<?php

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/**

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* Base panel class.

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*

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* @since 1.0.0

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*/

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abstract class WPForms_Builder_Panel {

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/**

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* Full name of the panel.

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*

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* @since 1.0.0

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*

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* @var string

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*/

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public $name;

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/**

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* Slug.

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*

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* @since 1.0.0

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*

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* @var string

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*/

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public $slug;

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/**

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* Font Awesome Icon used for the editor button, eg "fa-list".

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*

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* @since 1.0.0

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*

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* @var mixed

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*/

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public $icon = false;

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/**

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* Priority order the field button should show inside the "Add Fields" tab.

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*

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* @since 1.0.0

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*

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* @var int

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*/

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public $order = 50;

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/**

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* If panel contains a sidebar element or is full width.

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*

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* @since 1.0.0

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*

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* @var bool

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*/

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public $sidebar = false;

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/**

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* Determine whether the panel content will be loaded on demand.

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*

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* @since 1.8.6

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*

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* @var bool

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*/

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public $on_demand = false;

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/**

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* Contain form object if we have one.

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*

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* @since 1.0.0

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*

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* @var object

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*/

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public $form;

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/**

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* Contain array of the form data (post_content).

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*

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* @since 1.0.0

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*

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* @var array

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*/

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public $form_data;

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/**

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* Class instance.

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*

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* @since 1.7.7

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*

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* @var static

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*/

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private static $instance;

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/**

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* Primary class constructor.

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*

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* @since 1.0.0

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*/

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public function __construct() {

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// Load form if found.

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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$form_id = isset( $_GET['form_id'] ) ? absint( $_GET['form_id'] ) : false;

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$this->form = wpforms()->get( 'form' )->get( $form_id );

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$this->form_data = $this->form ? wpforms_decode( $this->form->post_content ) : false;

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// Get current revision, if available.

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$revision = wpforms()->get( 'revisions' )->get_revision();

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// If we're viewing a valid revision, replace the form data so the Form Builder shows correct state.

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if ( $revision && isset( $revision->post_content ) ) {

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$this->form_data = wpforms_decode( $revision->post_content );

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}

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// Bootstrap.

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$this->init();

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// Save instance.

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self::$instance = $this;

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// Primary panel button.

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add_action( 'wpforms_builder_panel_buttons', [ $this, 'button' ], $this->order, 2 );

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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$is_active = $this->slug === sanitize_key( $_GET['view'] ?? 'setup' );

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if ( $this->on_demand && ! $is_active ) {

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// Load panel loader enqueues.

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add_action( 'admin_enqueue_scripts', [ $this, 'enqueues_loader' ] );

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}

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// Load panel specific enqueues.

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add_action( 'admin_enqueue_scripts', [ $this, 'enqueues' ], 15 );

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if ( $is_active || ! $this->on_demand ) {

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// Output.

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add_action( 'wpforms_builder_panels', [ $this, 'panel_output' ], $this->order, 2 );

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}

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}

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/**

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* Get class instance.

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*

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* @since 1.7.7

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*

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* @return static

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*/

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public static function instance() {

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if ( self::$instance === null || ! self::$instance instanceof static ) {

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self::$instance = new static();

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}

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return self::$instance;

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}

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/**

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* All systems go. Used by children.

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*

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* @since 1.0.0

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*/

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public function init() {

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}

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/**

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* Enqueue assets for the builder. Used by children.

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*

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* @since 1.0.0

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*/

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public function enqueues() {

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}

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/**

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* Enqueue panel loader assets.

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*

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* @since 1.8.6

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*/

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public function enqueues_loader() {

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$min = wpforms_get_min_suffix();

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wp_enqueue_script(

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'wpforms-builder-panel-loader',

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WPFORMS_PLUGIN_URL . "assets/js/admin/builder/panel-loader{$min}.js",

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[ 'wpforms-builder' ],

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WPFORMS_VERSION,

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true

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);

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}

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/**

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* Primary panel button in the left panel navigation.

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*

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* @since 1.0.0

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*

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* @param mixed $form

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* @param string $view

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*/

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public function button( $form, $view ) {

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$active = $view === $this->slug ? 'active' : '';

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?>

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<button class="wpforms-panel-<?php echo esc_attr( $this->slug ); ?>-button <?php echo $active; ?>" data-panel="<?php echo esc_attr( $this->slug ); ?>">

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<i class="fa <?php echo esc_attr( $this->icon ); ?>"></i>

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<span><?php echo esc_html( $this->name ); ?></span>

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</button>

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<?php

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}

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/**

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* Output the contents of the panel.

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*

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* @since 1.0.0

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*

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* @param object $form Current form object.

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* @param string $view Active Form Builder view (panel).

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*/

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public function panel_output( $form, $view ) {

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$wrap = $this->sidebar ? 'wpforms-panel-sidebar-content' : 'wpforms-panel-full-content';

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$classes = [ 'wpforms-panel' ];

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if ( in_array( $this->slug, [ 'fields', 'revisions' ], true ) ) {

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$classes[] = 'wpforms-panel-fields';

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}

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if ( $view === $this->slug ) {

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$classes[] = 'active';

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}

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printf( '<div class="%s" id="wpforms-panel-%s">', wpforms_sanitize_classes( $classes, true ), esc_attr( $this->slug ) );

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printf( '<div class="%s">', $wrap );

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if ( true === $this->sidebar ) {

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if ( $this->slug === 'fields' ) {

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echo '<div class="wpforms-panel-sidebar-toggle"><div class="wpforms-panel-sidebar-toggle-vertical-line"></div><div class="wpforms-panel-sidebar-toggle-icon"><i class="fa fa-angle-left"></i></div></div>';

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}

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echo '<div class="wpforms-panel-sidebar">';

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do_action( 'wpforms_builder_before_panel_sidebar', $this->form, $this->slug );

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$this->panel_sidebar();

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do_action( 'wpforms_builder_after_panel_sidebar', $this->form, $this->slug );

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echo '</div>';

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}

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echo '<div class="wpforms-panel-content-wrap">';

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echo '<div class="wpforms-panel-content">';

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do_action( 'wpforms_builder_before_panel_content', $this->form, $this->slug );

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$this->panel_content();

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do_action( 'wpforms_builder_after_panel_content', $this->form, $this->slug );

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echo '</div>';

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echo '</div>';

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echo '</div>';

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echo '</div>';

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}

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/**

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* Output the panel's sidebar if we have one.

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*

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* @since 1.0.0

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*/

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public function panel_sidebar() {

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}

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/**

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* Output panel sidebar sections.

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*

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* @since 1.0.0

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*

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* @param string $name Sidebar section name.

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* @param string $slug Sidebar section slug.

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* @param string $icon Sidebar section icon.

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*/

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public function panel_sidebar_section( $name, $slug, $icon = '' ) {

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$default_classes = [

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'wpforms-panel-sidebar-section',

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'wpforms-panel-sidebar-section-' . $slug,

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];

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if ( $slug === 'default' ) {

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$default_classes[] = 'default';

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}

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if ( ! empty( $icon ) ) {

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$default_classes[] = 'icon';

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}

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/**

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* Allow adding custom CSS classes to a sidebar section in the Form Builder.

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*

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* @since 1.7.7.2

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*

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* @param array $classes Sidebar section classes.

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* @param string $name Sidebar section name.

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* @param string $slug Sidebar section slug.

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* @param string $icon Sidebar section icon.

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*/

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$classes = (array) apply_filters( 'wpforms_builder_panel_sidebar_section_classes', [], $name, $slug, $icon );

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$classes = array_merge( $default_classes, $classes );

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echo '<a href="#" class="' . wpforms_sanitize_classes( $classes, true ) . '" data-section="' . esc_attr( $slug ) . '">';

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if ( ! empty( $icon ) ) {

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echo '<img src="' . esc_url( $icon ) . '">';

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}

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echo esc_html( $name );

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echo '<i class="fa fa-angle-right wpforms-toggle-arrow"></i>';

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echo '</a>';

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}

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/**

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* Output the panel's primary content.

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*

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* @since 1.0.0

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*/

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public function panel_content() {

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}

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}

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