diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/CreateKeyDialogFragment.java')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/CreateKeyDialogFragment.java | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/CreateKeyDialogFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/CreateKeyDialogFragment.java new file mode 100644 index 000000000..ad558a81e --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/CreateKeyDialogFragment.java @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +package org.sufficientlysecure.keychain.ui.dialog; + +import android.app.AlertDialog; +import android.app.Dialog; +import android.content.DialogInterface; +import android.os.Bundle; +import android.support.v4.app.DialogFragment; +import android.support.v4.app.FragmentActivity; +import android.view.LayoutInflater; +import android.view.View; +import android.widget.AdapterView; +import android.widget.ArrayAdapter; +import android.widget.Spinner; +import org.sufficientlysecure.keychain.Id; +import org.sufficientlysecure.keychain.R; +import org.sufficientlysecure.keychain.util.Choice; + +import java.util.ArrayList; + +public class CreateKeyDialogFragment extends DialogFragment { + + public interface OnAlgorithmSelectedListener { + public void onAlgorithmSelected(Choice algorithmChoice, int keySize); + } + + private static final String ARG_EDITOR_CHILD_COUNT = "child_count"; + + private int mNewKeySize; + private Choice mNewKeyAlgorithmChoice; + private OnAlgorithmSelectedListener mAlgorithmSelectedListener; + + public void setOnAlgorithmSelectedListener(OnAlgorithmSelectedListener listener) { + mAlgorithmSelectedListener = listener; + } + + public static CreateKeyDialogFragment newInstance(int mEditorChildCount) { + CreateKeyDialogFragment frag = new CreateKeyDialogFragment(); + Bundle args = new Bundle(); + + args.putInt(ARG_EDITOR_CHILD_COUNT, mEditorChildCount); + + frag.setArguments(args); + + return frag; + } + + @Override + public Dialog onCreateDialog(Bundle savedInstanceState) { + final FragmentActivity context = getActivity(); + final LayoutInflater mInflater; + + final int childCount = getArguments().getInt(ARG_EDITOR_CHILD_COUNT); + mInflater = context.getLayoutInflater(); + + AlertDialog.Builder dialog = new AlertDialog.Builder(context); + + View view = mInflater.inflate(R.layout.create_key_dialog, null); + dialog.setView(view); + dialog.setTitle(R.string.title_create_key); + + boolean wouldBeMasterKey = (childCount == 0); + + final Spinner algorithm = (Spinner) view.findViewById(R.id.create_key_algorithm); + ArrayList<Choice> choices = new ArrayList<Choice>(); + choices.add(new Choice(Id.choice.algorithm.dsa, getResources().getString( + R.string.dsa))); + if (!wouldBeMasterKey) { + choices.add(new Choice(Id.choice.algorithm.elgamal, getResources().getString( + R.string.elgamal))); + } + + choices.add(new Choice(Id.choice.algorithm.rsa, getResources().getString( + R.string.rsa))); + + ArrayAdapter<Choice> adapter = new ArrayAdapter<Choice>(context, + android.R.layout.simple_spinner_item, choices); + adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); + algorithm.setAdapter(adapter); + // make RSA the default + for (int i = 0; i < choices.size(); ++i) { + if (choices.get(i).getId() == Id.choice.algorithm.rsa) { + algorithm.setSelection(i); + break; + } + } + + final Spinner keySize = (Spinner) view.findViewById(R.id.create_key_size); + ArrayAdapter<CharSequence> keySizeAdapter = ArrayAdapter.createFromResource( + context, R.array.key_size_spinner_values, + android.R.layout.simple_spinner_item); + keySizeAdapter + .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); + keySize.setAdapter(keySizeAdapter); + keySize.setSelection(3); // Default to 4096 for the key length + dialog.setPositiveButton(android.R.string.ok, + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface di, int id) { + di.dismiss(); + try { + final String selectedItem = (String) keySize.getSelectedItem(); + mNewKeySize = Integer.parseInt(selectedItem); + } catch (NumberFormatException e) { + mNewKeySize = 0; + } + + mNewKeyAlgorithmChoice = (Choice) algorithm.getSelectedItem(); + mAlgorithmSelectedListener.onAlgorithmSelected(mNewKeyAlgorithmChoice, mNewKeySize); + } + }); + + dialog.setCancelable(true); + dialog.setNegativeButton(android.R.string.cancel, + new DialogInterface.OnClickListener() { + public void onClick(DialogInterface di, int id) { + di.dismiss(); + } + }); + + final AlertDialog alertDialog = dialog.create(); + + final AdapterView.OnItemSelectedListener weakRsaListener = new AdapterView.OnItemSelectedListener() { + @Override + public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { + final Choice selectedAlgorithm = (Choice) algorithm.getSelectedItem(); + final int selectedKeySize = Integer.parseInt((String) keySize.getSelectedItem()); + final boolean isWeakRsa = (selectedAlgorithm.getId() == Id.choice.algorithm.rsa && + selectedKeySize <= 1024); + alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(!isWeakRsa); + } + + @Override + public void onNothingSelected(AdapterView<?> parent) { + } + }; + + keySize.setOnItemSelectedListener(weakRsaListener); + algorithm.setOnItemSelectedListener(weakRsaListener); + + return alertDialog; + } + +} |