Lazy Imagepipeline deps

facebook · Jun 4, 2015 · 96d74f3 · 96d74f3
1 parent d5f855b
commit 96d74f3
Showing 1 changed file with 30 additions and 14 deletions.
diff --git a/...ipeline/src/main/java/com/facebook/imagepipeline/decoder/SimpleProgressiveJpegConfig.java b/...ipeline/src/main/java/com/facebook/imagepipeline/decoder/SimpleProgressiveJpegConfig.java
@@ -9,9 +9,10 @@
 
 package com.facebook.imagepipeline.decoder;
 
-import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
+import com.facebook.common.internal.Preconditions;
 import com.facebook.imagepipeline.image.ImmutableQualityInfo;
 import com.facebook.imagepipeline.image.QualityInfo;
 
@@ -21,28 +22,43 @@
  * <p/> If no specific scans to decode are provided, every scan is allowed to be decoded.
  */
 public class SimpleProgressiveJpegConfig implements ProgressiveJpegConfig {
- private final List<Integer> mScansToDecode;
- private final int mGoodEnoughScanNumber;
+ public interface DynamicValueConfig {
+ List<Integer> getScansToDecode();
+ int getGoodEnoughScanNumber();
+ }
+
+ private static class DefaultDynamicValueConfig implements DynamicValueConfig {
+ public List<Integer> getScansToDecode() {
+ return Collections.EMPTY_LIST;
+ }
+
+ public int getGoodEnoughScanNumber() {
+ return 0;
+ }
+ }
+
+ private final DynamicValueConfig mDynamicValueConfig;
 
  public SimpleProgressiveJpegConfig() {
- this(new ArrayList<Integer>(), 0);
+ this (new DefaultDynamicValueConfig());
  }
 
- public SimpleProgressiveJpegConfig(
- List<Integer> scansToDecode,
- int goodEnoughScanNumber) {
- mScansToDecode = scansToDecode;
- mGoodEnoughScanNumber = goodEnoughScanNumber;
+
+
+ public SimpleProgressiveJpegConfig(DynamicValueConfig dynamicValueConfig) {
+ mDynamicValueConfig = Preconditions.checkNotNull(dynamicValueConfig);
  }
 
  @Override
  public int getNextScanNumberToDecode(int scanNumber) {
- if (mScansToDecode == null || mScansToDecode.isEmpty()) {
+ final List<Integer> scansToDecode = mDynamicValueConfig.getScansToDecode();
+ if (scansToDecode == null || scansToDecode.isEmpty()) {
  return scanNumber + 1;
  }
- for (int i = 0; i < mScansToDecode.size(); i++) {
- if (mScansToDecode.get(i) > scanNumber) {
- return mScansToDecode.get(i);
+
+ for (int i = 0; i < scansToDecode.size(); i++) {
+ if (scansToDecode.get(i) > scanNumber) {
+ return scansToDecode.get(i);
  }
  }
  return Integer.MAX_VALUE;
@@ -52,7 +68,7 @@ public int getNextScanNumberToDecode(int scanNumber) {
  public QualityInfo getQualityInfo(int scanNumber) {
  return ImmutableQualityInfo.of(
  scanNumber,
- /* isOfGoodEnoughQuality */ scanNumber >= mGoodEnoughScanNumber,
+ /* isOfGoodEnoughQuality */ scanNumber >= mDynamicValueConfig.getGoodEnoughScanNumber(),
  /* isOfFullQuality */ false);
  }
 }