Rename to Kelar Keyboard (org.kelar.inputmethod.latin)

1 files changed, 108 insertions, 0 deletions

diff --git a/java/src/org/kelar/inputmethod/latin/personalization/PersonalizationHelper.java b/java/src/org/kelar/inputmethod/latin/personalization/PersonalizationHelper.java
new file mode 100644
index 000000000..7be7d1c8f
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/personalization/PersonalizationHelper.java
@@ -0,0 +1,108 @@
+/*
+ * 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 org.kelar.inputmethod.latin.personalization;
+
+import android.content.Context;
+import android.util.Log;
+
+import org.kelar.inputmethod.latin.common.FileUtils;
+
+import java.io.File;
+import java.io.FilenameFilter;
+import java.lang.ref.SoftReference;
+import java.util.Locale;
+import java.util.concurrent.ConcurrentHashMap;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+/**
+ * Helps handle and manage personalized dictionaries such as {@link UserHistoryDictionary}.
+ */
+public class PersonalizationHelper {
+    private static final String TAG = PersonalizationHelper.class.getSimpleName();
+    private static final boolean DEBUG = false;
+
+    private static final ConcurrentHashMap<String, SoftReference<UserHistoryDictionary>>
+            sLangUserHistoryDictCache = new ConcurrentHashMap<>();
+
+    @Nonnull
+    public static UserHistoryDictionary getUserHistoryDictionary(
+            final Context context, final Locale locale, @Nullable final String accountName) {
+        String lookupStr = locale.toString();
+        if (accountName != null) {
+            lookupStr += "." + accountName;
+        }
+        synchronized (sLangUserHistoryDictCache) {
+            if (sLangUserHistoryDictCache.containsKey(lookupStr)) {
+                final SoftReference<UserHistoryDictionary> ref =
+                        sLangUserHistoryDictCache.get(lookupStr);
+                final UserHistoryDictionary dict = ref == null ? null : ref.get();
+                if (dict != null) {
+                    if (DEBUG) {
+                        Log.d(TAG, "Use cached UserHistoryDictionary with lookup: " + lookupStr);
+                    }
+                    dict.reloadDictionaryIfRequired();
+                    return dict;
+                }
+            }
+            final UserHistoryDictionary dict = new UserHistoryDictionary(
+                    context, locale, accountName);
+            sLangUserHistoryDictCache.put(lookupStr, new SoftReference<>(dict));
+            return dict;
+        }
+    }
+
+    public static void removeAllUserHistoryDictionaries(final Context context) {
+        synchronized (sLangUserHistoryDictCache) {
+            for (final ConcurrentHashMap.Entry<String, SoftReference<UserHistoryDictionary>> entry
+                    : sLangUserHistoryDictCache.entrySet()) {
+                if (entry.getValue() != null) {
+                    final UserHistoryDictionary dict = entry.getValue().get();
+                    if (dict != null) {
+                        dict.clear();
+                    }
+                }
+            }
+            sLangUserHistoryDictCache.clear();
+            final File filesDir = context.getFilesDir();
+            if (filesDir == null) {
+                Log.e(TAG, "context.getFilesDir() returned null.");
+                return;
+            }
+            final boolean filesDeleted = FileUtils.deleteFilteredFiles(
+                    filesDir, new DictFilter(UserHistoryDictionary.NAME));
+            if (!filesDeleted) {
+                Log.e(TAG, "Cannot remove dictionary files. filesDir: " + filesDir.getAbsolutePath()
+                        + ", dictNamePrefix: " + UserHistoryDictionary.NAME);
+            }
+        }
+    }
+
+    private static class DictFilter implements FilenameFilter {
+        private final String mName;
+
+        DictFilter(final String name) {
+            mName = name;
+        }
+
+        @Override
+        public boolean accept(final File dir, final String name) {
+            return name.startsWith(mName);
+        }
+    }
+}