sy-bind
Version:
A lightweight binding framework for Cocos Creator
232 lines • 11.8 kB
JavaScript
import { SyBindUtility } from "../Utils/SyBindUtility.js";
import { SyListResult } from "../Utils/SyResult.js";
import { SyReflect } from "../Utils/SyReflect.js";
export class SyBind {
static bind(source, target, handled, triggerImmediately = true, bindType) {
if (SyReflect.isProxy(source))
return SyBind._bind(source, target, handled, triggerImmediately, bindType);
return {
success: false,
error: 'The target is not the desired proxy, try to decorate her with @Bind?',
code: 101
};
}
static _bind(source, target, handled, triggerImmediately = true, bindType) {
Object.keys(target).forEach(targetKey => {
if (SyReflect.isMarked(target[targetKey])) {
SyBind._bind(source, target[targetKey], handled, triggerImmediately);
}
else {
const bindKey = SyReflect.getPropMetada(target, targetKey);
if (bindKey === undefined)
return; //退出当层循环
const updateStrategy = SyBindUtility.resolveUpdateStrategy(handled, target[targetKey])
?? ((value) => { }); // 使用 ?? 运算符兜底
bindKey.forEach(key => {
if (key.indexOf('/') !== -1) {
const sourcePath = SyBindUtility.parsePropertyPath(source, key);
if (sourcePath.parent !== undefined && sourcePath.target != undefined) {
if (sourcePath.prop in sourcePath.parent) {
SyBindUtility.listen(sourcePath.parent, sourcePath.prop, updateStrategy, triggerImmediately, bindType);
}
}
}
else {
if (key in source) {
SyBindUtility.listen(source, key, updateStrategy, triggerImmediately, bindType);
}
}
});
}
});
return {
success: true
};
}
static pbind(source, sourceProp, target, handled, triggerImmediately = true, bindType) {
if (SyReflect.isProxy(source)) {
const updateStrategy = SyBindUtility.resolveUpdateStrategy(handled, target)
?? ((value) => { }); // 使用 ?? 运算符兜底
return SyBindUtility.listen(source, sourceProp, updateStrategy, triggerImmediately, bindType);
}
return {
success: false,
error: 'The target is not the desired proxy, try to decorate her with @Bind?',
code: 101
};
}
static lbind(source, target, handled, leader, triggerImmediately = true, bindType) {
//验证是否被BindClass修饰或以为Proxy
const t_leader = leader ? leader : source;
if (SyReflect.isProxy(t_leader)) {
//选举leader
//为leader添加监听，当触发对象变更时，触发相关操作
//获取或复用管道,同时管道上的对象赋予监听
const node = SyBindUtility.rlResolve(t_leader, source);
if (node === undefined)
return {
success: false,
error: 'An unexpected situation occurred while initializing the pipeline',
code: 202
};
return SyBind._lbind(node, source, target, handled, triggerImmediately, bindType);
}
return {
success: false,
error: 'The target is not the desired proxy, try to decorate her with @Bind?',
code: 101
};
}
static _lbind(node, source, target, handled, triggerImmediately = true, bindType) {
Object.keys(target).forEach(targetKey => {
if (SyReflect.isMarked(target[targetKey])) {
SyBind._lbind(node, source, target[targetKey], handled, triggerImmediately);
}
else {
const bindKey = SyReflect.getPropMetada(target, targetKey);
if (!bindKey)
return;
const updateStrategy = SyBindUtility.resolveUpdateStrategy(handled, target[targetKey])
?? ((value) => { }); // 使用 ?? 运算符兜底
//判断bindkey中是否存在 / 如果存在则代表深层绑定，递归判断其父类是否为proxy，是则在其直接父类上添加监听方法
bindKey.forEach(key => {
if (key.indexOf('/') !== -1) {
//
const sourcePath = SyBindUtility.parsePropertyPath(source, key);
if (sourcePath.parent !== undefined && sourcePath.target !== undefined) {
if (sourcePath.prop in sourcePath.parent) {
const childList = key.split('/');
const finalNode = SyBindUtility.applyChain(node, source, childList);
if (finalNode === null) {
throw new Error();
}
SyBindUtility.lListen(finalNode, sourcePath.prop, updateStrategy, triggerImmediately, bindType);
}
}
}
else {
if (key in source) {
SyBindUtility.lListen(node, key, updateStrategy, triggerImmediately, bindType);
}
}
});
}
});
return {
success: true
};
}
static lpbind(source, sourceProp, target, handled, leader, triggerImmediately = true, bindType) {
if (SyReflect.isProxy(source)) {
const t_leader = leader ? leader : source;
const updateStrategy = SyBindUtility.resolveUpdateStrategy(handled, target)
?? ((value) => { }); // 使用 ?? 运算符兜底
//获取到一个只需要newvalue的function
const node = SyBindUtility.rlResolve(t_leader, source);
if (node === undefined)
return {
success: false,
error: 'An unexpected situation occurred while initializing the pipeline',
code: 202
};
return SyBindUtility.lListen(node, sourceProp, updateStrategy, triggerImmediately, bindType);
}
return {
success: false,
error: 'The target is not the desired proxy, try to decorate her with @Bind?',
code: 101
};
}
static bindlist(source, target, componentType, handled, createTarget, triggerImmediately = true, bindType) {
if (SyReflect.isProxy(source)) {
const tree = SyBindUtility.getOrCreateHead(source);
if (tree !== undefined) {
return SyBind._bindlist(tree, target, componentType, handled, createTarget, triggerImmediately, bindType);
}
return undefined;
}
return undefined;
}
static _bindlist(tree, target, componentType, handled, createTarget, triggerImmediately = true, bindType) {
const headpipe = tree.pipe;
const container = SyBindUtility.getOrCreateContainer(headpipe).data;
const containerMethods = container.getContainerMethods(target, componentType, createTarget);
const targetList = target.getComponentsInChildren(componentType);
const targetfirst = (targetList.length > 0 ? targetList[0] : createTarget());
SyBind._bindMutant(tree, targetfirst, handled, containerMethods, triggerImmediately, bindType);
//如果是object，判断是否
return new SyListResult(containerMethods);
}
static _bindMutant(tree, target, handled, containerMethods, triggerImmediately = true, bindType) {
Object.keys(target).forEach(targetKey => {
if (SyReflect.isMarked(target[targetKey])) {
SyBind._bindMutant(tree, target[targetKey], handled, containerMethods, triggerImmediately, bindType);
}
else {
const bindKey = SyReflect.getPropMetada(target, targetKey);
if (bindKey === undefined)
return;
bindKey.forEach(key => {
if (key.indexOf('/') !== -1) {
containerMethods.addPush((node, c_target) => {
const c_source = node.obj;
const updateStrategy = SyBindUtility.resolveUpdateStrategy(handled, c_target[targetKey])
?? ((value) => { }); // 使用 ?? 运算符兜底
const sourcePath = SyBindUtility.parsePropertyPath(c_source, key);
if (sourcePath.parent !== undefined && sourcePath.target !== undefined) {
if (sourcePath.prop in sourcePath.parent) {
const childList = key.split('/');
const finalNode = SyBindUtility.applyIndexChain(tree, node, c_source, childList);
if (finalNode === null) {
throw new Error();
}
SyBindUtility.lListen(finalNode, sourcePath.prop, updateStrategy, triggerImmediately, bindType);
}
}
});
}
else {
//if(key in source){
containerMethods.addPush((node, c_target) => {
const updateStrategy = SyBindUtility.resolveUpdateStrategy(handled, c_target[targetKey])
?? ((value) => { }); // 使用 ?? 运算符兜底
SyBindUtility.lListen(node, key, updateStrategy, triggerImmediately, bindType);
});
}
});
}
});
}
static onChange(source, sourceProp, handled, triggerImmediately = true, bindType) {
if (SyReflect.isProxy(source)) {
return SyBindUtility.listen(source, sourceProp, handled, triggerImmediately, bindType);
}
return {
success: false,
error: 'The target is not the desired proxy, try to decorate her with @Bind?',
code: 101
};
}
static onLChange(source, sourceProp, handled, leader, triggerImmediately = true, bindType) {
if (SyReflect.isProxy(source)) {
const t_leader = leader ? leader : source;
const node = SyBindUtility.rlResolve(t_leader, source);
if (node === undefined)
return {
success: false,
error: 'An unexpected situation occurred while initializing the pipeline',
code: 202
};
return SyBindUtility.lListen(node, sourceProp, handled, triggerImmediately, bindType);
}
return {
success: false,
error: 'The target is not the desired proxy, try to decorate her with @Bind?',
code: 101
};
}
static unBind(source, prop, bindType) {
return SyBindUtility.unlisten(source, prop, bindType);
}
}
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