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<?php |
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namespace SilverStripe\Forms; |
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use SilverStripe\Dev\Deprecation; |
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/** |
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* Text input field. |
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*/ |
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class TextField extends FormField implements TippableFieldInterface |
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{ |
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/** |
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* @var int |
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*/ |
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protected $maxLength; |
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protected $schemaDataType = FormField::SCHEMA_DATA_TYPE_TEXT; |
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/** |
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* @var Tip|null A tip to render beside the input |
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*/ |
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private $tip; |
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/** |
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* Returns an input field. |
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* |
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* @param string $name |
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* @param null|string $title |
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* @param string $value |
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* @param null|int $maxLength Max characters to allow for this field. If this value is stored |
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* against a DB field with a fixed size it's recommended to set an appropriate max length |
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* matching this size. |
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* @param null|Form $form |
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*/ |
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public function __construct($name, $title = null, $value = '', $maxLength = null, $form = null) |
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{ |
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if ($maxLength) { |
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$this->setMaxLength($maxLength); |
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} |
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if ($form) { |
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$this->setForm($form); |
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} |
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parent::__construct($name, $title, $value); |
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} |
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/** |
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* @param int $maxLength |
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* @return $this |
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*/ |
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public function setMaxLength($maxLength) |
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{ |
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$this->maxLength = $maxLength; |
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return $this; |
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} |
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/** |
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* @return null|int |
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*/ |
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public function getMaxLength() |
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{ |
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return $this->maxLength; |
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} |
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/** |
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* @return Tip|null |
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*/ |
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public function getTip(): ?Tip |
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{ |
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return $this->tip; |
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} |
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/** |
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* Applies a Tip to the field, which shows a popover on the right side of |
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* the input to place additional context or explanation of the field's |
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* purpose in. Currently only supported in React-based forms. |
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* |
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* @param Tip|null $tip The Tip to apply, or null to remove an existing one |
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* @return $this |
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*/ |
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public function setTip(?Tip $tip = null): self |
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{ |
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$this->tip = $tip; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function getAttributes() |
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{ |
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$maxLength = $this->getMaxLength(); |
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$attributes = array(); |
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if ($maxLength) { |
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$attributes['maxLength'] = $maxLength; |
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$attributes['size'] = min($maxLength, 30); |
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} |
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return array_merge( |
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parent::getAttributes(), |
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$attributes |
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); |
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} |
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public function getSchemaDataDefaults() |
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{ |
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$data = parent::getSchemaDataDefaults(); |
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$data['data']['maxlength'] = $this->getMaxLength(); |
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if ($this->getTip() instanceof Tip) { |
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$data['tip'] = $this->getTip()->getTipSchema(); |
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} |
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return $data; |
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} |
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/** |
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* @return string |
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*/ |
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public function InternallyLabelledField() |
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{ |
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Deprecation::notice('4.0', 'Please use ->setValue() instead'); |
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if (!$this->value) { |
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$this->value = $this->Title(); |
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} |
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return $this->Field(); |
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} |
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/** |
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* Validate this field |
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* |
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* @param Validator $validator |
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* @return bool |
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*/ |
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public function validate($validator) |
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{ |
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if (!is_null($this->maxLength) && mb_strlen($this->value) > $this->maxLength) { |
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$validator->validationError( |
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$this->name, |
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_t( |
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'SilverStripe\\Forms\\TextField.VALIDATEMAXLENGTH', |
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'The value for {name} must not exceed {maxLength} characters in length', |
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array('name' => $this->getName(), 'maxLength' => $this->maxLength) |
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), |
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"validation" |
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); |
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return false; |
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} |
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return true; |
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} |
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public function getSchemaValidation() |
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{ |
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$rules = parent::getSchemaValidation(); |
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if ($this->getMaxLength()) { |
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$rules['max'] = [ |
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'length' => $this->getMaxLength(), |
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]; |
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} |
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return $rules; |
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} |
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} |
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In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
integervalues, zero is a special case, in particular the following results might be unexpected: