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open-keychain/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/ui/SelectPublicKeyFragment.java

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/*
* Copyright (C) 2012-2013 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.sufficientlysecure.keychain.ui;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseUtils;
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.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.compatibility.ListFragmentWorkaround;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
import org.sufficientlysecure.keychain.provider.KeychainDatabase;
import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
import org.sufficientlysecure.keychain.ui.adapter.SelectKeyCursorAdapter;
import java.util.Date;
import java.util.Vector;
public class SelectPublicKeyFragment extends ListFragmentWorkaround implements TextWatcher,
LoaderManager.LoaderCallbacks<Cursor> {
public static final String ARG_PRESELECTED_KEY_IDS = "preselected_key_ids";
private SelectKeyCursorAdapter mAdapter;
private EditText mSearchView;
private long mSelectedMasterKeyIds[];
private String mCurQuery;
// copied from ListFragment
static final int INTERNAL_EMPTY_ID = 0x00ff0001;
static final int INTERNAL_PROGRESS_CONTAINER_ID = 0x00ff0002;
static final int INTERNAL_LIST_CONTAINER_ID = 0x00ff0003;
// added for search view
static final int SEARCH_ID = 0x00ff0004;
/**
* Creates new instance of this fragment
*/
public static SelectPublicKeyFragment newInstance(long[] preselectedKeyIds) {
SelectPublicKeyFragment frag = new SelectPublicKeyFragment();
Bundle args = new Bundle();
args.putLongArray(ARG_PRESELECTED_KEY_IDS, preselectedKeyIds);
frag.setArguments(args);
return frag;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mSelectedMasterKeyIds = getArguments().getLongArray(ARG_PRESELECTED_KEY_IDS);
}
/**
* Copied from ListFragment and added EditText for search on top of list.
* We do not use a custom layout here, because this breaks the progress bar functionality
* of ListFragment.
*
* @param inflater
* @param container
* @param savedInstanceState
* @return
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final Context context = getActivity();
FrameLayout root = new FrameLayout(context);
// ------------------------------------------------------------------
LinearLayout pframe = new LinearLayout(context);
pframe.setId(INTERNAL_PROGRESS_CONTAINER_ID);
pframe.setOrientation(LinearLayout.VERTICAL);
pframe.setVisibility(View.GONE);
pframe.setGravity(Gravity.CENTER);
ProgressBar progress = new ProgressBar(context, null,
android.R.attr.progressBarStyleLarge);
pframe.addView(progress, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
root.addView(pframe, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
// ------------------------------------------------------------------
FrameLayout lframe = new FrameLayout(context);
lframe.setId(INTERNAL_LIST_CONTAINER_ID);
TextView tv = new TextView(getActivity());
tv.setId(INTERNAL_EMPTY_ID);
tv.setGravity(Gravity.CENTER);
lframe.addView(tv, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
// Added for search view: linearLayout, mSearchView
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.setOrientation(LinearLayout.VERTICAL);
mSearchView = new EditText(context);
mSearchView.setId(SEARCH_ID);
mSearchView.setHint(R.string.menu_search);
mSearchView.setCompoundDrawablesWithIntrinsicBounds(
getResources().getDrawable(R.drawable.ic_action_search), null, null, null);
linearLayout.addView(mSearchView, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
ListView lv = new ListView(getActivity());
lv.setId(android.R.id.list);
lv.setDrawSelectorOnTop(false);
linearLayout.addView(lv, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
lframe.addView(linearLayout, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
root.addView(lframe, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
// ------------------------------------------------------------------
root.setLayoutParams(new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
return root;
}
/**
* Define Adapter and Loader on create of Activity
*/
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
// 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));
mSearchView.addTextChangedListener(this);
mAdapter = new SelectKeyCursorAdapter(getActivity(), null, 0, getListView(), Id.type.public_key);
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);
}
/**
* Selects items based on master key ids in list view
*
* @param masterKeyIds
*/
private void preselectMasterKeyIds(long[] masterKeyIds) {
if (masterKeyIds != null) {
for (int i = 0; i < getListView().getCount(); ++i) {
long keyId = mAdapter.getMasterKeyId(i);
for (long masterKeyId : masterKeyIds) {
if (keyId == masterKeyId) {
getListView().setItemChecked(i, true);
break;
}
}
}
}
}
/**
* Returns all selected master key ids
*
* @return
*/
public long[] getSelectedMasterKeyIds() {
// mListView.getCheckedItemIds() would give the row ids of the KeyRings not the master key
// ids!
Vector<Long> vector = new Vector<Long>();
for (int i = 0; i < getListView().getCount(); ++i) {
if (getListView().isItemChecked(i)) {
vector.add(mAdapter.getMasterKeyId(i));
}
}
// convert to long array
long[] selectedMasterKeyIds = new long[vector.size()];
for (int i = 0; i < vector.size(); ++i) {
selectedMasterKeyIds[i] = vector.get(i);
}
return selectedMasterKeyIds;
}
/**
* Returns all selected user ids
*
* @return
*/
public String[] getSelectedUserIds() {
Vector<String> userIds = new Vector<String>();
for (int i = 0; i < getListView().getCount(); ++i) {
if (getListView().isItemChecked(i)) {
userIds.add((String) mAdapter.getUserId(i));
}
}
// make empty array to not return null
String userIdArray[] = new String[0];
return userIds.toArray(userIdArray);
}
@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.buildPublicKeyRingsUri();
// These are the rows that we will retrieve.
long now = new Date().getTime() / 1000;
String[] projection = new String[]{
KeyRings._ID,
KeyRings.MASTER_KEY_ID,
UserIds.USER_ID,
"(SELECT COUNT(available_keys." + Keys._ID + ") FROM " + Tables.KEYS
+ " AS available_keys WHERE available_keys." + Keys.KEY_RING_ROW_ID + " = "
+ KeychainDatabase.Tables.KEY_RINGS + "." + KeyRings._ID
+ " AND available_keys." + Keys.IS_REVOKED + " = '0' AND available_keys."
+ Keys.CAN_ENCRYPT + " = '1') AS "
+ SelectKeyCursorAdapter.PROJECTION_ROW_AVAILABLE,
"(SELECT COUNT(valid_keys." + Keys._ID + ") FROM " + Tables.KEYS
+ " AS valid_keys WHERE valid_keys." + Keys.KEY_RING_ROW_ID + " = "
+ KeychainDatabase.Tables.KEY_RINGS + "." + KeyRings._ID
+ " AND valid_keys." + Keys.IS_REVOKED + " = '0' AND valid_keys."
+ Keys.CAN_ENCRYPT + " = '1' AND valid_keys." + Keys.CREATION + " <= '"
+ now + "' AND " + "(valid_keys." + Keys.EXPIRY + " IS NULL OR valid_keys."
+ Keys.EXPIRY + " >= '" + now + "')) AS "
+ SelectKeyCursorAdapter.PROJECTION_ROW_VALID, };
String inMasterKeyList = null;
if (mSelectedMasterKeyIds != null && mSelectedMasterKeyIds.length > 0) {
inMasterKeyList = KeyRings.MASTER_KEY_ID + " IN (";
for (int i = 0; i < mSelectedMasterKeyIds.length; ++i) {
if (i != 0) {
inMasterKeyList += ", ";
}
inMasterKeyList += DatabaseUtils.sqlEscapeString("" + mSelectedMasterKeyIds[i]);
}
inMasterKeyList += ")";
}
String orderBy = UserIds.USER_ID + " ASC";
if (inMasterKeyList != null) {
// sort by selected master keys
orderBy = inMasterKeyList + " DESC, " + orderBy;
}
String where = null;
String whereArgs[] = null;
if (mCurQuery != null) {
where = UserIds.USER_ID + " LIKE ?";
whereArgs = new String[]{"%" + mCurQuery + "%"};
}
// 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, whereArgs, orderBy);
}
@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.setSearchQuery(mCurQuery);
mAdapter.swapCursor(data);
// The list should now be shown.
if (isResumed()) {
setListShown(true);
} else {
setListShownNoAnimation(true);
}
// preselect given master keys
preselectMasterKeyIds(mSelectedMasterKeyIds);
}
@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);
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
}
@Override
public void afterTextChanged(Editable editable) {
mCurQuery = !TextUtils.isEmpty(editable.toString()) ? editable.toString() : null;
getLoaderManager().restartLoader(0, null, this);
}
}
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