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

1 files changed, 106 insertions, 0 deletions

diff --git a/java/src/org/kelar/inputmethod/latin/DictionaryFacilitatorLruCache.java b/java/src/org/kelar/inputmethod/latin/DictionaryFacilitatorLruCache.java
new file mode 100644
index 000000000..b20fad30c
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/DictionaryFacilitatorLruCache.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2014 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;
+
+import java.util.Locale;
+import java.util.concurrent.TimeUnit;
+
+import android.content.Context;
+import android.util.Log;
+
+/**
+ * Cache for dictionary facilitators of multiple locales.
+ * This class automatically creates and releases up to 3 facilitator instances using LRU policy.
+ */
+public class DictionaryFacilitatorLruCache {
+    private static final String TAG = "DictionaryFacilitatorLruCache";
+    private static final int WAIT_FOR_LOADING_MAIN_DICT_IN_MILLISECONDS = 1000;
+    private static final int MAX_RETRY_COUNT_FOR_WAITING_FOR_LOADING_DICT = 5;
+
+    private final Context mContext;
+    private final String mDictionaryNamePrefix;
+    private final Object mLock = new Object();
+    private final DictionaryFacilitator mDictionaryFacilitator;
+    private boolean mUseContactsDictionary;
+    private Locale mLocale;
+
+    public DictionaryFacilitatorLruCache(final Context context, final String dictionaryNamePrefix) {
+        mContext = context;
+        mDictionaryNamePrefix = dictionaryNamePrefix;
+        mDictionaryFacilitator = DictionaryFacilitatorProvider.getDictionaryFacilitator(
+                true /* isNeededForSpellChecking */);
+    }
+
+    private static void waitForLoadingMainDictionary(
+            final DictionaryFacilitator dictionaryFacilitator) {
+        for (int i = 0; i < MAX_RETRY_COUNT_FOR_WAITING_FOR_LOADING_DICT; i++) {
+            try {
+                dictionaryFacilitator.waitForLoadingMainDictionaries(
+                        WAIT_FOR_LOADING_MAIN_DICT_IN_MILLISECONDS, TimeUnit.MILLISECONDS);
+                return;
+            } catch (final InterruptedException e) {
+                Log.i(TAG, "Interrupted during waiting for loading main dictionary.", e);
+                if (i < MAX_RETRY_COUNT_FOR_WAITING_FOR_LOADING_DICT - 1) {
+                    Log.i(TAG, "Retry", e);
+                } else {
+                    Log.w(TAG, "Give up retrying. Retried "
+                            + MAX_RETRY_COUNT_FOR_WAITING_FOR_LOADING_DICT + " times.", e);
+                }
+            }
+        }
+    }
+
+    private void resetDictionariesForLocaleLocked() {
+        // Nothing to do if the locale is null.  This would be the case before any get() calls.
+        if (mLocale != null) {
+          // Note: Given that personalized dictionaries are not used here; we can pass null account.
+          mDictionaryFacilitator.resetDictionaries(mContext, mLocale,
+              mUseContactsDictionary, false /* usePersonalizedDicts */,
+              false /* forceReloadMainDictionary */, null /* account */,
+              mDictionaryNamePrefix, null /* listener */);
+        }
+    }
+
+    public void setUseContactsDictionary(final boolean useContactsDictionary) {
+        synchronized (mLock) {
+            if (mUseContactsDictionary == useContactsDictionary) {
+                // The value has not been changed.
+                return;
+            }
+            mUseContactsDictionary = useContactsDictionary;
+            resetDictionariesForLocaleLocked();
+            waitForLoadingMainDictionary(mDictionaryFacilitator);
+        }
+    }
+
+    public DictionaryFacilitator get(final Locale locale) {
+        synchronized (mLock) {
+            if (!mDictionaryFacilitator.isForLocale(locale)) {
+                mLocale = locale;
+                resetDictionariesForLocaleLocked();
+            }
+            waitForLoadingMainDictionary(mDictionaryFacilitator);
+            return mDictionaryFacilitator;
+        }
+    }
+
+    public void closeDictionaries() {
+        synchronized (mLock) {
+            mDictionaryFacilitator.closeDictionaries();
+        }
+    }
+}