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<?php |
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namespace SilverStripe\Forms; |
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use InvalidArgumentException; |
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use SilverStripe\ORM\ValidationResult; |
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use SilverStripe\View\ViewableData; |
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/** |
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* Form component which contains a castable message |
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* |
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* @mixin ViewableData |
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*/ |
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trait FormMessage |
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{ |
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/** |
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* @var string |
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*/ |
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protected $message = ''; |
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/** |
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* @var string |
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*/ |
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protected $messageType = ''; |
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/** |
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* Casting for message |
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* |
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* @var string |
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*/ |
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protected $messageCast = null; |
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/** |
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* Returns the field message, used by form validation. |
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* |
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* Use {@link setError()} to set this property. |
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* |
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* @return string |
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*/ |
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public function getMessage() |
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{ |
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return $this->message; |
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} |
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/** |
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* Returns the field message type. |
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* |
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* Arbitrary value which is mostly used for CSS classes in the rendered HTML, e.g "required". |
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* |
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* Use {@link setError()} to set this property. |
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* |
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* @return string |
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*/ |
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public function getMessageType() |
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{ |
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return $this->messageType; |
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} |
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/** |
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* Casting type for this message. Will be 'text' or 'html' |
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* |
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* @return string |
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*/ |
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public function getMessageCast() |
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{ |
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return $this->messageCast; |
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} |
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/** |
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* Sets the error message to be displayed on the form field. |
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* |
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* Allows HTML content, so remember to use Convert::raw2xml(). |
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* |
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* @param string $message Message string |
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* @param string $messageType Message type |
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* @param string $messageCast |
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* @return $this |
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*/ |
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public function setMessage( |
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$message, |
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$messageType = ValidationResult::TYPE_ERROR, |
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$messageCast = ValidationResult::CAST_TEXT |
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) { |
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if (!in_array($messageCast, [ValidationResult::CAST_TEXT, ValidationResult::CAST_HTML])) { |
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throw new InvalidArgumentException("Invalid message cast type"); |
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} |
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$this->message = $message; |
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$this->messageType = $messageType; |
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$this->messageCast = $messageCast; |
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return $this; |
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} |
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/** |
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* Get casting helper for message cast, or null if not known |
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* |
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* @return string |
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*/ |
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protected function getMessageCastingHelper() |
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{ |
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switch ($this->getMessageCast()) { |
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case ValidationResult::CAST_TEXT: |
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return 'Text'; |
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case ValidationResult::CAST_HTML: |
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return 'HTMLFragment'; |
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default: |
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return null; |
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} |
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} |
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/** |
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* Get form schema encoded message |
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* |
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* @return array|null Message in array format, or null if no message |
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*/ |
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public function getSchemaMessage() |
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{ |
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$message = $this->getMessage(); |
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if (!$message) { |
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return null; |
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} |
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// Form schema messages treat simple strings as plain text, so nest for html messages |
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if ($this->getMessageCast() === ValidationResult::CAST_HTML) { |
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$message = ['html' => $message]; |
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} |
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return [ |
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'value' => $message, |
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'type' => $this->getMessageType(), |
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]; |
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} |
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} |
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