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<?php |
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/** |
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* DomSelector.php - A jQuery selector |
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* |
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* This class is used to create client side requests to the Jaxon functions and callable objects. |
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* |
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* When inserted into a Jaxon response, a DomSelector object must be converted to the corresponding jQuery code. |
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* Therefore, the DomSelector class implements the JsonSerializable interface. |
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* |
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* When used as a parameter of a Jaxon call, the DomSelector must be converted to Jaxon request parameter. |
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* Therefore, the DomSelector class also implements the Jaxon\Request\Call\ParameterInterface interface. |
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* |
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* @package jaxon-jquery |
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* @author Thierry Feuzeu <[email protected]> |
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* @copyright 2016 Thierry Feuzeu <[email protected]> |
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* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License |
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* @link https://github.com/jaxon-php/jaxon-jquery |
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*/ |
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namespace Jaxon\Plugin\Response\JQuery; |
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use Jaxon\Plugin\Response\JQuery\Call\AttrGet; |
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use Jaxon\Plugin\Response\JQuery\Call\AttrSet; |
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use Jaxon\Plugin\Response\JQuery\Call\Method; |
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use Jaxon\Request\Call\JsCall; |
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use Jaxon\Request\Call\ParameterInterface; |
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use JsonSerializable; |
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use function count; |
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use function implode; |
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use function is_a; |
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use function trim; |
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class DomSelector implements JsonSerializable, ParameterInterface |
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{ |
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/** |
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* The jQuery selector path |
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* |
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* @var string |
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*/ |
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protected $sPath; |
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/** |
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* The actions to be applied on the selected element |
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* |
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* @var array |
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*/ |
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protected $aCalls; |
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/** |
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* Convert the selector value to integer |
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* |
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* @var bool |
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*/ |
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protected $bToInt = false; |
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/** |
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* True if this selector is a callback |
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* |
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* @var bool|null |
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*/ |
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protected $bIsCallback = null; |
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/** |
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* The constructor. |
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* |
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* @param string $jQueryNs The jQuery symbol |
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* @param string $sPath The jQuery selector path |
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* @param mixed $xContext A context associated to the selector |
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*/ |
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public function __construct(string $jQueryNs, string $sPath, $xContext) |
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{ |
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$sPath = trim($sPath, " \t"); |
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$this->aCalls = []; |
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$this->sPath = $this->getPath($jQueryNs, $sPath, $xContext); |
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} |
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/** |
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* Get the selector js. |
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* |
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* @param string $jQueryNs The jQuery symbol |
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* @param string $sPath The jQuery selector path |
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* @param mixed $xContext A context associated to the selector |
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*/ |
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private function getPath(string $jQueryNs, string $sPath, $xContext) |
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{ |
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if(!$sPath) |
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{ |
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// If an empty selector is given, use the event target instead |
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return "$jQueryNs(e.currentTarget)"; |
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} |
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if(!$xContext) |
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{ |
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return "$jQueryNs('" . $sPath . "')"; |
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} |
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$sContext = is_a($xContext, self::class) ? |
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$xContext->getScript() : "$jQueryNs('" . trim("$xContext") . "')"; |
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return "$jQueryNs('$sPath', $sContext)"; |
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} |
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/** |
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* Add a call to a jQuery method on the selected elements |
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* |
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* @param string $sMethod |
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* @param array $aArguments |
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* |
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* @return DomSelector |
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*/ |
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public function __call(string $sMethod, array $aArguments) |
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{ |
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if(count($aArguments) === 1) |
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{ |
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// If the only parameter is a selector, and the first call |
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// on that selector is a method, then the selector is a callback. |
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$xArgument = $aArguments[0]; |
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if(is_a($xArgument, self::class) && $xArgument->bIsCallback === null && |
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count($xArgument->aCalls) > 0 && is_a($xArgument->aCalls[0], JsCall::class)) |
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{ |
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$xArgument->bIsCallback = true; |
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} |
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} |
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// Push the action into the array |
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$this->aCalls[] = new Method($sMethod, $aArguments); |
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// Return $this so the calls can be chained |
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return $this; |
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} |
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/** |
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* Get the value of an attribute on the first selected element |
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* |
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* @param string $sAttribute |
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* |
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* @return DomSelector |
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*/ |
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public function __get(string $sAttribute) |
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{ |
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// Push the action into the array |
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$this->aCalls[] = new AttrGet($sAttribute); |
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// Return $this so the calls can be chained |
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return $this; |
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} |
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/** |
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* Set the value of an attribute on the first selected element |
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* |
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* @param string $sAttribute |
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* @param $xValue |
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* |
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* @return void |
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*/ |
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public function __set(string $sAttribute, $xValue) |
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{ |
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// Push the action into the array |
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$this->aCalls[] = new AttrSet($sAttribute, $xValue); |
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// No other call is allowed after a set |
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// return $this; |
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} |
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/** |
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* Explicitely declare the selector as a callback. |
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* |
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* @param bool $bIsCallback |
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* |
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* @return DomSelector |
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*/ |
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public function cb(bool $bIsCallback = true): DomSelector |
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{ |
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$this->bIsCallback = $bIsCallback; |
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return $this; |
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} |
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/** |
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* @return DomSelector |
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*/ |
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public function toInt(): DomSelector |
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{ |
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$this->bToInt = true; |
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return $this; |
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} |
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/** |
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* Generate the jQuery call. |
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* |
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* @return string |
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*/ |
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public function getScript(): string |
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{ |
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$sScript = $this->sPath; |
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if(count($this->aCalls) > 0) |
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{ |
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$sScript .= '.' . implode('.', $this->aCalls); |
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} |
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return $this->bIsCallback ? '(e) => {' . $sScript . '}' : |
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($this->bToInt ? "parseInt($sScript)" : $sScript); |
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} |
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/** |
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* Magic function to generate the jQuery call. |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->getScript(); |
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} |
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/** |
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* Generate the jQuery call, when converting the response into json. |
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* |
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* This is a method of the JsonSerializable interface. |
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* |
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* @return string |
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*/ |
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public function jsonSerialize(): string |
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{ |
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return $this->getScript(); |
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} |
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} |
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