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/*
* Copyright (C) 2014 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;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.ui.CreateKeyActivity.FragAction;
import org.sufficientlysecure.keychain.ui.widget.PassphraseEditText;
import org.sufficientlysecure.keychain.util.Passphrase;
public class CreateKeyPassphraseFragment extends Fragment {
// view
CreateKeyActivity mCreateKeyActivity;
PassphraseEditText mPassphraseEdit;
EditText mPassphraseEditAgain;
CheckBox mShowPassphrase;
View mBackButton;
View mNextButton;
/**
* Creates new instance of this fragment
*/
public static CreateKeyPassphraseFragment newInstance() {
CreateKeyPassphraseFragment frag = new CreateKeyPassphraseFragment();
Bundle args = new Bundle();
frag.setArguments(args);
return frag;
}
/**
* Checks if text of given EditText is not empty. If it is empty an error is
* set and the EditText gets the focus.
*
* @param context
* @param editText
* @return true if EditText is not empty
*/
private static boolean isEditTextNotEmpty(Context context, EditText editText) {
boolean output = true;
if (editText.getText().length() == 0) {
editText.setError(context.getString(R.string.create_key_empty));
editText.requestFocus();
output = false;
} else {
editText.setError(null);
}
return output;
}
private static boolean areEditTextsEqual(EditText editText1, EditText editText2) {
Passphrase p1 = new Passphrase(editText1);
Passphrase p2 = new Passphrase(editText2);
return (p1.equals(p2));
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.create_key_passphrase_fragment, container, false);
mPassphraseEdit = (PassphraseEditText) view.findViewById(R.id.create_key_passphrase);
mPassphraseEditAgain = (EditText) view.findViewById(R.id.create_key_passphrase_again);
mShowPassphrase = (CheckBox) view.findViewById(R.id.create_key_show_passphrase);
mBackButton = view.findViewById(R.id.create_key_back_button);
mNextButton = view.findViewById(R.id.create_key_next_button);
// initial values
// TODO: using String here is unsafe...
if (mCreateKeyActivity.mPassphrase != null) {
mPassphraseEdit.setText(mCreateKeyActivity.mPassphrase.toStringUnsafe());
mPassphraseEditAgain.setText(mCreateKeyActivity.mPassphrase.toStringUnsafe());
}
mPassphraseEdit.requestFocus();
mBackButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
back();
}
});
mNextButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
nextClicked();
}
});
mShowPassphrase.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
mPassphraseEdit.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
mPassphraseEditAgain.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
} else {
mPassphraseEdit.setTransformationMethod(PasswordTransformationMethod.getInstance());
mPassphraseEditAgain.setTransformationMethod(PasswordTransformationMethod.getInstance());
}
}
});
TextWatcher textWatcher = 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) {
if (!isEditTextNotEmpty(getActivity(), mPassphraseEdit)) {
mPassphraseEditAgain.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
return;
}
if (areEditTextsEqual(mPassphraseEdit, mPassphraseEditAgain)) {
mPassphraseEditAgain.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_stat_retyped_ok, 0);
} else {
mPassphraseEditAgain.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_stat_retyped_bad, 0);
}
}
@Override
public void afterTextChanged(Editable s) {
}
};
mPassphraseEdit.addTextChangedListener(textWatcher);
mPassphraseEditAgain.addTextChangedListener(textWatcher);
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mCreateKeyActivity = (CreateKeyActivity) getActivity();
}
private void back() {
hideKeyboard();
mCreateKeyActivity.loadFragment(null, FragAction.TO_LEFT);
}
private void nextClicked() {
if (isEditTextNotEmpty(getActivity(), mPassphraseEdit)) {
if (!areEditTextsEqual(mPassphraseEdit, mPassphraseEditAgain)) {
mPassphraseEditAgain.setError(getActivity().getApplicationContext().getString(R.string.create_key_passphrases_not_equal));
mPassphraseEditAgain.requestFocus();
return;
}
mPassphraseEditAgain.setError(null);
// save state
mCreateKeyActivity.mPassphrase = new Passphrase(mPassphraseEdit);
CreateKeyFinalFragment frag = CreateKeyFinalFragment.newInstance();
hideKeyboard();
mCreateKeyActivity.loadFragment(frag, FragAction.TO_RIGHT);
}
}
private void hideKeyboard() {
if (getActivity() == null) {
return;
}
InputMethodManager inputManager = (InputMethodManager) getActivity()
.getSystemService(Context.INPUT_METHOD_SERVICE);
// check if no view has focus
View v = getActivity().getCurrentFocus();
if (v == null)
return;
inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0);
}
}
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