234 lines
8 KiB
Java
234 lines
8 KiB
Java
/*
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* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui.adapter;
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import java.util.HashMap;
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import java.util.Set;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
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import org.sufficientlysecure.keychain.provider.KeychainContract;
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import org.sufficientlysecure.keychain.util.Log;
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import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
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import android.annotation.SuppressLint;
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import android.content.Context;
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import android.database.Cursor;
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import android.graphics.Color;
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import android.support.v4.widget.CursorAdapter;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.RelativeLayout;
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import android.widget.TextView;
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/**
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* Implements StickyListHeadersAdapter from library
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*/
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public class KeyListPublicAdapter extends CursorAdapter implements StickyListHeadersAdapter {
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private LayoutInflater mInflater;
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private int mSectionColumnIndex;
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private int mIndexUserId;
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private int mIndexIsRevoked;
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@SuppressLint("UseSparseArrays")
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private HashMap<Integer, Boolean> mSelection = new HashMap<Integer, Boolean>();
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public KeyListPublicAdapter(Context context, Cursor c, int flags, int sectionColumnIndex) {
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super(context, c, flags);
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mInflater = LayoutInflater.from(context);
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mSectionColumnIndex = sectionColumnIndex;
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initIndex(c);
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}
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@Override
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public Cursor swapCursor(Cursor newCursor) {
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initIndex(newCursor);
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return super.swapCursor(newCursor);
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}
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/**
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* Get column indexes for performance reasons just once in constructor and swapCursor. For a
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* performance comparison see http://stackoverflow.com/a/17999582
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*
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* @param cursor
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*/
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private void initIndex(Cursor cursor) {
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if (cursor != null) {
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mIndexUserId = cursor.getColumnIndexOrThrow(KeychainContract.UserIds.USER_ID);
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mIndexIsRevoked = cursor.getColumnIndexOrThrow(KeychainContract.Keys.IS_REVOKED);
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}
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}
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/**
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* Bind cursor data to the item list view
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* <p/>
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* NOTE: CursorAdapter already implements the ViewHolder pattern in its getView() method. Thus
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* no ViewHolder is required here.
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*/
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@Override
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public void bindView(View view, Context context, Cursor cursor) {
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TextView mainUserId = (TextView) view.findViewById(R.id.mainUserId);
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TextView mainUserIdRest = (TextView) view.findViewById(R.id.mainUserIdRest);
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TextView revoked = (TextView) view.findViewById(R.id.revoked);
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String userId = cursor.getString(mIndexUserId);
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String[] userIdSplit = PgpKeyHelper.splitUserId(userId);
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if (userIdSplit[0] != null) {
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mainUserId.setText(userIdSplit[0]);
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} else {
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mainUserId.setText(R.string.user_id_no_name);
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}
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if (userIdSplit[1] != null) {
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mainUserIdRest.setText(userIdSplit[1]);
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mainUserIdRest.setVisibility(View.VISIBLE);
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} else {
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mainUserIdRest.setVisibility(View.GONE);
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}
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boolean isRevoked = cursor.getInt(mIndexIsRevoked) > 0;
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if (isRevoked) {
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revoked.setVisibility(View.VISIBLE);
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} else {
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revoked.setVisibility(View.GONE);
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}
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}
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@Override
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public View newView(Context context, Cursor cursor, ViewGroup parent) {
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return mInflater.inflate(R.layout.key_list_public_item, null);
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}
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/**
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* Creates a new header view and binds the section headers to it. It uses the ViewHolder
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* pattern. Most functionality is similar to getView() from Android's CursorAdapter.
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* <p/>
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* NOTE: The variables mDataValid and mCursor are available due to the super class
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* CursorAdapter.
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*/
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@Override
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public View getHeaderView(int position, View convertView, ViewGroup parent) {
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HeaderViewHolder holder;
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if (convertView == null) {
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holder = new HeaderViewHolder();
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convertView = mInflater.inflate(R.layout.key_list_public_header, parent, false);
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holder.text = (TextView) convertView.findViewById(R.id.stickylist_header_text);
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convertView.setTag(holder);
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} else {
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holder = (HeaderViewHolder) convertView.getTag();
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}
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if (!mDataValid) {
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// no data available at this point
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Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
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return convertView;
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}
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if (!mCursor.moveToPosition(position)) {
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throw new IllegalStateException("couldn't move cursor to position " + position);
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}
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// set header text as first char in user id
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String userId = mCursor.getString(mSectionColumnIndex);
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String headerText = convertView.getResources().getString(R.string.user_id_no_name);
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if (userId != null && userId.length() > 0) {
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headerText = "" + mCursor.getString(mSectionColumnIndex).subSequence(0, 1).charAt(0);
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}
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holder.text.setText(headerText);
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return convertView;
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}
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/**
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* Header IDs should be static, position=1 should always return the same Id that is.
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*/
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@Override
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public long getHeaderId(int position) {
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if (!mDataValid) {
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// no data available at this point
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Log.d(Constants.TAG, "getHeaderView: No data available at this point!");
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return -1;
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}
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if (!mCursor.moveToPosition(position)) {
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throw new IllegalStateException("couldn't move cursor to position " + position);
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}
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// return the first character of the name as ID because this is what
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// headers are based upon
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String userId = mCursor.getString(mSectionColumnIndex);
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if (userId != null && userId.length() > 0) {
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return userId.subSequence(0, 1).charAt(0);
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} else {
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return Long.MAX_VALUE;
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}
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}
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class HeaderViewHolder {
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TextView text;
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}
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/**
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* -------------------------- MULTI-SELECTION METHODS --------------
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*/
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public void setNewSelection(int position, boolean value) {
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mSelection.put(position, value);
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notifyDataSetChanged();
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}
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public boolean isPositionChecked(int position) {
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Boolean result = mSelection.get(position);
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return result == null ? false : result;
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}
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public Set<Integer> getCurrentCheckedPosition() {
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return mSelection.keySet();
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}
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public void removeSelection(int position) {
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mSelection.remove(position);
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notifyDataSetChanged();
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}
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public void clearSelection() {
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mSelection.clear();
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notifyDataSetChanged();
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}
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@Override
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public View getView(int position, View convertView, ViewGroup parent) {
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// let the adapter handle setting up the row views
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View v = super.getView(position, convertView, parent);
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/**
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* Change color for multi-selection
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*/
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// default color
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v.setBackgroundColor(Color.TRANSPARENT);
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if (mSelection.get(position) != null && mSelection.get(position).booleanValue()) {
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// this is a selected position, change color!
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v.setBackgroundColor(parent.getResources().getColor(R.color.emphasis));
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}
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return v;
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}
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}
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