34386e6988
First pass at automatically adding new words that the user types and deliberately accepts. After typing the word 4 times, the word gets promoted to being valid. After typing the word 7 times, the word gets added into the UserDictionary and can be removed from the UserDictionary Settings UI. Also add a second row of symbols to the period popup.
126 lines
4.2 KiB
Java
126 lines
4.2 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.ContentObserver;
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import android.database.Cursor;
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import android.provider.UserDictionary.Words;
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public class UserDictionary extends ExpandableDictionary {
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private static final String[] PROJECTION = {
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Words._ID,
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Words.WORD,
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Words.FREQUENCY
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};
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private static final int INDEX_WORD = 1;
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private static final int INDEX_FREQUENCY = 2;
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private ContentObserver mObserver;
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private boolean mRequiresReload;
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public UserDictionary(Context context) {
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super(context);
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// Perform a managed query. The Activity will handle closing and requerying the cursor
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// when needed.
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ContentResolver cres = context.getContentResolver();
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cres.registerContentObserver(Words.CONTENT_URI, true, mObserver = new ContentObserver(null) {
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@Override
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public void onChange(boolean self) {
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mRequiresReload = true;
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}
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});
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loadDictionary();
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}
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public synchronized void close() {
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if (mObserver != null) {
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getContext().getContentResolver().unregisterContentObserver(mObserver);
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mObserver = null;
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}
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}
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private synchronized void loadDictionary() {
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Cursor cursor = getContext().getContentResolver()
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.query(Words.CONTENT_URI, PROJECTION, "(locale IS NULL) or (locale=?)",
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new String[] { Locale.getDefault().toString() }, null);
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addWords(cursor);
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mRequiresReload = false;
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}
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/**
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* Adds a word to the dictionary and makes it persistent.
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* @param word the word to add. If the word is capitalized, then the dictionary will
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* recognize it as a capitalized word when searched.
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* @param frequency the frequency of occurrence of the word. A frequency of 255 is considered
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* the highest.
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* @TODO use a higher or float range for frequency
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*/
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@Override
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public synchronized void addWord(String word, int frequency) {
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if (mRequiresReload) loadDictionary();
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// Safeguard against adding long words. Can cause stack overflow.
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if (word.length() >= getMaxWordLength()) return;
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super.addWord(word, frequency);
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Words.addWord(getContext(), word, frequency, Words.LOCALE_TYPE_CURRENT);
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// In case the above does a synchronous callback of the change observer
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mRequiresReload = false;
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}
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@Override
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public synchronized void getWords(final WordComposer codes, final WordCallback callback) {
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if (mRequiresReload) loadDictionary();
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super.getWords(codes, callback);
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}
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@Override
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public synchronized boolean isValidWord(CharSequence word) {
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if (mRequiresReload) loadDictionary();
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return super.isValidWord(word);
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}
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private void addWords(Cursor cursor) {
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clearDictionary();
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final int maxWordLength = getMaxWordLength();
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if (cursor.moveToFirst()) {
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while (!cursor.isAfterLast()) {
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String word = cursor.getString(INDEX_WORD);
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int frequency = cursor.getInt(INDEX_FREQUENCY);
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// Safeguard against adding really long words. Stack may overflow due
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// to recursion
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if (word.length() < maxWordLength) {
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super.addWord(word, frequency);
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}
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cursor.moveToNext();
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}
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}
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cursor.close();
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}
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}
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