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Change the content of the component if the code property is changed #166

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merged 1 commit into from
Nov 22, 2023
Merged

Change the content of the component if the code property is changed #166

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11 changes: 10 additions & 1 deletion src/pb-code-highlight.js
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@ export class PbCodeHighlight extends themableMixin(LitElement) {
* The code to be highlighted as a string. If not set,
* this will be populated from either a template child element
* or the element's text content.
* The value of the property can be changed programmatically from JavaScript.
*/
code: {
type: String
Expand Down Expand Up @@ -118,6 +119,14 @@ export class PbCodeHighlight extends themableMixin(LitElement) {
updated(changedProperties) {
super.updated(changedProperties);
if (changedProperties.has('code')) {
//if the code property is changed, the content of the <code> element is replaced
const pre = this.shadowRoot.getElementById("pb-code-highlight");
if(pre != null) {
const code = document.createElement("code");
code.textContent = this.code; //textContent property keeps new lines in the code
pre.replaceChildren(code);

}
this.highlight();
}
}
Expand All @@ -130,7 +139,7 @@ export class PbCodeHighlight extends themableMixin(LitElement) {
if (this.code) {
return html`
${this._themeStyles}
<pre class="${this.lineNumbers ? 'line-numbers' : ''} language-${this.language}"><code>${this.code}</code></pre>
<pre id="pb-code-highlight" class="${this.lineNumbers ? 'line-numbers' : ''} language-${this.language}"><code>${this.code}</code></pre>
`;
}
return html`<pre class="line-numbers"><code><code></pre>`;
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