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executable file 220 lines (189 sloc) 6.326 kB
<?php
/**
* @package forms
* @subpackage fields-structural
*/
/**
* 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
* @package forms
* @subpackage fields-structural
*/
class CompositeField extends FormField {
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 $columnCount = null;
public function __construct($children = null) {
if(is_a($children, 'FieldSet')) {
$this->children = $children;
} elseif(is_array($children)) {
$this->children = new FieldSet($children);
} else {
$children = is_array(func_get_args()) ? func_get_args() : array();
$this->children = new FieldSet($children);
}
Object::__construct();
}
/**
* Returns all the sub-fields, suitable for <% control FieldSet %>
*/
public function FieldSet() {
return $this->children;
}
public function setID($id) {
$this->id = $id;
}
public function Field() {
return $this->FieldHolder();
}
/**
* Returns the fields nested inside another DIV
*/
function FieldHolder() {
$fs = $this->FieldSet();
$idAtt = isset($this->id) ? " id=\"{$this->id}\"" : '';
$className = ($this->columnCount) ? "field CompositeField {$this->extraClass()} multicolumn" : "field CompositeField {$this->extraClass()}";
$content = "<div class=\"$className\"$idAtt>\n";
foreach($fs as $subfield) {
if($this->columnCount) {
$className = "column{$this->columnCount}";
if(!next($fs)) $className .= " lastcolumn";
$content .= "\n<div class=\"{$className}\">\n" . $subfield->FieldHolder() . "\n</div>\n";
} else if($subfield){
$content .= "\n" . $subfield->FieldHolder() . "\n";
}
}
$content .= "</div>\n";
return $content;
}
/**
* Returns the fields in the restricted field holder inside a DIV.
*/
function SmallFieldHolder() {//return $this->FieldHolder();
$fs = $this->FieldSet();
$idAtt = isset($this->id) ? " id=\"{$this->id}\"" : '';
$className = ($this->columnCount) ? "field CompositeField {$this->extraClass()} multicolumn" : "field CompositeField {$this->extraClass()}";
$content = "<div class=\"$className\"$idAtt>";
foreach($fs as $subfield) {//echo ' subf'.$subfield->Name();
if($this->columnCount) {
$className = "column{$this->columnCount}";
if(!next($fs)) $className .= " lastcolumn";
$content .= "<div class=\"{$className}\">" . $subfield->FieldHolder() . "</div>";
} else if($subfield){
$content .= $subfield->SmallFieldHolder() . " ";
}
}
$content .= "</div>";
return $content;
}
/**
* Add all of the non-composite fields contained within this field to the list.
* Sequentialisation is used when connecting the form to its data source
*/
public function collateDataFields(&$list) {
foreach($this->children as $field) {
if(is_object($field)) {
if($field->isComposite()) $field->collateDataFields($list);
if($field->hasData()) {
$name = $field->Name();
if($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] = $field;
}
}
}
}
}
function setForm($form) {
foreach($this->children as $f) if(is_object($f)) $f->setForm($form);
parent::setForm($form);
}
function setColumnCount($columnCount) {
$this->columnCount = $columnCount;
}
function isComposite() { return true; }
function hasData() { return false; }
public function fieldByName($name) {
return $this->children->fieldByName($name);
}
/**
* Add a new child field to the end of the set.
*/
public function push(FormField $field) {
$this->children->push($field);
}
public function insertBefore($field, $insertBefore) {
return $this->children->insertBefore($field, $insertBefore);
}
public function insertBeforeRecursive($field, $insertBefore, $level = 0) {
return $this->children->insertBeforeRecursive($field, $insertBefore, $level+1);
}
public function removeByName($fieldName) {
$this->children->removeByName($fieldName);
}
public function replaceField($fieldName, $newField) {
return $this->children->replaceField($fieldName, $newField);
}
/**
* Return a readonly version of this field. Keeps the composition but returns readonly
* versions of all the children
*/
public function performReadonlyTransformation() {
$newChildren = new FieldSet();
foreach($this->children as $idx => $child) {
if(is_object($child)) $child = $child->transform(new ReadonlyTransformation());
$newChildren->push($child, $idx);
}
$this->children = $newChildren;
$this->readonly = true;
return $this;
}
/**
* Return a readonly version of this field. Keeps the composition but returns readonly
* versions of all the children
*/
public function performDisabledTransformation($trans) {
$newChildren = new FieldSet();
if($this->children) foreach($this->children as $idx => $child) {
if(is_object($child)) {
$child = $child->transform($trans);
}
$newChildren->push($child, $idx);
}
$this->children = $newChildren;
$this->readonly = true;
return $this;
}
function IsReadonly() {
return $this->readonly;
}
function debug() {
$result = "$this->class ($this->name) <ul>";
foreach($this->children as $child) {
$result .= "<li>" . Debug::text($child) . "&nbsp;</li>";
}
$result .= "</ul>";
return $result;
}
function validate($validator){
$valid = true;
foreach($this->children as $idx => $child){
$valid = ($child->validate($validator) && $valid);
}
return $valid;
}
}
?>
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