extras.php

<?php

/** PAGE.TPL.PHP PREPROCESS VARIABLES
---------------------------------------------------------- */
function megatron_preprocess_page(&$variables) {

  // Secondary nav
  $variables['secondary_nav'] = FALSE;
  if($variables['secondary_menu']) {
    $secondary_menu = menu_load(variable_get('menu_secondary_links_source', 'user-menu'));
    
    // Build links
    $tree = menu_tree_page_data($secondary_menu['menu_name']);
    $variables['secondary_menu'] = megatron_menu_navigation_links($tree);
    
    // Build list
    $variables['secondary_nav'] = theme('megatron_btn_dropdown', array(
      'links' => $variables['secondary_menu'],
      'label' => $secondary_menu['title'],
      'type' => 'success',
      'attributes' => array(
        'id' => 'user-menu',
        'class' => array('pull-right'),
      ),
      'heading' => array(
        'text' => t('Secondary menu'),
        'level' => 'h2',
        'class' => array('element-invisible'),
      ),
    ));
  }
  
  // Replace tabs with dropdown version
  $variables['tabs']['#primary'] = _megatron_local_tasks($variables['tabs']['#primary']);
}


/** GENERAL
A wrapper function for megatron_theme_get_settings().
 * 
 * @param $name
 *   The name of the setting that you want to retrieve. 
 * @param $default (optional)
 *   The name (key) of the theme that you want to fetch the
 *   setting for. Defaults to NULL.   
 * @param $theme (optional)
 *   The key (machine-readable name) of a theme. Defaults to the key of the
 *   current theme if not defined.
 *   
 * @see 
 *   megatron_theme_get_setting().
 */
/*function megatron_theme_get_setting($name, $theme = NULL) {
  switch($name){
	case 'exclude':
		$setting = megatron_theme_get_info($name, $theme);
		break;
	default:
	  $setting = theme_get_setting($name, $theme);
		break;
  }

  return isset($setting) ? $setting : NULL; 
}


function megatron_get_settings($theme = NULL) {

  if (!isset($theme)) {
    $theme = !empty($GLOBALS['theme_key']) ? $GLOBALS['theme_key'] : '';
  }
	if($theme) {
		$themes = list_themes();
    $theme_object = $themes[$theme];
	}
	return $theme_object->info['settings'];
}*/


/** theme_megatron_progress_bar
---------------------------------------------------------- */
function megatron_megatron_progress_bar($variables) {
  $variables['attributes']['class'][] = 'progress';
  
  return "<div". drupal_attributes($variables['attributes']) .">
  <div class=\"bar\"
       style=\"width: ". $variables['percent'] ."%;\"></div>
  </div>";
}

/** MENUS
Returns HTML for primary and secondary local tasks.
---------------------------------------------------------- */
function megatron_menu_local_tasks(&$vars) {
  $output = '';

  if ( !empty($vars['primary']) ) {
    $vars['primary']['#prefix'] = '<ul class="nav nav-tabs">';
    $vars['primary']['#suffix'] = '</ul>';
    $output .= drupal_render($vars['primary']);
  }

  if ( !empty($vars['secondary']) ) {
    $vars['secondary']['#prefix'] = '<ul class="nav nav-pills">';
    $vars['secondary']['#suffix'] = '</ul>';
    $output .= drupal_render($vars['secondary']);
  }

  return $output;
}


/** Returns HTML for primary and secondary local tasks.
---------------------------------------------------------- */
function megatron_menu_local_task($variables) {
  $link = $variables['element']['#link'];
  $link_text = $link['title'];
  $classes = array();

  if (!empty($variables['element']['#active'])) {
    // Add text to indicate active tab for non-visual users.
    $active = '<span class="element-invisible">' . t('(active tab)') . '</span>';

    // If the link does not contain HTML already, check_plain() it now.
    // After we set 'html'=TRUE the link will not be sanitized by l().
    if (empty($link['localized_options']['html'])) {
      $link['title'] = check_plain($link['title']);
    }
    $link['localized_options']['html'] = TRUE;
    $link_text = t('!local-task-title!active', array('!local-task-title' => $link['title'], '!active' => $active));

    $classes[] = 'active';
  }

  // Render child tasks if available.
  $children = '';
  if (element_children($variables['element'])) {
    $link['localized_options']['attributes']['class'][] = 'dropdown-toggle';
	  $link['localized_options']['attributes']['data-toggle'][] = 'dropdown';
    $classes[] = 'dropdown';

    $children = drupal_render_children($variables['element']);
    $children = '</b><ul class="secondary-tabs dropdown-menu">' . $children . "</ul>";

	return '<li class="' . implode(' ', $classes) . '"><a href="#"' . drupal_attributes($link['localized_options']['attributes']) .'>' . $link_text . '<div class="ubc7-arrow down-arrow"></div>' . $children . "</li>\n";
  }else{
	return '<li class="' . implode(' ', $classes) . '">' . l($link_text, $link['href'], $link['localized_options']) . $children . "</li>\n";
  }
}


/** Get all primary tasks including subsets
---------------------------------------------------------- */
function _megatron_local_tasks($tabs = FALSE) {
  if($tabs == '')
	return $tabs;
  
  if(!$tabs)
	$tabs = menu_primary_local_tasks();
  
  foreach($tabs as $key => $element) {
	$result = db_select('menu_router', NULL, array('fetch' => PDO::FETCH_ASSOC))
	  ->fields('menu_router')
	  ->condition('tab_parent', $element['#link']['path'])
	  ->condition('context', MENU_CONTEXT_INLINE, '<>')
	  ->condition('type', array(MENU_DEFAULT_LOCAL_TASK, MENU_LOCAL_TASK), 'IN')
	  ->orderBy('weight')
	  ->orderBy('title')
	  ->execute();
  
	$router_item = menu_get_item($element['#link']['path']);
	$map = $router_item['original_map'];
  
	$i = 0;
	foreach ($result as $item) {
	  _menu_translate($item, $map, TRUE);
  
	  //only add items that we have access to
	  if ($item['tab_parent'] && $item['access']) {
		//set path to that of parent for the first item
		if ($i === 0) {
		  $item['href'] = $item['tab_parent'];
		}
  
		if (current_path() == $item['href']) {
		  $tabs[$key][] = array(
			'#theme' => 'menu_local_task',
			'#link' => $item,
			'#active' => TRUE,
		  );
		}
		else {
		  $tabs[$key][] = array(
			'#theme' => 'menu_local_task',
			'#link' => $item,
		  );
		}
  
		//only count items we have access to.
		$i++;
	  }
	}
  }
  
  return $tabs;
}




/** FORMS
Implements hook_form_alter().
---------------------------------------------------------- */
function megatron_form_alter(&$form, &$form_state, $form_id) {
  // Id's of forms that should be ignored
  // Make this configurable?
  $form_ids = array(
    'node_form',
    'system_site_information_settings',
    'user_profile_form',
  );
  
  // Only wrap in container for certain form
  if(isset($form['#form_id']) && !in_array($form['#form_id'], $form_ids) && !isset($form['#node_edit_form']))
    $form['actions']['#theme_wrappers'] = array();
}  

/** Returns HTML for a form element.
---------------------------------------------------------- */
function megatron_form_element(&$variables) {
  $element = &$variables['element'];
  // This is also used in the installer, pre-database setup.
  $t = get_t();

  // This function is invoked as theme wrapper, but the rendered form element
  // may not necessarily have been processed by form_builder().
  $element += array(
    '#title_display' => 'before',
  );

  // Add element #id for #type 'item'.
  if (isset($element['#markup']) && !empty($element['#id'])) {
    $attributes['id'] = $element['#id'];
  }

  // Add bootstrap class
  $attributes['class'] = array('control-group');

  // Check for errors and set correct error class
  if (isset($element['#parents']) && form_get_error($element)) {
    $attributes['class'][] = 'error';
  }

  if (!empty($element['#type'])) {
    $attributes['class'][] = 'form-type-' . strtr($element['#type'], '_', '-');
  }
  if (!empty($element['#name'])) {
    $attributes['class'][] = 'form-item-' . strtr($element['#name'], array(' ' => '-', '_' => '-', '[' => '-', ']' => ''));
  }
  // Add a class for disabled elements to facilitate cross-browser styling.
  if (!empty($element['#attributes']['disabled'])) {
    $attributes['class'][] = 'form-disabled';
  }
  $output = '<div' . drupal_attributes($attributes) . '>' . "\n";

  // If #title is not set, we don't display any label or required marker.
  if (!isset($element['#title'])) {
    $element['#title_display'] = 'none';
  }
  $prefix = isset($element['#field_prefix']) ? '<span class="field-prefix">' . $element['#field_prefix'] . '</span> ' : '';
  $suffix = isset($element['#field_suffix']) ? ' <span class="field-suffix">' . $element['#field_suffix'] . '</span>' : '';

  switch ($element['#title_display']) {
    case 'before':
    case 'invisible':
      $output .= ' ' . theme('form_element_label', $variables);
      $output .= '<div class="controls">';
      $output .= ' ' . $prefix . $element['#children'] . $suffix . "\n";
      break;

    case 'after':
      $output .= '<div class="controls">';
      $variables['#children'] = ' ' . $prefix . $element['#children'] . $suffix;
      $output .= ' ' . theme('form_element_label', $variables) . "\n";
      break;

    case 'none':
    case 'attribute':
      // Output no label and no required marker, only the children.
      $output .= '<div class="controls">';
      $output .= ' ' . $prefix . $element['#children'] . $suffix . "\n";
      break;
  }

  if ( !empty($element['#description']) ) {
    $output .= '<p class="help-block">' . $element['#description'] . "</p>\n";
  }

  $output .= "</div></div>\n";

  return $output;
}

/** Returns HTML for a form element label and required marker.
---------------------------------------------------------- */
function megatron_form_element_label(&$variables) {
  $element = $variables['element'];
  // This is also used in the installer, pre-database setup.
  $t = get_t();

  // If title and required marker are both empty, output no label.
  if ((!isset($element['#title']) || $element['#title'] === '') && empty($element['#required'])) {
    return '';
  }

  // If the element is required, a required marker is appended to the label.
  $required = !empty($element['#required']) ? theme('form_required_marker', array('element' => $element)) : '';

  $title = filter_xss_admin($element['#title']);

  $attributes = array();
  // Style the label as class option to display inline with the element.
  if ($element['#title_display'] == 'after') {
    $attributes['class'][] = 'option';
    $attributes['class'][] = $element['#type'];
  }
  // Show label only to screen readers to avoid disruption in visual flows.
  elseif ($element['#title_display'] == 'invisible') {
    $attributes['class'][] = 'element-invisible';
  }

  if (!empty($element['#id'])) {
    $attributes['for'] = $element['#id'];
  }

  // @Bootstrap: Add Bootstrap control-label class.
  $attributes['class'][] = 'control-label';

  // @Bootstrap: Insert radio and checkboxes inside label elements.
  $output = '';
  if ( isset($variables['#children']) ) {
    $output .= $variables['#children'];
  }

  // @Bootstrap: Append label
  $output .= $t('!title !required', array('!title' => $title, '!required' => $required));

  // The leading whitespace helps visually separate fields from inline labels.
  return ' <label' . drupal_attributes($attributes) . '>' . $output . "</label>\n";
}







/** Preprocessor for theme('button').
---------------------------------------------------------- */
function megatron_preprocess_button(&$vars) {
  $vars['element']['#attributes']['class'][] = 'btn';

  if (isset($vars['element']['#value'])) {
    $classes = array(
      //specifics
      t('Save and add') => 'btn-info',
      t('Add another item') => 'btn-info',
      t('Add effect') => 'btn-primary',
      t('Add and configure') => 'btn-primary',
      t('Update style') => 'btn-primary',
      t('Download feature') => 'btn-primary',

      //generals
      t('Save') => 'btn-primary',
      t('Apply') => 'btn-primary',
      t('Create') => 'btn-primary',
      t('Confirm') => 'btn-primary',
      t('Submit') => 'btn-primary',
      t('Export') => 'btn-primary',
      t('Import') => 'btn-primary',
      t('Restore') => 'btn-primary',
      t('Rebuild') => 'btn-primary',
      t('Search') => 'btn-primary',
      t('Add') => 'btn-info',
      t('Update') => 'btn-info',
      t('Delete') => 'btn-danger',
      t('Remove') => 'btn-danger',
    );
    foreach ($classes as $search => $class) {
      if (strpos($vars['element']['#value'], $search) !== FALSE) {
        $vars['element']['#attributes']['class'][] = $class;
        break;
      }
    }
  }
}

/** Returns HTML for a button form element.
---------------------------------------------------------- */
function megatron_button($variables) {
  $element = $variables['element'];
  $label = check_plain($element['#value']);
  element_set_attributes($element, array('id', 'name', 'value', 'type'));

  $element['#attributes']['class'][] = 'form-' . $element['#button_type'];
  if (!empty($element['#attributes']['disabled'])) {
    $element['#attributes']['class'][] = 'form-button-disabled';
  }

  return '<button' . drupal_attributes($element['#attributes']) . '>'. $label .'</button>
  '; // This line break adds inherent margin between multiple buttons
}




/** PAGER */
/* Returns HTML for a query pager.
 *
 * Menu callbacks that display paged query results should call theme('pager') to
 * retrieve a pager control so that users can view other results. Format a list
 * of nearby pages with additional query results.
 *
 * @param $vars
 *   An associative array containing:
 *   - tags: An array of labels for the controls in the pager.
 *   - element: An optional integer to distinguish between multiple pagers on
 *     one page.
 *   - parameters: An associative array of query string parameters to append to
 *     the pager links.
 *   - quantity: The number of pages in the list.
 *
 * @ingroup themeable
 */
function megatron_pager($variables) {
  $output = "";
  $tags = $variables['tags'];
  $element = $variables['element'];
  $parameters = $variables['parameters'];
  $quantity = $variables['quantity'];
  global $pager_page_array, $pager_total;

  // Calculate various markers within this pager piece:
  // Middle is used to "center" pages around the current page.
  $pager_middle = ceil($quantity / 2);
  // current is the page we are currently paged to
  $pager_current = $pager_page_array[$element] + 1;
  // first is the first page listed by this pager piece (re quantity)
  $pager_first = $pager_current - $pager_middle + 1;
  // last is the last page listed by this pager piece (re quantity)
  $pager_last = $pager_current + $quantity - $pager_middle;
  // max is the maximum page number
  $pager_max = $pager_total[$element];
  // End of marker calculations.

  // Prepare for generation loop.
  $i = $pager_first;
  if ($pager_last > $pager_max) {
    // Adjust "center" if at end of query.
    $i = $i + ($pager_max - $pager_last);
    $pager_last = $pager_max;
  }
  if ($i <= 0) {
    // Adjust "center" if at start of query.
    $pager_last = $pager_last + (1 - $i);
    $i = 1;
  }

  // End of generation loop preparation.
  $li_first = theme('pager_first', array('text' => (isset($tags[0]) ? $tags[0] : t('first')), 'element' => $element, 'parameters' => $parameters));
  $li_previous = theme('pager_previous', array('text' => (isset($tags[1]) ? $tags[1] : t('previous')), 'element' => $element, 'interval' => 1, 'parameters' => $parameters));
  $li_next = theme('pager_next', array('text' => (isset($tags[3]) ? $tags[3] : t('next')), 'element' => $element, 'interval' => 1, 'parameters' => $parameters));
  $li_last = theme('pager_last', array('text' => (isset($tags[4]) ? $tags[4] : t('last')), 'element' => $element, 'parameters' => $parameters));

  if ($pager_total[$element] > 1) {
    /*
    if ($li_first) {
      $items[] = array(
        'class' => array('pager-first'), 
        'data' => $li_first,
      );
    }
    */
    if ($li_previous) {
      $items[] = array(
        'class' => array('prev'), 
        'data' => $li_previous,
      );
    }

    // When there is more than one page, create the pager list.
    if ($i != $pager_max) {
      if ($i > 1) {
        $items[] = array(
          'class' => array('pager-ellipsis'), 
          'data' => '…',
        );
      }
      // Now generate the actual pager piece.
      for (; $i <= $pager_last && $i <= $pager_max; $i++) {
        if ($i < $pager_current) {
          $items[] = array(
           // 'class' => array('pager-item'), 
            'data' => theme('pager_previous', array('text' => $i, 'element' => $element, 'interval' => ($pager_current - $i), 'parameters' => $parameters)),
          );
        }
        if ($i == $pager_current) {
          $items[] = array(
            'class' => array('active'), // Add the active class 
            'data' => l($i, '#', array('fragment' => '','external' => TRUE)),
          );
        }
        if ($i > $pager_current) {
          $items[] = array(
            //'class' => array('pager-item'), 
            'data' => theme('pager_next', array('text' => $i, 'element' => $element, 'interval' => ($i - $pager_current), 'parameters' => $parameters)),
          );
        }
      }
      if ($i < $pager_max) {
        $items[] = array(
          'class' => array('pager-ellipsis'), 
          'data' => '…',
        );
      }
    }
    // End generation.
    if ($li_next) {
      $items[] = array(
        'class' => array('next'), 
        'data' => $li_next,
      );
    }
    /*
    if ($li_last) {
      $items[] = array(
        'class' => array('pager-last'), 
        'data' => $li_last,
      );
    }
    */

    return '<div class="pagination">'. theme('item_list', array(
      'items' => $items, 
      //'attributes' => array('class' => array('pager')),
    )) . '</div>';
  }
  
  return $output;
}


function megatron_item_list($variables) {
  $items = $variables['items'];
  $title = $variables['title'];
  $type = $variables['type'];
  $attributes = $variables['attributes'];
  $output = '';

  if (isset($title)) {
    $output .= '<h3>' . $title . '</h3>';
  }

  if (!empty($items)) {
    $output .= "<$type" . drupal_attributes($attributes) . '>';
    $num_items = count($items);
    foreach ($items as $i => $item) {
      $attributes = array();
      $children = array();
      $data = '';
      if (is_array($item)) {
        foreach ($item as $key => $value) {
          if ($key == 'data') {
            $data = $value;
          }
          elseif ($key == 'children') {
            $children = $value;
          }
          else {
            $attributes[$key] = $value;
          }
        }
      }
      else {
        $data = $item;
      }
      if (count($children) > 0) {
        // Render nested list.
        $data .= theme_item_list(array('items' => $children, 'title' => NULL, 'type' => $type, 'attributes' => $attributes));
      }
      if ($i == 0) {
        $attributes['class'][] = 'first';
      }
      if ($i == $num_items - 1) {
        $attributes['class'][] = 'last';
      }
      $output .= '<li' . drupal_attributes($attributes) . '>' . $data . "</li>\n";
    }
    $output .= "</$type>";
  }
 
  return $output;
}


/** Add Bootstrap table class to tables added by Drupal
---------------------------------------------------------- */
function megatron_preprocess_table(&$variables) {
  if(!isset($variables['attributes']['class'])) {
    $variables['attributes']['class'] = array('table', 'table-striped');
  }
  else {
    $variables['attributes']['class'][] = 'table';
    $variables['attributes']['class'][] = 'table-striped';
  }
}

/** VIEWS
Provides views theme override functions for Bootstrap themes.

Add Bootstrap table class to views tables.
---------------------------------------------------------- */
function megatron_preprocess_views_view_table(&$vars) {
  $vars['classes_array'][] = 'table';
}

function megatron_preprocess_views_view_grid(&$vars) {
  $vars['class'] .= ' table';
}