package cc.shinichi.library.view.subsampling.decoder;
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import android.graphics.Bitmap;
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import androidx.annotation.NonNull;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationTargetException;
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/**
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* Compatibility factory to instantiate decoders with empty public constructors.
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*
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* @param <T> The base type of the decoder this factory will produce.
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*/
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@SuppressWarnings("WeakerAccess")
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public class CompatDecoderFactory<T> implements DecoderFactory<T> {
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private final Class<? extends T> clazz;
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private final Bitmap.Config bitmapConfig;
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/**
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* Construct a factory for the given class. This must have a default constructor.
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*
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* @param clazz a class that implements {@link cc.shinichi.library.view.subsampling.decoder.ImageDecoder} or {@link cc.shinichi.library.view.subsampling.decoder.ImageRegionDecoder}.
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*/
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public CompatDecoderFactory(@NonNull Class<? extends T> clazz) {
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this(clazz, null);
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}
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/**
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* Construct a factory for the given class. This must have a constructor that accepts a {@link Bitmap.Config} instance.
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*
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* @param clazz a class that implements {@link ImageDecoder} or {@link ImageRegionDecoder}.
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* @param bitmapConfig bitmap configuration to be used when loading images.
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*/
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public CompatDecoderFactory(@NonNull Class<? extends T> clazz, Bitmap.Config bitmapConfig) {
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this.clazz = clazz;
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this.bitmapConfig = bitmapConfig;
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}
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@Override
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@NonNull
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public T make() throws IllegalAccessException, InstantiationException, NoSuchMethodException, InvocationTargetException {
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if (bitmapConfig == null) {
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return clazz.newInstance();
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} else {
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Constructor<? extends T> ctor = clazz.getConstructor(Bitmap.Config.class);
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return ctor.newInstance(bitmapConfig);
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}
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}
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}
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