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<?php |
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/** |
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* The Carbon Pagination number links item class. |
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* Responsible for the "1, 2, 3, ..., 10, 20, 30" pagination item. |
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* |
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* @uses Carbon_Pagination_Item |
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*/ |
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class Carbon_Pagination_Item_Number_Links extends Carbon_Pagination_Item { |
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/** |
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* Initialize the item. |
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* Generate the sub items of this item. |
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*/ |
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public function init() { |
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$pagination = $this->get_collection()->get_pagination(); |
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// initialize subitems collection |
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$subitems_collection = new Carbon_Pagination_Collection( $pagination, false ); |
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$this->set_subitems_collection( $subitems_collection ); |
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// generate large numbers - before |
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$this->generate_large_number_pages_before(); |
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// generate page numbers |
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$this->generate_regular_number_pages(); |
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// generate large numbers - after |
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$this->generate_large_number_pages_after(); |
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// generate & add limiters |
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$this->generate_limiters(); |
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// generate & add wrappers |
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$this->generate_wrappers(); |
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} |
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/** |
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* Generate number pages (subitems) in a certain range, |
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* with a specified interval and within a specific limit. |
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* Can optionally generate the items starting from the end. |
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* |
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* @param int $from Index of the first page. |
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* @param int $to Index of the last page. |
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* @param int $interval Interval between pages. |
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* @param int $limit Number of pages to create. |
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* @param bool $from_end Whether to start from the end. |
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*/ |
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public function generate_pages( $from, $to, $interval = 1, $limit = 0, $from_end = false ) { |
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// generate items for the current range, using the specified interval |
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$new_subitems = $this->generate_pages_with_interval( $from, $to, $interval ); |
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// limit items if necessary |
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if ( $limit ) { |
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$start = $from_end ? -1 * $limit : 0; |
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$new_subitems = array_slice( $new_subitems, $start, $limit ); |
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} |
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// update the subitems collection with the new items |
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$subitems_collection = $this->get_subitems_collection(); |
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$subitems_collection->add_items( $new_subitems ); |
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} |
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/** |
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* Generate number pages (subitems) in a certain range with a specified interval. |
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* |
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* @param int $from Index of the first page. |
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* @param int $to Index of the last page. |
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* @param int $interval Interval between pages. |
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* @return array $new_subitems Generated items. |
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*/ |
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public function generate_pages_with_interval( $from, $to, $interval = 1 ) { |
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$collection = $this->get_collection(); |
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$new_subitems = array(); |
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for ( $i = $from; $i < $to; $i += $interval ) { |
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$page_item = new Carbon_Pagination_Item_Page( $collection ); |
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$page_item->set_page_number( $i ); |
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$new_subitems[] = $page_item; |
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} |
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return $new_subitems; |
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} |
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/** |
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* Generate the regular consecutive number pages. |
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*/ |
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public function generate_regular_number_pages() { |
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// get various pagination variables that we need |
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$pagination = $this->get_collection()->get_pagination(); |
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$current_page_idx = $pagination->get_current_page() - 1; |
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$number_limit = $pagination->get_number_limit(); |
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$total_pages = $pagination->get_total_pages(); |
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// determine the range and generate the pages |
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if ( $number_limit >= 0 ) { |
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$from = max( 0, $current_page_idx - $number_limit ); |
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$to = min( $total_pages, $current_page_idx + $number_limit + 1 ); |
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} else { |
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$from = 0; |
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$to = $total_pages; |
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} |
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$this->generate_pages( $from, $to ); |
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} |
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/** |
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* Generate the large number page items - before the regular number pages. |
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*/ |
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public function generate_large_number_pages_before() { |
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// get various pagination variables that we need |
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$pagination = $this->get_collection()->get_pagination(); |
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$current_page_idx = $pagination->get_current_page() - 1; |
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$number_limit = $pagination->get_number_limit(); |
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$large_page_number_limit = $pagination->get_large_page_number_limit(); |
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$large_page_number_interval = $pagination->get_large_page_number_interval(); |
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// if enabled, determine the range and generate the pages |
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if ( $large_page_number_limit > 0 ) { |
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$from = $large_page_number_interval - 1; |
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$to = $current_page_idx - $number_limit; |
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$this->generate_pages( $from, $to, $large_page_number_interval, $large_page_number_limit ); |
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} |
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} |
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/** |
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* Generate the large number page items - after the regular number pages. |
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*/ |
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public function generate_large_number_pages_after() { |
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// get various pagination variables that we need |
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$pagination = $this->get_collection()->get_pagination(); |
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$current_page_idx = $pagination->get_current_page() - 1; |
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$total_pages = $pagination->get_total_pages(); |
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$number_limit = $pagination->get_number_limit(); |
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$large_page_number_limit = $pagination->get_large_page_number_limit(); |
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$large_page_number_interval = $pagination->get_large_page_number_interval(); |
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// if enabled, determine the range and generate the pages |
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if ( $large_page_number_limit > 0 ) { |
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$from_raw = $current_page_idx + $number_limit + 1; |
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$from = intval( ceil( $from_raw / $large_page_number_interval ) ) * $large_page_number_interval - 1; |
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if ( $from == $current_page_idx + $number_limit ) { |
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$from += $large_page_number_interval; |
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} |
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$to = $total_pages; |
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$this->generate_pages( $from, $to, $large_page_number_interval, $large_page_number_limit, true ); |
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} |
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} |
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/** |
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* Generate and add limiters where necessary. |
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*/ |
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public function generate_limiters() { |
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// get various pagination variables that we need |
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$collection = $this->get_collection(); |
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$pagination = $collection->get_pagination(); |
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$subitems_collection = $this->get_subitems_collection(); |
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$subitems = $subitems_collection->get_items(); |
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$large_page_number_interval = $pagination->get_large_page_number_interval(); |
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// generate a prototype limiter item |
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$limiter_item = new Carbon_Pagination_Item_Limiter( $collection ); |
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// insert limiters before & after the page numbers |
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for ( $i = count( $subitems ) - 1; $i > 0; $i-- ) { |
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$prev = $subitems[ $i - 1 ]->get_page_number(); |
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$current = $subitems[ $i ]->get_page_number(); |
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if ( $current > $prev + 1 && $current - $prev != $large_page_number_interval ) { |
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$subitems_collection->insert_item_at( clone $limiter_item, $i ); |
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} |
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} |
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} |
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/** |
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* Generate and add wrappers. |
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*/ |
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public function generate_wrappers() { |
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// get various pagination variables that we need |
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$collection = $this->get_collection(); |
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$pagination = $collection->get_pagination(); |
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$subitems_collection = $this->get_subitems_collection(); |
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$total_subitems = count( $subitems_collection->get_items() ); |
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// if there is at least one subitem in the collection |
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if ( $total_subitems ) { |
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// insert wrapper before the subitems |
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$wrapper_before = new Carbon_Pagination_Item_HTML( $collection ); |
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$wrapper_before->set_html( $pagination->get_numbers_wrapper_before() ); |
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$subitems_collection->insert_item_at( $wrapper_before, 0 ); |
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// insert wrapper after the subitems |
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$wrapper_after = new Carbon_Pagination_Item_HTML( $collection ); |
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$wrapper_after->set_html( $pagination->get_numbers_wrapper_after() ); |
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$subitems_collection->insert_item_at( $wrapper_after, $total_subitems + 1 ); |
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} |
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} |
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} |
2createStudio /
carbon-pagination
