android.databinding.tool.expr.ViewFieldExpr Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of compiler Show documentation

The annotation processor for Data Binding. Generates binding classes for runtime.

The newest version!

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.databinding.tool.expr;

import android.databinding.tool.BindingTarget;
import android.databinding.tool.reflection.ModelAnalyzer;
import android.databinding.tool.reflection.ModelClass;
import android.databinding.tool.writer.LayoutBinderWriterKt;

public class ViewFieldExpr extends BuiltInVariableExpr {
    private final BindingTarget mBindingTarget;

    ViewFieldExpr(BindingTarget bindingTarget) {
        super(LayoutBinderWriterKt.getFieldName(bindingTarget), bindingTarget.getInterfaceType(),
                LayoutBinderWriterKt.getFieldName(bindingTarget));
        mBindingTarget = bindingTarget;
    }

    @Override
    public String getInvertibleError() {
        return "View fields may not be the target of two-way binding";
    }

    public BindingTarget getBindingTarget() {
        return mBindingTarget;
    }

    @Override
    protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) {
        final ModelClass type = modelAnalyzer.findClass(mBindingTarget.getInterfaceType(), null);
        if (type == null) {
            return modelAnalyzer.findClass(ModelAnalyzer.VIEW_DATA_BINDING, null);
        }
        return type;
    }

    @Override
    public Expr cloneToModel(ExprModel model) {
        return model.viewFieldExpr(mBindingTarget);
    }
}