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/*
* Copyright (c) 2013 Menny Even-Danan
*
* 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.anysoftkeyboard.dictionaries.sqlite;
import android.content.Context;
import com.anysoftkeyboard.AnySoftKeyboard;
import com.anysoftkeyboard.base.dictionaries.WordComposer;
import com.anysoftkeyboard.utils.Log;
import com.menny.android.anysoftkeyboard.AnyApplication;
/**
* Stores new words temporarily until they are promoted to the user dictionary
* for longevity. Words in the auto dictionary are used to determine if it's ok
* to accept a word that's not in the main or user dictionary. Using a new word
* repeatedly will promote it to the user dictionary.
*/
public class AutoDictionary extends SQLiteUserDictionaryBase {
protected static final String TAG = "ASK ADict";
public static enum AdditionType {
Picked,
Typed
}
// Weight added to a user picking a new word from the suggestion strip
private static final int FREQUENCY_FOR_PICKED = 3;
// Weight added to a user typing a new word that doesn't get corrected (or
// is reverted)
private static final int FREQUENCY_FOR_TYPED = 1;
// A word that is frequently typed and gets promoted to the user dictionary,
// uses this
// frequency.
private static final int AUTO_ADDED_WORDS_FREQUENCY = 178;
/**
* Sort by descending order of frequency.
*/
public static final String DEFAULT_SORT_ORDER = WordsSQLiteConnection.Words.FREQUENCY + " DESC";
public AutoDictionary(Context context, String locale) {
super("Auto", context, locale);
}
@Override
protected WordsSQLiteConnection createStorage(String locale) {
/*I've renamed the db filename, since the previous one was in an incompatible format*/
return new WordsSQLiteConnection(mContext, "auto_dict_2.db", locale);
}
@Override
public boolean isValidWord(CharSequence word) {
return false;//words in the auto-dictionary are always invalid
}
/**
* Adds the word to the auto-dictionary, if it was used enough times, it will be promoted to the user's dictionary
* @param word the word to remember
* @param type what type of addition was it
* @return true if the word was promoted to user's dictionary.
*/
public boolean addWord(WordComposer word, AdditionType type, AnySoftKeyboard callingIme) {
synchronized (mResourceMonitor) {
if (isClosed()) {
Log.d(TAG, "Dictionary (type "+this.getClass().getName()+") "+this.getDictionaryName()+" is closed! Can not add word.");
return false;
}
final int length = word.length();
// Don't add very short or very long words.
if (length < 2 || length > MAX_WORD_LENGTH)
return false;
//ask can not be null! This should not happen (since the caller is ASK instance...)
String wordToAdd = word.getTypedWord().toString();
if (callingIme.getCurrentWord().isAutoCapitalized()) {
// Remove caps before adding
wordToAdd = Character.toLowerCase(wordToAdd.charAt(0)) + wordToAdd.substring(1);
}
int freq = getWordFrequency(wordToAdd);
final int frequencyDelta = type.equals(AdditionType.Picked)? FREQUENCY_FOR_PICKED: FREQUENCY_FOR_TYPED;
freq = freq < 0 ? frequencyDelta : freq + frequencyDelta;
boolean added;
if (freq >= AnyApplication.getConfig().getAutoDictionaryInsertionThreshold()) {
Log.i(TAG, "Promoting the word " + word + " (freq " + freq
+ ") to the user dictionary. It earned it.");
added = callingIme.promoteToUserDictionary(wordToAdd, AUTO_ADDED_WORDS_FREQUENCY);
deleteWord(wordToAdd);
} else {
super.addWord(wordToAdd, freq);
added = false;//this means that the word was not promoted.
}
return added;
}
}
@Override
public boolean addWord(String word, int frequency) {
throw new RuntimeException("You should not call addWord(String, int) in AutoDictionary! Please call addWord(WordComposer, AdditionType)");
}
}
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