forum.module 39.4 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
15
16
17
18
19
20
21
22
23
24
25
    case 'admin/help#forum':
      $output = '<p>'. t('The forum module lets you create threaded discussion forums for a particular topic on your site. This is similar to a message board system such as phpBB. Forums are very useful because they allow community members to discuss topics with one another, and they are archived for future reference.') .'</p>';
      $output .= '<p>'. t('Forums can be organized under what are called <em>containers</em>. 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.  Forum topics can be moved by selecting a different forum and can be left in the existing forum by selecting <em>leave a shadow copy</em>.  Forum topics can also have their own URL.') .'</p>';
      $output .= '<p>'. t('Forums module <strong>requires Taxonomy and Comments module</strong> be enabled.') .'</p>';
      $output .= t('<p>You can</p>
<ul>
<li>administer forums at <a href="%admin-forum">administer &gt;&gt; forums</a>.</li>
<li>enable the required comment and taxonomy modules at <a href="%admin-modules">administer &gt;&gt; modules</a>.</li>
<li>read about the comment module at <a href="%admin-help-comment">administer &gt;&gt; help &gt;&gt; comment</a>.</li>
<li>read about the taxonomy module at <a href="%admin-help-taxonomy">administer &gt;&gt; help &gt;&gt; taxonomy</a>.</li>
</ul>
', array('%admin-forum' => url('admin/forum'), '%admin-modules' => url('admin/modules'), '%admin-help-comment' => url('admin/help/comment'), '%admin-help-taxonomy' => url('admin/help/taxonomy')));
26
      $output .= '<p>'. t('For more information please read the configuration and customization handbook <a href="%forum">Forum page</a>.', array('%forum' => 'http://drupal.org/handbook/modules/forum/')) .'</p>';
27
28
29
      return $output;
    case 'admin/modules#description':
      return t('Enables threaded discussions about general topics.');
30
    case 'admin/forum':
31
      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>');
32
    case 'admin/forum/add/container':
33
      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>');
34
    case 'admin/forum/add/forum':
35
      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>');
36
37
    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
38
    case 'node/add#forum':
39
      return t('Create a new topic for discussion in the forums.');
Dries's avatar
   
Dries committed
40
41
42
  }
}

43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
/**
 * Implementation of hook_menu().
 */
function forum_menu($may_cache) {
  $items = array();

  if ($may_cache) {
    $items[] = array('path' => 'node/add/forum',
      'title' => t('forum topic'),
      'access' => user_access('create forum topics'));
    $items[] = array('path' => 'forum',
      'title' => t('forums'),
      'callback' => 'forum_page',
      'access' => user_access('access content'),
      'type' => MENU_SUGGESTED_ITEM);
    $items[] = array('path' => 'admin/forum',
      'title' => t('forums'),
      'callback' => 'forum_overview',
      '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'),
      'callback' => 'forum_form_container',
      'access' => user_access('administer forums'),
      'type' => MENU_LOCAL_TASK);
    $items[] = array('path' => 'admin/forum/add/forum',
      'title' => t('add forum'),
      'callback' => 'forum_form_forum',
      'access' => user_access('administer forums'),
      'type' => MENU_LOCAL_TASK);
    $items[] = array('path' => 'admin/forum/configure',
      'title' => t('configure'),
      'callback' => 'forum_admin_configure',
      'access' => user_access('administer forums'),
      'type' => MENU_LOCAL_TASK);
  }
  elseif (is_numeric(arg(4))) {
    $term = taxonomy_get_term(arg(4));
    // Check if this is a valid term.
    if ($term) {
      $items[] = array('path' => 'admin/forum/edit/container',
        'title' => t('edit container'),
        'callback' => 'forum_form_container',
        'callback arguments' => array((array)$term),
        'access' => user_access('administer forums'),
        'type' => MENU_CALLBACK);
      $items[] = array('path' => 'admin/forum/edit/forum',
        'title' => t('edit forum'),
        'callback' => 'forum_form_forum',
        'callback arguments' => array((array)$term),
        'access' => user_access('administer forums'),
        'type' => MENU_CALLBACK);
    }
  }

  return $items;
}

106
/**
107
 * Implementation of hook_node_info().
108
 */
109
function forum_node_info() {
110
  return array('forum' => array('name' => t('forum topic'), 'base' => 'forum'));
Dries's avatar
   
Dries committed
111
112
}

113
114
115
/**
 * Implementation of hook_access().
 */
Dries's avatar
   
Dries committed
116
function forum_access($op, $node) {
Dries's avatar
   
Dries committed
117
118
  global $user;

Dries's avatar
   
Dries committed
119
120
  if ($op == 'create') {
    return user_access('create forum topics');
Dries's avatar
   
Dries committed
121
  }
Dries's avatar
   
Dries committed
122
123
124
125
126
127

  if ($op == 'update' || $op == 'delete') {
    if (user_access('edit own forum topics') && ($user->uid == $node->uid)) {
      return TRUE;
    }
  }
Dries's avatar
   
Dries committed
128
129
}

130
131
132
/**
 * Implementation of hook_perm().
 */
Dries's avatar
   
Dries committed
133
function forum_perm() {
134
  return array('create forum topics', 'edit own forum topics', 'administer forums');
Dries's avatar
   
Dries committed
135
}
Dries's avatar
   
Dries committed
136

137
138
139
140
141
/**
 * Implementation of hook_nodeapi().
 */
function forum_nodeapi(&$node, $op, $teaser, $page) {
  switch ($op) {
142
    case 'delete revision':
143
144
145
146
147
      db_query('DELETE FROM {forum} WHERE vid = %d', $node->vid);
      break;
  }
}

148
149
150
/**
 * Implementation of hook_taxonomy().
 */
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
function forum_taxonomy($op, $type, $term = NULL) {
  if ($op == 'delete' && $term->vid == _forum_get_vid()) {
    switch ($type) {
      case 'term':
        $results = db_query('SELECT f.nid FROM {forum} f WHERE f.tid = %d', $term->tid);
        while ($node = db_fetch_object($results)) {
          // node_delete will also remove any association with non-forum vocabularies.
          node_delete($node->nid);
        }

        // For containers, remove the tid from the forum_containers variable.
        $containers = variable_get('forum_containers', array());
        if ($key = array_search($term->tid, $containers)) {
          unset($containers[$key]);
        }
        variable_set('forum_containers', $containers);
        break;
      case 'vocabulary':
        variable_del('forum_nav_vocabulary');
Dries's avatar
   
Dries committed
170
    }
171
172
  }
}
Dries's avatar
   
Dries committed
173

174
175
176
/**
 * Implementation of hook_settings
 */
177
function forum_admin_configure() {
178

179
  $form = array();
180
  $number = drupal_map_assoc(array(5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 80, 100, 10000));
181
182
183
184
185
186
  $form['forum_hot_topic'] = array('#type' => 'select',
    '#title' => t('Hot topic threshold'),
    '#default_value' => variable_get('forum_hot_topic', 15),
    '#options' => $number,
    '#description' => t('The number of posts a topic must have to be considered hot.'),
  );
187
  $number = drupal_map_assoc(array(10, 25, 50, 75, 100));
188
189
190
191
192
193
  $form['forum_per_page'] = array('#type' => 'select',
    '#title' => t('Topics per page'),
    '#default_value' => variable_get('forum_per_page', 25),
    '#options' => $number,
    '#description' => t('The default number of topics displayed per page; links to browse older messages are automatically being displayed.'),
  );
194
  $forder = array(1 => t('Date - newest first'), 2 => t('Date - oldest first'), 3 => t('Posts - most active first'), 4=> t('Posts - least active first'));
195
196
197
198
199
200
  $form['forum_order'] = array('#type' => 'radios',
    '#title' => t('Default order'),
    '#default_value' => variable_get('forum_order', '1'),
    '#options' => $forder,
    '#description' => t('The default display order for topics.'),
  );
201

202
  return system_settings_form('forum_admin_configure', $form);
203
204
}

205
206
207
/**
 * Implementation of hook_load().
 */
Dries's avatar
   
Dries committed
208
function forum_load($node) {
209
  $forum = db_fetch_object(db_query('SELECT * FROM {forum} WHERE vid = %d', $node->vid));
Dries's avatar
   
Dries committed
210
211
212
213

  return $forum;
}

214
215
216
217
218
219
/**
 * Implementation of hook_block().
 *
 * Generates a block containing the currently active forum topics and the
 * most recently added forum topics.
 */
220
221
222
function forum_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
Dries's avatar
   
Dries committed
223
224
      $blocks[0]['info'] = t('Active forum topics');
      $blocks[1]['info'] = t('New forum topics');
225
      return $blocks;
Dries's avatar
   
Dries committed
226

227
    case 'configure':
228
      $form['forum_block_num_'. $delta] = array('#type' => 'select', '#title' => t('Number of topics'), '#default_value' => variable_get('forum_block_num_'. $delta, '5'), '#options' => drupal_map_assoc(array(2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)));
229
      return $form;
Dries's avatar
   
Dries committed
230

231
    case 'save':
232
      variable_set('forum_block_num_'. $delta, $edit['forum_block_num_'. $delta]);
233
      break;
Dries's avatar
   
Dries committed
234

235
236
    case 'view':
      if (user_access('access content')) {
Dries's avatar
   
Dries committed
237
238
        switch ($delta) {
          case 0:
239
            $title = t('Active forum topics');
240
            $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.status = 1 AND n.type = 'forum' ORDER BY l.last_comment_timestamp DESC");
241
242
243
244
            $result = db_query_range($sql, 0, variable_get('forum_block_num_0', '5'));
            if (db_num_rows($result)) {
              $content = node_title_list($result);
            }
245
            break;
Dries's avatar
   
Dries committed
246
247

          case 1:
248
249
            $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");
250
251
252
253
            $result = db_query_range($sql, 0, variable_get('forum_block_num_1', '5'));
            if (db_num_rows($result)) {
              $content = node_title_list($result);
            }
254
            break;
Dries's avatar
   
Dries committed
255
        }
Dries's avatar
   
Dries committed
256

257
        if ($content) {
258
          $content .= '<div class="more-link">'. l(t('more'), 'forum', array('title' => t('Read the latest forum topics.'))) .'</div>';
259
260
        }

Dries's avatar
   
Dries committed
261
        $block['subject'] = $title;
262
263
264
265
266
        $block['content'] = $content;

        return $block;
      }
  }
Dries's avatar
   
Dries committed
267
268
}

269
270
271
/**
 * Implementation of hook_view().
 */
Dries's avatar
   
Dries committed
272
function forum_view(&$node, $teaser = FALSE, $page = FALSE) {
Dries's avatar
   
Dries committed
273
  if ($page) {
Dries's avatar
   
Dries committed
274
    $vocabulary = taxonomy_get_vocabulary(variable_get('forum_nav_vocabulary', ''));
Dries's avatar
   
Dries committed
275
    // Breadcrumb navigation
Dries's avatar
   
Dries committed
276
277
    $breadcrumb = array();
    $breadcrumb[] = array('path' => 'forum', 'title' => $vocabulary->name);
Dries's avatar
   
Dries committed
278
    if ($parents = taxonomy_get_parents_all($node->tid)) {
Dries's avatar
   
Dries committed
279
280
      $parents = array_reverse($parents);
      foreach ($parents as $p) {
Dries's avatar
   
Dries committed
281
        $breadcrumb[] = array('path' => 'forum/'. $p->tid, 'title' => $p->name);
Dries's avatar
   
Dries committed
282
283
      }
    }
Dries's avatar
   
Dries committed
284
285
    $breadcrumb[] = array('path' => 'node/'. $node->nid);
    menu_set_location($breadcrumb);
286
  }
Dries's avatar
   
Dries committed
287

288
  $node = node_prepare($node, $teaser);
289
290

  $node->body .= theme('forum_topic_navigation', $node);
Dries's avatar
   
Dries committed
291
292
}

293
/**
294
 * Implementation of hook_submit().
295
296
297
298
 *
 * Check in particular that only a "leaf" term in the associated taxonomy
 * vocabulary is selected, not a "container" term.
 */
299
function forum_submit(&$node) {
300
  // Make sure all fields are set properly:
Dries's avatar
   
Dries committed
301
  $node->icon = $node->icon ? $node->icon : '';
Dries's avatar
   
Dries committed
302
303
304

  if ($node->taxonomy) {
    // Extract the node's proper topic ID.
Dries's avatar
   
Dries committed
305
    $vocabulary = variable_get('forum_nav_vocabulary', '');
Dries's avatar
   
Dries committed
306
    foreach ($node->taxonomy as $term) {
Dries's avatar
   
Dries committed
307
      if (db_result(db_query('SELECT COUNT(*) FROM {term_data} WHERE tid = %d AND vid = %d', $term, $vocabulary))) {
308
        $node->tid = $term;
Dries's avatar
   
Dries committed
309
      }
310
    }
Dries's avatar
   
Dries committed
311
    if ($node->tid && $node->shadow) {
312
      // A shadow copy needs to be created. Retain existing term and add new term.
313
      $terms = array_keys(taxonomy_node_get_terms($node->nid));
314
      if (!in_array($node->tid, $terms)) {
Dries's avatar
   
Dries committed
315
316
317
318
        $terms[] = $node->tid;
      }
      $node->taxonomy = $terms;
    }
Dries's avatar
Dries committed
319
320
321
  }
}

322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/**
 * Implementation of hook_validate().
 *
 * Check in particular that only a "leaf" term in the associated taxonomy
 * vocabulary is selected, not a "container" term.
 */
function forum_validate($node) {
  node_validate_title($node,t('You have to specify a subject.'));

  if ($node->taxonomy) {
    // Extract the node's proper topic ID.
    $vocabulary = variable_get('forum_nav_vocabulary', '');
    $containers = variable_get('forum_containers', array());
    foreach ($node->taxonomy as $term) {
      if (db_result(db_query('SELECT COUNT(*) FROM {term_data} WHERE tid = %d AND vid = %d', $term, $vocabulary))) {
        if (in_array($term, $containers)) {
          $term = taxonomy_get_term($term);
          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))));
        }
      }
    }
  }
}

Dries's avatar
   
Dries committed
346
347
348
349
/**
 * Implementation of hook_update().
 */
function forum_update($node) {
350
351
352
353
354
355
  if ($node->is_new || $node->revision) {
    db_query("INSERT INTO {forum} (nid, vid, tid) VALUES (%d, %d, %d)", $node->nid, $node->vid, $node->tid);
  }
  else {
    db_query('UPDATE {forum} SET tid = %d WHERE vid = %d', $node->tid, $node->vid);
  }
Dries's avatar
   
Dries committed
356
357
}

358
359
360
/**
 * Implementation of hook_form().
 */
Dries's avatar
   
Dries committed
361
function forum_form(&$node) {
362
  $form['title'] = array('#type' => 'textfield', '#title' => t('Subject'), '#default_value' => $node->title, '#required' => TRUE, '#weight' => -5);
363

364
  if ($node->nid) {
365
    $forum_terms = taxonomy_node_get_terms_by_vocabulary(_forum_get_vid(), $node->nid);
Dries's avatar
Dries committed
366
    // if editing, give option to leave shadows
367
    $shadow = (count($forum_terms) > 1);
368
    $form['shadow'] = array('#type' => 'checkbox', '#title' => t('Leave shadow copy'), '#default_value' => $shadow, '#description' => t('If you move this topic, you can leave a link in the old forum to the new forum.'));
Dries's avatar
Dries committed
369
  }
Dries's avatar
   
Dries committed
370

371
  $form['body_filter']['body'] = array('#type' => 'textarea', '#title' => t('Body'), '#default_value' => $node->body, '#rows' => 20, '#required' => TRUE);
372
  $form['body_filter']['format'] = filter_form($node->format);
Dries's avatar
   
Dries committed
373

374
  return $form;
Dries's avatar
   
Dries committed
375
376
}

377
378
379
380
381
382
/**
 * Implementation of hook_prepare; assign forum taxonomy when adding a topic from within a forum.
 */
function forum_prepare(&$node) {
  if (!$node->nid) {
    // new topic
383
    $node->taxonomy[arg(3)] = 1;
384
385
386
  }
}

387
388
389
/**
 * Implementation of hook_insert().
 */
Dries's avatar
   
Dries committed
390
function forum_insert($node) {
391
  db_query('INSERT INTO {forum} (nid, vid, tid) VALUES (%d, %d, %d)', $node->nid, $node->vid, $node->tid);
Dries's avatar
   
Dries committed
392
393
}

394
395
396
/**
 * Implementation of hook_delete().
 */
Dries's avatar
   
Dries committed
397
function forum_delete(&$node) {
Dries's avatar
   
Dries committed
398
  db_query('DELETE FROM {forum} WHERE nid = %d', $node->nid);
Dries's avatar
   
Dries committed
399
}
Dries's avatar
   
Dries committed
400

401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
/**
 * 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()) {
  // Handle a delete operation.
  if ($_POST['op'] == t('Delete') || $_POST['edit']['confirm']) {
    return _forum_confirm_delete($edit['tid']);
  }

  $form['name'] = array(
    '#title' => t('Container name'),
    '#type' => 'textfield',
    '#default_value' => $edit['name'],
    '#maxlength' =>  64,
    '#description' => t('The container name is used to identify related forums.'),
    '#required' => TRUE
  );

  $form['description'] = array(
    '#type' => 'textarea',
    '#title' => t('Description'),
    '#default_value' => $edit['description'],
    '#description' => t('The container description can give users more information about the forums it contains.')
  );
  $form['parent']['#tree'] = TRUE;
  $form['parent'][0] = _forum_parent_select($edit['tid'], t('Parent'), 'container');
  $form['weight'] = array('#type' => 'weight',
    '#title' => t('Weight'),
    '#default_value' => $edit['weight'],
    '#description' => 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.')
  );

  $form['vid'] = array('#type' => 'hidden',
    '#value' => _forum_get_vid());
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Submit')
  );
  if ($edit['tid']) {
    $form['delete'] = array('#type' => 'submit', '#value' => t('Delete'));
    $form['tid'] = array('#type' => 'value', '#value' => $edit['tid']);
  }

  return drupal_get_form('forum_form_container', $form, 'forum_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()) {
  // Handle a delete operation.
  if ($_POST['op'] == t('Delete') || $_POST['edit']['confirm']) {
    return _forum_confirm_delete($edit['tid']);
  }

  $form['name'] = array('#type' => 'textfield',
    '#title' => t('Forum name'),
    '#default_value' => $edit['name'],
    '#maxlength' =>  64,
    '#description' => t('The forum name is used to identify related discussions.'),
    '#required' => TRUE,
  );
  $form['description'] = array('#type' => 'textarea',
    '#title' => t('Description'),
    '#default_value' => $edit['description'],
    '#description' => t('The forum description can give users more information about the discussion topics it contains.'),
  );
  $form['parent']['#tree'] = TRUE;
  $form['parent'][0] = _forum_parent_select($edit['tid'], t('Parent'), 'forum');
  $form['weight'] = array('#type' => 'weight',
    '#title' => t('Weight'),
    '#default_value' => $edit['weight'],
    '#description' => t('When listing forums, those with lighter (smaller) weights get listed before containers with heavier (larger) weights. Forums with equal weights are sorted alphabetically.'),
  );

  $form['vid'] = array('#type' => 'hidden', '#value' => _forum_get_vid());
  $form['submit' ] = array('#type' => 'submit', '#value' => t('Submit'));
  if ($edit['tid']) {
    $form['delete'] = array('#type' => 'submit', '#value' => t('Delete'));
    $form['tid'] = array('#type' => 'hidden', '#value' => $edit['tid']);
  }

  return drupal_get_form('forum_form_forum', $form, 'forum_form');
}

/**
 * Process forum form and container form submissions.
 */
function forum_form_submit($form_id, $form_values) {
  if ($form_id == 'forum_form_container') {
    $container = TRUE;
    $type = t('forum container');
  }
  else {
    $container = false;
    $type = t('forum');
  }

  $status = taxonomy_save_term($form_values);
  switch ($status) {
    case SAVED_NEW:
      if ($container) {
        $containers = variable_get('forum_containers', array());
        $containers[] = $form_values['tid'];
        variable_set('forum_containers', $containers);
      }
      drupal_set_message(t('Created new %type %term.', array('%term' => theme('placeholder', $form_values['name']), '%type' => $type)));
      break;
    case SAVED_UPDATED:
      drupal_set_message(t('The %type %term has been updated.', array('%term' => theme('placeholder', $form_values['name']), '%type' => $type)));
      break;
  }
  return 'admin/forum';
}

/**
 * Returns a confirmation page for deleting a forum taxonomy term.
 *
 * @param $tid ID of the term to be deleted
 */
function _forum_confirm_delete($tid) {
  $term = taxonomy_get_term($tid);

  $form['tid'] = array('#type' => 'value', '#value' => $tid);
  $form['name'] = array('#type' => 'value', '#value' => $term->name);

531
  return confirm_form('forum_confirm_delete', $form, t('Are you sure you want to delete the forum %name?', array('%name' => theme('placeholder', $term->name))), 'admin/forums', t('Deleting a forum or container will delete all sub-forums and associated posts as well. This action cannot be undone.'), t('Delete'), t('Cancel'));
532
533
534
535
536
537
538
}

/**
 * Implementation of forms api _submit call. Deletes a forum after confirmation.
 */
function forum_confirm_delete_submit($form_id, $form_values) {
  taxonomy_del_term($form_values['tid']);
539
540
  drupal_set_message(t('The forum %term and all sub-forums and associated posts have been deleted.', array('%term' => theme('placeholder', $form_values['name']))));
  watchdog('content', t('forum: deleted %term and all its sub-forums and associated posts.', array('%term' => theme('placeholder', $form_values['name']))));
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636

  return 'admin/forum';
}

/**
 * Returns an overview list of existing forums and containers
 */
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()))) {
        $rows[] = array(_taxonomy_depth($term->depth) .' '. check_plain($term->name), l(t('edit container'), "admin/forum/edit/container/$term->tid"));
      }
      else {
        $rows[] = array(_taxonomy_depth($term->depth) .' '. check_plain($term->name), l(t('edit forum'), "admin/forum/edit/forum/$term->tid"));
       }

    }
  }
  else {
    $rows[] = array(array('data' => '<em>' . t('There are no existing containers or forums. You may add some on the <a href="%container">add container</a> or <a href="%forum">add forum</a> pages.', array('%container' => url('admin/forum/add/container'), '%forum' => url('admin/forum/add/forum'))) . '</em>', 'colspan' => 2));
  }
  return theme('table', $header, $rows);
}

/**
 * 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 $child_type Whether the child is forum or container
 */
function _forum_parent_select($tid, $title, $child_type) {

  $parents = taxonomy_get_parents($tid);
  if ($parents) {
    $parent = array_shift($parents);
    $parent = $parent->tid;
  }
  else {
    $parent = 0;
  }

  $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] = _taxonomy_depth($term->depth) . $term->name;
      }
    }
  }
  if ($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.');
  }

  return array('#type' => 'select', '#title' => $title, '#default_value' => $parent, '#options' => $options, '#description' => $description, '#required' => TRUE);
}

function forum_term_path($term) {
  return 'forum/'. $term->tid;
}

/**
 * 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) {
      $edit = array('name' => 'Forums', 'multiple' => 0, 'required' => 1, 'hierarchy' => 1, 'relations' => 0, 'module' => 'forum', 'nodes' => array('forum' => 1));
      taxonomy_save_vocabulary($edit);
      $vid = $edit['vid'];
    }
    variable_set('forum_nav_vocabulary', $vid);
  }

  return $vid;
}

Dries's avatar
   
Dries committed
637
638
639
/**
 * Formats a topic for display
 *
640
 * @TODO Give a better description. Not sure where this function is used yet.
Dries's avatar
   
Dries committed
641
 */
Dries's avatar
   
Dries committed
642
function _forum_format($topic) {
643
  if ($topic && $topic->timestamp) {
644
    return t('%time ago<br />by %author', array('%time' => format_interval(time() - $topic->timestamp), '%author' => theme('username', $topic)));
Dries's avatar
   
Dries committed
645
646
647
648
649
650
  }
  else {
    return message_na();
  }
}

Dries's avatar
   
Dries committed
651
652
653
/**
 * Returns a list of all forums for a given taxonomy id
 *
654
 * Forum objects contain the following fields
Dries's avatar
   
Dries committed
655
656
657
658
659
660
661
662
663
 * -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
664
function forum_get_forums($tid = 0) {
665

Dries's avatar
   
Dries committed
666
667
668
669
  if (!$tid) {
    $tid = 0;
  }

Dries's avatar
   
Dries committed
670
671
  $forums = array();
  $_forums = taxonomy_get_tree(variable_get('forum_nav_vocabulary', ''), $tid);
Dries's avatar
   
Dries committed
672

Dries's avatar
   
Dries committed
673
  if (count($_forums)) {
Dries's avatar
   
Dries committed
674

Dries's avatar
   
Dries committed
675
676
    $counts = array();

Dries's avatar
   
Dries committed
677
    $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";
678
    $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
679
    $_counts = db_query($sql, $forum->tid);
Dries's avatar
   
Dries committed
680
681
682
    while ($count = db_fetch_object($_counts)) {
      $counts[$count->tid] = $count;
    }
Dries's avatar
   
Dries committed
683
  }
Dries's avatar
   
Dries committed
684

Dries's avatar
   
Dries committed
685
686
687
688
  foreach ($_forums as $forum) {
    if (in_array($forum->tid, variable_get('forum_containers', array()))) {
      $forum->container = 1;
    }
Dries's avatar
   
Dries committed
689

Dries's avatar
   
Dries committed
690
691
692
693
694
695
696
697
698
699
700
    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
701
    // used to join node_comment_statistics to users.
702
    $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 != 0, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node} n INNER JOIN {users} u ON n.uid = u.uid INNER JOIN {term_node} r ON n.nid = r.nid INNER JOIN {forum} f ON n.vid = f.vid INNER JOIN {node_comment_statistics} l ON n.nid = l.nid INNER JOIN {users} cu ON l.last_comment_uid = cu.uid WHERE n.status = 1 AND r.tid = %d";
703
    $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
704
    $topic = db_fetch_object(db_query_range($sql, $forum->tid, 0, 1));
705
706

    $last_post = new StdClass();
Dries's avatar
   
Dries committed
707
708
709
710
    $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
711

Dries's avatar
   
Dries committed
712
713
714
715
    $forums[$forum->tid] = $forum;
  }

  return $forums;
Dries's avatar
   
Dries committed
716
717
}

718
719
720
721
722
/**
 * Calculate the number of nodes the user has not yet read and are newer
 * than NODE_NEW_LIMIT.
 */
function _forum_topics_unread($term, $uid) {
723
  $sql = "SELECT COUNT(n.nid) FROM {node} n INNER JOIN {term_node} tn ON n.nid = tn.nid AND tn.tid = %d LEFT JOIN {history} h ON n.nid = h.nid AND h.uid = %d WHERE n.status = 1 AND n.type = 'forum' AND n.created > %d AND h.nid IS NULL";
724
  $sql = db_rewrite_sql($sql);
725
  return db_result(db_query($sql, $term, $uid, NODE_NEW_LIMIT));
Dries's avatar
   
Dries committed
726
727
}

Dries's avatar
Dries committed
728
function forum_get_topics($tid, $sortby, $forum_per_page) {
Dries's avatar
   
Dries committed
729
  global $user, $forum_topic_list_header;
Dries's avatar
   
Dries committed
730

Dries's avatar
   
Dries committed
731
  $forum_topic_list_header = array(
Dries's avatar
   
Dries committed
732
733
    array('data' => '&nbsp;'),
    array('data' => t('Topic'), 'field' => 'n.title'),
Dries's avatar
   
Dries committed
734
    array('data' => t('Replies'), 'field' => 'l.comment_count'),
Dries's avatar
   
Dries committed
735
    array('data' => t('Created'), 'field' => 'n.created'),
Dries's avatar
   
Dries committed
736
    array('data' => t('Last reply'), 'field' => 'l.last_comment_timestamp'),
Dries's avatar
   
Dries committed
737
  );
Dries's avatar
   
Dries committed
738

Dries's avatar
   
Dries committed
739
  $order = _forum_get_topic_order($sortby);
Dries's avatar
   
Dries committed
740
  for ($i = 0; $i < count($forum_topic_list_header); $i++) {
Dries's avatar
   
Dries committed
741
742
    if ($forum_topic_list_header[$i]['field'] == $order['field']) {
      $forum_topic_list_header[$i]['sort'] = $order['sort'];
Dries's avatar
   
Dries committed
743
744
745
746
    }
  }

  $term = taxonomy_get_term($tid);
Dries's avatar
   
Dries committed
747

748
  $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 != 0, cu.name, l.last_comment_name) AS last_comment_name, l.last_comment_uid, l.comment_count AS num_comments FROM {node_comment_statistics} l, {users} cu, {term_node} r, {users} u, {forum} f, {node} n 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.vid = f.vid");
Dries's avatar
   
Dries committed
749
  $sql .= tablesort_sql($forum_topic_list_header, 'n.sticky DESC,');
750
  $sql .= ', n.created DESC';  // Always add a secondary sort order so that the news forum topics are on top.
Dries's avatar
Dries committed
751

752
  $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
753

Steven Wittens's avatar
Steven Wittens committed
754
  $result = pager_query($sql, $forum_per_page, 0, $sql_count, $tid);
Dries's avatar
   
Dries committed
755
756

  while ($topic = db_fetch_object($result)) {
Dries's avatar
Dries committed
757
758
    if ($user->uid) {
      // folder is new if topic is new or there are new comments since last visit
Dries's avatar
   
Dries committed
759
      if ($topic->tid != $tid) {
Dries's avatar
Dries committed
760
        $topic->new = 0;
Dries's avatar
   
Dries committed
761
762
      }
      else {
Dries's avatar
   
Dries committed
763
        $history = _forum_user_last_visit($topic->nid);
Dries's avatar
   
Dries committed
764
        $topic->new_replies = comment_num_new($topic->nid, $history);
765
        $topic->new = $topic->new_replies || ($topic->timestamp > $history);
Dries's avatar
   
Dries committed
766
      }
767
768
    }
    else {
769
      // Do not track "new replies" status for topics if the user is anonymous.
Dries's avatar
Dries committed
770
771
      $topic->new_replies = 0;
      $topic->new = 0;
772
    }
Dries's avatar
   
Dries committed
773

Dries's avatar
   
Dries committed
774
    if ($topic->num_comments > 0) {
775
      $last_reply = new StdClass();
Dries's avatar
   
Dries committed
776
777
778
779
780
      $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
781
782
783
    $topics[] = $topic;
  }

Dries's avatar
Dries committed
784
  return $topics;
Dries's avatar
   
Dries committed
785
786
}

Dries's avatar
   
Dries committed
787
788
789
/**
 * Finds the first unread node for a given forum.
 */
Dries's avatar
Dries committed
790
function _forum_new($tid) {
Dries's avatar
   
Dries committed
791
792
  global $user;

Dries's avatar
   
Dries committed
793
  $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";
794
  $sql = db_rewrite_sql($sql);
Dries's avatar
   
Dries committed
795
  $nid = db_result(db_query_range($sql, $user->uid, $tid, NODE_NEW_LIMIT, 0, 1));
Dries's avatar
   
Dries committed
796
797
798
799

  return $nid ? $nid : 0;
}

800
/**
Dries's avatar
Dries committed
801
 * Menu callback; prints a forum listing.
802
 */
Dries's avatar
Dries committed
803
function forum_page($tid = 0) {
804
  if (module_exist('taxonomy') && module_exist('comment')) {
Dries's avatar
Dries committed
805
806
    $forum_per_page = variable_get('forum_per_page', 25);
    $sortby = variable_get('forum_order', 1);
Dries's avatar
   
Dries committed
807

Dries's avatar
Dries committed
808
809
810
811
    $forums = forum_get_forums($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
812
    }
Dries's avatar
Dries committed
813

Dries's avatar
   
Dries committed
814
    return theme('forum_display', $forums, $topics, $parents, $tid, $sortby, $forum_per_page);
Dries's avatar
   
Dries committed
815
816
  }
  else {
817
818
    drupal_set_message(t('The forum module requires both the taxonomy module and the comment module to be enabled and configured.'), 'error');
    return ' ';
Dries's avatar
   
Dries committed
819
820
821
  }
}

Dries's avatar
   
Dries committed
822
/**
Dries's avatar
   
Dries committed
823
824
 * Format the forum body.
 *
Dries's avatar
   
Dries committed
825
 * @ingroup themeable
Dries's avatar
   
Dries committed
826
 */
Dries's avatar
   
Dries committed
827
function theme_forum_display($forums, $topics, $parents, $tid, $sortby, $forum_per_page) {
Dries's avatar
   
Dries committed
828
  global $user;
Dries's avatar
   
Dries committed
829
  // forum list, topics list, topic browser and 'add new topic' link
Dries's avatar
   
Dries committed
830

Dries's avatar
   
Dries committed
831
  $vocabulary = taxonomy_get_vocabulary(variable_get('forum_nav_vocabulary', ''));
832
  $title = $vocabulary->name;
Dries's avatar
   
Dries committed
833

Dries's avatar
   
Dries committed
834
835
  // Breadcrumb navigation:
  $breadcrumb = array();
Dries's avatar
   
Dries committed
836
  if ($tid) {
Dries's avatar
   
Dries committed
837
    $breadcrumb[] = array('path' => 'forum', 'title' => $title);
Dries's avatar
   
Dries committed
838
  }
Dries's avatar
   
Dries committed
839
840

  if ($parents) {
Dries's avatar
   
Dries committed
841
842
    $parents = array_reverse($parents);
    foreach ($parents as $p) {
843
844
      if ($p->tid == $tid) {
        $title = $p->name;
Dries's avatar
   
Dries committed
845
846
      }
      else {
Dries's avatar
   
Dries committed
847
        $breadcrumb[] = array('path' => 'forum/'. $p->tid, 'title' => $p->name);
Dries's avatar
   
Dries committed
848
849
850
      }
    }
  }
851
852
853

  drupal_set_title($title);

Dries's avatar
   
Dries committed
854
855
  $breadcrumb[] = array('path' => $_GET['q']);
  menu_set_location($breadcrumb);
Dries's avatar
   
Dries committed
856

Dries's avatar
   
Dries committed
857
  if (count($forums) || count($parents)) {
858
859
    $output  = '<div id="forum">';
    $output .= '<ul>';
Dries's avatar
   
Dries committed
860
861
862

    if (module_exist('tracker')) {
      if ($user->uid) {
863
        $output .= ' <li>'. l(t('My discussions.'), "tracker/$user->uid") .'</li>';
Dries's avatar
   
Dries committed
864
865
      }

866
      $output .= ' <li>'. l(t('Active discussions.'), 'tracker') .'</li>';
Dries's avatar
   
Dries committed
867
868
869
    }

    if (user_access('create forum topics')) {
870
      $output .= '<li>'. l(t('Post new forum topic.'), "node/add/forum/$tid") .'</li>';
Dries's avatar
   
Dries committed
871
872
    }
    else if ($user->uid) {
873
      $output .= '<li>'. t('You are not allowed to post a new forum topic.') .'</li>';
Dries's avatar
   
Dries committed
874
875
876
877
    }
    else {
      $output .= '<li>'. t('<a href="%login">Login</a> to post a new forum topic.', array('%login' => url('user/login'))) .'</li>';
    }
878
    $output .= '</ul>';
Dries's avatar
   
Dries committed
879

Dries's avatar
   
Dries committed
880
    $output .= theme('forum_list', $forums, $parents, $tid);
Dries's avatar
   
Dries committed
881

Dries's avatar
   
Dries committed
882
    if ($tid && !in_array($tid, variable_get('forum_containers', array()))) {
883
884
885
886
      drupal_add_link(array('rel' => 'alternate',
                            'type' => 'application/rss+xml',
                            'title' => 'RSS - '. $title,
                            'href' => url('taxonomy/term/'. $tid .'/0/feed')));
Dries's avatar
   
Dries committed
887

Dries's avatar
   
Dries committed
888
      $output .= theme('forum_topic_list', $tid, $topics, $sortby, $forum_per_page);
889
      $output .= theme('feed_icon', url("taxonomy/term/$tid/0/feed"));
Dries's avatar
   
Dries committed
890
    }
891
    $output .= '</div>';
Dries's avatar
   
Dries committed
892
893
  }
  else {
894
    drupal_set_title(t('No forums defined'));
Dries's avatar
   
Dries committed
895
    $output = '';
Dries's avatar
   
Dries committed
896
897
  }

898
  return $output;
Dries's avatar
   
Dries committed
899
900
}

Dries's avatar
   
Dries committed
901
/**
Dries's avatar
   
Dries committed
902
903
 * Format the forum listing.
 *
Dries's avatar
   
Dries committed
904
 * @ingroup themeable
Dries's avatar
   
Dries committed
905
 */
Dries's avatar
   
Dries committed
906
function theme_forum_list($forums, $parents, $tid) {
Dries's avatar
   
Dries committed
907
908
  global $user;

Dries's avatar
   
Dries committed
909
910
  if ($forums) {

Dries's avatar
   
Dries committed
911
    $header = array(t('Forum'), t('Topics'), t('Posts'), t('Last post'));
Dries's avatar
   
Dries committed
912
913

    foreach ($forums as $forum) {
Dries's avatar
   
Dries committed
914
      if ($forum->container) {
915
916
        $description  = '<div style="margin-left: '. ($forum->depth * 30) ."px;\">\n";
        $description .= ' <div class="name">'. l($forum->name, "forum/$forum->tid") ."</div>\n";
Dries's avatar
   
Dries committed
917
918

        if ($forum->description) {
919
          $description .= ' <div class="description">'. check_plain($forum->description) ."</div>\n";
Dries's avatar
   
Dries committed
920
921
922
        }
        $description .= "</div>\n";

Dries's avatar
   
Dries committed
923
        $rows[] = array(array('data' => $description, 'class' => 'container', 'colspan' => '4'));
924
      }
Dries's avatar
   
Dries committed
925
      else {
926
927
928
        $new_topics = _forum_topics_unread($forum->tid, $user->uid);
        $forum->old_topics = $forum->num_topics - $new_topics;
        if (!$user->uid) {
Dries's avatar
   
Dries committed
929
930
          $new_topics = 0;
        }
Dries's avatar
   
Dries committed
931

932
933
        $description  = '<div style="margin-left: '. ($forum->depth * 30) ."px;\">\n";
        $description .= ' <div class="name">'. l($forum->name, "forum/$forum->tid") ."</div>\n";
Dries's avatar
   
Dries committed
934

Dries's avatar
   
Dries committed
935
        if ($forum->description) {
936
          $description .= ' <div class="description">'. check_plain($forum->description) ."</div>\n";
Dries's avatar
   
Dries committed
937
938
        }
        $description .= "</div>\n";
Dries's avatar
   
Dries committed
939

Dries's avatar
   
Dries committed
940
        $rows[] = array(
Dries's avatar
   
Dries committed
941
          array('data' => $description, 'class' => 'forum'),
942
          array('data' => $forum->num_topics . ($new_topics ? '<br />'. l(format_plural($new_topics, '1 new', '%count new'), "forum/$forum->tid", NULL, NULL, 'new') : ''), 'class' => 'topics'),
Dries's avatar
   
Dries committed
943
944
          array('data' => $forum->num_posts, 'class' => 'posts'),
          array('data' => _forum_format($forum->last_post), 'class' => 'last-reply'));
Dries's avatar
   
Dries committed
945
      }
Dries's avatar
   
Dries committed
946
    }
Dries's avatar
   
Dries committed
947
948
949

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

Dries's avatar
   
Dries committed
950
951
952
953
  }

}

Dries's avatar
   
Dries committed
954
/**
Dries's avatar
   
Dries committed
955
956
 * Format the topic listing.
 *
Dries's avatar
   
Dries committed
957
 * @ingroup themeable
Dries's avatar
   
Dries committed
958
 */
Dries's avatar
   
Dries committed
959
960
function theme_forum_topic_list($tid, $topics, $sortby, $forum_per_page) {
  global $forum_topic_list_header;
Dries's avatar
   
Dries committed
961
962

  if ($topics) {
Dries's avatar
   
Dries committed
963

Dries's avatar
   
Dries committed
964
965
    foreach ($topics as $topic) {
      // folder is new if topic is new or there are new comments since last visit
Dries's avatar
Dries committed
966
      if ($topic->tid != $tid) {
Dries's avatar
   
Dries committed
967
        $rows[] = array(
968
          array('data' => theme('forum_icon', $topic->new, $topic->num_comments, $topic->comment_mode, $topic->sticky), 'class' => 'icon'),
969
          array('data' => check_plain($topic->title), 'class' => 'title'),
Dries's avatar
   
Dries committed
970
          array('data' => l(t('This topic has been moved'), "forum/$topic->tid"), 'colspan' => '3')
Dries's avatar
   
Dries committed
971
        );
Dries's avatar
   
Dries committed
972
973
      }
      else {
Dries's avatar
   
Dries committed
974
        $rows[] = array(
975
          array('data' => theme('forum_icon', $topic->new, $topic->num_comments, $topic->comment_mode, $topic->sticky), 'class' => 'icon'),
Dries's avatar
   
Dries committed
976
          array('data' => l($topic->title, "node/$topic->nid"), 'class' => 'topic'),
977
          array('data' => $topic->num_comments . ($topic->new_replies ? '<br />'. l(format_plural($topic->new_replies, '1 new', '%count new'), "node/$topic->nid", NULL, NULL, 'new') : ''), 'class' => 'replies'),
Dries's avatar
   
Dries committed
978
979
          array('data' => _forum_format($topic), 'class' => 'created'),
          array('data' => _forum_format($topic->last_reply), 'class' => 'last-reply')
Dries's avatar
   
Dries committed
980
        );
Dries's avatar
   
Dries committed
981
982
      }
    }
Dries's avatar
   
Dries committed
983
  }
Dries's avatar
   
Dries committed
984

Dries's avatar
   
Dries committed
985
  $output .= theme('table', $forum_topic_list_header, $rows);
986
  $output .= theme('pager', NULL, $forum_per_page, 0, tablesort_pager());
Dries's avatar
   
Dries committed
987

Dries's avatar
   
Dries committed
988
989
990
  return $output;
}

991
992
993
994
995
996
/**
 * Format the icon for each individual topic.
 *
 * @ingroup themeable
 */
function theme_forum_icon($new_posts, $num_posts = 0, $comment_mode = 0, $sticky = 0) {
Dries's avatar
   
Dries committed
997

998
999
  if ($num_posts > variable_get('forum_hot_topic', 15)) {
    $icon = $new_posts ? 'hot-new' : 'hot';
Dries's avatar
   
Dries committed
1000
1001
  }
  else {
1002
    $icon = $new_posts ? 'new' : 'default';
Dries's avatar
   
Dries committed
1003
  }
Dries's avatar
   
Dries committed
1004

1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
  if ($comment_mode == COMMENT_NODE_READ_ONLY || $comment_mode == COMMENT_NODE_DISABLED) {
    $icon = 'closed';
  }

  if ($sticky == 1) {
    $icon = 'sticky';
  }

  $output = theme('image', "misc/forum-$icon.png");

Dries's avatar
   
Dries committed
1015
1016
1017
1018
  if ($new_posts) {
    $output = "<a name=\"new\">$output</a>";
  }

1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
  return $output;
}

/**
 * Format the next/previous forum topic navigation links.
 *
 * @ingroup themeable
 */
function theme_forum_topic_navigation($node) {
  $output = '';

  // get previous and next topic
  $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));
  $result = db_query(db_rewrite_sql($sql), $node->tid);

  while ($topic = db_fetch_object($result)) {
    if ($stop == 1) {
      $next = new StdClass();
      $next->nid = $topic->nid;
      $next->title = $topic->title;
      break;
    }
    if ($topic->nid == $node->nid) {
      $stop = 1;
    }
    else {
      $prev = new StdClass();
      $prev->nid = $topic->nid;
      $prev->title = $topic->title;
    }
  }

  if ($prev || $next) {
    $output .= '<div class="forum-topic-navigation">';

    if ($prev) {
1055
      $output .= l(t('‹ ') . $prev->title, 'node/'. $prev->nid, array('class' => 'topic-previous', 'title' => t('Go to previous forum topic')));
1056
1057
    }
    if ($next) {
1058
      $output .= l($next->title . t(' ›'), 'node/'. $next->nid, array('class' => 'topic-next', 'title' => t('Go to next forum topic')));
1059
1060
1061
1062
1063
    }

    $output .= '</div>';
  }

Dries's avatar
   
Dries committed
1064
  return $output;
Dries's avatar
   
Dries committed
1065
1066
1067
1068
}

function _forum_user_last_visit($nid) {
  global $user;
1069
1070
1071
  static $history = array();

  if (empty($history)) {
Dries's avatar
   
Dries committed
1072
    $result = db_query('SELECT nid, timestamp FROM {history} WHERE uid = %d', $user->uid);
Dries's avatar
   
Dries committed
1073
    while ($t = db_fetch_object($result)) {
1074
      $history[$t->nid] = $t->timestamp > NODE_NEW_LIMIT ? $t->timestamp : NODE_NEW_LIMIT;
Dries's avatar
   
Dries committed
1075
1076
    }
  }
1077
  return $history[$nid] ? $history[$nid] : NODE_NEW_LIMIT;
Dries's avatar
   
Dries committed
1078
1079
1080
1081
1082
}

function _forum_get_topic_order($sortby) {
  switch ($sortby) {
    case 1:
Dries's avatar
   
Dries committed
1083
      return array('field' => 'l.last_comment_timestamp', 'sort' => 'desc');
Dries's avatar
   
Dries committed
1084
1085
      break;
    case 2:
Dries's avatar
   
Dries committed
1086
      return array('field' => 'l.last_comment_timestamp', 'sort' => 'asc');
Dries's avatar
   
Dries committed
1087
1088
      break;
    case 3:
Dries's avatar
   
Dries committed
1089
      return array('field' => 'l.comment_count', 'sort' => 'desc');
Dries's avatar
   
Dries committed
1090
1091
      break;
    case 4:
Dries's avatar
   
Dries committed
1092
      return array('field' => 'l.comment_count', 'sort' => 'asc');
Dries's avatar
   
Dries committed
1093
1094
1095
1096
      break;
  }
}

Dries's avatar
   
Dries committed
1097
1098
1099
1100
1101
function _forum_get_topic_order_sql($sortby) {
  $order = _forum_get_topic_order($sortby);
  return $order['field'] .' '. $order['sort'];
}

1102