package eu.siacs.conversations.ui; import android.app.Activity; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.databinding.DataBindingUtil; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; import android.text.Editable; import android.text.TextUtils; import android.text.TextWatcher; import android.view.View; import android.widget.AdapterView; import android.widget.Button; import java.security.SecureRandom; import java.util.ArrayList; import java.util.Collection; import java.util.List; import eu.siacs.conversations.R; import eu.siacs.conversations.databinding.CreatePublicChannelDialogBinding; import eu.siacs.conversations.entities.Account; import eu.siacs.conversations.services.XmppConnectionService; import eu.siacs.conversations.ui.adapter.KnownHostsAdapter; import eu.siacs.conversations.ui.interfaces.OnBackendConnected; import eu.siacs.conversations.ui.util.DelayedHintHelper; import eu.siacs.conversations.utils.CryptoHelper; import eu.siacs.conversations.xmpp.XmppConnection; import eu.siacs.conversations.xmpp.Jid; public class CreatePublicChannelDialog extends DialogFragment implements OnBackendConnected { private static final char[] FORBIDDEN = new char[]{'\u0022','&','\'','/',':','<','>','@'}; private static final String ACCOUNTS_LIST_KEY = "activated_accounts_list"; private CreatePublicChannelDialogListener mListener; private KnownHostsAdapter knownHostsAdapter; private boolean jidWasModified = false; private boolean nameEntered = false; private boolean skipTetxWatcher = false; private static final SecureRandom RANDOM = new SecureRandom(); public static CreatePublicChannelDialog newInstance(List accounts) { CreatePublicChannelDialog dialog = new CreatePublicChannelDialog(); Bundle bundle = new Bundle(); bundle.putStringArrayList(ACCOUNTS_LIST_KEY, (ArrayList) accounts); dialog.setArguments(bundle); return dialog; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setRetainInstance(true); } @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { jidWasModified = savedInstanceState != null && savedInstanceState.getBoolean("jid_was_modified_false", false); nameEntered = savedInstanceState != null && savedInstanceState.getBoolean("name_entered", false); final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle(R.string.create_public_channel); final CreatePublicChannelDialogBinding binding = DataBindingUtil.inflate(getActivity().getLayoutInflater(), R.layout.create_public_channel_dialog, null, false); binding.account.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView parent, View view, int position, long id) { updateJidSuggestion(binding); } @Override public void onNothingSelected(AdapterView parent) { } }); binding.jid.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { if (skipTetxWatcher) { return; } if (jidWasModified) { jidWasModified = !TextUtils.isEmpty(s); } else { jidWasModified = !s.toString().equals(getJidSuggestion(binding)); } } }); updateInputs(binding,false); ArrayList mActivatedAccounts = getArguments().getStringArrayList(ACCOUNTS_LIST_KEY); StartConversationActivity.populateAccountSpinner(getActivity(), mActivatedAccounts, binding.account); builder.setView(binding.getRoot()); builder.setPositiveButton(nameEntered ? R.string.create : R.string.next, null); builder.setNegativeButton(nameEntered ? R.string.back : R.string.cancel, null); DelayedHintHelper.setHint(R.string.channel_bare_jid_example, binding.jid); this.knownHostsAdapter = new KnownHostsAdapter(getActivity(), R.layout.simple_list_item); binding.jid.setAdapter(knownHostsAdapter); final AlertDialog dialog = builder.create(); binding.groupChatName.setOnEditorActionListener((v, actionId, event) -> { submit(dialog, binding); return true; }); dialog.setOnShowListener(dialogInterface -> { dialog.getButton(DialogInterface.BUTTON_NEGATIVE).setOnClickListener(v -> goBack(dialog, binding)); dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(v -> submit(dialog, binding)); }); return dialog; } private void updateJidSuggestion(CreatePublicChannelDialogBinding binding) { if (jidWasModified) { return; } String jid = getJidSuggestion(binding); skipTetxWatcher = true; binding.jid.setText(jid); skipTetxWatcher = false; } @Override public void onSaveInstanceState(Bundle outState) { outState.putBoolean("jid_was_modified",jidWasModified); outState.putBoolean("name_entered", nameEntered); super.onSaveInstanceState(outState); } private static String getJidSuggestion(CreatePublicChannelDialogBinding binding) { final Account account = StartConversationActivity.getSelectedAccount(binding.getRoot().getContext(), binding.account); final XmppConnection connection = account == null ? null : account.getXmppConnection(); if (connection == null) { return ""; } final Editable nameText = binding.groupChatName.getText(); final String name = nameText == null ? "" : nameText.toString().trim(); final String domain = connection.getMucServer(); if (domain == null) { return ""; } final String localpart = clean(name); if (TextUtils.isEmpty(localpart)) { return ""; } else { try { return Jid.of(localpart, domain, null).toEscapedString(); } catch (IllegalArgumentException e) { return Jid.of(CryptoHelper.pronounceable(RANDOM), domain, null).toEscapedString(); } } } private static String clean(String name) { for(char c : FORBIDDEN) { name = name.replace(String.valueOf(c),""); } return name.replaceAll("\\s+","-"); } private void goBack(AlertDialog dialog, CreatePublicChannelDialogBinding binding) { if (nameEntered) { nameEntered = false; updateInputs(binding, true); updateButtons(dialog); } else { dialog.dismiss(); } } private void submit(AlertDialog dialog, CreatePublicChannelDialogBinding binding) { final Context context = binding.getRoot().getContext(); final Editable nameText = binding.groupChatName.getText(); final String name = nameText == null ? "" : nameText.toString().trim(); final Editable addressText = binding.jid.getText(); final String address = addressText == null ? "" : addressText.toString().trim(); if (nameEntered) { binding.nameLayout.setError(null); if (address.isEmpty()) { binding.xmppAddressLayout.setError(context.getText(R.string.please_enter_xmpp_address)); } else { final Jid jid; try { jid = Jid.ofEscaped(address); } catch (IllegalArgumentException e) { binding.xmppAddressLayout.setError(context.getText(R.string.invalid_jid)); return; } final Account account = StartConversationActivity.getSelectedAccount(context, binding.account); if (account == null) { return; } final XmppConnectionService service = ((XmppActivity )context).xmppConnectionService; if (service != null && service.findFirstMuc(jid) != null) { binding.xmppAddressLayout.setError(context.getString(R.string.channel_already_exists)); return; } mListener.onCreatePublicChannel(account, name, jid); dialog.dismiss(); } } else { binding.xmppAddressLayout.setError(null); if (name.isEmpty()) { binding.nameLayout.setError(context.getText(R.string.please_enter_name)); } else if (StartConversationActivity.isValidJid(name)){ binding.nameLayout.setError(context.getText(R.string.this_is_an_xmpp_address)); } else { binding.nameLayout.setError(null); nameEntered = true; updateInputs(binding, true); updateButtons(dialog); binding.jid.setText(""); binding.jid.append(getJidSuggestion(binding)); } } } private void updateInputs(CreatePublicChannelDialogBinding binding, boolean requestFocus) { binding.xmppAddressLayout.setVisibility(nameEntered ? View.VISIBLE : View.GONE); binding.nameLayout.setVisibility(nameEntered ? View.GONE : View.VISIBLE); if (!requestFocus) { return; } if (nameEntered) { binding.xmppAddressLayout.requestFocus(); } else { binding.nameLayout.requestFocus(); } } private void updateButtons(AlertDialog dialog) { final Button positive = dialog.getButton(DialogInterface.BUTTON_POSITIVE); final Button negative = dialog.getButton(DialogInterface.BUTTON_NEGATIVE); positive.setText(nameEntered ? R.string.create : R.string.next); negative.setText(nameEntered ? R.string.back : R.string.cancel); } @Override public void onBackendConnected() { refreshKnownHosts(); } private void refreshKnownHosts() { Activity activity = getActivity(); if (activity instanceof XmppActivity) { Collection hosts = ((XmppActivity) activity).xmppConnectionService.getKnownConferenceHosts(); this.knownHostsAdapter.refresh(hosts); } } public interface CreatePublicChannelDialogListener { void onCreatePublicChannel(Account account, String name, Jid address); } @Override public void onAttach(Context context) { super.onAttach(context); try { mListener = (CreatePublicChannelDialogListener) context; } catch (ClassCastException e) { throw new ClassCastException(context.toString() + " must implement CreateConferenceDialogListener"); } } @Override public void onStart() { super.onStart(); final Activity activity = getActivity(); if (activity instanceof XmppActivity && ((XmppActivity) activity).xmppConnectionService != null) { refreshKnownHosts(); } } @Override public void onDestroyView() { Dialog dialog = getDialog(); if (dialog != null && getRetainInstance()) { dialog.setDismissMessage(null); } super.onDestroyView(); } }