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.app.Activity; import android.content.Context; import android.graphics.Typeface; import android.support.v4.app.FragmentActivity; import android.text.format.DateFormat; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.TextView; import org.bouncycastle.bcpg.sig.KeyFlags; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.service.SaveKeyringParcel; import org.sufficientlysecure.keychain.ui.dialog.AddSubkeyDialogFragment; import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils; import java.util.Calendar; import java.util.Date; import java.util.List; import java.util.TimeZone; public class SubkeysAddedAdapter extends ArrayAdapter<SaveKeyringParcel.SubkeyAdd> { private LayoutInflater mInflater; private Activity mActivity; private boolean mNewKeyring; public SubkeysAddedAdapter(Activity activity, List<SaveKeyringParcel.SubkeyAdd> data, boolean newKeyring) { super(activity, -1, data); mActivity = activity; mInflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mNewKeyring = newKeyring; } static class ViewHolder { public TextView vKeyId; public TextView vKeyDetails; public TextView vKeyExpiry; public ImageView vCertifyIcon; public ImageView vSignIcon; public ImageView vEncryptIcon; public ImageView vAuthenticateIcon; public ImageButton vDelete; // also hold a reference to the model item public SaveKeyringParcel.SubkeyAdd mModel; } public View getView(final int position, View convertView, ViewGroup parent) { if (convertView == null) { // Not recycled, inflate a new view convertView = mInflater.inflate(R.layout.view_key_adv_subkey_item, parent, false); final ViewHolder holder = new ViewHolder(); holder.vKeyId = (TextView) convertView.findViewById(R.id.subkey_item_key_id); holder.vKeyDetails = (TextView) convertView.findViewById(R.id.subkey_item_details); holder.vKeyExpiry = (TextView) convertView.findViewById(R.id.subkey_item_expiry); holder.vCertifyIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_certify); holder.vSignIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_sign); holder.vEncryptIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_encrypt); holder.vAuthenticateIcon = (ImageView) convertView.findViewById(R.id.subkey_item_ic_authenticate); holder.vDelete = (ImageButton) convertView.findViewById(R.id.subkey_item_delete_button); holder.vDelete.setVisibility(View.VISIBLE); // always visible // not used: ImageView vEdit = (ImageView) convertView.findViewById(R.id.subkey_item_edit_image); vEdit.setVisibility(View.GONE); ImageView vStatus = (ImageView) convertView.findViewById(R.id.subkey_item_status); vStatus.setVisibility(View.GONE); convertView.setTag(holder); } final ViewHolder holder = (ViewHolder) convertView.getTag(); // save reference to model item holder.mModel = getItem(position); String algorithmStr = KeyFormattingUtils.getAlgorithmInfo(mActivity, holder.mModel.mAlgorithm, holder.mModel.mKeySize, holder.mModel.mCurve); boolean isMasterKey = mNewKeyring && position == 0; if (isMasterKey) { holder.vKeyId.setTypeface(null, Typeface.BOLD); holder.vDelete.setImageResource(R.drawable.ic_change_grey_24dp); holder.vDelete.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // swapping out the old master key with newly set master key AddSubkeyDialogFragment addSubkeyDialogFragment = AddSubkeyDialogFragment.newInstance(true); addSubkeyDialogFragment.setOnAlgorithmSelectedListener( new AddSubkeyDialogFragment.OnAlgorithmSelectedListener() { @Override public void onAlgorithmSelected(SaveKeyringParcel.SubkeyAdd newSubkey) { // calculate manually as the provided position variable // is not always accurate int pos = SubkeysAddedAdapter.this.getPosition(holder.mModel); SubkeysAddedAdapter.this.remove(holder.mModel); SubkeysAddedAdapter.this.insert(newSubkey, pos); } }); addSubkeyDialogFragment.show(((FragmentActivity) mActivity).getSupportFragmentManager(), "addSubkeyDialog"); } }); } else { holder.vKeyId.setTypeface(null, Typeface.NORMAL); holder.vDelete.setImageResource(R.drawable.ic_close_grey_24dp); holder.vDelete.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // remove reference model item from adapter (data and notify about change) SubkeysAddedAdapter.this.remove(holder.mModel); } }); } holder.vKeyId.setText(R.string.edit_key_new_subkey); holder.vKeyDetails.setText(algorithmStr); if (holder.mModel.mExpiry != 0L) { Date expiryDate = new Date(holder.mModel.mExpiry * 1000); Calendar expiryCal = Calendar.getInstance(TimeZone.getTimeZone("UTC")); expiryCal.setTime(expiryDate); // convert from UTC to time zone of device expiryCal.setTimeZone(TimeZone.getDefault()); holder.vKeyExpiry.setText(getContext().getString(R.string.label_expiry) + ": " + DateFormat.getDateFormat(getContext()).format(expiryCal.getTime())); } else { holder.vKeyExpiry.setText( getContext().getString(R.string.label_expiry) + ": " + getContext().getString(R.string.none)); } int flags = holder.mModel.mFlags; if ((flags & KeyFlags.CERTIFY_OTHER) > 0) { holder.vCertifyIcon.setVisibility(View.VISIBLE); } else { holder.vCertifyIcon.setVisibility(View.GONE); } if ((flags & KeyFlags.SIGN_DATA) > 0) { holder.vSignIcon.setVisibility(View.VISIBLE); } else { holder.vSignIcon.setVisibility(View.GONE); } if (((flags & KeyFlags.ENCRYPT_COMMS) > 0) || ((flags & KeyFlags.ENCRYPT_STORAGE) > 0)) { holder.vEncryptIcon.setVisibility(View.VISIBLE); } else { holder.vEncryptIcon.setVisibility(View.GONE); } if ((flags & KeyFlags.AUTHENTICATION) > 0) { holder.vAuthenticateIcon.setVisibility(View.VISIBLE); } else { holder.vAuthenticateIcon.setVisibility(View.GONE); } return convertView; } }