form.inc 27.7 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) {
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) {
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 Buytaert's avatar
Dries Buytaert committed
55
  global $form_values, $form_submitted;
56
  $form_values = array();
Dries Buytaert's avatar
Dries Buytaert 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 Buytaert's avatar
Dries Buytaert committed
72
73
  if (!isset($form['#validate'])) {
    if (function_exists($form_id .'_validate')) {
74
      $form['#validate'] = array($form_id .'_validate' => array());
Dries Buytaert's avatar
Dries Buytaert committed
75
76
    }
    elseif (function_exists($callback .'_validate')) {
77
      $form['#validate'] = array($callback .'_validate' => array());
Dries Buytaert's avatar
Dries Buytaert 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 Buytaert's avatar
Dries Buytaert committed
86
    }
87
    elseif (function_exists($callback .'_submit')) {
88
      $form['#submit'] = array($callback .'_submit' => array($form_id, &$form_values));
Dries Buytaert's avatar
Dries Buytaert 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, $callback);
Dries Buytaert's avatar
Dries Buytaert committed
101
    if ($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 Buytaert's avatar
Dries Buytaert 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' => $elements['#title'])));
147
    }
Dries Buytaert's avatar
Dries Buytaert committed
148
    if (isset($elements['#validate'])) {
149
150
151
152
153
      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']), $args);
154
        }
155
156
        if (function_exists($function))  {
          call_user_func_array($function, $args);
157
158
159
        }
      }
    }
160
    $elements['#validated'] = TRUE;
161
  }
162
163
164
165
166
167
168

  // Recurse through all children.
  foreach (element_children($elements) as $key) {
    if (isset($elements[$key]) && $elements[$key]) {
      _form_validate($elements[$key]);
    }
  }
169
170
}

171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/**
 * 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];
  }
}

210
211
212
213
/**
 * Flag an element as having an error.
 */
function form_error(&$element, $message) {
214
  $element['#error'] = TRUE;
215
  form_set_error(implode('][', $element['#parents']), $message);
216
217
218
219
220
221
222
}

/**
 * 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 $edit array, provided the
 * element doesn't already have an assigned value.
 */
223
function _form_builder($form_id, $form) {
224
  global $form_values;
Dries Buytaert's avatar
Dries Buytaert committed
225
  global $form_submitted;
226
  /* Use element defaults */
227
  if ((!empty($form['#type'])) && ($info = _element_info($form['#type']))) {
228
229
230
    $form += $info;
  }

231
  if ($form['#input']) {
232
233
234
235
236
237
    if (!isset($form['#name'])) {
      $form['#name'] = 'edit[' . implode('][', $form['#parents']) . ']';
    }
    if (!isset($form['#id'])) {
      $form['#id'] =  'edit-' . implode('-', $form['#parents']);
    }
238

239
    $posted = (isset($_POST['edit']) && ($_POST['edit']['form_id'] == $form_id));
240
241
    $edit = $posted ? $_POST['edit'] : array();
    $ref =& $form_values;
242
    foreach ($form['#parents'] as $parent) {
243
244
245
      $edit = isset($edit[$parent]) ? $edit[$parent] : NULL;
      $ref =& $ref[$parent];
    }
246
    if (!isset($form['#value'])) {
247
248
249
250
251
252
253
254
255
256
257
      if ($posted) {
        if (isset($edit)) {
          $form['#value'] = $edit; // normal element
        }
        elseif (isset($form['#return_value'])) {
          $form['#value'] = 0; // checkbox unchecked
        }
      }
      if (!isset($form['#value'])) {
        $form['#value'] = $form['#default_value'];
      }
258
    }
Dries Buytaert's avatar
Dries Buytaert committed
259
    if (isset($form['#form_submitted'])) {
260
      if ($_POST[$form['#name']] == $form['#value']) {
Dries Buytaert's avatar
Dries Buytaert committed
261
        $form_submitted = $form_submitted || $form['#form_submitted'];
262
263
264
      }
    }

265
    $ref = $form['#value'];
266
267
268
  }

  // Allow for elements to expand to multiple elements. Radios, checkboxes and files for instance.
269
  if (isset($form['#process']) && !$form['#processed']) {
270
271
    foreach ($form['#process'] as $process => $args) {
      if (function_exists($process)) {
272
273
        $args = array_merge(array($form), $args);
        $form = call_user_func_array($process, $args);
274
275
      }
    }
276
    $form['#processed'] = TRUE;
277
278
279
280
281
  }

  // Recurse through all child elements.
  $count  = 0;
  foreach (element_children($form) as $key) {
Steven Wittens's avatar
Steven Wittens committed
282
    // don't squash an existing tree value
283
284
285
    if (!isset($form[$key]['#tree'])) {
      $form[$key]['#tree'] = $form['#tree'];
    }
Steven Wittens's avatar
Steven Wittens committed
286

287
288
    // don't squash existing parents value
    if (!isset($form[$key]['#parents'])) {
289
290
      // 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
291
292
    }

293
    # Assign a decimal placeholder weight, to preserve original array order
294
295
296
    if (!isset($form[$key]['#weight'])) {
      $form[$key]['#weight'] = $count/1000;
    }
297
    $form[$key] = _form_builder($form_id, $form[$key]);
298
299
300
    $count++;
  }

301
302
303
  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
304
  }
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325

  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) {
  $content = '';
  if (is_array($elements)) {
    uasort($elements, "_form_sort");
  }

326
  if (!$elements['#children']) {
327
    /* render all the children using a theme function */
328
329
330
331
332
333
    if ($elements['#theme'] && !$elements['#theme_used']) {
      $elements['#theme_used'] = TRUE;
      $previous_type = $elements['#type'];
      $elements['#type'] = 'markup';
      $content = theme($elements['#theme'], $elements);
      $elements['#type'] = $previous_type;
334
335
336
337
338
339
340
341
342
    }
    /* render each of the children using form_render and concatenate them */
    if (!$content) {
      foreach (element_children($elements) as $key) {
        $content .= form_render($elements[$key]);
      }
    }
  }
  if ($content) {
343
    $elements['#children'] = $content;
344
345
346
  }

  /* Call the form element renderer */
347
348
349
  if (!$elements['#printed']) {
    $content = theme(($elements['#type']) ? $elements['#type']: 'markup', $elements);
    $elements['#printed'] = TRUE;
350
351
  }

352
353
354
  if ($content) {
    return $elements['#prefix'] . $content . $elements['#suffix'];
  }
355
356
357
358
359
360
}

/**
 * Function used by uasort in form render to sort form via weight.
 */
function _form_sort($a, $b) {
361
362
363
364
  if ($a['#weight'] == $b['#weight']) {
    return 0;
  }
  return ($a['#weight'] < $b['#weight']) ? -1 : 1;
365
366
367
368
369
370
371
}

/**
 * Retrieve the default properties for the defined element type.
 */
function _element_info($type, $refresh = null) {
  static $cache;
Steven Wittens's avatar
Steven Wittens committed
372
373

  $parents = array();
374
  $basic_defaults = array(
375
376
377
    '#description' => NULL,
    '#attributes' => array(),
    '#required' => FALSE,
Steven Wittens's avatar
Steven Wittens committed
378
379
    '#tree' => FALSE,
    '#parents' => $parents
380
381
382
383
384
385
  );
  if ($refresh || !is_array($cache)) {
    $cache = array();
    foreach (module_implements('elements') as $module) {
      $elements = module_invoke($module, 'elements');
      if (is_array($elements)) {
386
        $cache = array_merge_recursive($cache, $elements);
387
388
389
390
      }
    }
    if (sizeof($cache)) {
      foreach ($cache as $element_type => $info) {
391
        $cache[$element_type] = array_merge_recursive($basic_defaults, $info);
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
      }
    }
  }

  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) {
  $select = '';
414
  foreach ($element['#options'] as $key => $choice) {
415
416
417
    if (is_array($choice)) {
      $select .= '<optgroup label="'. $key .'">';
      foreach ($choice as $key => $choice) {
418
        $select .= '<option value="'. $key .'"'. (is_array($element['#value']) ? (in_array($key, $element['#value']) ? ' selected="selected"' : '') : ($element['#value'] == $key ? ' selected="selected"' : '')) .'>'. check_plain($choice) .'</option>';
419
420
421
422
      }
      $select .= '</optgroup>';
    }
    else {
423
      $select .= '<option value="'. $key .'"'. (is_array($element['#value']) ? (in_array($key, $element['#value']) ? ' selected="selected"' : '') : ($element['#value'] == $key ? ' selected="selected"' : '')) .'>'. check_plain($choice) .'</option>';
424
425
    }
  }
Steven Wittens's avatar
Steven Wittens committed
426
  return theme('form_element', $element['#title'], '<select name="'. $element['#name'] .''. ($element['#multiple'] ? '[]' : '') .'"'. ($element['#multiple'] ? ' multiple="multiple" ' : '') . drupal_attributes($element['#attributes']) .' id="' . $element['#id'] .'">'. $select .'</select>', $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
427
428
429
430
431
432
433
434
435
436
437
438
}

/**
 * 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) {
439
  if ($element['#collapsible']) {
440
441
    drupal_add_js('misc/collapse.js');

442
443
444
    $element['#attributes']['class'] .= ' collapsible';
    if ($element['#collapsed']) {
     $element['#attributes']['class'] .= ' collapsed';
445
446
447
    }
  }

448
  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";
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463

}


/**
 * 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" ';
464
  $output .= 'class="'. _form_get_class('form-radio', $element['#required'], form_get_error($element)) .'" ';
465
466
467
468
469
470
  $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>';
471
  }
472
  return theme('form_element', NULL, $output, $element['#description'], $element['#name'], $element['#required'], form_get_error($element));
473
474
475
476
477
478
479
480
481
482
483
484
}

/**
 * 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) {
485
  if ($element['#title'] || $element['#description']) {
486
    return theme('form_element', $element['#title'], $element['#children'], $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
487
488
  }
  else {
489
    return $element['#children'];
490
491
492
493
  }
}

/**
494
 * Format a date selection element.
495
496
497
498
499
 *
 * @param $element
 *   An associative array containing the properties of the element.
 *   Properties used : title, value, options, description, required and attributes.
 * @return
500
 *   A themed HTML string representing the date selection boxes.
501
502
 */
function theme_date($element) {
503
  $output = '<div class="container-inline">' . $element['#children'] . '</div>';
504
  return theme('form_element', $element['#title'], $output, $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
505
506
507
}

/**
508
 * Roll out a single date element.
509
510
511
 */
function expand_date($element) {
  // Default to current date
512
513
  if (!isset($element['#value'])) {
    $element['#value'] = array('day' => format_date(time(), 'custom', 'j'),
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
                            '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':
534
        $options = drupal_map_assoc(range(1, 12), 'map_month');
535
536
537
538
539
        break;
      case 'year':
        $options = drupal_map_assoc(range(1900, 2050));
        break;
    }
Steven Wittens's avatar
Steven Wittens committed
540
    $element[$type] = array('#type' => 'select', '#value' => $element['#value'][$type], '#attributes' => $element['#attributes'], '#parents' => $element['#parents'], '#options' => $options,  '#tree' => TRUE);
541
542
543
544
545
  }

  return $element;
}

546
547
548
549
550
551
/**
 * 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);
}
552
553

/**
554
 * Roll out a single radios element
555
 * to a list of radios, using the options array as index.
556
557
 */
function expand_radios($element) {
558
559
  if (count($element['#options']) > 0) {
    foreach ($element['#options'] as $key => $choice) {
560
      if (!$element[$key]) {
561
        $element[$key] = array('#type' => 'radio', '#title' => $choice, '#return_value' => $key, '#default_value' => $element['#default_value'], '#attributes' => $element['#attributes'], '#parents' => $element['#parents'], '#spawned' => TRUE);
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
      }
    }
  }
  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) {
579
  return theme('form_element', $element['#title'], $element['#value'] . $element['#children'], $element['#description'], $element['#id'], $element['#required'], $element['#error']);
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
}


/**
 * 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" ';
595
  $checkbox .= 'class="'. _form_get_class('form-checkbox', $element['#required'], form_get_error($element)) . '" ';
596
597
598
599
600
601
602
603
  $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>';
604
605
  }

606
  return theme('form_element', NULL, $checkbox, $element['#description'], $element['#name'], $element['#required'], form_get_error($element));
607
608
609
610
611
612
613
614
615
616
617
}

/**
 * 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) {
618
  if ($element['#title'] || $element['#description']) {
619
    return theme('form_element', $element['#title'], $element['#children'], $element['#description'], 'edit-'. $element['#name'], $element['#required'], form_get_error($element));
620
621
  }
  else {
622
    return $element['#children'];
623
624
625
626
  }
}

function expand_checkboxes($element) {
627
  $value = is_array($element['#value']) ? $element['#value'] : array();
Steven Wittens's avatar
Steven Wittens committed
628
  $element['#tree'] = TRUE;
629
630
631
  if (count($element['#options']) > 0) {
    if (!isset($element['#default_value']) || $element['#default_value'] == 0) {
      $element['#default_value'] = array();
632
    }
633
    foreach ($element['#options'] as $key => $choice) {
634
      if (!isset($element[$key])) {
Steven Wittens's avatar
Steven Wittens committed
635
        $element[$key] = array('#type' => 'checkbox', '#processed' => TRUE, '#title' => $choice, '#default_value' => in_array($key, $value), '#attributes' => $element['#attributes']);
636
637
638
639
640
641
642
643
644
645
646
647
      }
    }
  }
  return $element;
}


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

function theme_button($element) {
648
  return '<input type="submit" class="form-'. $element['#button_type'] .'" name="'. $element['#name'] .'" value="'. check_plain($element['#value']) .'" '. drupal_attributes($element['#attributes']) ." />\n";
649
650
651
652
653
654
655
656
657
658
659
660
}

/**
 * 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) {
661
  return '<input type="hidden" name="'. $element['#name'] . '" id="' . $element['#id'] . '" value="'. check_plain($element['#value']) ."\" " . drupal_attributes($element['#attributes']) ." />\n";
662
663
664
665
666
667
668
669
670
671
672
673
}

/**
 * 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) {
674
675
  $size = $element['#size'] ? ' size="' . $element['#size'] . '"' : '';
  if ($element['#autocomplete_path']) {
676
677
    drupal_add_js('misc/autocomplete.js');
    $class = ' form-autocomplete';
678
    $extra =  '<input class="autocomplete" type="hidden" id="'. $element['#id'] .'-autocomplete" value="'. check_url(url($element['#autocomplete_path'], NULL, NULL, TRUE)) .'" disabled="disabled" />';
679
680
  }

681
682
  $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;
683
684
685
686
687
688
689
690
691
692
693
694
695
}

/**
 * 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.
696
697
  $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";
698
699
700
701
702
703
704
705
706
707
708
709
710
}


/**
 * 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) {
711
  $cols = $element['#cols'] ? ' cols="'. $element['#cols'] .'"' : '';
712

713
  return theme('form_element', $element['#title'], '<textarea'. $cols .' rows="'. $element['#rows'] .'" name="'. $element['#name'] .'" id="' . $element['#id'] .'" class="'. _form_get_class('textarea', $element['#required'], form_get_error($element)) .'"'. drupal_attributes($element['#attributes']) .'>'. check_plain($element['#value']) .'</textarea>', $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
}

/**
 * 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) {
729
  return $element['#value'] . $element['#children'];
730
731
732
733
734
735
736
737
738
739
740
741
742
743
}



/**
* 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) {
744
  $size = $element['#size'] ? ' size="'. $element['#size'] .'" ' : '';
745

746
  $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']) .' />';
747

748
  return theme('form_element', $element['#title'], $output, $element['#description'], $element['#id'], $element['#required'], form_get_error($element));
749
750
751
752
753
754
755
756
757
758
759
760
}

/**
 * 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) {
761
  for ($n = (-1 * $element['#delta']); $n <= $element['#delta']; $n++) {
762
763
    $weights[$n] = $n;
  }
764
765
  $element['#options'] = $weights;
  $element['#type'] = 'select';
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789

  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) {
790
  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));
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
}
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".
 */