modules/taxonomy_navigation/taxonomy_navigation.module

<?php
// $Id: taxonomy_navigation.module,v 1.1.2.5 2009/02/02 20:24:16 hanoii Exp $

define('TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES', 1);

/**
 * Helper function to decide if a vocabulary should be supported by this module
 *
 * @param object $vocabulary
 *   taxonomy vocabulary object
 * @return bool
 */
function _taxonomy_navigation_is_supported($vocabulary) {
  $supported = FALSE;

  if ($vocabulary->hierarchy < 2) {
    $supported = TRUE;
  }

  return $supported;
}

/**
 * Count the number of published nodes classified by a term.
 *
 * @param $tid
 *   The term's ID
 *
 * @param $depth
 *   The $depth. Take depth into consideration when counting
 *
 * @return int
 *   An integer representing a number of nodes.
 */
function _taxonomy_navigation_count($tid, $depth) {
  static $count;

  if ( $depth == 'all' ) {
    $cnt = taxonomy_term_count_nodes($tid);
  } else {

    if (!isset($count[$tid]) ) {
      $result = db_query(db_rewrite_sql('SELECT t.tid, COUNT(n.nid) AS c FROM {term_node} t INNER JOIN {node} n ON t.nid = n.nid WHERE n.status = 1 GROUP BY t.tid'));
      while ($term = db_fetch_object($result)) {
        $count[$term->tid] = $term->c;
      }
    }

    if ( $depth != 0 ) {
      foreach (_taxonomy_term_children($tid) as $c) {
        $children_count += _taxonomy_navigation_count($c, $depth-1);
      }
    }

    $cnt = $count[$tid] + $children_count ;
  }

  return $cnt;
}

function taxonomy_navigation_menu($may_cache) {

  if ( $may_cache ) {
     $items[]= array (
        'path' => 'admin/settings/taxonomy_navigation',
        'title' => t('Taxonomy Navigation'),
        'callback' => 'drupal_get_form',
        'callback arguments' => array('taxonomy_navigation_settings'),
        'access' => user_access('administer site configuration'),
        'description' => t('Select which, where and how vocabularies should be included in navigation.'),
        'type' => MENU_NORMAL_ITEM,
      );
  } else {
    foreach (taxonomy_get_vocabularies() as $vocabulary) {
      if (_taxonomy_navigation_is_supported($vocabulary) && variable_get('taxonomy_navigation_show_' . $vocabulary->vid, 0)) {
        // get parent settings
        $pid = variable_get('taxonomy_navigation_pid_' . $vocabulary->vid, 0);

        $tree = taxonomy_get_tree($vocabulary->vid);
        // build an array which holds all children of current term. necessary to build a proper 'or' value in the HREF
        foreach ($tree as $term) {
          $count = 0;
          if (variable_get('taxonomy_navigation_nodes_' . $vocabulary->vid, TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES)) {
            $count = _taxonomy_navigation_count($term->tid, variable_get('taxonomy_navigation_depth_' . $vocabulary->vid, 'all'));
          }

          if ( ( $alias = drupal_get_path_alias('taxonomy/term/' . $term->tid) ) != 'taxonomy/term/' . $term->tid ) {
            $item = array(
                'path' => drupal_get_path_alias('taxonomy/term/' . $term->tid),
                'title' => theme('taxonomy_navigation_menu_title', $term, $count),
                'access' => TRUE,
                'type' => MENU_NORMAL_ITEM,
                'weight' => variable_get('taxonomy_navigation_weight_' . $vocabulary->vid, -20) + $term->weight,
                'tid' => $term->tid,
              );

            if ( $pid != 0 ) {
              // If term has no parent, it means it's a root term
              if (array_sum($term->parents) == 0) {
                $item['pid'] = $pid;
              }
            }
            $items[] = $item;

            $items[] = array(
                'path' => 'taxonomy/term/' . $term->tid,
                'title' => t($term->name).$out,
                'callback' => 'taxonomy_navigation_page',
                'callback arguments' => array($term->tid, variable_get('taxonomy_navigation_depth_' . $vocabulary->vid, 'all')),
                'access' => user_access('access content'),
                'type' => MENU_CALLBACK,
                'tid' => $term->tid,
              );
          }

        }
      }
    }
  }

  return $items;
}

function taxonomy_navigation_page($str_tids = '', $depth = 0, $op = 'page') {
  menu_set_active_item(drupal_get_path_alias($_GET['q']));

  if (module_exists('views') && ($view_name = db_result(db_query("SELECT name FROM {view_view} WHERE url = '%s'", 'taxonomy/term')))) {
    $q = drupal_get_normal_path($_GET['q']);
    $views_args = array();
    $views_args[] = $view_name;
    $args = split('/', $q);
    for ($i = 2 ; $i < count($args) ; $i++) {
      $views_args[] = $args[$i];
    }
    $output = call_user_func_array('views_view_page', $views_args);
  }
  else {
    $output = taxonomy_term_page($str_tids, $depth, $op);
  }

  return $output;
}

/**
 * Menu callback; manage settings for taxonomy menu.
 */
function taxonomy_navigation_settings() {

  $form['taxonomy_navigation_help'] = array(
    '#type' => 'markup',
    '#value' => t('<p>Only vocabularies with <i>Disabled</i> or <i>Single</i> hierarchy can be handled by this module.</p>'),
  );

  if (module_exists('views') && ($view_name = db_result(db_query("SELECT name FROM {view_view} WHERE url = '%s'", 'taxonomy/term')))) {
    $form['taxonomy_navigation_views'] = array(
      '#type' => 'fieldset',
      '#title' => t('Views'),
    );
    $form['taxonomy_navigation_views']['text'] = array(
      '#type' => 'markup',
      '#value' => t('<p>A views overriding !view was found. This module will use that view instead of the regular taxonomy page. All the elements of the URL after taxonomy/term will be passed as arguments to the view. <b>Default depth</b> settings below will not have any effect as it should be set on the view itself.', array('!view' => l('taxonomy/term', 'admin/build/views/' . $view_name . '/edit'))),
    );
  }

  foreach (taxonomy_get_vocabularies() as $vocabulary) {
    if (_taxonomy_navigation_is_supported($vocabulary)) {
      $enable = variable_get('taxonomy_navigation_show_' . $vocabulary->vid, 0);
      $form['taxonomy_navigation_show'][$vocabulary->vid] = array(
        '#type' => 'fieldset',
        '#title' => t('!vocab - !enable', array('!vocab' => t($vocabulary->name), '!enable' => ($enable ? t('Enabled') : t('Disabled')))),
        '#collapsible' => TRUE,
        '#collapsed' => TRUE,
      );
      $form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_show_' . $vocabulary->vid] = array(
        '#type' => 'checkbox',
        '#title' => t('Show "%vocab" in menu', array('%vocab' => t($vocabulary->name))),
        '#default_value' => variable_get('taxonomy_navigation_show_' . $vocabulary->vid, 0),
      );
      $form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_depth_' . $vocabulary->vid] = array(
        '#type' => 'textfield',
        '#title' => t('Default depth'),
        '#description' => t('Depth of hierarchy terms to display on each navigation item. You can use "all" for a complete list.'),
        '#default_value' => variable_get('taxonomy_navigation_depth_' . $vocabulary->vid, 'all'),
      );
      $form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_weight_' . $vocabulary->vid] = array(
        '#type' => 'textfield',
        '#title' => t('Weight offset'),
        '#description' => t('Weight offset that will be added to the term weight. Useful to move navigation items alltogether. It can be positive or negative.'),
        '#default_value' => variable_get('taxonomy_navigation_weight_' . $vocabulary->vid, -20),
      );
      $options = array();
      $options[0] = t('Unset');
      $root_menues = menu_get_root_menus();
      foreach ( $root_menues as $mid => $title ) {
        $options[$mid] = $title;
      }
      $form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_pid_' . $vocabulary->vid] = array(
        '#type' => 'select',
        '#title' => t('Menu parent'),
        '#options' => $options,
        '#description' => t('Choose one of your root menues to be the parent of the dynamic menu items of this vocabulary. Unset means default parent will be used which is generally Navigation.'),
        '#default_value' => variable_get('taxonomy_navigation_pid_' . $vocabulary->vid, 0),
      );
      $form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_nodes_' . $vocabulary->vid] = array(
        '#type' => 'checkbox',
        '#title' => t('Display number of nodes'),
        '#description' => t('Choose whether to display the amount of nodes in each term.'),
        '#default_value' => variable_get('taxonomy_navigation_nodes_' . $vocabulary->vid, TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES),
      );
    }
  }

  return system_settings_form($form);
}

function taxonomy_navigation_nodeapi($node, $op, $teaser, $page) {
  if ($op == 'view' && !$teaser && $page) {
    foreach ( $node->taxonomy as $term ) {
      if ( variable_get('taxonomy_navigation_show_' . $term->vid, 0) ) {
        if ( ( $alias = drupal_get_path_alias('taxonomy/term/' . $term->tid) ) != 'taxonomy/term/' . $term->tid ) {
          $items[] = array(
              'path' => $alias,
            );
        }
      }
    }
    if ( count($items) ) {
      $items[] = array(
          'path' => 'node/'.$node->nid,
        );
      menu_set_location($items);
    }
  }
}

function theme_taxonomy_navigation_nodes($qty) {
  if ($qty) {
    $output = ' (' . $qty . ')';
  }
  return $output;
}

function theme_taxonomy_navigation_menu_title($term, $qty) {
  $title .= t($term->name);
  if (variable_get('taxonomy_navigation_nodes_' . $term->vid, TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES)) {
    $title .= theme('taxonomy_navigation_nodes', $qty);
  }

  return  $title;
}
1	<?php
2	// $Id: taxonomy_navigation.module,v 1.1.2.5 2009/02/02 20:24:16 hanoii Exp $
3
4	define('TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES', 1);
5
6	/**
7	* Helper function to decide if a vocabulary should be supported by this module
8	*
9	* @param object $vocabulary
10	* taxonomy vocabulary object
11	* @return bool
12	*/
13	function _taxonomy_navigation_is_supported($vocabulary) {
14	$supported = FALSE;
15
16	if ($vocabulary->hierarchy < 2) {
17	$supported = TRUE;
18	}
19
20	return $supported;
21	}
22
23	/**
24	* Count the number of published nodes classified by a term.
25	*
26	* @param $tid
27	* The term's ID
28	*
29	* @param $depth
30	* The $depth. Take depth into consideration when counting
31	*
32	* @return int
33	* An integer representing a number of nodes.
34	*/
35	function _taxonomy_navigation_count($tid, $depth) {
36	static $count;
37
38	if ( $depth == 'all' ) {
39	$cnt = taxonomy_term_count_nodes($tid);
40	} else {
41
42	if (!isset($count[$tid]) ) {
43	$result = db_query(db_rewrite_sql('SELECT t.tid, COUNT(n.nid) AS c FROM {term_node} t INNER JOIN {node} n ON t.nid = n.nid WHERE n.status = 1 GROUP BY t.tid'));
44	while ($term = db_fetch_object($result)) {
45	$count[$term->tid] = $term->c;
46	}
47	}
48
49	if ( $depth != 0 ) {
50	foreach (_taxonomy_term_children($tid) as $c) {
51	$children_count += _taxonomy_navigation_count($c, $depth-1);
52	}
53	}
54
55	$cnt = $count[$tid] + $children_count ;
56	}
57
58	return $cnt;
59	}
60
61	function taxonomy_navigation_menu($may_cache) {
62
63	if ( $may_cache ) {
64	$items[]= array (
65	'path' => 'admin/settings/taxonomy_navigation',
66	'title' => t('Taxonomy Navigation'),
67	'callback' => 'drupal_get_form',
68	'callback arguments' => array('taxonomy_navigation_settings'),
69	'access' => user_access('administer site configuration'),
70	'description' => t('Select which, where and how vocabularies should be included in navigation.'),
71	'type' => MENU_NORMAL_ITEM,
72	);
73	} else {
74	foreach (taxonomy_get_vocabularies() as $vocabulary) {
75	if (_taxonomy_navigation_is_supported($vocabulary) && variable_get('taxonomy_navigation_show_' . $vocabulary->vid, 0)) {
76	// get parent settings
77	$pid = variable_get('taxonomy_navigation_pid_' . $vocabulary->vid, 0);
78
79	$tree = taxonomy_get_tree($vocabulary->vid);
80	// build an array which holds all children of current term. necessary to build a proper 'or' value in the HREF
81	foreach ($tree as $term) {
82	$count = 0;
83	if (variable_get('taxonomy_navigation_nodes_' . $vocabulary->vid, TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES)) {
84	$count = _taxonomy_navigation_count($term->tid, variable_get('taxonomy_navigation_depth_' . $vocabulary->vid, 'all'));
85	}
86
87	if ( ( $alias = drupal_get_path_alias('taxonomy/term/' . $term->tid) ) != 'taxonomy/term/' . $term->tid ) {
88	$item = array(
89	'path' => drupal_get_path_alias('taxonomy/term/' . $term->tid),
90	'title' => theme('taxonomy_navigation_menu_title', $term, $count),
91	'access' => TRUE,
92	'type' => MENU_NORMAL_ITEM,
93	'weight' => variable_get('taxonomy_navigation_weight_' . $vocabulary->vid, -20) + $term->weight,
94	'tid' => $term->tid,
95	);
96
97	if ( $pid != 0 ) {
98	// If term has no parent, it means it's a root term
99	if (array_sum($term->parents) == 0) {
100	$item['pid'] = $pid;
101	}
102	}
103	$items[] = $item;
104
105	$items[] = array(
106	'path' => 'taxonomy/term/' . $term->tid,
107	'title' => t($term->name).$out,
108	'callback' => 'taxonomy_navigation_page',
109	'callback arguments' => array($term->tid, variable_get('taxonomy_navigation_depth_' . $vocabulary->vid, 'all')),
110	'access' => user_access('access content'),
111	'type' => MENU_CALLBACK,
112	'tid' => $term->tid,
113	);
114	}
115
116	}
117	}
118	}
119	}
120
121	return $items;
122	}
123
124	function taxonomy_navigation_page($str_tids = '', $depth = 0, $op = 'page') {
125	menu_set_active_item(drupal_get_path_alias($_GET['q']));
126
127	if (module_exists('views') && ($view_name = db_result(db_query("SELECT name FROM {view_view} WHERE url = '%s'", 'taxonomy/term')))) {
128	$q = drupal_get_normal_path($_GET['q']);
129	$views_args = array();
130	$views_args[] = $view_name;
131	$args = split('/', $q);
132	for ($i = 2 ; $i < count($args) ; $i++) {
133	$views_args[] = $args[$i];
134	}
135	$output = call_user_func_array('views_view_page', $views_args);
136	}
137	else {
138	$output = taxonomy_term_page($str_tids, $depth, $op);
139	}
140
141	return $output;
142	}
143
144	/**
145	* Menu callback; manage settings for taxonomy menu.
146	*/
147	function taxonomy_navigation_settings() {
148
149	$form['taxonomy_navigation_help'] = array(
150	'#type' => 'markup',
151	'#value' => t('<p>Only vocabularies with <i>Disabled</i> or <i>Single</i> hierarchy can be handled by this module.</p>'),
152	);
153
154	if (module_exists('views') && ($view_name = db_result(db_query("SELECT name FROM {view_view} WHERE url = '%s'", 'taxonomy/term')))) {
155	$form['taxonomy_navigation_views'] = array(
156	'#type' => 'fieldset',
157	'#title' => t('Views'),
158	);
159	$form['taxonomy_navigation_views']['text'] = array(
160	'#type' => 'markup',
161	'#value' => t('<p>A views overriding !view was found. This module will use that view instead of the regular taxonomy page. All the elements of the URL after taxonomy/term will be passed as arguments to the view. <b>Default depth</b> settings below will not have any effect as it should be set on the view itself.', array('!view' => l('taxonomy/term', 'admin/build/views/' . $view_name . '/edit'))),
162	);
163	}
164
165	foreach (taxonomy_get_vocabularies() as $vocabulary) {
166	if (_taxonomy_navigation_is_supported($vocabulary)) {
167	$enable = variable_get('taxonomy_navigation_show_' . $vocabulary->vid, 0);
168	$form['taxonomy_navigation_show'][$vocabulary->vid] = array(
169	'#type' => 'fieldset',
170	'#title' => t('!vocab - !enable', array('!vocab' => t($vocabulary->name), '!enable' => ($enable ? t('Enabled') : t('Disabled')))),
171	'#collapsible' => TRUE,
172	'#collapsed' => TRUE,
173	);
174	$form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_show_' . $vocabulary->vid] = array(
175	'#type' => 'checkbox',
176	'#title' => t('Show "%vocab" in menu', array('%vocab' => t($vocabulary->name))),
177	'#default_value' => variable_get('taxonomy_navigation_show_' . $vocabulary->vid, 0),
178	);
179	$form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_depth_' . $vocabulary->vid] = array(
180	'#type' => 'textfield',
181	'#title' => t('Default depth'),
182	'#description' => t('Depth of hierarchy terms to display on each navigation item. You can use "all" for a complete list.'),
183	'#default_value' => variable_get('taxonomy_navigation_depth_' . $vocabulary->vid, 'all'),
184	);
185	$form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_weight_' . $vocabulary->vid] = array(
186	'#type' => 'textfield',
187	'#title' => t('Weight offset'),
188	'#description' => t('Weight offset that will be added to the term weight. Useful to move navigation items alltogether. It can be positive or negative.'),
189	'#default_value' => variable_get('taxonomy_navigation_weight_' . $vocabulary->vid, -20),
190	);
191	$options = array();
192	$options[0] = t('Unset');
193	$root_menues = menu_get_root_menus();
194	foreach ( $root_menues as $mid => $title ) {
195	$options[$mid] = $title;
196	}
197	$form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_pid_' . $vocabulary->vid] = array(
198	'#type' => 'select',
199	'#title' => t('Menu parent'),
200	'#options' => $options,
201	'#description' => t('Choose one of your root menues to be the parent of the dynamic menu items of this vocabulary. Unset means default parent will be used which is generally Navigation.'),
202	'#default_value' => variable_get('taxonomy_navigation_pid_' . $vocabulary->vid, 0),
203	);
204	$form['taxonomy_navigation_show'][$vocabulary->vid]['taxonomy_navigation_nodes_' . $vocabulary->vid] = array(
205	'#type' => 'checkbox',
206	'#title' => t('Display number of nodes'),
207	'#description' => t('Choose whether to display the amount of nodes in each term.'),
208	'#default_value' => variable_get('taxonomy_navigation_nodes_' . $vocabulary->vid, TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES),
209	);
210	}
211	}
212
213	return system_settings_form($form);
214	}
215
216	function taxonomy_navigation_nodeapi($node, $op, $teaser, $page) {
217	if ($op == 'view' && !$teaser && $page) {
218	foreach ( $node->taxonomy as $term ) {
219	if ( variable_get('taxonomy_navigation_show_' . $term->vid, 0) ) {
220	if ( ( $alias = drupal_get_path_alias('taxonomy/term/' . $term->tid) ) != 'taxonomy/term/' . $term->tid ) {
221	$items[] = array(
222	'path' => $alias,
223	);
224	}
225	}
226	}
227	if ( count($items) ) {
228	$items[] = array(
229	'path' => 'node/'.$node->nid,
230	);
231	menu_set_location($items);
232	}
233	}
234	}
235
236	function theme_taxonomy_navigation_nodes($qty) {
237	if ($qty) {
238	$output = ' (' . $qty . ')';
239	}
240	return $output;
241	}
242
243	function theme_taxonomy_navigation_menu_title($term, $qty) {
244	$title .= t($term->name);
245	if (variable_get('taxonomy_navigation_nodes_' . $term->vid, TAXONOMY_NAVIGATION_DEFAULT_NUMBER_OF_NODES)) {
246	$title .= theme('taxonomy_navigation_nodes', $qty);
247	}
248
249	return $title;
250	}