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<?php |
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/** |
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* Flow controller class |
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* |
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* Builds all the actions that need to be executed on a certain page request. |
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* Builds the view hierarchy of a certain page. |
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* |
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* @package Stencil |
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*/ |
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/** |
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* Class Flow |
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*/ |
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class Stencil_Flow implements Stencil_Flow_Interface { |
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/** |
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* Pages that are considered of the 'archive' type |
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* |
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* Allows for view to fall through to 'archive' |
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* Allows for listing posts |
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* |
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* @var array |
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*/ |
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protected $archive_pages = array( |
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'author', |
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'category', |
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'taxonomy', |
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'date', |
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'tag', |
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'archive', |
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'post-type-archive', |
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); |
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/** |
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* Create a list of actions for the specified page |
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* |
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* @param string $page Page to get Actions for. |
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* |
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* @return array of actions |
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*/ |
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public function get_page_actions( $page ) { |
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/** |
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* Actions to be executed |
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*/ |
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$actions = array( |
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'always' |
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); |
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// Singular = single item (post, attachment, page, etc). |
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if ( is_singular() ) { |
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$actions[] = 'singular'; |
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} |
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// Paged page (pagination). |
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if ( is_paged() ) { |
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$actions[] = 'paged'; |
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} |
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if ( is_sticky() ) { |
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$actions[] = 'sticky'; |
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} |
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if ( is_user_logged_in() ) { |
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$actions[] = 'logged-in'; |
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$actions[] = 'loggedin'; |
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} |
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if ( in_array( $page, $this->archive_pages, true ) || 'home' === $page ) { |
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$actions[] = 'archived'; |
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} |
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// Add page action. |
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$actions[] = $page; |
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// Apply filters. |
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$actions = Stencil_Environment::filter( 'actions-' . $page, $actions ); |
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$actions = Stencil_Environment::filter( 'actions', $actions ); |
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return $actions; |
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} |
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/** |
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* Determine which view is available for loading |
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* |
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* @param string $page Page to get hierarchy of. |
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* |
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* @return array |
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* @throws Exception When handler doesn't return expected type. |
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*/ |
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public function get_view_hierarchy( $page ) { |
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/** |
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* Get the possible views for specified page: |
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*/ |
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$options = Stencil_Handler_Factory::get_hierarchy_handler( $page ); |
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if ( ! is_array( $options ) && ! ( $options instanceof Traversable ) ) { |
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throw new Exception( 'Expected array got ' . gettype( $options ) ); |
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} |
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if ( is_array( $options ) ) { |
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$options = new ArrayIterator( $options ); |
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} |
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/** |
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* Add archive option for archive pages: |
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*/ |
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if ( 'archived' !== $page && in_array( $page, $this->archive_pages, true ) ) { |
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$this->add_to_options( 'archived', $options ); |
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} |
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/** |
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* Add paged option for paged pages: |
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*/ |
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if ( 'paged' !== $page && is_paged() ) { |
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$this->add_to_options( 'paged', $options ); |
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} |
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/** |
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* Convert to array for filtering and return ouput |
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*/ |
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$options = iterator_to_array( $options ); |
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// Apply filter. |
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$options = Stencil_Environment::filter( 'views-' . $page, $options ); |
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return $options; |
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} |
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/** |
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* Add additional options to the existing array |
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* |
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* @param string $type Type to get options for. |
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* @param array|Iterator $options Reference. Existing options. |
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* |
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* @throws Exception |
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*/ |
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private function add_to_options( $type, & $options ) { |
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$additive_options = $this->get_view_hierarchy( $type ); |
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if ( array() !== $additive_options ) { |
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if ( ! ( $options instanceof AppendIterator ) ) { |
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$all_options = new AppendIterator(); |
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$all_options->append( $options ); |
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} else { |
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$all_options = $options; |
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} |
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$all_options->append( new ArrayIterator( $additive_options ) ); |
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$options = $all_options; |
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} |
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} |
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} |
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moorscode /
stencil
