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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form\Extension\Core\ChoiceList;
/**
* Contains choices that can be selected in a form field.
*
* Each choice has three different properties:
*
* - Choice: The choice that should be returned to the application by the
* choice field. Can be any scalar value or an object, but no
* array.
* - Label: A text representing the choice that is displayed to the user.
* - Value: A uniquely identifying value that can contain arbitrary
* characters, but no arrays or objects. This value is displayed
* in the HTML "value" attribute.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
interface ChoiceListInterface
{
/**
* Returns the list of choices
*
* @return array The choices with their indices as keys
*/
public function getChoices();
/**
* Returns the values for the choices
*
* @return array The values with the corresponding choice indices as keys
*/
public function getValues();
/**
* Returns the choice views of the preferred choices as nested array with
* the choice groups as top-level keys.
*
* Example:
*
* <source>
* array(
* 'Group 1' => array(
* 10 => ChoiceView object,
* 20 => ChoiceView object,
* ),
* 'Group 2' => array(
* 30 => ChoiceView object,
* ),
* )
* </source>
*
* @return array A nested array containing the views with the corresponding
* choice indices as keys on the lowest levels and the choice
* group names in the keys of the higher levels
*/
public function getPreferredViews();
/**
* Returns the choice views of the choices that are not preferred as nested
* array with the choice groups as top-level keys.
*
* Example:
*
* <source>
* array(
* 'Group 1' => array(
* 10 => ChoiceView object,
* 20 => ChoiceView object,
* ),
* 'Group 2' => array(
* 30 => ChoiceView object,
* ),
* )
* </source>
*
* @return array A nested array containing the views with the corresponding
* choice indices as keys on the lowest levels and the choice
* group names in the keys of the higher levels
*
* @see getPreferredValues
*/
public function getRemainingViews();
/**
* Returns the choices corresponding to the given values.
*
* The choices can have any data type.
*
* @param array $values An array of choice values. Not existing values in
* this array are ignored
*
* @return array An array of choices with ascending, 0-based numeric keys
*/
public function getChoicesForValues(array $values);
/**
* Returns the values corresponding to the given choices.
*
* The values must be strings.
*
* @param array $choices An array of choices. Not existing choices in this
* array are ignored
*
* @return array An array of choice values with ascending, 0-based numeric
* keys
*/
public function getValuesForChoices(array $choices);
/**
* Returns the indices corresponding to the given choices.
*
* The indices must be positive integers or strings accepted by
* {@link FormConfigBuilder::validateName()}.
*
* The index "placeholder" is internally reserved.
*
* @param array $choices An array of choices. Not existing choices in this
* array are ignored
*
* @return array An array of indices with ascending, 0-based numeric keys
*/
public function getIndicesForChoices(array $choices);
/**
* Returns the indices corresponding to the given values.
*
* The indices must be positive integers or strings accepted by
* {@link FormConfigBuilder::validateName()}.
*
* The index "placeholder" is internally reserved.
*
* @param array $values An array of choice values. Not existing values in
* this array are ignored
*
* @return array An array of indices with ascending, 0-based numeric keys
*/
public function getIndicesForValues(array $values);
}
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