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<?php |
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namespace Coderello\Laraflash; |
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use Throwable; |
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use Coderello\Laraflash\Contracts\FlashMessage; |
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use Coderello\Laraflash\Exceptions\InvalidArgumentException; |
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use Coderello\Laraflash\Contracts\FlashMessagesBag as FlashMessagesBagContract; |
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class FlashMessagesBag implements FlashMessagesBagContract |
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{ |
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/** |
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* An array for storing bag items. |
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* |
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* @var FlashMessage[] |
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*/ |
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protected $messages = []; |
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/** |
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* Create a new FlashMessage instance and put it in the bag. |
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* |
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* @param FlashMessage|null $message |
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* |
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* @return FlashMessage |
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*/ |
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public function add(?FlashMessage $message = null): FlashMessage |
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{ |
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if (is_null($message)) { |
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$message = app(FlashMessage::class); |
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} |
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$this->messages[] = $message; |
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return $message; |
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} |
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/** |
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* Delete all instances of FlashMessage from the bag. |
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* |
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* @return FlashMessagesBagContract |
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*/ |
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public function clear(): FlashMessagesBagContract |
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{ |
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$this->messages = []; |
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return $this; |
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} |
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/** |
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* Add one hop to each message. |
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* |
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* @return FlashMessagesBagContract |
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*/ |
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public function keep(): FlashMessagesBagContract |
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{ |
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foreach ($this->messages as $message) { |
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$message->keep(); |
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} |
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return $this; |
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} |
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/** |
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* Get all messages from the bag. |
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* |
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* @return FlashMessage[] |
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*/ |
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public function all(): array |
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{ |
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return $this->messages; |
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} |
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/** |
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* Get messages that should be displayed during the current request from the bag. |
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* |
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* @return FlashMessage[] |
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*/ |
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public function ready(): array |
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{ |
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return array_filter($this->messages, function (FlashMessage $message) { |
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return $message->toArray()['delay'] === 0; |
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}); |
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} |
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/** |
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* Prepare the bag before use (decrement amount of hops and delay, delete expired messages). |
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* |
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* @return FlashMessagesBagContract |
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*/ |
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public function prepare(): FlashMessagesBagContract |
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{ |
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foreach ($this->messages as $key => $message) { |
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if ($message['hops'] <= 1 && $message['delay'] === 0) { |
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unset($this->messages[$key]); |
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continue; |
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} |
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if ($message['hops'] > 1 && $message['delay'] === 0) { |
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$message->hops($message['hops'] - 1); |
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continue; |
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} |
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if ($message['delay'] > 0) { |
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$message->delay($message['delay'] - 1); |
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} |
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} |
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return $this; |
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} |
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/** |
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* Get the evaluated contents of the object. |
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* |
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* @return string |
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* |
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* @throws Throwable |
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*/ |
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public function render(): string |
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{ |
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return implode(config('laraflash.separator'), array_map(function (FlashMessage $message) { |
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return $message->render(); |
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}, $this->ready())); |
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} |
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/** |
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* Data which should be serialized to JSON. |
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* |
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* @return array|mixed |
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*/ |
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public function jsonSerialize() |
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{ |
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return $this->toArray(); |
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} |
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/** |
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* Convert the object to its JSON representation. |
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* |
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* @param int $options |
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* |
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* @return string |
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*/ |
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public function toJson($options = 0): string |
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{ |
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return json_encode($this, $options); |
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} |
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/** |
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* Get the instance as an array. |
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* |
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* @return array |
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*/ |
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public function toArray(): array |
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{ |
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return array_values(array_map(function (FlashMessage $message) { |
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return $message->toArray(); |
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}, $this->ready())); |
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} |
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/** |
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* Whether a offset exists. |
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* |
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* @param mixed $offset |
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* |
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* @return bool |
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*/ |
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public function offsetExists($offset) |
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{ |
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return isset($this->messages[$offset]); |
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} |
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/** |
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* Offset to retrieve. |
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* |
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* @param mixed $offset |
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* |
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* @return FlashMessage |
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*/ |
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public function offsetGet($offset) |
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{ |
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return $this->messages[$offset]; |
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} |
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/** |
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* Offset to set. |
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* |
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* @param mixed $offset |
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* @param FlashMessage $value |
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* |
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* @return void |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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if (! $value instanceof FlashMessage) { |
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throw new InvalidArgumentException; |
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} |
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$this->messages[$offset] = $value; |
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} |
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/** |
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* Offset to unset. |
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* |
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* @param mixed $offset |
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*/ |
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public function offsetUnset($offset) |
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{ |
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unset($this->messages[$offset]); |
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} |
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} |
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Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: