getContext());
if (convertView == null)
convertView = inflater.inflate(R.layout.query_list_item, parent, false);
TextView query = (TextView) convertView.findViewById(R.id.query_text);
TextView options = (TextView) convertView.findViewById(R.id.options_text);
TextView result = (TextView) convertView.findViewById(R.id.result_text);
if (q != null) {
query.setText(q.getQuery());
options.setText(q.getOptions());
result.setText(q.getShortAnswer());
}
// Return the completed view to render on screen
return convertView;
}
}

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package com.kauron.newssarcher;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;
public class SettingsActivity extends PreferenceActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Display the fragment as the main content.
getFragmentManager().beginTransaction()
.replace(android.R.id.content, new SettingsFragment())
.commit();
}
public static class SettingsFragment extends PreferenceFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Load the preferences from an XML resource
addPreferencesFromResource(R.xml.pref_general);
}
}
}

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package com.kauron.newssarcher;
import android.util.Log;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
class TCPClient {
private String SERVER_DOMAIN = "kauron.ddns.net"; //your computer IP address
private int SERVER_PORT = 2048;
private OnMessageReceived mMessageListener = null;
private final String message;
/**
* Constructor of the class. OnMessagedReceived listens for the messages received from server
*/
TCPClient(String message, String endpoint, OnMessageReceived listener) {
mMessageListener = listener;
this.message = message;
if (endpoint.contains(":")) {
String[] strings = endpoint.split(":");
SERVER_DOMAIN = strings[0];
SERVER_PORT = Integer.valueOf(strings[1]);
}
}
void run() {
try {
Socket socket = new Socket(SERVER_DOMAIN, SERVER_PORT);
try {
//send the message to the server
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
if (!out.checkError()) {
out.print(this.message);
out.flush();
}
//receive the message which the server sends back
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String text = "", line;
while ((line = in.readLine()) != null) {
text += line + '\n';
}
text = text.substring(0, text.length() - 1);
if (mMessageListener != null) {
mMessageListener.messageReceived(text);
}
} catch (Exception e) {
Log.e("TCP", "S: Error", e);
} finally {
//the socket must be closed. It is not possible to reconnect to this socket
// after it is closed, which means a new socket instance has to be created.
socket.close();
}
} catch (Exception e) {
Log.e("TCP", "C: Error", e);
}
}
//Declare the interface. The method messageReceived(String message) will must be implemented in the MyActivity
//class at on asynckTask doInBackground
interface OnMessageReceived {
void messageReceived(String message);
}
}