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support optgroups in select

This commit is contained in:
Roland Gruber 2010-10-12 17:47:20 +00:00
parent 8e9d9d082a
commit c0f164dcc7
1 changed files with 56 additions and 14 deletions
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68
lam/lib/html.inc
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@ -667,6 +667,8 @@ class htmlSelect extends htmlElement {
private $selectedElements;
/** descriptive elements */
private $hasDescriptiveElements = false;
/** contains optgroups */
private $containsOptgroups = false;
/** sorting enabled */
private $sortElements = true;
/** right to left text direction */
@ -677,8 +679,19 @@ class htmlSelect extends htmlElement {
/**
* Constructor.
*
* <br>Examples:
* <br>
* <br>$select = new htmlSelect('myName', array('value1', 'value2'), array('value1'));
* <br>
* <br>$select = new htmlSelect('myName', array('label1' => 'value1', 'label2' => 'value2'), array('value1'));
* <br>$select->setHasDescriptiveElements(true);
* <br>
* <br>$select = new htmlSelect('myName', array('optgroupLabel' => array('value1', 'value2')), array('value1'));
* <br>$select->setHasDescriptiveElements(true);
* <br>$select->setContainsOptgroups(true);
*
* @param String $name element name
* @param array $elements list of elememts (label => value)
* @param array $elements list of elements array(label => value) or array(value1, value2) or array('optgroup' => array(...))
* @param array $selectedElements list of selected elements (optional, default none)
* @param int $size size (optional, default = 1)
*/
@ -721,22 +734,49 @@ class htmlSelect extends htmlElement {
}
echo '<select' . $class . $name . $size . $multi . $disabled . ' tabindex="' . $tabindex . "\">\n";
$tabindex++;
if ($this->containsOptgroups) {
foreach ($this->elements as $label => $elements) {
if (sizeof($elements) > 0) {
echo '<optgroup label="' . $label . '">';
$this->printOptionsHTML($elements);
echo '</optgroup>';
}
}
}
else {
$this->printOptionsHTML($this->elements);
}
echo "</select>\n";
if ($this->multiSelect) {
return array($this->name => 'multiselect');
}
else {
return array($this->name => 'select');
}
}
/**
* Prints the HTML code of the option tags.
*
* @param array $elements list of options
*/
private function printOptionsHTML($elements) {
// sorting
if ($this->sortElements) {
if ($this->hasDescriptiveElements) {
$labels = array_keys($this->elements);
$labels = array_keys($elements);
natcasesort($labels);
$newElements = array();
foreach ($labels as $label) {
$newElements[$label] = $this->elements[$label];
$newElements[$label] = $elements[$label];
}
$this->elements = $newElements;
$elements = $newElements;
}
else {
natcasesort($this->elements);
natcasesort($elements);
}
}
foreach ($this->elements as $key => $value) {
foreach ($elements as $key => $value) {
$selected = '';
if ($this->hasDescriptiveElements) {
if (in_array($value, $this->selectedElements)) {
@ -751,13 +791,6 @@ class htmlSelect extends htmlElement {
echo "<option$selected>" . htmlspecialchars($value) . "</option>\n";
}
}
echo "</select>\n";
if ($this->multiSelect) {
return array($this->name => 'multiselect');
}
else {
return array($this->name => 'select');
}
}
/**
@ -769,6 +802,15 @@ class htmlSelect extends htmlElement {
$this->hasDescriptiveElements = $hasDescriptiveElements;
}
/**
* Specifies if the elements are divided into optgroups.
*
* @param boolean $containsOptgroups activates optgroups
*/
public function setContainsOptgroups($containsOptgroups) {
$this->containsOptgroups = $containsOptgroups;
}
/**
* Specifies if multi-selection is enabled (default: disabled).
*