InstantClientScript.php

/shopaholic/lib/Nette/Forms/Renderers/InstantClientScript.php

http://github.com/jakubkulhan/shopaholic
PHP | 327 lines | 220 code | 70 blank | 37 comment | 58 complexity | a93a43c12813774d2d786007f125dca3 MD5 | raw file
Possible License(s): WTFPL

<?php



/**

 * Nette Framework

 *

 * Copyright (c) 2004, 2009 David Grudl (http://davidgrudl.com)

 *

 * This source file is subject to the "Nette license" that is bundled

 * with this package in the file license.txt.

 *

 * For more information please see http://nettephp.com

 *

 * @copyright  Copyright (c) 2004, 2009 David Grudl

 * @license    http://nettephp.com/license  Nette license

 * @link       http://nettephp.com

 * @category   Nette

 * @package    Nette\Forms

 * @version    $Id: InstantClientScript.php 201 2009-01-28 05:56:46Z david@grudl.com $

 */







require_once dirname(__FILE__) . '/../../Object.php';







/**

 * Instant validation JavaScript generator.

 *

 * @author     David Grudl

 * @copyright  Copyright (c) 2004, 2009 David Grudl

 * @package    Nette\Forms

 */

final class InstantClientScript extends Object

{

	/** @var string  JavaScript event handler name */

	public $validateFunction;



	/** @var string  JavaScript event handler name */

	public $toggleFunction;



	/** @var string  JavaScript code */

	public $doAlert = 'if (element) element.focus(); alert(message);';



	/** @var string  JavaScript code */

	public $doToggle = 'if (element) element.style.display = visible ? "" : "none";';



	/** @var string */

	public $validateScript;



	/** @var string */

	public $toggleScript;



	/** @var bool */

	private $central;



	/** @var Form */

	private $form;







	public function __construct(Form $form)

	{

		$this->form = $form;

		$name = ucfirst($form->getName()); //ucfirst(strtr($form->getUniqueId(), Form::NAME_SEPARATOR, '_'));

		$this->validateFunction = 'validate' . $name;

		$this->toggleFunction = 'toggle' . $name;

	}







	public function enable()

	{

		$this->validateScript = '';

		$this->toggleScript = '';

		$this->central = TRUE;



		foreach ($this->form->getControls() as $control) {

			$script = $this->getValidateScript($control->getRules());

			if ($script) {

				$this->validateScript .= "do {\n\t$script} while(0);\n\n\t";

			}

			$this->toggleScript .= $this->getToggleScript($control->getRules());



			if ($control instanceof ISubmitterControl && $control->getValidationScope() !== TRUE) {

				$this->central = FALSE;

			}

		}



		if ($this->validateScript || $this->toggleScript) {

			if ($this->central) {

				$this->form->getElementPrototype()->onsubmit("return $this->validateFunction(this)", TRUE);



			} else {

				foreach ($this->form->getComponents(TRUE, 'Nette\Forms\ISubmitterControl') as $control) {

					if ($control->getValidationScope()) {

						$control->getControlPrototype()->onclick("return $this->validateFunction(this)", TRUE);

					}

				}

			}

		}

	}







	/**

	 * Generates the client side validation script.

	 * @return string

	 */

	public function renderClientScript()

	{

		$s = '';



		if ($this->validateScript) {

			$s .= "function $this->validateFunction(sender) {\n\t"

			. "var element, message, res;\n\t"

			. $this->validateScript

			. "return true;\n"

			. "}\n\n";

		}



		if ($this->toggleScript) {

			$s .= "function $this->toggleFunction(sender) {\n\t"

			. "var element, visible, res;\n\t"

			. $this->toggleScript

			. "\n}\n\n"

			. "$this->toggleFunction(null);\n";

		}



		if ($s) {

			return "<script type=\"text/javascript\">\n"

			. "/* <![CDATA[ */\n"

			. $s

			. "/* ]]> */\n"

			. "</script>";

		}

	}







	private function getValidateScript(Rules $rules, $onlyCheck = FALSE)

	{

		$res = '';

		foreach ($rules as $rule) {

			if (!is_string($rule->operation)) continue;



			if (strcasecmp($rule->operation, 'Nette\Forms\InstantClientScript::javascript') === 0) {

				$res .= "$rule->arg\n\t";

				continue;

			}



			$script = $this->getClientScript($rule->control, $rule->operation, $rule->arg);

			if (!$script) continue;



			if (!empty($rule->message)) { // this is rule

				if ($onlyCheck) {

					$res .= "$script\n\tif (" . ($rule->isNegative ? '' : '!') . "res) { return false; }\n\t";



				} else {

					$res .= "$script\n\t"

						. "if (" . ($rule->isNegative ? '' : '!') . "res) { "

						. "message = " . json_encode((string) vsprintf($rule->control->translate($rule->message), (array) $rule->arg)) . "; "

						. $this->doAlert

						. " return false; }\n\t";

				}

			}



			if ($rule->type === Rule::CONDITION) { // this is condition

				$innerScript = $this->getValidateScript($rule->subRules, $onlyCheck);

				if ($innerScript) {

					$res .= "$script\n\tif (" . ($rule->isNegative ? '!' : '') . "res) {\n\t\t" . str_replace("\n\t", "\n\t\t", rtrim($innerScript)) . "\n\t}\n\t";

					if (!$onlyCheck && $rule->control instanceof ISubmitterControl) {

						$this->central = FALSE;

					}

				}

			}

		}

		return $res;

	}







	private function getToggleScript(Rules $rules, $cond = NULL)

	{

		$s = '';

		foreach ($rules->getToggles() as $id => $visible) {

			$s .= "visible = true; {$cond}element = document.getElementById('" . $id . "');\n\t"

				. ($visible ? '' : 'visible = !visible; ')

				. $this->doToggle

				. "\n\t";

		}

		foreach ($rules as $rule) {

			if ($rule->type === Rule::CONDITION && is_string($rule->operation)) {

				$script = $this->getClientScript($rule->control, $rule->operation, $rule->arg);

				if ($script) {

					$res = $this->getToggleScript($rule->subRules, $cond . "$script visible = visible && " . ($rule->isNegative ? '!' : '') . "res;\n\t");

					if ($res) {

						$el = $rule->control->getControlPrototype();

						if ($el->getName() === 'select') {

							$el->onchange("$this->toggleFunction(this)", TRUE);

						} else {

							$el->onclick("$this->toggleFunction(this)", TRUE);

							//$el->onkeyup("$this->toggleFunction(this)", TRUE);

						}

						$s .= $res;

					}

				}

			}

		}

		return $s;

	}







	private function getValueScript(IFormControl $control)

	{

		$tmp = "element = document.getElementById(" . json_encode($control->getHtmlId()) . ");\n\t";

		switch (TRUE) {

		case $control instanceof Checkbox:

			return $tmp . "var val = element.checked;\n\t";



		case $control instanceof RadioList:

			return "for (var val=null, i=0; i<" . count($control->getItems()) . "; i++) {\n\t\t"

			. "element = document.getElementById(" . json_encode($control->getHtmlId() . '-') . "+i);\n\t\t"

			. "if (element.checked) { val = element.value; break; }\n\t"

			. "}\n\t";



		default:

			return $tmp . "var val = element.value.replace(/^\\s+|\\s+\$/g, '');\n\t";

		}

	}







	private function getClientScript(IFormControl $control, $operation, $arg)

	{

		$operation = strtolower($operation);

		switch (TRUE) {

		case $control instanceof HiddenField || $control->isDisabled():

			return NULL;



		case $operation === ':filled' && $control instanceof RadioList:

			return $this->getValueScript($control) . "res = val !== null;";



		case $operation === ':submitted' && $control instanceof SubmitButton:

			return "element=null; res=sender && sender.name==" . json_encode($control->getHtmlName()) . ";";



		case $operation === ':equal' && $control instanceof MultiSelectBox:

			$tmp = array();

			foreach ((is_array($arg) ? $arg : array($arg)) as $item) {

				$tmp[] = "element.options[i].value==" . json_encode((string) $item);

			}

			$first = $control->isFirstSkipped() ? 1 : 0;

			return "element = document.getElementById(" . json_encode($control->getHtmlId()) . ");\n\tres = false;\n\t"

				. "for (var i=$first;i<element.options.length;i++)\n\t\t"

				. "if (element.options[i].selected && (" . implode(' || ', $tmp) . ")) { res = true; break; }";



		case $operation === ':filled' && $control instanceof SelectBox:

			return "element = document.getElementById(" . json_encode($control->getHtmlId()) . ");\n\t"

				. "res = element.selectedIndex >= " . ($control->isFirstSkipped() ? 1 : 0) . ";";



		case $operation === ':filled' && $control instanceof TextInput:

			return $this->getValueScript($control) . "res = val!='' && val!=" . json_encode((string) $control->getEmptyValue()) . ";";



		case $operation === ':minlength' && $control instanceof TextBase:

			return $this->getValueScript($control) . "res = val.length>=" . (int) $arg . ";";



		case $operation === ':maxlength' && $control instanceof TextBase:

			return $this->getValueScript($control) . "res = val.length<=" . (int) $arg . ";";



		case $operation === ':length' && $control instanceof TextBase:

			if (!is_array($arg)) {

				$arg = array($arg, $arg);

			}

			return $this->getValueScript($control) . "res = " . ($arg[0] === NULL ? "true" : "val.length>=" . (int) $arg[0]) . " && "

				. ($arg[1] === NULL ? "true" : "val.length<=" . (int) $arg[1]) . ";";



		case $operation === ':email' && $control instanceof TextBase:

			return $this->getValueScript($control) . 'res = /^[^@]+@[^@]+\.[a-z]{2,6}$/i.test(val);';



		case $operation === ':url' && $control instanceof TextBase:

			return $this->getValueScript($control) . 'res = /^.+\.[a-z]{2,6}(\\/.*)?$/i.test(val);';



		case $operation === ':regexp' && $control instanceof TextBase:

			if (strncmp($arg, '/', 1)) {

				throw new InvalidStateException("Regular expression '$arg' must be JavaScript compatible.");

			}

			return $this->getValueScript($control) . "res = $arg.test(val);";



		case $operation === ':integer' && $control instanceof TextBase:

			return $this->getValueScript($control) . "res = /^-?[0-9]+$/.test(val);";



		case $operation === ':float' && $control instanceof TextBase:

			return $this->getValueScript($control) . "res = /^-?[0-9]*[.,]?[0-9]+$/.test(val);";



		case $operation === ':range' && $control instanceof TextBase:

			return $this->getValueScript($control) . "res = " . ($arg[0] === NULL ? "true" : "parseFloat(val)>=" . json_encode((float) $arg[0])) . " && "

				. ($arg[1] === NULL ? "true" : "parseFloat(val)<=" . json_encode((float) $arg[1])) . ";";



		case $operation === ':filled' && $control instanceof FormControl:

			return $this->getValueScript($control) . "res = val!='';";



		case $operation === ':valid' && $control instanceof FormControl:

			return $this->getValueScript($control) . "res = function(){\n\t" . $this->getValidateScript($control->getRules(), TRUE) . "return true; }();";



		case $operation === ':equal' && $control instanceof FormControl:

			if ($control instanceof Checkbox) $arg = (bool) $arg;

			$tmp = array();

			foreach ((is_array($arg) ? $arg : array($arg)) as $item) {

				if ($item instanceof IFormControl) { // compare with another form control?

					$tmp[] = "val==function(){var element;" . $this->getValueScript($item). "return val;}()";

				} else {

					$tmp[] = "val==" . json_encode($item);

				}

			}

			return $this->getValueScript($control) . "res = (" . implode(' || ', $tmp) . ");";

		}

	}







	public static function javascript()

	{

		return TRUE;

	}



}