session-android/src/org/thoughtcrime/securesms/recipients/RecipientProvider.java

/**
 * Copyright (C) 2011 Whisper Systems
 *
 * 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.thoughtcrime.securesms.recipients;

import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.PhoneLookup;

import org.thoughtcrime.securesms.R;

import java.io.InputStream;

public class RecipientProvider {

  private static Bitmap defaultContactPhoto;

  private static final String[] CALLER_ID_PROJECTION = new String[] {
    PhoneLookup.DISPLAY_NAME,
    PhoneLookup.LOOKUP_KEY,
    PhoneLookup._ID,
  };

  private static final String[] CONTENT_URI_PROJECTION = new String[] {
    ContactsContract.Contacts._ID,
    ContactsContract.Contacts.DISPLAY_NAME,
    ContactsContract.Contacts.LOOKUP_KEY
  };

  public Recipient getRecipient(Context context, Uri uri) {
    Cursor cursor = context.getContentResolver().query(uri, CONTENT_URI_PROJECTION, null, null, null);

    try {
      if (cursor.moveToFirst()) {
        long rowId          = cursor.getLong(0);
        Uri contactUri      = Contacts.getLookupUri(rowId, cursor.getString(2));
        Bitmap contactPhoto = getContactPhoto(context, Uri.withAppendedPath(Contacts.CONTENT_URI,
                                                                            rowId+""));
        String displayName  = cursor.getString(1);
        cursor.close();

        cursor = context.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, new String[] {ContactsContract.CommonDataKinds.Phone.NUMBER}, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?", new String[] {rowId+""}, null);

        if (cursor.moveToFirst())
          return new Recipient(displayName, cursor.getString(0), contactUri, contactPhoto);
        else
          return new Recipient(displayName, null, contactUri, contactPhoto);
      }
    } finally {
      cursor.close();
    }

    return null;
  }

  public Recipient getRecipient(Context context, String number) {
    Uri uri       = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
    Cursor cursor = context.getContentResolver().query(uri, CALLER_ID_PROJECTION, null, null, null);

    try {
      if (cursor != null && cursor.moveToFirst()) {
        Uri contactUri      = Contacts.getLookupUri(cursor.getLong(2), cursor.getString(1));
        Bitmap contactPhoto = getContactPhoto(context, Uri.withAppendedPath(Contacts.CONTENT_URI,
                                                                            cursor.getLong(2)+""));

        Recipient recipient = new Recipient(cursor.getString(0), number, contactUri, contactPhoto);
        return recipient;
      }
    } finally {
      if (cursor != null)
        cursor.close();
    }

    return null;
  }

  public Bitmap getDefaultContactPhoto(Context context) {
    synchronized (this) {
      if (defaultContactPhoto == null)
        defaultContactPhoto =  BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_contact_picture);
    }

    return defaultContactPhoto;
  }

  private Bitmap getContactPhoto(Context context, Uri uri) {
    InputStream inputStream = ContactsContract.Contacts.openContactPhotoInputStream(context.getContentResolver(), uri);

    if (inputStream == null)
      return getDefaultContactPhoto(context);
    else
      return BitmapFactory.decodeStream(inputStream);
  }

}