1package eu.siacs.conversations.ui;
2
3import android.app.Activity;
4import android.app.Dialog;
5import android.content.Context;
6import android.content.DialogInterface;
7import android.os.Bundle;
8import android.text.Editable;
9import android.text.TextUtils;
10import android.text.TextWatcher;
11import android.view.View;
12import android.widget.AdapterView;
13import android.widget.Button;
14import androidx.annotation.NonNull;
15import androidx.appcompat.app.AlertDialog;
16import androidx.databinding.DataBindingUtil;
17import androidx.fragment.app.DialogFragment;
18import com.google.android.material.dialog.MaterialAlertDialogBuilder;
19import eu.siacs.conversations.R;
20import eu.siacs.conversations.databinding.DialogCreatePublicChannelBinding;
21import eu.siacs.conversations.entities.Account;
22import eu.siacs.conversations.services.XmppConnectionService;
23import eu.siacs.conversations.ui.adapter.KnownHostsAdapter;
24import eu.siacs.conversations.ui.interfaces.OnBackendConnected;
25import eu.siacs.conversations.ui.util.DelayedHintHelper;
26import eu.siacs.conversations.utils.CryptoHelper;
27import eu.siacs.conversations.xmpp.Jid;
28import eu.siacs.conversations.xmpp.XmppConnection;
29import java.util.ArrayList;
30import java.util.Collection;
31import java.util.List;
32
33public class CreatePublicChannelDialog extends DialogFragment implements OnBackendConnected {
34
35 private static final char[] FORBIDDEN =
36 new char[] {'\u0022', '&', '\'', '/', ':', '<', '>', '@'};
37
38 private static final String ACCOUNTS_LIST_KEY = "activated_accounts_list";
39 private CreatePublicChannelDialogListener mListener;
40 private KnownHostsAdapter knownHostsAdapter;
41 private boolean jidWasModified = false;
42 private boolean nameEntered = false;
43 private boolean skipTetxWatcher = false;
44
45 public static CreatePublicChannelDialog newInstance(final List<String> accounts) {
46 CreatePublicChannelDialog dialog = new CreatePublicChannelDialog();
47 Bundle bundle = new Bundle();
48 bundle.putStringArrayList(ACCOUNTS_LIST_KEY, (ArrayList<String>) accounts);
49 dialog.setArguments(bundle);
50 return dialog;
51 }
52
53 @Override
54 public void onActivityCreated(Bundle savedInstanceState) {
55 super.onActivityCreated(savedInstanceState);
56 setRetainInstance(true);
57 }
58
59 @NonNull
60 @Override
61 public Dialog onCreateDialog(Bundle savedInstanceState) {
62 jidWasModified =
63 savedInstanceState != null
64 && savedInstanceState.getBoolean("jid_was_modified_false", false);
65 nameEntered =
66 savedInstanceState != null && savedInstanceState.getBoolean("name_entered", false);
67 final MaterialAlertDialogBuilder builder =
68 new MaterialAlertDialogBuilder(requireActivity());
69 builder.setTitle(R.string.create_public_channel);
70 final DialogCreatePublicChannelBinding binding =
71 DataBindingUtil.inflate(
72 getActivity().getLayoutInflater(),
73 R.layout.dialog_create_public_channel,
74 null,
75 false);
76 binding.account.setOnItemSelectedListener(
77 new AdapterView.OnItemSelectedListener() {
78 @Override
79 public void onItemSelected(
80 AdapterView<?> parent, View view, int position, long id) {
81 updateJidSuggestion(binding);
82 }
83
84 @Override
85 public void onNothingSelected(AdapterView<?> parent) {}
86 });
87 binding.jid.addTextChangedListener(
88 new TextWatcher() {
89 @Override
90 public void beforeTextChanged(
91 CharSequence s, int start, int count, int after) {}
92
93 @Override
94 public void onTextChanged(CharSequence s, int start, int before, int count) {}
95
96 @Override
97 public void afterTextChanged(Editable s) {
98 if (skipTetxWatcher) {
99 return;
100 }
101 if (jidWasModified) {
102 jidWasModified = !TextUtils.isEmpty(s);
103 } else {
104 jidWasModified = !s.toString().equals(getJidSuggestion(binding));
105 }
106 }
107 });
108 updateInputs(binding, false);
109 ArrayList<String> mActivatedAccounts = getArguments().getStringArrayList(ACCOUNTS_LIST_KEY);
110 StartConversationActivity.populateAccountSpinner(
111 getActivity(), mActivatedAccounts, binding.account);
112 builder.setView(binding.getRoot());
113 builder.setPositiveButton(nameEntered ? R.string.create : R.string.next, null);
114 builder.setNegativeButton(nameEntered ? R.string.back : R.string.cancel, null);
115 DelayedHintHelper.setHint(R.string.channel_bare_jid_example, binding.jid);
116 this.knownHostsAdapter = new KnownHostsAdapter(getActivity(), R.layout.item_autocomplete);
117 binding.jid.setAdapter(knownHostsAdapter);
118 final AlertDialog dialog = builder.create();
119 binding.groupChatName.setOnEditorActionListener(
120 (v, actionId, event) -> {
121 submit(dialog, binding);
122 return true;
123 });
124 dialog.setOnShowListener(
125 dialogInterface -> {
126 dialog.getButton(DialogInterface.BUTTON_NEGATIVE)
127 .setOnClickListener(v -> goBack(dialog, binding));
128 dialog.getButton(DialogInterface.BUTTON_POSITIVE)
129 .setOnClickListener(v -> submit(dialog, binding));
130 });
131 return dialog;
132 }
133
134 private void updateJidSuggestion(final DialogCreatePublicChannelBinding binding) {
135 if (jidWasModified) {
136 return;
137 }
138 String jid = getJidSuggestion(binding);
139 skipTetxWatcher = true;
140 binding.jid.setText(jid);
141 skipTetxWatcher = false;
142 }
143
144 @Override
145 public void onSaveInstanceState(Bundle outState) {
146 outState.putBoolean("jid_was_modified", jidWasModified);
147 outState.putBoolean("name_entered", nameEntered);
148 super.onSaveInstanceState(outState);
149 }
150
151 private static String getJidSuggestion(final DialogCreatePublicChannelBinding binding) {
152 final Account account =
153 StartConversationActivity.getSelectedAccount(
154 binding.getRoot().getContext(), binding.account);
155 final XmppConnection connection = account == null ? null : account.getXmppConnection();
156 if (connection == null) {
157 return "";
158 }
159 final Editable nameText = binding.groupChatName.getText();
160 final String name = nameText == null ? "" : nameText.toString().trim();
161 final String domain = connection.getMucServer();
162 if (domain == null) {
163 return "";
164 }
165 final String localpart = clean(name);
166 if (TextUtils.isEmpty(localpart)) {
167 return "";
168 } else {
169 try {
170 return Jid.of(localpart, domain, null).toString();
171 } catch (IllegalArgumentException e) {
172 return Jid.of(CryptoHelper.pronounceable(), domain, null).toString();
173 }
174 }
175 }
176
177 private static String clean(String name) {
178 for (char c : FORBIDDEN) {
179 name = name.replace(String.valueOf(c), "");
180 }
181 return name.replaceAll("\\s+", "-");
182 }
183
184 private void goBack(AlertDialog dialog, DialogCreatePublicChannelBinding binding) {
185 if (nameEntered) {
186 nameEntered = false;
187 updateInputs(binding, true);
188 updateButtons(dialog);
189 } else {
190 dialog.dismiss();
191 }
192 }
193
194 private void submit(AlertDialog dialog, DialogCreatePublicChannelBinding binding) {
195 final Context context = binding.getRoot().getContext();
196 final Editable nameText = binding.groupChatName.getText();
197 final String name = nameText == null ? "" : nameText.toString().trim();
198 final Editable addressText = binding.jid.getText();
199 final String address = addressText == null ? "" : addressText.toString().trim();
200 if (nameEntered) {
201 binding.nameLayout.setError(null);
202 if (address.isEmpty()) {
203 binding.xmppAddressLayout.setError(
204 context.getText(R.string.please_enter_xmpp_address));
205 } else {
206 final Jid jid;
207 try {
208 jid = Jid.ofUserInput(address);
209 } catch (final IllegalArgumentException e) {
210 binding.xmppAddressLayout.setError(context.getText(R.string.invalid_jid));
211 return;
212 }
213 final Account account =
214 StartConversationActivity.getSelectedAccount(context, binding.account);
215 if (account == null) {
216 return;
217 }
218 final XmppConnectionService service =
219 ((XmppActivity) context).xmppConnectionService;
220 if (service != null && service.findFirstMuc(jid) != null) {
221 binding.xmppAddressLayout.setError(
222 context.getString(R.string.channel_already_exists));
223 return;
224 }
225 mListener.onCreatePublicChannel(account, name, jid);
226 dialog.dismiss();
227 }
228 } else {
229 binding.xmppAddressLayout.setError(null);
230 if (name.isEmpty()) {
231 binding.nameLayout.setError(context.getText(R.string.please_enter_name));
232 } else if (StartConversationActivity.isValidJid(name)) {
233 binding.nameLayout.setError(context.getText(R.string.this_is_an_xmpp_address));
234 } else {
235 binding.nameLayout.setError(null);
236 nameEntered = true;
237 updateInputs(binding, true);
238 updateButtons(dialog);
239 binding.jid.setText("");
240 binding.jid.append(getJidSuggestion(binding));
241 }
242 }
243 }
244
245 private void updateInputs(
246 final DialogCreatePublicChannelBinding binding, final boolean requestFocus) {
247 binding.xmppAddressLayout.setVisibility(nameEntered ? View.VISIBLE : View.GONE);
248 binding.nameLayout.setVisibility(nameEntered ? View.GONE : View.VISIBLE);
249 if (!requestFocus) {
250 return;
251 }
252 if (nameEntered) {
253 binding.xmppAddressLayout.requestFocus();
254 } else {
255 binding.nameLayout.requestFocus();
256 }
257 }
258
259 private void updateButtons(AlertDialog dialog) {
260 final Button positive = dialog.getButton(DialogInterface.BUTTON_POSITIVE);
261 final Button negative = dialog.getButton(DialogInterface.BUTTON_NEGATIVE);
262 positive.setText(nameEntered ? R.string.create : R.string.next);
263 negative.setText(nameEntered ? R.string.back : R.string.cancel);
264 }
265
266 @Override
267 public void onBackendConnected() {
268 refreshKnownHosts();
269 }
270
271 private void refreshKnownHosts() {
272 Activity activity = getActivity();
273 if (activity instanceof XmppActivity) {
274 Collection<String> hosts =
275 ((XmppActivity) activity).xmppConnectionService.getKnownConferenceHosts();
276 this.knownHostsAdapter.refresh(hosts);
277 }
278 }
279
280 public interface CreatePublicChannelDialogListener {
281 void onCreatePublicChannel(Account account, String name, Jid address);
282 }
283
284 @Override
285 public void onAttach(@NonNull Context context) {
286 super.onAttach(context);
287 try {
288 mListener = (CreatePublicChannelDialogListener) context;
289 } catch (ClassCastException e) {
290 throw new ClassCastException(
291 context.toString() + " must implement CreateConferenceDialogListener");
292 }
293 }
294
295 @Override
296 public void onStart() {
297 super.onStart();
298 final Activity activity = getActivity();
299 if (activity instanceof XmppActivity
300 && ((XmppActivity) activity).xmppConnectionService != null) {
301 refreshKnownHosts();
302 }
303 }
304
305 @Override
306 public void onDestroyView() {
307 Dialog dialog = getDialog();
308 if (dialog != null && getRetainInstance()) {
309 dialog.setDismissMessage(null);
310 }
311 super.onDestroyView();
312 }
313}