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388 lines
12 KiB
PHTML
388 lines
12 KiB
PHTML
8 months ago
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<?php
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/**
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* Dark Mode Class
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*
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* @package WordPress
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* @subpackage Twenty_Twenty_One
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* @since Twenty Twenty-One 1.0
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*/
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/**
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* This class is in charge of Dark Mode.
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*/
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class Twenty_Twenty_One_Dark_Mode {
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/**
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* Instantiates the object.
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*
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* @since Twenty Twenty-One 1.0
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*/
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public function __construct() {
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// Enqueue assets for the block-editor.
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add_action( 'enqueue_block_assets', array( $this, 'editor_custom_color_variables' ) );
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// Add styles for dark-mode.
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
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// Add scripts for customizer controls.
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add_action( 'customize_controls_enqueue_scripts', array( $this, 'customize_controls_enqueue_scripts' ) );
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// Add customizer controls.
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add_action( 'customize_register', array( $this, 'customizer_controls' ) );
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// Add HTML classes.
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add_filter( 'twentytwentyone_html_classes', array( $this, 'html_classes' ) );
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// Add classes to <body> in the dashboard.
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add_filter( 'admin_body_class', array( $this, 'admin_body_classes' ) );
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// Add the switch on the frontend & customizer.
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add_action( 'wp_footer', array( $this, 'the_switch' ) );
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// Add the privacy policy content.
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add_action( 'admin_init', array( $this, 'add_privacy_policy_content' ) );
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}
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/**
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* Enqueues editor custom color variables & scripts.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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public function editor_custom_color_variables() {
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if ( ! $this->switch_should_render() ) {
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return;
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}
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$background_color = get_theme_mod( 'background_color', 'D1E4DD' );
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$should_respect_color_scheme = get_theme_mod( 'respect_user_color_preference', false );
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if ( $should_respect_color_scheme && Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( $background_color ) > 127 ) {
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// Add Dark Mode variable overrides.
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wp_add_inline_style(
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'twenty-twenty-one-custom-color-overrides',
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'.is-dark-theme.is-dark-theme .editor-styles-wrapper { --global--color-background: var(--global--color-dark-gray); --global--color-primary: var(--global--color-light-gray); --global--color-secondary: var(--global--color-light-gray); --button--color-text: var(--global--color-background); --button--color-text-hover: var(--global--color-secondary); --button--color-text-active: var(--global--color-secondary); --button--color-background: var(--global--color-secondary); --button--color-background-active: var(--global--color-background); --global--color-border: #9ea1a7; --table--stripes-border-color: rgba(240, 240, 240, 0.15); --table--stripes-background-color: rgba(240, 240, 240, 0.15); }'
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);
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}
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wp_enqueue_script(
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'twentytwentyone-dark-mode-support-toggle',
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get_template_directory_uri() . '/assets/js/dark-mode-toggler.js',
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array(),
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'1.0.0',
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array( 'in_footer' => true )
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);
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wp_enqueue_script(
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'twentytwentyone-editor-dark-mode-support',
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get_template_directory_uri() . '/assets/js/editor-dark-mode-support.js',
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array( 'twentytwentyone-dark-mode-support-toggle' ),
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'1.0.0',
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array( 'in_footer' => true )
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);
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}
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/**
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* Enqueues scripts and styles.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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public function enqueue_scripts() {
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if ( ! $this->switch_should_render() ) {
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return;
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}
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$url = get_template_directory_uri() . '/assets/css/style-dark-mode.css';
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if ( is_rtl() ) {
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$url = get_template_directory_uri() . '/assets/css/style-dark-mode-rtl.css';
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}
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wp_enqueue_style( 'tt1-dark-mode', $url, array( 'twenty-twenty-one-style' ), wp_get_theme()->get( 'Version' ) ); // @phpstan-ignore-line. Version is always a string.
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}
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/**
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* Enqueues scripts for the customizer.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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public function customize_controls_enqueue_scripts() {
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if ( ! $this->switch_should_render() ) {
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return;
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}
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wp_enqueue_script(
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'twentytwentyone-customize-controls',
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get_template_directory_uri() . '/assets/js/customize.js',
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array( 'customize-base', 'customize-controls', 'underscore', 'jquery', 'twentytwentyone-customize-helpers' ),
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'1.0.0',
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array( 'in_footer' => true )
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);
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}
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/**
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* Registers customizer options.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param WP_Customize_Manager $wp_customize Theme Customizer object.
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* @return void
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*/
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public function customizer_controls( $wp_customize ) {
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$colors_section = $wp_customize->get_section( 'colors' );
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if ( is_object( $colors_section ) ) {
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$colors_section->title = __( 'Colors & Dark Mode', 'twentytwentyone' );
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}
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// Custom notice control.
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require_once get_theme_file_path( 'classes/class-twenty-twenty-one-customize-notice-control.php' ); // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude.FileIncludeFound
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$wp_customize->add_setting(
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'respect_user_color_preference_notice',
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array(
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'capability' => 'edit_theme_options',
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'default' => '',
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'sanitize_callback' => '__return_empty_string',
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)
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);
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$wp_customize->add_control(
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new Twenty_Twenty_One_Customize_Notice_Control(
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$wp_customize,
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'respect_user_color_preference_notice',
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array(
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'section' => 'colors',
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'priority' => 100,
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'active_callback' => static function () {
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return 127 >= Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( get_theme_mod( 'background_color', 'D1E4DD' ) );
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},
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)
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)
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);
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$wp_customize->add_setting(
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'respect_user_color_preference',
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array(
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'capability' => 'edit_theme_options',
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'default' => false,
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'sanitize_callback' => static function ( $value ) {
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return (bool) $value;
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},
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)
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);
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$description = '<p>';
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$description .= sprintf(
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/* translators: %s: Twenty Twenty-One support article URL. */
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__( 'Dark Mode is a device setting. If a visitor to your site requests it, your site will be shown with a dark background and light text. <a href="%s">Learn more about Dark Mode.</a>', 'twentytwentyone' ),
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esc_url( __( 'https://wordpress.org/documentation/article/twenty-twenty-one/#dark-mode-support', 'twentytwentyone' ) )
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);
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$description .= '</p>';
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$description .= '<p>' . __( 'Dark Mode can also be turned on and off with a button that you can find in the bottom corner of the page.', 'twentytwentyone' ) . '</p>';
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$wp_customize->add_control(
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'respect_user_color_preference',
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array(
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'type' => 'checkbox',
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'section' => 'colors',
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'label' => esc_html__( 'Dark Mode support', 'twentytwentyone' ),
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'priority' => 110,
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'description' => $description,
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'active_callback' => static function ( $value ) {
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return 127 < Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( get_theme_mod( 'background_color', 'D1E4DD' ) );
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},
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)
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);
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// Add partial for background_color.
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$wp_customize->selective_refresh->add_partial(
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'background_color',
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array(
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'selector' => '#dark-mode-toggler',
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'container_inclusive' => true,
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'render_callback' => function () {
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$attrs = ( $this->switch_should_render() ) ? array() : array( 'style' => 'display:none;' );
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$this->the_html( $attrs );
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},
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)
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);
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}
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/**
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* Calculates classes for the main <html> element.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param string $classes The classes for <html> element.
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* @return string
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*/
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public function html_classes( $classes ) {
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if ( ! $this->switch_should_render() ) {
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return $classes;
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}
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$background_color = get_theme_mod( 'background_color', 'D1E4DD' );
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$should_respect_color_scheme = get_theme_mod( 'respect_user_color_preference', false );
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if ( $should_respect_color_scheme && 127 <= Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( $background_color ) ) {
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return ( $classes ) ? ' respect-color-scheme-preference' : 'respect-color-scheme-preference';
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}
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return $classes;
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}
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/**
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* Adds a class to the <body> element in the editor to accommodate dark-mode.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @global WP_Screen $current_screen WordPress current screen object.
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*
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* @param string $classes The admin body-classes.
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* @return string
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*/
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public function admin_body_classes( $classes ) {
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if ( ! $this->switch_should_render() ) {
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return $classes;
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}
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global $current_screen;
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if ( empty( $current_screen ) ) {
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set_current_screen();
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}
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if ( $current_screen->is_block_editor() ) {
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$should_respect_color_scheme = get_theme_mod( 'respect_user_color_preference', false );
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$background_color = get_theme_mod( 'background_color', 'D1E4DD' );
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if ( $should_respect_color_scheme && Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( $background_color ) > 127 ) {
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$classes .= ' twentytwentyone-supports-dark-theme';
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}
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}
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return $classes;
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}
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/**
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* Determines if we want to print the dark-mode switch or not.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @global bool $is_IE
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*
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* @return bool
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*/
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public function switch_should_render() {
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global $is_IE;
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return (
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get_theme_mod( 'respect_user_color_preference', false ) &&
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! $is_IE &&
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127 <= Twenty_Twenty_One_Custom_Colors::get_relative_luminance_from_hex( get_theme_mod( 'background_color', 'D1E4DD' ) )
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);
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}
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/**
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* Adds night/day switch.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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public function the_switch() {
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if ( ! $this->switch_should_render() ) {
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return;
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}
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$this->the_html();
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$this->the_script();
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}
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/**
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* Prints the dark-mode switch HTML.
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*
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* Inspired from https://codepen.io/aaroniker/pen/KGpXZo (MIT-licensed)
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*
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* @since Twenty Twenty-One 1.0
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*
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* @param array $attrs The attributes to add to our <button> element.
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* @return void
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*/
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public function the_html( $attrs = array() ) {
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$attrs = wp_parse_args(
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$attrs,
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array(
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'id' => 'dark-mode-toggler',
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'class' => 'fixed-bottom',
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'aria-pressed' => 'false',
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'onClick' => 'toggleDarkMode()',
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)
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);
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echo '<button';
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foreach ( $attrs as $key => $val ) {
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echo ' ' . esc_attr( $key ) . '="' . esc_attr( $val ) . '"';
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}
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echo '>';
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printf(
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/* translators: %s: On/Off */
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esc_html__( 'Dark Mode: %s', 'twentytwentyone' ),
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'<span aria-hidden="true"></span>'
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);
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echo '</button>';
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?>
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<style>
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#dark-mode-toggler > span {
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margin-<?php echo is_rtl() ? 'right' : 'left'; ?>: 5px;
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}
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#dark-mode-toggler > span::before {
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content: '<?php esc_attr_e( 'Off', 'twentytwentyone' ); ?>';
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}
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#dark-mode-toggler[aria-pressed="true"] > span::before {
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content: '<?php esc_attr_e( 'On', 'twentytwentyone' ); ?>';
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}
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<?php if ( is_admin() || wp_is_json_request() ) : ?>
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.components-editor-notices__pinned ~ .edit-post-visual-editor #dark-mode-toggler {
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z-index: 20;
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}
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.is-dark-theme.is-dark-theme #dark-mode-toggler:not(:hover):not(:focus) {
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color: var(--global--color-primary);
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}
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@media only screen and (max-width: 782px) {
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#dark-mode-toggler {
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margin-top: 32px;
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}
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}
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<?php endif; ?>
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</style>
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<?php
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}
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/**
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* Prints the dark-mode switch script.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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public function the_script() {
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echo '<script>';
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include get_template_directory() . '/assets/js/dark-mode-toggler.js'; // phpcs:ignore WPThemeReview.CoreFunctionality.FileInclude
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echo '</script>';
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}
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/**
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* Adds information to the privacy policy.
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*
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* @since Twenty Twenty-One 1.0
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*
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* @return void
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*/
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public function add_privacy_policy_content() {
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if ( ! function_exists( 'wp_add_privacy_policy_content' ) ) {
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return;
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}
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$content = '<p class="privacy-policy-tutorial">' . __( 'Twenty Twenty-One uses LocalStorage when Dark Mode support is enabled.', 'twentytwentyone' ) . '</p>'
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. '<strong class="privacy-policy-tutorial">' . __( 'Suggested text:', 'twentytwentyone' ) . '</strong> '
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. __( 'This website uses LocalStorage to save the setting when Dark Mode support is turned on or off.<br> LocalStorage is necessary for the setting to work and is only used when a user clicks on the Dark Mode button.<br> No data is saved in the database or transferred.', 'twentytwentyone' );
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wp_add_privacy_policy_content( __( 'Twenty Twenty-One', 'twentytwentyone' ), wp_kses_post( wpautop( $content, false ) ) );
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}
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}
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