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Move out Script generation logic from the Component
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| import { isArray, isFunction } from 'underscore'; | ||
| import { Model } from '../../../common'; | ||
| import Component from '../Component'; | ||
| import { ComponentProperties } from '../types'; | ||
|
|
||
| export interface ScriptData { | ||
| main: string | ((...params: any[]) => any); | ||
| props: string[]; | ||
| } | ||
| const escapeRegExp = (str: string) => { | ||
| return str.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&'); | ||
| }; | ||
|
|
||
| export default class ScriptSubComponent extends Model { | ||
| //@ts-ignore | ||
| get defaults() { | ||
| return { | ||
| main: '', | ||
| props: '', | ||
| scriptUpdated: false, | ||
| }; | ||
| } | ||
|
|
||
| constructor(component: Component, script: ScriptData) { | ||
| super({ component, ...script }); | ||
| this.listenTo(this, 'change:main', this.scriptUpdated); | ||
| } | ||
|
|
||
| get component() { | ||
| return this.get('component'); | ||
| } | ||
|
|
||
| get props(): string[] { | ||
| return this.get('props'); | ||
| } | ||
|
|
||
| initScriptProps() { | ||
| const { component } = this; | ||
| const prop = 'props'; | ||
| const toListen: any = [`change:${prop}`, this.initScriptProps]; | ||
| this.off(...toListen); | ||
| const prevProps: string[] = this.previous(prop) || []; | ||
| const newProps: string[] = this.get(prop) || []; | ||
| const prevPropsEv = prevProps.map(e => `change:${e}`).join(' '); | ||
| const newPropsEv = newProps.map(e => `change:${e}`).join(' '); | ||
| prevPropsEv && component.off(prevPropsEv, this.__scriptPropsChange); | ||
| newPropsEv && component.on(newPropsEv, this.__scriptPropsChange); | ||
| // @ts-ignore | ||
| this.on(...toListen); | ||
| } | ||
|
|
||
| __scriptPropsChange(m: any, v: any, opts: any = {}) { | ||
| if (opts.avoidStore) return; | ||
| this.component.trigger('rerender'); | ||
| } | ||
|
|
||
| /** | ||
| * Script updated | ||
| * @private | ||
| */ | ||
| scriptUpdated() { | ||
| this.set('scriptUpdated', true); | ||
| } | ||
|
|
||
| __getScriptProps() { | ||
| const modelProps = this.component.props(); | ||
| const scrProps = this.props || []; | ||
| return scrProps.reduce((acc, prop) => { | ||
| acc[prop] = modelProps[prop]; | ||
| return acc; | ||
| }, {} as Partial<ComponentProperties>); | ||
| } | ||
|
|
||
| /** | ||
| * Return script in string format, cleans 'function() {..' from scripts | ||
| * if it's a function | ||
| * @param {string|Function} script | ||
| * @return {string} | ||
| * @private | ||
| */ | ||
| getScriptString(script?: string | Function) { | ||
| const { component } = this; | ||
| let scr: string = script || this.get('main') || ''; | ||
|
|
||
| if (!scr) { | ||
| return scr; | ||
| } | ||
|
|
||
| if (this.props) { | ||
| scr = scr.toString().trim(); | ||
| } else { | ||
| // Deprecated | ||
| // Need to convert script functions to strings | ||
| if (isFunction(scr)) { | ||
| let scrStr = scr.toString().trim(); | ||
| scrStr = scrStr.slice(scrStr.indexOf('{') + 1, scrStr.lastIndexOf('}')); | ||
| scr = scrStr.trim(); | ||
| } | ||
|
|
||
| const config = component.em.getConfig(); | ||
| const tagVarStart = escapeRegExp(config.tagVarStart || '{[ '); | ||
| const tagVarEnd = escapeRegExp(config.tagVarEnd || ' ]}'); | ||
| const reg = new RegExp(`${tagVarStart}([\\w\\d-]*)${tagVarEnd}`, 'g'); | ||
| scr = scr.replace(reg, (match, v) => { | ||
| // If at least one match is found I have to track this change for a | ||
| // better optimization inside JS generator | ||
| this.scriptUpdated(); | ||
| const result = component.attributes[v] || ''; | ||
| return isArray(result) || typeof result == 'object' ? JSON.stringify(result) : result; | ||
| }); | ||
| } | ||
| return scr; | ||
| } | ||
| } |
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