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<?php |
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/* |
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Plugin Name: Essential Form |
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Description: The lightest contact form for WordPress. So essential you'll either love it or hate it. Ultra lightweight and no spam. |
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Author: Jose Mortellaro |
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Author URI: https://josemortellaro.com/ |
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Domain Path: /languages/ |
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Text Domain: essential-form |
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Version: 0.0.8 |
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*/ |
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/* This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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*/ |
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defined( 'ABSPATH' ) || exit; // Exit if accessed directly. |
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|
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// Definitions. |
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define( 'ESSENTIAL_FORM_VERSION','0.0.8' ); |
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define( 'ESSENTIAL_FORM_PLUGIN_DIR', untrailingslashit( dirname( __FILE__ ) ) ); |
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define( 'ESSENTIAL_FORM_PLUGIN_URL', untrailingslashit( plugins_url( '', __FILE__ ) ) ); |
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define( 'ESSENTIAL_FORM_BASE_NAME', untrailingslashit( plugin_basename( __FILE__ ) ) ); |
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|
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$keys = essential_form_get_keys(); |
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if( $keys && is_array( $keys ) ){ |
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define( 'ESSENTIAL_FORM_AJAX_KEY','essential_form_'.sanitize_key( $keys[0] ) ); |
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} |
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|
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if( wp_doing_ajax() && defined( 'ESSENTIAL_FORM_AJAX_KEY' ) ){ |
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if( isset( $_REQUEST['action'] ) && in_array( sanitize_text_field( $_REQUEST['action'] ),apply_filters( 'essential_form_allowed_actions',array( 'essential_form_'.sanitize_key( $keys[0] ),'essential_form_'.sanitize_key( $keys[0] ).'_get_key' ) ) ) ){ |
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require_once ESSENTIAL_FORM_PLUGIN_DIR.'/inc/ef-ajax.php'; |
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} |
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} |
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elseif( is_admin() ){ |
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require_once ESSENTIAL_FORM_PLUGIN_DIR.'/admin/ef-admin.php'; |
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} |
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|
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// Actions triggered after plugin activation. |
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register_activation_hook( __FILE__,function( $networkwide ){ |
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require ESSENTIAL_FORM_PLUGIN_DIR.'/plugin-activation.php'; |
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} ); |
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|
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// Get options in case of single or multisite installation. |
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function essential_form_get_option( $option ){ |
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if( !is_multisite() ){ |
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return get_option( $option ); |
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} |
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else{ |
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return get_blog_option( get_current_blog_id(),$option ); |
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} |
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} |
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|
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// Update options in case of single or multisite installation. |
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function essential_form_update_option( $option,$newvalue,$autoload = false ){ |
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if( !is_multisite() ){ |
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return update_option( $option,$newvalue,$autoload ); |
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} |
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else{ |
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return update_blog_option( get_current_blog_id(),$option,$newvalue ); |
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} |
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} |
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|
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// Filtered settings. |
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function essential_form_filtered_settings(){ |
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$settings = array(); |
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$default_settings = essential_form_default_settings(); |
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$filtered = apply_filters( 'essential_form_settings',$default_settings ); |
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foreach( $default_settings as $key => $value ){ |
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$settings[$key] = isset( $filtered[$key] ) ? $filtered[$key] : $default_settings[$key]; |
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} |
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return $settings; |
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} |
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|
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// Default settings. |
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function essential_form_default_settings(){ |
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$privacy_page = (int) get_site_option( 'wp_page_for_privacy_policy' ); |
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if( function_exists( 'icl_object_id' ) ){ |
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$privacy_page_lang = icl_object_id( $privacy_page,'page', false,ICL_LANGUAGE_CODE ); |
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$privacy_page = $privacy_page_lang ? $privacy_page_lang : $privacy_page; |
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} |
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$url = get_permalink( $privacy_page ); |
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$url = $url ? $url : '#'; |
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return array( |
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'email_from' => get_bloginfo( 'admin_email' ), |
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'email_to' => get_bloginfo( 'admin_email' ), |
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'email_subject' => sprintf( esc_html__( 'Message from %s','essential-form' ),get_bloginfo( 'name' ) ), |
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'label_name' => __( 'Name','essential-form' ), |
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'label_email' => __( 'Email','essential-form' ), |
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'label_message' => __( 'Message','essential-form' ), |
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'button_text' => __( 'Send','essential-form' ), |
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'agreement_text' => sprintf( __( 'By submitting this form I agree with the %sprivacy policy%s','essential-form' ),'<a href="'.esc_url( $url ).'" target="_blank">','</a>' ), |
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'success_message' => __( 'Form submitted successfully! Thank you for your message!','essential-form' ), |
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'name_missing_error' => __( 'Name is a required field!','essential-form' ), |
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'email_missing_error' => __( 'Email is a required field!','essential-form' ), |
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'email_not_valid_error' => __( 'Email not valid!','essential-form' ), |
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'message_missing_error' => __( 'Message is a required field!','essential-form' ), |
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'message_too_long_error' => __( 'This message is too long! Please, write not more than 50000 characters.','essential-form' ), |
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'missing_agreement_error' => __( 'You have to agree with our privacy policy to submit the form.','essential-form' ) |
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); |
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} |
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|
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add_shortcode( 'essential_form',function( $atts ){ |
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//Form shortcode. |
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static $s = 0; |
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$opts = essential_form_get_option( 'essential_form' ); |
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if( isset( $opts['activation_keys'] ) ){ |
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do_action( 'essential_form_init' ); |
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global $post; |
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++$s; |
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$settings = essential_form_filtered_settings(); |
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extract( $settings ); |
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$label_name = isset( $atts['label_name'] ) ? sanitize_text_field( $atts['label_name'] ) : apply_filters( 'essential_form_label_name',$label_name ); |
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$label_email = isset( $atts['label_email'] ) ? sanitize_text_field( $atts['label_email'] ) : apply_filters( 'essential_form_label_email',$label_email ); |
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$label_message = isset( $atts['label_message'] ) ? sanitize_text_field( $atts['label_message'] ) : apply_filters( 'essential_form_label_message',$label_message ); |
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$button_text = isset( $atts['button_text'] ) ? sanitize_text_field( $atts['button_text'] ) : apply_filters( 'essential_form_button_text',$button_text ); |
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$agreement_text = isset( $atts['agreement_text'] ) ? wp_kses( $atts['agreement_text'],array( 'a' => array( 'href' => array(),'target' => array() ) ) ) : apply_filters( 'essential_form_agreement_text',$agreement_text ); |
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$success_message = isset( $atts['success_message'] ) ? sanitize_text_field( $atts['success_message'] ) : apply_filters( 'essential_form_success_message',$success_message ); |
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$keys = essential_form_get_keys(); |
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$output = '<style id="'.esc_attr( $keys[0] ).'-'.$s.'-css">'; |
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$output .= '.'.esc_attr( $keys[0] ).'-wrp .ef-error{border:1px solid red;padding:10px;margin-bottom:16px}'; |
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$output .= '.'.esc_attr( $keys[0] ).'-wrp .ef-success{border:1px solid green;padding:10px;margin-bottom:16px}'; |
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$output .= '.'.esc_attr( $keys[0] ).' input:not([type=checkbox]),.'.esc_attr( $keys[0] ).' textarea{width:100%}.'.esc_attr( $keys[0] ).' textarea{min-height:150px}.'.esc_attr( $keys[0] ).'>div{margin-bottom:16px}.'.esc_attr( $keys[0] ).' button{background-position:-999999px -9999999px !important}.'.esc_attr( $keys[0] ).'.ef-progress button{background-position:center !important;pointer-events:none !important}'; |
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$output .= '</style>'; |
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$output .= '<div id="fw-'.esc_attr( $keys[0] ).'-'.$s.'" class="'.esc_attr( $keys[0] ).'-wrp ef-ctrl-wrp">'; |
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$output .= '<div id="'.esc_attr( $keys[7] ).'-'.$s.'" style="display:none" class="ef-success">'.esc_html( $success_message ).'</div>'; |
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$output .= '<div id="'.esc_attr( $keys[8] ).'-'.$s.'" style="display:none" class="ef-error"></div>'; |
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$output .= '<form id="'.esc_attr( $keys[0] ).'-'.$s.'" class="'.esc_attr( $keys[0] ).'">'; |
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$output = apply_filters( 'essential_form_before_name', $output, $post, $settings, $atts ); |
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$output .= '<div class="ef-ctrl-wrp">'; |
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$output .= '<div><label for="'.esc_attr( $keys[1] ).'-'.$s.'">'.esc_html( $label_name ).'</label></div>'; |
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$output .= '<div><input type="text" id="'.esc_attr( $keys[1] ).'-'.$s.'" class="'.esc_attr( $keys[1] ).'" required /></div>'; |
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$output .= '</div>'; |
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$output = apply_filters( 'essential_form_after_name', $output, $post, $settings, $atts ); |
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$output .= '<div class="ef-ctrl-wrp">'; |
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$output .= '<div><label for="'.esc_attr( $keys[2] ).'-'.$s.'">'.esc_html( $label_email ).'</label></div>'; |
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$output .= '<div><input type="email" id="'.esc_attr( $keys[2] ).'-'.$s.'" class="'.esc_attr( $keys[2] ).'" required /></div>'; |
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$output .= '</div>'; |
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$output = apply_filters( 'essential_form_after_email', $output, $post, $settings, $atts ); |
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$output .= '<div class="ef-ctrl-wrp">'; |
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$output .= '<div><label for="'.esc_attr( $keys[3] ).'-'.$s.'">'.esc_html( $label_message ).'</label></div>'; |
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$output .= '<div><textarea id="'.esc_attr( $keys[3] ).'-'.$s.'" class="'.esc_attr( $keys[3] ).'" required></textarea></div>'; |
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$output .= '</div>'; |
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$output = apply_filters( 'essential_form_after_message', $output, $post, $settings, $atts ); |
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$checkbox_required = ''; |
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$checkbox_wrapper_style = ' style="display:none"'; |
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if( ! defined( 'ESSENTIAL_FORM_ASK_FOR_AGREEMENT' ) || ESSENTIAL_FORM_ASK_FOR_AGREEMENT ) { |
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$checkbox_required = ' ' . apply_filters( 'essential_form_agreement_checkbox_required', 'required' ); |
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$checkbox_wrapper_style = ''; |
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} |
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$checkbox_input_style = ' required' === $checkbox_required ? '' : ' style="display:none"'; |
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$output .= '<div' . $checkbox_wrapper_style . '><input' . $checkbox_input_style . ' type="checkbox" id="'.esc_attr( $keys[4] ).'-'.$s.'" class="'.esc_attr( $keys[4] ).'"' . $checkbox_required . ' value="on" /> '.wp_kses( $agreement_text ,array( 'a' => array( 'href' => array(),'target' => array() ) ) ).'</div>'; |
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$output = apply_filters( 'essential_form_after_checkbox', $output, $post, $settings, $atts ); |
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$output .= '<div><button id="'.esc_attr( $keys[3] ).'-'.$s.'" type="submit" class="button" style="background-size:22px 22px !important;background-repeat:no-repeat !important;background-image:url('.includes_url( '/images/spinner.gif' ).') !important" onclick="essential_form_'.sanitize_key( $keys[0] ).'('.$s.');return false;">'.esc_html( $button_text ).'</div>'; |
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$output = apply_filters( 'essential_form_after_submit', $output, $post, $settings, $atts ); |
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$output .= '<input type="hidden" value="'.esc_attr( implode( ',',$keys ) ).'" id="'.esc_attr( $keys[5] ).'-'.$s.'" />'; |
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$output .= '<input type="hidden" value="" id="'.esc_attr( $keys[6] ).'-'.$s.'" />'; |
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$output .= '</form>'; |
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$output .= '<div id="'.esc_attr( $keys[8] ).'-'.$s.'" style="margin-bottom:16px"></div>'; |
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$output .= '</div>'; |
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if( 1 === $s ){ |
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$output .= '<script id="'.esc_attr( $keys[0] ).'-'.$s.'-js" type="text/javascript">'; |
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$output .= 'essential_form_random_key = Math.floor(Math.random() * 99999999999999);'; |
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$output .= 'function essential_form_'.sanitize_key( $keys[0] ).'_init(){'; |
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$output .= 'var r = new XMLHttpRequest(),f=new FormData();'; |
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$output .= 'r.open("POST","'.esc_js( admin_url( 'admin-ajax.php' ) ).'?action='.ESSENTIAL_FORM_AJAX_KEY.'_get_key",true);'; |
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$output .= 'r.onload = function(e){'; |
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$output .= 'if(this.readyState === 4 && "" !== e.target.responseText){'; |
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$output .= 'document.getElementById("'.esc_attr( $keys[6] ).'-'.$s.'").value = e.target.responseText;'; |
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$output .= '}'; |
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$output .= '};'; |
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$output .= 'f.append("random_key",essential_form_random_key);'; |
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$output .= 'r.send(f);'; |
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$output .= '}'; |
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$output .= 'essential_form_'.sanitize_key( $keys[0] ).'_init();'; |
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$output .= 'function essential_form_'.sanitize_key( $keys[0] ).'(n){'; |
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$output .= 'var req = new XMLHttpRequest(),fd=new FormData(),succ=document.getElementById("'.esc_attr( $keys[7] ).'-'.$s.'"),err=document.getElementById("'.esc_attr( $keys[8] ).'-'.$s.'"),fe=document.getElementById("'.esc_attr( $keys[0] ).'-" + n);'; |
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$output .= 'fe.className += " ef-progress";'; |
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$output .= 'succ.style.display="none";'; |
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$output .= 'err.style.display="none";'; |
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$output .= 'req.onload = function(e){'; |
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$output .= 'if(this.readyState === 4 && "" !== e.target.responseText){'; |
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$output .= 'if("1" === e.target.responseText){'; |
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$output .= 'succ.style.display="block";'; |
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$output .= 'err.style.display="none";'; |
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$output .= 'document.getElementById("'.esc_attr( $keys[0] ).'-'.$s.'").style.visibility="hidden";'; |
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$output .= '}else{'; |
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$output .= 'err.style.display="block";'; |
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$output .= 'err.innerHTML=e.target.responseText;'; |
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$output .= '}'; |
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$output .= '}'; |
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$output .= 'fe.className = fe.className.replace(" ef-progress","");'; |
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$output .= 'return false;'; |
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$output .= '};'; |
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$f = 1; |
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foreach( essential_form_fields_array() as $fkey ){ |
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if( 'agreement' === $fkey ){ |
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$output .= 'fd.append("'.esc_js( esc_attr( $fkey ) ).'",document.getElementById("'.esc_js( esc_attr( $keys[$f] ) ).'-" + n).checked);'; |
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} |
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elseif( false === strpos( $fkey, 'custom_' ) ){ |
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$output .= 'fd.append("'.esc_js( esc_attr( $fkey ) ).'",document.getElementById("'.esc_js( esc_attr( $keys[$f] ) ).'-" + n).value);'; |
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} |
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++$f; |
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} |
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$output .= apply_filters( 'essential_form_append_custom_field', '' ); |
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global $post; |
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if( $post && is_object( $post ) && isset( $post->ID ) ){ |
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$output .= 'fd.append("post_id",'.absint( $post->ID ).');'; |
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} |
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$output .= 'fd.append("random_key",essential_form_random_key);'; |
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$output .= 'req.open("POST","'.esc_js( admin_url( 'admin-ajax.php' ) ).'?action='.ESSENTIAL_FORM_AJAX_KEY.'",true);'; |
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$output .= 'req.send(fd);'; |
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$output .= 'return false;'; |
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$output .= '}'; |
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$output .= '</script>'; |
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} |
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return $output; |
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} |
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} ); |
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|
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// Return array of fields. |
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function essential_form_fields_array(){ |
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return apply_filters( 'essential_form_fields_array', array( |
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'name', |
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'email', |
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'message', |
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'agreement', |
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'keys', |
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'temp_key' |
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) ); |
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} |
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|
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// Get keys for the anti-spam system. |
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function essential_form_get_keys(){ |
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$keys = false; |
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$opts = essential_form_get_option( 'essential_form' ); |
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if( $opts && isset( $opts['activation_keys'] ) ){ |
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$keys = $opts['activation_keys']; |
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foreach( $keys as &$key ){ |
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$key = 'f'.sanitize_text_field( substr( md5( $key ),0,8 ) ); |
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} |
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} |
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return $keys; |
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} |
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|
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add_filter( 'plugin_action_links_'.untrailingslashit( plugin_basename( __FILE__ ) ),function( $links ) { |
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// It action links in the plugins page. |
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$links[] = sprintf( 'Shortcode: %s','<span class="ef-shortcode" style="color:#000">[essential_form]</span>' ); |
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$links[] = '<a href="https://wordpress.org/plugins/essential-form/" target="_blank" rel="noopener">'.esc_html__( 'Description','essential-form' ).'</a>'; |
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return $links; |
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} ); |
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|
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add_action( 'init',function(){ |
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// It loads plugin translation files. |
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load_plugin_textdomain( 'essential-form',false,ESSENTIAL_FORM_PLUGIN_DIR.'/languages/' ); |
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} ); |
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|
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add_filter( 'load_textdomain_mofile',function( $mofile,$domain ){ |
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// Filter function to read plugin translation files. |
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if ( 'essential-form' === $domain ) { |
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$loc = function_exists( 'get_user_locale' ) ? get_user_locale() : get_locale(); |
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$mofile = defined( 'WP_LANG_DIR' ) && WP_LANG_DIR && file_exists( WP_LANG_DIR . '/plugins/essential-form-' . $loc . '.mo' ) ? WP_LANG_DIR . '/plugins/essential-form-' . $loc . '.mo' : ESSENTIAL_FORM_PLUGIN_DIR . '/languages/essential-form-' . $loc . '.mo'; |
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} |
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return $mofile; |
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},10,2 ); |
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|
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|
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// Helper function to add custom field. |
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function essential_form_add_field( $slug, $type, $title, $required = false, $near_field = 'message', $error_message = false, $field_class = '' ) { |
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require_once ESSENTIAL_FORM_PLUGIN_DIR . '/classes/ef-class-add-fields-factory.php'; |
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$new_field = new Essential_Form_Fields_Factory( $slug, $type, $title, $required, $near_field, $error_message, $field_class ); |
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} |
