I have created a pipe to format the XML string that I get from a server as a pretty printing.
import { Pipe, PipeTransform } from '@angular/core';
import * as jQuery from 'jquery';
import { escape } from 'querystring';
import { DomSanitizer, SafeHtml } from '@angular/platform-browser';
//import * as angular from '../angular.js';
//CAMBIAR a string
@Pipe({
name: 'formatXml'
})
export class FormatXmlPipe implements PipeTransform {
constructor(private sanitized: DomSanitizer) { }
transform(xml: String): SafeHtml {
var formatted = '';
var reg = /(>)(<)(\/*)/g;
xml = xml.replace(reg, '$1\r\n$2$3');
var pad = 0;
jQuery.each(xml.split('\r\n'), function (index, node) {
var indent = 0;
if (node.match(/.+<\/\w[^>]*>$/)) {
indent = 0;
} else if (node.match(/^<\/\w/)) {
if (pad != 0) {
pad -= 1;
}
} else if (node.match(/^<\w[^>]*[^\/]>.*$/)) {
indent = 1;
} else {
indent = 0;
}
var padding = '';
for (var i = 0; i < pad; i++) {
padding += ' ';
}
formatted += padding + node + '\r\n';
pad += indent;
});
var escaped = formatted.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/ /g, ' ').replace(/\n/g, '<br />');
// https://stackoverflow.com/questions/39240236/insert-xml-into-dom-in-angular-2
let safeEscaped = this.sanitized.bypassSecurityTrustHtml(escaped);
return safeEscaped;
//let safeEscaped = this.sanitized.bypassSecurityTrustHtml(escaped);
//return safeEscaped;
}
}
the string that I have is shown in the following div
:
<tr *ngFor="let message of messages; let i = index;">
<td *ngIf="i == _rowToShow" >{{message.xmlString | formatXml}}</td>
</tr>
_rowToShow
is just a variable to limit the rows to show to an specific one and it works so it can not be the problem
so basically what I think that it is happening is that I am calling correctly to the pipe formatXml
and I get the correct value of the string, but it is not a trusting HTML so it does not show it properly (it shows only the original XML).
I have read that to solve this problem in Angular 1.2 was just needed to use $sce.trustAsHtml
but I do not really know how to do it.
https://odetocode.com/blogs/scott/archive/2014/09/10/a-journey-with-trusted-html-in-angularjs.aspx
Update
At the end what I get is
SafeValue must use [property]=binding:
plus my XML
Any body know what can be the problem?