/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.react.flat;
import javax.annotation.Nullable;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import com.facebook.drawee.controller.AbstractDraweeControllerBuilder;
import com.facebook.drawee.controller.ControllerListener;
import com.facebook.drawee.generic.GenericDraweeHierarchy;
import com.facebook.drawee.generic.GenericDraweeHierarchyBuilder;
import com.facebook.drawee.interfaces.DraweeController;
import com.facebook.imagepipeline.request.ImageRequest;
import com.facebook.infer.annotation.Assertions;
/* package */ final class DraweeRequestHelper {
private static GenericDraweeHierarchyBuilder sHierarchyBuilder;
private static AbstractDraweeControllerBuilder sControllerBuilder;
/* package */ static void setResources(Resources resources) {
sHierarchyBuilder = new GenericDraweeHierarchyBuilder(resources);
}
/* package */ static void setDraweeControllerBuilder(AbstractDraweeControllerBuilder builder) {
sControllerBuilder = builder;
}
private final DraweeController mDraweeController;
private int mAttachCounter;
/* package */ DraweeRequestHelper(
ImageRequest imageRequest,
@Nullable ImageRequest cachedImageRequest,
ControllerListener listener) {
AbstractDraweeControllerBuilder controllerBuilder = sControllerBuilder
.setImageRequest(imageRequest)
.setCallerContext(RCTImageView.getCallerContext())
.setControllerListener(listener);
if (cachedImageRequest != null) {
controllerBuilder.setLowResImageRequest(cachedImageRequest);
}
DraweeController controller = controllerBuilder.build();
controller.setHierarchy(sHierarchyBuilder.build());
mDraweeController = controller;
}
/* package */ void attach(FlatViewGroup.InvalidateCallback callback) {
++mAttachCounter;
if (mAttachCounter == 1) {
getDrawable().setCallback(callback.get());
mDraweeController.onAttach();
}
}
/* package */ void detach() {
--mAttachCounter;
if (mAttachCounter == 0) {
mDraweeController.onDetach();
}
}
/* package */ GenericDraweeHierarchy getHierarchy() {
return (GenericDraweeHierarchy) Assertions.assumeNotNull(mDraweeController.getHierarchy());
}
/* package */ Drawable getDrawable() {
return getHierarchy().getTopLevelDrawable();
}
}