Demonstrates how to set default options with the options_{instantiated class name} hook in Admin Page Framework

admin-page-framework-demo-default-options.php

<?php
/* 
 * Plugin Name: Admin Page Framework Demo - Default Option Values
 * Description: Demonstrates how to set default options with the options_{instantiated class name} hook in Admin Page Framework
 * Author:      Michael Uno
 * Author URI:  http://michaeluno.jp
 * Version:     1.0.1
 * Requirement: Admin Page Framework v3.1.0 or higher.
 */ 

if ( ! class_exists( 'AdminPageFramework' ) ) {
    include( dirname( __FILE__ ) . '/library/admin-page-framework.min.php' );
    // include( dirname( dirname( __FILE__ ) ) . '/admin-page-framework/development/admin-page-framework.php' );
}
    
class APF_Demo_DefaultOptions extends AdminPageFramework {

    public function setUp() {

        $this->setRootMenuPage( 'Settings' );    // where to belong
        $this->addSubMenuItem(
            array(
                'title'         => __( 'Default Options', 'admin-page-framework-demo-default-options' ),    // page and menu title
                'page_slug'     => 'apf_demo_default_options'    // page slug
            )
        );
            
        $this->addSettingSections(    
            array(
                'section_id'    => 'default_options_demo',    
                'page_slug'     => 'apf_demo_default_options',    
            )
        );
        
        $this->addSettingFields(
            'default_options_demo',    // the target section ID
            array(    
                'field_id'      => 'my_text_field',
                'title'         => __( 'Text Input', 'admin-page-framework-demo-default-options' ),
                'type'          => 'text',
            ),
            array(    
                'field_id'      => 'my_text_field_repeatable',
                'title'         => __( 'Repeatable Text Inputs', 'admin-page-framework-demo-default-options' ),
                'type'          => 'text',
                'repeatable'    => true,    
            ),
            array(    
                'field_id'      => 'my_select',
                'title'         => __( 'Select', 'admin-page-framework-demo-default-options' ),
                'type'          => 'select',
                'label'         => array(
                    'a' => __( 'A', 'admin-page-framework-demo-default-options' ),
                    'b' => __( 'B', 'admin-page-framework-demo-default-options' ),
                    'c' => __( 'C', 'admin-page-framework-demo-default-options' ),
                )
            ),            
            array(    
                'field_id'      => 'my_check_box',
                'title'         => __( 'Check Box', 'admin-page-framework-demo-default-options' ),
                'type'          => 'checkbox',
                'label'         => __(  'Check me!', 'admin-page-framework-demo-default-options' ),
            ),        
            array(    
                'field_id'      => 'my_color',
                'title'         => __( 'Color', 'admin-page-framework-demo-default-options' ),
                'type'          => 'color',
            ),            
            array(
                'field_id'      => 'my_submit_reset',
                'type'          => 'submit',            
                'reset'         => true,
                'label'         => __( 'Reset', 'admin-page-framework-demo-default-options' ),
                'attributes'    => array(
                    'class' => 'button button-secondary'
                ),
            )

        );
        
    }            
            
    /**
     * Do something in the page.
     * 
     * @remark    This is a pre-defined framework method.
     */
    public function do_apf_demo_default_options() {    // do_{page slug}        
        submit_button();    // Add a submit button
    }
    
    /**
     * Returns the options.
     */
    public function options_APF_Demo_DefaultOptions( $aOptions ) {    // options_{instantiated class name}

        /* 
         * Structure
         *     array(
         *         'section id' => array(
         *             'field id'   => 'value'
         *         )
         *    )
         */
        return $aOptions + array(
            'default_options_demo'          => array(
                'my_text_field'             => 'Hello World!',
                'my_text_field_repeatable'  => array(
                    'This is the first value',
                    'This is the second value',
                    'This is the third value',
                ),
                'my_select'                 => 'b',
                'my_check_box'              => true,
                'my_color'                  => '#DDD'
            )
        );
    }
    
}
new APF_Demo_DefaultOptions;