forum.module 33.2 KB
Newer Older
Dries's avatar
   
Dries committed
1
2
3
<?php
// $Id$

Dries's avatar
   
Dries committed
4
5
6
7
8
/**
 * @file
 * Enable threaded discussions about general topics.
 */

9
10
11
12
/**
 * Implementation of hook_help().
 */
function forum_help($section) {
Dries's avatar
   
Dries committed
13
  switch ($section) {
14
    case 'admin/forum':
15
      return t('<p>This is a list of existing containers and forums that you can edit. Containers hold forums and, in turn, forums hold threaded discussions. Both containers and forums can be placed inside other containers and forums. By planning the structure of your containers and forums well, you make it easier for users to find a topic area of interest to them.</p>');
16
    case 'admin/forum/add/container':
17
      return t('<p>Containers help you organize your forums. The job of a container is to hold, or contain, other forums that are related. For example, a container named "Food" might hold two forums named "Fruit" and "Vegetables".</p>');
18
    case 'admin/forum/add/forum':
19
      return t('<p>A forum holds discussion topics that are related. For example, a forum named "Fruit" might contain topics titled "Apples" and "Bananas".</p>');
Dries's avatar
   
Dries committed
20
    case 'admin/modules#description':
21
      return t('Enables threaded discussions about general topics.');
22
23
    case 'admin/forum/configure':
      return t('This is where you can configure system-wide options for how your forums act and display.');
Dries's avatar
   
Dries committed
24
    case 'node/add#forum':
25
      return t('Create a new topic for discussion in the forums.');
Dries's avatar
   
Dries committed
26
27
28
  }
}

29
30
31
/**
 * Implementation of hook_node_name().
 */
Dries's avatar
   
Dries committed
32
function forum_node_name($node) {
Dries's avatar
   
Dries committed
33
  return t('forum topic');
Dries's avatar
   
Dries committed
34
35
}

36
37
38
/**
 * Implementation of hook_access().
 */
Dries's avatar
   
Dries committed
39
function forum_access($op, $node) {
Dries's avatar
   
Dries committed
40
41
  global $user;

Dries's avatar
   
Dries committed
42
43
  if ($op == 'create') {
    return user_access('create forum topics');
Dries's avatar
   
Dries committed
44
  }
Dries's avatar
   
Dries committed
45
46
47
48
49
50

  if ($op == 'update' || $op == 'delete') {
    if (user_access('edit own forum topics') && ($user->uid == $node->uid)) {
      return TRUE;
    }
  }
Dries's avatar
   
Dries committed
51
52
}

53
54
55
/**
 * Implementation of hook_perm().
 */
Dries's avatar
   
Dries committed
56
function forum_perm() {
57
  return array('create forum topics', 'edit own forum topics', 'administer forums');
Dries's avatar
   
Dries committed
58
}
Dries's avatar
   
Dries committed
59

60
/**
61
 * Administration page which allows maintaining forums
62
 */
63
64
65
66
67
68
69
function forum_admin() {
  $op = $_POST['op'];
  $edit = $_POST['edit'];

  if (empty($op)) {
    $op = arg(2);
  }
Dries's avatar
   
Dries committed
70

71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
  switch ($op) {
    case 'add':
      if (arg(3) == 'forum') {
        $output = forum_form_forum();
      }
      else if (arg(3) == 'container') {
        $output = forum_form_container();
      }
      break;
    case 'edit':
      if (arg(3) == 'forum') {
        $output = forum_form_forum(object2array(taxonomy_get_term(arg(4))));
      }
      else if (arg(3) == 'container') {
         $output = forum_form_container(object2array(taxonomy_get_term(arg(4))));
      }
      break;
    case t('Delete'):
      if (!$edit['confirm']) {
90
        $output = _forum_confirm_delete($edit['tid']);
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
        break;
      }
      else {
        $edit['name'] = 0;
      }
    case t('Submit'):
      $edit = taxonomy_save_term($edit);
      if (arg(3) == 'container') {
        $containers = variable_get('forum_containers', array());
        $containers[] = $edit['tid'];
        variable_set('forum_containers', $containers);
       }
      drupal_goto('admin/forum');
    default:
      $output = forum_overview();
  }

Dries's avatar
   
Dries committed
108
  return $output;
109
110
111
112
113
114
115
}

/**
 * Implementation of hook_taxonomy().
 */
function forum_taxonomy($op, $type, $object) {
  if ($op == 'delete' && $type == 'term' && $object->vid == _forum_get_vid())  {
Dries's avatar
Dries committed
116
    $results = db_query('SELECT f.nid FROM {forum} f WHERE f.tid = %d', $object->tid);
117
118
119
120
    while ($node = db_fetch_object($results)) {
      $edit['nid'] = $node->nid;
      $edit['confirm'] = TRUE;
      node_delete($edit);
Dries's avatar
   
Dries committed
121
    }
122
123
  }
}
Dries's avatar
   
Dries committed
124

125
126
127
128
129
/**
 * Returns a confirmation page for deleting a forum taxonomy term
 *
 * @param $tid ID of the term to be deleted
 */
130
function _forum_confirm_delete($tid) {
131
132
133
134
  $term = taxonomy_get_term($tid);

  $extra = form_hidden('tid', $tid);
  $output = theme('confirm',
Steven Wittens's avatar
Steven Wittens committed
135
                  t('Are you sure you want to delete the forum %name?', array('%name' => theme('placeholder', $term->name))),
136
137
138
139
140
                  'admin/forums',
                  t('Deleting a forum or container will delete all sub-forums as well. This action cannot be undone.'),
                  t('Delete'),
                  t('Cancel'),
                  $extra);
141
  return $output;
142
143
144
145
146
147
148
149
}

/**
 * Returns a form for adding a container to the forum vocabulary
 *
 * @param $edit Associative array containing a container term to be added or edited.
 */
function forum_form_container($edit = array()) {
150
151
  $form = form_textfield(t('Container name'), 'name', $edit['name'], 50, 64, t('The container name is used to identify related forums.'), NULL, TRUE);
  $form .= form_textarea(t('Description'), 'description', $edit['description'], 60, 5, t('The container description can give users more information about the forums it contains.'));
152

153
154
  $form .= _forum_parent_select($edit['tid'], t('Parent'), 'parent][', 'container');
  $form .= form_weight(t('Weight'), 'weight', $edit['weight'], 10, t('When listing containers, those with with light (small) weights get listed before containers with heavier (larger) weights. Containers with equal weights are sorted alphabetically.'));
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

  $form .= form_hidden('vid', _forum_get_vid());
  $form .= form_submit(t('Submit'));
  if ($edit['tid']) {
    $form .= form_submit(t('Delete'));
    $form .= form_hidden('tid', $edit['tid']);
  }

  return form($form);
}

/**
 * Returns a form for adding a forum to the forum vocabulary
 *
 * @param $edit Associative array containing a forum term to be added or edited.
 */
function forum_form_forum($edit = array()) {
172
173
  $form = form_textfield(t('Forum name'), 'name', $edit['name'], 50, 64, t('The forum name is used to identify related topic discussions.'), NULL, TRUE);
  $form .= form_textarea(t('Description'), 'description', $edit['description'], 60, 5, t('The forum description can give users more information about the discussion topics it contains.'));
174

175
176
  $form .= _forum_parent_select($edit['tid'], t('Parent'), 'parent][', 'forum');
  $form .= form_weight(t('Weight'), 'weight', $edit['weight'], 10, t('When listing forums, those with light (small) weights get listed before forums with heavier (larger) weights. Forums with equal weights are sorted alphabetically.'));
177
178
179
180
181
182
183

  $form .= form_hidden('vid', _forum_get_vid());
  $form .= form_submit(t('Submit'));
  if ($edit['tid']) {
    $form .= form_submit(t('Delete'));
    $form .= form_hidden('tid', $edit['tid']);
  }
184

185
186
187
188
189
190
191
192
193
194
  return form($form);
}

/**
 * Returns a select box for available parent terms
 *
 * @param $tid ID of the term which is being added or edited
 * @param $title Title to display the select box with
 * @param $name Name to use in the forum
 */
195
function _forum_parent_select($tid, $title, $name, $child_type) {
196
197

  $parents = taxonomy_get_parents($tid);
198
199
200
201
202
203
204
205
  if ($parents) {
    $parent = array_shift($parents);
    $parent = $parent->tid;
  }
  else {
    $parent = 0;
  }

206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
  $children = taxonomy_get_tree(_forum_get_vid, $tid);

  // A term can't be the child of itself, nor of its children.
  foreach ($children as $child) {
    $exclude[] = $child->tid;
  }
  $exclude[] = $tid;

  $tree = taxonomy_get_tree(_forum_get_vid());
  $options[0] = '<'. t('root') .'>';
  if ($tree) {
    foreach ($tree as $term) {
      if (!in_array($term->tid, $exclude)) {
        $options[$term->tid] = _forum_depth($term->depth).$term->name;
      }
Dries's avatar
   
Dries committed
221
222
    }
  }
223
224
225
226
227
228
  if ($child_type == 'container') {
    $description = t('Containers are usually placed at the top (root) level of your forum but you can also place a container inside a parent container or forum.');
  }
  else if ($child_type == 'forum') {
    $description = t('You may place your forum inside a parent container or forum, or at the top (root) level of your forum.');
  }
Dries's avatar
   
Dries committed
229

230
  return form_select($title, $name, $parent, $options, $description, 0, FALSE, TRUE);
Dries's avatar
   
Dries committed
231
232
}

233
/**
234
 * Returns an overview list of existing forums and containers
235
 */
236
237
238
239
240
241
242
function forum_overview() {
  $header = array(t('Name'), t('Operations'));

  $tree = taxonomy_get_tree(_forum_get_vid());
  if ($tree) {
    foreach ($tree as $term) {
      if (in_array($term->tid, variable_get('forum_containers', array()))) {
243
        $rows[] = array(_forum_depth($term->depth) .' '. check_plain($term->name), l(t('edit container'), "admin/forum/edit/container/$term->tid"));
244
245
      }
      else {
246
        $rows[] = array(_forum_depth($term->depth) .' '. check_plain($term->name), l(t('edit forum'), "admin/forum/edit/forum/$term->tid"));
247
248
       }

Dries's avatar
Dries committed
249
250
    }
  }
251
  else {
252
    $rows[] = array(array('data' => t('There are no containers or forums.'), 'colspan' => 2));
253
254
  }
  return theme('table', $header, $rows);
Dries's avatar
Dries committed
255
256
}

257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
/**
 * Helper function used to generate indentation for forum list
 *
 * @param $depth Depth of the indentation
 * @param $graphic HTML text to be repeated for each stage of depth
 */
function _forum_depth($depth, $graphic = '--') {
  for ($n = 0; $n < $depth; $n++) {
    $result .= $graphic;
  }
  return $result;
}

/**
 * Returns the vocabulary id for forum navigation.
 */
function _forum_get_vid() {
  $vid = variable_get('forum_nav_vocabulary', '');
  if (empty($vid)) {
    // Check to see if a forum vocabulary exists
    $vid = db_result(db_query("SELECT vid FROM {vocabulary} WHERE module='%s'", 'forum'));
    if (!$vid) {
279
      $vocabulary = taxonomy_save_vocabulary(array('name' => 'Forums', 'multiple' => 0, 'required' => 1, 'hierarchy' => 1, 'relations' => 0, 'module' => 'forum', 'nodes' => array('forum')));
280
281
282
283
284
285
286
287
288
289
290
      $vid = $vocabulary['vid'];
    }
    variable_set('forum_nav_vocabulary', $vid);
  }

  return $vid;
}

/**
 * Implementation of hook_settings
 */
291
292
293
function forum_admin_configure() {
  system_settings_save();

294
295
296
297
298
299
300
301
  $output .= form_textfield(t('Forum icon path'), 'forum_icon_path', variable_get('forum_icon_path', ''), 30, 255, t('The path to the forum icons.  Leave blank to disable icons. Don\'t add a trailing slash.  Default icons are available in the "misc" directory. You may use images of whatever size you wish, but it is recommended to use 15x15 or 16x16. '));
  $number = drupal_map_assoc(array(5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 80, 100, 10000));
  $output .= form_select(t('Hot topic threshold'), 'forum_hot_topic', variable_get('forum_hot_topic', 15), $number, t('The number of posts a topic must have to be considered hot.'));
  $number = drupal_map_assoc(array(10, 25, 50, 75, 100));
  $output .= form_select(t('Topics per page'), 'forum_per_page', variable_get('forum_per_page', 25), $number, t('The default number of topics displayed per page; links to browse older messages are automatically being displayed.'));
  $forder = array(1 => t('Date - newest first'), 2 => t('Date - oldest first'), 3 => t('Posts - most active first'), 4=> t('Posts - least active first'));
  $output .= form_radios(t('Default order'), 'forum_order', variable_get('forum_order', '1'), $forder, t('The default display order for topics.'));

Dries's avatar
   
Dries committed
302
  return system_settings_form($output);
303
304
}

305
306
307
/**
 * Implementation of hook_load().
 */
Dries's avatar
   
Dries committed
308
function forum_load($node) {
Dries's avatar
   
Dries committed
309
  $forum = db_fetch_object(db_query('SELECT * FROM {forum} WHERE nid = %d', $node->nid));
Dries's avatar
   
Dries committed
310
311
312
313

  return $forum;
}

314
315
316
317
318
319
/**
 * Implementation of hook_block().
 *
 * Generates a block containing the currently active forum topics and the
 * most recently added forum topics.
 */
320
321
322
function forum_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
Dries's avatar
   
Dries committed
323
324
      $blocks[0]['info'] = t('Active forum topics');
      $blocks[1]['info'] = t('New forum topics');
325
      return $blocks;
Dries's avatar
   
Dries committed
326

327
    case 'configure':
328
      $output = form_select(t('Number of topics'), 'forum_block_num_'. $delta, variable_get('forum_block_num_'. $delta, '5'), drupal_map_assoc(array(2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)));
329
      return $output;
Dries's avatar
   
Dries committed
330

331
    case 'save':
332
      variable_set('forum_block_num_'. $delta, $edit['forum_block_num_'. $delta]);
333
      break;
Dries's avatar
   
Dries committed
334

335
336
    case 'view':
      if (user_access('access content')) {
Dries's avatar
   
Dries committed
337
338
        switch ($delta) {
          case 0:
339
            $title = t('Active forum topics');
340
            $sql = db_rewrite_sql("SELECT n.nid, n.title, l.last_comment_timestamp, l.comment_count FROM {node} n INNER JOIN {node_comment_statistics} l ON n.nid = l.nid WHERE n.status = 1 AND n.type = 'forum' ORDER BY l.last_comment_timestamp DESC");
341
342
            $content = node_title_list(db_query_range($sql, 0, variable_get('forum_block_num_0', '5')));
            break;
Dries's avatar
   
Dries committed
343
344

          case 1:
345
346
347
348
            $title = t('New forum topics');
            $sql = db_rewrite_sql("SELECT n.nid, n.title, l.comment_count FROM {node} n INNER JOIN {node_comment_statistics} l ON n.nid = l.nid WHERE n.type = 'forum' AND n.status = 1 ORDER BY n.nid DESC");
            $content = node_title_list(db_query_range($sql, 0, variable_get('forum_block_num_1', '5')));
            break;
Dries's avatar
   
Dries committed
349
        }
Dries's avatar
   
Dries committed
350

351
352
353
354
        if ($content) {
          $content .= '<div class="more-link">'. l(t('more'), 'forum', array('title' => t('Read the latest forum topics.'))) .'</div>';
        }

Dries's avatar
   
Dries committed
355
        $block['subject'] = $title;
356
357
358
359
360
        $block['content'] = $content;

        return $block;
      }
  }
Dries's avatar
   
Dries committed
361
362
}

Dries's avatar
   
Dries committed
363
364
365
/**
 * Implementation of hook_link().
 */
366
function forum_link($type, $node = 0, $main = 0) {
Dries's avatar
Dries committed
367
  global $user;
Dries's avatar
   
Dries committed
368

Dries's avatar
   
Dries committed
369
370
  $links = array();

Dries's avatar
   
Dries committed
371
  if (!$main && $type == 'node' && $node->type == 'forum') {
Dries's avatar
   
Dries committed
372
373
    // get previous and next topic

Steven Wittens's avatar
Steven Wittens committed
374
    $sql = "SELECT n.nid, n.title, n.sticky, l.comment_count, l.last_comment_timestamp FROM {node} n INNER JOIN {node_comment_statistics} l ON n.nid = l.nid INNER JOIN {term_node} r ON n.nid = r.nid AND r.tid = %d WHERE n.status = 1 AND n.type = 'forum' ORDER BY n.sticky DESC, ". _forum_get_topic_order_sql(variable_get('forum_order', 1));
375
    $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
376
    $result = db_query($sql, $node->tid);
Dries's avatar
   
Dries committed
377
378
379

    while ($topic = db_fetch_object($result)) {
      if ($stop == 1) {
380
        $next = new StdClass();
Dries's avatar
   
Dries committed
381
382
383
384
385
386
387
388
        $next->nid = $topic->nid;
        $next->title = $topic->title;
        break;
      }
      if ($topic->nid == $node->nid) {
        $stop = 1;
      }
      else {
389
        $prev = new StdClass();
Dries's avatar
   
Dries committed
390
391
392
393
394
395
        $prev->nid = $topic->nid;
        $prev->title = $topic->title;
      }
    }

    if ($prev) {
396
      $links[] = l(t('previous forum topic'), "node/$prev->nid", array('title' => check_plain($prev->title)));
Dries's avatar
   
Dries committed
397
398
399
    }

    if ($next) {
400
      $links[] = l(t('next forum topic'), "node/$next->nid", array('title' => check_plain($next->title)));
Dries's avatar
   
Dries committed
401
    }
Dries's avatar
   
Dries committed
402
403
  }

Dries's avatar
   
Dries committed
404
  return $links;
Dries's avatar
   
Dries committed
405
406
}

Dries's avatar
   
Dries committed
407
408
409
/**
 * Implementation of hook_menu().
 */
Dries's avatar
   
Dries committed
410
function forum_menu($may_cache) {
Dries's avatar
   
Dries committed
411
412
  $items = array();

Dries's avatar
   
Dries committed
413
414
415
  if ($may_cache) {
    $items[] = array('path' => 'node/add/forum', 'title' => t('forum topic'),
      'access' => user_access('create forum topics'));
416

Dries's avatar
   
Dries committed
417
418
419
    $items[] = array('path' => 'forum', 'title' => t('forums'),
      'callback' => 'forum_page',
      'access' => user_access('access content'),
420
      'type' => MENU_SUGGESTED_ITEM);
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435

    $items[] = array('path' => 'admin/forum', 'title' => t('forums'),
      'callback' => 'forum_admin',
      'access' => user_access('administer forums'),
      'type' => MENU_NORMAL_ITEM);

    $items[] = array('path' => 'admin/forum/list', 'title' => t('list'),
      'access' => user_access('administer forums'),
      'type' => MENU_DEFAULT_LOCAL_TASK, 'weight' => -10);
    $items[] = array('path' => 'admin/forum/add/container', 'title' => t('add container'),
      'access' => user_access('administer forums'),
      'type' => MENU_LOCAL_TASK);
    $items[] = array('path' => 'admin/forum/add/forum', 'title' => t('add forum'),
      'access' => user_access('administer forums'),
      'type' => MENU_LOCAL_TASK);
436
437
438
439
    $items[] = array('path' => 'admin/forum/configure', 'title' => t('configure'),
      'callback' => 'forum_admin_configure',
      'access' => user_access('administer forums'),
      'type' => MENU_LOCAL_TASK);
440
441
442
443
444
445
446

    $items[] = array('path' => 'admin/forum/edit/container', 'title' => t('edit container'),
      'access' => user_access('administer forums'),
      'type' => MENU_CALLBACK);
    $items[] = array('path' => 'admin/forum/edit/forum', 'title' => t('edit forum'),
      'access' => user_access('administer forums'),
      'type' => MENU_CALLBACK);
Dries's avatar
   
Dries committed
447
  }
Dries's avatar
   
Dries committed
448
449
450
451

  return $items;
}

452
453
454
/**
 * Implementation of hook_view().
 */
Dries's avatar
   
Dries committed
455
function forum_view(&$node, $teaser = FALSE, $page = FALSE) {
Dries's avatar
   
Dries committed
456

Dries's avatar
   
Dries committed
457
  if ($page) {
Dries's avatar
   
Dries committed
458
    $vocabulary = taxonomy_get_vocabulary(variable_get('forum_nav_vocabulary', ''));
Dries's avatar
   
Dries committed
459
    // Breadcrumb navigation
Dries's avatar
   
Dries committed
460
461
    $breadcrumb = array();
    $breadcrumb[] = array('path' => 'forum', 'title' => $vocabulary->name);
Dries's avatar
   
Dries committed
462
    if ($parents = taxonomy_get_parents_all($node->tid)) {
Dries's avatar
   
Dries committed
463
464
      $parents = array_reverse($parents);
      foreach ($parents as $p) {
Dries's avatar
   
Dries committed
465
        $breadcrumb[] = array('path' => 'forum/'. $p->tid, 'title' => $p->name);
Dries's avatar
   
Dries committed
466
467
      }
    }
Dries's avatar
   
Dries committed
468
469
    $breadcrumb[] = array('path' => 'node/'. $node->nid);
    menu_set_location($breadcrumb);
470
  }
Dries's avatar
   
Dries committed
471

472
  $node = node_prepare($node, $teaser);
Dries's avatar
   
Dries committed
473
474
}

475
476
477
478
479
480
/**
 * Implementation of hook_validate().
 *
 * Check in particular that only a "leaf" term in the associated taxonomy
 * vocabulary is selected, not a "container" term.
 */
481
482
function forum_validate(&$node) {
  // Make sure all fields are set properly:
Dries's avatar
   
Dries committed
483
  $node->icon = $node->icon ? $node->icon : '';
Dries's avatar
   
Dries committed
484
485
486

  if ($node->taxonomy) {
    // Extract the node's proper topic ID.
Dries's avatar
   
Dries committed
487
    $vocabulary = variable_get('forum_nav_vocabulary', '');
488
    $containers = variable_get('forum_containers', array());
Dries's avatar
   
Dries committed
489
    foreach ($node->taxonomy as $term) {
Dries's avatar
   
Dries committed
490
      if (db_result(db_query('SELECT COUNT(*) FROM {term_data} WHERE tid = %d AND vid = %d', $term, $vocabulary))) {
491
492
        if (in_array($term, $containers)) {
          $term = taxonomy_get_term($term);
493
          form_set_error('taxonomy', t('The item %forum is only a container for forums. Please select one of the forums below it.', array('%forum' => theme('placeholder', $term->name))));
494
495
496
497
        }
        else {
          $node->tid = $term;
        }
Dries's avatar
   
Dries committed
498
      }
499
    }
Dries's avatar
   
Dries committed
500
501
502
503
504
505
506
    if ($node->tid && $node->shadow) {
      $terms = array_keys(taxonomy_node_get_terms($node->nid));
      if (!in_array($node->tid, $terms)) {
        $terms[] = $node->tid;
      }
      $node->taxonomy = $terms;
    }
Dries's avatar
Dries committed
507
508
509
  }
}

Dries's avatar
   
Dries committed
510
511
512
513
514
515
516
/**
 * Implementation of hook_update().
 */
function forum_update($node) {
  db_query('UPDATE {forum} SET tid = %d WHERE nid = %d', $node->tid, $node->nid);
}

517
518
519
/**
 * Implementation of hook_form().
 */
Dries's avatar
   
Dries committed
520
function forum_form(&$node) {
Dries's avatar
   
Dries committed
521
  if (!$node->nid) {
Dries's avatar
Dries committed
522
    // new topic
Dries's avatar
   
Dries committed
523
    $node->taxonomy[] = arg(3);
524
  }
Dries's avatar
   
Dries committed
525
526
527
  else {
    $node->taxonomy = array($node->tid);
  }
528

Dries's avatar
   
Dries committed
529
  $output = implode('', taxonomy_node_form('forum', $node));
Dries's avatar
Dries committed
530
531
532

  if ($node->nid) {
    // if editing, give option to leave shadows
Dries's avatar
   
Dries committed
533
534
    $shadow = (count(taxonomy_node_get_terms($node->nid)) > 1);
    $output .= form_checkbox(t('Leave shadow copy'), 'shadow', 1, $shadow, t('If you move this topic, you can leave a link in the old forum to the new forum.'));
Dries's avatar
Dries committed
535
  }
Dries's avatar
   
Dries committed
536

537
  $output .= form_textarea(t('Body'), 'body', $node->body, 60, 20, '');
538
  $output .= filter_form('format', $node->format);
Dries's avatar
   
Dries committed
539
540
541
542

  return $output;
}

543
544
545
/**
 * Implementation of hook_insert().
 */
Dries's avatar
   
Dries committed
546
function forum_insert($node) {
Dries's avatar
   
Dries committed
547
  db_query('INSERT INTO {forum} (nid, tid) VALUES (%d, %d)', $node->nid, $node->tid);
Dries's avatar
   
Dries committed
548
549
}

550
551
552
/**
 * Implementation of hook_delete().
 */
Dries's avatar
   
Dries committed
553
function forum_delete(&$node) {
Dries's avatar
   
Dries committed
554
  db_query('DELETE FROM {forum} WHERE nid = %d', $node->nid);
Dries's avatar
   
Dries committed
555
}
Dries's avatar
   
Dries committed
556

Dries's avatar
   
Dries committed
557
558
559
/**
 * Formats a topic for display
 *
560
 * @TODO Give a better description. Not sure where this function is used yet.
Dries's avatar
   
Dries committed
561
 */
Dries's avatar
   
Dries committed
562
function _forum_format($topic) {
563
  if ($topic && $topic->timestamp) {
Dries's avatar
   
Dries committed
564
    return t('%time ago<br />by %author', array('%time' => format_interval(time() - $topic->timestamp), '%author' => format_name($topic)));
Dries's avatar
   
Dries committed
565
566
567
568
569
570
  }
  else {
    return message_na();
  }
}

Dries's avatar
   
Dries committed
571
572
573
/**
 * Returns a list of all forums for a given taxonomy id
 *
574
 * Forum objects contain the following fields
Dries's avatar
   
Dries committed
575
576
577
578
579
580
581
582
583
 * -num_topics Number of topics in the forum
 * -num_posts Total number of posts in all topics
 * -last_post Most recent post for the forum
 *
 * @param $tid
 *   Taxonomy ID of the vocabulary that holds the forum list.
 * @return
 *   Array of object containing the forum information.
 */
Dries's avatar
   
Dries committed
584
function forum_get_forums($tid = 0) {
585

Dries's avatar
   
Dries committed
586
587
588
589
  if (!$tid) {
    $tid = 0;
  }

Dries's avatar
   
Dries committed
590
591
  $forums = array();
  $_forums = taxonomy_get_tree(variable_get('forum_nav_vocabulary', ''), $tid);
Dries's avatar
   
Dries committed
592

Dries's avatar
   
Dries committed
593
  if (count($_forums)) {
Dries's avatar
   
Dries committed
594

Dries's avatar
   
Dries committed
595
596
    $counts = array();

Dries's avatar
   
Dries committed
597
    $sql = "SELECT r.tid, COUNT(n.nid) AS topic_count, SUM(l.comment_count) AS comment_count FROM {node} n INNER JOIN {node_comment_statistics} l ON n.nid = l.nid INNER JOIN {term_node} r ON n.nid = r.nid WHERE n.status = 1 AND n.type = 'forum' GROUP BY r.tid";
598
    $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
599
    $_counts = db_query($sql, $forum->tid);
Dries's avatar
   
Dries committed
600
601
602
    while ($count = db_fetch_object($_counts)) {
      $counts[$count->tid] = $count;
    }
Dries's avatar
   
Dries committed
603
  }
Dries's avatar
   
Dries committed
604

Dries's avatar
   
Dries committed
605
606
607
608
  foreach ($_forums as $forum) {
    if (in_array($forum->tid, variable_get('forum_containers', array()))) {
      $forum->container = 1;
    }
Dries's avatar
   
Dries committed
609

Dries's avatar
   
Dries committed
610
611
612
613
614
615
616
617
618
619
620
    if ($counts[$forum->tid]) {
      $forum->num_topics = $counts[$forum->tid]->topic_count;
      $forum->num_posts = $counts[$forum->tid]->topic_count + $counts[$forum->tid]->comment_count;
    }
    else {
      $forum->num_topics = 0;
      $forum->num_posts = 0;
    }

    // This query does not use full ANSI syntax since MySQL 3.x does not support
    // table1 INNER JOIN table2 INNER JOIN table3 ON table2_criteria ON table3_criteria
Dries's avatar
   
Dries committed
621
    // used to join node_comment_statistics to users.
Dries's avatar
   
Dries committed
622
    $sql = "SELECT n.nid, l.last_comment_timestamp, IF(l.last_comment_uid, cu.name, l.last_comment_name) as last_comment_name, l.last_comment_uid FROM {node} n, {node_comment_statistics} l /*! USE INDEX (node_comment_timestamp) */, {users} cu, {term_node} r WHERE  n.nid = r.nid AND r.tid = %d AND n.status = 1 AND n.type = 'forum' AND l.last_comment_uid = cu.uid AND n.nid = l.nid ORDER BY l.last_comment_timestamp DESC";
623
    $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
624
    $topic = db_fetch_object(db_query_range($sql, $forum->tid, 0, 1));
625
626

    $last_post = new StdClass();
Dries's avatar
   
Dries committed
627
628
629
630
    $last_post->timestamp = $topic->last_comment_timestamp;
    $last_post->name = $topic->last_comment_name;
    $last_post->uid = $topic->last_comment_uid;
    $forum->last_post = $last_post;
Dries's avatar
   
Dries committed
631

Dries's avatar
   
Dries committed
632
633
634
635
    $forums[$forum->tid] = $forum;
  }

  return $forums;
Dries's avatar
   
Dries committed
636
637
}

638
639
640
641
function _forum_topics_read($term, $uid) {
  // Calculate the number of topics the user has read. Assume all entries older
  // than NODE_NEW_LIMIT are read, and include the recent posts that user has
  // read.
Dries's avatar
   
Dries committed
642
  $sql = "SELECT COUNT(n.nid) FROM {node} n INNER JOIN {term_node} r ON n.nid = r.nid AND r.tid = %d WHERE n.created <= %d AND n.status = 1 AND n.type = 'forum'";
643
  $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
644
645
  $ancient = db_result(db_query($sql, $term, NODE_NEW_LIMIT));
  $sql = "SELECT COUNT(n.nid) FROM {node} n INNER JOIN {history} h ON n.nid = h.nid AND h.uid = %d INNER JOIN {term_node} r ON n.nid = r.nid AND r.tid = %d WHERE n.status = 1 AND n.type = 'forum' AND n.created > %d";
646
  $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
647
  $recent = db_result(db_query($sql, $uid, $term, NODE_NEW_LIMIT));
Dries's avatar
   
Dries committed
648

649
  return $ancient + $recent;
Dries's avatar
   
Dries committed
650
651
}

Dries's avatar
Dries committed
652
function forum_get_topics($tid, $sortby, $forum_per_page) {
Dries's avatar
   
Dries committed
653
  global $user, $forum_topic_list_header;
Dries's avatar
   
Dries committed
654

Dries's avatar
   
Dries committed
655
  $forum_topic_list_header = array(
Dries's avatar
   
Dries committed
656
657
    array('data' => '&nbsp;'),
    array('data' => t('Topic'), 'field' => 'n.title'),
Dries's avatar
   
Dries committed
658
    array('data' => t('Replies'), 'field' => 'l.comment_count'),
Dries's avatar
   
Dries committed
659
    array('data' => t('Created'), 'field' => 'n.created'),
Dries's avatar
   
Dries committed
660
    array('data' => t('Last reply'), 'field' => 'l.last_comment_timestamp'),
Dries's avatar
   
Dries committed
661
  );
Dries's avatar
   
Dries committed
662

Dries's avatar
   
Dries committed
663
  $order = _forum_get_topic_order($sortby);
Dries's avatar
   
Dries committed
664
  for ($i = 0; $i < count($forum_topic_list_header); $i++) {
Dries's avatar
   
Dries committed
665
666
    if ($forum_topic_list_header[$i]['field'] == $order['field']) {
      $forum_topic_list_header[$i]['sort'] = $order['sort'];
Dries's avatar
   
Dries committed
667
668
669
670
    }
  }

  $term = taxonomy_get_term($tid);
Dries's avatar
   
Dries committed
671

672
  $sql = db_rewrite_sql("SELECT n.nid, f.tid, n.title, n.sticky, u.name, u.uid, n.created AS timestamp, n.comment AS comment_mode, l.last_comment_timestamp, IF(l.last_comment_uid, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node} n, {node_comment_statistics} l, {users} cu, {term_node} r, {users} u, {forum} f WHERE n.status = 1 AND l.last_comment_uid = cu.uid AND n.nid = l.nid AND n.nid = r.nid AND r.tid = %d AND n.uid = u.uid AND n.nid = f.nid");
Dries's avatar
   
Dries committed
673
  $sql .= tablesort_sql($forum_topic_list_header, 'n.sticky DESC,');
Dries's avatar
Dries committed
674

675
  $sql_count = db_rewrite_sql("SELECT COUNT(n.nid) FROM {node} n INNER JOIN {term_node} r ON n.nid = r.nid AND r.tid = %d WHERE n.status = 1 AND n.type = 'forum'");
Dries's avatar
   
Dries committed
676

Steven Wittens's avatar
Steven Wittens committed
677
  $result = pager_query($sql, $forum_per_page, 0, $sql_count, $tid);
Dries's avatar
   
Dries committed
678
679

  while ($topic = db_fetch_object($result)) {
Dries's avatar
Dries committed
680
681
    if ($user->uid) {
      // folder is new if topic is new or there are new comments since last visit
Dries's avatar
   
Dries committed
682
      if ($topic->tid != $tid) {
Dries's avatar
Dries committed
683
        $topic->new = 0;
Dries's avatar
   
Dries committed
684
685
      }
      else {
Dries's avatar
   
Dries committed
686
        $history = _forum_user_last_visit($topic->nid);
Dries's avatar
   
Dries committed
687
        $topic->new_replies = comment_num_new($topic->nid, $history);
688
        $topic->new = $topic->new_replies || ($topic->timestamp > $history);
Dries's avatar
   
Dries committed
689
      }
690
691
    }
    else {
692
      // Do not track "new replies" status for topics if the user is anonymous.
Dries's avatar
Dries committed
693
694
      $topic->new_replies = 0;
      $topic->new = 0;
695
    }
Dries's avatar
   
Dries committed
696

Dries's avatar
   
Dries committed
697
    if ($topic->num_comments > 0) {
698
      $last_reply = new StdClass();
Dries's avatar
   
Dries committed
699
700
701
702
703
      $last_reply->timestamp = $topic->last_comment_timestamp;
      $last_reply->name = $topic->last_comment_name;
      $last_reply->uid = $topic->last_comment_uid;
      $topic->last_reply = $last_reply;
    }
Dries's avatar
   
Dries committed
704
705
706
    $topics[] = $topic;
  }

Dries's avatar
Dries committed
707
  return $topics;
Dries's avatar
   
Dries committed
708
709
}

Dries's avatar
   
Dries committed
710
711
712
/**
 * Finds the first unread node for a given forum.
 */
Dries's avatar
Dries committed
713
function _forum_new($tid) {
Dries's avatar
   
Dries committed
714
715
  global $user;

Dries's avatar
   
Dries committed
716
  $sql = "SELECT n.nid FROM {node} n LEFT JOIN {history} h ON n.nid = h.nid AND h.uid = %d INNER JOIN {term_node} r ON n.nid = r.nid AND r.tid = %d WHERE n.status = 1 AND n.type = 'forum' AND h.nid IS NULL AND n.created > %d ORDER BY created";
717
  $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
718
  $nid = db_result(db_query_range($sql, $user->uid, $tid, NODE_NEW_LIMIT, 0, 1));
Dries's avatar
   
Dries committed
719
720
721
722

  return $nid ? $nid : 0;
}

723
/**
Dries's avatar
Dries committed
724
 * Menu callback; prints a forum listing.
725
 */
Dries's avatar
Dries committed
726
function forum_page($tid = 0) {
Dries's avatar
   
Dries committed
727
  global $user;
Dries's avatar
   
Dries committed
728

Dries's avatar
   
Dries committed
729
  if (module_exist('taxonomy')) {
Dries's avatar
Dries committed
730
731
    $forum_per_page = variable_get('forum_per_page', 25);
    $sortby = variable_get('forum_order', 1);
Dries's avatar
   
Dries committed
732

Dries's avatar
Dries committed
733
734
735
736
    $forums = forum_get_forums($tid);
    $parents = taxonomy_get_parents_all($tid);
    if ($tid && !in_array($tid, variable_get('forum_containers', array()))) {
      $topics = forum_get_topics($tid, $sortby, $forum_per_page);
Dries's avatar
   
Dries committed
737
    }
Dries's avatar
Dries committed
738

Dries's avatar
   
Dries committed
739
    return theme('forum_display', $forums, $topics, $parents, $tid, $sortby, $forum_per_page);
Dries's avatar
   
Dries committed
740
741
  }
  else {
742
    drupal_set_title(t('Warning'));
Dries's avatar
   
Dries committed
743
    return forum_help('admin/settings/forum');
Dries's avatar
   
Dries committed
744
745
746
  }
}

Dries's avatar
   
Dries committed
747
/**
Dries's avatar
   
Dries committed
748
749
 * Format the forum body.
 *
Dries's avatar
   
Dries committed
750
 * @ingroup themeable
Dries's avatar
   
Dries committed
751
 */
Dries's avatar
   
Dries committed
752
function theme_forum_display($forums, $topics, $parents, $tid, $sortby, $forum_per_page) {
Dries's avatar
   
Dries committed
753
  global $user;
Dries's avatar
   
Dries committed
754
  // forum list, topics list, topic browser and 'add new topic' link
Dries's avatar
   
Dries committed
755

Dries's avatar
   
Dries committed
756
  $vocabulary = taxonomy_get_vocabulary(variable_get('forum_nav_vocabulary', ''));
757
  $title = $vocabulary->name;
Dries's avatar
   
Dries committed
758

Dries's avatar
   
Dries committed
759
760
  // Breadcrumb navigation:
  $breadcrumb = array();
Dries's avatar
   
Dries committed
761
  if ($tid) {
Dries's avatar
   
Dries committed
762
    $breadcrumb[] = array('path' => 'forum', 'title' => $title);
Dries's avatar
   
Dries committed
763
  }
Dries's avatar
   
Dries committed
764
765

  if ($parents) {
Dries's avatar
   
Dries committed
766
767
    $parents = array_reverse($parents);
    foreach ($parents as $p) {
768
769
      if ($p->tid == $tid) {
        $title = $p->name;
Dries's avatar
   
Dries committed
770
771
      }
      else {
Dries's avatar
   
Dries committed
772
        $breadcrumb[] = array('path' => 'forum/'. $p->tid, 'title' => $p->name);
Dries's avatar
   
Dries committed
773
774
775
      }
    }
  }
776
777
778

  drupal_set_title($title);

Dries's avatar
   
Dries committed
779
780
  $breadcrumb[] = array('path' => $_GET['q']);
  menu_set_location($breadcrumb);
Dries's avatar
   
Dries committed
781

Dries's avatar
   
Dries committed
782
  if (count($forums) || count($parents)) {
783
784
    $output  = '<div id="forum">';
    $output .= '<ul>';
Dries's avatar
   
Dries committed
785
786
787

    if (module_exist('tracker')) {
      if ($user->uid) {
Dries's avatar
   
Dries committed
788
        $output .= ' <li>'. l(t('My forum discussions.'), "tracker/$user->uid") .'</li>';
Dries's avatar
   
Dries committed
789
790
      }

Dries's avatar
   
Dries committed
791
      $output .= ' <li>'. l(t('Active forum discussions.'), 'tracker') .'</li>';
Dries's avatar
   
Dries committed
792
793
794
    }

    if (user_access('create forum topics')) {
795
      $output .= '<li>'. l(t('Post new forum topic.'), "node/add/forum/$tid") .'</li>';
Dries's avatar
   
Dries committed
796
797
    }
    else if ($user->uid) {
798
      $output .= '<li>'. t('You are not allowed to post a new forum topic.') .'</li>';
Dries's avatar
   
Dries committed
799
800
801
802
    }
    else {
      $output .= '<li>'. t('<a href="%login">Login</a> to post a new forum topic.', array('%login' => url('user/login'))) .'</li>';
    }
803
    $output .= '</ul>';
Dries's avatar
   
Dries committed
804

Dries's avatar
   
Dries committed
805
    $output .= theme('forum_list', $forums, $parents, $tid);
Dries's avatar
   
Dries committed
806

Dries's avatar
   
Dries committed
807
    if ($tid && !in_array($tid, variable_get('forum_containers', array()))) {
Dries's avatar
   
Dries committed
808
809
      drupal_set_html_head('<link rel="alternate" type="application/rss+xml" title="RSS - '. $title .'" href="'. url('taxonomy/term/'. $tid .'/0/feed') .'" />');

Dries's avatar
   
Dries committed
810
      $output .= theme('forum_topic_list', $tid, $topics, $sortby, $forum_per_page);
Dries's avatar
   
Dries committed
811
      $output .= theme('xml_icon', url("taxonomy/term/$tid/0/feed"));
Dries's avatar
   
Dries committed
812
    }
813
    $output .= '</div>';
Dries's avatar
   
Dries committed
814
815
  }
  else {
816
    drupal_set_title(t('No forums defined'));
Dries's avatar
   
Dries committed
817
    $output = '';
Dries's avatar
   
Dries committed
818
819
  }

820
  return $output;
Dries's avatar
   
Dries committed
821
822
}

Dries's avatar
   
Dries committed
823
/**
Dries's avatar
   
Dries committed
824
825
 * Format the forum listing.
 *
Dries's avatar
   
Dries committed
826
 * @ingroup themeable
Dries's avatar
   
Dries committed
827
 */
Dries's avatar
   
Dries committed
828
function theme_forum_list($forums, $parents, $tid) {
Dries's avatar
   
Dries committed
829
830
  global $user;

Dries's avatar
   
Dries committed
831
832
  if ($forums) {

Dries's avatar
   
Dries committed
833
    $header = array(t('Forum'), t('Topics'), t('Posts'), t('Last post'));
Dries's avatar
   
Dries committed
834
835

    foreach ($forums as $forum) {
Dries's avatar
   
Dries committed
836
      if ($forum->container) {
837
838
        $description  = '<div style="margin-left: '. ($forum->depth * 30) ."px;\">\n";
        $description .= ' <div class="name">'. l($forum->name, "forum/$forum->tid") ."</div>\n";
Dries's avatar
   
Dries committed
839
840
841
842
843
844

        if ($forum->description) {
          $description .= " <div class=\"description\">$forum->description</div>\n";
        }
        $description .= "</div>\n";

Dries's avatar
   
Dries committed
845
        $rows[] = array(array('data' => $description, 'class' => 'container', 'colspan' => '4'));
846
      }
Dries's avatar
   
Dries committed
847
      else {
848
        $forum->old_topics = _forum_topics_read($forum->tid, $user->uid);
Dries's avatar
   
Dries committed
849
850
851
        if ($user->uid) {
          $new_topics = $forum->num_topics - $forum->old_topics;
        }
Dries's avatar
   
Dries committed
852
853
854
        else {
          $new_topics = 0;
        }
Dries's avatar
   
Dries committed
855

856
857
        $description  = '<div style="margin-left: '. ($forum->depth * 30) ."px;\">\n";
        $description .= ' <div class="name">'. l($forum->name, "forum/$forum->tid") ."</div>\n";
Dries's avatar
   
Dries committed
858

Dries's avatar
   
Dries committed
859
860
861
862
        if ($forum->description) {
          $description .= " <div class=\"description\">$forum->description</div>\n";
        }
        $description .= "</div>\n";
Dries's avatar
   
Dries committed
863

Dries's avatar
   
Dries committed
864
        $rows[] = array(
Dries's avatar
   
Dries committed
865
          array('data' => $description, 'class' => 'forum'),
866
          array('data' => $forum->num_topics . ($new_topics ? '<br />'. l(t('%a new', array('%a' => $new_topics)), "forum/$forum->tid", NULL, NULL, 'new') : ''), 'class' => 'topics'),
Dries's avatar
   
Dries committed
867
868
          array('data' => $forum->num_posts, 'class' => 'posts'),
          array('data' => _forum_format($forum->last_post), 'class' => 'last-reply'));
Dries's avatar
   
Dries committed
869
      }
Dries's avatar
   
Dries committed
870
    }
Dries's avatar
   
Dries committed
871
872
873

    return theme('table', $header, $rows);

Dries's avatar
   
Dries committed
874
875
876
877
  }

}

Dries's avatar
   
Dries committed
878
/**
Dries's avatar
   
Dries committed
879
880
 * Format the topic listing.
 *
Dries's avatar
   
Dries committed
881
 * @ingroup themeable
Dries's avatar
   
Dries committed
882
 */
Dries's avatar
   
Dries committed
883
884
function theme_forum_topic_list($tid, $topics, $sortby, $forum_per_page) {
  global $forum_topic_list_header;
Dries's avatar
   
Dries committed
885
886

  if ($topics) {
Dries's avatar
   
Dries committed
887

Dries's avatar
   
Dries committed
888
889
    foreach ($topics as $topic) {
      // folder is new if topic is new or there are new comments since last visit
Dries's avatar
Dries committed
890
      if ($topic->tid != $tid) {
Dries's avatar
   
Dries committed
891
        $rows[] = array(
Dries's avatar
   
Dries committed
892
          array('data' => _forum_icon($topic->new, $topic->num_comments, $topic->comment_mode, $topic->sticky), 'class' => 'icon'),
893
          array('data' => check_plain($topic->title), 'class' => 'title'),
Dries's avatar
   
Dries committed
894
          array('data' => l(t('This topic has been moved'), "forum/$topic->tid"), 'colspan' => '3')
Dries's avatar
   
Dries committed
895
        );
Dries's avatar
   
Dries committed
896
897
      }
      else {
Dries's avatar
   
Dries committed
898
        $rows[] = array(
Dries's avatar
   
Dries committed
899
          array('data' => _forum_icon($topic->new, $topic->num_comments, $topic->comment_mode, $topic->sticky), 'class' => 'icon'),
Dries's avatar
   
Dries committed
900
901
          array('data' => l($topic->title, "node/$topic->nid"), 'class' => 'topic'),
          array('data' => $topic->num_comments . ($topic->new_replies ? '<br />'. l(t('%a new', array('%a' => $topic->new_replies)), "node/$topic->nid", NULL, NULL, 'new') : ''), 'class' => 'replies'),
Dries's avatar
   
Dries committed
902
903
          array('data' => _forum_format($topic), 'class' => 'created'),
          array('data' => _forum_format($topic->last_reply), 'class' => 'last-reply')
Dries's avatar
   
Dries committed
904
        );
Dries's avatar
   
Dries committed
905
906
907
      }
    }

Dries's avatar
   
Dries committed
908
909
    if ($pager = theme('pager', NULL, $forum_per_page, 0, tablesort_pager())) {
      $rows[] = array(array('data' => $pager, 'colspan' => '5', 'class' => 'pager'));
Dries's avatar
   
Dries committed
910
911
    }
  }
Dries's avatar
   
Dries committed
912

Dries's avatar
   
Dries committed
913
  $output .= theme('table', $forum_topic_list_header, $rows);
Dries's avatar
   
Dries committed
914

Dries's avatar
   
Dries committed
915
916
917
  return $output;
}

Dries's avatar
   
Dries committed
918
function _forum_icon($new_posts, $num_posts = 0, $comment_mode = 0, $sticky = 0) {
Dries's avatar
   
Dries committed
919

Dries's avatar
   
Dries committed
920
  $base_path = variable_get('forum_icon_path', '');
Dries's avatar
   
Dries committed
921
  if ($base_path) {
Dries's avatar
   
Dries committed
922
923
    if ($num_posts > variable_get('forum_hot_topic', 15)) {
      $icon = $new_posts ? 'hot-new' : 'hot';
Dries's avatar
   
Dries committed
924
925
    }
    else {
Dries's avatar
   
Dries committed
926
      $icon = $new_posts ? 'new' : 'default';
Dries's avatar
   
Dries committed
927
928
929
    }

    if ($comment_mode == 1) {
Dries's avatar
   
Dries committed
930
      $icon = 'closed';
Dries's avatar
   
Dries committed
931
932
    }

Dries's avatar
   
Dries committed
933
934
935
936
    if ($sticky == 1) {
      $icon = 'sticky';
    }

Dries's avatar
   
Dries committed
937
    // default
Dries's avatar
   
Dries committed
938
    $file = "misc/forum-$icon.png";
Dries's avatar
   
Dries committed
939

Dries's avatar
   
Dries committed
940
    $output = theme('image', $file);
Dries's avatar
   
Dries committed
941
942
  }
  else {
Dries's avatar
   
Dries committed
943
    $output = '&nbsp;';
Dries's avatar
   
Dries committed
944
  }
Dries's avatar
   
Dries committed
945
946
947
948
949
950

  if ($new_posts) {
    $output = "<a name=\"new\">$output</a>";
  }

  return $output;
Dries's avatar
   
Dries committed
951
952
953
954
}

function _forum_user_last_visit($nid) {
  global $user;
955
956
957
  static $history = array();

  if (empty($history)) {
Dries's avatar
   
Dries committed
958
    $result = db_query('SELECT nid, timestamp FROM {history} WHERE uid = %d', $user->uid);
Dries's avatar
   
Dries committed
959
    while ($t = db_fetch_object($result)) {
960
      $history[$t->nid] = $t->timestamp > NODE_NEW_LIMIT ? $t->timestamp : NODE_NEW_LIMIT;
Dries's avatar
   
Dries committed
961
962
    }
  }
963
  return $history[$nid] ? $history[$nid] : NODE_NEW_LIMIT;
Dries's avatar
   
Dries committed
964
965
966
967
968
}

function _forum_get_topic_order($sortby) {
  switch ($sortby) {
    case 1:
Dries's avatar
   
Dries committed
969
      return array('field' => 'l.last_comment_timestamp', 'sort' => 'desc');
Dries's avatar
   
Dries committed
970
971
      break;
    case 2:
Dries's avatar
   
Dries committed
972
      return array('field' => 'l.last_comment_timestamp', 'sort' => 'asc');
Dries's avatar
   
Dries committed
973
974
      break;
    case 3:
Dries's avatar
   
Dries committed
975
      return array('field' => 'l.comment_count', 'sort' => 'desc');
Dries's avatar
   
Dries committed
976
977
      break;
    case 4:
Dries's avatar
   
Dries committed
978
      return array('field' => 'l.comment_count', 'sort' => 'asc');
Dries's avatar
   
Dries committed
979
980
981
982
      break;
  }
}

Dries's avatar