form.inc 29.4 KB
Newer Older
1
<?php
2
3
// $Id$

4
5
6
7
8
9
10
/**
 * @defgroup form Form generation
 * @{
 * Functions to enable output of HTML forms and form elements.
 *
 * Drupal uses these functions to achieve consistency in its form presentation,
 * while at the same time simplifying code and reducing the amount of HTML that
11
12
13
14
15
 * must be explicitly generated by modules. See the
 * <a href="http://drupaldocs.org/api/head/file/contributions/docs/developer/topics/forms_api_reference.html">reference</a>
 * and the
 * <a href="http://drupaldocs.org/api/file/contributions/docs/developer/topics/forms_api.html">quickstart</a>
 * guide for more.
16
17
18
19
20
21
 */

/**
 * Check if the key is a property.
 */
function element_property($key) {
Dries's avatar
Dries committed
22
  return $key{0} == '#';
23
24
25
}

function element_properties($element) {
Steven Wittens's avatar
Steven Wittens committed
26
  return array_filter(array_keys((array) $element), 'element_property');
27
28
29
30
31
32
}

/**
 * Check if the key is a child.
 */
function element_child($key) {
Dries's avatar
Dries committed
33
  return $key{0} != '#';
34
35
36
}

function element_children($element) {
Steven Wittens's avatar
Steven Wittens committed
37
  return array_filter(array_keys((array) $element), 'element_child');
38
39
40
41
42
43
}

/**
 * Processes a form array, and produces the HTML output of a form.
 * If there is input in the $_POST['edit'] variable, this function
 * will attempt to validate it, using <code>drupal_validate_form</code>,
44
 * and then submit the form using <code>drupal_submit_form</code>.
45
46
47
48
49
50
51
52
53
54
 *
 * @param $form_id
 *   A unique string identifying the form. Allows each form to be themed.
 * @param $form
 *   An associative array containing the structure of the form.
 * @param $callback
 *   An optional callback that will be used in addition to the form_id.
 *
 */
function drupal_get_form($form_id, &$form, $callback = NULL) {
Dries's avatar
Dries committed
55
  global $form_values, $form_submitted;
56
  $form_values = array();
Dries's avatar
Dries committed
57
  $form_submitted = FALSE;
Steven Wittens's avatar
Steven Wittens committed
58

59
60
  $form['#type'] = 'form';
  if (isset($form['#token'])) {
61
62
63
64
65
    // Make sure that a private key is set:
    if (!variable_get('drupal_private_key', '')) {
      variable_set('drupal_private_key', mt_rand());
    }

66
    $form['form_token'] = array('#type' => 'hidden', '#value' => md5($_SERVER['REMOTE_ADDR'] . $form['#token'] . variable_get('drupal_private_key', '')));
67
  }
Steven Wittens's avatar
Steven Wittens committed
68
69
  $form['form_id'] = array('#type' => 'hidden', '#default_value' => $form_id);

70
71
  $form = array_merge(_element_info('form'), $form);

Dries's avatar
Dries committed
72
73
  if (!isset($form['#validate'])) {
    if (function_exists($form_id .'_validate')) {
74
      $form['#validate'] = array($form_id .'_validate' => array());
Dries's avatar
Dries committed
75
76
    }
    elseif (function_exists($callback .'_validate')) {
77
      $form['#validate'] = array($callback .'_validate' => array());
Dries's avatar
Dries committed
78
79
80
    }
  }

81
82
  if (!isset($form['#submit'])) {
    if (function_exists($form_id .'_submit')) {
83
84
85
      // we set submit here so that it can be altered but use reference for
      // $form_values because it will change later
      $form['#submit'] = array($form_id .'_submit' => array($form_id, &$form_values));
Dries's avatar
Dries committed
86
    }
87
    elseif (function_exists($callback .'_submit')) {
88
      $form['#submit'] = array($callback .'_submit' => array($form_id, &$form_values));
Dries's avatar
Dries committed
89
90
91
    }
  }

92
93
  foreach (module_implements('form_alter') as $module) {
    $function = $module .'_form_alter';
94
    $function($form_id, $form);
95
96
  }

97
  $form = _form_builder($form_id, $form);
Steven Wittens's avatar
Steven Wittens committed
98

99
  if (!empty($_POST['edit']) && (($_POST['edit']['form_id'] == $form_id) || ($_POST['edit']['form_id'] == $callback))) {
100
    drupal_validate_form($form_id, $form, $callback);
Dries's avatar
Dries committed
101
    if ($form_submitted && !form_get_errors()) {
102
      drupal_submit_form($form_id, $form, $callback);
103
    }
104
105
106
  }

  if (function_exists('theme_' . $form_id)) {
107
    $form['#theme'] = $form_id;
108
109
  }
  elseif (function_exists('theme_' . $callback)) {
110
    $form['#theme'] = $callback;
111
112
113
114
115
116
117
  }
  return form_render($form);
}

function drupal_validate_form($form_id, &$form, $callback = NULL) {
  global $form_values;

118
119
  if (isset($form['#token'])) {
    if ($form_values['form_token'] != md5($_SERVER['REMOTE_ADDR'] . $form['#token'] . variable_get('drupal_private_key', ''))) {
120
121
122
123
124
      // setting this error will cause the form to fail validation
      form_set_error('form_token', t('Validation error, please try again.  If this error persists, please contact the site administrator.'));
    }
  }

125
  _form_validate($form, $form_id);
126
127
}

128
function drupal_submit_form($form_id, $form, $callback = NULL) {
129
130
  global $form_values;

131
  if (isset($form['#submit'])) {
132
133
134
    foreach ($form['#submit'] as $function => $args) {
      if (function_exists($function)) {
        call_user_func_array($function, $args);
Dries's avatar
Dries committed
135
136
      }
    }
137
138
139
  }
}

140
function _form_validate($elements, $form_id = NULL) {
141
  /* Validate the current input */
142
  if (!$elements['#validated'] && ($elements['#input'] || isset($form_id))) {
143
144
145
146
    // An empty checkbox returns 0, an empty textfield returns '' so we use empty().
    // Unfortunately, empty('0') returns TRUE so we need a special check for the '0' string.
    if ($elements['#required'] && empty($elements['#value']) && $elements['#value'] !== '0') {
      form_error($elements, t('%name field is required', array('%name' => $elements['#title'])));
147
    }
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165

    // Add legal choice check if element has #options.
    if (isset($elements['#options']) && isset($elements['#value'])) {
      $message = t('Illegal choice in %title.', array('%title' => theme('placeholder', $elements['#title'])));
      if (is_array($elements['#value'])) {
        $value = $elements['#type'] == 'checkboxes' ? array_keys(array_filter($elements['#value'])) : $elements['#value'];
        foreach ($value as $v) {
          if (!isset($elements['#options'][$v])) {
            form_error($elements, $message);
          }
        }
      }
      elseif (!isset($elements['#options'][$elements['#value']])) {
        form_error($elements, $message);
      }
    }

    // User-applied checks.
Dries's avatar
Dries committed
166
    if (isset($elements['#validate'])) {
167
168
169
170
171
      foreach ($elements['#validate'] as $function => $args) {
        $args = array_merge(array($elements), $args);
        // for the full form we hand over a copy of $form_values
        if (isset($form_id)) {
          $args = array_merge(array($form_id, $GLOBALS['form_values']), $args);
172
        }
173
174
        if (function_exists($function))  {
          call_user_func_array($function, $args);
175
176
177
        }
      }
    }
178
    $elements['#validated'] = TRUE;
179
  }
180
181
182
183
184
185
186

  // Recurse through all children.
  foreach (element_children($elements) as $key) {
    if (isset($elements[$key]) && $elements[$key]) {
      _form_validate($elements[$key]);
    }
  }
187
188
}

189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
/**
 * File an error against a form element. If the name of the element is
 * edit[foo][bar] then you may pass either foo or foo][bar as $name
 * foo will set an error for all its children.
 */
function form_set_error($name = NULL, $message = NULL) {
  static $form = array();
  if (isset($name) && !isset($form[$name])) {
    $form[$name] = $message;
    drupal_set_message($message, 'error');
  }
  return $form;
}

/**
 * Return an associative array of all errors.
 */
function form_get_errors() {
  $form = form_set_error();
  if (!empty($form)) {
    return $form;
  }
}

/**
 * Return the error message filed against the form with the specified name.
 */
function form_get_error($element) {
  $form = form_set_error();
  $key = $element['#parents'][0];
  if (isset($form[$key])) {
    return $form[$key];
  }
  $key = implode('][', $element['#parents']);
  if (isset($form[$key])) {
    return $form[$key];
  }
}

228
229
230
231
/**
 * Flag an element as having an error.
 */
function form_error(&$element, $message) {
232
  $element['#error'] = TRUE;
233
  form_set_error(implode('][', $element['#parents']), $message);
234
235
236
237
238
239
240
}

/**
 * Adds some required properties to each form element, which are used internally in the form api.
 * This function also automatically assigns the value property from the $edit array, provided the
 * element doesn't already have an assigned value.
 */
241
function _form_builder($form_id, $form) {
242
  global $form_values;
Dries's avatar
Dries committed
243
  global $form_submitted;
244
  /* Use element defaults */
245
  if ((!empty($form['#type'])) && ($info = _element_info($form['#type']))) {
246
247
248
    $form += $info;
  }

249
  if ($form['#input']) {
250
251
252
253
254
255
    if (!isset($form['#name'])) {
      $form['#name'] = 'edit[' . implode('][', $form['#parents']) . ']';
    }
    if (!isset($form['#id'])) {
      $form['#id'] =  'edit-' . implode('-', $form['#parents']);
    }
256

257
    $posted = (isset($_POST['edit']) && ($_POST['edit']['form_id'] == $form_id));
258
259
    $edit = $posted ? $_POST['edit'] : array();
    $ref =& $form_values;
260
    foreach ($form['#parents'] as $parent) {
261
262
263
      $edit = isset($edit[$parent]) ? $edit[$parent] : NULL;
      $ref =& $ref[$parent];
    }
264
    if (!isset($form['#value'])) {
265
266
267
268
269
270
271
272
273
      if ($posted) {
        if (isset($edit)) {
          $form['#value'] = $edit; // normal element
        }
        elseif (isset($form['#return_value'])) {
          $form['#value'] = 0; // checkbox unchecked
        }
      }
      if (!isset($form['#value'])) {
274
275
276
277
278
279
280
        $function = $form['#type'] . '_value';
        if (function_exists($function)) {
          $function($form);
        }
        else {
          $form['#value'] = $form['#default_value'];
        }
281
      }
282
    }
Dries's avatar
Dries committed
283
    if (isset($form['#form_submitted'])) {
284
      if ($_POST[$form['#name']] == $form['#value']) {
Dries's avatar
Dries committed
285
        $form_submitted = $form_submitted || $form['#form_submitted'];
286
287
288
289
290
      }
    }
  }

  // Allow for elements to expand to multiple elements. Radios, checkboxes and files for instance.
291
  if (isset($form['#process']) && !$form['#processed']) {
292
293
    foreach ($form['#process'] as $process => $args) {
      if (function_exists($process)) {
294
295
        $args = array_merge(array($form), $args);
        $form = call_user_func_array($process, $args);
296
297
      }
    }
298
    $form['#processed'] = TRUE;
299
300
  }

301
302
303
304
305
306
307
  // Set the $form_values key that gets passed to validate and submit.
  // We call this after #process gets called so that #process has a
  // chance to update #value if desired.
  if ($form['#input']) {
    $ref = $form['#value'];
  }

308
309
310
  // Recurse through all child elements.
  $count  = 0;
  foreach (element_children($form) as $key) {
Steven Wittens's avatar
Steven Wittens committed
311
    // don't squash an existing tree value
312
313
314
    if (!isset($form[$key]['#tree'])) {
      $form[$key]['#tree'] = $form['#tree'];
    }
Steven Wittens's avatar
Steven Wittens committed
315

316
317
    // don't squash existing parents value
    if (!isset($form[$key]['#parents'])) {
318
319
      // Check to see if a tree of child elements is present. If so, continue down the tree if required.
      $form[$key]['#parents'] = $form[$key]['#tree'] && $form['#tree'] ? array_merge($form['#parents'], array($key)) : array($key);
Steven Wittens's avatar
Steven Wittens committed
320
321
    }

322
    # Assign a decimal placeholder weight, to preserve original array order
323
324
325
    if (!isset($form[$key]['#weight'])) {
      $form[$key]['#weight'] = $count/1000;
    }
326
    $form[$key] = _form_builder($form_id, $form[$key]);
327
328
329
    $count++;
  }

330
331
332
  if (function_exists($form['#after_build']) && !isset($form['#after_build_done'])) {
    $form = call_user_func($form['#after_build'], $form, $form_values);
    $form['#after_build_done'] = TRUE;
Steven Wittens's avatar
Steven Wittens committed
333
  }
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349

  return $form;
}

/**
 * Renders a HTML form given an form tree.  Recursively iterates over each of
 * each of the form elements generating HTML code.  This function is usually
 * called from within a theme.  To render a form from within a module, use
 * <code>drupal_get_form()</code>.
 *
 * @param $elements
 *   The form tree describing the form.
 * @return
 *   The rendered HTML form.
 */
function form_render(&$elements) {
350
351
  if (!isset($elements)) {
    return NULL;
352
  }
353
354
  $content = '';
  uasort($elements, "_form_sort");
355

356
  if (!$elements['#children']) {
357
    /* render all the children using a theme function */
358
359
360
361
362
363
    if ($elements['#theme'] && !$elements['#theme_used']) {
      $elements['#theme_used'] = TRUE;
      $previous_type = $elements['#type'];
      $elements['#type'] = 'markup';
      $content = theme($elements['#theme'], $elements);
      $elements['#type'] = $previous_type;
364
365
366
367
368
369
370
371
372
    }
    /* render each of the children using form_render and concatenate them */
    if (!$content) {
      foreach (element_children($elements) as $key) {
        $content .= form_render($elements[$key]);
      }
    }
  }
  if ($content) {
373
    $elements['#children'] = $content;
374
375
376
  }

  /* Call the form element renderer */
377
378
379
  if (!$elements['#printed']) {
    $content = theme(($elements['#type']) ? $elements['#type']: 'markup', $elements);
    $elements['#printed'] = TRUE;
380
381
  }

382
383
384
  if ($content) {
    return $elements['#prefix'] . $content . $elements['#suffix'];
  }
385
386
387
388
389
390
}

/**
 * Function used by uasort in form render to sort form via weight.
 */
function _form_sort($a, $b) {
391
392
393
  $a_weight = (is_array($a) && isset($a['#weight'])) ? $a['#weight'] : 0;
  $b_weight = (is_array($b) && isset($b['#weight'])) ? $b['#weight'] : 0;
  if ($a_weight == $b_weight) {
Dries's avatar
Dries committed
394
395
    return 0;
  }
396
  return ($a_weight < $b_weight) ? -1 : 1;
397
398
399
400
401
402
403
}

/**
 * Retrieve the default properties for the defined element type.
 */
function _element_info($type, $refresh = null) {
  static $cache;
Steven Wittens's avatar
Steven Wittens committed
404
405

  $parents = array();
406
  $basic_defaults = array(
407
408
409
    '#description' => NULL,
    '#attributes' => array(),
    '#required' => FALSE,
Steven Wittens's avatar
Steven Wittens committed
410
411
    '#tree' => FALSE,
    '#parents' => $parents
412
  );
413
  if ($refresh || !isset($cache)) {
414
415
416
    $cache = array();
    foreach (module_implements('elements') as $module) {
      $elements = module_invoke($module, 'elements');
417
      if (isset($elements) && is_array($elements)) {
418
        $cache = array_merge_recursive($cache, $elements);
419
420
421
422
      }
    }
    if (sizeof($cache)) {
      foreach ($cache as $element_type => $info) {
423
        $cache[$element_type] = array_merge_recursive($basic_defaults, $info);
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
      }
    }
  }

  return $cache[$type];
}

/**
 * Format a dropdown menu or scrolling selection box.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : title, value, options, description, extra, multiple, required
 * @return
 *   A themed HTML string representing the form element.
 *
 * It is possible to group options together; to do this, change the format of
 * $options to an associative array in which the keys are group labels, and the
 * values are associative arrays in the normal $options format.
 */
function theme_select($element) {
  $select = '';
446
  $size = $element['#size'] ? ' size="' . $element['#size'] . '"' : '';
447
  foreach ($element['#options'] as $key => $choice) {
448
449
450
    if (is_array($choice)) {
      $select .= '<optgroup label="'. $key .'">';
      foreach ($choice as $key => $choice) {
451
        $select .= '<option value="'. $key .'"'. (is_array($element['#value']) ? (in_array($key, $element['#value']) ? ' selected="selected"' : '') : ($element['#value'] == $key ? ' selected="selected"' : '')) .'>'. check_plain($choice) .'</option>';
452
453
454
455
      }
      $select .= '</optgroup>';
    }
    else {
456
      $select .= '<option value="'. $key .'"'. (is_array($element['#value']) ? (in_array($key, $element['#value']) ? ' selected="selected"' : '') : ($element['#value'] == $key ? ' selected="selected"' : '')) .'>'. check_plain($choice) .'</option>';
457
458
    }
  }
459
  return theme('form_element', $element['#title'], '<select name="'. $element['#name'] .''. ($element['#multiple'] ? '[]' : '') .'"'. ($element['#multiple'] ? ' multiple="multiple" ' : '') . drupal_attributes($element['#attributes']) .' id="' . $element['#id'] .'" '. $size .'>'. $select .'</select>', $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
460
461
462
463
464
465
466
467
468
469
470
471
}

/**
 * Format a group of form items.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : attributes, title, description, children, collapsible, collapsed
 * @return
 *   A themed HTML string representing the form item group.
 */
function theme_fieldset($element) {
472
  if ($element['#collapsible']) {
473
474
    drupal_add_js('misc/collapse.js');

475
476
477
    $element['#attributes']['class'] .= ' collapsible';
    if ($element['#collapsed']) {
     $element['#attributes']['class'] .= ' collapsed';
478
479
480
    }
  }

481
  return '<fieldset' . drupal_attributes($element['#attributes']) .'>' . ($element['#title'] ? '<legend>'. $element['#title'] .'</legend>' : '') . $element['#children'] . $element['#value'] . ($element['#description'] ? '<div class="description">'. $element['#description'] .'</div>' : '') . "</fieldset>\n";
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496

}


/**
 * Format a radio button.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : required, return_value, value, attributes, title, description
 * @return
 *   A themed HTML string representing the form item group.
 */
function theme_radio($element) {
  $output = '<input type="radio" ';
497
  $output .= 'class="'. _form_get_class('form-radio', $element['#required'], form_get_error($element)) .'" ';
498
499
500
501
502
503
  $output .= 'name="' . $element['#name'] .'" ';
  $output .= 'value="'. $element['#return_value'] .'" ';
  $output .= ($element['#value'] == $element['#return_value']) ? ' checked="checked" ' : ' ';
  $output .= drupal_attributes($element['#attributes']) .' />';
  if (!is_null($element['#title'])) {
    $output = '<label class="option">'. $output .' '. $element['#title'] .'</label>';
504
  }
505
  return theme('form_element', NULL, $output, $element['#description'], $element['#name'], $element['#required'], form_get_error($element));
506
507
508
509
510
511
512
513
514
515
516
517
}

/**
 * Format a set of radio buttons.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : title, value, options, description, required and attributes.
 * @return
 *   A themed HTML string representing the radio button set.
 */
function theme_radios($element) {
518
  if ($element['#title'] || $element['#description']) {
519
    return theme('form_element', $element['#title'], $element['#children'], $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
520
521
  }
  else {
522
    return $element['#children'];
523
524
525
526
  }
}

/**
527
 * Format a date selection element.
528
529
530
531
532
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : title, value, options, description, required and attributes.
 * @return
533
 *   A themed HTML string representing the date selection boxes.
534
535
 */
function theme_date($element) {
536
  $output = '<div class="container-inline">' . $element['#children'] . '</div>';
537
  return theme('form_element', $element['#title'], $output, $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
538
539
540
}

/**
541
 * Roll out a single date element.
542
543
544
 */
function expand_date($element) {
  // Default to current date
545
546
  if (!isset($element['#value'])) {
    $element['#value'] = array('day' => format_date(time(), 'custom', 'j'),
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
                            'month' => format_date(time(), 'custom', 'n'),
                            'year' => format_date(time(), 'custom', 'Y'));
  }

  // Determine the order of day, month, year in the site's chosen date format.
  $format = variable_get('date_format_short', 'm/d/Y');
  $sort = array();
  $sort['day'] = max(strpos($format, 'd'), strpos($format, 'j'));
  $sort['month'] = max(strpos($format, 'm'), strpos($format, 'M'));
  $sort['year'] = strpos($format, 'Y');
  asort($sort);
  $order = array_keys($sort);

  // Output multi-selector for date
  foreach ($order as $type) {
    switch ($type) {
      case 'day':
        $options = drupal_map_assoc(range(1, 31));
        break;
      case 'month':
567
        $options = drupal_map_assoc(range(1, 12), 'map_month');
568
569
570
571
572
        break;
      case 'year':
        $options = drupal_map_assoc(range(1900, 2050));
        break;
    }
573
574
575
576
577
578
579
580
581
    $parents = $element['#parents'];
    $parents[] = $type;
    $element[$type] = array(
      '#type' => 'select',
      '#value' => $element['#value'][$type],
      '#attributes' => $element['#attributes'],
      '#parents' => $parents,
      '#options' => $options,
    );
582
583
584
585
586
  }

  return $element;
}

587
588
589
590
591
592
/**
 * Helper function for usage with drupal_map_assoc to display month names.
 */
function map_month($month) {
  return format_date(gmmktime(0, 0, 0, $month, 2, 1970), 'custom', 'M', 0);
}
593

594
595
596
597
598
599
600
601
602
603
604
/**
 * Helper function to load value from default value for checkboxes
 */
function checkboxes_value(&$form) {
  $value = array();
  foreach ((array)$form['#default_value'] as $key) {
    $value[$key] = 1;
  }
  $form['#value'] = $value;
}

605
/**
606
 * Roll out a single radios element
607
 * to a list of radios, using the options array as index.
608
609
 */
function expand_radios($element) {
610
611
  if (count($element['#options']) > 0) {
    foreach ($element['#options'] as $key => $choice) {
612
      if (!$element[$key]) {
613
        $element[$key] = array('#type' => 'radio', '#title' => $choice, '#return_value' => $key, '#default_value' => $element['#default_value'], '#attributes' => $element['#attributes'], '#parents' => $element['#parents'], '#spawned' => TRUE);
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
      }
    }
  }
  return $element;
}


/**
 * Format a form item.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used :  title, value, description, required, error
 * @return
 *   A themed HTML string representing the form item.
 */
function theme_item($element) {
631
  return theme('form_element', $element['#title'], $element['#value'] . $element['#children'], $element['#description'], $element['#id'], $element['#required'], $element['#error']);
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
}


/**
 * Format a checkbox.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used :  title, value, return_value, description, required
 * @return
 *   A themed HTML string representing the checkbox.
 */
function theme_checkbox($element) {
  $checkbox = '<input ';
  $checkbox .= 'type="checkbox" ';
647
  $checkbox .= 'class="'. _form_get_class('form-checkbox', $element['#required'], form_get_error($element)) . '" ';
648
649
650
651
652
653
654
655
  $checkbox .= 'name="'. $element['#name'] .'" ';
  $checkbox .= 'id="'. $element['#id'].'" ' ;
  $checkbox .= 'value="'. $element['#return_value'] .'" ';
  $checkbox .= ($element['#value'] == $element['#return_value']) ? ' checked="checked" ' : ' ';
  $checkbox .= drupal_attributes($element['#attributes']) . ' />';

  if (!is_null($element['#title'])) {
    $checkbox = '<label class="option">'. $checkbox .' '. $element['#title'] .'</label>';
656
657
  }

658
  return theme('form_element', NULL, $checkbox, $element['#description'], $element['#name'], $element['#required'], form_get_error($element));
659
660
661
662
663
664
665
666
667
668
669
}

/**
 * Format a set of checkboxes.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 * @return
 *   A themed HTML string representing the checkbox set.
 */
function theme_checkboxes($element) {
670
  if ($element['#title'] || $element['#description']) {
671
    return theme('form_element', $element['#title'], $element['#children'], $element['#description'], 'edit-'. $element['#name'], $element['#required'], form_get_error($element));
672
673
  }
  else {
674
    return $element['#children'];
675
676
677
678
  }
}

function expand_checkboxes($element) {
679
  $value = is_array($element['#value']) ? $element['#value'] : array();
Steven Wittens's avatar
Steven Wittens committed
680
  $element['#tree'] = TRUE;
681
682
683
  if (count($element['#options']) > 0) {
    if (!isset($element['#default_value']) || $element['#default_value'] == 0) {
      $element['#default_value'] = array();
684
    }
685
    foreach ($element['#options'] as $key => $choice) {
686
      if (!isset($element[$key])) {
687
        $element[$key] = array('#type' => 'checkbox', '#processed' => TRUE, '#title' => $choice, '#default_value' => isset($value[$key]), '#attributes' => $element['#attributes']);
688
689
690
691
692
693
694
695
696
697
698
699
      }
    }
  }
  return $element;
}


function theme_submit($element) {
  return theme('button', $element);
}

function theme_button($element) {
700
  return '<input type="submit" class="form-'. $element['#button_type'] .'" name="'. $element['#name'] .'" value="'. check_plain($element['#value']) .'" '. drupal_attributes($element['#attributes']) ." />\n";
701
702
703
704
705
706
707
708
709
710
711
712
}

/**
 * Format a hidden form field.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used :  value, edit
 * @return
 *   A themed HTML string representing the hidden form field.
 */
function theme_hidden($element) {
713
  return '<input type="hidden" name="'. $element['#name'] . '" value="'. check_plain($element['#value']) ."\" " . drupal_attributes($element['#attributes']) ." />\n";
714
715
716
717
718
719
720
721
722
723
724
725
}

/**
 * Format a textfield.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used :  title, value, description, size, maxlength, required, attributes autocomplete_path
 * @return
 *   A themed HTML string representing the textfield.
 */
function theme_textfield($element) {
726
727
  $size = $element['#size'] ? ' size="' . $element['#size'] . '"' : '';
  if ($element['#autocomplete_path']) {
728
729
    drupal_add_js('misc/autocomplete.js');
    $class = ' form-autocomplete';
730
    $extra =  '<input class="autocomplete" type="hidden" id="'. $element['#id'] .'-autocomplete" value="'. check_url(url($element['#autocomplete_path'], NULL, NULL, TRUE)) .'" disabled="disabled" />';
731
732
  }

733
734
  $output = '<input type="text" maxlength="'. $element['#maxlength'] .'" class="'. _form_get_class("form-text$class", $element['#required'], form_get_error($element)) .'" name="'. $element['#name'] .'" id="'. $element['#id'] .'" '. $size .' value="'. check_plain($element['#value']) .'"'. drupal_attributes($element['#attributes']) .' />';
  return theme('form_element', $element['#title'], $output, $element['#description'], $element['#id'], $element['#required'], form_get_error($element)). $extra;
735
736
737
738
739
740
741
742
743
744
745
746
747
}

/**
 * Format a form.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : action, method, attributes, children
 * @return
 *   A themed HTML string representing the form.
 */
function theme_form($element) {
  // Anonymous div to satisfy XHTML compliancy.
748
749
  $action = $element['#action'] ? 'action="' . check_url($element['#action']) . '" ' : '';
  return '<form '. $action . ' method="'. $element['#method'] .'" '. drupal_attributes($element['#attributes']) .">\n<div>". $element['#children'] ."\n</div></form>\n";
750
751
752
753
754
755
756
757
758
759
760
761
762
}


/**
 * Format a textarea.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : title, value, description, rows, cols, required, attributes
 * @return
 *   A themed HTML string representing the textarea.
 */
function theme_textarea($element) {
763
764
765
766
767
768
  $class = 'textarea';
  if ($element['#resizable'] !== false) {
    drupal_add_js('misc/textarea.js');
    $class .= ' resizable';
  }

769
  $cols = $element['#cols'] ? ' cols="'. $element['#cols'] .'"' : '';
770

771
  return theme('form_element', $element['#title'], '<textarea'. $cols .' rows="'. $element['#rows'] .'" name="'. $element['#name'] .'" id="' . $element['#id'] .'" class="'. _form_get_class($class, $element['#required'], form_get_error($element)) .'"'. drupal_attributes($element['#attributes']) .'>'. check_plain($element['#value']) .'</textarea>', $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
}

/**
 * Format HTML markup for use in forms.
 *
 * This is used in more advanced forms, such as theme selection and filter format.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : prefix, value, children and suffix.
 * @return
 *   A themed HTML string representing the HTML markup.
 */

function theme_markup($element) {
787
  return $element['#value'] . $element['#children'];
788
789
790
791
792
793
794
795
796
797
798
799
800
801
}



/**
* Format a password field.
*
* @param $element
*   An associative array containing the properties of the element.
*   Properties used :  title, value, description, size, maxlength, required, attributes
* @return
*   A themed HTML string representing the form.
*/
function theme_password($element) {
802
  $size = $element['#size'] ? ' size="'. $element['#size'] .'" ' : '';
803

804
  $output = '<input type="password" maxlength="'. $element['#maxlength'] .'" class="'. _form_get_class("form-text $class", $element['#required'], form_get_error($element)) .'" name="'. $element['#name'] .'" id="'. $element['#id'] .'" '. $size . drupal_attributes($element['#attributes']) .' />';
805

806
  return theme('form_element', $element['#title'], $output, $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
807
808
809
810
811
812
813
814
815
816
817
818
}

/**
 * Format a weight selection menu.
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used :  title, delta, description
 * @return
 *   A themed HTML string representing the form.
 */
function theme_weight($element) {
819
  for ($n = (-1 * $element['#delta']); $n <= $element['#delta']; $n++) {
820
821
    $weights[$n] = $n;
  }
822
823
  $element['#options'] = $weights;
  $element['#type'] = 'select';
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847

  return form_render($element);
}

/**
 * Format a file upload field.
 *
 * @param $title
 *   The label for the file upload field.
 * @param $name
 *   The internal name used to refer to the field.
 * @param $size
 *   A measure of the visible size of the field (passed directly to HTML).
 * @param $description
 *   Explanatory text to display after the form item.
 * @param $required
 *   Whether the user must upload a file to the field.
 * @return
 *   A themed HTML string representing the field.
 *
 * For assistance with handling the uploaded file correctly, see the API
 * provided by file.inc.
 */
function theme_file($element) {
848
  return theme('form_element', $element['#title'], '<input type="file" class="'. _form_get_class('form-file', $element['#required'], form_get_error($element)) .'" name="'. $element['#name'] .'" id="'. form_clean_id($element['#id']) .'" size="'. $element['#size'] ."\" />\n", $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
}
function _form_get_class($name, $required, $error) {
  return $name. ($required ? ' required' : '') . ($error ? ' error' : '');
}

/**
 * Remove invalid characters from an HTML ID attribute string
 *
 * @param $id
 *   The ID to clean
 * @return
 *   The cleaned ID
 */
function form_clean_id($id = NULL) {
  $id = str_replace('][', '-', $id);
  return $id;
}

/**
 * @} End of "defgroup form".
 */