org.mini2Dx.libgdx.desktop.DesktopComponentScanner Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2019 See AUTHORS file
*
* 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 org.mini2Dx.libgdx.desktop;
import org.mini2Dx.core.di.ComponentScanner;
import org.mini2Dx.core.di.annotation.Prototype;
import org.mini2Dx.core.di.annotation.Singleton;
import org.mini2Dx.gdx.utils.Array;
import org.reflections.Reflections;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.Writer;
import java.util.Scanner;
import java.util.Set;
public class DesktopComponentScanner implements ComponentScanner {
private Array> singletonClasses;
private Array> prototypeClasses;
/**
* Constructor
*/
public DesktopComponentScanner() {
singletonClasses = new Array>();
prototypeClasses = new Array>();
}
/**
* Scans multiple packages recursively for {@link Singleton} and
* {@link Prototype} annotated classes
*
* @param packageNames
* The package name to scan through, e.g. org.mini2Dx.component
*/
public void scan(String[] packageNames) {
for (String packageName : packageNames) {
scan(packageName);
}
}
@Override
public void saveTo(Writer writer) {
final PrintWriter printWriter = new PrintWriter(writer);
printWriter.println("--- Singletons ---");
for(int i = 0; i < singletonClasses.size; i++) {
printWriter.println(singletonClasses.get(i).getName());
}
printWriter.println("--- Prototypes ---");
for(int i = 0; i < prototypeClasses.size; i++) {
printWriter.println(prototypeClasses.get(i).getName());
}
printWriter.flush();
printWriter.close();
}
@Override
public void restoreFrom(Reader reader) throws ClassNotFoundException {
final Scanner scanner = new Scanner(reader);
boolean singletons = true;
scanner.nextLine();
while (scanner.hasNext()) {
final String line = scanner.nextLine();
if(line.startsWith("---")) {
singletons = false;
} else if(singletons) {
singletonClasses.add(Class.forName(line));
} else {
prototypeClasses.add(Class.forName(line));
}
}
scanner.close();
}
/**
* Scans a package recursively for {@link Singleton} and {@link Prototype}
* annotated classes
*
* @param packageName
* The package name to scan through, e.g. org.mini2Dx.component
*/
private void scan(String packageName) {
Reflections reflections = new Reflections(packageName);
Set> singletons = reflections
.getTypesAnnotatedWith(Singleton.class);
for(Class> clazz : singletons) {
singletonClasses.add(clazz);
}
Set> prototypes = reflections
.getTypesAnnotatedWith(Prototype.class);
for(Class> clazz : prototypes) {
prototypeClasses.addAll(clazz);
}
}
public Array> getSingletonClasses() {
return singletonClasses;
}
public Array> getPrototypeClasses() {
return prototypeClasses;
}
}