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/**
* WPForms Builder Dropdown List module.
*
* @since 1.8.4
*/
/*
Usage:
dropdownList = WPForms.Admin.Builder.DropdownList.init( {
class: 'insert-field-dropdown', // Additional CSS class.
title: 'Dropdown Title', // Dropdown title.
list: [ // Items list.
{ value: '1', text: 'Item 1' },
{ value: '2', text: 'Item 2' },
{ value: '3', text: 'Item 3' },
],
container: $( '.holder-container' ), // Holder container. Optional.
scrollableContainer: $( '.scrollable-container' ), // Scrollable container. Optional.
button: $( '.button' ), // Button.
buttonDistance: 21, // Distance from dropdown to the button.
itemFormat( item ) { // Item element renderer. Optional.
return `<span>${ item.text }</span>`;
},
onSelect( event, value, text, $item, instance ) { // On select event handler.
console.log( 'Item selected:', text );
instance.close();
$button.removeClass( 'active' );
},
} );
*/
var WPForms = window.WPForms || {}; // eslint-disable-line no-var
WPForms.Admin = WPForms.Admin || {};
WPForms.Admin.Builder = WPForms.Admin.Builder || {};
WPForms.Admin.Builder.DropdownList = WPForms.Admin.Builder.DropdownList || ( function( document, window, $ ) {
/**
* DropdownList object constructor.
*
* @since 1.8.4
*
* @type {Object}
*/
function DropdownList( options ) { // eslint-disable-line max-lines-per-function
const self = this;
/**
* Default options.
*
* @since 1.8.4
*
* @type {Object}
*/
const defaultOptions = {
class: '',
title: '',
list: [],
container: null,
scrollableContainer: null,
button: null,
buttonDistance: 10,
onSelect: null,
itemFormat( item ) {
return item.text;
},
};
/**
* Options.
*
* @since 1.8.4
*
* @type {jQuery}
*/
self.options = $.extend( defaultOptions, options );
/**
* Main dropdown container.
*
* @since 1.8.4
*
* @type {jQuery}
*/
self.$el = null;
/**
* Form builder container.
*
* @since 1.8.4
*
* @type {jQuery}
*/
self.$builder = $( '#wpforms-builder' );
/**
* Close the dropdown.
*
* @since 1.8.4
*/
self.close = function() {
self.$el.addClass( 'closed' );
};
/**
* Open the dropdown.
*
* @since 1.8.4
*/
self.open = function() {
self.$el.removeClass( 'closed' );
self.setPosition();
// Close dropdown on click outside.
self.$builder.on( 'click.DropdowmList', function( e ) {
const $target = $( e.target );
if ( $target.closest( self.$el ).length || $target.hasClass( 'button-insert-field' ) ) {
return;
}
self.$builder.off( 'click.DropdowmList' );
const $button = $( self.options.button );
if ( $button.hasClass( 'active' ) ) {
$button.trigger( 'click' );
}
} );
};
/**
* Generate the dropdown HTML.
*
* @since 1.8.4
*
* @return {string} HTML.
*/
self.generateHtml = function() {
const list = self.options.list;
if ( ! list || list.length === 0 ) {
return '';
}
const itemFormat = typeof self.options.itemFormat === 'function' ? self.options.itemFormat : defaultOptions.itemFormat;
// Generate HTML.
const items = [];
for ( const i in list ) {
items.push( `<li data-value="${ list[ i ].value }">${ itemFormat( list[ i ] ) }</li>` );
}
return `<div class="wpforms-builder-dropdown-list closed ${ self.options.class }">
<div class="title">${ self.options.title }</div>
<ul>${ items.join( '' ) }</ul>
</div>`;
};
/**
* Attach dropdown to DOM.
*
* @since 1.8.4
*/
self.attach = function() {
const html = self.generateHtml();
// Remove old dropdown.
if ( self.$el && self.$el.length ) {
self.$el.remove();
}
// Create jQuery objects.
self.$el = $( html );
self.$button = $( self.options.button );
self.$container = self.options.container ? $( self.options.container ) : self.$button.parent();
self.$scrollableContainer = self.options.scrollableContainer ? $( self.options.scrollableContainer ) : null;
// Add the dropdown to the container.
self.$container.append( self.$el );
self.setPosition();
};
/**
* Set dropdown position.
*
* @since 1.8.4
*/
self.setPosition = function() {
// Calculate position.
const buttonOffset = self.$button.offset(),
containerOffset = self.$container.offset(),
containerPosition = self.$container.position(),
dropdownHeight = self.$el.height(),
scrollTop = self.$scrollableContainer ? self.$scrollableContainer.scrollTop() : 0;
let top = buttonOffset.top - containerOffset.top - dropdownHeight - self.options.buttonDistance;
// In the case of the dropdown doesn't fit into the scrollable container to top, it is needed to open the dropdown to the bottom.
if ( scrollTop + containerPosition.top - dropdownHeight < 0 ) {
top = buttonOffset.top - containerOffset.top + self.$button.height() + self.options.buttonDistance - 11;
}
self.$el.css( 'top', top );
// The dropdown is outside the field options, it is needed to set `left` positioning value.
if ( self.$container.closest( '.wpforms-field-option' ).length === 0 ) {
self.$el.css( 'left', buttonOffset.left - containerOffset.left );
}
};
/**
* Events.
*
* @since 1.8.4
*/
self.events = function() {
// Click (select) the item.
self.$el.find( 'li' ).off()
.on( 'click', function( event ) {
// Bail if callback is not a function.
if ( typeof self.options.onSelect !== 'function' ) {
return;
}
const $item = $( this );
self.options.onSelect( event, $item.data( 'value' ), $item.text(), $item, self );
} );
};
/**
* Initialize.
*
* @since 1.8.4
*
* @param {Array} list List of items.
*/
self.init = function( list = null ) {
self.options.list = list ? list : self.options.list;
self.attach();
self.events();
self.$button.data( 'dropdown-list', self );
};
/**
* Destroy.
*
* @since 1.8.4
*/
self.destroy = function() {
self.$button.data( 'dropdown-list', null );
self.$el.remove();
};
// Initialize.
self.init();
}
/**
* Public functions and properties.
*
* @since 1.8.4
*
* @type {Object}
*/
return {
/**
* Start the engine. DOM is not ready yet, use only to init something.
*
* @since 1.8.4
*
* @param {Object} options Options.
*
* @return {Object} DropdownList instance.
*/
init( options ) {
return new DropdownList( options );
},
};
}( document, window, jQuery ) );