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