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/**
* External dependencies
*/
import { __ } from '@wordpress/i18n';
import { BlockControls, PlainText } from '@wordpress/editor';
import { Component } from '@wordpress/element';
import { compose } from '@wordpress/compose';
import { withDispatch, withSelect } from '@wordpress/data';
/**
* Internal dependencies
*/
import MarkdownRenderer from './renderer';
/**
* Module variables
*/
const PANEL_EDITOR = 'editor';
const PANEL_PREVIEW = 'preview';
class MarkdownEdit extends Component {
input = null;
state = {
activePanel: PANEL_EDITOR,
};
bindInput = ref => void ( this.input = ref );
componentDidUpdate( prevProps ) {
if (
prevProps.isSelected &&
! this.props.isSelected &&
this.state.activePanel === PANEL_PREVIEW
) {
this.toggleMode( PANEL_EDITOR )();
}
if (
! prevProps.isSelected &&
this.props.isSelected &&
this.state.activePanel === PANEL_EDITOR &&
this.input
) {
this.input.focus();
}
}
isEmpty() {
const source = this.props.attributes.source;
return ! source || source.trim() === '';
}
updateSource = source => this.props.setAttributes( { source } );
handleKeyDown = e => {
const { attributes, removeBlock } = this.props;
const { source } = attributes;
// Remove the block if source is empty and we're pressing the Backspace key
if ( e.keyCode === 8 && source === '' ) {
removeBlock();
e.preventDefault();
}
};
toggleMode = mode => () => this.setState( { activePanel: mode } );
renderToolbarButton( mode, label ) {
const { activePanel } = this.state;
return (
<button
className={ `components-tab-button ${ activePanel === mode ? 'is-active' : '' }` }
onClick={ this.toggleMode( mode ) }
>
<span>{ label }</span>
</button>
);
}
render() {
const { attributes, className, isSelected } = this.props;
const { source } = attributes;
const { activePanel } = this.state;
if ( ! isSelected && this.isEmpty() ) {
return (
<p className={ `${ className }__placeholder` }>
{ __( 'Write your _Markdown_ **here**…', 'jetpack' ) }
</p>
);
}
return (
<div className={ className }>
<BlockControls>
<div className="components-toolbar">
{ this.renderToolbarButton( PANEL_EDITOR, __( 'Markdown', 'jetpack' ) ) }
{ this.renderToolbarButton( PANEL_PREVIEW, __( 'Preview', 'jetpack' ) ) }
</div>
</BlockControls>
{ activePanel === PANEL_PREVIEW || ! isSelected ? (
<MarkdownRenderer className={ `${ className }__preview` } source={ source } />
) : (
<PlainText
className={ `${ className }__editor` }
onChange={ this.updateSource }
onKeyDown={ this.handleKeyDown }
aria-label={ __( 'Markdown', 'jetpack' ) }
innerRef={ this.bindInput }
value={ source }
/>
) }
</div>
);
}
}
export default compose( [
withSelect( select => ( {
currentBlockId: select( 'core/editor' ).getSelectedBlockClientId(),
} ) ),
withDispatch( ( dispatch, { currentBlockId } ) => ( {
removeBlock: () => dispatch( 'core/editor' ).removeBlocks( currentBlockId ),
} ) ),
] )( MarkdownEdit );
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