<?php

/**

 * WordPress Customize Section classes

 *

 * @package WordPress

 * @subpackage Customize

 * @since 3.4.0

 */

/**

 * Customize Section class.

 *

 * A UI container for controls, managed by the WP_Customize_Manager class.

 *

 * @since 3.4.0

 *

 * @see WP_Customize_Manager

 */

class WP_Customize_Section {

	/**

	 * Incremented with each new class instantiation, then stored in $instance_number.

	 *

	 * Used when sorting two instances whose priorities are equal.

	 *

	 * @since 4.1.0

	 * @var int

	 */

	protected static $instance_count = 0;

	/**

	 * Order in which this instance was created in relation to other instances.

	 *

	 * @since 4.1.0

	 * @var int

	 */

	public $instance_number;

	/**

	 * WP_Customize_Manager instance.

	 *

	 * @since 3.4.0

	 * @var WP_Customize_Manager

	 */

	public $manager;

	/**

	 * Unique identifier.

	 *

	 * @since 3.4.0

	 * @var string

	 */

	public $id;

	/**

	 * Priority of the section which informs load order of sections.

	 *

	 * @since 3.4.0

	 * @var integer

	 */

	public $priority = 160;

	/**

	 * Panel in which to show the section, making it a sub-section.

	 *

	 * @since 4.0.0

	 * @var string

	 */

	public $panel = '';

	/**

	 * Capability required for the section.

	 *

	 * @since 3.4.0

	 * @var string

	 */

	public $capability = 'edit_theme_options';

	/**

	 *

	 * @since 3.4.0

	 */

	public $theme_supports = '';

	/**

	 * Title of the section to show in UI.

	 *

	 * @since 3.4.0

	 * @var string

	 */

	public $title = '';

	/**

	 * Description to show in the UI.

	 *

	 * @since 3.4.0

	 * @var string

	 */

	public $description = '';

	/**

	 * Customizer controls for this section.

	 *

	 * @since 3.4.0

	 * @var array

	 */

	public $controls;

	/**

	 * Type of this section.

	 *

	 * @since 4.1.0

	 * @var string

	 */

	public $type = 'default';

	/**

	 * Active callback.

	 *

	 * @since 4.1.0

	 *

	 * @see WP_Customize_Section::active()

	 *

	 * @var callable Callback is called with one argument, the instance of

	 *               WP_Customize_Section, and returns bool to indicate whether

	 *               the section is active (such as it relates to the URL currently

	 *               being previewed).

	 */

	public $active_callback = '';

	/**

	 * Show the description or hide it behind the help icon.

	 *

	 * @since 4.7.0

	 *

	 * @var bool Indicates whether the Section's description should be

	 *           hidden behind a help icon ("?") in the Section header,

	 *           similar to how help icons are displayed on Panels.

	 */

	public $description_hidden = false;

	/**

	 * Constructor.

	 *

	 * Any supplied $args override class property defaults.

	 *

	 * @since 3.4.0

	 *

	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.

	 */

	public function __construct( $manager, $id, $args = array() ) {

		$keys = array_keys( get_object_vars( $this ) );

		foreach ( $keys as $key ) {

			if ( isset( $args[ $key ] ) ) {

				$this->$key = $args[ $key ];

			}

		}

		$this->manager = $manager;

		$this->id      = $id;

		if ( empty( $this->active_callback ) ) {

			$this->active_callback = array( $this, 'active_callback' );

		}

		self::$instance_count += 1;

		$this->instance_number = self::$instance_count;

		$this->controls = array(); // Users cannot customize the $controls array.

	}

	/**

	 * Check whether section is active to current Customizer preview.

	 *

	 * @since 4.1.0

	 *

	 * @return bool Whether the section is active to the current preview.

	 */

	final public function active() {

		$section = $this;

		$active  = call_user_func( $this->active_callback, $this );

		/**

		 * Filters response of WP_Customize_Section::active().

		 *

		 * @since 4.1.0

		 *

		 * @param bool                 $active  Whether the Customizer section is active.

		 * @param WP_Customize_Section $section WP_Customize_Section instance.

		 */

		$active = apply_filters( 'customize_section_active', $active, $section );

		return $active;

	}

	/**

	 * Default callback used when invoking WP_Customize_Section::active().

	 *

	 * Subclasses can override this with their specific logic, or they may provide

	 * an 'active_callback' argument to the constructor.

	 *

	 * @since 4.1.0

	 *

	 * @return true Always true.

	 */

	public function active_callback() {

		return true;

	}

	/**

	 * Gather the parameters passed to client JavaScript via JSON.

	 *

	 * @since 4.1.0

	 *

	 * @return array The array to be exported to the client as JSON.

	 */

	public function json() {

		$array                   = wp_array_slice_assoc( (array) $this, array( 'id', 'description', 'priority', 'panel', 'type', 'description_hidden' ) );

		$array['title']          = html_entity_decode( $this->title, ENT_QUOTES, get_bloginfo( 'charset' ) );

		$array['content']        = $this->get_content();

		$array['active']         = $this->active();

		$array['instanceNumber'] = $this->instance_number;

		if ( $this->panel ) {

			$array['customizeAction'] = sprintf( __( 'Customizing ▸ %s' ), esc_html( $this->manager->get_panel( $this->panel )->title ) );

		} else {

			$array['customizeAction'] = __( 'Customizing' );

		}

		return $array;

	}

	/**

	 * Checks required user capabilities and whether the theme has the

	 * feature support required by the section.

	 *

	 * @since 3.4.0

	 *

	 * @return bool False if theme doesn't support the section or user doesn't have the capability.

	 */

	final public function check_capabilities() {

			return false;

		}

			return false;

		}

		return true;

	}

	/**

	 * Get the section's content for insertion into the Customizer pane.

	 *

	 * @since 4.1.0

	 *

	 * @return string Contents of the section.

	 */

	final public function get_content() {

		ob_start();

		$this->maybe_render();

		return trim( ob_get_clean() );

	}

	/**

	 * Check capabilities and render the section.

	 *

	 * @since 3.4.0

	 */

	final public function maybe_render() {

		if ( ! $this->check_capabilities() ) {

			return;

		}

		/**

		 * Fires before rendering a Customizer section.

		 *

		 * @since 3.4.0

		 *

		 * @param WP_Customize_Section $this WP_Customize_Section instance.

		 */

		do_action( 'customize_render_section', $this );

		/**

		 * Fires before rendering a specific Customizer section.

		 *

		 * The dynamic portion of the hook name, `$this->id`, refers to the ID

		 * of the specific Customizer section to be rendered.

		 *

		 * @since 3.4.0

		 */

		do_action( "customize_render_section_{$this->id}" );

		$this->render();

	}

	/**

	 * Render the section UI in a subclass.

	 *

	 * Sections are now rendered in JS by default, see WP_Customize_Section::print_template().

	 *

	 * @since 3.4.0

	 */

	protected function render() {}

	/**

	 * Render the section's JS template.

	 *

	 * This function is only run for section types that have been registered with

	 * WP_Customize_Manager::register_section_type().

	 *

	 * @since 4.3.0

	 *

	 * @see WP_Customize_Manager::render_template()

	 */

	public function print_template() {

		?>

		<script type="text/html" id="tmpl-customize-section-<?php echo $this->type; ?>">

			<?php $this->render_template(); ?>

		</script>

		<?php

	}

	/**

	 * An Underscore (JS) template for rendering this section.

	 *

	 * Class variables for this section class are available in the `data` JS object;

	 * export custom variables by overriding WP_Customize_Section::json().

	 *

	 * @since 4.3.0

	 *

	 * @see WP_Customize_Section::print_template()

	 */

	protected function render_template() {

		?>

		<li id="accordion-section-{{ data.id }}" class="accordion-section control-section control-section-{{ data.type }}">

			<h3 class="accordion-section-title" tabindex="0">

				{{ data.title }}

				<span class="screen-reader-text"><?php _e( 'Press return or enter to open this section' ); ?></span>

			</h3>

			<ul class="accordion-section-content">

				<li class="customize-section-description-container section-meta <# if ( data.description_hidden ) { #>customize-info<# } #>">

					<div class="customize-section-title">

						<button class="customize-section-back" tabindex="-1">

							<span class="screen-reader-text"><?php _e( 'Back' ); ?></span>

						</button>

						<h3>

							<span class="customize-action">

								{{{ data.customizeAction }}}

							</span>

							{{ data.title }}

						</h3>

						<# if ( data.description && data.description_hidden ) { #>

							<button type="button" class="customize-help-toggle dashicons dashicons-editor-help" aria-expanded="false"><span class="screen-reader-text"><?php _e( 'Help' ); ?></span></button>

							<div class="description customize-section-description">

								{{{ data.description }}}

							</div>

						<# } #>

						<div class="customize-control-notifications-container"></div>

					</div>

					<# if ( data.description && ! data.description_hidden ) { #>

						<div class="description customize-section-description">

							{{{ data.description }}}

						</div>

					<# } #>

				</li>

			</ul>

		</li>

		<?php

	}

}

/** WP_Customize_Themes_Section class */

/** WP_Customize_Sidebar_Section class */

/** WP_Customize_Nav_Menu_Section class */