1 /* 2 * Copyright (C) 2015 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.databinding.tool.expr; 18 19 import android.databinding.tool.BindingTarget; 20 import android.databinding.tool.reflection.ModelAnalyzer; 21 import android.databinding.tool.reflection.ModelClass; 22 import android.databinding.tool.writer.LayoutBinderWriterKt; 23 24 public class ViewFieldExpr extends BuiltInVariableExpr { 25 private final BindingTarget mBindingTarget; 26 ViewFieldExpr(BindingTarget bindingTarget)27 ViewFieldExpr(BindingTarget bindingTarget) { 28 super(LayoutBinderWriterKt.getFieldName(bindingTarget), initialType(bindingTarget), 29 LayoutBinderWriterKt.getFieldName(bindingTarget)); 30 mBindingTarget = bindingTarget; 31 } 32 33 @Override getInvertibleError()34 public String getInvertibleError() { 35 return "View fields may not be the target of two-way binding"; 36 } 37 initialType(BindingTarget bindingTarget)38 private static String initialType(BindingTarget bindingTarget) { 39 return bindingTarget.isBinder() 40 ? "android.databinding.ViewDataBinding" 41 : bindingTarget.getInterfaceType(); 42 } 43 getBindingTarget()44 public BindingTarget getBindingTarget() { 45 return mBindingTarget; 46 } 47 48 @Override resolveType(ModelAnalyzer modelAnalyzer)49 protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { 50 final ModelClass type = modelAnalyzer.findClass(mBindingTarget.getInterfaceType(), null); 51 if (type == null) { 52 return modelAnalyzer.findClass("android.databinding.ViewDataBinding", null); 53 } 54 return type; 55 } 56 } 57