feat:add scrollview on iOS

iOS/Pod/Classes/Shader/DoricGroupNode.h

@@ -25,7 +25,6 @@
 NS_ASSUME_NONNULL_BEGIN
 
 @interface DoricGroupNode <V:UIView *> : DoricSuperNode<V>
-@property(nonatomic, assign) BOOL reusable;
 @end
 
 NS_ASSUME_NONNULL_END

iOS/Pod/Classes/Shader/DoricGroupNode.m

@@ -34,7 +34,6 @@ - (instancetype)initWithContext:(DoricContext *)doricContext {
     if (self = [super initWithContext:doricContext]) {
         _childNodes = @[];
         _childViewIds = @[];
-        _reusable = NO;
     }
     return self;
 }

iOS/Pod/Classes/Shader/DoricListItemNode.m

@@ -38,6 +38,11 @@ - (instancetype)initWithContext:(DoricContext *)doricContext {
     return self;
 }
 
+- (void)initWithSuperNode:(DoricSuperNode *)superNode {
+    [super initWithSuperNode:superNode];
+    self.reusable = YES;
+}
+
 - (DoricStackView *)build {
     return [DoricListItemView new];
 }

iOS/Pod/Classes/Shader/DoricScrollerNode.h

@@ -0,0 +1,9 @@
+//
+// Created by pengfei.zhou on 2019/11/19.
+//
+
+#import <Foundation/Foundation.h>
+#import "DoricSuperNode.h"
+
+@interface DoricScrollerNode : DoricSuperNode<UIScrollView *>
+@end

iOS/Pod/Classes/Shader/DoricScrollerNode.m

@@ -0,0 +1,90 @@
+//
+// Created by pengfei.zhou on 2019/11/19.
+//
+
+#import "DoricScrollerNode.h"
+#import "DoricExtensions.h"
+
+@interface DoricScrollView : UIScrollView
+@end
+
+@implementation DoricScrollView
+
+- (void)layoutSubviews {
+    [super layoutSubviews];
+    if (self.subviews.count > 0) {
+        UIView *child = self.subviews[0];
+        [self setContentSize:child.frame.size];
+    }
+}
+
+- (CGSize)sizeThatFits:(CGSize)size {
+    if (self.subviews.count > 0) {
+        UIView *child = self.subviews[0];
+        CGSize childSize = [child sizeThatFits:size];
+        return CGSizeMake(MIN(size.width, childSize.width), MIN(size.height, childSize.height));
+    }
+    return CGSizeZero;
+}
+@end
+
+@interface DoricScrollerNode ()
+@property(nonatomic, strong) DoricViewNode *childNode;
+@property(nonatomic, copy) NSString *childViewId;
+@end
+
+@implementation DoricScrollerNode
+- (UIScrollView *)build {
+    return [DoricScrollView new];
+}
+
+- (void)blend:(NSDictionary *)props {
+    [super blend:props];
+    NSDictionary *childModel = [self subModelOf:self.childViewId];
+    if (!childModel) {
+        return;
+    }
+    NSString *viewId = childModel[@"id"];
+    NSString *type = childModel[@"type"];
+    NSDictionary *childProps = childModel[@"props"];
+    if (self.childNode) {
+        if ([self.childNode.viewId isEqualToString:viewId]) {
+            //skip
+        } else {
+            if (self.reusable && [type isEqualToString:self.childNode.type]) {
+                [self.childNode also:^(DoricViewNode *it) {
+                    it.viewId = viewId;
+                    [it blend:childProps];
+                }];
+            } else {
+                [self.childNode.view removeFromSuperview];
+                self.childNode = [[DoricViewNode create:self.doricContext withType:type] also:^(DoricViewNode *it) {
+                    it.viewId = viewId;
+                    [it initWithSuperNode:self];
+                    [it blend:childProps];
+                    [self.view addSubview:it.view];
+                }];
+            }
+        }
+    } else {
+        self.childNode = [[DoricViewNode create:self.doricContext withType:type] also:^(DoricViewNode *it) {
+            it.viewId = viewId;
+            [it initWithSuperNode:self];
+            [it blend:childProps];
+            [self.view addSubview:it.view];
+        }];
+    }
+}
+
+- (void)blendView:(UIScrollView *)view forPropName:(NSString *)name propValue:(id)prop {
+    if ([@"content" isEqualToString:name]) {
+        self.childViewId = prop;
+    } else {
+        [super blendView:view forPropName:name propValue:prop];
+    }
+}
+
+- (void)blendSubNode:(NSDictionary *)subModel {
+    [self.childNode blend:subModel];
+}
+@end

iOS/Pod/Classes/Shader/DoricSuperNode.h

@@ -21,6 +21,8 @@
 #import "DoricViewNode.h"
 
 @interface DoricSuperNode<V:UIView *> : DoricViewNode<V>
+@property(nonatomic, assign) BOOL reusable;
+
 - (DoricLayoutConfig *)generateDefaultLayoutParams;
 
 - (void)blendSubNode:(DoricViewNode *)subNode layoutConfig:(NSDictionary *)layoutConfig;

iOS/Pod/Classes/Shader/DoricViewNode.m

@@ -81,6 +81,9 @@ - (instancetype)initWithContext:(DoricContext *)doricContext {
 
 
 - (void)initWithSuperNode:(DoricSuperNode *)superNode {
+    if ([self isKindOfClass:[DoricSuperNode class]]) {
+        ((DoricSuperNode *) self).reusable = superNode.reusable;
+    }
     self.superNode = superNode;
     self.view = [[self build] also:^(UIView *it) {
         it.layoutConfig = [superNode generateDefaultLayoutParams];