display-featured-image-genesis/includes/js/block.js

/*
 * Copyright (c) 2019 Robin Cornett
 */

(function ( wp, undefined ) {
	'use strict';
	const prefix          = 'displayfeaturedimagegenesis',
	      DFIGBlockObject = {
		el: wp.element.createElement,
	};

	/**
	 * Initialize and register the block.
	 */
	DFIGBlockObject.init = function ( params ) {
		const registerBlockType = wp.blocks.registerBlockType,
		      ServerSideRender  = wp.components.ServerSideRender,
		      InspectorControls = wp.blockEditor.InspectorControls;

		registerBlockType( params.block, {
			title: params.title,
			description: params.description,
			keywords: params.keywords,
			icon: params.icon,
			category: params.category,
			supports: {
				html: false
			},

			getEditWrapperProps( {blockAlignment} ) {
				return {'data-align': blockAlignment};
			},

			edit: props => {
				const {
					      attributes,
					      setAttributes
				      }                     = props,
				      Fragment              = wp.element.Fragment,
				      BlockControls         = wp.blockEditor.BlockControls,
				      BlockAlignmentToolbar = wp.blockEditor.BlockAlignmentToolbar;
				let render = DFIGBlockObject.el( ServerSideRender, {
					block: params.block,
					attributes: attributes
				} );
				if ( params.placeholder && ! attributes[ params.required ] ) {
					render = DFIGBlockObject.el( 'div', {
						className: prefix + '-placeholder',
					}, params.placeholder );
				}

				return [
					render,
					DFIGBlockObject.el( Fragment, null,
						DFIGBlockObject.el( BlockControls, null,
							DFIGBlockObject.el( BlockAlignmentToolbar, {
								value: attributes.blockAlignment,
								controls: ['wide', 'full'],
								onChange: ( value ) => {
									setAttributes( {blockAlignment: value} );
								},
							} )
						),
					),
					DFIGBlockObject.el( InspectorControls, {},
						_getPanels( props, params, params.block ),
						onChangeSelect( false, false, props )
					)
				];
			},

			save: props => {
				return null;
			},
		} );
	};

	/**
	 * Get the panels for the block controls.
	 *
	 * @param props
	 * @param params
	 * @param blockName
	 * @return {Array}
	 * @private
	 */
	function _getPanels( props, params, blockName ) {
		const panels    = [],
		      PanelBody = wp.components.PanelBody;
		Object.keys( params.panels ).forEach( function ( key, index ) {
			if ( params.panels.hasOwnProperty( key ) ) {
				const IndividualPanel = params.panels[key];
				panels[ index ] = DFIGBlockObject.el( PanelBody, {
					title: IndividualPanel.title,
					initialOpen: IndividualPanel.initialOpen,
					className: prefix + '-panel-' + key
				}, _getControls( props, IndividualPanel.attributes, blockName ) );
			}
		} );

		return panels;
	}

	/**
	 * Get all of the block controls, with defaults and options.
	 *
	 * @param props
	 * @param fields
	 * @param blockName
	 * @return {Array}
	 * @private
	 */
	function _getControls( props, fields, blockName ) {
		const controls = [];
		Object.keys( fields ).forEach( function ( key, index ) {
			if ( fields.hasOwnProperty( key ) ) {
				var skipped = [ 'blockAlignment', 'className' ];
				if ( -1 !== skipped.indexOf( key ) ) {
					return;
				}
				const IndividualField = fields[key],
				      control         = _getControlType( IndividualField.method, IndividualField.type );
				controls[index] = DFIGBlockObject.el( control, _getIndividualControl( key, IndividualField, props, blockName ) );
			}
		} );

		return controls;
	}

	/**
	 * Get the control type.
	 * @param method
	 * @param control_type
	 * @return {*}
	 * @private
	 */
	function _getControlType( method, control_type ) {
		const {
			      TextControl,
			      SelectControl,
			      RangeControl,
			      CheckboxControl,
			      TextareaControl
		      } = wp.components;
		const control = TextControl;
		if ( 'select' === method ) {
			return SelectControl;
		} else if ( 'number' === method && 'number' === control_type ) {
			return RangeControl;
		} else if ( 'checkbox' === method ) {
			return CheckboxControl;
		} else if ( 'textarea' === method ) {
			return TextareaControl;
		}

		return control;
	}

	/**
	 * Build the individual control object. Sets up standard properties for all
	 * controls; then adds custom properties as needed.
	 *
	 * @param key
	 * @param field
	 * @param props
	 * @param blockName
	 * @return {{label: *, value: *, className: string, onChange: onChange}}
	 * @private
	 */
	function _getIndividualControl( key, field, props, blockName ) {
		const {attributes, setAttributes} = props;
		const control = {
			label: field.label,
			value: attributes[key],
			className: prefix + '-' + key,
			onChange: ( value ) => {
				if ( 'taxonomy' === key ) {
					onChangeSelect( key, value, props, blockName );
				}
				setAttributes( {[key]: value} );
			}
		};

		if ( 'select' === field.method ) {
			control.options = field.options;
		} else if ( 'number' === field.method ) {
			control.min = field.min;
			control.max = field.max;
			if ( 'number' !== field.type ) {
				control.type = 'number';
			} else {
				control.initialPosition = field.min;
			}
		} else if ( 'checkbox' === field.method ) {
			control.checked = attributes[key];
		}

		return control;
	}

	/**
	 * Update values and options.
	 * @param select_id
	 * @param value
	 * @param props
	 * @param blockName
	 */
	function onChangeSelect( select_id, value, props, blockName ) {
		if ( prefix + '/term' !== blockName ) {
			return;
		}
		const data = _getAjaxData( select_id, value, props );
		_doAjaxUpdate( data, select_id, props );
	}

	/**
	 *
	 * @param select_id
	 * @param value
	 * @param props
	 * @returns {{action: string, security: *}}
	 * @private
	 */
	function _getAjaxData( select_id, value, props ) {
		const data         = {
			      action: prefix + '_block',
			      security: DFIGBlockObject.params.security
		      },
		      {attributes} = props;
		if ( 'taxonomy' === select_id ) {
			data.taxonomy = value;
		} else {
			data.taxonomy = attributes.taxonomy;
		}

		return data;
	}

	/**
	 * Call on our ajax action and update the select
	 * @param data
	 * @param select_id
	 * @param props
	 * @return
	 * @private
	 */
	function _doAjaxUpdate( data, select_id, props ) {
		const {attributes, setAttributes} = props;
		$.post( DFIGBlockObject.params.ajax_url, data, function ( response ) {

			if ( undefined !== response.success && false === response.success ) {
				return false;
			}

			const jsonData = $.parseJSON( response );

			_modifySelectInput( jsonData, 'term', attributes );
			if ( select_id ) {
				setAttributes( {
					term: '',
				} );
			}
		} );
	}

	/**
	 * Modify the term dropdown.
	 * @param options
	 * @param key
	 * @param attributes
	 * @private
	 */
	function _modifySelectInput( options, key, attributes ) {
		const selectID = $( '.' + prefix + '-' + key + ' select' ),
		      oldValue = attributes[key] || '';
		selectID.empty();
		_updateSelectOptions( options, selectID, oldValue );
	}

	/**
	 * Update the select input with the new options.
	 * @param options
	 * @param selectID
	 * @param oldValue
	 * @private
	 */
	function _updateSelectOptions( options, selectID, oldValue ) {
		$.each( options, function ( key, value ) {
			const new_option = $( '<option />' )
				      .val( key ).text( value ),
			      method     = ! key ? 'prepend' : 'append';
			selectID.val( oldValue );
			selectID[method]( new_option );
		} );
	}

	DFIGBlockObject.params = typeof DisplayFeaturedImageBlock === 'undefined' ? '' : DisplayFeaturedImageBlock;

	if ( typeof DFIGBlockObject.params !== 'undefined' ) {
		Object.keys( DFIGBlockObject.params.blocks ).forEach( function ( key, index ) {
			if ( DFIGBlockObject.params.blocks.hasOwnProperty( key ) ) {
				DFIGBlockObject.init( DFIGBlockObject.params.blocks[ key ] );
			}
		} );
	}
} )( wp );