inventivo-scroll-to-top.php

<?php /*
Contributors: inventivogermany
Plugin Name:  Scroll to top | inventivo
Plugin URI:   https://www.inventivo.de/wordpress-agentur/wordpress-plugins
Description:  Display scroll to top button at page bottom
Version:      0.0.5
Author:       Nils Harder
Author URI:   https://www.inventivo.de
Tags: scroll top
Requires at least: 3.0
Tested up to: 5.2.2
Stable tag: 0.0.5
Text Domain: inventivo-scroll-to-top
Domain Path: /languages
License:      GPL2
License URI:  https://www.gnu.org/licenses/gpl-2.0.html

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

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

// Version of the plugin
define('INVENTIVO_SCROLL_TO_TOP_CURRENT_VERSION', '1.0.0');

add_action('admin_enqueue_scripts', array('InventivoScrollToTopSettingsPage','inventivo_scroll_to_top_admincss'));
add_action('wp_enqueue_scripts', array('InventivoScrollToTopSettingsPage','inventivo_scroll_to_top_js' ));
add_action('wp_enqueue_scripts', array('InventivoScrollToTopSettingsPage','inventivo_scroll_to_top_publiccss' ));

class InventivoScrollToTopSettingsPage
{
    /**
     * Holds the values to be used in the fields callbacks
     */
    public $options;

    /**
     * Start up
     */
    public function __construct()
    {
        add_action('plugins_loaded', array($this,'inventivo_scroll_to_top_load_textdomain'));
        //add_action('init',array($this,'my_i18n_debug'));
        add_action('admin_menu', array( $this, 'add_plugin_page' ));
        add_action('admin_init', array( $this, 'page_init' ));
    }


    public function inventivo_scroll_to_top_load_textdomain()
    {
        load_plugin_textdomain('inventivo-scroll-to-top', false, dirname(plugin_basename(__FILE__)) . '/languages');
    }

    public function my_i18n_debug()
    {

        $loaded = load_plugin_textdomain('inventivo-scroll-to-top', false, dirname(plugin_basename(__FILE__)) . '/languages');

        if (!$loaded) {
            echo "<hr/>";
            echo "Error: the mo file was not found! ";
            exit();
        } else {
            echo "<hr/><strong>Debug info</strong>:<br/>";
            echo "<br/>";
            echo "translate test: ".__('Scroll to top | inventivo', 'inventivo-scroll-to-top');
            exit();
        }
    }

    /**
     * Add options page
     */
    public function add_plugin_page()
    {
        // This page will be under "Settings"
        add_options_page(
            'Settings Admin',
            esc_html__('Scroll top top | inventivo', 'inventivo-scroll-to-top'),
            'manage_options',
            'inventivo_scroll_to_top_setting_admin',
            array( $this, 'create_admin_page' )
        );
    }

    /**
     * Options page callback
     */
    public function create_admin_page()
    {
        // Set class property
        $this->options = get_option('inventivo_scroll_to_top_option_name');
        ?>
        <div class="wrap">
            <h1><?php esc_html_e('Scroll to top | inventivo', 'inventivo-scroll-to-top'); ?></h1>
            <form method="post" action="options.php">
                <?php
                // This prints out all hidden setting fields
                settings_fields('inventivo_scroll_to_top_option_group');
                do_settings_sections('inventivo_scroll_to_top_setting_admin');
                submit_button();
                ?>
            </form>
        </div>
        <?php
    }

    // Add admin styles
    public function inventivo_scroll_to_top_admincss() 
    {
        wp_enqueue_style('inventivo-scroll-to-top-admin-styles', plugins_url('/admin/css/admin-styles.css', __FILE__));
    }

    // Add public styles
    public function inventivo_scroll_to_top_publiccss() 
    {
        wp_register_style('inventivo-scroll-to-top-publiccss', plugins_url('/public/css/scroll-to-top.css', __FILE__));
        wp_enqueue_style('inventivo-scroll-to-top-publiccss');
        wp_register_style('inventivo-scroll-to-top-genericons', plugins_url('/public/css/genericons.css', __FILE__));
        wp_enqueue_style('inventivo-scroll-to-top-genericons');
    }


    public function inventivo_scroll_to_top_js() 
    {
        $options = get_option('inventivo_scroll_to_top_option_name');

        switch($options['alignment']) {
            case 'left':
                $alignment = 'left';
                break;
            case 'right':
                $alignment = 'right';
                break;
            default:
                $alignment = 'left';
                break;
        }

        wp_register_script('inventivo-scroll-to-top', plugins_url('/public/js/scroll-to-top.js', __FILE__), array( 'jquery' ), '1.0', true);

        $invscrolltotopoptions = array(
            'background_color' => esc_attr($options['background_color']),
            'icon_color' => esc_attr($options['icon_color']),
            'alignment' => $alignment
        );
        wp_localize_script('inventivo-scroll-to-top', 'invscrolltotopoptions', $invscrolltotopoptions);

        // Enqueued script with localized data.
        wp_enqueue_script('inventivo-scroll-to-top');
    }


    /**
     * Register and add settings
     */
    public function page_init()
    {
        register_setting(
            'inventivo_scroll_to_top_option_group', // Option group
            'inventivo_scroll_to_top_option_name', // Option name
            array( $this, 'sanitize' ) // Sanitize
        );

        add_settings_section(
            'setting_section_id', // ID
            esc_html__('Setup', 'inventivo-scroll-to-top'), // Title
            array( $this, 'print_section_info' ), // Callback
            'inventivo_scroll_to_top_setting_admin' // Page
        );

        add_settings_field(
            'background_color', // ID
            'Button background color', // Title
            array( $this, 'background_color_callback' ), // Callback
            'inventivo_scroll_to_top_setting_admin', // Page
            'setting_section_id' // Section
        );

        add_settings_field(
            'icon_color', // ID
            'Icon background color', // Title
            array( $this, 'icon_color_callback' ), // Callback
            'inventivo_scroll_to_top_setting_admin', // Page
            'setting_section_id' // Section
        );

        add_settings_field(
            'alignment', // ID
            'Alignment on page', // Title
            array( $this, 'alignment_callback' ), // Callback
            'inventivo_scroll_to_top_setting_admin', // Page
            'setting_section_id' // Section
        );
    }

    public function sanitize( $input )
    {
        $newInput = array();
        if(isset($input['background_color']) )
            $newInput['background_color'] = sanitize_text_field($input['background_color']);

        if(isset($input['icon_color']) )
            $newInput['icon_color'] = sanitize_text_field($input['icon_color']);

        if(isset($input['alignment']) )
            $newInput['alignment'] = sanitize_text_field($input['alignment']);

        return $newInput;
    }

    public function print_section_info()
    {
        _e('Please adapt colors and button alignment to your needs:', 'inventivo-scroll-to-top');
    }

    public function background_color_callback()
    {
        printf(
            '<input type="text" id="background_color" name="inventivo_scroll_to_top_option_name[background_color]" value="%s" /> '.__('Example: #a6ce38', 'inventivo-scroll-to-top'),
            isset($this->options['background_color']) ? esc_attr($this->options['background_color']) : __('#a6ce38', 'inventivo-scroll-to-top')
        );
    }
    public function icon_color_callback()
    {
        printf( 
            '<input type="text" id="icon_color" name="inventivo_scroll_to_top_option_name[icon_color]" value="%s" /> '.__('Example: #FFFFFF', 'inventivo-scroll-to-top'),
            isset($this->options['icon_color']) ? esc_attr($this->options['icon_color']) : __('#FFFFFF', 'inventivo-scroll-to-top')
        );
    }

    public function alignment_callback()
    {
        if ($this->options['alignment'] == 'left') { 
            $selectedA = 'selected'; 
        }

        if ($this->options['alignment'] == 'right') { 
            $selectedB = 'selected'; 
        }

    printf(
            '<select id="alignment" name="inventivo_scroll_to_top_option_name[alignment]">
                <option value="left" '.$selectedA.'>Left</option>
                <option value="right" '.$selectedB.'>Right</option>
		    </select>',
            isset($this->options['alignment']) ? esc_attr($this->options['alignment']) : __('Alignment', 'inventivo-scroll-to-top')
        );
    }
}

if (is_admin()) {
    $mySettingsPage = new InventivoScrollToTopSettingsPage();
}