facetapi-1804418-facet_api-allow_multiple_clicks.patch

 facetapi.js                       | 96 +++++++++++++++++++++++++++++++++++++++
 plugins/facetapi/widget_links.inc | 13 ++++++
 2 files changed, 109 insertions(+)

diff --git a/facetapi.js b/facetapi.js
index 1fed227..59c06f8 100644
--- a/facetapi.js
+++ b/facetapi.js
@@ -72,6 +72,96 @@ Drupal.facetapi.Redirect.prototype.gotoHref = function() {
 }
 
 /**
+ * Constructor for the facetapi facet class.
+ */
+Drupal.facetapi.Facet = function(filter, link_id, ul_id) {
+  this.filter = filter;
+  this.link_id = link_id;
+  this.ul_id = ul_id;
+}
+
+Drupal.facetapi.Facet.prototype.toggleCheckbox = function() {
+  checkbox = jQuery('#'+this.link_id).prev('input');
+  if (checkbox.attr('checked')) {
+    checkbox.attr('checked', false);
+  }
+  else {
+    checkbox.attr('checked', 'checked');
+  }
+}
+
+/**
+ * Method to add/remove the filter to all the other items in the list
+ */
+Drupal.facetapi.Facet.prototype.toggleFilter = function() {
+  var current_filter = this.filter;
+  var tick_added;
+  
+  // Work out whether we are responding to an option being ticked or unticked
+  jQuery.each($('ul#'+this.ul_id+' li'), function(index, value) {
+    if (jQuery(value).children('a').attr('data-facet') == current_filter)
+    {
+      tick_added = jQuery(value).children('input').attr('checked');
+    }
+  });
+  
+  // Add (remove) the relevant option from all filters within the same facet
+  jQuery.each($('ul#'+this.ul_id+' li'), function(index, value) {
+    // Invert the add/remove behaviour if we're on the actual checkbox that has
+    // been changed, because the link should be ready for when it is NEXT clicked
+    // (we are already processing this click).
+    if (jQuery(value).children('a').attr('data-facet') == current_filter)
+    {
+      var add_filter = !tick_added;
+    }
+    else {
+      var add_filter = tick_added;
+    }
+
+    // Calculate the new destination URLs with this filter added (removed)
+    if (add_filter) {
+      var new_href = jQuery(this).children('a').attr('href') + '&f[]=' + encodeURIComponent(current_filter);
+    }
+    else {
+      var new_href = jQuery(this).children('a').attr('href');
+      new_href = new_href.replace(encodeURIComponent(current_filter).replace('*', '%2A'),'');
+    }
+
+
+    /* Replace the existing destinations, both href and javascript */
+
+    // First get variables for our link and checkbox, and remove our old handlers
+    var $link = jQuery(this).children('a').unbind('click');
+    var checkbox = jQuery(this).children('input').unbind('click');
+
+    // Replace the URL on the checkbox and link
+    redirect = new Drupal.facetapi.Redirect(new_href);
+    checkbox.click($.proxy(redirect, 'gotoHref'));
+    // Use a tiny timeout so that the browser starts navigating to the link
+    // before we change where we're going to navigate to
+    setTimeout(function() {$link.attr('href', new_href);}, 50);
+    
+
+    // We had to remove and re-bind the toggleFilter call, so it gets called
+    // AFTER the redirect in all cases
+    facet = new Drupal.facetapi.Facet($link.attr('data-facet'), $link.attr('id'), $link.parent().parent().attr('id'));
+    $link.click($.proxy(facet, 'toggleCheckbox'));
+    $link.click($.proxy(facet, 'toggleFilter'));
+    checkbox.click($.proxy(facet, 'toggleFilter'));
+  });
+
+  // Hide the other facets while we're processing this one
+  jQuery('ul.facetapi-facetapi-checkbox-links').css('visibility', 'hidden');
+  jQuery('#block-iexplore-departure-solr-price-range-filter').css('visibility', 'hidden');
+  jQuery('ul.facetapi-facetapi-checkbox-links').parent().addClass('ajax-loading');
+  jQuery('#iexplore-price-range-filter-wrapper').addClass('ajax-loading');
+
+  // But leave the one we're interacting with alone
+  $('ul#'+this.ul_id).css('visibility', 'visible');
+  $('ul#'+this.ul_id).parent().removeClass('ajax-loading');
+}
+
+/**
  * Replace an unclick link with a checked checkbox.
  */
 Drupal.facetapi.makeCheckbox = function() {
@@ -93,6 +183,12 @@ Drupal.facetapi.makeCheckbox = function() {
     var href = $link.attr('href');
     redirect = new Drupal.facetapi.Redirect(href);
     checkbox.click($.proxy(redirect, 'gotoHref'));
+
+    facet = new Drupal.facetapi.Facet($link.attr('data-facet'), $link.attr('id'), $link.parent().parent().attr('id'));
+    $link.click($.proxy(facet, 'toggleCheckbox'));
+    $link.click($.proxy(facet, 'toggleFilter'));
+    checkbox.click($.proxy(facet, 'toggleFilter'));
+    
     if (active) {
       // Add the checkbox, hide the link.
       $link.before(checkbox).hide();
diff --git a/plugins/facetapi/widget_links.inc b/plugins/facetapi/widget_links.inc
index fa4862c..5ff0d3f 100644
--- a/plugins/facetapi/widget_links.inc
+++ b/plugins/facetapi/widget_links.inc
@@ -38,6 +38,9 @@ class FacetapiWidgetLinks extends FacetapiWidget {
    */
   public function execute() {
     $element = &$this->build[$this->facet['field alias']];
+    foreach ($element as $index => $item) {
+      $element[$index]['#facetapi_facet_id'] = $this->facet['name'];
+    }
 
     // Sets each item's theme hook, builds item list.
     $this->setThemeHooks($element);
@@ -114,6 +117,16 @@ class FacetapiWidgetLinks extends FacetapiWidget {
         $variables['options']['attributes']['class'][] = 'facetapi-zero-results';
       }
 
+      if (isset($item['#facetapi_facet_id'])) {
+        $variables['options']['attributes']['data-facet'] = t('@facet:@value', array(
+          '@facet' => $item['#facetapi_facet_id'],
+          '@value' => $value
+        ));
+      }
+
+      // Add an ID to identify this link.
+      $variables['options']['attributes']['id'] = drupal_html_id('facetapi-link');
+
       // If the item has no children, it is a leaf.
       if (empty($item['#item_children'])) {
         $row['class'][] = 'leaf';