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/* global wpforms_builder, WPFormsBuilder, WPFormsUtils */
/**
* @param wpforms_builder.field_cannot_be_reordered
*/
// noinspection ES6ConvertVarToLetConst
/**
* Form Builder Fields Drag-n-Drop module.
*
* @since 1.7.7
*/
var WPForms = window.WPForms || {}; // eslint-disable-line no-var
WPForms.Admin = WPForms.Admin || {};
WPForms.Admin.Builder = WPForms.Admin.Builder || {};
WPForms.Admin.Builder.DragFields = WPForms.Admin.Builder.DragFields || ( function( document, window, $ ) {
/**
* Elements holder.
*
* @since 1.7.7
*
* @type {Object}
*/
let el = {};
/**
* Runtime variables.
*
* @since 1.7.7
*
* @type {Object}
*/
const vars = {};
/**
* Layout field functions wrapper.
*
* @since 1.7.7
*
* @type {Object}
*/
let fieldLayout; // eslint-disable-line prefer-const
/**
* Public functions and properties.
*
* @since 1.7.7
*
* @type {Object}
*/
const app = {
/**
* Start the engine.
*
* @since 1.7.7
*/
init() {
$( app.ready );
},
/**
* DOM is fully loaded.
*
* @since 1.7.7
*/
ready() {
app.setup();
app.initSortableFields();
app.events();
},
/**
* Setup. Prepare some variables.
*
* @since 1.7.7
*/
setup() {
// Cache DOM elements.
el = {
$builder: $( '#wpforms-builder' ),
$sortableFieldsWrap: $( '#wpforms-panel-fields .wpforms-field-wrap' ),
$addFieldsButtons: $( '.wpforms-add-fields-button' ).not( '.not-draggable' ).not( '.warning-modal' ).not( '.education-modal' ),
};
},
/**
* Bind events.
*
* @since 1.7.7
*/
events() {
el.$builder
.on( 'wpformsFieldDragToggle', app.fieldDragToggleEvent );
},
/**
* Disable drag & drop.
*
* @since 1.7.1
* @since 1.7.7 Moved from admin-builder.js.
*/
disableDragAndDrop() {
el.$addFieldsButtons.filter( '.ui-draggable' ).draggable( 'disable' );
el.$sortableFieldsWrap.sortable( 'disable' );
el.$sortableFieldsWrap.find( '.wpforms-layout-column.ui-sortable' ).sortable( 'disable' );
},
/**
* Enable drag & drop.
*
* @since 1.7.1
* @since 1.7.7 Moved from admin-builder.js.
*/
enableDragAndDrop() {
el.$addFieldsButtons.filter( '.ui-draggable' ).draggable( 'enable' );
el.$sortableFieldsWrap.sortable( 'enable' );
el.$sortableFieldsWrap.find( '.wpforms-layout-column.ui-sortable' ).sortable( 'enable' );
},
/**
* Show popup in case if field is not draggable, and cancel moving.
*
* @since 1.7.5
* @since 1.7.7 Moved from admin-builder.js.
*
* @param {jQuery} $field A field or list of fields.
* @param {boolean} showPopUp Whether the pop-up should be displayed on dragging attempt.
*/
fieldDragDisable( $field, showPopUp = true ) {
if ( $field.hasClass( 'ui-draggable-disabled' ) ) {
// noinspection JSUnresolvedReference
$field.draggable( 'enable' );
return;
}
let startTopPosition;
// noinspection JSUnresolvedReference
$field.draggable( {
revert: true,
axis: 'y',
delay: 100,
opacity: 1,
cursor: 'move',
start( event, ui ) {
startTopPosition = ui.position.top;
},
drag( event, ui ) {
if ( Math.abs( ui.position.top ) - Math.abs( startTopPosition ) > 15 ) {
if ( showPopUp ) {
app.youCantReorderFieldPopup();
}
return false;
}
},
} );
},
/**
* Allow field dragging.
*
* @since 1.7.5
* @since 1.7.7 Moved from admin-builder.js.
*
* @param {jQuery} $field A field or list of fields.
*/
fieldDragEnable( $field ) {
if ( $field.hasClass( 'ui-draggable' ) ) {
return;
}
// noinspection JSUnresolvedReference
$field.draggable( 'disable' );
},
/**
* Show the error message in the popup that you cannot reorder the field.
*
* @since 1.7.1
* @since 1.7.7 Moved from admin-builder.js.
*/
youCantReorderFieldPopup() {
$.confirm( {
title: wpforms_builder.heads_up,
content: wpforms_builder.field_cannot_be_reordered,
icon: 'fa fa-exclamation-circle',
type: 'red',
buttons: {
confirm: {
text: wpforms_builder.ok,
btnClass: 'btn-confirm',
keys: [ 'enter' ],
},
},
} );
},
/**
* Event handler for `wpformsFieldDragToggle` event.
*
* @since 1.7.7
*
* @param {Object} e Event object.
* @param {number|string} id Field ID.
*/
fieldDragToggleEvent( e, id ) {
const $field = $( `#wpforms-field-${ id }` );
if (
$field.hasClass( 'wpforms-field-not-draggable' ) ||
$field.hasClass( 'wpforms-field-stick' )
) {
app.fieldDragDisable( $field );
return;
}
app.fieldDragEnable( $field );
},
/**
* Initialize sortable fields in the builder form preview area.
*
* @since 1.7.7
*/
initSortableFields() {
app.initSortableContainer( el.$sortableFieldsWrap );
el.$builder.find( '.wpforms-layout-column' ).each( function() {
app.initSortableContainer( $( this ) );
} );
app.fieldDragDisable( $( '.wpforms-field-not-draggable, .wpforms-field-stick' ) );
app.initDraggableFields();
},
/**
* Initialize sortable container with fields.
*
* @since 1.7.7
*
* @param {jQuery} $sortable Container to make sortable.
*/
initSortableContainer( $sortable ) { // eslint-disable-line max-lines-per-function
const $fieldOptions = $( '#wpforms-field-options' );
const $scrollContainer = $( '#wpforms-panel-fields .wpforms-panel-content-wrap' );
let fieldId,
fieldType,
isNewField,
$fieldOption,
$prevFieldOption,
prevFieldId,
currentlyScrolling = false;
// noinspection JSUnresolvedReference
$sortable.sortable( {
items: '> .wpforms-field:not(.wpforms-field-stick):not(.no-fields-preview)',
connectWith: '.wpforms-field-wrap, .wpforms-layout-column',
delay: 100,
opacity: 1,
cursor: 'move',
cancel: '.wpforms-field-not-draggable',
placeholder: 'wpforms-field-drag-placeholder',
appendTo: '#wpforms-panel-fields',
zindex: 10000,
tolerance: 'pointer',
distance: 1,
start( e, ui ) {
fieldId = ui.item.data( 'field-id' );
fieldType = ui.item.data( 'field-type' );
isNewField = typeof fieldId === 'undefined';
$fieldOption = $( '#wpforms-field-option-' + fieldId );
vars.fieldReceived = false;
vars.fieldRejected = false;
vars.$sortableStart = $sortable;
vars.startPosition = ui.item.first().index();
el.$builder.trigger( 'wpformsFieldDragStart', [ fieldId ] );
},
beforeStop( e, ui ) {
if ( ! vars.glitchChange ) {
return;
}
// Before processing in the `stop` method, we need to perform the last check.
if ( ! fieldLayout.isFieldAllowedInColum( fieldType, ui.item.first().parent() ) ) {
vars.fieldRejected = true;
}
},
stop( e, ui ) { // eslint-disable-line complexity
const $field = ui.item.first();
ui.placeholder.removeClass( 'wpforms-field-drag-not-allowed' );
$field.removeClass( 'wpforms-field-drag-not-allowed' );
// Reject not allowed fields.
if ( vars.fieldRejected ) {
const $targetColumn = isNewField ? $sortable : $field.parent();
app.revertMoveFieldToColumn( $field );
el.$builder.trigger( 'wpformsFieldMoveRejected', [ $field, ui, $targetColumn ] );
return;
}
prevFieldId = $field.prev( '.wpforms-field, .wpforms-alert' ).data( 'field-id' );
$prevFieldOption = $( `#wpforms-field-option-${ prevFieldId }` );
if ( $prevFieldOption.length > 0 ) {
$prevFieldOption.after( $fieldOption );
} else {
$fieldOptions.prepend( $fieldOption );
}
// In the case of changing fields' order inside the same column,
// we just need to change the position of the field.
if ( ! isNewField && $field.closest( '.wpforms-layout-column' ).is( $sortable ) ) {
fieldLayout.positionFieldInColumn(
fieldId,
$field.index() - 1,
$sortable
);
}
const $layoutField = $field.closest( '.wpforms-field-layout, .wpforms-field-repeater' );
fieldLayout.fieldOptionsUpdate( null, fieldId );
fieldLayout.reorderLayoutFieldsOptions( $layoutField );
if ( ! isNewField ) {
$field
.removeClass( 'wpforms-field-dragging' )
.removeClass( 'wpforms-field-drag-over' );
}
$field.attr( 'style', '' );
el.$builder.trigger( 'wpformsFieldMove', ui );
vars.fieldReceived = false;
},
over( e, ui ) { // eslint-disable-line complexity
const $field = ui.item.first(),
$target = $( e.target ),
$placeholder = $target.find( '.wpforms-field-drag-placeholder' ),
isColumn = $target.hasClass( 'wpforms-layout-column' ),
helper = {
width: $target.outerWidth(),
height: $field.outerHeight(),
};
let targetClass = isColumn ? ' wpforms-field-drag-to-column' : '';
if ( isColumn ) {
const columnSize = $target.attr( 'class' ).match( /wpforms-layout-column-(\d+)/ )[ 1 ];
targetClass += ` wpforms-field-drag-to-column-${ columnSize }`;
}
fieldId = $field.data( 'field-id' );
fieldType = $field.data( 'field-type' ) || vars.fieldType;
isNewField = typeof fieldId === 'undefined';
// Adjust helper size according to the placeholder size.
$field
.addClass( 'wpforms-field-dragging' + targetClass );
if ( ! isColumn || ! fieldLayout.isLayoutBasedField( fieldType ) ) {
$field
.css( {
width: isColumn ? helper.width - 5 : helper.width,
height: 'auto',
} );
}
const placeholderHeight = isColumn ? 90 : helper.height;
// Adjust placeholder height according to the height of the helper.
$placeholder
.removeClass( 'wpforms-field-drag-not-allowed' )
.css( {
height: isNewField ? placeholderHeight + 18 : helper.height,
} );
// Drop to this place is not allowed.
if ( isColumn && ! fieldLayout.isFieldAllowedInColum( fieldType, $target ) ) {
$placeholder.addClass( 'wpforms-field-drag-not-allowed' );
$field.addClass( 'wpforms-field-drag-not-allowed' );
}
el.$builder.trigger( 'wpformsFieldDragOver', [ fieldId, $target ] );
// Skip if it is the existing field.
if ( ! isNewField ) {
return;
}
$field
.addClass( 'wpforms-field-drag-over' )
.removeClass( 'wpforms-field-drag-out' );
},
out( e, ui ) {
const $field = ui.item.first(),
// eslint-disable-next-line no-shadow
fieldId = $field.data( 'field-id' ),
// eslint-disable-next-line no-shadow
isNewField = typeof fieldId === 'undefined';
$field
.removeClass( 'wpforms-field-drag-not-allowed' )
.removeClass( function( index, className ) {
// Remove all classes starting with `wpforms-field-drag-to-column`.
return ( className.match( /wpforms-field-drag-to-column(-\d+|)/g ) || [] ).join( ' ' );
} );
if ( vars.fieldReceived ) {
$field.attr( 'style', '' );
return;
}
// Skip if it is the existing field.
if ( ! isNewField ) {
// Remove extra class from the parent layout field.
// Fixes disappearing of duplicate/delete field icons
// after moving the field outside the layout field.
$( ui.sender )
.closest( '.wpforms-field-layout, .wpforms-field-repeater' )
.removeClass( 'wpforms-field-child-hovered' );
return;
}
$field
.addClass( 'wpforms-field-drag-out' )
.removeClass( 'wpforms-field-drag-over' );
},
receive( e, ui ) { // eslint-disable-line complexity
const $field = $( ui.helper || ui.item );
fieldId = $field.data( 'field-id' );
fieldType = $field.data( 'field-type' ) || vars.fieldType;
// eslint-disable-next-line no-shadow
const isNewField = typeof fieldId === 'undefined',
isColumn = $sortable.hasClass( 'wpforms-layout-column' );
// Drop to this place is not allowed.
if (
isColumn &&
! fieldLayout.isFieldAllowedInColum( fieldType, $sortable )
) {
vars.fieldRejected = true;
return;
}
vars.fieldReceived = true;
$field.removeClass( 'wpforms-field-drag-over' );
// Move existing field.
if ( ! isNewField ) {
fieldLayout.receiveFieldToColumn(
fieldId,
ui.item.index() - 1,
$field.parent()
);
return;
}
// Add new field.
const position = $sortable.data( 'ui-sortable' ).currentItem.index();
$field
.addClass( 'wpforms-field-drag-over wpforms-field-drag-pending' )
.removeClass( 'wpforms-field-drag-out' )
.append( WPFormsBuilder.settings.spinnerInline )
.css( 'width', '100%' );
el.$builder.find( '.no-fields-preview' ).remove();
WPFormsBuilder.fieldAdd(
vars.fieldType,
{
position: isColumn ? position - 1 : position,
placeholder: $field,
$sortable,
}
);
vars.fieldType = undefined;
},
change( e, ui ) {
const $placeholderSortable = ui.placeholder.parent();
const $targetSortable = $( e.target );
vars.glitchChange = false;
// In some cases sortable widget display placeholder in wrong sortable instance.
// It's happens when you drag the field over/out the last column of the last Layout field.
if (
! $sortable.is( $placeholderSortable ) &&
$sortable.hasClass( 'wpforms-field-wrap' ) &&
$placeholderSortable.hasClass( 'wpforms-layout-column' )
) {
vars.glitchChange = true;
}
el.$builder.trigger( 'wpformsFieldDragChange', [ fieldId, $targetSortable ] );
},
sort( e ) {
if ( currentlyScrolling ) {
return;
}
const scrollAreaHeight = 50,
mouseYPosition = e.clientY,
containerOffset = $scrollContainer.offset(),
containerHeight = $scrollContainer.height(),
containerBottom = containerOffset.top + containerHeight;
let operator;
if (
mouseYPosition > containerOffset.top &&
mouseYPosition < ( containerOffset.top + scrollAreaHeight )
) {
operator = '-=';
} else if (
mouseYPosition > ( containerBottom - scrollAreaHeight ) &&
mouseYPosition < containerBottom
) {
operator = '+=';
} else {
return;
}
currentlyScrolling = true;
$scrollContainer.animate(
{
scrollTop: operator + ( containerHeight / 3 ) + 'px',
},
800,
function() {
currentlyScrolling = false;
}
);
},
} );
},
/**
* Initialize draggable fields buttons.
*
* @since 1.7.7
*/
initDraggableFields() {
el.$addFieldsButtons.draggable( {
connectToSortable: '.wpforms-field-wrap, .wpforms-layout-column',
delay: 200,
cancel: false,
scroll: false,
opacity: 1,
appendTo: '#wpforms-panel-fields',
zindex: 10000,
helper() {
const $this = $( this );
const $el = $( '<div class="wpforms-field-drag-out wpforms-field-drag">' );
vars.fieldType = $this.data( 'field-type' );
return $el.html( $this.html() );
},
start( e, ui ) {
const event = WPFormsUtils.triggerEvent(
el.$builder,
'wpformsFieldAddDragStart',
[ vars.fieldType, ui ]
);
// Allow callbacks on `wpformsFieldAddDragStart` to cancel dragging the field
// by triggering `event.preventDefault()`.
if ( event.isDefaultPrevented() ) {
return false;
}
},
stop( e, ui ) {
const event = WPFormsUtils.triggerEvent(
el.$builder,
'wpformsFieldAddDragStop',
[ vars.fieldType, ui ]
);
// Allow callbacks on `wpformsFieldAddDragStop` to cancel dragging the field
// by triggering `event.preventDefault()`.
if ( event.isDefaultPrevented() ) {
return false;
}
},
} );
},
/**
* Revert moving the field to the column.
*
* @since 1.7.7
*
* @param {jQuery} $field Field object.
*/
revertMoveFieldToColumn( $field ) {
const isNewField = $field.data( 'field-id' ) === undefined;
if ( isNewField ) {
// Remove the field.
$field.remove();
return;
}
// Restore existing field on the previous position.
$field = $field.detach();
const $fieldInStartPosition = vars.$sortableStart
.find( '> .wpforms-field' )
.eq( vars.startPosition );
$field
.removeClass( 'wpforms-field-dragging' )
.removeClass( 'wpforms-field-drag-over' )
.attr( 'style', '' );
if ( $fieldInStartPosition.length ) {
$fieldInStartPosition.before( $field );
return;
}
vars.$sortableStart.append( $field );
},
};
/**
* Layout field functions holder.
*
* @since 1.7.7
*
* @type {Object}
*/
fieldLayout = {
/**
* Position field in the column inside the Layout Field.
*
* @since 1.7.7
*
* @param {number} fieldId Field ID.
* @param {number} position The new position of the field inside the column.
* @param {jQuery} $sortable Sortable column container.
*/
positionFieldInColumn( fieldId, position, $sortable ) {
if ( ! WPForms.Admin.Builder.FieldLayout ) {
return;
}
WPForms.Admin.Builder.FieldLayout.positionFieldInColumn( fieldId, position, $sortable );
},
/**
* Receive field to column inside the Layout Field.
*
* @since 1.7.7
*
* @param {number} fieldId Field ID.
* @param {number} position Field position inside the column.
* @param {jQuery} $sortable Sortable column container.
*/
receiveFieldToColumn( fieldId, position, $sortable ) {
if ( ! WPForms.Admin.Builder.FieldLayout ) {
return;
}
WPForms.Admin.Builder.FieldLayout.receiveFieldToColumn( fieldId, position, $sortable );
},
/**
* Update field options according to the position of the field.
* Event `wpformsFieldOptionTabToggle` handler.
*
* @since 1.7.7
*
* @param {Event} e Event.
* @param {number} fieldId Field id.
*/
fieldOptionsUpdate( e, fieldId ) {
if ( ! WPForms.Admin.Builder.FieldLayout ) {
return;
}
WPForms.Admin.Builder.FieldLayout.fieldOptionsUpdate( e, fieldId );
},
/**
* Reorder fields options of the fields in columns.
* It is not critical, but it's better to keep some order in the `fields` data array.
*
* @since 1.7.7
*
* @param {jQuery} $layoutField Layout field object.
*/
reorderLayoutFieldsOptions( $layoutField ) {
if ( ! WPForms.Admin.Builder.FieldLayout ) {
return;
}
WPForms.Admin.Builder.FieldLayout.reorderLayoutFieldsOptions( $layoutField );
},
/**
* Whether the field type is allowed to be in column.
*
* @since 1.7.7
*
* @param {string} fieldType Field type to check.
* @param {jQuery} $targetColumn Target column element.
*
* @return {boolean} True if allowed.
*/
isFieldAllowedInColum( fieldType, $targetColumn ) {
if ( ! WPForms.Admin.Builder.FieldLayout ) {
return true;
}
const isAllowed = WPForms.Admin.Builder.FieldLayout.isFieldAllowedInColum( fieldType, $targetColumn );
/**
* Allows developers to determine whether the field is allowed to be dragged in column.
*
* @since 1.8.9
*
* @param {boolean} isAllowed Whether the field is allowed to be placed in the column.
* @param {string} fieldType Field type.
* @param {jQuery} $targetColumn Target column element.
*
* @return {boolean} True if allowed.
*/
return wp.hooks.applyFilters( 'wpforms.LayoutField.isFieldAllowedDragInColumn', isAllowed, fieldType, $targetColumn );
},
/**
* Determine whether the field type is a layout-based field.
*
* @since 1.8.9
*
* @param {string} fieldType Field type to check.
*
* @return {boolean} True if it is the Layout-based field.
*/
isLayoutBasedField( fieldType ) {
if ( ! WPForms.Admin.Builder.FieldLayout ) {
return false;
}
return WPForms.Admin.Builder.FieldLayout.isLayoutBasedField( fieldType );
},
};
// Provide access to public functions/properties.
return app;
}( document, window, jQuery ) );
// Initialize.
WPForms.Admin.Builder.DragFields.init();