From 214719b7cf023be95225d1132b31d26f61daf4f9 Mon Sep 17 00:00:00 2001
From: "pengfei.zhou" <pengfeizhou@foxmail.com>
Date: Tue, 10 Dec 2019 17:15:42 +0800
Subject: [PATCH] feat:add onLoadMore for list

---
 Pod/Classes/Shader/DoricListNode.m  | 31 ++++++++++++++++++++++++-----
 Pod/Classes/Shader/DoricSuperNode.h |  2 ++
 Pod/Classes/Shader/DoricSuperNode.m |  7 ++++++-
 3 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/Pod/Classes/Shader/DoricListNode.m b/Pod/Classes/Shader/DoricListNode.m
index 8cb332ce..a5ff7277 100644
--- a/Pod/Classes/Shader/DoricListNode.m
+++ b/Pod/Classes/Shader/DoricListNode.m
@@ -62,6 +62,10 @@ @interface DoricListNode () <UITableViewDataSource, UITableViewDelegate>
 @property(nonatomic, strong) NSMutableDictionary <NSNumber *, NSNumber *> *itemHeights;
 @property(nonatomic, assign) NSUInteger itemCount;
 @property(nonatomic, assign) NSUInteger batchCount;
+@property(nonatomic, copy) NSString *onLoadMoreFuncId;
+@property(nonatomic, copy) NSString *renderItemFuncId;
+@property(nonatomic, copy) NSString *loadMoreViewId;
+@property(nonatomic, assign) BOOL loadMore;
 @end
 
 @implementation DoricListNode
@@ -95,11 +99,22 @@ - (void)blendView:(UITableView *)view forPropName:(NSString *)name propValue:(id
         self.itemCount = [prop unsignedIntegerValue];
         [self.view reloadData];
     } else if ([@"renderItem" isEqualToString:name]) {
-        [self.itemViewIds removeAllObjects];
-        [self clearSubModel];
-        [self.view reloadData];
+        if (![self.renderItemFuncId isEqualToString:prop]) {
+            self.renderItemFuncId = prop;
+            [self.itemViewIds.allValues forEach:^(NSString *obj) {
+                [self removeSubModel:obj];
+            }];
+            [self.itemViewIds removeAllObjects];
+            [self.view reloadData];
+        }
     } else if ([@"batchCount" isEqualToString:name]) {
         self.batchCount = [prop unsignedIntegerValue];
+    } else if ([@"onLoadMore" isEqualToString:name]) {
+        self.onLoadMoreFuncId = prop;
+    } else if ([@"loadMoreView" isEqualToString:name]) {
+        self.loadMoreViewId = prop;
+    } else if ([@"loadMore" isEqualToString:name]) {
+        self.loadMore = [prop boolValue];
     } else {
         [super blendView:view forPropName:name propValue:prop];
     }
@@ -110,7 +125,7 @@ - (void)blend:(NSDictionary *)props {
 }
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
-    return self.itemCount;
+    return self.itemCount + (self.loadMore ? 1 : 0);
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
@@ -118,7 +133,10 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
     NSDictionary *model = [self itemModelAt:position];
     NSDictionary *props = model[@"props"];
     NSString *reuseId = props[@"identifier"];
-
+    if (position > 0 && position >= self.itemCount && self.onLoadMoreFuncId) {
+        reuseId = @"doricLoadMoreCell";
+        [self callJSResponse:self.onLoadMoreFuncId, nil];
+    }
     DoricTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuseId ?: @"doriccell"];
     if (!cell) {
         cell = [[DoricTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseId ?: @"doriccell"];
@@ -148,6 +166,9 @@ - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPa
 }
 
 - (NSDictionary *)itemModelAt:(NSUInteger)position {
+    if (position >= self.itemCount) {
+        return [self subModelOf:self.loadMoreViewId];
+    }
     NSString *viewId = self.itemViewIds[@(position)];
     if (viewId && viewId.length > 0) {
         return [self subModelOf:viewId];
diff --git a/Pod/Classes/Shader/DoricSuperNode.h b/Pod/Classes/Shader/DoricSuperNode.h
index ec456c99..eef33d3b 100644
--- a/Pod/Classes/Shader/DoricSuperNode.h
+++ b/Pod/Classes/Shader/DoricSuperNode.h
@@ -35,6 +35,8 @@
 
 - (void)clearSubModel;
 
+- (void)removeSubModel:(NSString *)viewId;
+
 - (DoricViewNode *)subNodeWithViewId:(NSString *)viewId;
 
 - (void)recursiveMixin:(NSDictionary *)srcModel to:(NSMutableDictionary *)targetModel;
diff --git a/Pod/Classes/Shader/DoricSuperNode.m b/Pod/Classes/Shader/DoricSuperNode.m
index 232722b4..10803205 100644
--- a/Pod/Classes/Shader/DoricSuperNode.m
+++ b/Pod/Classes/Shader/DoricSuperNode.m
@@ -149,11 +149,16 @@ - (void)clearSubModel {
     [self.subNodes removeAllObjects];
 }
 
+- (void)removeSubModel:(NSString *)viewId {
+    [self.subNodes removeObjectForKey:viewId];
+}
+
 - (DoricViewNode *)subNodeWithViewId:(NSString *)viewId {
     NSAssert(NO, @"Should override class:%@ ,method:%@.", NSStringFromClass([self class]),
-               NSStringFromSelector(_cmd));
+            NSStringFromSelector(_cmd));
     return nil;
 }
+
 - (void)requestLayout {
     [self.view setNeedsLayout];
 }