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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.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
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.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
import org.sufficientlysecure.keychain.provider.KeychainContract.Certs;
import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
import org.sufficientlysecure.keychain.util.Log;
import se.emilsjolander.stickylistheaders.ApiLevelTooLowException;
import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
public class ViewKeyCertsFragment extends Fragment
implements LoaderManager.LoaderCallbacks<Cursor>, AdapterView.OnItemClickListener {
// These are the rows that we will retrieve.
static final String[] PROJECTION = new String[] {
Certs._ID,
Certs.MASTER_KEY_ID,
Certs.VERIFIED,
Certs.RANK,
Certs.KEY_ID_CERTIFIER,
Certs.USER_ID,
Certs.SIGNER_UID
};
// sort by our user id,
static final String SORT_ORDER =
Tables.CERTS + "." + Certs.RANK + " ASC, "
+ Certs.VERIFIED + " DESC, "
+ Certs.SIGNER_UID + " ASC";
public static final String ARG_DATA_URI = "data_uri";
private StickyListHeadersListView mStickyList;
private Spinner mSpinner;
private CertListAdapter mAdapter;
private boolean mUnknownShown = false;
private Uri mBaseUri, mDataUri;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.view_key_certs_fragment, container, false);
return view;
}
private void changeShowState(int type) {
switch(type) {
case 0:
mDataUri = mBaseUri.buildUpon().appendPath("has_secret").build();
break;
case 1:
mDataUri = mBaseUri;
break;
case 2:
mDataUri = mBaseUri.buildUpon().appendPath("all").build();
break;
}
getLoaderManager().restartLoader(0, null, this);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mSpinner = (Spinner) getActivity().findViewById(R.id.spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_spinner_item, new String[] {
getResources().getString(R.string.certs_list_known_secret),
getResources().getString(R.string.certs_list_known),
getResources().getString(R.string.certs_list_all)
} );
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
mSpinner.setAdapter(adapter);
mSpinner.setSelection(1);
mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
changeShowState(i);
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
mStickyList = (StickyListHeadersListView) getActivity().findViewById(R.id.list);
if (!getArguments().containsKey(ARG_DATA_URI)) {
Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
getActivity().finish();
return;
}
Uri uri = getArguments().getParcelable(ARG_DATA_URI);
mBaseUri = Certs.buildCertsUri(uri);
mStickyList.setAreHeadersSticky(true);
mStickyList.setDrawingListUnderStickyHeader(false);
mStickyList.setFastScrollEnabled(true);
mStickyList.setOnItemClickListener(this);
try {
mStickyList.setFastScrollAlwaysVisible(true);
} catch (ApiLevelTooLowException e) {
}
mStickyList.setEmptyView(getActivity().findViewById(R.id.empty));
// TODO this view is made visible if no data is available
// mStickyList.setEmptyView(getActivity().findViewById(R.id.empty));
// Create an empty adapter we will use to display the loaded data.
mAdapter = new CertListAdapter(getActivity(), null);
mStickyList.setAdapter(mAdapter);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
mDataUri = mBaseUri;
getLoaderManager().initLoader(0, null, this);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(getActivity(), mDataUri, PROJECTION, null, null, SORT_ORDER);
}
@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);
mStickyList.setAdapter(mAdapter);
}
/**
* On click on item, start key view activity
*/
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
Intent viewIntent = null;
viewIntent = new Intent(getActivity(), ViewCertActivity.class);
viewIntent.setData(Certs.buildCertsUri(Long.toString(id)));
startActivity(viewIntent);
}
@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);
}
/**
* Implements StickyListHeadersAdapter from library
*/
private class CertListAdapter extends CursorAdapter implements StickyListHeadersAdapter {
private LayoutInflater mInflater;
private int mIndexCertId;
private int mIndexUserId, mIndexRank;
private int mIndexSignerKeyId, mIndexSignerUserId;
private int mIndexVerified;
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) {
mIndexCertId = cursor.getColumnIndexOrThrow(Certs.MASTER_KEY_ID);
mIndexUserId = cursor.getColumnIndexOrThrow(Certs.USER_ID);
mIndexRank = cursor.getColumnIndexOrThrow(Certs.RANK);
mIndexVerified = cursor.getColumnIndexOrThrow(Certs.VERIFIED);
mIndexSignerKeyId = cursor.getColumnIndexOrThrow(Certs.KEY_ID_CERTIFIER);
mIndexSignerUserId = cursor.getColumnIndexOrThrow(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 wSignerUserId = (TextView) view.findViewById(R.id.signerUserId);
TextView wSignStatus = (TextView) view.findViewById(R.id.signStatus);
String signerKeyId = PgpKeyHelper.convertKeyIdToHex(cursor.getLong(mIndexSignerKeyId));
String signerUserId = cursor.getString(mIndexSignerUserId);
String signStatus = cursor.getInt(mIndexVerified) > 0 ? "ok" : "unknown";
wSignerUserId.setText(signerUserId);
wSignerKeyId.setText(signerKeyId);
wSignStatus.setText(signStatus);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return mInflater.inflate(R.layout.view_key_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_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;
}
}
}
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