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/*
* Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2010-2014 Thialfihar <thi@thialfihar.org>
*
* 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.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey.SecretKeyType;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.ui.adapter.SelectKeyCursorAdapter;
public class SelectSecretKeyFragment extends ListFragment implements
LoaderManager.LoaderCallbacks<Cursor> {
private SelectSecretKeyActivity mActivity;
private SelectKeyCursorAdapter mAdapter;
private boolean mFilterCertify, mFilterSign;
private static final String ARG_FILTER_CERTIFY = "filter_certify";
private static final String ARG_FILTER_SIGN = "filter_sign";
/**
* Creates new instance of this fragment
*
* filterCertify and filterSign must not both be set!
*/
public static SelectSecretKeyFragment newInstance(boolean filterCertify, boolean filterSign) {
SelectSecretKeyFragment frag = new SelectSecretKeyFragment();
Bundle args = new Bundle();
args.putBoolean(ARG_FILTER_CERTIFY, filterCertify);
args.putBoolean(ARG_FILTER_SIGN, filterSign);
frag.setArguments(args);
return frag;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mFilterCertify = getArguments().getBoolean(ARG_FILTER_CERTIFY);
mFilterSign = getArguments().getBoolean(ARG_FILTER_SIGN);
}
/**
* Define Adapter and Loader on create of Activity
*/
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mActivity = (SelectSecretKeyActivity) getActivity();
ListView listView = getListView();
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
long masterKeyId = mAdapter.getMasterKeyId(position);
Uri result = KeyRings.buildGenericKeyRingUri(masterKeyId);
// return data to activity, which results in finishing it
mActivity.afterListSelection(result);
}
});
// Give some text to display if there is no data. In a real
// application this would come from a resource.
setEmptyText(getString(R.string.list_empty));
mAdapter = new SelectSecretKeyCursorAdapter(mActivity, null, 0, listView);
setListAdapter(mAdapter);
// Start out with a progress indicator.
setListShown(false);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
getLoaderManager().initLoader(0, null, this);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// This is called when a new Loader needs to be created. This
// sample only has one Loader, so we don't care about the ID.
Uri baseUri = KeyRings.buildUnifiedKeyRingsUri();
// These are the rows that we will retrieve.
String[] projection = new String[]{
KeyRings._ID,
KeyRings.MASTER_KEY_ID,
KeyRings.USER_ID,
KeyRings.EXPIRY,
KeyRings.IS_REVOKED,
// can certify info only related to master key
KeyRings.CAN_CERTIFY,
// has sign may be any subkey
KeyRings.HAS_SIGN,
KeyRings.HAS_ANY_SECRET,
KeyRings.HAS_SECRET
};
String where = KeyRings.HAS_ANY_SECRET + " = 1";
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(getActivity(), baseUri, projection, where, null, null);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mAdapter.swapCursor(data);
// The list should now be shown.
if (isResumed()) {
setListShown(true);
} else {
setListShownNoAnimation(true);
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
// This is called when the last Cursor provided to onLoadFinished()
// above is about to be closed. We need to make sure we are no
// longer using it.
mAdapter.swapCursor(null);
}
private class SelectSecretKeyCursorAdapter extends SelectKeyCursorAdapter {
private int mIndexHasSign, mIndexCanCertify, mIndexHasSecret;
public SelectSecretKeyCursorAdapter(Context context, Cursor c, int flags, ListView listView) {
super(context, c, flags, listView);
}
@Override
protected void initIndex(Cursor cursor) {
super.initIndex(cursor);
if (cursor != null) {
mIndexCanCertify = cursor.getColumnIndexOrThrow(KeyRings.CAN_CERTIFY);
mIndexHasSign = cursor.getColumnIndexOrThrow(KeyRings.HAS_SIGN);
mIndexHasSecret = cursor.getColumnIndexOrThrow(KeyRings.HAS_SECRET);
}
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
super.bindView(view, context, cursor);
ViewHolderItem h = (SelectKeyCursorAdapter.ViewHolderItem) view.getTag();
// We don't care about the checkbox
h.selected.setVisibility(View.GONE);
// Special from superclass: Te
boolean enabled = false;
if((Boolean) h.status.getTag()) {
// Check if key is viable for our purposes (certify or sign)
if(mFilterCertify) {
// Only enable if can certify
if (cursor.getInt(mIndexCanCertify) == 0
|| !SecretKeyType.fromNum(cursor.getInt(mIndexHasSecret)).isUsable()) {
h.status.setText(R.string.can_certify_not);
} else {
h.status.setText(R.string.can_certify);
enabled = true;
}
} else if(mFilterSign) {
// Only enable if can sign
if (cursor.getInt(mIndexHasSign) == 0) {
h.status.setText(R.string.can_sign_not);
} else {
h.status.setText(R.string.can_sign);
enabled = true;
}
} else {
// No filters, just enable
enabled = true;
}
}
h.setEnabled(enabled);
// refresh this, too, for use in the ItemClickListener above
h.status.setTag(enabled);
}
}
}
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