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✏️ Editing: license-activation.php

<?php
	/**
	 * @package     Freemius
	 * @copyright   Copyright (c) 2015, Freemius, Inc.
	 * @license     https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3
	 * @since       1.1.9
	 */

if ( ! defined( 'ABSPATH' ) ) {
		exit;
	}

/**
     * @var array $VARS
     *
	 * @var Freemius $fs
	 */
	$fs           = freemius( $VARS['id'] );
	$slug         = $fs->get_slug();
    $unique_affix = $fs->get_unique_affix();

$cant_find_license_key_text = fs_text_inline( "Can't find your license key?", 'cant-find-license-key', $slug );
	$message_above_input_field  = fs_text_inline( 'Please enter the license key that you received in the email right after the purchase:', 'activate-license-message', $slug );
	$message_below_input_field  = '';

$header_title = $fs->is_free_plan() ?
		fs_text_inline( 'Activate License', 'activate-license', $slug ) :
		fs_text_inline( 'Update License', 'update-license', $slug );

if ( $fs->is_registered() ) {
		$activate_button_text = $header_title;
	} else {
		$message_below_input_field = sprintf(
			fs_text_inline( 'The %1$s will be periodically sending essential license data to %2$s to check for security and feature updates, and verify the validity of your license.', 'license-sync-disclaimer', $slug ),
			$fs->get_module_label( true ),
			"<b>{$fs->get_plugin_title()}</b>"
		);

$activate_button_text = fs_text_inline( 'Agree & Activate License', 'agree-activate-license', $slug );
	}

$license_key_text = fs_text_inline( 'License key', 'license-key' , $slug );

$is_network_activation   = (
        $fs->is_network_active() &&
        fs_is_network_admin() &&
        ! $fs->is_delegated_connection()
    );
    $network_activation_html = '';

$sites_details = array();
    if ( $is_network_activation ) {
        $all_sites = Freemius::get_sites();

$all_site_details          = array();
        $subsite_url_by_install_id = array();
        $install_url_by_install_id = array();

foreach ( $all_sites as $site ) {
            $site_details = $fs->get_site_info( $site );

if ( FS_Clone_Manager::instance()->is_temporary_duplicate_by_blog_id( $site_details['blog_id'] ) ) {
                continue;
            }

$blog_id = Freemius::get_site_blog_id( $site );
            $install = $fs->get_install_by_blog_id($blog_id);

if ( is_object( $install ) ) {
                if ( isset( $subsite_url_by_install_id[ $install->id ] ) ) {
                    $clone_subsite_url = $subsite_url_by_install_id[ $install->id ];
                    $clone_install_url = $install_url_by_install_id[ $install->id ];

if (
                        /**
                         * If we already have an install with the same URL as the subsite it's stored in, skip the current subsite. Otherwise, replace the existing install's data with the current subsite's install's data if the URLs match.
                         *
                         * @author Leo Fajardo (@leorw)
                         * @since 2.5.0
                         */
                        fs_strip_url_protocol( untrailingslashit( $clone_install_url ) ) === fs_strip_url_protocol( untrailingslashit( $clone_subsite_url ) ) ||
                        fs_strip_url_protocol( untrailingslashit( $install->url ) ) !== fs_strip_url_protocol( untrailingslashit( $site_details['url'] ) )
                    ) {
                        continue;
                    }
                }

if ( FS_Plugin_License::is_valid_id( $install->license_id ) ) {
                    $site_details['license_id'] = $install->license_id;
                }

$subsite_url_by_install_id[ $install->id ] = $site_details['url'];
                $install_url_by_install_id[ $install->id ] = $install->url;
            }

$all_site_details[] = $site_details;
        }

if ( $is_network_activation ) {
            $vars = array(
                'id'                  => $fs->get_id(),
                'sites'               => $all_site_details,
                'require_license_key' => true
            );

$network_activation_html = fs_get_template( 'partials/network-activation.php', $vars );
        }
    }

$premium_licenses   = $fs->get_available_premium_licenses();
    $available_licenses = array();
    foreach ( $premium_licenses as $premium_license ) {
        $activations_left = $premium_license->left();
        if ( ! ( $activations_left > 0 ) ) {
            continue;
        }

$available_licenses[ $activations_left . '_' . $premium_license->id ] = $premium_license;
    }

$total_available_licenses = count( $available_licenses );
    if ( $total_available_licenses > 0 ) {
        $license_input_html = <<< HTML
        <div class="fs-license-options-container">
            <table>
                <tbody>
                    <tr class="fs-available-license-key-container">
                        <td><input type="radio" name="license_type" value="available"></td>
                        <td>
HTML;

if ( $total_available_licenses > 1 ) {
            // Sort the licenses by number of activations left in descending order.
            krsort( $available_licenses );

$license_input_html .= '<select class="fs-licenses">';

/**
             * @var FS_Plugin_License $license
             */
            foreach ( $available_licenses as $license ) {
                $plan = $fs->_get_plan_by_id( $license->plan_id );

$label = sprintf(
                    "%s-Site %s License - %s",
                    ( 1 == $license->quota ?
                        'Single' :
                        ( $license->is_unlimited() ? 'Unlimited' : $license->quota )
                    ),
                    ( is_object( $plan ) ? $plan->title : '' ),
                    $license->get_html_escaped_masked_secret_key()
                );

$license_input_html .= "<option data-id='{$license->id}' value='{$license->id}' data-left='{$license->left()}'>{$label}</option>";
            }

$license_input_html .= '</select>';
        } else {
            $available_licenses = array_values( $available_licenses );

/**
             * @var FS_Plugin_License $available_license
             */
            $available_license  = $available_licenses[0];
            $value              = sprintf(
                "%s-Site %s License - %s",
                ( 1 == $available_license->quota ?
                    'Single' :
                    ( $available_license->is_unlimited() ? 'Unlimited' : $available_license->quota )
                ),
                $fs->_get_plan_by_id( $available_license->plan_id )->title,
                $available_license->get_html_escaped_masked_secret_key()
            );

$license_input_html .= <<< HTML
                <input
                    class="fs-available-license-key"
                    type="text"
                    value="{$value}"
                    data-id="{$available_license->id}"
                    data-left="{$available_license->left()}"
                    readonly />
HTML;
        }

$license_input_html .= <<< HTML
                        </td>
                    </tr>
                    <tr>
                        <td><input type="radio" name="license_type" value="other"></td>
                        <td class="fs-other-license-key-container">
                            <label for="other_license_key_{$unique_affix}">Other: </label>
                            <div>
                                <input id="other_license_key_{$unique_affix}" class="fs-license-key" type="text" placeholder="Enter license key" tabindex="1">
                            </div>
                        </td>
                    </tr>
                </tbody>
            </table>
        </div>
HTML;
    } else {
        $license_input_html = "<input class='fs-license-key' type='text' placeholder='{$license_key_text}' tabindex='1' />";
    }

$ownership_change_option_text = fs_text_inline( "Associate with the license owner's account.", 'associate-account-with-license-owner', $slug );
    $ownership_change_option_html = "<div class='ownership-change-option-container' style='display: none'><label><input type='checkbox' /> <strong>{$ownership_change_option_text}</strong></label></div>";

/**
	 * IMPORTANT:
	 *  DO NOT ADD MAXLENGTH OR LIMIT THE LICENSE KEY LENGTH SINCE
	 *  WE DO WANT TO ALLOW INPUT OF LONGER KEYS (E.G. WooCommerce Keys)
	 *  FOR MIGRATED MODULES.
	 */
	$modal_content_html = <<< HTML
	<div class="notice notice-error inline license-activation-message"><p></p></div>
	<p>{$message_above_input_field}</p>
	{$license_input_html}
	<a class="show-license-resend-modal show-license-resend-modal-{$fs->get_unique_affix()}" href="!#" tabindex="2">{$cant_find_license_key_text}</a>
	{$network_activation_html}
	<p>{$message_below_input_field}</p>
    {$ownership_change_option_html}
HTML;

/**
     * Handle the ownership change option if not an add-on or if no license yet is activated for the
     * parent product in case of an add-on.
     *
     * @author Leo Fajardo (@leorw)
     * @since 2.3.2
     */
	$is_user_change_supported = ( ! $fs->is_addon() || ! $fs->get_parent_instance()->has_active_valid_license() );

fs_enqueue_local_style( 'fs_dialog_boxes', '/admin/dialog-boxes.css' );
?>
<script type="text/javascript">
(function( $ ) {
	$( document ).ready(function() {
		var modalContentHtml = <?php echo json_encode($modal_content_html); ?>,
			modalHtml =
				'<div class="fs-modal fs-modal-license-activation fs-modal-license-activation-<?php echo $unique_affix ?>">'
				+ '	<div class="fs-modal-dialog">'
				+ '		<div class="fs-modal-header">'
				+ '		    <h4><?php echo esc_js($header_title) ?></h4>'
				+ '         <a href="!#" class="fs-close"><i class="dashicons dashicons-no" title="<?php echo esc_js( fs_text_x_inline( 'Dismiss', 'as close a window', 'dismiss', $slug ) ) ?>"></i></a>'
				+ '		</div>'
				+ '		<div class="fs-modal-body">'
				+ '			<div class="fs-modal-panel active">' + modalContentHtml + '</div>'
				+ '		</div>'
				+ '		<div class="fs-modal-footer">'
				+ '			<button class="button button-secondary button-close" tabindex="4"><?php fs_esc_js_echo_inline( 'Cancel', 'cancel', $slug ) ?></button>'
				+ '			<button class="button button-primary button-activate-license"  tabindex="3"><?php echo esc_js( $activate_button_text ) ?></button>'
				+ '		</div>'
				+ '	</div>'
				+ '</div>',
			$modal = $(modalHtml),
			$activateLicenseButton          = $modal.find('.button-activate-license'),
			$licenseKeyInput                = $modal.find( 'input.fs-license-key' ),
			$licenseActivationMessage       = $modal.find( '.license-activation-message' ),
            isNetworkActivation             = <?php echo $is_network_activation ? 'true' : 'false' ?>,
            isUserChangeSupported           = <?php echo $is_user_change_supported ? 'true' : 'false' ?>,
            isSingleSiteActivation          = false,
            $ownershipChangeOptionContainer = $modal.find( '.ownership-change-option-container' ),
            $body                           = $( 'body' );

$modal.appendTo( $body );

var
            $licensesDropdown    = $modal.find( '.fs-licenses' ),
            $licenseTypes        = $modal.find( 'input[type="radio"][name="license_type"]' ),
            $applyOnAllSites     = $modal.find( '.fs-apply-on-all-sites-checkbox' ),
            $sitesListContainer  = $modal.find( '.fs-sites-list-container' ),
            $availableLicenseKey = $modal.find( '.fs-available-license-key' ),
            $otherLicenseKey     = $modal.find( '#other_license_key_<?php echo $unique_affix ?>' ),
            $multisiteOptionsContainer = $modal.find( '.fs-multisite-options-container' ),
            $activationsLeft     = null,
            hasLicensesDropdown  = ( $licensesDropdown.length > 0 ),
            hasLicenseTypes      = ( $licenseTypes.length > 0 ),
            maxSitesListHeight   = null,
            totalSites           = <?php echo count( $sites_details ) ?>,
            singleBlogID         = null;

var
            previousLicenseKey  = null,
            otherLicenseOwnerID = null,
            /**
             * @author Leo Fajardo (@leorw)
             * @since 2.3.2
             */
            resetLoadingMode = function () {
                // Reset loading mode.
                $activateLicenseButton.text( <?php echo json_encode( $activate_button_text ) ?> );
                $activateLicenseButton.prop( 'disabled', false );
                $( document.body ).css( { 'cursor': 'auto' } );
                $( '.fs-loading' ).removeClass( 'fs-loading' );

console.log( 'resetLoadingMode - Primary button was enabled' );
            },
            /**
             * @author Leo Fajardo (@leorw)
             * @since 2.3.2
             */
            setLoadingMode = function () {
                $( document.body ).css( { 'cursor': 'wait' } );
            },
            /**
             * @author Leo Fajardo (@leorw)
             * @since 2.3.2
             */
            afterLicenseUserDataLoaded = function () {
                if (
                    false !== otherLicenseOwnerID &&
                    null !== otherLicenseOwnerID &&
                    otherLicenseOwnerID != <?php echo $fs->is_registered() ? $fs->get_user()->id : 'null' ?>
                ) {
                    $ownershipChangeOptionContainer.show();
                } else {
                    $ownershipChangeOptionContainer.hide();
                    $activateLicenseButton.focus();
                }
            },
            /**
             * @author Leo Fajardo (@leorw)
             * @since 2.3.2
             */
            fetchLicenseUserData = function () {
                var hideAndUncheckUserChangeCheckbox = ( ! isUserChangeSupported ),
                    otherLicenseKeyIsSelected      = isOtherLicenseKeySelected();

if ( ! hideAndUncheckUserChangeCheckbox ) {
                    // User change is supported only on the site level.
                    hideAndUncheckUserChangeCheckbox = ( isNetworkActivation || isSingleSiteActivation );
                }

if ( ! hideAndUncheckUserChangeCheckbox ) {
                    hideAndUncheckUserChangeCheckbox = ( hasLicenseTypes && ! otherLicenseKeyIsSelected );
                }

var licenseKey = $licenseKeyInput.val().trim();

if ( ! hideAndUncheckUserChangeCheckbox && otherLicenseKeyIsSelected ) {
                    hideAndUncheckUserChangeCheckbox = ( licenseKey.length < 32 );
                }

if ( licenseKey !== previousLicenseKey ) {
                    // If the license key has not been changed, keep the owner ID in order to prevent another API call.
                    otherLicenseOwnerID = null;
                }

if ( hideAndUncheckUserChangeCheckbox ) {
                    $ownershipChangeOptionContainer.hide().find( 'input' ).attr( 'checked', false );

return;
                }

if ( null !== otherLicenseOwnerID ) {
                    afterLicenseUserDataLoaded();
                    return;
                }

setLoadingMode();

$activateLicenseButton.addClass( 'fs-loading' );
                $activateLicenseButton.attr( 'disabled', 'disabled' );
                $activateLicenseButton.html( '<?php fs_esc_js_echo_inline( 'Please wait', 'please-wait', $slug ) ?>...' );

$.ajax( {
                    url    : <?php echo Freemius::ajax_url() ?>,
                    method : 'POST',
                    data   : {
                        action     : '<?php echo $fs->get_ajax_action( 'fetch_is_marketing_required_flag_value' ) ?>',
                        security   : '<?php echo $fs->get_ajax_security( 'fetch_is_marketing_required_flag_value' ) ?>',
                        license_key: licenseKey,
                        module_id  : '<?php echo $fs->get_id() ?>'
                    },
                    success: function ( result ) {
                        resetLoadingMode();

if ( result.success ) {
                            result = result.data;

// Cache license owner's ID.
                            otherLicenseOwnerID = result.license_owner_id;
                        }

afterLicenseUserDataLoaded();
                    }
                } );
            };

function registerEventHandlers() {
            var
                $otherLicenseKeyContainer = $modal.find( '.fs-other-license-key-container' );

if ( isNetworkActivation ) {
                $applyOnAllSites.click(function() {
                    var applyOnAllSites = $( this ).is( ':checked' );

$multisiteOptionsContainer.toggleClass( 'fs-apply-on-all-sites', applyOnAllSites );

showSites( ! applyOnAllSites );

if ( hasValidLicenseKey() && ( applyOnAllSites || hasSelectedSite() ) ) {
                        enableActivateLicenseButton();
                    } else {
                        disableActivateLicenseButton();
                    }
                });

$sitesListContainer.delegate( 'td:not(:first-child)', 'click', function() {
                    // If a site row is clicked, trigger a click on the checkbox.
                    $( this ).parent().find( 'td:first-child input' ).click();
                });

$sitesListContainer.delegate( 'input[type="checkbox"]', 'click', function() {
                    enableDisableSitesSelection();

if ( hasValidLicenseKey() && hasSelectedSite() ) {
                        enableActivateLicenseButton();
                    } else {
                        disableActivateLicenseButton();
                    }
                });
            }

if ( hasLicensesDropdown ) {
                $licensesDropdown.change(function() {
                    // When a license is selected, select the associated radio button.
                    $licenseTypes.filter( '[value="available"]' ).attr( 'checked', true );

if ( ! isNetworkActivation || $modal.hasClass( 'is-single-site-activation' ) ) {
                        enableActivateLicenseButton();
                        return true;
                    }

toggleActivationOnAllSites();
                })
            }

if ( hasLicenseTypes ) {
                $licenseTypes.change(function() {
                    var
                        licenseKey              = $modal.find( 'input.fs-license-key' ).val().trim(),
                        otherLicenseKeySelected = isOtherLicenseKeySelected();

if ( ( licenseKey.length > 0 || ( hasLicenseTypes && ! otherLicenseKeySelected ) ) &&
                        ( $modal.hasClass( 'is-single-site-activation' ) || ! isNetworkActivation || hasSelectedSite() )
                    ) {
                        /**
                         * If the "other" license is not empty or an available license is selected, enable the activate
                         * button.
                         *
                         * @author Leo Fajardo (@leorw)
                         */
                        enableActivateLicenseButton();
                    } else {
                        disableActivateLicenseButton();
                    }

if ( '' !== licenseKey ) {
                        fetchLicenseUserData();
                    }

if ( ! isNetworkActivation ) {
                        return;
                    }

if ( otherLicenseKeySelected ) {
                        $applyOnAllSites.attr( 'disabled', false );
                        enableDisableSitesSelection();
                        resetActivateLicenseCheckboxLabel();
                    } else if ( ! $modal.hasClass( 'is-single-site-activation' ) ) {
                        toggleActivationOnAllSites();
                    }
                });

if ( ! hasLicensesDropdown ) {
                    $availableLicenseKey.click(function() {
                        $licenseTypes.filter( '[value="available"]' ).click();
                    });
                }

$otherLicenseKeyContainer.click(function() {
                    $licenseTypes.filter( '[value="other"]' ).click();
                });
            }

$body.on( 'click', 'span.activate-license.<?php echo $unique_affix ?> a, .activate-license-trigger.<?php echo $unique_affix ?>', function (evt) {
				evt.preventDefault();

showModal( evt );
			});

var licenseTimeout = null;

/**
             * Disable activation button when license key is empty.
             *
             * @author Leo Fajardo (@leorw)
             * @since 2.3.2
             */
            $modal.on( 'keyup paste delete cut', 'input.fs-license-key', function () {
                clearTimeout(licenseTimeout);

licenseTimeout = setTimeout( function () {
                    var licenseKey = $licenseKeyInput.val().trim();

if ( licenseKey == previousLicenseKey ) {
                        afterLicenseUserDataLoaded();
                        return;
                    }

if ( '' === licenseKey ) {
                        disableActivateLicenseButton();
                        $ownershipChangeOptionContainer.hide();
                    } else {
                        enableActivateLicenseButton();

if ( 32 <= licenseKey.length ) {
                            fetchLicenseUserData();
                        } else {
                            $ownershipChangeOptionContainer.hide();
                        }
                    }

previousLicenseKey = licenseKey;
                }, 200 );
            } ).focus();

$modal.on('input propertychange', 'input.fs-license-key', function () {

var licenseKey = $(this).val().trim();

/**
				 * If license key is not empty, enable the license activation button.
				 */
				if ( licenseKey.length > 0 && ( $modal.hasClass( 'is-single-site-activation' ) || ! isNetworkActivation || hasSelectedSite() ) ) {
					enableActivateLicenseButton();
				}
			});

$modal.on( 'blur', 'input.fs-license-key', function( evt ) {
				var
                    licenseKey                  = $(this).val().trim(),
                    $focusedElement             = $( evt.relatedTarget ),
                    hasSelectedAvailableLicense = ( hasLicenseTypes && $focusedElement.parents( '.fs-available-license-key-container' ).length > 0 );

/**
                 * If license key is empty, disable the license activation button.
                 */
                if ( ( 0 === licenseKey.length && ( ! hasLicenseTypes || ! hasSelectedAvailableLicense ) ) ||
                   ( isNetworkActivation && ! hasSelectedSite() )
                ) {
                   disableActivateLicenseButton();
                }
			});

$modal.on('click', '.button-activate-license', function (evt) {
				evt.preventDefault();

if ($(this).hasClass('disabled')) {
					return;
				}

var licenseKey = '',
                    licenseID  = '';

if ( hasLicenseTypes ) {
				    if ( isOtherLicenseKeySelected() ) {
				        licenseKey = $otherLicenseKey.val();
                    } else {
				        if ( ! hasLicensesDropdown ) {
                            licenseID = $availableLicenseKey.data( 'id' ).toString();
                        } else {
                            licenseID = $licensesDropdown.val();
                        }
                    }
                } else {
                    licenseKey = $licenseKeyInput.val().trim();
                }

disableActivateLicenseButton();

if ( 0 === licenseID.length && 0 === licenseKey.length ) {
					return;
				}

var data = {
                    action     : '<?php echo $fs->get_ajax_action( 'activate_license' ) ?>',
                    security   : '<?php echo $fs->get_ajax_security( 'activate_license' ) ?>',
                    module_id  : '<?php echo $fs->get_id() ?>'
                };

if ( licenseID.length > 0 ) {
                    data.license_id = licenseID;
                } else {
                    data.license_key = licenseKey;
                }

if ( isNetworkActivation ) {
                    var
                        sites = [];

if ( null === singleBlogID ) {
                        var
                            applyOnAllSites = $applyOnAllSites.is( ':checked' );

$sitesListContainer.find( 'tr' ).each(function() {
                            var
                                $this       = $( this ),
                                includeSite = ( applyOnAllSites || $this.find( 'input' ).is( ':checked' ) );

if ( ! includeSite )
                                return;

var site = {
                                uid     : $this.find( '.uid' ).val(),
                                url     : $this.find( '.url' ).val(),
                                title   : $this.find( '.title' ).val(),
                                language: $this.find( '.language' ).val(),
                                blog_id : $this.find( '.blog-id' ).find( 'span' ).text()
                            };

sites.push( site );
                        });
                    } else {
                        data.blog_id = singleBlogID;
                    }

data.sites = sites;
                }

if ( $ownershipChangeOptionContainer.find( 'input:checked' ).length > 0 ) {
                    data.user_id = otherLicenseOwnerID;
                }

$.ajax({
					url: <?php echo Freemius::ajax_url() ?>,
					method: 'POST',
                    data: data,
					beforeSend: function () {
						$activateLicenseButton.text( '<?php fs_esc_js_echo_inline( 'Activating license', 'activating-license', $slug ) ?>...' );
					},
					success: function( result ) {
						var resultObj = $.parseJSON( result );
						if ( resultObj.success ) {
							closeModal();

// Redirect to the "Account" page and sync the license.
							window.location.href = resultObj.next_page;
						} else {
							showError( resultObj.error.message ? resultObj.error.message : resultObj.error );
							resetActivateLicenseButton();
						}
					}
				});
			});

// If the user has clicked outside the window, close the modal.
			$modal.on('click', '.fs-close, .button-secondary', function () {
				closeModal();
				return false;
			});
		}

registerEventHandlers();

$body.trigger('licenseActivationLoaded');

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         */
		function enableDisableSitesSelection() {
            var
                canApplyOnAllSites    = $applyOnAllSites.is( ':enabled' ),
                disableSitesSelection = null;

if ( ! canApplyOnAllSites ) {
                var
                    selectedSites         = $sitesListContainer.find( 'input[type="checkbox"]:checked' ).length,
                    activationsLeft       = Math.max( 0, $activationsLeft.data( 'left' ) - selectedSites );

disableSitesSelection = ( 0 === activationsLeft );

$activationsLeft.text( activationsLeft );
            } else {
                disableSitesSelection = false;
            }

$sitesListContainer
                .find( 'input[type="checkbox"]:not(:checked)' )
                .attr( 'disabled', disableSitesSelection );
        }

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         *
         * @returns {Boolean}
         */
        function isOtherLicenseKeySelected() {
            return ( hasLicenseTypes && 'other' === $licenseTypes.filter( ':checked' ).val() );
        }

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         *
         * @returns {Boolean}
         */
        function hasValidLicenseKey() {
            var licenseKey = '';
            if ( hasLicenseTypes ) {
                if ( 'available' === $licenseTypes.filter( ':checked' ).val() ) {
                    return true;
                } else {
                    licenseKey = $otherLicenseKey.val();
                }
            } else {
                licenseKey = $modal.find( 'input.fs-license-key' ).val();
            }

return ( licenseKey.trim().length > 0 );
        }

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         *
         * @returns {Boolean}
         */
        function hasSelectedSite() {
            return ( $applyOnAllSites.is( ':checked' ) ||
                $sitesListContainer.find( 'input[type="checkbox"]:checked:not(:disabled)' ).length > 0 );
        }

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         */
        function toggleActivationOnAllSites() {
            var activationsLeft,
                licenseID;

if (hasLicensesDropdown) {
                var $selectedOption = $licensesDropdown.find( ':selected' );
                activationsLeft = $selectedOption.data('left');
                licenseID = $selectedOption.data('id');
            } else {
                activationsLeft = $availableLicenseKey.data('left');
                licenseID = $availableLicenseKey.data('id');
            }

// Cleanup previously auto-selected site.
            $modal.find( '.fs-sites-list-container input[type=checkbox]:disabled' )
                .attr('disabled', false)
                .attr('checked', false);

var $blogsWithActiveLicense = $modal.find( '.fs-sites-list-container tr[data-license-id=' + licenseID + '] input[type=checkbox]' );

if ($blogsWithActiveLicense.length > 0) {
                $blogsWithActiveLicense.attr('checked', true)
                    .attr('disabled', true);

activationsLeft += $blogsWithActiveLicense.length;
            }

if ( activationsLeft >= totalSites ) {
                $applyOnAllSites.attr( 'disabled', false );
                enableDisableSitesSelection();

resetActivateLicenseCheckboxLabel();

return;
            }

$applyOnAllSites.attr( 'checked', false );
            $applyOnAllSites.attr( 'disabled', true );

showSites( true );

var
                activateLicenseCheckboxLabel = '<?php fs_esc_js_echo_inline( 'Choose up to %s site(s) to activate the license on.', 'choose-up-to-n-sites-to-activate-the-license-on', $slug ) ?>';

activateLicenseCheckboxLabel = activateLicenseCheckboxLabel.replace( '%s', '<span data-left="' + activationsLeft + '" class="activations-left">' + activationsLeft + '</span>' );

// Update the label of the "Activate license on all sites" checkbox.
            $applyOnAllSites.parent().find( 'span' ).html( activateLicenseCheckboxLabel );
            $activationsLeft = $modal.find( '.activations-left' );

if ( hasSelectedSite() ) {
                enableActivateLicenseButton();
                enableDisableSitesSelection();
            } else {
                disableActivateLicenseButton();
            }
        }

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         */
        function resetActivateLicenseCheckboxLabel() {
            var activateLicenseCheckboxLabel = '<?php fs_esc_js_echo_inline( 'Activate license on all sites in the network.', 'activate-license-on-all-sites-in-the-network', $slug ) ?>';
            $applyOnAllSites.parent().find( 'span' ).text( activateLicenseCheckboxLabel );
        }

/**
         * @author Leo Fajardo (@leorw)
         * @since 2.0.0
         *
         * @param {Boolean} show
         */
		function showSites( show ) {
            $sitesListContainer.toggle( show );
            if ( show && null === maxSitesListHeight ) {
                /**
                 * Set the visible number of rows to 5 (5 * height of the first row).
                 *
                 * @author Leo Fajardo (@leorw)
                 */
                maxSitesListHeight = ( 5 * $sitesListContainer.find( 'tr:first' ).height() );
                $sitesListContainer.css( 'max-height', maxSitesListHeight );
            }
        }

function showModal( evt ) {
			resetModal();

// Display the dialog box.
			$modal.addClass('active');
			$body.addClass('has-fs-modal');

var
                $singleInstallDetails  = $( evt.target ).parents( 'tr.fs-install-details' ),
                isSingleSiteActivation = ( $singleInstallDetails.length > 0 );

$modal.toggleClass( 'is-single-site-activation', isSingleSiteActivation );

singleBlogID = isSingleSiteActivation ?
                $singleInstallDetails.prev().data( 'blog-id' ) :
                null;

<?php if ( $fs->apply_filters( 'enable_per_site_activation', true ) ) : ?>
            $multisiteOptionsContainer.toggle( isNetworkActivation && ! isSingleSiteActivation );
            <?php endif ?>

if ( hasLicenseTypes ) {
                $licenseTypes.attr( 'checked', false );

if ( hasLicensesDropdown ) {
                    $licensesDropdown.find( 'option:first' ).attr( 'selected', true ).trigger( 'change' );
                } else {
                    $licenseTypes.filter( '[value="available"]' ).click();
                }

$otherLicenseKey.val( '' );
            } else {
                $licenseKeyInput.val( '' );
                $licenseKeyInput.focus();
            }
		}

function closeModal() {
			$modal.removeClass('active');
			$body.removeClass('has-fs-modal');
		}

function resetActivateLicenseButton() {
			enableActivateLicenseButton();
			$activateLicenseButton.text( <?php echo json_encode( $activate_button_text ) ?> );
		}

function resetModal() {
			hideError();
			resetActivateLicenseButton();
		}

function enableActivateLicenseButton() {
			$activateLicenseButton.removeClass( 'disabled' );
		}

function disableActivateLicenseButton() {
			$activateLicenseButton.addClass( 'disabled' );
		}

function hideError() {
			$licenseActivationMessage.hide();
		}

function showError( msg ) {
			$licenseActivationMessage.find( ' > p' ).html( msg );
			$licenseActivationMessage.show();
		}
	});
})( jQuery );
</script>
<?php
    fs_require_once_template( 'api-connectivity-message-js.php' );