open-keychain/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyAdvCertsFragment.java
2015-03-16 13:54:01 +01:00

343 lines
13 KiB
Java

/*
* Copyright (C) 2014-2015 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.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.CursorAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.TextView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.KeyRing;
import org.sufficientlysecure.keychain.pgp.WrappedSignature;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.KeychainDatabase;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
import org.sufficientlysecure.keychain.util.Log;
import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
public class ViewKeyAdvCertsFragment extends LoaderFragment implements
LoaderManager.LoaderCallbacks<Cursor>, AdapterView.OnItemClickListener {
public static final String ARG_DATA_URI = "data_uri";
private StickyListHeadersListView mStickyList;
private CertListAdapter mCertsAdapter;
private Uri mDataUriCerts;
// These are the rows that we will retrieve.
static final String[] CERTS_PROJECTION = new String[]{
KeychainContract.Certs._ID,
KeychainContract.Certs.MASTER_KEY_ID,
KeychainContract.Certs.VERIFIED,
KeychainContract.Certs.TYPE,
KeychainContract.Certs.RANK,
KeychainContract.Certs.KEY_ID_CERTIFIER,
KeychainContract.Certs.USER_ID,
KeychainContract.Certs.SIGNER_UID
};
// sort by our user id,
static final String CERTS_SORT_ORDER =
KeychainDatabase.Tables.CERTS + "." + KeychainContract.Certs.RANK + " ASC, "
+ KeychainContract.Certs.VERIFIED + " DESC, "
+ KeychainDatabase.Tables.CERTS + "." + KeychainContract.Certs.TYPE + " DESC, "
+ KeychainContract.Certs.SIGNER_UID + " ASC";
/**
* Creates new instance of this fragment
*/
public static ViewKeyAdvCertsFragment newInstance(Uri dataUri) {
ViewKeyAdvCertsFragment frag = new ViewKeyAdvCertsFragment();
Bundle args = new Bundle();
args.putParcelable(ARG_DATA_URI, dataUri);
frag.setArguments(args);
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
View root = super.onCreateView(inflater, superContainer, savedInstanceState);
View view = inflater.inflate(R.layout.view_key_adv_certs_fragment, getContainer());
mStickyList = (StickyListHeadersListView) view.findViewById(R.id.certs_list);
return root;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Uri dataUri = getArguments().getParcelable(ARG_DATA_URI);
if (dataUri == null) {
Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
getActivity().finish();
return;
}
loadData(dataUri);
}
private void loadData(Uri dataUri) {
mDataUriCerts = KeychainContract.Certs.buildCertsUri(dataUri);
mStickyList.setAreHeadersSticky(true);
mStickyList.setDrawingListUnderStickyHeader(false);
mStickyList.setOnItemClickListener(this);
mStickyList.setEmptyView(getActivity().findViewById(R.id.empty));
// Create an empty adapter we will use to display the loaded data.
mCertsAdapter = new CertListAdapter(getActivity(), null);
mStickyList.setAdapter(mCertsAdapter);
// Prepare the loaders. Either re-connect with an existing ones,
// or start new ones.
getLoaderManager().initLoader(0, null, this);
}
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
setContentShown(false);
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(getActivity(), mDataUriCerts,
CERTS_PROJECTION, null, null, CERTS_SORT_ORDER);
}
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Avoid NullPointerExceptions, if we get an empty result set.
if (data.getCount() == 0) {
return;
}
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
mCertsAdapter.swapCursor(data);
mStickyList.setAdapter(mCertsAdapter);
// TODO: maybe show not before both are loaded!
setContentShown(true);
}
/**
* 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.
*/
public void onLoaderReset(Loader<Cursor> loader) {
mCertsAdapter.swapCursor(null);
}
/**
* On click on item, start key view activity
*/
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
if (view.getTag(R.id.tag_mki) != null) {
long masterKeyId = (Long) view.getTag(R.id.tag_mki);
long rank = (Long) view.getTag(R.id.tag_rank);
long certifierId = (Long) view.getTag(R.id.tag_certifierId);
Intent viewIntent = new Intent(getActivity(), ViewCertActivity.class);
viewIntent.setData(KeychainContract.Certs.buildCertsSpecificUri(
masterKeyId, rank, certifierId));
startActivity(viewIntent);
}
}
/**
* Implements StickyListHeadersAdapter from library
*/
private class CertListAdapter extends CursorAdapter implements StickyListHeadersAdapter {
private LayoutInflater mInflater;
private int mIndexMasterKeyId, mIndexUserId, mIndexRank;
private int mIndexSignerKeyId, mIndexSignerUserId;
private int mIndexVerified, mIndexType;
public CertListAdapter(Context context, Cursor c) {
super(context, c, 0);
mInflater = LayoutInflater.from(context);
initIndex(c);
}
@Override
public Cursor swapCursor(Cursor newCursor) {
initIndex(newCursor);
return super.swapCursor(newCursor);
}
/**
* Get column indexes for performance reasons just once in constructor and swapCursor. For a
* performance comparison see http://stackoverflow.com/a/17999582
*
* @param cursor
*/
private void initIndex(Cursor cursor) {
if (cursor != null) {
mIndexMasterKeyId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.MASTER_KEY_ID);
mIndexUserId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.USER_ID);
mIndexRank = cursor.getColumnIndexOrThrow(KeychainContract.Certs.RANK);
mIndexType = cursor.getColumnIndexOrThrow(KeychainContract.Certs.TYPE);
mIndexVerified = cursor.getColumnIndexOrThrow(KeychainContract.Certs.VERIFIED);
mIndexSignerKeyId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.KEY_ID_CERTIFIER);
mIndexSignerUserId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.SIGNER_UID);
}
}
/**
* Bind cursor data to the item list view
* <p/>
* NOTE: CursorAdapter already implements the ViewHolder pattern in its getView() method.
* Thus no ViewHolder is required here.
*/
@Override
public void bindView(View view, Context context, Cursor cursor) {
// set name and stuff, common to both key types
TextView wSignerKeyId = (TextView) view.findViewById(R.id.signerKeyId);
TextView wSignerName = (TextView) view.findViewById(R.id.signerName);
TextView wSignStatus = (TextView) view.findViewById(R.id.signStatus);
String signerKeyId = KeyFormattingUtils.beautifyKeyIdWithPrefix(getActivity(), cursor.getLong(mIndexSignerKeyId));
KeyRing.UserId userId = KeyRing.splitUserId(cursor.getString(mIndexSignerUserId));
if (userId.name != null) {
wSignerName.setText(userId.name);
} else {
wSignerName.setText(R.string.user_id_no_name);
}
wSignerKeyId.setText(signerKeyId);
switch (cursor.getInt(mIndexType)) {
case WrappedSignature.DEFAULT_CERTIFICATION: // 0x10
wSignStatus.setText(R.string.cert_default);
break;
case WrappedSignature.NO_CERTIFICATION: // 0x11
wSignStatus.setText(R.string.cert_none);
break;
case WrappedSignature.CASUAL_CERTIFICATION: // 0x12
wSignStatus.setText(R.string.cert_casual);
break;
case WrappedSignature.POSITIVE_CERTIFICATION: // 0x13
wSignStatus.setText(R.string.cert_positive);
break;
case WrappedSignature.CERTIFICATION_REVOCATION: // 0x30
wSignStatus.setText(R.string.cert_revoke);
break;
}
view.setTag(R.id.tag_mki, cursor.getLong(mIndexMasterKeyId));
view.setTag(R.id.tag_rank, cursor.getLong(mIndexRank));
view.setTag(R.id.tag_certifierId, cursor.getLong(mIndexSignerKeyId));
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return mInflater.inflate(R.layout.view_key_adv_certs_item, parent, false);
}
/**
* Creates a new header view and binds the section headers to it. It uses the ViewHolder
* pattern. Most functionality is similar to getView() from Android's CursorAdapter.
* <p/>
* NOTE: The variables mDataValid and mCursor are available due to the super class
* CursorAdapter.
*/
@Override
public View getHeaderView(int position, View convertView, ViewGroup parent) {
HeaderViewHolder holder;
if (convertView == null) {
holder = new HeaderViewHolder();
convertView = mInflater.inflate(R.layout.view_key_adv_certs_header, parent, false);
holder.text = (TextView) convertView.findViewById(R.id.stickylist_header_text);
holder.count = (TextView) convertView.findViewById(R.id.certs_num);
convertView.setTag(holder);
} else {
holder = (HeaderViewHolder) convertView.getTag();
}
if (!mDataValid) {
// no data available at this point
Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
return convertView;
}
if (!mCursor.moveToPosition(position)) {
throw new IllegalStateException("couldn't move cursor to position " + position);
}
// set header text as first char in user id
String userId = mCursor.getString(mIndexUserId);
holder.text.setText(userId);
holder.count.setVisibility(View.GONE);
return convertView;
}
/**
* Header IDs should be static, position=1 should always return the same Id that is.
*/
@Override
public long getHeaderId(int position) {
if (!mDataValid) {
// no data available at this point
Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
return -1;
}
if (!mCursor.moveToPosition(position)) {
throw new IllegalStateException("couldn't move cursor to position " + position);
}
// otherwise, return the first character of the name as ID
return mCursor.getInt(mIndexRank);
// sort by the first four characters (should be enough I guess?)
// return ByteBuffer.wrap(userId.getBytes()).asLongBuffer().get(0);
}
class HeaderViewHolder {
TextView text;
TextView count;
}
}
}