<?php

/**

 * Terms List Table class.

 *

 * @package WordPress

 * @subpackage List_Table

 * @since 3.1.0

 * @access private

 */

class WP_Terms_List_Table extends WP_List_Table {

	var $callback_args;

	function __construct( $args = array() ) {

		global $post_type, $taxonomy, $action, $tax;

		parent::__construct( array(

			'plural' => 'tags',

			'singular' => 'tag',

			'screen' => isset( $args['screen'] ) ? $args['screen'] : null,

		) );

		$action    = $this->screen->action;

		$post_type = $this->screen->post_type;

		$taxonomy  = $this->screen->taxonomy;

		if ( empty( $taxonomy ) )

			$taxonomy = 'post_tag';

		if ( ! taxonomy_exists( $taxonomy ) )

			wp_die( __( 'Invalid taxonomy' ) );

		$tax = get_taxonomy( $taxonomy );

		// @todo Still needed? Maybe just the show_ui part.

		if ( empty( $post_type ) || !in_array( $post_type, get_post_types( array( 'show_ui' => true ) ) ) )

			$post_type = 'post';

	}

	function ajax_user_can() {

		return current_user_can( get_taxonomy( $this->screen->taxonomy )->cap->manage_terms );

	}

	function prepare_items() {

		$tags_per_page = $this->get_items_per_page( 'edit_' . $this->screen->taxonomy . '_per_page' );

		if ( 'post_tag' == $this->screen->taxonomy ) {

			$tags_per_page = apply_filters( 'edit_tags_per_page', $tags_per_page );

			$tags_per_page = apply_filters( 'tagsperpage', $tags_per_page ); // Old filter

		} elseif ( 'category' == $this->screen->taxonomy ) {

			$tags_per_page = apply_filters( 'edit_categories_per_page', $tags_per_page ); // Old filter

		}

		$search = !empty( $_REQUEST['s'] ) ? trim( wp_unslash( $_REQUEST['s'] ) ) : '';

		$args = array(

			'search' => $search,

			'page' => $this->get_pagenum(),

			'number' => $tags_per_page,

		);

		if ( !empty( $_REQUEST['orderby'] ) )

			$args['orderby'] = trim( wp_unslash( $_REQUEST['orderby'] ) );

		if ( !empty( $_REQUEST['order'] ) )

			$args['order'] = trim( wp_unslash( $_REQUEST['order'] ) );

		$this->callback_args = $args;

		$this->set_pagination_args( array(

			'total_items' => wp_count_terms( $this->screen->taxonomy, compact( 'search' ) ),

			'per_page' => $tags_per_page,

		) );

	}

	function has_items() {

		// todo: populate $this->items in prepare_items()

		return true;

	}

	function get_bulk_actions() {

		$actions = array();

		$actions['delete'] = __( 'Delete' );

		return $actions;

	}

	function current_action() {

		if ( isset( $_REQUEST['action'] ) && isset( $_REQUEST['delete_tags'] ) && ( 'delete' == $_REQUEST['action'] || 'delete' == $_REQUEST['action2'] ) )

			return 'bulk-delete';

		return parent::current_action();

	}

	function get_columns() {

		$columns = array(

			'cb'          => '<input type="checkbox" />',

			'name'        => _x( 'Name', 'term name' ),

			'description' => __( 'Description' ),

			'slug'        => __( 'Slug' ),

		);

		if ( 'link_category' == $this->screen->taxonomy ) {

			$columns['links'] = __( 'Links' );

		} else {

			$post_type_object = get_post_type_object( $this->screen->post_type );

			$columns['posts'] = $post_type_object ? $post_type_object->labels->name : __( 'Posts' );

		}

		return $columns;

	}

	function get_sortable_columns() {

		return array(

			'name'        => 'name',

			'description' => 'description',

			'slug'        => 'slug',

			'posts'       => 'count',

			'links'       => 'count'

		);

	}

	function display_rows_or_placeholder() {

		$taxonomy = $this->screen->taxonomy;

		$args = wp_parse_args( $this->callback_args, array(

			'page' => 1,

			'number' => 20,

			'search' => '',

			'hide_empty' => 0

		) );

		extract( $args, EXTR_SKIP );

		$args['offset'] = $offset = ( $page - 1 ) * $number;

		// convert it to table rows

		$count = 0;

		$terms = array();

		if ( is_taxonomy_hierarchical( $taxonomy ) && !isset( $orderby ) ) {

			// We'll need the full set of terms then.

			$args['number'] = $args['offset'] = 0;

		}

		$terms = get_terms( $taxonomy, $args );

		if ( empty( $terms ) ) {

			list( $columns, $hidden ) = $this->get_column_info();

			echo '<tr class="no-items"><td class="colspanchange" colspan="' . $this->get_column_count() . '">';

			$this->no_items();

			echo '</td></tr>';

			return;

		}

		if ( is_taxonomy_hierarchical( $taxonomy ) && !isset( $orderby ) ) {

			if ( !empty( $search ) ) // Ignore children on searches.

				$children = array();

			else

				$children = _get_term_hierarchy( $taxonomy );

			// Some funky recursion to get the job done( Paging & parents mainly ) is contained within, Skip it for non-hierarchical taxonomies for performance sake

			$this->_rows( $taxonomy, $terms, $children, $offset, $number, $count );

		} else {

			$terms = get_terms( $taxonomy, $args );

			foreach ( $terms as $term )

				$this->single_row( $term );

			$count = $number; // Only displaying a single page.

		}

	}

	function _rows( $taxonomy, $terms, &$children, $start, $per_page, &$count, $parent = 0, $level = 0 ) {

		$end = $start + $per_page;

		foreach ( $terms as $key => $term ) {

			if ( $count >= $end )

				break;

			if ( $term->parent != $parent && empty( $_REQUEST['s'] ) )

				continue;

			// If the page starts in a subtree, print the parents.

			if ( $count == $start && $term->parent > 0 && empty( $_REQUEST['s'] ) ) {

				$my_parents = $parent_ids = array();

				$p = $term->parent;

				while ( $p ) {

					$my_parent = get_term( $p, $taxonomy );

					$my_parents[] = $my_parent;

					$p = $my_parent->parent;

					if ( in_array( $p, $parent_ids ) ) // Prevent parent loops.

						break;

					$parent_ids[] = $p;

				}

				unset( $parent_ids );

				$num_parents = count( $my_parents );

				while ( $my_parent = array_pop( $my_parents ) ) {

					echo "\t";

					$this->single_row( $my_parent, $level - $num_parents );

					$num_parents--;

				}

			}

			if ( $count >= $start ) {

				echo "\t";

				$this->single_row( $term, $level );

			}

			++$count;

			unset( $terms[$key] );

			if ( isset( $children[$term->term_id] ) && empty( $_REQUEST['s'] ) )

				$this->_rows( $taxonomy, $terms, $children, $start, $per_page, $count, $term->term_id, $level + 1 );

		}

	}

	function single_row( $tag, $level = 0 ) {

		static $row_class = '';

		$row_class = ( $row_class == '' ? ' class="alternate"' : '' );

		$this->level = $level;

		echo '<tr id="tag-' . $tag->term_id . '"' . $row_class . '>';

		$this->single_row_columns( $tag );

		echo '</tr>';

	}

	function column_cb( $tag ) {

		$default_term = get_option( 'default_' . $this->screen->taxonomy );

		if ( current_user_can( get_taxonomy( $this->screen->taxonomy )->cap->delete_terms ) && $tag->term_id != $default_term )

			return '<label class="screen-reader-text" for="cb-select-' . $tag->term_id . '">' . sprintf( __( 'Select %s' ), $tag->name ) . '</label>'

				. '<input type="checkbox" name="delete_tags[]" value="' . $tag->term_id . '" id="cb-select-' . $tag->term_id . '" />';

		return ' ';

	}

	function column_name( $tag ) {

		$taxonomy = $this->screen->taxonomy;

		$tax = get_taxonomy( $taxonomy );

		$default_term = get_option( 'default_' . $taxonomy );

		$pad = str_repeat( '— ', max( 0, $this->level ) );

		$name = apply_filters( 'term_name', $pad . ' ' . $tag->name, $tag );

		$qe_data = get_term( $tag->term_id, $taxonomy, OBJECT, 'edit' );

		$edit_link = esc_url( get_edit_term_link( $tag->term_id, $taxonomy, $this->screen->post_type ) );

		$out = '<strong><a class="row-title" href="' . $edit_link . '" title="' . esc_attr( sprintf( __( 'Edit &#8220;%s&#8221;' ), $name ) ) . '">' . $name . '</a></strong><br />';

		$actions = array();

		if ( current_user_can( $tax->cap->edit_terms ) ) {

			$actions['edit'] = '<a href="' . $edit_link . '">' . __( 'Edit' ) . '</a>';

			$actions['inline hide-if-no-js'] = '<a href="#" class="editinline">' . __( 'Quick&nbsp;Edit' ) . '</a>';

		}

		if ( current_user_can( $tax->cap->delete_terms ) && $tag->term_id != $default_term )

			$actions['delete'] = "<a class='delete-tag' href='" . wp_nonce_url( "edit-tags.php?action=delete&amp;taxonomy=$taxonomy&amp;tag_ID=$tag->term_id", 'delete-tag_' . $tag->term_id ) . "'>" . __( 'Delete' ) . "</a>";

		if ( $tax->public )

			$actions['view'] = '<a href="' . get_term_link( $tag ) . '">' . __( 'View' ) . '</a>';

		$actions = apply_filters( 'tag_row_actions', $actions, $tag );

		$actions = apply_filters( "{$taxonomy}_row_actions", $actions, $tag );

		$out .= $this->row_actions( $actions );

		$out .= '<div class="hidden" id="inline_' . $qe_data->term_id . '">';

		$out .= '<div class="name">' . $qe_data->name . '</div>';

		$out .= '<div class="slug">' . apply_filters( 'editable_slug', $qe_data->slug ) . '</div>';

		$out .= '<div class="parent">' . $qe_data->parent . '</div></div>';

		return $out;

	}

	function column_description( $tag ) {

		return $tag->description;

	}

	function column_slug( $tag ) {

		return apply_filters( 'editable_slug', $tag->slug );

	}

	function column_posts( $tag ) {

		$count = number_format_i18n( $tag->count );

		$tax = get_taxonomy( $this->screen->taxonomy );

		$ptype_object = get_post_type_object( $this->screen->post_type );

		if ( ! $ptype_object->show_ui )

			return $count;

		if ( $tax->query_var ) {

			$args = array( $tax->query_var => $tag->slug );

		} else {

			$args = array( 'taxonomy' => $tax->name, 'term' => $tag->slug );

		}

		if ( 'post' != $this->screen->post_type )

			$args['post_type'] = $this->screen->post_type;

		if ( 'attachment' == $this->screen->post_type )

			return "<a href='" . esc_url ( add_query_arg( $args, 'upload.php' ) ) . "'>$count</a>";

		return "<a href='" . esc_url ( add_query_arg( $args, 'edit.php' ) ) . "'>$count</a>";

	}

	function column_links( $tag ) {

		$count = number_format_i18n( $tag->count );

		if ( $count )

			$count = "<a href='link-manager.php?cat_id=$tag->term_id'>$count</a>";

		return $count;

	}

	function column_default( $tag, $column_name ) {

		return apply_filters( "manage_{$this->screen->taxonomy}_custom_column", '', $column_name, $tag->term_id );

	}

	/**

	 * Outputs the hidden row displayed when inline editing

	 *

	 * @since 3.1.0

	 */

	function inline_edit() {

		$tax = get_taxonomy( $this->screen->taxonomy );

		if ( ! current_user_can( $tax->cap->edit_terms ) )

			return;

?>

	<form method="get" action=""><table style="display: none"><tbody id="inlineedit">

		<tr id="inline-edit" class="inline-edit-row" style="display: none"><td colspan="<?php echo $this->get_column_count(); ?>" class="colspanchange">

			<fieldset><div class="inline-edit-col">

				<h4><?php _e( 'Quick Edit' ); ?></h4>

				<label>

					<span class="title"><?php _ex( 'Name', 'term name' ); ?></span>

					<span class="input-text-wrap"><input type="text" name="name" class="ptitle" value="" /></span>

				</label>

	<?php if ( !global_terms_enabled() ) { ?>

				<label>

					<span class="title"><?php _e( 'Slug' ); ?></span>

					<span class="input-text-wrap"><input type="text" name="slug" class="ptitle" value="" /></span>

				</label>

	<?php } ?>

			</div></fieldset>

	<?php

		$core_columns = array( 'cb' => true, 'description' => true, 'name' => true, 'slug' => true, 'posts' => true );

		list( $columns ) = $this->get_column_info();

		foreach ( $columns as $column_name => $column_display_name ) {

			if ( isset( $core_columns[$column_name] ) )

				continue;

			do_action( 'quick_edit_custom_box', $column_name, 'edit-tags', $this->screen->taxonomy );

		}

	?>

		<p class="inline-edit-save submit">

			<a accesskey="c" href="#inline-edit" class="cancel button-secondary alignleft"><?php _e( 'Cancel' ); ?></a>

			<a accesskey="s" href="#inline-edit" class="save button-primary alignright"><?php echo $tax->labels->update_item; ?></a>

			<span class="spinner"></span>

			<span class="error" style="display:none;"></span>

			<?php wp_nonce_field( 'taxinlineeditnonce', '_inline_edit', false ); ?>

			<input type="hidden" name="taxonomy" value="<?php echo esc_attr( $this->screen->taxonomy ); ?>" />

			<input type="hidden" name="post_type" value="<?php echo esc_attr( $this->screen->post_type ); ?>" />

			<br class="clear" />

		</p>

		</td></tr>

		</tbody></table></form>

	<?php

	}

}