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Doric/doric-iOS/Pod/Classes/Shader/DoricGroupNode.m

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/*
* Copyright [2019] [Doric.Pub]
*
* 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.
*/
//
// DoricGroupNode.m
// Doric
//
// Created by pengfei.zhou on 2019/7/30.
//
#import "DoricGroupNode.h"
@implementation DoricGroupNode
- (instancetype)initWithContext:(DoricContext *)doricContext {
if (self = [super initWithContext:doricContext]) {
_childNodes = @[];
_childViewIds = @[];
}
return self;
}
- (UIView *)build {
UIView *ret = [[UIView alloc] init];
ret.clipsToBounds = YES;
return ret;
}
- (void)blendView:(UIView *)view forPropName:(NSString *)name propValue:(id)prop {
if ([@"children" isEqualToString:name]) {
self.childViewIds = prop;
} else {
[super blendView:view forPropName:name propValue:prop];
}
}
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- (void)afterBlended:(NSDictionary *)props {
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[self configChildNodes];
}
- (void)configChildNodes {
NSMutableArray *childNodes = [self.childNodes mutableCopy];
for (NSUInteger idx = 0; idx < self.childViewIds.count; idx++) {
NSString *viewId = self.childViewIds[idx];
NSDictionary *model = [self subModelOf:viewId];
NSString *type = model[@"type"];
if (idx < self.childNodes.count) {
DoricViewNode *oldNode = childNodes[idx];
if ([viewId isEqualToString:oldNode.viewId]) {
///Same,skip
} else {
if (self.reusable) {
if ([oldNode.type isEqualToString:type]) {
///Same type,can be reused
oldNode.viewId = viewId;
[oldNode blend:model[@"props"]];
} else {
///Replace this view
[childNodes removeObjectAtIndex:idx];
[oldNode.view removeFromSuperview];
DoricViewNode *viewNode = [DoricViewNode create:self.doricContext withType:type];
if ([viewNode isKindOfClass:[DoricGroupNode class]]) {
((DoricGroupNode *) viewNode).reusable = self.reusable;
}
viewNode.viewId = viewId;
[viewNode initWithSuperNode:self];
[viewNode blend:model[@"props"]];
[childNodes insertObject:viewNode atIndex:idx];
[self.view insertSubview:viewNode.view atIndex:idx];
}
} else {
///Find in remain nodes
NSInteger position = -1;
for (NSUInteger start = idx + 1; start < childNodes.count; start++) {
DoricViewNode *node = childNodes[start];
if ([viewId isEqualToString:node.viewId]) {
position = start;
break;
}
}
if (position >= 0) {
///Found ,swap idx,position
DoricViewNode *reused = childNodes[(NSUInteger) position];
[childNodes removeObjectAtIndex:(NSUInteger) position];
[childNodes removeObjectAtIndex:idx];
[childNodes insertObject:reused atIndex:idx];
[childNodes insertObject:oldNode atIndex:(NSUInteger) position];
///View swap index
[reused.view removeFromSuperview];
[oldNode.view removeFromSuperview];
[self.view insertSubview:reused.view atIndex:idx];
[self.view insertSubview:oldNode.view atIndex:position];
} else {
///Not found,insert
DoricViewNode *viewNode = [DoricViewNode create:self.doricContext withType:type];
viewNode.viewId = viewId;
[viewNode initWithSuperNode:self];
[viewNode blend:model[@"props"]];
[childNodes insertObject:viewNode atIndex:idx];
[self.view insertSubview:viewNode.view atIndex:idx];
}
}
}
} else {
/// Insert
DoricViewNode *viewNode = [DoricViewNode create:self.doricContext withType:type];
if ([viewNode isKindOfClass:[DoricGroupNode class]]) {
((DoricGroupNode *) viewNode).reusable = self.reusable;
}
viewNode.viewId = viewId;
[viewNode initWithSuperNode:self];
[viewNode blend:model[@"props"]];
[childNodes insertObject:viewNode atIndex:idx];
[self.view insertSubview:viewNode.view atIndex:idx];
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}
}
NSUInteger count = childNodes.count;
for (NSUInteger idx = self.childViewIds.count; idx < count; idx++) {
DoricViewNode *viewNode = childNodes.lastObject;
[childNodes removeLastObject];
[viewNode.view removeFromSuperview];
}
self.childNodes = [childNodes copy];
}
- (void)blendSubNode:(NSDictionary *)subModel {
NSString *viewId = subModel[@"id"];
[self.childNodes enumerateObjectsUsingBlock:^(DoricViewNode *obj, NSUInteger idx, BOOL *stop) {
if ([viewId isEqualToString:obj.viewId]) {
[obj blend:subModel[@"props"]];
*stop = YES;
}
}];
}
- (DoricViewNode *)subNodeWithViewId:(NSString *)viewId {
for (DoricViewNode *viewNode in self.childNodes) {
if ([viewId isEqualToString:viewNode.viewId]) {
return viewNode;
}
}
return nil;
}
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- (void)requestLayout {
for (DoricViewNode *node in self.childNodes) {
[node requestLayout];
}
}
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@end