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/* global wpforms_builder, wpf */

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/**

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* Form Builder Panel Loader module.

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* @since 1.8.6

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var WPForms = window.WPForms || {}; // eslint-disable-line no-var

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WPForms.Admin = WPForms.Admin || {};

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WPForms.Admin.Builder = WPForms.Admin.Builder || {};

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WPForms.Admin.Builder.PanelLoader = WPForms.Admin.Builder.PanelLoader || ( function( document, window, $ ) {

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/**

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* Elements holder.

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* @since 1.8.6

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* @type {Object}

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const el = {};

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/**

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* Runtime variables.

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* @since 1.8.6

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* @type {Object}

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const vars = [];

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/**

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* Public functions and properties.

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* @since 1.8.6

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* @type {Object}

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const app = {

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/**

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* Start the engine.

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* @since 1.8.6

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init() {

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$( app.ready );

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/**

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* DOM is fully loaded.

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* @since 1.8.6

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ready() {

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app.setup();

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app.events();

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el.$builder.trigger( 'wpformsBuilderLoaderReady' );

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/**

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* Setup. Prepare some variables.

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* @since 1.8.6

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setup() {

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// Cache DOM elements.

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el.$builder = $( '#wpforms-builder' );

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el.$form = $( '#wpforms-builder-form' );

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el.$panels = el.$builder.find( '.wpforms-panels' );

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// Init vars.

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vars.currentPanel = wpf.getQueryString( 'view' );

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/**

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* Bind events.

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* @since 1.8.6

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events() {

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// Panel switching.

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el.$builder.on( 'wpformsPanelSwitch', function( e, panel ) {

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// Skip if the panel is still loading.

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if ( el.$builder.find( `.wpforms-panel-${ panel }-button .wpforms-loading-spinner` ).length ) {

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e.preventDefault();

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return;

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}

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// Open the panel if it is already loaded.

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if ( el.$panels.find( '#wpforms-panel-' + panel ).length ) {

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return;

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}

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// Load panel.

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e.preventDefault();

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app.loadPanel( panel );

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} );

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/**

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* Load panel.

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* @since 1.8.6

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* @param {string} panel Panel name.

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loadPanel( panel ) {

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app.showSpinner( panel );

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// Load panel.

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$.post( wpforms_builder.ajax_url, {

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nonce: wpforms_builder.nonce,

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action: 'wpforms_builder_load_panel',

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panel,

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form_id: wpf.getQueryString( 'form_id' ), // eslint-disable-line camelcase

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} )

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.done( function( response ) {

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if ( ! response.success || ! response.data?.length ) {

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// Show an error message.

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app.displayErrorModal( `${ wpforms_builder.error_load_templates }${ wpforms_builder.error_contact_support }` );

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return;

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}

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// Append panel to the DOM.

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app.embedPanel( panel, response.data );

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// Finalize switching to the panel.

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app.switchPanel( panel );

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// Trigger panel loaded event.

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el.$builder.trigger( 'wpformsBuilderPanelLoaded', [ panel ] );

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} )

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.fail( function() {

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// Show an error message.

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app.displayErrorModal( `${ wpforms_builder.something_went_wrong }.${ wpforms_builder.error_contact_support }` );

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} )

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.always( function() {

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// Hide loading spinner.

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app.hideSpinner( panel );

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} );

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/**

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* Show spinner.

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* @since 1.8.6

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* @param {string} panel Panel name.

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showSpinner( panel ) {

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const $button = $( `.wpforms-panel-${ panel }-button` );

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$button.find( `i.fa` ).addClass( 'wpforms-hidden' );

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$button.prepend( '' );

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/**

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* Hide spinner.

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* @since 1.8.6

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* @param {string} panel Panel name.

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hideSpinner( panel ) {

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const $button = $( `.wpforms-panel-${ panel }-button` );

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$button.find( `i.fa` ).removeClass( 'wpforms-hidden' );

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$button.find( `i.wpforms-loading-spinner` ).remove();

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/**

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* Embed panel to DOM.

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* @since 1.8.6

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* @param {string} panel Panel slug.

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* @param {string} panelHtml Panel HTML.

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embedPanel( panel, panelHtml ) {

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// Append panel to the DOM.

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el.$panels.append( panelHtml );

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/**

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* Finalize switching to the panel.

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* @since 1.8.6

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* @param {string} panel Panel slug.

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switchPanel( panel ) {

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$( '#wpforms-panels-toggle' ).find( 'button' ).removeClass( 'active' );

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$( '.wpforms-panel' ).removeClass( 'active' );

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$( `.wpforms-panel-${ panel }-button` ).addClass( 'active' );

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$( `#wpforms-panel-${ panel }` ).addClass( 'active' );

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history.replaceState( {}, null, wpf.updateQueryString( 'view', panel ) );

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el.$builder.trigger( 'wpformsPanelSwitched', [ panel ] );

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/**

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* Display modal window with an error message.

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* @since 1.8.6

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* @param {string} content Modal content.

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displayErrorModal( content ) {

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$.alert( {

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title : wpforms_builder.uh_oh,

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content,

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icon : 'fa fa-exclamation-circle',

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type : 'red',

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buttons: {

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cancel: {

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text : wpforms_builder.close,

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btnClass: 'btn-confirm',

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keys : [ 'enter' ],

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} );

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};

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// Provide access to public functions/properties.

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return app;

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}( document, window, jQuery ) );

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// Initialize.

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WPForms.Admin.Builder.PanelLoader.init();

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