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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.dialer.dialpad;
import static com.android.dialer.dialpad.SmartDialAdapter.LOG_TAG;
import android.os.AsyncTask;
import android.provider.ContactsContract;
import android.provider.ContactsContract.Contacts;
import android.telephony.PhoneNumberUtils;
import android.util.Log;
import com.android.contacts.common.preference.ContactsPreferences;
import com.android.contacts.common.util.StopWatch;
import com.android.dialer.dialpad.SmartDialCache.Contact;
import com.google.common.collect.Lists;
import java.util.ArrayList;
import java.util.List;
/**
* This task searches through the provided cache to return the top 3 contacts(ranked by confidence)
* that match the query, then passes it back to the {@link SmartDialLoaderCallback} through a
* callback function.
*/
public class SmartDialLoaderTask extends AsyncTask<String, Integer, List<SmartDialEntry>> {
public interface SmartDialLoaderCallback {
void setSmartDialAdapterEntries(List<SmartDialEntry> list);
}
static private final boolean DEBUG = true; // STOPSHIP change to false.
private static final int MAX_ENTRIES = 3;
private final SmartDialCache mContactsCache;
private final SmartDialLoaderCallback mCallback;
/**
* See {@link ContactsPreferences#getDisplayOrder()}.
* {@link ContactsContract.Preferences#DISPLAY_ORDER_PRIMARY} (first name first)
* {@link ContactsContract.Preferences#DISPLAY_ORDER_ALTERNATIVE} (last name first)
*/
private final SmartDialNameMatcher mNameMatcher;
public SmartDialLoaderTask(SmartDialLoaderCallback callback, String query,
SmartDialCache cache) {
this.mCallback = callback;
this.mNameMatcher = new SmartDialNameMatcher(PhoneNumberUtils.normalizeNumber(query));
this.mContactsCache = cache;
}
@Override
protected List<SmartDialEntry> doInBackground(String... params) {
return getContactMatches();
}
@Override
protected void onPostExecute(List<SmartDialEntry> result) {
if (mCallback != null) {
mCallback.setSmartDialAdapterEntries(result);
}
}
/**
* Loads all visible contacts with phone numbers and check if their display names match the
* query. Return at most {@link #MAX_ENTRIES} {@link SmartDialEntry}'s for the matching
* contacts.
*/
private ArrayList<SmartDialEntry> getContactMatches() {
final List<Contact> cachedContactList = mContactsCache.getContacts();
// cachedContactList will never be null at this point
if (DEBUG) {
Log.d(LOG_TAG, "Size of cache: " + cachedContactList.size());
}
final StopWatch stopWatch = DEBUG ? StopWatch.start(LOG_TAG + " Start Match") : null;
final ArrayList<SmartDialEntry> outList = Lists.newArrayList();
int count = 0;
for (int i = 0; i < cachedContactList.size(); i++) {
final Contact contact = cachedContactList.get(i);
final String displayName = contact.displayName;
if (!mNameMatcher.matches(displayName)) {
continue;
}
// Matched; create SmartDialEntry.
@SuppressWarnings("unchecked")
final SmartDialEntry entry = new SmartDialEntry(
contact.displayName,
Contacts.getLookupUri(contact.id, contact.lookupKey),
(ArrayList<SmartDialMatchPosition>) mNameMatcher.getMatchPositions().clone()
);
outList.add(entry);
count++;
if (count >= MAX_ENTRIES) {
break;
}
}
if (DEBUG) {
stopWatch.stopAndLog(LOG_TAG + " Match Complete", 0);
}
return outList;
}
}
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