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 27 ViewFieldExpr(BindingTarget bindingTarget) { 28 super(LayoutBinderWriterKt.getFieldName(bindingTarget), bindingTarget.getInterfaceType(), 29 LayoutBinderWriterKt.getFieldName(bindingTarget)); 30 mBindingTarget = bindingTarget; 31 } 32 33 @Override 34 public String getInvertibleError() { 35 return "View fields may not be the target of two-way binding"; 36 } 37 38 public BindingTarget getBindingTarget() { 39 return mBindingTarget; 40 } 41 42 @Override 43 protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { 44 final ModelClass type = modelAnalyzer.findClass(mBindingTarget.getInterfaceType(), null); 45 if (type == null) { 46 return modelAnalyzer.findClass(ModelAnalyzer.VIEW_DATA_BINDING, null); 47 } 48 return type; 49 } 50 51 @Override 52 public Expr cloneToModel(ExprModel model) { 53 return model.viewFieldExpr(mBindingTarget); 54 } 55 } 56
