UCOMmandIt
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uci-utils-rx-class
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improve several aspects 

changed set to make reactive by default, and also traverse and make reactive a plain object by default
master
David Kebler 2020-06-08 14:32:52 -07:00
parent 47e4c34ef5
commit 7ea8c13cbd
4 changed files with 98 additions and 66 deletions
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8
examples/example.js
View File

@ -27,8 +27,8 @@ console.log('changing test to 20, 30 directly')
example.test = 20
example.test = 30
example.rxSubscribe('test',(prop)=>console.log('#############late subscription to \'test\' after 30 ############',prop),'custom')
console.log('changing test to 40 via setPath')
example.setPath('test',40)
console.log('changing test to 40 via set')
example.set('test',40)
console.log('making a deeper property \'another.foo\' reactive')
example.rxAdd('another.foo')
@ -36,7 +36,7 @@ example.rxAdd('another.foo')
example.another.foo = 7
console.log('direct access of another.foo',example.another.foo)
console.log('access via get of another.foo',example.getPath('another.foo'))
console.log('access via get of another.foo',example.get('another.foo'))
console.log('making a deeper property \'some.thing\' reactive that did not exist')
example.rxAdd('some.thing')
@ -51,7 +51,7 @@ console.log('--------------------------')
console.log('now removing reactivity from \'test\'')
example.rxRemove('test')
example.setPath('test',42)
example.set('test',42)
console.log('\'test\' now holds unreactive value')
console.log('now removing reactivity from \'test\' again')
example.rxRemove('test')

51
examples/traverse.js
View File

@ -4,8 +4,8 @@ class Example extends RxClass {
constructor(opts={}){
super(opts)
this.test = {
yesterday: {bar:'bust', foo:3},
today: {bing:5, bong:{who:'first',what:'second'}}
tomrrow: {bar:'fight', foo:'fighters'},
today: {bing:'bing', bong:{who:'first',what:'second'}}
}
}
}
@ -13,35 +13,42 @@ class Example extends RxClass {
const example = new Example({
_rx_ : {
handler: value => {console.log('-----------default subscription handler-------', value)},
skip: 0
skip: 1
}
})
example.foundation = null
console.log('-----EXAMPLE: TRAVERSE OF EXISTING OBJECT OR WHEN SETTING A PLAIN OBJECT-----------')
console.log('instance before doing rx on properties\n')
console.log(example)
console.log('--------------------------')
example.on('changed', (prop) => console.log('emitted----a property changed-----',prop))
example.on('test', (val) => console.log('emitted value of test',val))
// example.on('changed', (prop) => console.log('emitted----a property changed-----',prop))
// example.on('test', (val) => console.log('emitted value of test',val))
console.log('traversing \'test\' and making all leaves reactive')
console.log('traversing exitings object \'test\' and making all leaves reactive')
console.log(example.test)
example.rxAdd('test',{traverse:true})
example.test.today.bong.what = 'third'
example.setPath('test.today.bong.what','forth')
example.setPath('test.today.bong.why','do not know')
console.log('adding new property which is made reactive by default \'test.today.bong.why\'')
example.set('test.today.bong.why','do not know')
console.log('\'test\', values object >', example.getPath('test'))
console.log('\'test\', raw object >', example.getPath('test',true))
console.log('------\'test\', raw object ------ \n', example.get('test',true))
console.log('------ \'test\', values object ------\n>', example.get('test'))
console.log('now add a completely new object to root of \'foundation\' and make it reactive')
const obj = {giskard:'daneel', hari: {name:'seldon', planet:'Helcion'}}
example.set('foundation',obj)
console.log('------\'foundation\', raw object ------ \n', example.get('foundation',true))
console.log('------ \'foundation\', values object ------\n>', example.get('foundation'))
console.log('--------instance after doing rx----\n')
console.log(example)
console.log('--------------------------')
console.log('instance after adding rx to leaves\n')
console.dir(example.test)
console.dir(example._rx_.props)
console.log('--------------------------')
console.log('now remove all rx on \'test.yesterday\'\n')
example.rxRemove('test.today',{traverse:true})
console.dir(example.test)
console.log('rx props')
console.dir(example._rx_.props)
console.log('--------------------------')
console.dir(example)
console.log('now change a reactive property directly like')
console.log('example.foundation.giskard = \'daneel a robot\'')
example.foundation.giskard = 'daneel a robot'
console.log('the new value extracted by the getter is',example.foundation.giskard)

2
readme.md
View File

@ -1,6 +1,6 @@
# uCOMmandIt Reactive Class
A Great Class to Extend has built in support for make reactive any/all class properties and their nested leaves.
A Great Class to Extend! It has built in support to make reactive any/all class properties and their nested leaves.
## Why?

103
src/rx-class.js
View File

@ -2,9 +2,9 @@ import { EventEmitter } from 'events'
import { BehaviorSubject, from } from 'rxjs'
import { distinctUntilChanged, skip } from 'rxjs/operators'
// ** nested object access **
import _get from 'get-value'
import _set from 'set-value'
import _del from 'unset-value'
import $get from 'get-value'
import $set from 'set-value'
import $del from 'unset-value'
// *********************
import equal from 'deep-equal'
import traverse from 'traverse'
@ -12,13 +12,13 @@ import isPlainObject from 'is-plain-object'
export default class RxClass extends EventEmitter {
constructor(opts){
// console.log('constructor', opts)
super(opts)
this._rx_ = {
event: opts._rx_.event || 'changed',
handler: opts._rx_.handler,
props: {},
hooks: [],
root: '', // root path/namespace to added to all get/set paths
operators:[],
skip: opts._rx_.skip == null ? 1 : opts._rx_.skip
}
@ -27,44 +27,60 @@ export default class RxClass extends EventEmitter {
// if property exists it moves value to _ version and creates getter and setter and behavior subject
rxAdd(opath,opts={}) {
const path = this._rxFormatPath(opath)
if (this.isRx(path)) {
console.log(path, 'is already reactive, aborting rxAdd')
return
}
// console.log('making reactive', path,opts)
if (opts.traverse) {
const obj = opts.values ? opts.values : $get(this,path)
const self = this
traverse(_get(this,path)).map(function () {
// console.log('object to traverse', obj)
traverse(obj).map(function () {
if (this.isLeaf) {
// let lpath = []
// if (opts.values) {
// lpath =[]
// } else {
const lpath = this.path
lpath.unshift(path)
// console.log('leaf',lpath,this.node)
self.rxAdd(lpath)
// console.log(`${!opts.values ? 'existing':'new'} leaf on path '${lpath}' with value: ${this.node}`)
self.rxAdd(lpath,{value:this.node})
// console.log(this.get())
}
}
)
return
} // end traverse
const value = _get(this,path)
if (value === undefined) {
console.log ('no current property for', path)
_set(this,path,null)
const value = $get(this,path)
if (value === undefined ) {
// console.log ('no current property or value for',path,'creating temporary null')
$set(this,path,null)
}
const {parent,name} = this.rxGetObj(path,'__parent__')
const rx = this.setPath(['_rx_.props',path],{})
rx.value = value
$set(this,this._rxFormatPath(['_rx_.props',path]),{})
const rx = $get(this,this._rxFormatPath(['_rx_.props',path]))
// console.log('moving',opts.value != null ? opts.value : value,path)
rx.value = opts.value != null ? opts.value : value
rx.path = path
rx.obs = from(new BehaviorSubject({value:value, path:path}).pipe(
// rx.obs = from(new ReplaySubject(1).pipe(
skip(this._rx_.skip),
distinctUntilChanged()
// ,
// takeUntil(_get(this._deleted,path))
// takeUntil($get(this.$deleted,path))
))
rx.subs = {}
this.rxSubscribe(rx,this._rx_.handler,'_default')
this.rxSubscribe(rx,(opts.subscribe ||{}).handler,(opts.subscribe || {}).name)
const self = this
Object.defineProperty(parent, name, {
configurable: true,
enumerable: true,
get () {return rx.value},
get () {
return rx.value
},
set (value) {
rx.value = value
rx.obs.next({value:value, path:path})
@ -91,11 +107,11 @@ export default class RxClass extends EventEmitter {
path = path.split('.')
const name = path.pop()
path = path.join('.')
let parent = path ? _get(this,path) : this
let parent = path ? $get(this,path) : this
// console.log(name,path,parent)
if (parent === null) parent = {}
if (prop==='__parent__') return {name:name, parent:parent, parentPath:path}
const rx = this.getPath(['_rx_.props',path,name],true)
const rx = this.get(['_rx_.props',path,name],true)
// console.log(path,name,'reactive object',rx)
return prop ? (rx || {})[prop] : rx
}
@ -104,7 +120,7 @@ export default class RxClass extends EventEmitter {
rxRemove(path,opts={}) {
if (opts.traverse) {
const self = this
traverse(_get(this,path)).map(function () {
traverse($get(this,path)).map(function () {
if (this.isLeaf) {
const lpath = this.path
lpath.unshift(path)
@ -116,7 +132,7 @@ export default class RxClass extends EventEmitter {
return
}
let { parent, name, parentPath } = this.rxGetObj(path,'__parent__')
const rxparent = this.getPath(['_rx_.props',parentPath],true)
const rxparent = this.get(['_rx_.props',parentPath],true)
const rx = rxparent[name]
if (rx && Object.getOwnPropertyDescriptor(parent, name)['get']) {
Object.values(rx.subs).forEach(sub=>sub.unsubscribe())
@ -128,7 +144,6 @@ export default class RxClass extends EventEmitter {
// pass rx as object or path
rxSubscribe(rxObj,handler,name){
// console.log('subscription',rxObj)
if (typeof name !== 'string') return
rxObj = (typeof rxObj === 'string') ? this.rxGetObj(rxObj) : rxObj
if (typeof handler==='function') rxObj.subs[name] = rxObj.obs.subscribe(handler)
@ -142,40 +157,50 @@ export default class RxClass extends EventEmitter {
return path
}
setObjPath () {return _set(...arguments)}
getObjPath () {return _get(...arguments)}
delObjPath () { return _del(...arguments)}
isRx(path) {
const { parent, name, parentPath } = this.rxGetObj(path,'__parent__')
const rxparent = this.get(['_rx_.props',parentPath],true) || {}
const rx = rxparent[name]
// console.log ('rx parent path',rxparent, rx, !!rx && !!Object.getOwnPropertyDescriptor(parent, name)['get'])
return (!!rx && !!Object.getOwnPropertyDescriptor(parent, name)['get'])
}
setObjPath () {return $set(...arguments)}
getObjPath () {return $get(...arguments)}
delObjPath () {return $del(...arguments)}
delPath(path,confirm) {
path = this._rxFormatPath(path)
if (confirm) _del(this,path)
if (confirm) $del(this,path)
else console.warn('must confirm to delete path',path)
}
getPath(path,raw){
get(path,raw){
path = this._rxFormatPath(path)
const value = _get(this,path)
const value = $get(this,path)
if (!isPlainObject(value) || raw) return value
let obj = {}
traverse(_get(this,path)).map(function () {
let obj = {} // return a copy with actual values
traverse($get(this,path)).map(function () {
if (this.isLeaf) {
// let leaf = this.path // this path is immutable
// console.log(this.path,this.node)
// leaf = leaf.pop()
_set(obj,this.path.join('.'),this.node)
// console.log(obj,this.path.join('.'),this.node)
$set(obj,this.path.join('.'),this.node)
}
}
)
return obj
}
setPath(path,value){
path = this._rxFormatPath(path)
const curValue = _get(this,path)
if (!equal(curValue,value) || !value) {
_set(this,path,value)
set(path,value,opts={}){
if (!opts.noRx || !this.isRx(path)) {
opts = Object.assign(isPlainObject(value) ? {values:value,traverse:true} : {value:value},opts)
this.rxAdd(path,opts)
}
return _get(this,path)
path = this._rxFormatPath(path)
const curValue = $get(this,path)
if (!equal(curValue,value) || !value) {
$set(this,path,value)
}
return $get(this,path)
}
} // end class