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<?php |
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/** |
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* Breadcrumb item renderer. |
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* |
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* @package carbon-breadcrumbs |
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*/ |
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/** |
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* Breadcrumb item renderer class. |
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* |
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* Used to render a particular item of the breadcrumb trail. |
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*/ |
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class Carbon_Breadcrumb_Item_Renderer { |
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/** |
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* The item to render. |
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* |
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* @access protected |
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* @var Carbon_Breadcrumb_Item |
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*/ |
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protected $item; |
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/** |
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* The trail object this item belongs to. |
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* |
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* @access protected |
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* @var Carbon_Breadcrumb_Trail |
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*/ |
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protected $trail; |
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/** |
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* The trail renderer. |
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* |
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* @access protected |
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* @var Carbon_Breadcrumb_Trail_Renderer |
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*/ |
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protected $trail_renderer; |
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/** |
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* Index of this item among the rest of the items, zero-based. |
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* |
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* @access protected |
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* @var int |
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*/ |
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protected $index = 0; |
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/** |
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* Constructor. |
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* |
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* Creates and configures a new breadcrumb item renderer. |
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* |
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* @access public |
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* |
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* @param Carbon_Breadcrumb_Item $item The item to render. |
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* @param Carbon_Breadcrumb_Trail $trail The trail this item belongs to. |
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* @param Carbon_Breadcrumb_Trail_Renderer $trail_renderer The trail renderer. |
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* @param int $index Index of this item. |
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*/ |
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public function __construct( Carbon_Breadcrumb_Item $item, Carbon_Breadcrumb_Trail $trail, Carbon_Breadcrumb_Trail_Renderer $trail_renderer, $index = 0 ) { |
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$this->set_item( $item ); |
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$this->set_trail( $trail ); |
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$this->set_trail_renderer( $trail_renderer ); |
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$this->set_index( $index ); |
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} |
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/** |
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* Render the item. |
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* |
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* @access public |
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* |
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* @return string $item_output The HTML of this item. |
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*/ |
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public function render() { |
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$item_output = ''; |
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$item = $this->get_item(); |
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$index = $this->get_index(); |
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$trail = $this->get_trail(); |
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$trail_renderer = $this->get_trail_renderer(); |
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// Link before and opening <a>. |
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$item_output .= $this->render_link_before(); |
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// Title along with its wrappers. |
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$item_output .= $this->render_title(); |
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// Closing </a> and link after. |
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$item_output .= $this->render_link_after(); |
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// Allow item output to be filtered. |
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return apply_filters( 'carbon_breadcrumbs_item_output', $item_output, $item, $trail, $trail_renderer, $index ); |
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} |
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/** |
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* Retrieve the item link URL. |
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* |
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* @access public |
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* |
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* @return string $item_link The link URL of this item. |
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*/ |
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public function get_item_link() { |
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$item = $this->get_item(); |
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$item_link = apply_filters( 'carbon_breadcrumbs_item_link', $item->get_link(), $item ); |
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return $item_link; |
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} |
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/** |
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* Render the item link opening tag and its "before" wrapper. |
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* |
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* @access public |
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* |
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* @return string $output The output HTML. |
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*/ |
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public function render_link_before() { |
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$trail_renderer = $this->get_trail_renderer(); |
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$item_link = $this->get_item_link(); |
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// HTML before link opening tag. |
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$output = $trail_renderer->get_link_before(); |
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// Link can be optional or disabled. |
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if ( $item_link && $this->is_link_enabled() ) { |
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$output .= '<a href="' . $item_link . '"' . $this->get_item_attributes_html() . '>'; |
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} |
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return $output; |
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} |
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/** |
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* Render the item link closing tag and its "after" wrapper. |
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* |
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* @access public |
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* |
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* @return string $output The output HTML. |
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*/ |
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public function render_link_after() { |
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$trail_renderer = $this->get_trail_renderer(); |
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$item_link = $this->get_item_link(); |
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$output = ''; |
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// Link can be optional or disabled. |
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if ( $item_link && $this->is_link_enabled() ) { |
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$output .= '</a>'; |
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} |
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// HTML after link closing tag. |
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$output .= $trail_renderer->get_link_after(); |
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return $output; |
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} |
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/** |
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* Render the item title, along with its before & after wrappers. |
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* |
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* @access public |
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* |
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* @return string $output The output HTML. |
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*/ |
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public function render_title() { |
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$item = $this->get_item(); |
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$trail_renderer = $this->get_trail_renderer(); |
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// HTML before title. |
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$output = $trail_renderer->get_title_before(); |
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// Breadcrumb item title. |
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$output .= apply_filters( 'carbon_breadcrumbs_item_title', $item->get_title(), $item ); |
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// HTML after title. |
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$output .= $trail_renderer->get_title_after(); |
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return $output; |
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} |
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/** |
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* Retrieve the attributes of the item link. |
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* |
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* @access public |
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* |
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* @return string $attributes_html The HTML of the item attributes. |
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*/ |
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public function get_item_attributes_html() { |
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$item = $this->get_item(); |
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// Get the item attributes. |
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$item_attributes = apply_filters( 'carbon_breadcrumbs_item_attributes', $item->get_attributes(), $item ); |
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// Prepare the item attributes. |
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$attributes_html = ''; |
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foreach ( $item_attributes as $attr => $attr_value ) { |
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$attributes_html .= ' ' . $attr . '="' . esc_attr( $attr_value ) . '"'; |
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} |
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return $attributes_html; |
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} |
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/** |
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* Whether the link of this item is enabled. |
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* |
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* @access public |
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* |
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* @return bool |
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*/ |
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public function is_link_enabled() { |
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$trail = $this->get_trail(); |
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$trail_renderer = $this->get_trail_renderer(); |
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$total_items = $trail->get_total_items(); |
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$index = $this->get_index(); |
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return $trail_renderer->get_last_item_link() || $index < $total_items; |
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} |
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/** |
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* Retrieve the item to render. |
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* |
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* @access public |
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* |
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* @return Carbon_Breadcrumb_Item $item Item to render. |
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*/ |
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public function get_item() { |
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return $this->item; |
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} |
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/** |
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* Modify the item to render. |
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* |
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* @access public |
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* |
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* @param Carbon_Breadcrumb_Item $item Item to render. |
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*/ |
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public function set_item( $item ) { |
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$this->item = $item; |
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} |
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/** |
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* Retrieve the trail this item belongs to. |
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* |
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* @access public |
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* |
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* @return Carbon_Breadcrumb_Trail $trail Trail this item belongs to. |
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*/ |
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public function get_trail() { |
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return $this->trail; |
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} |
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/** |
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* Modify the trail this item belongs to. |
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* |
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* @access public |
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* |
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* @param Carbon_Breadcrumb_Trail $trail Trail this item belongs to. |
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*/ |
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public function set_trail( $trail ) { |
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$this->trail = $trail; |
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} |
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/** |
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* Retrieve the trail renderer. |
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* |
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* @access public |
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* |
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* @return Carbon_Breadcrumb_Trail_Renderer $trail_renderer Trail renderer. |
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*/ |
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public function get_trail_renderer() { |
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return $this->trail_renderer; |
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} |
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/** |
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* Modify the trail renderer. |
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* |
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* @access public |
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* |
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* @param Carbon_Breadcrumb_Trail_Renderer $trail_renderer Trail renderer. |
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*/ |
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public function set_trail_renderer( $trail_renderer ) { |
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$this->trail_renderer = $trail_renderer; |
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} |
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/** |
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* Retrieve the index of this item. |
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* |
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* @access public |
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* |
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* @return int $index Index of this item. |
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*/ |
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public function get_index() { |
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return $this->index; |
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} |
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/** |
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* Modify the index of this item. |
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* |
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* @access public |
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* |
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* @param int $index Index of this item. |
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*/ |
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public function set_index( $index = 0 ) { |
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$this->index = $index; |
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} |
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} |
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