Make DynamicPred...Base extend ExpandableBinaryDictionary.

Bug: 6669677
Change-Id: I06afad35d3eb73510c34d10cd4116f5bcf934f7c

1 files changed, 122 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java b/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java
new file mode 100644
index 000000000..c8deaf90d
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2013 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.inputmethod.latin.personalization;
+
+import com.android.inputmethod.latin.utils.CollectionUtils;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+import java.lang.ref.SoftReference;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class PersonalizationHelper {
+    private static final String TAG = PersonalizationHelper.class.getSimpleName();
+    private static final boolean DEBUG = false;
+
+    private static final ConcurrentHashMap<String, SoftReference<UserHistoryPredictionDictionary>>
+            sLangUserHistoryDictCache = CollectionUtils.newConcurrentHashMap();
+
+    private static final ConcurrentHashMap<String, SoftReference<PersonalizationDictionary>>
+            sLangPersonalizationDictCache = CollectionUtils.newConcurrentHashMap();
+
+    private static final ConcurrentHashMap<String,
+            SoftReference<PersonalizationPredictionDictionary>>
+                    sLangPersonalizationPredictionDictCache =
+                            CollectionUtils.newConcurrentHashMap();
+
+    public static UserHistoryPredictionDictionary getUserHistoryPredictionDictionary(
+            final Context context, final String locale, final SharedPreferences sp) {
+        synchronized (sLangUserHistoryDictCache) {
+            if (sLangUserHistoryDictCache.containsKey(locale)) {
+                final SoftReference<UserHistoryPredictionDictionary> ref =
+                        sLangUserHistoryDictCache.get(locale);
+                final UserHistoryPredictionDictionary dict = ref == null ? null : ref.get();
+                if (dict != null) {
+                    if (DEBUG) {
+                        Log.w(TAG, "Use cached UserHistoryPredictionDictionary for " + locale);
+                    }
+                    dict.asyncReloadDictionaryIfRequired();
+                    return dict;
+                }
+            }
+            final UserHistoryPredictionDictionary dict =
+                    new UserHistoryPredictionDictionary(context, locale, sp);
+            sLangUserHistoryDictCache.put(
+                    locale, new SoftReference<UserHistoryPredictionDictionary>(dict));
+            return dict;
+        }
+    }
+
+    public static void registerPersonalizationDictionaryUpdateSession(final Context context,
+            final PersonalizationDictionaryUpdateSession session, String locale) {
+        final PersonalizationPredictionDictionary predictionDictionary =
+                getPersonalizationPredictionDictionary(context, locale,
+                        PreferenceManager.getDefaultSharedPreferences(context));
+        predictionDictionary.registerUpdateSession(session);
+        final PersonalizationDictionary dictionary =
+                getPersonalizationDictionary(context, locale,
+                        PreferenceManager.getDefaultSharedPreferences(context));
+        dictionary.registerUpdateSession(session);
+    }
+
+    public static PersonalizationDictionary getPersonalizationDictionary(
+            final Context context, final String locale, final SharedPreferences sp) {
+        synchronized (sLangPersonalizationDictCache) {
+            if (sLangPersonalizationDictCache.containsKey(locale)) {
+                final SoftReference<PersonalizationDictionary> ref =
+                        sLangPersonalizationDictCache.get(locale);
+                final PersonalizationDictionary dict = ref == null ? null : ref.get();
+                if (dict != null) {
+                    if (DEBUG) {
+                        Log.w(TAG, "Use cached PersonalizationDictCache for " + locale);
+                    }
+                    return dict;
+                }
+            }
+            final PersonalizationDictionary dict =
+                    new PersonalizationDictionary(context, locale, sp);
+            sLangPersonalizationDictCache.put(
+                    locale, new SoftReference<PersonalizationDictionary>(dict));
+            return dict;
+        }
+    }
+
+    public static PersonalizationPredictionDictionary getPersonalizationPredictionDictionary(
+            final Context context, final String locale, final SharedPreferences sp) {
+        synchronized (sLangPersonalizationPredictionDictCache) {
+            if (sLangPersonalizationPredictionDictCache.containsKey(locale)) {
+                final SoftReference<PersonalizationPredictionDictionary> ref =
+                        sLangPersonalizationPredictionDictCache.get(locale);
+                final PersonalizationPredictionDictionary dict = ref == null ? null : ref.get();
+                if (dict != null) {
+                    if (DEBUG) {
+                        Log.w(TAG, "Use cached PersonalizationPredictionDictionary for " + locale);
+                    }
+                    return dict;
+                }
+            }
+            final PersonalizationPredictionDictionary dict =
+                    new PersonalizationPredictionDictionary(context, locale, sp);
+            sLangPersonalizationPredictionDictCache.put(
+                    locale, new SoftReference<PersonalizationPredictionDictionary>(dict));
+            return dict;
+        }
+    }
+}