refactor(ios): add a uiManager getter for UIView (#4022)

For compatibility,
some third-party components want to get UIManager
or HippyBridge directly through UIView,
although there is a slight performance penalty doing this.

renderer/native/ios/renderer/HippyUIManager.h

@@ -33,6 +33,7 @@
 @class HippyComponentMap;
 @protocol HippyImageProviderProtocol;
 
+NS_ASSUME_NONNULL_BEGIN
 
 /**
  * Posted whenever a new root view is registered with HippyUIManager. The userInfo property
@@ -156,3 +157,5 @@ HIPPY_EXTERN NSString *const HippyUIManagerDidEndBatchNotification;
 @property (nonatomic, strong, readonly) id<HippyCustomTouchHandlerProtocol> customTouchHandler;
 
 @end
+
+NS_ASSUME_NONNULL_END

renderer/native/ios/renderer/HippyUIManager.mm

@@ -162,6 +162,18 @@ static void NativeRenderTraverseViewNodes(id<HippyComponent> view, void (^block)
     }
 }
 
+
+@interface UIView (HippyUIManagerPrivate)
+
+/// Bind UIView with HippyUIManager
+/// This is a convenient method for UIView to get HippyUIManager instance.
+/// - Parameter uiManager: HippyUIManager instance
+- (void)setUiManager:(HippyUIManager *)uiManager;
+
+@end
+
+#pragma mark -
+
 #define AssertMainQueue() NSAssert(HippyIsMainQueue(), @"This function must be called on the main thread")
 
 NSString *const HippyUIManagerDidRegisterRootViewNotification = @"HippyUIManagerDidRegisterRootViewNotification";
@@ -318,8 +330,8 @@ - (void)registerRootView:(UIView *)rootView asRootNode:(std::weak_ptr<RootNode>)
     
     // Register view
     [_viewRegistry addRootComponent:rootView rootNode:rootNode forTag:hippyTag];
-    
-    [rootView addObserver:self forKeyPath:@"frame" 
+    rootView.uiManager = self;
+    [rootView addObserver:self forKeyPath:@"frame"
                   options:(NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew)
                   context:NULL];
     CGRect frame = rootView.frame;
@@ -516,6 +528,7 @@ - (UIView *)createViewFromShadowView:(HippyShadowView *)shadowView {
             view.viewName = viewName;
             view.rootTag = rootTag;
             view.hippyShadowView = shadowView;
+            view.uiManager = self;
             [componentData setProps:props forView:view];  // Must be done before bgColor to prevent wrong default
         }
     }
@@ -1523,7 +1536,5 @@ - (void)setCustomTouchHandler:(id<HippyCustomTouchHandlerProtocol>)customTouchHa
     objc_setAssociatedObject(self, @selector(customTouchHandler), customTouchHandler, OBJC_ASSOCIATION_RETAIN);
 }
 
-
 @end
 
-

renderer/native/ios/renderer/component/listview/HippyNextBaseListView.mm

@@ -31,6 +31,7 @@
 #import "HippyShadowView.h"
 #import "UIView+DirectionalLayout.h"
 #import "UIView+Hippy.h"
+#import "UIView+Render.h"
 #import "HippyShadowListView.h"
 
 static NSString *const kCellIdentifier = @"HippyListCellIdentifier";
@@ -48,8 +49,8 @@ @implementation HippyNextBaseListView
 
 #pragma mark - Life Cycle
 
-- (instancetype)initWithBridge:(HippyBridge *)bridge {
-    if (self = [super initWithBridge:bridge]) {
+- (instancetype)initWithFrame:(CGRect)frame {
+    if (self = [super initWithFrame:frame]) {
         _isInitialListReady = NO;
         self.preloadItemNumber = 1;
     }
@@ -220,7 +221,7 @@ - (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView
                                                                                forIndexPath:indexPath];
     HippyShadowView *headerRenderObject = [self.dataSource headerForSection:section];
     if (headerRenderObject && [headerRenderObject isKindOfClass:[HippyShadowView class]]) {
-        UIView *headerView = [self.bridge.uiManager createViewForShadowListItem:headerRenderObject];
+        UIView *headerView = [self.uiManager createViewForShadowListItem:headerRenderObject];
         CGRect frame = headerView.frame;
         frame.origin = CGPointZero;
         headerView.frame = frame;
@@ -272,7 +273,7 @@ - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cell
         cellView = cachedVisibleCellView;
         HippyLogTrace(@"🟢 use cached visible cellView at %@ for %@", indexPath, shadowView.hippyTag);
     } else {
-        cellView = [self.bridge.uiManager createViewForShadowListItem:shadowView];
+        cellView = [self.uiManager createViewForShadowListItem:shadowView];
         [_cachedWeakCellViews setObject:cellView forKey:shadowView.hippyTag];
         HippyLogTrace(@"🟡 create cellView at %@ for %@", indexPath, shadowView.hippyTag);
     }

renderer/native/ios/renderer/component/listview/HippyNextBaseListViewManager.mm → renderer/native/ios/renderer/component/listview/HippyNextBaseListViewManager.m

@@ -48,7 +48,7 @@ @implementation HippyNextBaseListViewManager
 HIPPY_EXPORT_VIEW_PROPERTY(horizontal, BOOL)
 
 - (UIView *)view {
-    return [[HippyNextBaseListView alloc] initWithBridge:self.bridge];
+    return [[HippyNextBaseListView alloc] init];
 }
 
 - (HippyShadowView *)shadowView {

renderer/native/ios/renderer/component/smartViewPager/NativeRenderSmartViewPagerView.mm

@@ -30,7 +30,7 @@
 #import "HippyScrollProtocol.h"
 #import "UIView+MountEvent.h"
 #import "UIView+Hippy.h"
-
+#import "UIView+Render.h"
 #include <objc/runtime.h>
 
 static NSInteger kInfiniteLoopBegin = 2;
@@ -58,8 +58,8 @@ - (void)setPreviousMargin:(CGFloat)previousMargin nextMargin:(CGFloat)nextMargin
 @implementation NativeRenderSmartViewPagerView
 
 #pragma mark Life Cycle
-- (instancetype)initWithBridge:(HippyBridge *)bridge {
-    if (self = [super initWithBridge:bridge]) {
+- (instancetype)initWithFrame:(CGRect)frame {
+    if (self = [super initWithFrame:frame]) {
         _isInitialListReady = NO;
         _dataSource = [[HippyNextBaseListViewDataSource alloc] initWithDataSource:nil 
                                                                      itemViewName:[self compoentItemName]
@@ -356,7 +356,7 @@ - (void)collectionView:(UICollectionView *)collectionView
     NSIndexPath *adjustIndexPath = [NSIndexPath indexPathForRow:cellIndex inSection:indexPath.section];
     HippyWaterfallViewCell *hpCell = (HippyWaterfallViewCell *)cell;
     HippyShadowView *renderObject = [_dataSource cellForIndexPath:adjustIndexPath];
-    UIView *cellView = [self.bridge.uiManager createViewForShadowListItem:renderObject];
+    UIView *cellView = [self.uiManager createViewForShadowListItem:renderObject];
     hpCell.cellView = cellView;
     cellView.parent = self;
 }

renderer/native/ios/renderer/component/view/UIView+Render.h

@@ -0,0 +1,37 @@
+/*!
+ * iOS SDK
+ *
+ * Tencent is pleased to support the open source community by making
+ * Hippy available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company.
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class HippyUIManager;
+/// UIView's UIManager category
+@interface UIView (HippyUIManager)
+
+/// Convenient method to get HippyUIManager instance,
+/// UIView's uiManager property is set when created.
+- (nullable HippyUIManager *)uiManager;
+
+@end
+
+NS_ASSUME_NONNULL_END

renderer/native/ios/renderer/component/view/UIView+Render.m

@@ -0,0 +1,38 @@
+/*!
+ * iOS SDK
+ *
+ * Tencent is pleased to support the open source community by making
+ * Hippy available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company.
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#import "UIView+Render.h"
+#import <objc/runtime.h>
+
+@implementation UIView (HippyUIManager)
+
+- (HippyUIManager *)uiManager {
+    NSValue *weakValue = objc_getAssociatedObject(self, @selector(uiManager));
+    return [weakValue nonretainedObjectValue];
+}
+
+- (void)setUiManager:(HippyUIManager *)uiManager {
+    NSValue *weakValue = [NSValue valueWithNonretainedObject:uiManager];
+    objc_setAssociatedObject(self, @selector(uiManager), weakValue, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end

renderer/native/ios/renderer/component/waterfalllist/HippyWaterfallView.h

@@ -56,9 +56,6 @@ typedef NS_ENUM(NSInteger, NativeRenderScrollState) {
     BOOL _allowNextScrollNoMatterWhat;
 }
 
-/// Weak ref of HippyBridge
-@property (nonatomic, weak, readonly) HippyBridge *bridge;
-
 /**
  * Content inset for HippyWaterfallView
  */
@@ -119,12 +116,6 @@ typedef NS_ENUM(NSInteger, NativeRenderScrollState) {
 @property (nonatomic, copy) HippyDirectEventBlock onRefresh;
 @property (nonatomic, copy) HippyDirectEventBlock onExposureReport;
 
-/// Init method
-/// - Parameter bridge: HippyBridge instance
-- (instancetype)initWithBridge:(HippyBridge *)bridge NS_DESIGNATED_INITIALIZER;
-- (instancetype)initWithFrame:(CGRect)frame NS_UNAVAILABLE;
-- (instancetype)initWithCoder:(NSCoder *)coder NS_UNAVAILABLE;
-
 /**
  * Initial collection view
  */

renderer/native/ios/renderer/component/waterfalllist/HippyWaterfallView.mm

@@ -25,6 +25,7 @@
 #import "HippyFooterRefresh.h"
 #import "HippyWaterfallItemView.h"
 #import "UIView+Hippy.h"
+#import "UIView+Render.h"
 #import "HippyRefresh.h"
 #import "HippyWaterfallViewDataSource.h"
 #import "HippyShadowView.h"
@@ -61,9 +62,8 @@ @implementation HippyWaterfallView {
 
 @synthesize contentSize;
 
-- (instancetype)initWithBridge:(id)bridge {
-    if (self = [super initWithFrame:CGRectZero]) {
-        _bridge = bridge;
+- (instancetype)initWithFrame:(CGRect)frame {
+    if (self = [super initWithFrame:frame]) {
         self.backgroundColor = [UIColor clearColor];
         _scrollListeners = [NSHashTable weakObjectsHashTable];
         _scrollEventThrottle = 100.f;
@@ -266,7 +266,7 @@ - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cell
     if (cachedCellView) {
         cellView = cachedCellView;
     } else {
-        cellView = [self.bridge.uiManager createViewForShadowListItem:shadowView];
+        cellView = [self.uiManager createViewForShadowListItem:shadowView];
         [_cachedWeakCellViews setObject:cellView forKey:shadowView.hippyTag];
     }
 

tests/ios/HippyUIViewCategoryTest.m

@@ -21,7 +21,18 @@
  */
 
 #import <XCTest/XCTest.h>
-#import "UIView+Hippy.h"
+#import <hippy/UIView+Hippy.h>
+#import <hippy/UIView+Render.h>
+#import <hippy/HippyUIManager.h>
+
+@interface UIView (HippyUIManagerUnitTest)
+
+/// Bind UIView with HippyUIManager
+/// This is a convenient method for UIView to get HippyUIManager instance.
+/// - Parameter uiManager: HippyUIManager instance
+- (void)setUiManager:(HippyUIManager *)uiManager;
+
+@end
 
 @interface HippyUIViewCategoryTest : XCTestCase
 
@@ -47,8 +58,15 @@ - (void)testGetHippyRootView {
     XCTAssert([testView hippyRootView] == testSuperView);
     testView.hippyTag = @(11);
     XCTAssert([testView hippyRootView] == nil);
+}
+
+- (void)testGetHippyUIManager {
+    UIView *testView = [UIView new];
+    XCTAssertNil([testView uiManager]);
 
-
+    HippyUIManager *uiManager = [[HippyUIManager alloc] init];
+    XCTAssertNoThrow(testView.uiManager = uiManager);
+    XCTAssertTrue(testView.uiManager == uiManager);
 }