1 files changed, 96 insertions, 0 deletions
diff --git a/src/com/android/dialer/calllog/calllogcache/CallLogCache.java b/src/com/android/dialer/calllog/calllogcache/CallLogCache.java
new file mode 100644
index 000000000..e64c0121d
--- /dev/null
+++ b/src/com/android/dialer/calllog/calllogcache/CallLogCache.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2015 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.dialer.calllog.calllogcache;
+
+import android.content.Context;
+import android.telecom.PhoneAccountHandle;
+
+import com.android.contacts.common.CallUtil;
+import com.android.contacts.common.compat.CompatUtils;
+import com.android.dialer.calllog.CallLogAdapter;
+
+/**
+ * This is the base class for the CallLogCaches.
+ *
+ * Keeps a cache of recently made queries to the Telecom/Telephony processes. The aim of this cache
+ * is to reduce the number of cross-process requests to TelecomManager, which can negatively affect
+ * performance.
+ *
+ * This is designed with the specific use case of the {@link CallLogAdapter} in mind.
+ */
+public abstract class CallLogCache {
+    // TODO: Dialer should be fixed so as not to check isVoicemail() so often but at the time of
+    // this writing, that was a much larger undertaking than creating this cache.
+
+    protected final Context mContext;
+
+    private boolean mHasCheckedForVideoEnabled;
+    private boolean mIsVideoEnabled;
+
+    public CallLogCache(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Return the most compatible version of the TelecomCallLogCache.
+     */
+    public static CallLogCache getCallLogCache(Context context) {
+        if (CompatUtils.isMSIMCompatible()) {
+            return new CallLogCacheLollipopMr1(context);
+        }
+        return new CallLogCacheLollipop(context);
+    }
+
+    public void reset() {
+        mHasCheckedForVideoEnabled = false;
+        mIsVideoEnabled = false;
+    }
+
+    /**
+     * Returns true if the given number is the number of the configured voicemail. To be able to
+     * mock-out this, it is not a static method.
+     */
+    public abstract boolean isVoicemailNumber(PhoneAccountHandle accountHandle,
+            CharSequence number);
+
+    public boolean isVideoEnabled() {
+        if (!mHasCheckedForVideoEnabled) {
+            mIsVideoEnabled = CallUtil.isVideoEnabled(mContext);
+            mHasCheckedForVideoEnabled = true;
+        }
+        return mIsVideoEnabled;
+    }
+
+    /**
+     * Extract account label from PhoneAccount object.
+     */
+    public abstract String getAccountLabel(PhoneAccountHandle accountHandle);
+
+    /**
+     * Extract account color from PhoneAccount object.
+     */
+    public abstract int getAccountColor(PhoneAccountHandle accountHandle);
+
+    /**
+     * Determines if the PhoneAccount supports specifying a call subject (i.e. calling with a note)
+     * for outgoing calls.
+     *
+     * @param accountHandle The PhoneAccount handle.
+     * @return {@code true} if calling with a note is supported, {@code false} otherwise.
+     */
+    public abstract boolean doesAccountSupportCallSubject(PhoneAccountHandle accountHandle);
+}