MDL-80192 reportbuilder: ensure filter form group elements have labels.

This ensures compliance with the following WCAG criterion:

"H71: Providing a description for groups of form controls using fieldset
and legend elements".

lang/en/form.php

@@ -50,6 +50,7 @@ $string['filetypesnotall'] = 'It is not allowed to select \'All file types\' her
 $string['filetypesnotallowed'] = 'These file types are not allowed here: {$a}';
 $string['filetypesothers'] = 'Other files';
 $string['filetypesunknown'] = 'Unknown file types: {$a}';
+$string['formactions'] = 'Form actions';
 $string['general'] = 'General';
 $string['hideadvanced'] = 'Hide advanced';
 $string['hour'] = 'Hour';

reportbuilder/classes/form/condition.php

@@ -146,9 +146,10 @@ class condition extends dynamic_form {
         $buttons = [];
         $buttons[] = $mform->createElement('submit', 'submitbutton', get_string('apply', 'core_reportbuilder'));
         $buttons[] = $mform->createElement('submit', 'resetconditions',  get_string('resetall', 'core_reportbuilder'),
-            null, null, ['customclassoverride' => 'btn-link']);
+            null, null, ['customclassoverride' => 'btn-link ml-1']);
 
-        $mform->addGroup($buttons, 'buttonar', '', [' '], false);
+        $mform->addGroup($buttons, 'buttonar', get_string('formactions', 'core_form'), '', false)
+            ->setHiddenLabel(true);
         $mform->closeHeaderBefore('buttonar');
 
         $mform->disable_form_change_checker();

reportbuilder/classes/form/filter.php

@@ -149,9 +149,10 @@ class filter extends dynamic_form {
         $buttons = [];
         $buttons[] = $mform->createElement('submit', 'submitbutton', get_string('apply', 'core_reportbuilder'));
         $buttons[] = $mform->createElement('submit', 'resetfilters',  get_string('resetall', 'core_reportbuilder'),
-            null, null, ['customclassoverride' => 'btn-link']);
+            null, null, ['customclassoverride' => 'btn-link ml-1']);
 
-        $mform->addGroup($buttons, 'buttonar', '', [' '], false);
+        $mform->addGroup($buttons, 'buttonar', get_string('formactions', 'core_form'), '', false)
+            ->setHiddenLabel(true);
         $mform->closeHeaderBefore('buttonar');
 
         $mform->disable_form_change_checker();

reportbuilder/classes/local/filters/date.php

@@ -143,7 +143,8 @@ class date extends base {
         $mform->hideIf("{$this->name}_unit", "{$this->name}_operator", 'in', $typesnounit);
 
         // Add operator/value/unit group.
-        $mform->addGroup($elements, "{$this->name}_group", '', '', false);
+        $mform->addGroup($elements, "{$this->name}_group", $this->get_header(), '', false)
+            ->setHiddenLabel(true);
 
         // Date selectors for range operator.
         $mform->addElement('date_selector', "{$this->name}_from", get_string('filterdatefrom', 'core_reportbuilder'),

reportbuilder/classes/local/filters/duration.php

@@ -95,7 +95,8 @@ class duration extends base {
         $mform->setDefault("{$this->name}_unit", 1);
         $mform->hideIf("{$this->name}_unit", "{$this->name}_operator", 'eq', self::DURATION_ANY);
 
-        $mform->addGroup($elements, "{$this->name}_group", '', '', false);
+        $mform->addGroup($elements, "{$this->name}_group", $this->get_header(), '', false)
+            ->setHiddenLabel(true);
     }
 
     /**

reportbuilder/classes/local/filters/number.php

@@ -93,16 +93,16 @@ class number extends base {
             get_string('filterfieldvalue', 'core_reportbuilder', $this->get_header()), ['size' => 3]);
         $mform->setType($this->name . '_value1', PARAM_INT);
         $mform->setDefault($this->name . '_value1', 0);
+        $mform->hideIf($this->name . '_value1', $this->name . '_operator', 'in',
+            [self::ANY_VALUE,  self::IS_NOT_EMPTY,  self::IS_EMPTY]);
 
         $objs['text2'] = $mform->createElement('text', $this->name . '_value2', get_string('to'), ['size' => 3]);
         $mform->setType($this->name . '_value2', PARAM_INT);
         $mform->setDefault($this->name . '_value2', 0);
-
-        $mform->addElement('group', $this->name . '_grp', '', $objs, '', false);
-
-        $mform->hideIf($this->name . '_value1', $this->name . '_operator', 'in',
-            [self::ANY_VALUE,  self::IS_NOT_EMPTY,  self::IS_EMPTY]);
         $mform->hideIf($this->name . '_value2', $this->name . '_operator', 'noteq', self::RANGE);
+
+        $mform->addGroup($objs, $this->name . '_grp', $this->get_header(), '', false)
+            ->setHiddenLabel(true);
     }
 
     /**

reportbuilder/classes/local/filters/select.php

@@ -84,7 +84,8 @@ class select extends base {
         $elements['value'] = $mform->createElement($element, $this->name . '_value',
             get_string('filterfieldvalue', 'core_reportbuilder', $this->get_header()), $options);
 
-        $mform->addElement('group', $this->name . '_group', '', $elements, '', false);
+        $mform->addGroup($elements, $this->name . '_group', $this->get_header(), '', false)
+            ->setHiddenLabel(true);
 
         $mform->hideIf($this->name . '_value', $this->name . '_operator', 'eq', self::ANY_VALUE);
     }

reportbuilder/classes/local/filters/text.php

@@ -92,7 +92,8 @@ class text extends base {
         $elements['value'] = $mform->createElement('text', $this->name . '_value',
             get_string('filterfieldvalue', 'core_reportbuilder', $this->get_header()));
 
-        $mform->addElement('group', $this->name . '_group', '', $elements, '', false);
+        $mform->addGroup($elements, $this->name . '_group', $this->get_header(), '', false)
+            ->setHiddenLabel(true);
 
         $mform->setType($this->name . '_value', PARAM_RAW);
         $mform->hideIf($this->name . '_value', $this->name . '_operator', 'eq', self::ANY_VALUE);