1 files changed, 52 insertions, 0 deletions
diff --git a/ui/window/MultiWindowPlayground/kotlinApp/Application/src/main/java/com/android/multiwindowplayground/logger/LogWrapper.kt b/ui/window/MultiWindowPlayground/kotlinApp/Application/src/main/java/com/android/multiwindowplayground/logger/LogWrapper.kt
new file mode 100755
index 00000000..046b743d
--- /dev/null
+++ b/ui/window/MultiWindowPlayground/kotlinApp/Application/src/main/java/com/android/multiwindowplayground/logger/LogWrapper.kt
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 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.multiwindowplayground.logger
+
+import android.util.Log
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface.  This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+class LogWrapper : LogNode {
+
+    // For piping:  The next node to receive Log data after this one has done its work.
+    internal var next: LogNode? = null
+
+    /**
+     * Prints data out to the console using Android's native log mechanism.
+     *
+     * @param priority Log level of the data being logged. Verbose, Error, etc.
+     * @param tag      Tag for for the log data.  Can be used to organize log statements.
+     * @param msg      The actual message to be logged. The actual message to be logged.
+     * @param tr       If an exception was thrown, this can be sent along for the logging
+     *                 facilities to extract and print useful information.
+     */
+    override fun println(priority: Int, tag: String?, msg: String, tr: Throwable?) {
+
+        // If an exception was provided, convert that exception to a usable string and attach
+        // it to the end of the msg method.
+        if (tr != null) msg.plus("\n${Log.getStackTraceString(tr)}")
+
+        // This is functionally identical to Log.x(tag, useMsg);
+        // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+        Log.println(priority, tag, msg)
+
+        // If this isn't the last node in the chain, move things along.
+        next?.println(priority, tag, msg, tr)
+    }
+}