<?php
/**
 * EditableDropdown
 * Represents a set of selectable radio buttons
 * @package forms
 * @subpackage fieldeditor
 */
class EditableCheckboxGroupField extends EditableFormField {
	
	protected $readonly;

	function ReadonlyOption() {
		$this->readonly = true;
		return $this->Option();
	}

	function isReadonly() {
		return $this->readonly;
	}
	
	static $has_many = array(
		"Options" => "EditableCheckboxOption"
	);
	
	static $singular_name = "Checkbox group";
	static $plural_name = "Checkbox groups";
	
	function duplicate() {
		$clonedNode = parent::duplicate();
		
		foreach( $this->Options() as $field ) {
			$newField = $field->duplicate();
			$newField->ParentID = $clonedNode->ID;
			$newField->write();
		}
		
		return $clonedNode;
	}
	
	function delete() {
		$options = $this->Options();
		
		foreach( $options as $option )
			$option->delete();
			
		parent::delete();
	}
	
	function EditSegment() {
		return $this->renderWith( $this->class );
	}
	
	function populateFromPostData( $data ) {
		parent::populateFromPostData( $data );
		
		$fieldSet = $this->Options();
		
		$deletedOptions = explode( ',', $data['Deleted'] );
		$optionNumber = 0;
		
		// store default, etc
		foreach($fieldSet as $option) {
			if($deletedOptions && array_search($option->ID, $deletedOptions) !== false) {
				$option->delete();
				continue;
			}
			
			if(isset($data[$option->ID])) {
				$option->populateFromPostData( $data[$option->ID] );
			}
				
			unset( $data[$option->ID] );
		}
		
		foreach($data as $tempID => $optionData) {
			if(!$tempID || !is_array($optionData) || empty($optionData) || !preg_match('/^_?\d+$/', $tempID)) {
				continue;
			}
			
			// what will we name the new option?
			$newOption = new EditableCheckboxOption();
			$newOption->Name = 'option' . (string)$optionNumber++;
			$newOption->ParentID = $this->ID;
			$newOption->populateFromPostData($optionData);
		}
	}
	
	function DefaultOption() {
		$defaultOption = 0;
		
		foreach( $this->Options() as $option ) {
			if( $option->getField('Default') )
				return $defaultOption;
			else
				$defaultOption++;
		}
		
		return -1;
	}
	
	function getFormField() {
		return $this->createField();
	}
	
	function getFilterField() {
		return $this->createField( true );
	}
	
	function createField($asFilter = false) {
		$optionSet = $this->Options();
		$options = array();
		
		$optionMap = ($optionSet) ? $optionSet->map('ID', 'Title') : array();
		
		return new CheckboxSetField($this->Name, $this->Title, $optionMap);
	}
	
	function getValueFromData($data) {
		if(empty($data[$this->Name])) {
			return "";
		}
		
		$result = '';
		$entries = $data[$this->Name];
		
		if(!is_array($data[$this->Name])) {
			$entries = array($data[$this->Name]);
		}
			
		$selectedOptions = DataObject::get('EditableCheckboxOption', "ParentID={$this->ID} AND ID IN (" . implode(',', $entries) . ")");
		foreach($selectedOptions as $selected) {
			if(!$result) {
				$result = $selected->Title;
			} else {
				$result .= "," . $selected->Title;
			}
		}
		
		return $result;
	}
		
	function TemplateOption() {
		$option = new EditableCheckboxOption();
		return $option->EditSegment();
	}
}

?>