Add more JS to convert bulk-edit inputs, and ensure bulk-editing only…

… saves one term. Another that fixes #3

WDS_Taxonomy_Radio.class.php

@@ -17,7 +17,7 @@
  * $custom_tax_mb->indented = false;
  *
  * @link  http://codex.wordpress.org/Function_Reference/add_meta_box#Parameters
- * @version  0.1.3
+ * @version  0.1.4
  */
 class WDS_Taxonomy_Radio {
 
@@ -79,6 +79,18 @@ class WDS_Taxonomy_Radio {
 	 */
 	public $indented = true;
 
+	/**
+	 * Checks if there is a bulk-edit term to set
+	 * @var boolean|term object
+	 */
+	public $to_set = false;
+
+	/**
+	 * Array of post ids whose terms have been reset from bulk-edit. (prevents recursion)
+	 * @var array
+	 */
+	public $single_term_set = array();
+
 	/**
 	 * Initiates our metabox action
 	 * @param string $tax_slug      Taxonomy slug
@@ -92,6 +104,31 @@ public function __construct( $tax_slug, $post_types = array() ) {
 
 		add_action( 'add_meta_boxes', array( $this, 'add_radio_box' ) );
 		add_action( 'admin_footer', array( $this, 'js_checkbox_transform' ) );
+
+		// Handle bulk-editing
+		if ( isset( $_REQUEST['bulk_edit'] ) && 'Update' == $_REQUEST['bulk_edit'] ) {
+
+			// Get wp tax name designation
+			$name = $this->slug;
+			if ( 'category' == $name )
+				$name = 'post_category';
+			if ( 'tag' == $name )
+				$name = 'post_tag';
+
+			// If this tax name exists in the query arg
+			if ( isset( $_REQUEST[ $name ] ) && is_array( $_REQUEST[ $name ] ) ) {
+				$this->to_set = end( $_REQUEST[ $name ] );
+			} elseif ( isset( $_REQUEST['tax_input'][ $name ] ) && is_array( $_REQUEST['tax_input'][ $name ] ) ) {
+				$this->to_set = end( $_REQUEST['tax_input'][ $name ] );
+			}
+
+			// Then get it's term object
+			if ( $this->to_set ) {
+				$this->to_set = get_term( $this->to_set, $this->slug );
+				// And hook in our re-save action
+				add_action( 'set_object_terms', array( $this, 'maybe_resave_terms' ), 10, 5 );
+			}
+		}
 	}
 
 	/**
@@ -159,25 +196,80 @@ public function js_checkbox_transform() {
 
 		?>
 		<script type="text/javascript">
+			// Handles changing input types to radios for WDS_Taxonomy_Radio
 			jQuery(document).ready(function($){
-				$('.editinline').on( 'click', function( evt ) {
+				var $postsFilter = $('#posts-filter');
+				var $theList = $postsFilter.find('#the-list');
+
+				// Handles changing the input type attributes
+				var changeToRadio = function( $context ) {
+					$context = $context ? $context : $theList;
+					var $taxListInputs = $context.find( '.<?php echo $this->slug; ?>-checklist li input' );
+					if ( $taxListInputs.length ) {
+						// loop and switch input types
+						$taxListInputs.each( function() {
+							$(this).attr( 'type', 'radio' ).addClass('transformed-to-radio');
+						});
+					}
+				};
+
+				$postsFilter
+					// Handle converting radios in bulk-edit row
+					.on( 'click', '#doaction, #doaction2', function(){
+						var name = $(this).attr('id').substr(2);
+						if ( 'edit' === $( 'select[name="' + name + '"]' ).val() ) {
+							setTimeout( function() {
+								changeToRadio( $theList.find('#bulk-edit') );
+							}, 50 );
+						}
+					})
+					// when clicking new radio inputs, be sure to uncheck all but the one clicked
+					.on( 'change', '.transformed-to-radio', function() {
+						var $this = $(this);
+						$siblings = $this.parents( '.<?php echo $this->slug; ?>-checklist' ).find( 'li .transformed-to-radio' ).prop( 'checked', false );
+						$this.prop( 'checked', true );
+					});
+
+				// Handle converting radios in inline-edit rows
+				$theList.find('.editinline').on( 'click', function() {
 					var $this = $(this);
 					setTimeout( function() {
 						var $editRow = $this.parents( 'tr' ).next();
-						var $taxListInputs = $editRow.find( '.<?php echo $this->slug; ?>-checklist li input' );
-						if ( $taxListInputs.length ) {
-							// loop and switch input types
-							$taxListInputs.each( function() {
-								$(this).attr( 'type', 'radio' );
-							});
-						}
+						changeToRadio( $editRow );
 					}, 50 );
 				});
 			});
 		</script>
 		<?php
 	}
 
+	/**
+	 * Handles resaving terms to post when bulk-editing so that only one term will be applied
+	 * @since  0.1.4
+	 * @param  int    $object_id  Object ID.
+	 * @param  array  $terms      An array of object terms.
+	 * @param  array  $tt_ids     An array of term taxonomy IDs.
+	 * @param  string $taxonomy   Taxonomy slug.
+	 * @param  bool   $append     Whether to append new terms to the old terms.
+	 * @param  array  $old_tt_ids Old array of term taxonomy IDs.
+	 */
+	public function maybe_resave_terms( $object_id, $terms, $tt_ids, $taxonomy, $append ) {
+		if (
+			// if the terms being edited are not this taxonomy
+			$taxonomy != $this->slug
+			// or we already did our magic
+			|| in_array( $object_id, $this->single_term_set, true )
+		) {
+			// Then bail
+			return;
+		}
+
+		// Prevent recursion
+		$this->single_term_set[] = $object_id;
+		// Replace terms with the one term
+		wp_set_object_terms( $object_id, $this->to_set->slug, $taxonomy, $append );
+	}
+
 	/**
 	 * Gets the taxonomy object from the slug
 	 * @return object Taxonomy object