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root / drupal7 / sites / all / modules / webform / components / grid.inc @ 8c72e82a

1
<?php
2

    
3
/**
4
 * @file
5
 * Webform module grid component.
6
 */
7

    
8
// Grid depends on functions provided by select.
9
webform_component_include('select');
10

    
11
/**
12
 * Implements _webform_defaults_component().
13
 */
14
function _webform_defaults_grid() {
15
  return array(
16
    'name' => '',
17
    'form_key' => NULL,
18
    'required' => 0,
19
    'pid' => 0,
20
    'weight' => 0,
21
    'value' => '',
22
    'extra' => array(
23
      'options' => '',
24
      'questions' => '',
25
      'optrand' => 0,
26
      'qrand' => 0,
27
      'unique' => 0,
28
      'title_display' => 0,
29
      'custom_option_keys' => 0,
30
      'custom_question_keys' => 0,
31
      'sticky' => TRUE,
32
      'description' => '',
33
      'description_above' => FALSE,
34
      'private' => FALSE,
35
      'analysis' => TRUE,
36
    ),
37
  );
38
}
39

    
40
/**
41
 * Implements _webform_theme_component().
42
 */
43
function _webform_theme_grid() {
44
  return array(
45
    'webform_grid' => array(
46
      'render element' => 'element',
47
      'file' => 'components/grid.inc',
48
    ),
49
    'webform_display_grid' => array(
50
      'render element' => 'element',
51
      'file' => 'components/grid.inc',
52
    ),
53
  );
54
}
55

    
56
/**
57
 * Implements _webform_edit_component().
58
 */
59
function _webform_edit_grid($component) {
60
  $form = array();
61

    
62
  $form['help'] = array(
63
    '#type' => 'fieldset',
64
    '#collapsible' => TRUE,
65
    '#collapsed' => !empty($component['cid']),
66
    '#title' => t('About options and questions&hellip;'),
67
    '#description' => t('Options and questions may be configured here, in additional nested Select Options components, or even both.'),
68
    '#weight' => -4,
69
    'pros_and_cons' => array(
70
      '#theme' => 'table',
71
      '#header' => array('', t('Options and questions configured <strong>here</strong>'), t('Configured in additional <strong>nested</strong> components'), t('Both')),
72
      '#rows' => array(
73
        array(t('Questions'), t('Enter the questions below.'), t('Configure and save this grid, then add additional Select Options components nested (indented) below this grid.'), t('Additional questions from nested components will be displayed below any questions configured here.')),
74
        array(t('Options'), t('Enter options below.'), t('May be different for each question. Initially the same as defined below.'), t('Options from additional nested components will be merged with any options configured here.')),
75
        array(t('Checkboxes'), t('No. Radio buttons only.'), t('Yes. Some or all questions may be multiple choice with check boxes.'), ''),
76
        array(t('Default'), t('Yes. Must be same for all questions.'), t('Yes. May all be the same or different.'), ''),
77
        array(t('Pre-built option lists'), t('No.'), t('Yes.'), ''),
78
        array(t('Required'), t('Yes. Must be same for all questions.'), t('Yes. May all be the same or different.'), ''),
79
        array(t('Question conditionals'), t('No.'), t('Yes. Individual questions may be used in conditional rules and/or actions.'), t('The whole grid may be conditionally shown or required.')),
80
        array(t('Other types of nested components'), t('No.'), t('Yes. Other component types may also be included in the grid. They will be displayed where the options would normally be.'), ''),
81
      ),
82
    ),
83
  );
84

    
85
  if (module_exists('options_element')) {
86
    $form['options'] = array(
87
      '#type' => 'fieldset',
88
      '#title' => t('Options'),
89
      '#collapsible' => TRUE,
90
      '#attributes' => array('class' => array('webform-options-element')),
91
      '#element_validate' => array('_webform_edit_validate_options'),
92
      '#weight' => -3,
93
    );
94
    $form['options']['options'] = array(
95
      '#type' => 'options',
96
      '#options' => _webform_select_options_from_text($component['extra']['options'], TRUE),
97
      '#default_value' => $component['value'],
98
      '#default_value_allowed' => TRUE,
99
      '#optgroups' => FALSE,
100
      '#key_type' => 'mixed',
101
      '#key_type_toggle' => t('Customize option keys (Advanced)'),
102
      '#key_type_toggled' => $component['extra']['custom_option_keys'],
103
      '#default_value_pattern' => '^%.+\[.+\]$',
104
      '#description' => t('<strong>Options to select across the top</strong>, such as "Poor" through "Excellent". Indicate the default to the left of the desired item. Use of only alphanumeric characters and underscores is recommended in keys.') . ' ' . theme('webform_token_help'),
105
    );
106

    
107
    $form['questions'] = array(
108
      '#type' => 'fieldset',
109
      '#title' => t('Questions'),
110
      '#collapsible' => TRUE,
111
      '#attributes' => array('class' => array('webform-options-element')),
112
      '#element_validate' => array('_webform_edit_validate_options'),
113
      '#weight' => -2,
114
    );
115
    $form['questions']['options'] = array(
116
      '#type' => 'options',
117
      '#options' => _webform_select_options_from_text($component['extra']['questions'], TRUE),
118
      '#optgroups' => FALSE,
119
      '#default_value' => FALSE,
120
      '#default_value_allowed' => FALSE,
121
      '#key_type' => 'mixed',
122
      '#key_type_toggle' => t('Customize question keys (Advanced)'),
123
      '#key_type_toggled' => $component['extra']['custom_question_keys'],
124
      '#description' => t('<strong>Questions list down the side of the grid.</strong> For a heading column on the right, append "|" and the right-side heading. Use of only alphanumeric characters and underscores is recommended in keys.') . ' ' . theme('webform_token_help'),
125
    );
126
  }
127
  else {
128
    $form['extra']['options'] = array(
129
      '#type' => 'textarea',
130
      '#title' => t('Options'),
131
      '#default_value' => $component['extra']['options'],
132
      '#description' => t('Options to select across the top, such as "Poor" through "Excellent" or "Stronly Disagree" through "Strongly Agree".') .
133
                          '<p>' . t('One key-value option per line. <strong>Key-value pairs MUST be specified as "safe_key|Some readable option"</strong>. Use of only alphanumeric characters and underscores is recommended in keys.') . '</p>' . theme('webform_token_help'),
134
      '#cols' => 60,
135
      '#rows' => 5,
136
      '#weight' => -3,
137
      '#wysiwyg' => FALSE,
138
      '#element_validate' => array('_webform_edit_validate_select'),
139
    );
140
    $form['extra']['questions'] = array(
141
      '#type' => 'textarea',
142
      '#title' => t('Questions'),
143
      '#default_value' => $component['extra']['questions'],
144
      '#description' => t('Questions list down the side of the grid. One question per line. <strong>Key-value pairs MUST be specified as "safe_key|Some readable question"</strong>. For a heading column on the right, append "|" and the right-side heading. Use of only alphanumeric characters and underscores is recommended in keys.') . ' ' . theme('webform_token_help') . ' ' .
145
                        '<p>' . t('<strong>Or for more control</strong> over the appearance and configuration, create additional additional Select Options or other type components nested under this grid. They will operate as separate components, but be displayed within this grid.') . '</p>',
146
      '#cols' => 60,
147
      '#rows' => 5,
148
      '#weight' => -2,
149
      '#wysiwyg' => FALSE,
150
      '#element_validate' => array('_webform_edit_validate_select'),
151
    );
152
    $form['value'] = array(
153
      '#type' => 'textfield',
154
      '#title' => t('Default value'),
155
      '#default_value' => $component['value'],
156
      '#description' => t('The default option of the grid identified by its key.') . ' ' . theme('webform_token_help'),
157
      '#size' => 60,
158
      '#maxlength' => 1024,
159
      '#weight' => 1,
160
    );
161
  }
162

    
163
  $form['display']['optrand'] = array(
164
    '#type' => 'checkbox',
165
    '#title' => t('Randomize Options'),
166
    '#default_value' => $component['extra']['optrand'],
167
    '#description' => t('Randomizes the order of options on the top when they are displayed in the form.'),
168
    '#parents' => array('extra', 'optrand')
169
  );
170
  $form['display']['qrand'] = array(
171
    '#type' => 'checkbox',
172
    '#title' => t('Randomize Questions'),
173
    '#default_value' => $component['extra']['qrand'],
174
    '#description' => t('Randomize the order of the questions on the side when they are displayed in the form.'),
175
    '#parents' => array('extra', 'qrand')
176
  );
177
  $form['display']['sticky'] = array(
178
    '#type' => 'checkbox',
179
    '#title' => t('Sticky table header'),
180
    '#default_value' => $component['extra']['sticky'],
181
    '#description' => t('Use a sticky (non-scrolling) table header.'),
182
    '#parents' => array('extra', 'sticky')
183
  );
184

    
185
  $form['validation']['unique'] = array(
186
    '#type' => 'checkbox',
187
    '#title' => t('Unique'),
188
    '#return_value' => 1,
189
    '#description' => t('Check that all entered values for this field are unique. The same value is not allowed to be used twice.'),
190
    '#weight' => 1,
191
    '#default_value' => $component['extra']['unique'],
192
    '#parents' => array('extra', 'unique'),
193
  );
194

    
195
  return $form;
196
}
197

    
198
/**
199
 * Implements _webform_render_component().
200
 */
201
function _webform_render_grid($component, $value = NULL, $filter = TRUE, $submission = NULL) {
202
  $node = isset($component['nid']) ? node_load($component['nid']) : NULL;
203

    
204
  $questions = _webform_select_options_from_text($component['extra']['questions'], TRUE);
205
  $options = _webform_select_options_from_text($component['extra']['options'], TRUE);
206
  if ($filter) {
207
    $questions = _webform_select_replace_tokens($questions, $node);
208
    $options = _webform_select_replace_tokens($options, $node);
209
  }
210

    
211
  $element = array(
212
    '#type' => 'webform_grid',
213
    '#title' => $filter ? webform_filter_xss($component['name']) : $component['name'],
214
    '#title_display' => $component['extra']['title_display'] ? $component['extra']['title_display'] : 'before',
215
    '#required' => $component['required'],
216
    '#weight' => $component['weight'],
217
    '#description' => $filter ? webform_filter_descriptions($component['extra']['description'], $node) : $component['extra']['description'],
218
    '#grid_questions' => $questions,
219
    '#grid_options' => $options,
220
    '#default_value' => isset($value) || !strlen($component['value']) ? $value : array_fill_keys(array_keys($questions), $component['value']),
221
    '#grid_default' => $component['value'],
222
    '#optrand' => $component['extra']['optrand'],
223
    '#qrand' => $component['extra']['qrand'],
224
    '#sticky' => $component['extra']['sticky'],
225
    '#theme' => 'webform_grid',
226
    '#theme_wrappers' => array('webform_element'),
227
    '#process' => array('webform_expand_grid'),
228
    '#element_validate' => array('webform_validate_grid'),
229
    '#translatable' => array('title', 'description', 'grid_options', 'grid_questions'),
230
  );
231

    
232
  // Enforce uniqueness.
233
  if ($component['extra']['unique']) {
234
    $element['#element_validate'][] = '_webform_edit_grid_unique_validate';
235
  }
236

    
237
  return $element;
238
}
239

    
240
/**
241
 * A Form API #process function for Webform grid fields.
242
 */
243
function webform_expand_grid($element) {
244
  $options = $element['#grid_options'];
245
  $questions = $element['#grid_questions'];
246
  $weights = array();
247

    
248
  // Process questions and options from nested components.
249
  foreach (element_children($element) as $key) {
250
    $question = $element[$key];
251
    // Both forms and grid displays have #webform_component.
252
    if (isset($question['#webform_component']) &&
253
        $question['#webform_component']['type'] == 'select' &&
254
        !$question['#webform_component']['extra']['aslist'] &&
255
        !$question['#webform_component']['extra']['other_option']) {
256
      $options = webform_grid_merge_options($options, $question['#options']);
257
      $weights[$key] = $question['#weight'];
258
    }
259
  }
260

    
261
  // Add the internal grid questions.
262
  $weight = -1000;
263
  $value = isset($element['#default_value']) ? $element['#default_value'] : array();
264
  foreach ($questions as $key => $question) {
265
    if ($question != '') {
266
      $question_value = isset($value[$key]) && $value[$key] !== '' ? $value[$key] : NULL;
267
      $element[$key] = array(
268
        '#grid_question' => TRUE,
269
        '#title' => $question,
270
        '#required' => $element['#required'],
271
        '#options' => $element['#grid_options'],
272
        '#type' => 'radios',
273
        '#default_value' => $question_value,
274
        '#value' => $question_value,
275
        '#process' => array('form_process_radios', 'webform_expand_select_ids'),
276

    
277
        // Webform handles validation manually.
278
        '#validated' => TRUE,
279
        '#webform_validated' => FALSE,
280
        '#translatable' => array('title'),
281
        '#weight' => $weight,
282
      );
283

    
284
      // Add HTML5 required attribute, if needed.
285
      if ($element['#required']) {
286
        $element[$key]['#attributes']['required'] = 'required';
287
      }
288

    
289
      $weights[$key] = $weight;
290
      $weight++;
291
    }
292
  }
293

    
294
  if (!empty($element['#optrand'])) {
295
    _webform_shuffle_options($options);
296
  }
297
  $element['#grid_options'] = $options;
298

    
299
  asort($weights);
300
  if (!empty($element['#qrand'])) {
301
    _webform_shuffle_options($weights);
302
  }
303
  if ($weights) {
304
    $weight = min($weights);
305
  }
306
  foreach ($weights as $key => $old_weight) {
307
    $element[$key]['#options'] = webform_grid_remove_options($options, $element[$key]['#options']);
308
    $element[$key]['#weight'] = $weight++;
309
    $element['#grid_questions'][$key] = $element[$key]['#title'];
310
  }
311

    
312
  return $element;
313
}
314

    
315
/**
316
 * Helper. Merge select component options in order.
317
 *
318
 * @param array $existing
319
 *   An array of existing values into which any values from $new that aren't in
320
 *   $existing are inserted.
321
 * @param array $new
322
 *   Values to be inserted into $existing.
323
 * @return array
324
 *   The merged array.
325
 */
326
function webform_grid_merge_options($existing, $new) {
327
  $insert = NULL;
328
  $queue = array();
329
  foreach ($new as $key => $value) {
330
    if (isset($existing[$key])) {
331
      // Insert the queue before the found item.
332
      $insert = array_search($key, array_keys($existing));
333
      if ($queue) {
334
        $existing = array_slice($existing, 0, $insert, TRUE) +
335
                    $queue +
336
                    array_slice($existing, $insert, NULL, TRUE);
337
        $insert += count($queue);
338
        $queue = array();
339
      }
340
      $insert++;
341
    }
342
    elseif (is_null($insert)) {
343
      // It is not yet clear yet where to put this item. Add it to the queue.
344
      $queue[$key] = $value;
345
    }
346
    else {
347
      // PHP array_splice does not preserved the keys of the inserted array,
348
      // but array_slice does (if the preserve keys parameter is TRUE).
349
      $existing = array_slice($existing, 0, $insert, TRUE) +
350
                  array($key => $value) +
351
                  array_slice($existing, $insert, NULL, TRUE);
352
      $insert++;
353
    }
354
  }
355
  // Append any left over queued items.
356
  $existing += $queue;
357
  return $existing;
358
}
359

    
360
/**
361
 * Helper. Replace missing options with empty values.
362
 *
363
 * @param array $header
364
 *   An array of options to be used at the grid table header.
365
 * @param array $row_options
366
 *   An array of options to be used for this row.
367
 * @return array
368
 *   The $row_options with any missing options replaced with empty values.
369
 */
370
function webform_grid_remove_options($header, $row_options) {
371
  foreach ($header as $key => $value) {
372
    if (!isset($row_options[$key])) {
373
      $header[$key] = '';
374
    }
375
  }
376
  return $header;
377
}
378

    
379
/**
380
 * Implements _webform_display_component().
381
 */
382
function _webform_display_grid($component, $value, $format = 'html', $submission = array()) {
383
  $node = node_load($component['nid']);
384
  $questions = _webform_select_options_from_text($component['extra']['questions'], TRUE);
385
  $questions = _webform_select_replace_tokens($questions, $node);
386
  $options = _webform_select_options_from_text($component['extra']['options'], TRUE);
387
  $options = _webform_select_replace_tokens($options, $node);
388

    
389
  $element = array(
390
    '#title' => $component['name'],
391
    '#title_display' => $component['extra']['title_display'] ? $component['extra']['title_display'] : 'before',
392
    '#weight' => $component['weight'],
393
    '#format' => $format,
394
    '#grid_questions' => $questions,
395
    '#grid_options' => $options,
396
    '#default_value' => $value,
397
    '#sticky' => $component['extra']['sticky'],
398
    '#theme' => 'webform_display_grid',
399
    '#theme_wrappers' => $format == 'html' ? array('webform_element') : array('webform_element_text'),
400
    '#sorted' => TRUE,
401
    '#translatable' => array('#title', '#grid_questions', '#grid_options'),
402
  );
403

    
404
  foreach ($questions as $key => $question) {
405
    if ($question !== '') {
406
      $element[$key] = array(
407
        '#title' => $question,
408
        '#value' => isset($value[$key]) ? $value[$key] : NULL,
409
        '#translatable' => array('#title', '#value'),
410
      );
411
    }
412
  }
413

    
414
  return $element;
415
}
416

    
417
/**
418
 * Preprocess function for displaying a grid component.
419
 */
420
function template_preprocess_webform_display_grid(&$variables) {
421
  $element =& $variables['element'];
422
  // Expand the grid, suppressing randomization. This builds the grid
423
  // questions and options.
424
  $element['#qrand'] = FALSE;
425
  $element['#optrand'] = FALSE;
426
  $element['#required'] = FALSE;
427
  $element = webform_expand_grid($element);
428
}
429

    
430
/**
431
 * Format the text output for this component.
432
 */
433
function theme_webform_display_grid($variables) {
434
  $element = $variables['element'];
435

    
436
  $component = $element['#webform_component'];
437
  $format = $element['#format'];
438

    
439
  if ($format == 'html') {
440
    $right_titles = _webform_grid_right_titles($element);
441
    $rows = array();
442

    
443
    // Set the header for the table.
444
    $header = _webform_grid_header($element, $right_titles);
445

    
446
    foreach (element_children($element) as $question_key) {
447
      $question_element = $element[$question_key];
448
      $row = array();
449
      $questions = explode('|', $question_element['#title'], 2);
450
      $values = $question_element['#value'];
451
      $values = is_array($values) ? $values : array($values);
452
      $row[] = array('data' => webform_filter_xss($questions[0]), 'class' => array('webform-grid-question'));
453
      if (isset($element['#grid_questions'][$question_key])) {
454
        foreach ($element['#grid_options'] as $option_value => $option_label) {
455
          if (in_array($option_value, $values)) {
456
            $row[] = array('data' => '<strong>X</strong>', 'class' => array('checkbox', 'webform-grid-option'));
457
          }
458
          else {
459
            $row[] = array('data' => '&nbsp;', 'class' => array('checkbox', 'webform-grid-option'));
460
          }
461
        }
462
      }
463
      else {
464
        $question_element['#title_display'] = 'none';
465
        $row[] = array(
466
          'data' => drupal_render($question_element),
467
          'colspan' => count($element['#grid_options']),
468
        );
469
      }
470
      if ($right_titles) {
471
        $row[] = array('data' => isset($questions[1]) ? webform_filter_xss($questions[1]) : '', 'class' => array('webform-grid-question'));
472
      }
473
      $rows[] = $row;
474
    }
475

    
476
    $option_count = count($header) - 1;
477
    $output = theme('table', array('header' => $header, 'rows' => $rows, 'sticky' => $element['#sticky'], 'attributes' => array('class' => array('webform-grid', 'webform-grid-' . $option_count))));
478
  }
479
  else {
480
    $items = array();
481
    foreach (element_children($element) as $question_key) {
482
      $question_element = $element[$question_key];
483
      if (isset($element['#grid_questions'][$question_key])) {
484
        $values = $question_element['#value'];
485
        $values = is_array($values) ? $values : array($values);
486
        foreach ($values as $value_key => $value) {
487
          if (isset($element['#grid_options'][$value])) {
488
            $values[$value_key] = $element['#grid_options'][$value];
489
          }
490
          else {
491
            unset($values[$value_key]);
492
          }
493
        }
494
        $value = implode(', ', $values);
495
      }
496
      else {
497
        $element[$question_key]['#title'] = '';
498
        $value = drupal_render($element[$question_key]);
499
      }
500
      $items[] = ' - ' . _webform_grid_question_header($question_element['#title']) . ': ' . $value;
501
    }
502
    $output = implode("\n", $items);
503
  }
504

    
505
  return $output;
506
}
507

    
508
/**
509
 * Implements _webform_analysis_component().
510
 */
511
function _webform_analysis_grid($component, $sids = array(), $single = FALSE, $join = NULL) {
512
  // Generate the list of options and questions.
513
  $node = node_load($component['nid']);
514
  $questions = _webform_select_options_from_text($component['extra']['questions'], TRUE);
515
  $questions = _webform_select_replace_tokens($questions, $node);
516
  $options = _webform_select_options_from_text($component['extra']['options'], TRUE);
517
  $options = _webform_select_replace_tokens($options, $node);
518

    
519
  // Generate a lookup table of results.
520
  $query = db_select('webform_submitted_data', 'wsd')
521
    ->fields('wsd', array('no', 'data'))
522
    ->condition('wsd.nid', $component['nid'])
523
    ->condition('wsd.cid', $component['cid'])
524
    ->condition('wsd.data', '', '<>')
525
    ->groupBy('wsd.no')
526
    ->groupBy('wsd.data');
527
  $query->addExpression('COUNT(wsd.sid)', 'datacount');
528

    
529
  if (count($sids)) {
530
    $query->condition('wsd.sid', $sids, 'IN');
531
  }
532

    
533
  if ($join) {
534
    $query->innerJoin($join, 'ws2_', 'wsd.sid = ws2_.sid');
535
  }
536

    
537
  $result = $query->execute();
538
  $counts = array();
539
  foreach ($result as $data) {
540
    $counts[$data->no][$data->data] = $data->datacount;
541
  }
542

    
543
  // Create an entire table to be put into the returned row.
544
  $rows = array();
545
  $header = array('');
546

    
547
  // Add options as a header row.
548
  foreach ($options as $option) {
549
    $header[] = webform_filter_xss($option);
550
  }
551

    
552
  // Add questions as each row.
553
  foreach ($questions as $qkey => $question) {
554
    $row = array(webform_filter_xss($question));
555
    foreach ($options as $okey => $option) {
556
      $row[] = !empty($counts[$qkey][$okey]) ? $counts[$qkey][$okey] : 0;
557
    }
558
    $rows[] = $row;
559
  }
560

    
561
  // Return return the table unless there are no internal questions in the grid.
562
  if ($rows) {
563
    return array(
564
      'table_header' => $header,
565
      'table_rows' => $rows,
566
    );
567
  }
568
}
569

    
570
/**
571
 * Implements _webform_table_component().
572
 */
573
function _webform_table_grid($component, $value) {
574
  $node = node_load($component['nid']);
575
  $questions = _webform_select_options_from_text($component['extra']['questions'], TRUE);
576
  $questions = _webform_select_replace_tokens($questions, $node);
577
  $options = _webform_select_options_from_text($component['extra']['options'], TRUE);
578
  $options = _webform_select_replace_tokens($options, $node);
579

    
580
  $output = '';
581
  // Set the value as a single string.
582
  foreach ($questions as $key => $label) {
583
    if (isset($value[$key]) && isset($options[$value[$key]])) {
584
      $output .= webform_filter_xss(_webform_grid_question_header($label)) . ': ' . webform_filter_xss($options[$value[$key]]) . '<br />';
585
    }
586
  }
587

    
588
  // Return output if the grid contains internal questions.
589
  if (count($questions)) {
590
    return $output;
591
  }
592
}
593

    
594
/**
595
 * Implements _webform_csv_headers_component().
596
 */
597
function _webform_csv_headers_grid($component, $export_options) {
598
  $node = node_load($component['nid']);
599
  $items = _webform_select_options_from_text($component['extra']['questions'], TRUE);
600
  $items = _webform_select_replace_tokens($items, $node);
601

    
602
  $header = array();
603
  $header[0] = array('');
604
  $header[1] = array($export_options['header_keys'] ? $component['form_key'] : $component['name']);
605
  $count = 0;
606
  foreach ($items as $key => $item) {
607
    // Empty column per sub-field in main header.
608
    if ($count != 0) {
609
      $header[0][] = '';
610
      $header[1][] = '';
611
    }
612
    // The value for this option.
613
    $header[2][] = $export_options['header_keys'] ? $key : _webform_grid_question_header($item);
614
    $count++;
615
  }
616

    
617
  return $header;
618
}
619

    
620
/**
621
 * Implements _webform_csv_data_component().
622
 */
623
function _webform_csv_data_grid($component, $export_options, $value) {
624
  $node = node_load($component['nid']);
625
  $questions = _webform_select_options_from_text($component['extra']['questions'], TRUE);
626
  $questions = _webform_select_replace_tokens($questions, $node);
627
  $options = _webform_select_options_from_text($component['extra']['options'], TRUE);
628
  $options = _webform_select_replace_tokens($options, $node);
629

    
630
  $return = array();
631
  foreach ($questions as $key => $question) {
632
    if (isset($value[$key]) && isset($options[$value[$key]])) {
633
      $return[] = $export_options['select_keys'] ? $value[$key] : $options[$value[$key]];
634
    }
635
    else {
636
      $return[] = '';
637
    }
638
  }
639
  return $return;
640
}
641

    
642
/**
643
 * A Form API element validate function to check that all choices are unique.
644
 */
645
function _webform_edit_grid_unique_validate($element) {
646
  // Grids may contain nested multiple value select components.
647
  // Create a flat array of values.
648
  $values = array();
649
  $element['#value'] = (array) $element['#value'];
650
  array_walk_recursive($element['#value'], function ($a) use (&$values) { $values[] = $a; });
651

    
652
  $nr_unique = count(array_unique($values));
653
  $nr_values = count($values);
654
  $nr_possible = count($element['#grid_options']);
655
  if (strlen($element['#grid_default']) && isset($element['#grid_options'][$element['#grid_default']])) {
656
    // A default is defined and is one of the options. Don't count default values
657
    // toward uniqueness.
658
    $nr_defaults = count(array_keys($element['#value'], $element['#grid_default']));
659
    if ($nr_defaults) {
660
      $nr_values -= $nr_defaults;
661
      $nr_unique--;
662
    }
663
  }
664
  if ($nr_unique < $nr_values && $nr_unique < $nr_possible) {
665
    // Fewer unique values than values means that at least one value is duplicated.
666
    // Fewer unique values than possible values means that there is a possible choice
667
    // that wasn't used.
668
    form_error($element, t('!title is not allowed to have the same answer for more than one question.', array('!title' => $element['#title'])));
669
  }
670
}
671

    
672
function theme_webform_grid($variables) {
673
  $element = $variables['element'];
674
  $right_titles = _webform_grid_right_titles($element);
675

    
676
  $rows = array();
677

    
678
  // Set the header for the table.
679
  $header = _webform_grid_header($element, $right_titles);
680

    
681
  foreach (element_children($element) as $key) {
682
    $question_element = $element[$key];
683
    $title_element =& $question_element;
684
    if ($question_element['#type'] == 'select_or_other') {
685
      $title_element =& $question_element['select'];
686
    }
687
    $question_titles = explode('|', $title_element['#title'], 2);
688

    
689
    // Create a row with the question title.
690
    $required = !empty($question_element['#required']) ? theme('form_required_marker', array('element' => $question_element)) : '';
691
    $row = array(array('data' => t('!title !required', array('!title' => webform_filter_xss($question_titles[0]), '!required' => $required)), 'class' => array('webform-grid-question')));
692

    
693
    // Render each radio button in the row.
694
    if ($question_element['#type'] == 'radios' || $question_element['#type'] == 'checkboxes') {
695
      $radios = form_process_radios($question_element);
696
      foreach (element_children($radios) as $key) {
697
        $radio_title = $radios[$key]['#title'];
698
        if (!strlen($radio_title)) {
699
          $row[] = '&nbsp;';
700
        }
701
        else {
702
          $radios[$key]['#title'] = $question_element['#title'] . ' - ' . $radio_title;
703
          $radios[$key]['#title_display'] = 'invisible';
704
          $row[] = array('data' => drupal_render($radios[$key]), 'class' => array('checkbox', 'webform-grid-option'), 'data-label' => array($radio_title));
705
        }
706
      }
707
    }
708
    else {
709
      $title_element['#title_display'] = 'none';
710
      $row[] = array(
711
        'data' => drupal_render($question_element),
712
        'colspan' => count($element['#grid_options']),
713
      );
714
    }
715
    if ($right_titles) {
716
      $row[] = array('data' => isset($question_titles[1]) ? webform_filter_xss($question_titles[1]) : '', 'class' => array('webform-grid-question'));
717
    }
718

    
719
    // Convert the parents array into a string, excluding the "submitted" wrapper.
720
    $nested_level = $question_element['#parents'][0] == 'submitted' ? 1 : 0;
721
    $parents = str_replace('_', '-', implode('--', array_slice($question_element['#parents'], $nested_level)));
722

    
723
    $rows[] = array(
724
      'data' => $row,
725
      'class' => empty($question_element['#grid_question'])
726
                    ? array('webform-component', 'webform-component-' . str_replace('_', '-', $question_element['#type']), 'webform-component--' . $parents)
727
                    : array(),
728
    );
729
  }
730

    
731
  $option_count = count($header) - 1;
732
  return theme('table', array('header' => $header, 'rows' => $rows, 'sticky' => $element['#sticky'], 'attributes' => array('class' => array('webform-grid', 'webform-grid-' . $option_count))));
733
}
734

    
735
/**
736
 * Generate a table header suitable for form or html display.
737
 */
738
function _webform_grid_header($element, $right_titles) {
739
  $titles = explode('|', $element['#title'], 2);
740
  $header = array(array('data' => _webform_grid_header_title($element, $titles[0]), 'class' => array('webform-grid-question')));
741
  foreach ($element['#grid_options'] as $option) {
742
    $header[] = array('data' => webform_filter_xss($option), 'class' => array('checkbox', 'webform-grid-option'));
743
  }
744
  if ($right_titles) {
745
    $header[] = array('data' => _webform_grid_header_title($element, isset($titles[1]) ? $titles[1] : ''), 'class' => array('webform-grid-question'));
746
  }
747
  return $header;
748
}
749

    
750
/**
751
 * Create internal component title for table header, if any.
752
 */
753
function _webform_grid_header_title($element, $title) {
754
  $header_title = '';
755
  if ($element['#title_display'] == 'internal') {
756
    $variables = array('element' => $element);
757
    $variables['element']['#title_display'] = 'before';
758
    $variables['element']['#title'] = $title;
759
    $header_title = theme('form_element_label', $variables);
760
  }
761
  return $header_title;
762
}
763

    
764
/**
765
 * Determine if a right-side title column has been specified.
766
 */
767
function _webform_grid_right_titles($element) {
768
  if ($element['#title_display'] == 'internal' && substr_count($element['#title'], '|')) {
769
    return TRUE;
770
  }
771
  foreach ($element['#grid_questions'] as $question_key => $question) {
772
    if (substr_count($question, '|')) {
773
      return TRUE;
774
    }
775
  }
776
  return FALSE;
777
}
778

    
779
/**
780
 * Create a question header for left, right or left/right question headers.
781
 */
782
function _webform_grid_question_header($text) {
783
  return implode('/', array_filter(explode('|', $text)));
784
}
785

    
786
/**
787
 * Element validation for Webform grid fields.
788
 *
789
 * Requires a component implementation because the default required validation
790
 * passes when at least one value is supplied, rather than every value. This
791
 * makes the server validation match the browser validation.
792
 */
793
function webform_validate_grid($element, $form_state) {
794
  if ($element['#required']) {
795
    $values = $form_state['input'];
796
    foreach ($element['#parents'] as $key) {
797
      $values = isset($values[$key]) ? $values[$key] : $values;
798
    }
799
    // Remove any values that aren't grid question (i.e. nested components)
800
    $grid_questions = $element['#grid_questions'];
801
    $values = array_intersect_key($values, $grid_questions);
802
    // Remove any unanswered grid questions.
803
    $answers = array_filter($values, function($item) { return !is_null($item); });
804
    // Give required errors for any questions that aren't answered.
805
    foreach (array_diff_key($grid_questions, $answers) as $question_key => $question) {
806
      form_error($element[$question_key], t('!question field within !name is required.', array('!question' => $question, '!name' => $element['#title'])));
807
    }
808
  }
809
}