1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tools.layoutlib.create; 18 19 20 /** 21 * An adapter to make it easier to use {@link MethodListener}. 22 * <p/> 23 * The adapter calls the void {@link #onInvokeV(String, boolean, Object)} listener 24 * for all types (I, L, F, D and A), returning 0 or null as appropriate. 25 */ 26 public class MethodAdapter implements MethodListener { 27 /** 28 * A stub method is being invoked. 29 * <p/> 30 * Known limitation: caller arguments are not available. 31 * 32 * @param signature The signature of the method being invoked, composed of the 33 * binary class name followed by the method descriptor (aka argument 34 * types). Example: "com/foo/MyClass/InnerClass/printInt(I)V". 35 * @param isNative True if the method was a native method. 36 * @param caller The calling object. Null for static methods, "this" for instance methods. 37 */ onInvokeV(String signature, boolean isNative, Object caller)38 public void onInvokeV(String signature, boolean isNative, Object caller) { 39 } 40 41 /** 42 * Same as {@link #onInvokeV(String, boolean, Object)} but returns an integer or similar. 43 * @see #onInvokeV(String, boolean, Object) 44 * @return an integer, or a boolean, or a short or a byte. 45 */ onInvokeI(String signature, boolean isNative, Object caller)46 public int onInvokeI(String signature, boolean isNative, Object caller) { 47 onInvokeV(signature, isNative, caller); 48 return 0; 49 } 50 51 /** 52 * Same as {@link #onInvokeV(String, boolean, Object)} but returns a long. 53 * @see #onInvokeV(String, boolean, Object) 54 * @return a long. 55 */ onInvokeL(String signature, boolean isNative, Object caller)56 public long onInvokeL(String signature, boolean isNative, Object caller) { 57 onInvokeV(signature, isNative, caller); 58 return 0; 59 } 60 61 /** 62 * Same as {@link #onInvokeV(String, boolean, Object)} but returns a float. 63 * @see #onInvokeV(String, boolean, Object) 64 * @return a float. 65 */ onInvokeF(String signature, boolean isNative, Object caller)66 public float onInvokeF(String signature, boolean isNative, Object caller) { 67 onInvokeV(signature, isNative, caller); 68 return 0; 69 } 70 71 /** 72 * Same as {@link #onInvokeV(String, boolean, Object)} but returns a double. 73 * @see #onInvokeV(String, boolean, Object) 74 * @return a double. 75 */ onInvokeD(String signature, boolean isNative, Object caller)76 public double onInvokeD(String signature, boolean isNative, Object caller) { 77 onInvokeV(signature, isNative, caller); 78 return 0; 79 } 80 81 /** 82 * Same as {@link #onInvokeV(String, boolean, Object)} but returns an object. 83 * @see #onInvokeV(String, boolean, Object) 84 * @return an object. 85 */ onInvokeA(String signature, boolean isNative, Object caller)86 public Object onInvokeA(String signature, boolean isNative, Object caller) { 87 onInvokeV(signature, isNative, caller); 88 return null; 89 } 90 } 91 92