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<?php |
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namespace Maknz\Slack; |
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use InvalidArgumentException; |
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abstract class BlockElement extends Payload |
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{ |
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/** |
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* Element type. |
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* |
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* @var string |
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*/ |
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protected $type; |
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/** |
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* List of blocks each element is valid for. |
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* |
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* @var array |
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*/ |
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protected static $validFor = [ |
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'button' => ['Button', ['section', 'actions']], |
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'checkbox' => ['Checkbox', ['section', 'actions', 'input']], |
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'datepicker' => ['DatePicker', ['section', 'actions', 'input']], |
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'image' => ['Image', ['section', 'context']], |
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'multi_static_select' => ['MultiSelect', ['section', 'input']], |
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'overflow' => ['Overflow', ['section', 'actions']], |
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'plain_text_input' => ['TextInput', ['section', 'actions', 'input']], |
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'radio_buttons' => ['RadioButtons', ['section', 'actions', 'input']], |
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'static_select' => ['Select', ['section', 'actions', 'input']], |
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// Context Block allows a Text object to be used directly, so need to map types here |
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'plain_text' => ['Text', ['context']], |
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'mrkdwn' => ['Text', ['context']], |
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]; |
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/** |
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* Create a Block element from a keyed array of attributes. |
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* |
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* @param mixed $attributes |
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* |
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* @return BlockElement |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public static function factory($attributes) |
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{ |
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if ($attributes instanceof static) { |
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return $attributes; |
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} |
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if ( ! is_array($attributes)) { |
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throw new InvalidArgumentException('The attributes must be a '.static::class.' or keyed array'); |
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} |
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if ( ! isset($attributes['type'])) { |
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throw new InvalidArgumentException('Cannot create BlockElement without a type attribute'); |
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} |
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$validElements = array_keys(static::$validFor); |
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if ( ! in_array($attributes['type'], $validElements)) { |
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throw new InvalidArgumentException('Invalid Block type "'.$attributes['type'].'". Must be one of: '.implode(', ', $validElements).'.'); |
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} |
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$className = __NAMESPACE__.'\\BlockElement\\'.static::$validFor[$attributes['type']][0]; |
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return new $className($attributes); |
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} |
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/** |
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* Check if an element is valid for a Block. |
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* |
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* @param Block $block |
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* |
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* @return bool |
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*/ |
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public function isValidFor(Block $block) |
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{ |
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$blockType = $block->getType(); |
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$validBlocks = static::$validFor[$this->getType()][1]; |
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return in_array($blockType, $validBlocks); |
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} |
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/** |
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* Get the block type. |
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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 $this->type; |
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} |
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} |
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php-slack /
slack
