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282 lines
8.0 KiB
282 lines
8.0 KiB
( function ( $, rwmb ) {
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'use strict';
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// Object holds all methods related to fields' index when clone
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var cloneIndex = {
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/**
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* Set index for fields in a .rwmb-clone
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* @param $inputs .rwmb-clone element
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* @param index Index value
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*/
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set: function ( $inputs, index ) {
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$inputs.each( function () {
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var $field = $( this );
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// Name attribute
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var name = this.name;
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if ( name && ! $field.closest( '.rwmb-group-clone' ).length ) {
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$field.attr( 'name', cloneIndex.replace( index, name, '[', ']', false ) );
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}
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// ID attribute
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var id = this.id;
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if ( id ) {
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$field.attr( 'id', cloneIndex.replace( index, id, '_', '', true, true ) );
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}
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$field.trigger( 'update_index', index );
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} );
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},
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/**
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* Replace an attribute of a field with updated index
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* @param index New index value
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* @param value Attribute value
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* @param before String before returned value
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* @param after String after returned value
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* @param alternative Check if attribute does not contain any integer, will reset the attribute?
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* @param isEnd Check if we find string at the end?
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* @return string
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*/
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replace: function ( index, value, before, after, alternative, isEnd ) {
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before = before || '';
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after = after || '';
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if ( typeof alternative === 'undefined' ) {
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alternative = true;
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}
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var end = isEnd ? '$' : '';
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var regex = new RegExp( cloneIndex.escapeRegex( before ) + '(\\d+)' + cloneIndex.escapeRegex( after ) + end ),
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newValue = before + index + after;
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return regex.test( value ) ? value.replace( regex, newValue ) : (alternative ? value + newValue : value );
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},
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/**
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* Helper function to escape string in regular expression
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* @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
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* @param string
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* @return string
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*/
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escapeRegex: function ( string ) {
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return string.replace( /[.*+?^${}()|[\]\\]/g, "\\$&" );
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},
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/**
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* Helper function to create next index for clones
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* @param $container .rwmb-input container
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* @return integer
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*/
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nextIndex: function ( $container ) {
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var nextIndex = $container.data( 'next-index' );
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// If we render cloneable fields via AJAX, the mb_ready event is not fired.
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// so nextIndex is undefined. In this case, we get the next index from the number of existing clones.
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if ( nextIndex === undefined ) {
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nextIndex = $container.children( '.rwmb-clone' ).length;
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}
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$container.data( 'next-index', nextIndex + 1 );
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return nextIndex;
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}
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};
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// Object holds all method related to fields' value when clone.
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var cloneValue = {
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setDefault: function() {
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var $field = $( this );
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if ( true !== $field.data( 'clone-default' ) ) {
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return;
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}
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var type = $field.attr( 'type' ),
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defaultValue = $field.data( 'default' );
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if ( 'radio' === type ) {
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$field.prop( 'checked', $field.val() === defaultValue );
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} else if ( $field.hasClass( 'rwmb-checkbox' ) || $field.hasClass( 'rwmb-switch' ) ) {
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$field.prop( 'checked', !! defaultValue );
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} else if ( $field.hasClass( 'rwmb-checkbox_list' ) ) {
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var value = $field.val();
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$field.prop( 'checked', Array.isArray( defaultValue ) ? -1 !== defaultValue.indexOf( value ) : value == defaultValue );
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} else if ( $field.is( 'select' ) ) {
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$field.find( 'option[value="' + defaultValue + '"]' ).prop( 'selected', true );
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} else if ( ! $field.hasClass( 'rwmb-hidden' ) ) {
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$field.val( defaultValue );
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}
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},
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clear: function() {
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const $field = $( this ),
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type = $field.attr( 'type' );
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if ( 'radio' === type || 'checkbox' === type ) {
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$field.prop( 'checked', false );
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} else if ( $field.is( 'select' ) ) {
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$field.prop( 'selectedIndex', 0 );
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} else if ( ! $field.hasClass( 'rwmb-hidden' ) ) {
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$field.val( '' );
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}
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}
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};
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/**
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* Clone fields
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* @param $container A div container which has all fields
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*/
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function clone( $container ) {
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var $last = $container.children( '.rwmb-clone' ).last(),
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$clone = $last.clone(),
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nextIndex = cloneIndex.nextIndex( $container );
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// Clear fields' values.
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var $inputs = $clone.find( rwmb.inputSelectors );
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$inputs.each( cloneValue.clear );
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// Remove validation errors.
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$clone.find( 'p.rwmb-error' ).remove();
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// Insert clone.
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$clone.insertAfter( $last );
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// Trigger custom event for the clone instance. Required for Group extension to update sub fields.
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$clone.trigger( 'clone_instance', nextIndex );
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// Set fields index. Must run before trigger clone event.
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cloneIndex.set( $inputs, nextIndex );
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// Set fields' default values: do after index is set to prevent previous radio fields from unchecking.
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$inputs.each( cloneValue.setDefault );
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// Trigger custom clone event.
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$inputs.trigger( 'clone', nextIndex );
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// After cloning fields.
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$inputs.trigger( 'after_clone', nextIndex );
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// Trigger custom change event for MB Blocks to update block attributes.
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$inputs.first().trigger( 'mb_change' );
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}
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/**
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* Hide remove buttons when there's only 1 of them
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*
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* @param $container .rwmb-input container
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*/
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function toggleRemoveButtons( $container ) {
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var $clones = $container.children( '.rwmb-clone' ),
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minClone = 1;
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if ( $container.data( 'min-clone' ) ) {
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minClone = parseInt( $container.data( 'min-clone' ) );
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}
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$clones.children( '.remove-clone' ).toggle( $clones.length > minClone );
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// Recursive for nested groups.
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$container.find( '.rwmb-input' ).each( function () {
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toggleRemoveButtons( $( this ) );
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} );
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}
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/**
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* Toggle add button
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* Used with [data-max-clone] attribute. When max clone is reached, the add button is hid and vice versa
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*
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* @param $container .rwmb-input container
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*/
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function toggleAddButton( $container ) {
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var $button = $container.children( '.add-clone' ),
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maxClone = parseInt( $container.data( 'max-clone' ) ),
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numClone = $container.children( '.rwmb-clone' ).length;
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$button.toggle( isNaN( maxClone ) || ( maxClone && numClone < maxClone ) );
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}
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function addClone( e ) {
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e.preventDefault();
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var $container = $( this ).closest( '.rwmb-input' );
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clone( $container );
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toggleRemoveButtons( $container );
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toggleAddButton( $container );
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sortClones.apply( $container[0] );
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}
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function removeClone( e ) {
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e.preventDefault();
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var $this = $( this ),
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$container = $this.closest( '.rwmb-input' );
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// Remove clone only if there are 2 or more of them
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if ( $container.children( '.rwmb-clone' ).length < 2 ) {
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return;
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}
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$this.parent().trigger( 'remove' ).remove();
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toggleRemoveButtons( $container );
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toggleAddButton( $container );
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// Trigger custom change event for MB Blocks to update block attributes.
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$container.find( rwmb.inputSelectors ).first().trigger( 'mb_change' );
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}
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/**
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* Sort clones.
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* Expect this = .rwmb-input element.
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*/
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function sortClones() {
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var $container = $( this );
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if ( undefined !== $container.sortable( 'instance' ) ) {
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return;
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}
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if ( 0 === $container.children( '.rwmb-clone' ).length ) {
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return;
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}
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$container.sortable( {
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handle: '.rwmb-clone-icon',
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placeholder: ' rwmb-clone rwmb-sortable-placeholder',
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items: '> .rwmb-clone',
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start: function ( event, ui ) {
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// Make the placeholder has the same height as dragged item
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ui.placeholder.height( ui.item.outerHeight() );
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},
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stop: function( event, ui ) {
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ui.item.trigger( 'mb_init_editors' );
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ui.item.find( rwmb.inputSelectors ).first().trigger( 'mb_change' );
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}
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} );
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}
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function start() {
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var $container = $( this );
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toggleRemoveButtons( $container );
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toggleAddButton( $container );
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$container.data( 'next-index', $container.children( '.rwmb-clone' ).length );
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sortClones.apply( this );
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}
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function init( e ) {
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$( e.target ).find( '.rwmb-input' ).each( start );
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}
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rwmb.$document
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.on( 'mb_ready', init )
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.on( 'click', '.add-clone', addClone )
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.on( 'click', '.remove-clone', removeClone );
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// Export for use outside.
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rwmb.cloneIndex = cloneIndex;
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rwmb.cloneValue = cloneValue;
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rwmb.sortClones = sortClones;
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rwmb.toggleRemoveButtons = toggleRemoveButtons;
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rwmb.toggleAddButton = toggleAddButton;
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} )( jQuery, rwmb );
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