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MDL-21235 support for optgroups in select

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This commit is contained in:
Petr Skoda 2010-01-16 19:48:01 +00:00
parent d776d59ee2
commit 6770330d17
5 changed files with 50 additions and 28 deletions
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40
lib/outputcomponents.php
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@ -431,7 +431,11 @@ class html_writer {
/**
* Generates a simple select form field
* @param array $options associative array value=>label
* @param array $options associative array value=>label ex.:
* array(1=>'One, 2=>Two)
* it is also possible to specify optgroup as complex label array ex.:
* array(array('Odd'=>array(1=>'One', 3=>'Three)), array('Even'=>array(2=>'Two')))
* array(1=>'One', '--1uniquekey'=>array('More'=>array(2=>'Two', 3=>'Three')))
* @param string $name name of select element
* @param string|array $selected value or arary of values depending on multiple attribute
* @param array|bool $nothing, add nothing selected option, or false of not added
@ -480,17 +484,37 @@ class html_writer {
$output = '';
foreach ($options as $value=>$label) {
$ias = array();
$value = (string)$value; //TODO: add support for opt groups as nested arrays
if (in_array($value, $selected, true)) {
$ias['selected'] = 'selected';
if (is_array($label)) {
// ignore key, it just has to be unique
$output .= self::select_optgroup(key($label), current($label), $selected);
} else {
$output .= self::select_option($label, $value, $selected);
}
$ias['value'] = $value;
$output .= self::tag('option', $ias, $label);
}
return self::tag('select', $attributes, $output);
}
private static function select_option($label, $value, array $selected) {
$attributes = array();
$value = (string)$value;
if (in_array($value, $selected, true)) {
$attributes['selected'] = 'selected';
}
$attributes['value'] = $value;
return self::tag('option', $attributes, $label);
}
private static function select_optgroup($groupname, $options, array $selected) {
if (empty($options)) {
return '';
}
$attributes = array('label'=>$groupname);
$output = '';
foreach ($options as $value=>$label) {
$output .= self::select_option($label, $value, $selected);
}
return self::tag('optgroup', $attributes, $output);
}
}

14
lib/questionlib.php
View file

@ -2351,14 +2351,16 @@ function question_category_select_menu($contexts, $top = false, $currentcat = 0,
global $OUTPUT;
$categoriesarray = question_category_options($contexts, $top, $currentcat, false, $nochildrenof);
if ($selected) {
$nothing = '';
$choose = '';
} else {
$nothing = 'choosedots';
$choose = 'choosedots';
}
$select = html_select::make($categoriesarray, 'category', $selected);
$select->nothingvalue = $nothing;
$select->nested = true;
echo $OUTPUT->select($select);
$options = array();
foreach($categoriesarray as $group=>$opts) {
$options[] = array($group=>$opts);
}
echo html_writer::select($options, 'category', $selected, $choose);
}
/**