#323112 by dmitrig01, kkaefer, quicksketch, frando and many many more: Now...

#323112 by dmitrig01, kkaefer, quicksketch, frando and many many more: Now presenting... Vertical Tabs. Fantastic new UI improvement for node forms and hopefully more in the future.

includes/common.inc

@@ -3368,6 +3368,28 @@ function drupal_render(&$elements) {
     }
   }
 
+  // Add additional CSS and JavaScript files associated with this element.
+  foreach (array('css', 'js') as $kind) {
+    if (!empty($elements['#attached_' . $kind]) && is_array($elements['#attached_' . $kind])) {
+      foreach ($elements['#attached_' . $kind] as $data => $options) {
+        // If the value is not an array, it's a filename and passed as first
+        // (and only) argument.
+        if (!is_array($options)) {
+          $data = $options;
+          $options = NULL;
+        }
+        // When drupal_add_js with 'type' => 'setting' is called, the first
+        // parameter ($data) is an array. Arrays can't be keys in PHP, so we
+        // have to get $data from the value array.
+        if (is_numeric($data)) {
+          $data = $options['data'];
+          unset($options['data']);
+        }
+        call_user_func('drupal_add_' . $kind, $data, $options);
+      }
+    }
+  }
+
   // Get the children of the element, sorted by weight.
   $children = element_children($elements, TRUE);
 
@@ -3750,6 +3772,9 @@ function drupal_common_theme() {
     'text_format_wrapper' => array(
       'arguments' => array('element' => NULL),
     ),
+    'vertical_tabs' => array(
+      'arguments' => array('element' => NULL),
+    ),
   );
 }
 

includes/form.inc

@@ -227,6 +227,7 @@ function form_state_defaults() {
     'method' => 'post',
     'rerender' => TRUE,
     'programmed' => FALSE,
+    'groups' => array(),
   );
 }
 
@@ -286,6 +287,10 @@ function drupal_rebuild_form($form_id, &$form_state, $form_build_id = NULL) {
   // then process the form for rendering.
   $form_state['input'] = array();
 
+  // Also clear out all group associations as these might be different
+  // when rerendering the form.
+  $form_state['groups'] = array();
+
   // Do not call drupal_process_form(), since it would prevent the rebuilt form
   // to submit.
   $form = form_builder($form_id, $form, $form_state);
@@ -939,7 +944,8 @@ function form_error(&$element, $message = '') {
 /**
  * Walk through the structured form array, adding any required
  * properties to each element and mapping the incoming $_POST
- * data to the proper elements.
+ * data to the proper elements. Also, execute any #process handlers
+ * attached to a specific element.
  *
  * @param $form_id
  *   A unique string identifying the form for validation, submission,
@@ -972,9 +978,22 @@ function form_builder($form_id, $form, &$form_state) {
     }
   }
 
+  if (!isset($form['#id'])) {
+    $form['#id'] = form_clean_id('edit-' . implode('-', $form['#parents']));
+  }
   if (isset($form['#input']) && $form['#input']) {
     _form_builder_handle_input_element($form_id, $form, $form_state, $complete_form);
   }
+  // Allow for elements to expand to multiple elements, e.g., radios,
+  // checkboxes and files.
+  if (isset($form['#process']) && !$form['#processed']) {
+    foreach ($form['#process'] as $process) {
+      if (drupal_function_exists($process)) {
+        $form = $process($form, $form_state, $complete_form);
+      }
+    }
+    $form['#processed'] = TRUE;
+  }
   $form['#defaults_loaded'] = TRUE;
 
   // We start off assuming all form elements are in the correct order.
@@ -1062,8 +1081,7 @@ function form_builder($form_id, $form, &$form_state) {
 
 /**
  * Populate the #value and #name properties of input elements so they
- * can be processed and rendered. Also, execute any #process handlers
- * attached to a specific element.
+ * can be processed and rendered.
  */
 function _form_builder_handle_input_element($form_id, &$form, &$form_state, $complete_form) {
   if (!isset($form['#name'])) {
@@ -1080,9 +1098,6 @@ function _form_builder_handle_input_element($form_id, &$form, &$form_state, $com
     }
     array_unshift($form['#parents'], $name);
   }
-  if (!isset($form['#id'])) {
-    $form['#id'] = form_clean_id('edit-' . implode('-', $form['#parents']));
-  }
 
   if (!empty($form['#disabled'])) {
     $form['#attributes']['disabled'] = 'disabled';
@@ -1151,16 +1166,6 @@ function _form_builder_handle_input_element($form_id, &$form, &$form_state, $com
       }
     }
   }
-  // Allow for elements to expand to multiple elements, e.g., radios,
-  // checkboxes and files.
-  if (isset($form['#process']) && !$form['#processed']) {
-    foreach ($form['#process'] as $process) {
-      if (drupal_function_exists($process)) {
-        $form = $process($form, isset($edit) ? $edit : NULL, $form_state, $complete_form);
-      }
-    }
-    $form['#processed'] = TRUE;
-  }
   form_set_value($form, $form['#value'], $form_state);
 }
 
@@ -1597,6 +1602,7 @@ function theme_fieldset($element) {
       $element['#attributes']['class'] .= ' collapsed';
     }
   }
+  $element['#attributes']['id'] = $element['#id'];
 
   return '<fieldset' . drupal_attributes($element['#attributes']) . '>' . ($element['#title'] ? '<legend>' . $element['#title'] . '</legend>' : '') . (isset($element['#description']) && $element['#description'] ? '<div class="description">' . $element['#description'] . '</div>' : '') . (!empty($element['#children']) ? $element['#children'] : '') . (isset($element['#value']) ? $element['#value'] : '') . "</fieldset>\n";
 }
@@ -2143,7 +2149,6 @@ function form_process_checkboxes($element) {
  *   An associative array containing the properties and children of the
  *   tableselect element.
  *   Properties used: header, options, empty, js_select.
- *
  * @return
  *   A themed HTML string representing the table.
  *
@@ -2186,7 +2191,6 @@ function theme_tableselect($element) {
  * @param $element
  *   An associative array containing the properties and children of the
  *   tableselect element.
- *
  * @return
  *   The processed element.
  */
@@ -2247,6 +2251,142 @@ function form_process_tableselect($element) {
   return $element;
 }
 
+/**
+ * Adds fieldsets to the specified group or adds group members to this
+ * fieldset.
+ *
+ * @param $element
+ *   An associative array containing the properties and children of the
+ *   fieldset.
+ * @param $form_state
+ *   The $form_state array for the form this fieldset belongs to.
+ * @return
+ *   The processed element.
+ */
+function form_process_fieldset(&$element, &$form_state) {
+  $parents = implode('][', $element['#parents']);
+
+  // Add this fieldset to a group if one is set and if it's not being
+  // added to itself.
+  if (isset($element['#group']) && $element['#group'] != $parents) {
+    if (isset($form_state['groups'][$element['#group']]) && !empty($form_state['groups'][$element['#group']]['#group_exists'])) {
+      // Trick drupal_render() into believing this has already been output.
+      // The group widget will rerender this later. This only happens when the
+      // group is actually defined ('#group_exists' is TRUE). This prevents
+      // fieldsets from disappearing when the group they are associated to
+      // does not exist.
+      // If the group does not exist yet, the element's #printed value is left
+      // as is. As soon as the group is processed (fieldsets are also groups;
+      // see below), this element's #printed value is set to TRUE to prevent
+      // rendering in the original context.
+      $element['#printed'] = TRUE;
+    }
+
+    // Store a reference to this fieldset for the vertical tabs processing
+    // function.
+    $form_state['groups'][$element['#group']][] = &$element;
+  }
+
+  // Each fieldset can be a group itself and gets a reference to all
+  // elements in its group.
+  $form_state['groups'][$parents]['#group_exists'] = TRUE;
+  // There might already be elements associated with this group. Since the
+  // group did not exist yet at the time they were added to this group, they
+  // couldn't set #printed to TRUE (see above). We now know that this group
+  // does in fact exist and set #printed to TRUE to prevent rendering in the
+  // original context.
+  foreach (element_children($form_state['groups'][$parents]) as $key) {
+    $form_state['groups'][$parents][$key]['#printed'] = TRUE;
+  }
+  $element['#group_members'] = &$form_state['groups'][$parents];
+
+  // Contains form element summary functionalities.
+  drupal_add_js('misc/form.js', array('weight' => JS_LIBRARY + 1));
+
+  return $element;
+}
+
+/**
+ * Adds members of this group as actual elements for rendering.
+ *
+ * @param $element
+ *   An associative array containing the properties and children of the
+ *   fieldset.
+ * @return
+ *   The modified element with all group members.
+ */
+function form_pre_render_fieldset($element) {
+  if (!empty($element['#group_members'])) {
+    // Add the group members to this fieldset for rendering purposes only.
+    foreach (element_children($element['#group_members']) as $key) {
+      // This was set in form_process_fieldset so that fieldsets which are
+      // added to groups are not rendered at their original location.
+      // drupal_render_children() will set this back to TRUE.
+      unset($element['#group_members'][$key]['#printed']);
+      $element[] = &$element['#group_members'][$key];
+    }
+
+    // Resort the element's children after the group members have been added.
+    $element['#sorted'] = FALSE;
+  }
+
+  return $element;
+}
+
+/**
+ * Creates a group formatted as vertical tabs.
+ *
+ * @param $element
+ *   An associative array containing the properties and children of the
+ *   fieldset.
+ * @param $form_state
+ *   The $form_state array for the form this vertical tab widget belongs to.
+ * @return
+ *   The processed element.
+ */
+function form_process_vertical_tabs($element, &$form_state) {
+  // To save us from modifying the existing element and changing its #type,
+  // a new form element is created as a child. The default #process hooks
+  // are called automatically by the form renderer and we don't have to do
+  // that manually.
+  $element['group'] = array(
+    '#type' => 'fieldset',
+    '#theme_wrapper' => '',
+    '#parents' => $element['#parents'],
+  );
+
+  // The JavaScript stores the currently selected tab in this hidden
+  // field so that the active tab can be restored the next time the
+  // form is rendered, e.g. on preview pages or when form validation
+  // fails.
+  $name = implode('__', $element['#parents']);
+  if (isset($form_state['values'][$name . '__active_tab'])) {
+    $element['#default_tab'] = $form_state['values'][$name . '__active_tab'];
+  }
+  $element[$name . '__active_tab'] = array(
+    '#type' => 'hidden',
+    '#default_value' => $element['#default_tab'],
+    '#attributes' => array('class' => 'vertical-tabs-active-tab'),
+  );
+
+  return $element;
+}
+
+/**
+ * Makes the element's children fieldsets be vertical tabs.
+ *
+ * @param $element
+ *   An associative array containing the properties and children of the
+ *   fieldset.
+ */
+function theme_vertical_tabs(&$element) {
+  // Add required JavaScript and Stylesheet.
+  drupal_add_js('misc/vertical-tabs.js', array('weight' => JS_DEFAULT - 1));
+  drupal_add_css('misc/vertical-tabs.css');
+
+  return '<div class="vertical-tabs-panes">' . $element['#children'] . '</div>';
+}
+
 /**
  * Theme a form submit button.
  *

misc/collapse.js

@@ -60,6 +60,14 @@ Drupal.behaviors.collapse = {
         fieldset.removeClass('collapsed');
       }
 
+      var summary = $('<span class="summary"></span>');
+      fieldset.
+        bind('summaryUpdated', function() {
+          var text = $.trim(fieldset.getSummary());
+          summary.html(text ? ' (' + text + ')' : '');
+        })
+        .trigger('summaryUpdated');
+
       // Turn the legend into a clickable link and wrap the contents of the fieldset
       // in a div for easier animation
       var text = this.innerHTML;
@@ -72,6 +80,7 @@ Drupal.behaviors.collapse = {
           }
           return false;
         }))
+        .append(summary)
         .after($('<div class="fieldset-wrapper"></div>')
         .append(fieldset.children(':not(legend):not(.action)')))
         .addClass('collapse-processed');

misc/form.js

 // $Id$
 (function($) {
 
+/**
+ * Retrieves the summary for the first element.
+ */
+$.fn.getSummary = function() {
+  var callback = this.data('summaryCallback');
+  return (this[0] && callback) ? $.trim(callback(this[0])) : '';
+};
+
+/**
+ * Sets the summary for all matched elements.
+ *
+ * @param callback
+ *   Either a function that will be called each time the summary is
+ *   retrieved or a string (which is returned each time).
+ */
+$.fn.setSummary = function(callback) {
+  var that = this;
+
+  // To facilitate things, the callback should always be a function. If it's
+  //  not, we wrap it into an anonymous function which just returns the value.
+  if (typeof callback != 'function') {
+    var val = callback;
+    callback = function() { return val; };
+  }
+
+  return this
+    .data('summaryCallback', callback)
+    // To prevent duplicate events, the handlers are first removed and then
+    // (re-)added.
+    .unbind('formUpdated.summary')
+    .bind('formUpdated.summary', function() {
+      that.trigger('summaryUpdated');
+    })
+    // The actual summaryUpdated handler doesn't fire when the callback is
+    // changed, so we have to do this manually.
+    .trigger('summaryUpdated');
+};
+
+/**
+ * Sends a 'formUpdated' event each time a form element is modified.
+ */
+Drupal.behaviors.formUpdated = {
+  attach: function(context) {
+    // These events are namespaced so that we can remove them later.
+    var events = 'change.formUpdated click.formUpdated blur.formUpdated keyup.formUpdated';
+    $(context)
+      // Since context could be an input element itself, it's added back to
+      // the jQuery object and filtered again.
+      .find(':input').andSelf().filter(':input')
+      // To prevent duplicate events, the handlers are first removed and then
+      // (re-)added.
+      .unbind(events).bind(events, function() {
+        $(this).trigger('formUpdated');
+      });
+  }
+};
+
 Drupal.behaviors.multiselectSelector = {
   attach: function(context, settings) {
     // Automatically selects the right radio button in a multiselect control.

misc/vertical-tabs-rtl.css

+/* $Id */
+
+.vertical-tabs {
+  margin-left: 0;
+  margin-right: 15em;
+}
+.vertical-tabs-list {
+  margin-right: -15em;
+  right: 0;
+  float: right;
+}
+.vertical-tabs-list li.selected {
+  border-left-width: 0;
+  border-right-width: 1px;
+}

misc/vertical-tabs.css

+/* $Id */
+
+.vertical-tabs {
+  margin: 1em 0 1em 15em;
+  border: 1px solid #ccc;
+}
+.vertical-tabs-list {
+  width: 15em;
+  list-style: none;
+  list-style-image: none; /* IE6 */
+  border-top: 1px solid #ccc;
+  padding: 0;
+  position: relative; /* IE6 */
+  margin: -1px -100% -1px 0;
+  left: -15em;
+  float: left;
+}
+.vertical-tabs .vertical-tabs-panes fieldset.vertical-tabs-pane {
+  margin: 0 !important;
+  padding: 0 1em;
+  border: 0;
+}
+.vertical-tabs .vertical-tabs-panes fieldset.vertical-tabs-pane legend {
+  display: none;
+}
+
+/* Layout of each tab */
+.vertical-tabs-list li {
+  background: #eee;
+  border: 1px solid #ccc;
+  border-top: 0;
+  padding: 0;
+  margin: 0;
+  height: 1%;
+}
+.vertical-tabs-list li a {
+  display: block;
+  text-decoration: none;
+  padding: 0.5em 0.6em;
+  line-height: 1.3em;
+  height: 1%;
+}
+.vertical-tabs-list li a:focus {
+  position: relative;
+  z-index: 5;
+}
+.vertical-tabs-list li a:hover {
+  text-decoration: none;
+}
+.vertical-tabs-list li.selected {
+  background: #fff;
+  border-right-width: 0;
+  position: relative;
+}
+.vertical-tabs-list li.selected a:focus {
+  outline: 0;
+}
+.vertical-tabs-list li.selected .title {
+  font-weight: bold;
+  color: #000;
+}
+.vertical-tabs-list .summary {
+  display: block;
+}
+.vertical-tabs ul.vertical-tabs-list .summary {
+  line-height: normal;
+  margin-bottom: 0;
+}

misc/vertical-tabs.js

+// $Id$
+
+(function($) {
+
+/**
+ * This script transforms a set of fieldsets into a stack of vertical
+ * tabs. Another tab pane can be selected by clicking on the respective
+ * tab.
+ *
+ * Each tab may have a summary which can be updated by another
+ * script. For that to work, each fieldset has an associated 
+ * 'verticalTabCallback' (with jQuery.data() attached to the fieldset),
+ * which is called every time the user performs an update to a form
+ * element inside the tab pane.
+ */
+Drupal.behaviors.verticalTabs = {
+  attach: function(context) {
+    $('.vertical-tabs-panes:not(.vertical-tabs-processed)', context).each(function() {
+      var focusID = $(':hidden.vertical-tabs-active-tab', this).val();
+      var focus;
+      // Create the tab column.
+      var list = $('<ul class="vertical-tabs-list"></ul>');
+      $(this).wrap('<div class="vertical-tabs clearfix"></div>').before(list);
+
+      // Transform each fieldset into a tab.
+      $('> fieldset', this).each(function() {
+        var tab = new Drupal.verticalTab({ title: $('> legend', this).text(), fieldset: $(this) });
+        list.append(tab.item);
+        $(this)
+          .removeClass('collapsible collapsed')
+          .addClass('vertical-tabs-pane')
+          .data('verticalTab', tab);
+        if (this.id == focusID) {
+          focus = $(this);
+        }
+      });
+
+      $('> li:first', list).addClass('first');
+      $('> li:last', list).addClass('last');
+
+      if (!focus) {
+        focus = $('> .vertical-tabs-pane:first', this);
+      }
+      focus.data('verticalTab').focus();
+    }).addClass('vertical-tabs-processed');
+  }
+};
+
+/**
+ * The vertical tab object represents a single tab within a tab group.
+ *
+ * @param settings
+ *   An object with the following keys:
+ *   - title: The name of the tab.
+ *   - fieldset: The jQuery object of the fieldset that is the tab pane.
+ */
+Drupal.verticalTab = function(settings) {
+  var that = this;
+  $.extend(this, settings, Drupal.theme('verticalTab', settings));
+
+  this.link.click(function() {
+    that.focus();
+    return false;
+  });
+
+  this.fieldset
+    .bind('summaryUpdated', function() {
+      that.updateSummary();
+    })
+    .trigger('summaryUpdated');
+};
+
+Drupal.verticalTab.prototype = {
+  // Displays the tab's content pane.
+  focus: function() {
+    this.fieldset
+      .siblings('fieldset.vertical-tabs-pane')
+        .each(function() {
+          var tab = $(this).data('verticalTab');
+          tab.fieldset.hide();
+          tab.item.removeClass('selected');
+        })
+        .end()
+      .show()
+      .siblings(':hidden.vertical-tabs-active-tab')
+        .val(this.fieldset.attr('id'));
+    this.item.addClass('selected');
+  },
+
+  // Updates the tab's summary.
+  updateSummary: function() {
+    this.summary.html(this.fieldset.getSummary());
+  }
+};
+
+/**
+ * Theme function for a vertical tab.
+ *
+ * @param settings
+ *   An object with the following keys:
+ *   - title: The name of the tab.
+ * @return
+ *   This function has to return an object with at least these keys:
+ *   - item: The root tab jQuery element
+ *   - link: The anchor tag that acts as the clickable area of the tab
+ *       (jQuery version)
+ *   - summary: The jQuery element that contains the tab summary
+ */
+Drupal.theme.prototype.verticalTab = function(settings) {
+  var tab = {};
+  tab.item = $('<li class="vertical-tab-button"></li>')
+    .append(tab.link = $('<a href="#"></a>')
+      .append(tab.title = $('<span class="title"></span>').text(settings.title))
+      .append(tab.summary = $('<span class="summary"></span>')
+    )
+  );
+  return tab;
+};
+
+})(jQuery);

modules/book/book.css

@@ -35,6 +35,9 @@
   margin-top: 0;
   margin-bottom: 0;
 }
+html.js #edit-book-pick-book {
+  display: none;
+}
 #edit-book-bid-wrapper .description {
   clear: both;
 }

modules/book/book.js

+// $Id$
+
+(function($) {
+
+Drupal.behaviors.bookFieldsetSummaries = {
+  attach: function(context) {
+    $('fieldset#edit-book', context).setSummary(function(context) {
+      var val = $('#edit-book-bid').val();
+
+      if (val === '0') {
+        return Drupal.t('Not in book');
+      }
+      else if (val === 'new') {
+        return Drupal.t('New book');
+      }
+      else {
+        return Drupal.checkPlain($('#edit-book-bid :selected').text());
+      }
+    });
+  }
+};
+
+})(jQuery);

modules/book/book.module

@@ -415,7 +415,6 @@ function _book_parent_select($book_link) {
 function _book_add_form_elements(&$form, $node) {
   // Need this for AJAX.
   $form['#cach