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<?php |
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namespace Tgallice\FBMessenger\Model\Attachment\Template; |
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use Tgallice\FBMessenger\Model\Attachment\Template; |
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use Tgallice\FBMessenger\Model\Attachment\Template\ElementList\Element; |
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use Tgallice\FBMessenger\Model\Button as ButtonModel; |
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class ElementList extends Template |
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{ |
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const TOP_STYLE_COMPACT = 'compact'; |
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const TOP_STYLE_LARGE = 'large'; |
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/** |
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* @var Element[] |
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*/ |
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private $elements; |
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/** |
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* @var ButtonModel|null |
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*/ |
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private $button; |
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/** |
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* @var string |
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*/ |
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private $topElementStyle; |
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/** |
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* @param Element[] $elements |
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* @param ButtonModel|null $button |
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* @param string $topElementStyle |
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*/ |
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public function __construct(array $elements, ButtonModel $button = null, $topElementStyle = self::TOP_STYLE_LARGE) |
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{ |
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if (empty($elements) || (count($elements) < 2 || count($elements) > 4)) { |
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throw new \InvalidArgumentException('You must provide between 2 and 4 elements.'); |
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} |
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$topElementStyle = strtolower($topElementStyle); |
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if (!in_array($topElementStyle, [self::TOP_STYLE_LARGE, self::TOP_STYLE_COMPACT])) { |
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throw new \InvalidArgumentException(sprintf('"%s" is not a valid top element style.', $topElementStyle)); |
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} |
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if ($topElementStyle === self::TOP_STYLE_LARGE && empty($elements[0]->getImageUrl())) { |
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throw new \InvalidArgumentException(sprintf('If the top element style is "%s" your first element must have an image url', self::TOP_STYLE_LARGE)); |
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} |
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$this->elements = $elements; |
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$this->button = $button; |
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$this->topElementStyle = $topElementStyle; |
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} |
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/** |
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* @return Element[] |
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*/ |
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public function getElements() |
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{ |
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return $this->elements; |
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} |
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/** |
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* @return string |
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*/ |
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public function getTopElementStyle() |
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{ |
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return $this->topElementStyle; |
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} |
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/** |
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* @return null|ButtonModel |
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*/ |
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public function getButton() |
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{ |
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return $this->button; |
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} |
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/** |
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* @return string |
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*/ |
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public function getType() |
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{ |
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return Template::TYPE_LIST; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function jsonSerialize() |
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{ |
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return [ |
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'template_type' => $this->getType(), |
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'elements' => $this->elements, |
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'buttons' => $this->button ? [$this->button] : null, |
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'top_element_style' => $this->topElementStyle, |
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]; |
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} |
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} |
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tgallice /
fb-messenger-sdk
