docx-hub/src/model/variant.js

personalized docx with data

import RichText from "docx4js/lib/openxml/docx/model/control/richtext"
import esprima from "esprima"

var id=0
export default class Variant extends RichText{
	constructor(){
		super(...arguments)
		this.docxPart=this.wDoc.parseContext.part.current
		this.vId=`__${this.constructor.type.split(".").pop()}_${id++}`
		this.parsedCode=arguments[3]
		this._initVariant()
	}

	_initVariant(){
		this.variantParent=null
		this.variantChildren=[]
		this.wDoc.beginVariant(this)
		
		this.variantParent.codeBlock.push({
            "type": "ExpressionStatement",
            "expression": {
                "type": "CallExpression",
                "callee": {
					"type": "MemberExpression",
					"computed": false,
					"object": {
						"type": "Identifier",
						"name": this.vId
					},
					"property": {
						"type": "Identifier",
						"name": "pre_assemble"
					}
				},
                "arguments": []
            }
        })
		
		
		this.variantParent.codeBlock.push(this.parsedCode)
		
		this.variantParent.codeBlock.push({
            "type": "ExpressionStatement",
            "expression": {
                "type": "CallExpression",
                "callee": {
					"type": "MemberExpression",
					"computed": false,
					"object": {
						"type": "Identifier",
						"name": this.vId
					},
					"property": {
						"type": "Identifier",
						"name": "post_assemble"
					}
				},
                "arguments": []
            }
        })
	}

	parse(){//Variant interface
		var r=super.parse(...arguments)
		this.wDoc.endVariant(this)
		return r
	}

	visit(){//Visitor interface
		if(!this.wDoc.data)
			return
		//this.assemble()
	}
	
	pre_assemble(){
		
	}
	
	post_assemble(){
		let a=this.assembledXml
		a && a.removeAttribute('id')
	}
	
	/**
	* assemble the variant Word model with data to a static word model 
	*/
	assemble(){
		this.docxPart.setChanged(true)
	}
	
	set assembledXml(v){
		this._assembledXml=v
	}
	
	get assembledXml(){
		var a;
		if(this.isRootChild)
			return this._assembledXml||this.wXml
		else if(a=this.variantParent.assembledXml)
			return a.querySelector(`[id='${this.vId}']`)
	}
	
	clear(){
		this.assembledXml.$1('sdtContent').innerHTML=""
		/*
		if(this.assembledXml.parentNode)
			this.assembledXml.remove()
		else
			this.assembledXml=null
		*/
	}
}