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Edit File: preview-iframe.js

import './preview-iframe.scss';

export default function PreviewIFrame( props ) {
	const ref = React.useRef( null ),
		previewBreakpoint = 1200,
		[ scale, setScale ] = React.useState( 1 ),
		[ height, setHeight ] = React.useState( 0 );

// In order to make sure that the iframe itself show the content in specific viewport,
	// and it should fit to the size of the card, there is a use of css props `scale` and `height`,
	// and another element that wraps the iframe to be the guidelines of the iframe sizes.
	React.useEffect( () => {
		const currentScale = ref.current.clientWidth / previewBreakpoint;

setScale( currentScale );
		setHeight( ref.current.clientHeight / currentScale );
	}, [] );

return (
		<div
			ref={ ref }
			className={ `site-editor__preview-iframe site-editor__preview-iframe--${ props.templateType }` }
		>
			<iframe
				title="preview"
				src={ props.src }
				className={ `site-editor__preview-iframe__iframe` }
				style={ { transform: `scale(${ scale })`, height, width: previewBreakpoint } }
			/>
		</div>
	);
}

PreviewIFrame.propTypes = {
	src: PropTypes.string.isRequired,
	templateType: PropTypes.string.isRequired,
};

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