silverstripe-framework/Forms/CompositeField.php
Damian Mooyman 8dd644d25d
API Namespace all classes
Namespace all templates
Move difflib and BBCodeParser2 to thirdparty
Remove deprecated API marked for removal in 4.0
2016-09-08 10:23:17 +12:00

448 lines
10 KiB
PHP

<?php
namespace SilverStripe\Forms;
use SilverStripe\Dev\Debug;
/**
* Base class for all fields that contain other fields.
*
* Implements sequentialisation - so that when we're saving / loading data, we
* can populate a tabbed form properly. All of the children are stored in
* $this->children
*/
class CompositeField extends FormField {
/**
* @var FieldList
*/
protected $children;
/**
* Set to true when this field is a readonly field
*/
protected $readonly;
/**
* @var $columnCount int Toggle different css-rendering for multiple columns
* ("onecolumn", "twocolumns", "threecolumns"). The content is determined
* by the $children-array, so wrap all items you want to have grouped in a
* column inside a CompositeField.
* Caution: Please make sure that this variable actually matches the
* count of your $children.
*/
protected $columnCount = null;
/**
* @var String custom HTML tag to render with, e.g. to produce a <fieldset>.
*/
protected $tag = 'div';
/**
* @var String Optional description for this set of fields.
* If the {@link $tag} property is set to use a 'fieldset', this will be
* rendered as a <legend> tag, otherwise its a 'title' attribute.
*/
protected $legend;
protected $schemaDataType = FormField::SCHEMA_DATA_TYPE_STRUCTURAL;
public function __construct($children = null) {
if($children instanceof FieldList) {
$this->children = $children;
} elseif(is_array($children)) {
$this->children = new FieldList($children);
} else {
//filter out null/empty items
$children = array_filter(func_get_args());
$this->children = new FieldList($children);
}
$this->children->setContainerField($this);
parent::__construct(null, false);
}
/**
* Merge child field data into this form
*/
public function getSchemaDataDefaults() {
$defaults = parent::getSchemaDataDefaults();
$children = $this->getChildren();
if($children && $children->count()) {
$childSchema = [];
/** @var FormField $child */
foreach($children as $child) {
$childSchema[] = $child->getSchemaData();
}
$defaults['children'] = $childSchema;
}
return $defaults;
}
/**
* Returns all the sub-fields, suitable for <% loop FieldList %>
*
* @return FieldList
*/
public function FieldList() {
return $this->children;
}
/**
* Accessor method for $this->children
*
* @return FieldList
*/
public function getChildren() {
return $this->children;
}
/**
* @param FieldList $children
* @return $this
*/
public function setChildren($children) {
$this->children = $children;
return $this;
}
/**
* @param string $tag
* @return $this
*/
public function setTag($tag) {
$this->tag = $tag;
return $this;
}
/**
* @return string
*/
public function getTag() {
return $this->tag;
}
/**
* @param string $legend
* @return $this
*/
public function setLegend($legend) {
$this->legend = $legend;
return $this;
}
/**
* @return string
*/
public function getLegend() {
return $this->legend;
}
public function extraClass() {
/** @skipUpgrade */
$classes = array('field', 'CompositeField', parent::extraClass());
if($this->columnCount) $classes[] = 'multicolumn';
return implode(' ', $classes);
}
public function getAttributes() {
return array_merge(
parent::getAttributes(),
array(
'tabindex' => null,
'type' => null,
'value' => null,
'title' => ($this->tag == 'fieldset') ? null : $this->legend
)
);
}
/**
* Add all of the non-composite fields contained within this field to the
* list.
*
* Sequentialisation is used when connecting the form to its data source
*
* @param array $list
* @param bool $saveableOnly
*/
public function collateDataFields(&$list, $saveableOnly = false) {
foreach($this->children as $field) {
if(! $field instanceof FormField) {
continue;
}
if($field instanceof CompositeField) {
$field->collateDataFields($list, $saveableOnly);
}
if($saveableOnly) {
$isIncluded = ($field->hasData() && !$field->isReadonly() && !$field->isDisabled());
} else {
$isIncluded = ($field->hasData());
}
if($isIncluded) {
$name = $field->getName();
if($name) {
$formName = (isset($this->form)) ? $this->form->FormName() : '(unknown form)';
if(isset($list[$name])) {
user_error("collateDataFields() I noticed that a field called '$name' appears twice in"
. " your form: '{$formName}'. One is a '{$field->class}' and the other is a"
. " '{$list[$name]->class}'", E_USER_ERROR);
}
$list[$name] = $field;
}
}
}
}
public function setForm($form) {
foreach($this->getChildren() as $field) {
if ($field instanceof FormField) {
$field->setForm($form);
}
}
parent::setForm($form);
return $this;
}
public function setDisabled($disabled) {
parent::setDisabled($disabled);
foreach($this->getChildren() as $child) {
$child->setDisabled($disabled);
}
return $this;
}
public function setReadonly($readonly)
{
parent::setReadonly($readonly);
foreach($this->getChildren() as $child) {
$child->setReadonly($readonly);
}
return $this;
}
public function setColumnCount($columnCount) {
$this->columnCount = $columnCount;
return $this;
}
public function getColumnCount() {
return $this->columnCount;
}
public function isComposite() {
return true;
}
public function hasData() {
return false;
}
public function fieldByName($name) {
return $this->children->fieldByName($name);
}
/**
* Add a new child field to the end of the set.
*
* @param FormField
*/
public function push(FormField $field) {
$this->children->push($field);
}
/**
* Add a new child field to the beginning of the set.
*
* @param FormField
*/
public function unshift(FormField $field) {
$this->children->unshift($field);
}
/**
* @uses FieldList->insertBefore()
*
* @param string $insertBefore
* @param FormField $field
* @return false|FormField
*/
public function insertBefore($insertBefore, $field) {
return $this->children->insertBefore($insertBefore, $field);
}
/**
* @uses FieldList->insertAfter()
* @param string $insertAfter
* @param FormField $field
* @return false|FormField
*/
public function insertAfter($insertAfter, $field) {
return $this->children->insertAfter($insertAfter, $field);
}
/**
* Remove a field from this CompositeField by Name.
* The field could also be inside a CompositeField.
*
* @param string $fieldName The name of the field
* @param boolean $dataFieldOnly If this is true, then a field will only
* be removed if it's a data field. Dataless fields, such as tabs, will
* be left as-is.
*/
public function removeByName($fieldName, $dataFieldOnly = false) {
$this->children->removeByName($fieldName, $dataFieldOnly);
}
public function replaceField($fieldName, $newField) {
return $this->children->replaceField($fieldName, $newField);
}
public function rootFieldList() {
if(is_object($this->containerFieldList)) return $this->containerFieldList->rootFieldList();
else return $this->children;
}
public function __clone() {
/** {@see FieldList::__clone(}} */
$this->setChildren(clone $this->children);
}
/**
* Return a readonly version of this field. Keeps the composition but returns readonly
* versions of all the child {@link FormField} objects.
*
* @return CompositeField
*/
public function performReadonlyTransformation() {
$newChildren = new FieldList();
$clone = clone $this;
if($clone->getChildren()) foreach($clone->getChildren() as $child) {
/** @var FormField $child */
$child = $child->transform(new ReadonlyTransformation());
$newChildren->push($child);
}
$clone->setChildren($newChildren);
$clone->setReadonly(true);
$clone->addExtraClass($this->extraClass());
$clone->setDescription($this->getDescription());
return $clone;
}
/**
* Return a disabled version of this field. Keeps the composition but returns disabled
* versions of all the child {@link FormField} objects.
*
* @return CompositeField
*/
public function performDisabledTransformation() {
$newChildren = new FieldList();
$clone = clone $this;
if($clone->getChildren()) foreach($clone->getChildren() as $child) {
/** @var FormField $child */
$child = $child->transform(new DisabledTransformation());
$newChildren->push($child);
}
$clone->setChildren($newChildren);
$clone->setDisabled(true);
$clone->addExtraClass($this->extraClass());
$clone->setDescription($this->getDescription());
foreach($this->attributes as $k => $v) {
$clone->setAttribute($k, $v);
}
return $clone;
}
public function IsReadonly() {
return $this->readonly;
}
/**
* Find the numerical position of a field within
* the children collection. Doesn't work recursively.
*
* @param string|FormField
* @return int Position in children collection (first position starts with 0). Returns FALSE if the field can't
* be found.
*/
public function fieldPosition($field) {
if(is_string($field)) {
$field = $this->fieldByName($field);
}
if(!$field) {
return false;
}
$i = 0;
foreach($this->children as $child) {
/** @var FormField $child */
if($child->getName() == $field->getName()) {
return $i;
}
$i++;
}
return false;
}
/**
* Transform the named field into a readonly feld.
*
* @param string|FormField
* @return bool
*/
public function makeFieldReadonly($field) {
$fieldName = ($field instanceof FormField) ? $field->getName() : $field;
// Iterate on items, looking for the applicable field
foreach($this->children as $i => $item) {
if($item instanceof CompositeField) {
if($item->makeFieldReadonly($fieldName)) {
return true;
};
} elseif($item instanceof FormField && $item->getName() == $fieldName) {
// Once it's found, use FormField::transform to turn the field into a readonly version of itself.
$this->children->replaceField($fieldName, $item->transform(new ReadonlyTransformation()));
// A true results indicates that the field was found
return true;
}
}
return false;
}
public function debug() {
$result = "$this->class ($this->name) <ul>";
foreach($this->children as $child) {
$result .= "<li>" . Debug::text($child) . "&nbsp;</li>";
}
$result .= "</ul>";
return $result;
}
/**
* Validate this field
*
* @param Validator $validator
* @return bool
*/
public function validate($validator) {
$valid = true;
foreach($this->children as $child){
/** @var FormField $child */
$valid = ($child && $child->validate($validator) && $valid);
}
return $valid;
}
}