Java tutorial
/* * Copyright (C) 2014 Dominik Schrmann <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.adapter; import android.content.Context; import android.database.Cursor; import android.os.Parcel; import android.support.v4.util.LongSparseArray; import android.support.v4.widget.CursorAdapter; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.TextView; import org.openintents.openpgp.util.OpenPgpUtils; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.pgp.KeyRing; import org.sufficientlysecure.keychain.service.CertifyActionsParcel.CertifyAction; import java.util.ArrayList; public class MultiUserIdsAdapter extends CursorAdapter { private LayoutInflater mInflater; private final ArrayList<Boolean> mCheckStates; private boolean checkboxVisibility = true; public MultiUserIdsAdapter(Context context, Cursor c, int flags, ArrayList<Boolean> preselectStates) { super(context, c, flags); mInflater = LayoutInflater.from(context); mCheckStates = preselectStates == null ? new ArrayList<Boolean>() : preselectStates; } public MultiUserIdsAdapter(Context context, Cursor c, int flags, ArrayList<Boolean> preselectStates, boolean checkboxVisibility) { this(context, c, flags, preselectStates); this.checkboxVisibility = checkboxVisibility; } @Override public Cursor swapCursor(Cursor newCursor) { if (newCursor != null) { int count = newCursor.getCount(); mCheckStates.ensureCapacity(count); // initialize new fields to true (use case knowledge: we usually want to sign all uids) for (int i = mCheckStates.size(); i < count; i++) { mCheckStates.add(true); } } return super.swapCursor(newCursor); } @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { return mInflater.inflate(R.layout.certify_item, null); } @Override public void bindView(View view, Context context, Cursor cursor) { TextView vHeaderId = (TextView) view.findViewById(R.id.user_id_header); TextView vName = (TextView) view.findViewById(R.id.user_id_item_name); TextView vAddresses = (TextView) view.findViewById(R.id.user_id_item_addresses); byte[] data = cursor.getBlob(1); int isHeader = cursor.getInt(2); Parcel p = Parcel.obtain(); p.unmarshall(data, 0, data.length); p.setDataPosition(0); ArrayList<String> uids = p.createStringArrayList(); p.recycle(); { // first one String userId = uids.get(0); OpenPgpUtils.UserId splitUserId = KeyRing.splitUserId(userId); if (splitUserId.name != null) { vName.setText(splitUserId.name); } else { vName.setText(R.string.user_id_no_name); } if (isHeader == 1) { vHeaderId.setVisibility(View.VISIBLE); String message; if (splitUserId.name != null) { message = mContext.getString(R.string.section_uids_to_certify) + splitUserId.name; } else { message = mContext.getString(R.string.section_uids_to_certify) + context.getString(R.string.user_id_no_name); } vHeaderId.setText(message); } else { vHeaderId.setVisibility(View.GONE); } } StringBuilder lines = new StringBuilder(); for (String uid : uids) { OpenPgpUtils.UserId splitUserId = KeyRing.splitUserId(uid); if (splitUserId.email == null) { continue; } lines.append(splitUserId.email); if (splitUserId.comment != null) { lines.append(" (").append(splitUserId.comment).append(")"); } lines.append('\n'); } // If we have any data here, show it if (lines.length() > 0) { // delete last newline lines.setLength(lines.length() - 1); vAddresses.setVisibility(View.VISIBLE); vAddresses.setText(lines); } else { vAddresses.setVisibility(View.GONE); } final CheckBox vCheckBox = (CheckBox) view.findViewById(R.id.user_id_item_check_box); final int position = cursor.getPosition(); vCheckBox.setOnCheckedChangeListener(null); vCheckBox.setChecked(mCheckStates.get(position)); vCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton compoundButton, boolean b) { mCheckStates.set(position, b); } }); vCheckBox.setClickable(false); vCheckBox.setVisibility(checkboxVisibility ? View.VISIBLE : View.GONE); View vUidBody = view.findViewById(R.id.user_id_body); vUidBody.setClickable(true); vUidBody.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { vCheckBox.toggle(); } }); } public ArrayList<Boolean> getCheckStates() { return mCheckStates; } public ArrayList<CertifyAction> getSelectedCertifyActions() { LongSparseArray<CertifyAction> actions = new LongSparseArray<>(); for (int i = 0; i < mCheckStates.size(); i++) { if (mCheckStates.get(i)) { mCursor.moveToPosition(i); long keyId = mCursor.getLong(0); byte[] data = mCursor.getBlob(1); Parcel p = Parcel.obtain(); p.unmarshall(data, 0, data.length); p.setDataPosition(0); ArrayList<String> uids = p.createStringArrayList(); p.recycle(); CertifyAction action = actions.get(keyId); if (actions.get(keyId) == null) { actions.put(keyId, new CertifyAction(keyId, uids, null)); } else { action.mUserIds.addAll(uids); } } } ArrayList<CertifyAction> result = new ArrayList<>(actions.size()); for (int i = 0; i < actions.size(); i++) { result.add(actions.valueAt(i)); } return result; } }