New advanced key view

1 files changed, 342 insertions, 0 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyAdvCertsFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyAdvCertsFragment.java
new file mode 100644
index 000000000..83daa541d
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyAdvCertsFragment.java
@@ -0,0 +1,342 @@
+/*
+ * Copyright (C) 2014-2015 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.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.TextView;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.KeyRing;
+import org.sufficientlysecure.keychain.pgp.WrappedSignature;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.KeychainDatabase;
+import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
+import org.sufficientlysecure.keychain.util.Log;
+
+import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
+import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
+
+
+public class ViewKeyAdvCertsFragment extends LoaderFragment implements
+        LoaderManager.LoaderCallbacks<Cursor>, AdapterView.OnItemClickListener {
+
+    public static final String ARG_DATA_URI = "data_uri";
+
+    private StickyListHeadersListView mStickyList;
+    private CertListAdapter mCertsAdapter;
+
+    private Uri mDataUriCerts;
+
+    // These are the rows that we will retrieve.
+    static final String[] CERTS_PROJECTION = new String[]{
+            KeychainContract.Certs._ID,
+            KeychainContract.Certs.MASTER_KEY_ID,
+            KeychainContract.Certs.VERIFIED,
+            KeychainContract.Certs.TYPE,
+            KeychainContract.Certs.RANK,
+            KeychainContract.Certs.KEY_ID_CERTIFIER,
+            KeychainContract.Certs.USER_ID,
+            KeychainContract.Certs.SIGNER_UID
+    };
+
+    // sort by our user id,
+    static final String CERTS_SORT_ORDER =
+            KeychainDatabase.Tables.CERTS + "." + KeychainContract.Certs.RANK + " ASC, "
+                    + KeychainContract.Certs.VERIFIED + " DESC, "
+                    + KeychainDatabase.Tables.CERTS + "." + KeychainContract.Certs.TYPE + " DESC, "
+                    + KeychainContract.Certs.SIGNER_UID + " ASC";
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static ViewKeyAdvCertsFragment newInstance(Uri dataUri) {
+        ViewKeyAdvCertsFragment frag = new ViewKeyAdvCertsFragment();
+
+        Bundle args = new Bundle();
+        args.putParcelable(ARG_DATA_URI, dataUri);
+
+        frag.setArguments(args);
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
+        View root = super.onCreateView(inflater, superContainer, savedInstanceState);
+        View view = inflater.inflate(R.layout.view_key_adv_certs_fragment, getContainer());
+
+        mStickyList = (StickyListHeadersListView) view.findViewById(R.id.certs_list);
+
+        return root;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        Uri dataUri = getArguments().getParcelable(ARG_DATA_URI);
+        if (dataUri == null) {
+            Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
+            getActivity().finish();
+            return;
+        }
+
+        loadData(dataUri);
+    }
+
+    private void loadData(Uri dataUri) {
+        mDataUriCerts = KeychainContract.Certs.buildCertsUri(dataUri);
+
+        mStickyList.setAreHeadersSticky(true);
+        mStickyList.setDrawingListUnderStickyHeader(false);
+        mStickyList.setOnItemClickListener(this);
+
+        mStickyList.setEmptyView(getActivity().findViewById(R.id.empty));
+
+        // Create an empty adapter we will use to display the loaded data.
+        mCertsAdapter = new CertListAdapter(getActivity(), null);
+        mStickyList.setAdapter(mCertsAdapter);
+
+        // Prepare the loaders. Either re-connect with an existing ones,
+        // or start new ones.
+        getLoaderManager().initLoader(0, null, this);
+    }
+
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        setContentShown(false);
+
+
+        // Now create and return a CursorLoader that will take care of
+        // creating a Cursor for the data being displayed.
+        return new CursorLoader(getActivity(), mDataUriCerts,
+                CERTS_PROJECTION, null, null, CERTS_SORT_ORDER);
+
+    }
+
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        // Avoid NullPointerExceptions, if we get an empty result set.
+        if (data.getCount() == 0) {
+            return;
+        }
+
+        // Swap the new cursor in. (The framework will take care of closing the
+        // old cursor once we return.)
+        mCertsAdapter.swapCursor(data);
+        mStickyList.setAdapter(mCertsAdapter);
+
+        // TODO: maybe show not before both are loaded!
+        setContentShown(true);
+    }
+
+    /**
+     * 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.
+     */
+    public void onLoaderReset(Loader<Cursor> loader) {
+        mCertsAdapter.swapCursor(null);
+    }
+
+    /**
+     * On click on item, start key view activity
+     */
+    @Override
+    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+        if (view.getTag(R.id.tag_mki) != null) {
+            long masterKeyId = (Long) view.getTag(R.id.tag_mki);
+            long rank = (Long) view.getTag(R.id.tag_rank);
+            long certifierId = (Long) view.getTag(R.id.tag_certifierId);
+
+            Intent viewIntent = new Intent(getActivity(), ViewCertActivity.class);
+            viewIntent.setData(KeychainContract.Certs.buildCertsSpecificUri(
+                    masterKeyId, rank, certifierId));
+            startActivity(viewIntent);
+        }
+    }
+
+
+    /**
+     * Implements StickyListHeadersAdapter from library
+     */
+    private class CertListAdapter extends CursorAdapter implements StickyListHeadersAdapter {
+        private LayoutInflater mInflater;
+        private int mIndexMasterKeyId, mIndexUserId, mIndexRank;
+        private int mIndexSignerKeyId, mIndexSignerUserId;
+        private int mIndexVerified, mIndexType;
+
+        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) {
+                mIndexMasterKeyId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.MASTER_KEY_ID);
+                mIndexUserId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.USER_ID);
+                mIndexRank = cursor.getColumnIndexOrThrow(KeychainContract.Certs.RANK);
+                mIndexType = cursor.getColumnIndexOrThrow(KeychainContract.Certs.TYPE);
+                mIndexVerified = cursor.getColumnIndexOrThrow(KeychainContract.Certs.VERIFIED);
+                mIndexSignerKeyId = cursor.getColumnIndexOrThrow(KeychainContract.Certs.KEY_ID_CERTIFIER);
+                mIndexSignerUserId = cursor.getColumnIndexOrThrow(KeychainContract.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 wSignerName = (TextView) view.findViewById(R.id.signerName);
+            TextView wSignStatus = (TextView) view.findViewById(R.id.signStatus);
+
+            String signerKeyId = KeyFormattingUtils.beautifyKeyIdWithPrefix(getActivity(), cursor.getLong(mIndexSignerKeyId));
+            String[] userId = KeyRing.splitUserId(cursor.getString(mIndexSignerUserId));
+            if (userId[0] != null) {
+                wSignerName.setText(userId[0]);
+            } else {
+                wSignerName.setText(R.string.user_id_no_name);
+            }
+            wSignerKeyId.setText(signerKeyId);
+
+            switch (cursor.getInt(mIndexType)) {
+                case WrappedSignature.DEFAULT_CERTIFICATION: // 0x10
+                    wSignStatus.setText(R.string.cert_default);
+                    break;
+                case WrappedSignature.NO_CERTIFICATION: // 0x11
+                    wSignStatus.setText(R.string.cert_none);
+                    break;
+                case WrappedSignature.CASUAL_CERTIFICATION: // 0x12
+                    wSignStatus.setText(R.string.cert_casual);
+                    break;
+                case WrappedSignature.POSITIVE_CERTIFICATION: // 0x13
+                    wSignStatus.setText(R.string.cert_positive);
+                    break;
+                case WrappedSignature.CERTIFICATION_REVOCATION: // 0x30
+                    wSignStatus.setText(R.string.cert_revoke);
+                    break;
+            }
+
+
+            view.setTag(R.id.tag_mki, cursor.getLong(mIndexMasterKeyId));
+            view.setTag(R.id.tag_rank, cursor.getLong(mIndexRank));
+            view.setTag(R.id.tag_certifierId, cursor.getLong(mIndexSignerKeyId));
+        }
+
+        @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;
+        }
+
+    }
+}