wp/wp-includes/class-wp-customize-panel.php
changeset 5 5e2f62d02dcd
child 7 cf61fcea0001
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/class-wp-customize-panel.php	Tue Jun 09 03:35:32 2015 +0200
@@ -0,0 +1,333 @@
+<?php
+/**
+ * WordPress Customize Panel classes
+ *
+ * @package WordPress
+ * @subpackage Customize
+ * @since 4.0.0
+ */
+
+/**
+ * Customize Panel class.
+ *
+ * A UI container for sections, managed by the WP_Customize_Manager.
+ *
+ * @since 4.0.0
+ *
+ * @see WP_Customize_Manager
+ */
+class WP_Customize_Panel {
+
+	/**
+	 * Incremented with each new class instantiation, then stored in $instance_number.
+	 *
+	 * Used when sorting two instances whose priorities are equal.
+	 *
+	 * @since 4.1.0
+	 * @access protected
+	 * @var int
+	 */
+	protected static $instance_count = 0;
+
+	/**
+	 * Order in which this instance was created in relation to other instances.
+	 *
+	 * @since 4.1.0
+	 * @access public
+	 * @var int
+	 */
+	public $instance_number;
+
+	/**
+	 * WP_Customize_Manager instance.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var WP_Customize_Manager
+	 */
+	public $manager;
+
+	/**
+	 * Unique identifier.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var string
+	 */
+	public $id;
+
+	/**
+	 * Priority of the panel, defining the display order of panels and sections.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var integer
+	 */
+	public $priority = 160;
+
+	/**
+	 * Capability required for the panel.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var string
+	 */
+	public $capability = 'edit_theme_options';
+
+	/**
+	 * Theme feature support for the panel.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var string|array
+	 */
+	public $theme_supports = '';
+
+	/**
+	 * Title of the panel to show in UI.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var string
+	 */
+	public $title = '';
+
+	/**
+	 * Description to show in the UI.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var string
+	 */
+	public $description = '';
+
+	/**
+	 * Customizer sections for this panel.
+	 *
+	 * @since 4.0.0
+	 * @access public
+	 * @var array
+	 */
+	public $sections;
+
+	/**
+	 * Type of this panel.
+	 *
+	 * @since 4.1.0
+	 * @access public
+	 * @var string
+	 */
+	public $type = 'default';
+
+	/**
+	 * Active callback.
+	 *
+	 * @since 4.1.0
+	 * @access public
+	 *
+	 * @see WP_Customize_Section::active()
+	 *
+	 * @var callable Callback is called with one argument, the instance of
+	 *               {@see 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 = '';
+
+	/**
+	 * Constructor.
+	 *
+	 * Any supplied $args override class property defaults.
+	 *
+	 * @since 4.0.0
+	 *
+	 * @param WP_Customize_Manager $manager Customizer bootstrap instance.
+	 * @param string               $id      An specific ID for the panel.
+	 * @param array                $args    Panel arguments.
+	 */
+	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->sections = array(); // Users cannot customize the $sections array.
+	}
+
+	/**
+	 * Check whether panel is active to current Customizer preview.
+	 *
+	 * @since 4.1.0
+	 * @access public
+	 *
+	 * @return bool Whether the panel is active to the current preview.
+	 */
+	final public function active() {
+		$panel = $this;
+		$active = call_user_func( $this->active_callback, $this );
+
+		/**
+		 * Filter response of WP_Customize_Panel::active().
+		 *
+		 * @since 4.1.0
+		 *
+		 * @param bool               $active  Whether the Customizer panel is active.
+		 * @param WP_Customize_Panel $panel   {@see WP_Customize_Panel} instance.
+		 */
+		$active = apply_filters( 'customize_panel_active', $active, $panel );
+
+		return $active;
+	}
+
+	/**
+	 * Default callback used when invoking {@see WP_Customize_Panel::active()}.
+	 *
+	 * Subclasses can override this with their specific logic, or they may
+	 * provide an 'active_callback' argument to the constructor.
+	 *
+	 * @since 4.1.0
+	 * @access public
+	 *
+	 * @return bool 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( 'title', 'description', 'priority', 'type' ) );
+		$array['content'] = $this->get_content();
+		$array['active'] = $this->active();
+		$array['instanceNumber'] = $this->instance_number;
+		return $array;
+	}
+
+	/**
+	 * Checks required user capabilities and whether the theme has the
+	 * feature support required by the panel.
+	 *
+	 * @since 4.0.0
+	 *
+	 * @return bool False if theme doesn't support the panel or the user doesn't have the capability.
+	 */
+	final public function check_capabilities() {
+		if ( $this->capability && ! call_user_func_array( 'current_user_can', (array) $this->capability ) ) {
+			return false;
+		}
+
+		if ( $this->theme_supports && ! call_user_func_array( 'current_theme_supports', (array) $this->theme_supports ) ) {
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Get the panel's content template for insertion into the Customizer pane.
+	 *
+	 * @since 4.1.0
+	 *
+	 * @return string Content for the panel.
+	 */
+	final public function get_content() {
+		ob_start();
+		$this->maybe_render();
+		$template = trim( ob_get_contents() );
+		ob_end_clean();
+		return $template;
+	}
+
+	/**
+	 * Check capabilities and render the panel.
+	 *
+	 * @since 4.0.0
+	 */
+	final public function maybe_render() {
+		if ( ! $this->check_capabilities() ) {
+			return;
+		}
+
+		/**
+		 * Fires before rendering a Customizer panel.
+		 *
+		 * @since 4.0.0
+		 *
+		 * @param WP_Customize_Panel $this WP_Customize_Panel instance.
+		 */
+		do_action( 'customize_render_panel', $this );
+
+		/**
+		 * Fires before rendering a specific Customizer panel.
+		 *
+		 * The dynamic portion of the hook name, `$this->id`, refers to
+		 * the ID of the specific Customizer panel to be rendered.
+		 *
+		 * @since 4.0.0
+		 */
+		do_action( "customize_render_panel_{$this->id}" );
+
+		$this->render();
+	}
+
+	/**
+	 * Render the panel container, and then its contents.
+	 *
+	 * @since 4.0.0
+	 * @access protected
+	 */
+	protected function render() {
+		$classes = 'accordion-section control-section control-panel control-panel-' . $this->type;
+		?>
+		<li id="accordion-panel-<?php echo esc_attr( $this->id ); ?>" class="<?php echo esc_attr( $classes ); ?>">
+			<h3 class="accordion-section-title" tabindex="0">
+				<?php echo esc_html( $this->title ); ?>
+				<span class="screen-reader-text"><?php _e( 'Press return or enter to open this panel' ); ?></span>
+			</h3>
+			<ul class="accordion-sub-container control-panel-content">
+				<?php $this->render_content(); ?>
+			</ul>
+		</li>
+		<?php
+	}
+
+	/**
+	 * Render the sections that have been added to the panel.
+	 *
+	 * @since 4.1.0
+	 * @access protected
+	 */
+	protected function render_content() {
+		?>
+		<li class="panel-meta accordion-section control-section<?php if ( empty( $this->description ) ) { echo ' cannot-expand'; } ?>">
+			<div class="accordion-section-title" tabindex="0">
+				<span class="preview-notice"><?php
+					/* translators: %s is the site/panel title in the Customizer */
+					echo sprintf( __( 'You are customizing %s' ), '<strong class="panel-title">' . esc_html( $this->title ) . '</strong>' );
+				?></span>
+			</div>
+			<?php if ( ! empty( $this->description ) ) : ?>
+				<div class="accordion-section-content description">
+					<?php echo $this->description; ?>
+				</div>
+			<?php endif; ?>
+		</li>
+		<?php
+	}
+}