PropertyValuesHolder_Delegate.java revision 29ed07524ce0fc2e5950f5340d306247145d0efa
1282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski/* 2282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Copyright (C) 2010 The Android Open Source Project 3282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 4282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Licensed under the Apache License, Version 2.0 (the "License"); 5282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * you may not use this file except in compliance with the License. 6282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * You may obtain a copy of the License at 7282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 8282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * http://www.apache.org/licenses/LICENSE-2.0 9282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 10282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Unless required by applicable law or agreed to in writing, software 11282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * distributed under the License is distributed on an "AS IS" BASIS, 12282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * See the License for the specific language governing permissions and 14282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * limitations under the License. 15282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski */ 16282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 17282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskipackage android.animation; 18282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 1929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezimport com.android.layoutlib.bridge.Bridge; 20282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.layoutlib.bridge.impl.DelegateManager; 21282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.tools.layoutlib.annotations.LayoutlibDelegate; 22282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 2329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezimport java.lang.reflect.InvocationTargetException; 2429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezimport java.lang.reflect.Method; 2529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezimport java.util.Arrays; 2629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezimport java.util.HashMap; 2729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezimport java.util.Map; 2829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 29282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski/** 30282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Delegate implementing the native methods of android.animation.PropertyValuesHolder 31282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 32282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Through the layoutlib_create tool, the original native methods of PropertyValuesHolder have been 33282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * replaced by calls to methods of the same name in this delegate class. 34282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 35282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager} 36282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * around to map int to instance of the delegate. 37282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 38282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * The main goal of this class' methods are to provide a native way to access setters and getters 3929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez * on some object. We override these methods to use reflection since the original reflection 4029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez * implementation of the PropertyValuesHolder won't be able to access protected methods. 41282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * 42282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski */ 4329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez/*package*/ 4429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez@SuppressWarnings("unused") 4529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perezclass PropertyValuesHolder_Delegate { 4629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // This code is copied from android.animation.PropertyValuesHolder and must be kept in sync 4729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // We try several different types when searching for appropriate setter/getter functions. 4829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // The caller may have supplied values in a type that does not match the setter/getter 4929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // functions (such as the integers 0 and 1 to represent floating point values for alpha). 5029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // Also, the use of generics in constructors means that we end up with the Object versions 5129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // of primitive types (Float vs. float). But most likely, the setter/getter functions 5229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // will take primitive types instead. 5329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // So we supply an ordered array of other types to try before giving up. 5429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static Class[] FLOAT_VARIANTS = {float.class, Float.class, double.class, int.class, 5529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Double.class, Integer.class}; 5629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static Class[] INTEGER_VARIANTS = {int.class, Integer.class, float.class, double.class, 5729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Float.class, Double.class}; 5829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 5929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static final Object sMethodIndexLock = new Object(); 6029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static final Map<Long, Method> ID_TO_METHOD = new HashMap<Long, Method>(); 6129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static final Map<String, Long> METHOD_NAME_TO_ID = new HashMap<String, Long>(); 6229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static long sNextId = 1; 6329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 6429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static long registerMethod(Class<?> targetClass, String methodName, Class[] types, 6529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez int nArgs) { 6629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // Encode the number of arguments in the method name 6729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez String methodIndexName = String.format("%1$s#%2$d", methodName, nArgs); 6829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez synchronized (sMethodIndexLock) { 6929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Long methodId = METHOD_NAME_TO_ID.get(methodIndexName); 7029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 7129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez if (methodId != null) { 7229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // The method was already registered 7329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return methodId; 7429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 7529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 7629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Class[] args = new Class[nArgs]; 7729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Method method = null; 7829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez for (Class typeVariant : types) { 7929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez for (int i = 0; i < nArgs; i++) { 8029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez args[i] = typeVariant; 8129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 8229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez try { 8329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez method = targetClass.getDeclaredMethod(methodName, args); 8429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } catch (NoSuchMethodException ignore) { 8529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 8629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 8729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 8829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez if (method != null) { 8929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez methodId = sNextId++; 9029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez ID_TO_METHOD.put(methodId, method); 9129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez METHOD_NAME_TO_ID.put(methodIndexName, methodId); 9229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 9329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return methodId; 9429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 9529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 9629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 9729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // Method not found 9829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return 0; 9929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 10029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 10129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez private static void callMethod(Object target, long methodID, Object... args) { 10229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Method method = ID_TO_METHOD.get(methodID); 10329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez assert method != null; 10429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 10529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez try { 10629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez method.setAccessible(true); 10729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez method.invoke(target, args); 10829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } catch (IllegalAccessException e) { 10929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Bridge.getLog().error(null, "Unable to update property during animation", e, null); 11029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } catch (InvocationTargetException e) { 11129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Bridge.getLog().error(null, "Unable to update property during animation", e, null); 11229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 11329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 114282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 115282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski @LayoutlibDelegate 116fbb35fb39eb74c6fa7ba6804faeaccb80483be14Ashok Bhat /*package*/ static long nGetIntMethod(Class<?> targetClass, String methodName) { 11729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return nGetMultipleIntMethod(targetClass, methodName, 1); 118282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 119282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 120282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski @LayoutlibDelegate 121fbb35fb39eb74c6fa7ba6804faeaccb80483be14Ashok Bhat /*package*/ static long nGetFloatMethod(Class<?> targetClass, String methodName) { 12229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return nGetMultipleFloatMethod(targetClass, methodName, 1); 123282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 124282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 125282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski @LayoutlibDelegate 1269be03c4e980d3058aeb3fd730da5f7d4a4a4f8a8Deepanshu Gupta /*package*/ static long nGetMultipleIntMethod(Class<?> targetClass, String methodName, 127e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta int numParams) { 12829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return registerMethod(targetClass, methodName, INTEGER_VARIANTS, numParams); 129e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 130e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 131e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 1329be03c4e980d3058aeb3fd730da5f7d4a4a4f8a8Deepanshu Gupta /*package*/ static long nGetMultipleFloatMethod(Class<?> targetClass, String methodName, 133e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta int numParams) { 13429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez return registerMethod(targetClass, methodName, FLOAT_VARIANTS, numParams); 135e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 136e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 137e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 138fbb35fb39eb74c6fa7ba6804faeaccb80483be14Ashok Bhat /*package*/ static void nCallIntMethod(Object target, long methodID, int arg) { 13929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, arg); 140282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 141282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski 142282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski @LayoutlibDelegate 143fbb35fb39eb74c6fa7ba6804faeaccb80483be14Ashok Bhat /*package*/ static void nCallFloatMethod(Object target, long methodID, float arg) { 14429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, arg); 145282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski } 146e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 147e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 148e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta /*package*/ static void nCallTwoIntMethod(Object target, long methodID, int arg1, 149e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta int arg2) { 15029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, arg1, arg2); 151e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 152e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 153e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 154e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta /*package*/ static void nCallFourIntMethod(Object target, long methodID, int arg1, 155e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta int arg2, int arg3, int arg4) { 15629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, arg1, arg2, arg3, arg4); 157e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 158e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 159e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 160e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta /*package*/ static void nCallMultipleIntMethod(Object target, long methodID, 161e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta int[] args) { 16229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez assert args != null; 16329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 16429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // Box parameters 16529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Object[] params = new Object[args.length]; 16629ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez for (int i = 0; i < args.length; i++) { 16729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez params[i] = args; 16829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 16929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, params); 170e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 171e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 172e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 173e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta /*package*/ static void nCallTwoFloatMethod(Object target, long methodID, float arg1, 174e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta float arg2) { 17529ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, arg1, arg2); 176e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 177e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 178e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 179e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta /*package*/ static void nCallFourFloatMethod(Object target, long methodID, float arg1, 180e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta float arg2, float arg3, float arg4) { 18129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, arg1, arg2, arg3, arg4); 182e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 183e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta 184e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta @LayoutlibDelegate 185e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta /*package*/ static void nCallMultipleFloatMethod(Object target, long methodID, 186e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta float[] args) { 18729ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez assert args != null; 18829ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez 18929ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez // Box parameters 19029ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez Object[] params = new Object[args.length]; 19129ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez for (int i = 0; i < args.length; i++) { 19229ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez params[i] = args; 19329ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez } 19429ed07524ce0fc2e5950f5340d306247145d0efaDiego Perez callMethod(target, methodID, params); 195e05bb956ce429618fd4f971a9dc708b9313c59eaDeepanshu Gupta } 196282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski} 197