EmailAddressAdapter.java

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// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2009-2011 Google, All Rights reserved
// Copyright 2011-2012 MIT, All rights reserved
// Released under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0
 
package com.google.appinventor.components.runtime;
 
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.provider.Contacts.ContactMethods;
import android.provider.Contacts.People;
import android.text.TextUtils;
import android.text.util.Rfc822Token;
import android.view.View;
import android.widget.ResourceCursorAdapter;
import android.widget.TextView;
import android.util.Log;
 
import com.google.appinventor.components.runtime.util.HoneycombMR1Util;
import com.google.appinventor.components.runtime.util.SdkLevel;
 
public class EmailAddressAdapter extends ResourceCursorAdapter {
 
  private static final boolean DEBUG = false;
  private static final String TAG = "EmailAddressAdapter";
 
  public static final int PRE_HONEYCOMB_NAME_INDEX = 1;
  public static final int PRE_HONEYCOMB_DATA_INDEX = 2;
 
  private static String SORT_ORDER;
 
  private ContentResolver contentResolver;
 
  private Context context;
 
  private static final String[] PRE_HONEYCOMB_PROJECTION = {
    ContactMethods._ID,    // 0
    ContactMethods.NAME,   // 1
    ContactMethods.DATA,   // 2
  };
 
  private static final String[] POST_HONEYCOMB_PROJECTION = HoneycombMR1Util.getEmailAdapterProjection();
 
  public EmailAddressAdapter(Context context) {
    super(context, android.R.layout.simple_dropdown_item_1line, null);
    contentResolver = context.getContentResolver();
    this.context = context;
    if (SdkLevel.getLevel() >= SdkLevel.LEVEL_HONEYCOMB_MR1) {
      SORT_ORDER = HoneycombMR1Util.getTimesContacted() + " DESC, " + HoneycombMR1Util.getDisplayName();
    } else {
      SORT_ORDER = People.TIMES_CONTACTED + " DESC, " + People.NAME;
    }
  }
 
  @Override
  public final String convertToString(Cursor cursor) {
 
    int POST_HONEYCOMB_NAME_INDEX = cursor.getColumnIndex(HoneycombMR1Util.getDisplayName());
    int POST_HONEYCOMB_EMAIL_INDEX = cursor.getColumnIndex(HoneycombMR1Util.getEmailAddress());
    String name = "";
    String address = "";
 
    if (SdkLevel.getLevel() >= SdkLevel.LEVEL_HONEYCOMB_MR1) {
      name = cursor.getString(POST_HONEYCOMB_NAME_INDEX);
      address = cursor.getString(POST_HONEYCOMB_EMAIL_INDEX);
    } else {
      name = cursor.getString(PRE_HONEYCOMB_NAME_INDEX);
      address = cursor.getString(PRE_HONEYCOMB_DATA_INDEX);
    }
 
    return new Rfc822Token(name, address, null).toString();
  }
 
  private final String makeDisplayString(Cursor cursor) {
 
    int POST_HONEYCOMB_NAME_INDEX = cursor.getColumnIndex(HoneycombMR1Util.getDisplayName());
    int POST_HONEYCOMB_EMAIL_INDEX = cursor.getColumnIndex(HoneycombMR1Util.getEmailAddress());
    StringBuilder s = new StringBuilder();
    boolean flag = false;
    String name = "";
    String address = "";
 
    if (SdkLevel.getLevel() >= SdkLevel.LEVEL_HONEYCOMB_MR1) {
      name = cursor.getString(POST_HONEYCOMB_NAME_INDEX);
      address = cursor.getString(POST_HONEYCOMB_EMAIL_INDEX);
    } else {
      name = cursor.getString(PRE_HONEYCOMB_NAME_INDEX);
      address = cursor.getString(PRE_HONEYCOMB_DATA_INDEX);
    }
 
    if (!TextUtils.isEmpty(name)) {
      s.append(name);
      flag = true;
    }
 
    if (flag) {
      s.append(" <");
    }
 
    s.append(address);
 
    if (flag) {
      s.append(">");
    }
 
    return s.toString();
  }
 
  @Override
  public final void bindView(View view, Context context, Cursor cursor) {
    ((TextView) view).setText(makeDisplayString(cursor));
  }
 
  @Override
  public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
 
    String where = null;
    android.net.Uri db = null;
    StringBuilder s = new StringBuilder();
 
    if (constraint != null) {
      String filter = DatabaseUtils.sqlEscapeString(constraint.toString() + '%');
 
      if (SdkLevel.getLevel() >= SdkLevel.LEVEL_HONEYCOMB_MR1) {
        db = HoneycombMR1Util.getDataContentUri();
        s.append("(" + HoneycombMR1Util.getDataMimeType() + "='" + HoneycombMR1Util.getEmailType() + "')");
        s.append(" AND ");
        s.append("(display_name LIKE ");
        s.append(filter);
        s.append(")");
      } else {
        db = ContactMethods.CONTENT_EMAIL_URI;
        s.append("(name LIKE ");
        s.append(filter);
        s.append(") OR (display_name LIKE ");
        s.append(filter);
        s.append(")");
      }
    }
    where = s.toString();
 
    // Note(hal): This lists the column names in the table being accessed, since they aren't
    // obvious to me from the documentation
    if (DEBUG) {
      Cursor c = context.getContentResolver().query(db, null, null, null, null, null);
      Log.d(TAG, "listing columns");
      for (int i = 0; i<c.getColumnCount(); i++) {
        Log.d(TAG, "column " + i + "=" + c.getColumnName(i));
      }
    }
 
    if (SdkLevel.getLevel() >= SdkLevel.LEVEL_HONEYCOMB_MR1) {
      return contentResolver.query(db, POST_HONEYCOMB_PROJECTION,
          where, null, SORT_ORDER);
    } else {
      return contentResolver.query(db, PRE_HONEYCOMB_PROJECTION,
          where, null, SORT_ORDER);
    }
  }
}