br.com.objectos.ui.html.ElementMethod Maven / Gradle / Ivy

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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.ui.html;

import java.util.List;
import java.util.stream.Collectors;

import javax.lang.model.element.Modifier;

import br.com.objectos.way.pojo.Pojo;
import br.com.objectos.way.testable.Testable;
import br.com.objectos.way.code.MethodInfo;

import com.squareup.javapoet.ClassName;
import com.squareup.javapoet.JavaFile;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeName;
import com.squareup.javapoet.TypeSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
@Pojo
abstract class ElementMethod implements Testable {

  abstract String tagName();
  abstract ClassName className();
  abstract TypeName protoTypeName();
  abstract List childList();

  ElementMethod() {
  }

  public static ElementMethodBuilder builder() {
    return new ElementMethodBuilderPojo();
  }

  public static ElementMethod of(Naming naming, MethodInfo methodInfo) {
    ClassName className = naming.elementMethodClassName(methodInfo);
    return ElementMethod.builder()
        .tagName(methodInfo.name())
        .className(className)
        .protoTypeName(naming.protoTypeName(className))
        .childList(Child.listOf(className, methodInfo))
        .build();
  }

  public JavaFile generate() {
    String packageName = className().packageName();
    TypeSpec typeSpec = type();
    return JavaFile.builder(packageName, typeSpec)
        .skipJavaLangImports(true)
        .build();
  }

  public TypeSpec type() {
    return TypeSpec.classBuilder(className().simpleName())
        .addAnnotation(SpecProcessor.ANNOTATION_SPEC)
        .addModifiers(Modifier.PUBLIC)
        .superclass(protoTypeName())
        .addMethods(childrenMethods())
        .addMethod(self())
        .addTypes(childrenInnerClass())
        .build();
  }

  MethodSpec self() {
    return MethodSpec.methodBuilder("self")
        .addAnnotation(Override.class)
        .returns(className())
        .addStatement("return this")
        .build();
  }

  MethodSpec specOverride() {
    return MethodSpec.methodBuilder(tagName())
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .returns(className())
        .addStatement("return new $T()", className())
        .build();
  }

  private List childrenInnerClass() {
    return childList().stream()
        .map(Child::innerClass)
        .collect(Collectors.toList());
  }

  private List childrenMethods() {
    return childList().stream()
        .map(Child::method)
        .flatMap(List::stream)
        .collect(Collectors.toList());
  }

}