Set default tuning params

AsyncDisplayKit.xcodeproj/project.pbxproj

@@ -314,6 +314,7 @@
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+		C018DF21216BF26700181FDA /* ASAbstractLayoutController+FrameworkPrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = C018DF20216BF26600181FDA /* ASAbstractLayoutController+FrameworkPrivate.h */; };
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@@ -827,6 +828,7 @@
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 		BB5FC3D01F9C9389007F191E /* ASTabBarControllerTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ASTabBarControllerTests.m; sourceTree = "<group>"; };
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+		C018DF20216BF26600181FDA /* ASAbstractLayoutController+FrameworkPrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "ASAbstractLayoutController+FrameworkPrivate.h"; sourceTree = "<group>"; };
 		C057D9BC20B5453D00FC9112 /* ASTextNode2SnapshotTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ASTextNode2SnapshotTests.m; sourceTree = "<group>"; };
 		CC034A071E60BEB400626263 /* ASDisplayNode+Convenience.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "ASDisplayNode+Convenience.h"; sourceTree = "<group>"; };
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@@ -1457,6 +1459,7 @@
 				058D0A03195D050800B7D73C /* _ASCoreAnimationExtras.h */,
 				058D0A04195D050800B7D73C /* _ASCoreAnimationExtras.mm */,
 				AC026B6D1BD57DBF00BBC17E /* _ASHierarchyChangeSet.h */,
+				C018DF20216BF26600181FDA /* ASAbstractLayoutController+FrameworkPrivate.h */,
 				AC026B6E1BD57DBF00BBC17E /* _ASHierarchyChangeSet.mm */,
 				058D0A05195D050800B7D73C /* _ASPendingState.h */,
 				058D0A06195D050800B7D73C /* _ASPendingState.mm */,
@@ -1878,6 +1881,7 @@
 				CC0F88621E4281E200576FED /* ASSectionController.h in Headers */,
 				CCB1F95C1EFB6350009C7475 /* ASSignpost.h in Headers */,
 				A2763D7A1CBDD57D00A9ADBD /* ASPINRemoteImageDownloader.h in Headers */,
+				C018DF21216BF26700181FDA /* ASAbstractLayoutController+FrameworkPrivate.h in Headers */,
 				34EFC7611B701C9C00AD841F /* ASBackgroundLayoutSpec.h in Headers */,
 				B35062591B010F070018CF92 /* ASBaseDefines.h in Headers */,
 				B35062131B010EFD0018CF92 /* ASBasicImageDownloader.h in Headers */,
@@ -2090,8 +2094,6 @@
 				058D09B8195D04C000B7D73C /* Sources */,
 				058D09B9195D04C000B7D73C /* Frameworks */,
 				058D09BA195D04C000B7D73C /* Resources */,
-				3B9D88CDF51B429C8409E4B6 /* [CP] Copy Pods Resources */,
-				B130AB1AC0A1E5162E211C19 /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -2211,36 +2213,6 @@
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 			showEnvVarsInLog = 0;
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-			name = "[CP] Copy Pods Resources";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-AsyncDisplayKitTests/Pods-AsyncDisplayKitTests-resources.sh\"\n";
-			showEnvVarsInLog = 0;
-		};
-		B130AB1AC0A1E5162E211C19 /* [CP] Embed Pods Frameworks */ = {
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-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-AsyncDisplayKitTests/Pods-AsyncDisplayKitTests-frameworks.sh\"\n";
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CHANGELOG.md

@@ -1,5 +1,6 @@
 ## master
 * Add your own contributions to the next release on the line below this with your name.
+- [ASCollectionViewLayoutController] Set default tuning parameters before view is loaded. [Max Wang](https://github.com/wsdwsd0829). [#1158](https://github.com/TextureGroup/Texture/pull/1158)
 - [ASPhotosFrameworkImageRequestTests] Guard photo library with macro for tests. [Max Wang](https://github.com/wsdwsd0829). [#1147](https://github.com/TextureGroup/Texture/pull/1147)
 - [ASDisplayNode] Do not cancel display when in exit hierarchy but let interface state changing to handle it. [Max Wang](https://github.com/wsdwsd0829). [#1110](https://github.com/TextureGroup/Texture/pull/1110)
 - [Breaking][ASDisplayNode] Make interface state delegate protocol required. [Max Wang](https://github.com/wsdwsd0829). [#1112](https://github.com/TextureGroup/Texture/pull/1112)

Source/ASCollectionNode.mm

@@ -27,6 +27,7 @@
 #import <AsyncDisplayKit/ASCollectionView+Undeprecated.h>
 #import <AsyncDisplayKit/ASThread.h>
 #import <AsyncDisplayKit/ASRangeController.h>
+#import <AsyncDisplayKit/ASAbstractLayoutController+FrameworkPrivate.h>
 
 #pragma mark - _ASCollectionPendingState
 
@@ -62,7 +63,7 @@ - (instancetype)init
   self = [super init];
   if (self) {
     _rangeMode = ASLayoutRangeModeUnspecified;
-    _tuningParameters = std::vector<std::vector<ASRangeTuningParameters>> (ASLayoutRangeModeCount, std::vector<ASRangeTuningParameters> (ASLayoutRangeTypeCount, ASRangeTuningParametersZero));
+    _tuningParameters = [ASAbstractLayoutController defaultTuningParameters];
     _allowsSelection = YES;
     _allowsMultipleSelection = NO;
     _inverted = NO;
@@ -220,11 +221,9 @@ - (void)didLoad
       let tuningParametersVectorRangeModeSize = tuningparametersRangeModeVector.size();
       for (NSInteger rangeType = 0; rangeType < tuningParametersVectorRangeModeSize; rangeType++) {
         ASRangeTuningParameters tuningParameters = tuningparametersRangeModeVector[rangeType];
-        if (!ASRangeTuningParametersEqualToRangeTuningParameters(tuningParameters, ASRangeTuningParametersZero)) {
-          [_rangeController setTuningParameters:tuningParameters
-                                   forRangeMode:(ASLayoutRangeMode)rangeMode
-                                      rangeType:(ASLayoutRangeType)rangeType];
-        }
+        [_rangeController setTuningParameters:tuningParameters
+                                 forRangeMode:(ASLayoutRangeMode)rangeMode
+                                    rangeType:(ASLayoutRangeType)rangeType];
       }
     }
 

Source/ASTableNode.mm

@@ -22,6 +22,7 @@
 #import <AsyncDisplayKit/ASThread.h>
 #import <AsyncDisplayKit/ASDisplayNode+Beta.h>
 #import <AsyncDisplayKit/ASRangeController.h>
+#import <AsyncDisplayKit/ASAbstractLayoutController+FrameworkPrivate.h>
 
 #pragma mark - _ASTablePendingState
 
@@ -54,7 +55,7 @@ - (instancetype)init
   self = [super init];
   if (self) {
     _rangeMode = ASLayoutRangeModeUnspecified;
-    _tuningParameters = std::vector<std::vector<ASRangeTuningParameters>> (ASLayoutRangeModeCount, std::vector<ASRangeTuningParameters> (ASLayoutRangeTypeCount, ASRangeTuningParametersZero));
+    _tuningParameters = [ASAbstractLayoutController defaultTuningParameters];
     _allowsSelection = YES;
     _allowsSelectionDuringEditing = NO;
     _allowsMultipleSelection = NO;
@@ -171,11 +172,9 @@ - (void)didLoad
       let tuningParametersVectorRangeModeSize = tuningparametersRangeModeVector.size();
       for (NSInteger rangeType = 0; rangeType < tuningParametersVectorRangeModeSize; rangeType++) {
         ASRangeTuningParameters tuningParameters = tuningparametersRangeModeVector[rangeType];
-        if (!ASRangeTuningParametersEqualToRangeTuningParameters(tuningParameters, ASRangeTuningParametersZero)) {
-          [_rangeController setTuningParameters:tuningParameters
-                                   forRangeMode:(ASLayoutRangeMode)rangeMode
-                                      rangeType:(ASLayoutRangeType)rangeType];
-        }
+        [_rangeController setTuningParameters:tuningParameters
+                                 forRangeMode:(ASLayoutRangeMode)rangeMode
+                                    rangeType:(ASLayoutRangeType)rangeType];
       }
     }
 

Source/Details/ASAbstractLayoutController.mm

@@ -8,11 +8,9 @@
 //
 
 #import <AsyncDisplayKit/ASAbstractLayoutController.h>
-
+#import <AsyncDisplayKit/ASAbstractLayoutController+FrameworkPrivate.h>
 #import <AsyncDisplayKit/ASAssert.h>
 
-#include <vector>
-
 ASRangeTuningParameters const ASRangeTuningParametersZero = {};
 
 BOOL ASRangeTuningParametersEqualToRangeTuningParameters(ASRangeTuningParameters lhs, ASRangeTuningParameters rhs)
@@ -89,53 +87,60 @@ @interface ASAbstractLayoutController () {
 
 @implementation ASAbstractLayoutController
 
-- (instancetype)init
++ (std::vector<std::vector<ASRangeTuningParameters>>)defaultTuningParameters
 {
-  if (!(self = [super init])) {
-    return nil;
-  }
-  ASDisplayNodeAssert(self.class != [ASAbstractLayoutController class], @"Should never create instances of abstract class ASAbstractLayoutController.");
-
-  _tuningParameters = std::vector<std::vector<ASRangeTuningParameters>> (ASLayoutRangeModeCount, std::vector<ASRangeTuningParameters> (ASLayoutRangeTypeCount));
-
-  _tuningParameters[ASLayoutRangeModeFull][ASLayoutRangeTypeDisplay] = {
+  var tuningParameters = std::vector<std::vector<ASRangeTuningParameters>> (ASLayoutRangeModeCount, std::vector<ASRangeTuningParameters> (ASLayoutRangeTypeCount));
+
+  tuningParameters[ASLayoutRangeModeFull][ASLayoutRangeTypeDisplay] = {
     .leadingBufferScreenfuls = 1.0,
     .trailingBufferScreenfuls = 0.5
   };
-  _tuningParameters[ASLayoutRangeModeFull][ASLayoutRangeTypePreload] = {
+
+  tuningParameters[ASLayoutRangeModeFull][ASLayoutRangeTypePreload] = {
     .leadingBufferScreenfuls = 2.5,
     .trailingBufferScreenfuls = 1.5
   };
-  
-  _tuningParameters[ASLayoutRangeModeMinimum][ASLayoutRangeTypeDisplay] = {
+
+  tuningParameters[ASLayoutRangeModeMinimum][ASLayoutRangeTypeDisplay] = {
     .leadingBufferScreenfuls = 0.25,
     .trailingBufferScreenfuls = 0.25
   };
-  _tuningParameters[ASLayoutRangeModeMinimum][ASLayoutRangeTypePreload] = {
+  tuningParameters[ASLayoutRangeModeMinimum][ASLayoutRangeTypePreload] = {
     .leadingBufferScreenfuls = 0.5,
     .trailingBufferScreenfuls = 0.25
   };
 
-  _tuningParameters[ASLayoutRangeModeVisibleOnly][ASLayoutRangeTypeDisplay] = {
+  tuningParameters[ASLayoutRangeModeVisibleOnly][ASLayoutRangeTypeDisplay] = {
     .leadingBufferScreenfuls = 0,
     .trailingBufferScreenfuls = 0
   };
-  _tuningParameters[ASLayoutRangeModeVisibleOnly][ASLayoutRangeTypePreload] = {
+  tuningParameters[ASLayoutRangeModeVisibleOnly][ASLayoutRangeTypePreload] = {
     .leadingBufferScreenfuls = 0,
     .trailingBufferScreenfuls = 0
   };
-  
+
   // The Low Memory range mode has special handling. Because a zero range still includes the visible area / bounds,
   // in order to implement the behavior of releasing all graphics memory (backing stores), ASRangeController must check
   // for this range mode and use an empty set for displayIndexPaths rather than querying the ASLayoutController for the indexPaths.
-  _tuningParameters[ASLayoutRangeModeLowMemory][ASLayoutRangeTypeDisplay] = {
+  tuningParameters[ASLayoutRangeModeLowMemory][ASLayoutRangeTypeDisplay] = {
     .leadingBufferScreenfuls = 0,
     .trailingBufferScreenfuls = 0
   };
-  _tuningParameters[ASLayoutRangeModeLowMemory][ASLayoutRangeTypePreload] = {
+  tuningParameters[ASLayoutRangeModeLowMemory][ASLayoutRangeTypePreload] = {
     .leadingBufferScreenfuls = 0,
     .trailingBufferScreenfuls = 0
   };
+  return tuningParameters;
+}
+
+- (instancetype)init
+{
+  if (!(self = [super init])) {
+    return nil;
+  }
+  ASDisplayNodeAssert(self.class != [ASAbstractLayoutController class], @"Should never create instances of abstract class ASAbstractLayoutController.");
+
+  _tuningParameters = [[self class] defaultTuningParameters];
 
   return self;
 }

Source/Details/ASCollectionViewLayoutController.m

@@ -21,7 +21,6 @@
 };
 typedef struct ASRangeGeometry ASRangeGeometry;
 
-
 #pragma mark -
 #pragma mark ASCollectionViewLayoutController
 

Source/Private/ASAbstractLayoutController+FrameworkPrivate.h

@@ -0,0 +1,21 @@
+//
+//  ASAbstractLayoutController+FrameworkPrivate.h
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+//
+// The following methods are ONLY for use by _ASDisplayLayer, _ASDisplayView, and ASDisplayNode.
+// These methods must never be called or overridden by other classes.
+//
+
+#include <vector>
+
+@interface ASAbstractLayoutController (FrameworkPrivate)
+
++ (std::vector<std::vector<ASRangeTuningParameters>>)defaultTuningParameters; 
+
+@end