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      1 /*
      2  * Copyright (C) 2010 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 android.animation;
     18 
     19 import com.android.layoutlib.bridge.impl.DelegateManager;
     20 import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
     21 
     22 /**
     23  * Delegate implementing the native methods of android.animation.PropertyValuesHolder
     24  *
     25  * Through the layoutlib_create tool, the original native methods of PropertyValuesHolder have been
     26  * replaced by calls to methods of the same name in this delegate class.
     27  *
     28  * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager}
     29  * around to map int to instance of the delegate.
     30  *
     31  * The main goal of this class' methods are to provide a native way to access setters and getters
     32  * on some object. In this case we want to default to using Java reflection instead so the native
     33  * methods do nothing.
     34  *
     35  */
     36 /*package*/ class PropertyValuesHolder_Delegate {
     37 
     38     @LayoutlibDelegate
     39     /*package*/ static long nGetIntMethod(Class<?> targetClass, String methodName) {
     40         // return 0 to force PropertyValuesHolder to use Java reflection.
     41         return 0;
     42     }
     43 
     44     @LayoutlibDelegate
     45     /*package*/ static long nGetFloatMethod(Class<?> targetClass, String methodName) {
     46         // return 0 to force PropertyValuesHolder to use Java reflection.
     47         return 0;
     48     }
     49 
     50     @LayoutlibDelegate
     51     /*package*/ static long nGetMultipleIntMethod(Class<?> targetClass, String methodName,
     52             int numParams) {
     53         // TODO: return the right thing.
     54         return 0;
     55     }
     56 
     57     @LayoutlibDelegate
     58     /*package*/ static long nGetMultipleFloatMethod(Class<?> targetClass, String methodName,
     59             int numParams) {
     60         // TODO: return the right thing.
     61         return 0;
     62     }
     63 
     64     @LayoutlibDelegate
     65     /*package*/ static void nCallIntMethod(Object target, long methodID, int arg) {
     66         // do nothing
     67     }
     68 
     69     @LayoutlibDelegate
     70     /*package*/ static void nCallFloatMethod(Object target, long methodID, float arg) {
     71         // do nothing
     72     }
     73 
     74     @LayoutlibDelegate
     75     /*package*/ static void nCallTwoIntMethod(Object target, long methodID, int arg1,
     76             int arg2) {
     77         // do nothing
     78     }
     79 
     80     @LayoutlibDelegate
     81     /*package*/ static void nCallFourIntMethod(Object target, long methodID, int arg1,
     82             int arg2, int arg3, int arg4) {
     83         // do nothing
     84     }
     85 
     86     @LayoutlibDelegate
     87     /*package*/ static void nCallMultipleIntMethod(Object target, long methodID,
     88             int[] args) {
     89         // do nothing
     90     }
     91 
     92     @LayoutlibDelegate
     93     /*package*/ static void nCallTwoFloatMethod(Object target, long methodID, float arg1,
     94             float arg2) {
     95         // do nothing
     96     }
     97 
     98     @LayoutlibDelegate
     99     /*package*/ static void nCallFourFloatMethod(Object target, long methodID, float arg1,
    100             float arg2, float arg3, float arg4) {
    101         // do nothing
    102     }
    103 
    104     @LayoutlibDelegate
    105     /*package*/ static void nCallMultipleFloatMethod(Object target, long methodID,
    106             float[] args) {
    107         // do nothing
    108     }
    109 }
    110