| /* |
| * Copyright (C) 2012 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.common.utils; |
| |
| import com.android.common.annotations.NonNull; |
| |
| /** |
| * Interface used to display warnings/errors while parsing the SDK content. |
| * <p/> |
| * There are a few default implementations available: |
| * <ul> |
| * <li> {@link NullLogger} is an implementation that does <em>nothing</em> with the log. |
| * Useful for limited cases where you need to call a class that requires a non-null logging |
| * yet the calling code does not have any mean of reporting logs itself. It can be |
| * acceptable for use as a temporary implementation but most of the time that means the caller |
| * code needs to be reworked to take a logger object from its own caller. |
| * </li> |
| * <li> {@link StdLogger} is an implementation that dumps the log to {@link System#out} or |
| * {@link System#err}. This is useful for unit tests or code that does not have any GUI. |
| * GUI based apps based should not use it and should provide a better way to report to the user. |
| * </li> |
| * </ul> |
| */ |
| public interface ILogger { |
| |
| /** |
| * Prints an error message. |
| * |
| * @param t is an optional {@link Throwable} or {@link Exception}. If non-null, its |
| * message will be printed out. |
| * @param msgFormat is an optional error format. If non-null, it will be printed |
| * using a {@link java.util.Formatter} with the provided arguments. |
| * @param args provides the arguments for errorFormat. |
| */ |
| void error(Throwable t, String msgFormat, Object... args); |
| |
| /** |
| * Prints a warning message. |
| * |
| * @param msgFormat is a string format to be used with a {@link java.util.Formatter}. Cannot be null. |
| * @param args provides the arguments for warningFormat. |
| */ |
| void warning(@NonNull String msgFormat, Object... args); |
| |
| /** |
| * Prints an information message. |
| * |
| * @param msgFormat is a string format to be used with a {@link java.util.Formatter}. Cannot be null. |
| * @param args provides the arguments for msgFormat. |
| */ |
| void info(@NonNull String msgFormat, Object... args); |
| |
| /** |
| * Prints a verbose message. |
| * |
| * @param msgFormat is a string format to be used with a {@link java.util.Formatter}. Cannot be null. |
| * @param args provides the arguments for msgFormat. |
| */ |
| void verbose(@NonNull String msgFormat, Object... args); |
| |
| } |