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<?php
/**
* You are allowed to use this API in your web application.
*
* Copyright (C) 2018 by customweb GmbH
*
* This program is licenced under the customweb software licence. With the
* purchase or the installation of the software in your application you
* accept the licence agreement. The allowed usage is outlined in the
* customweb software licence which can be found under
* http://www.sellxed.com/en/software-license-agreement
*
* Any modification or distribution is strictly forbidden. The license
* grants you the installation in one application. For multiuse you will need
* to purchase further licences at http://www.sellxed.com/shop.
*
* See the customweb software licence agreement for more details.
*
*/
/**
* This Util provides some functionality to generate code to use jQuery.
*
* @author Thomas Hunzik
*
*/
final class Customweb_Util_JavaScript {
private function __construct() {
}
/**
* Returns a Javascript Snippet that loads a script and invokes a callback function as soon
* as the script is loaded and the test function succeeds (i.e. returns true).
*
* The test function checks whether the loaded script has been executed and the needed
* functionality is available. If this is the case, the test function returns true.
*
* The callback as well as the test function can either be a named or an anonymous function.
*
* @param string $scriptPath
* @param string $onLoadTestFunction
* @param string $onLoadCallbackFunction
* @return string
*/
public static function loadScript($scriptPath, $onLoadTestFunction, $onLoadCallbackFunction) {
$onLoadTestFunction= trim($onLoadTestFunction);
if (strpos($onLoadTestFunction, 'function') === 0) {
$onLoadTestFunction = '(' . $onLoadTestFunction. ')';
}
$onLoadCallbackFunction= trim($onLoadCallbackFunction);
if (strpos($onLoadCallbackFunction, 'function') === 0) {
$onLoadCallbackFunction= '(' . $onLoadCallbackFunction. ')';
}
$js = '';
$callbackAfterLoadFunctionName = 'a' . Customweb_Util_Rand::getRandomString(30);
$js .= 'var ' . $callbackAfterLoadFunctionName . ' = function() {' . "\n";
$js .= 'var callbackTimer = setInterval(function() {' . "\n";
$js .= 'var call = false;' . "\n";
$js .= 'try {' . "\n";
$js .= 'call = ' . $onLoadTestFunction . '();' . "\n";
$js .= '} catch (e) {}' . "\n";
$js .= 'if (call) {' . "\n";
$js .= 'clearInterval(callbackTimer);' . "\n";
$js .= $onLoadCallbackFunction. '();' . "\n";
$js .= '}' . "\n";
$js .= '}, 10);' . "\n";
$js .= '}' . "\n\n";
$js .= 'var script_tag = document.createElement(\'script\');' . "\n";
$js .= 'script_tag.setAttribute(\'type\', \'text/javascript\');' . "\n";
$js .= 'script_tag.setAttribute(\'src\', \'' . $scriptPath . '\');' . "\n";
$js .= 'script_tag.onload = ' . $callbackAfterLoadFunctionName . ';' . "\n";
$js .= 'script_tag.onreadystatechange = function() { // IE hack' . "\n";
$js .= 'if (this.readyState == \'complete\' || this.readyState == \'loaded\') {' . "\n";
$js .= $callbackAfterLoadFunctionName . '();' . "\n";
$js .= '}' . "\n";
$js .= '}' . "\n";
$js .= 'document.getElementsByTagName(\'head\')[0].appendChild(script_tag);' . "\n";
return $js;
}
public static function loadLibrary($libraryName) {
$js = Customweb_Core_Util_Class::readResource('Customweb_Util_JavaScript', $libraryName . '.js');
if (strpos($js, '____jQueryNameSpace____') !== false) {
$jqueryVariableName = 'j' . Customweb_Util_Rand::getRandomString(30);
$variables = array(
'jQueryNameSpace' => $jqueryVariableName,
);
foreach ($variables as $variableName => $value) {
$js = str_replace('____' . $variableName . '____', $value, $js);
}
$js .= self::getLoadJQueryCode('1.10.2', $jqueryVariableName, 'CustomwebModal.init');
}
return $js;
}
public static function loadLibraryCss($libraryName) {
return Customweb_Core_Util_Class::readResource('Customweb_Util_JavaScript', $libraryName . '.css');
}
/**
* This method returns a JavaScript snipped which loads jQuery library. The process checks if the given
* version is already present, then the library is not loaded again. In any case the jQuery is linked to
* the given variable name. Which allows the loading in "noConflict" mode. This makes it more easy to
* load jQuery in multiple versions and no conflicts with other libraries should occur.
*
* When the library is loaded the callback function is called. The callback function is either a named
* function or better an anonymous function. The anonymous function must be formulated as following:
* <code>
* function() {
* alert("this code is executed");
* }
* </code>
*
* @param string $versionNumber The version number to be used. Deprecated, not used anymore.
* @param string $jqueryVariableName The variable name into which jQuery will be loaded into.
* @param string $onLoadCallbackFunction The callback function, which is called when jQuery is loaded.
* @return string The resulting JavaScript code to perform the load process.
*/
public static function getLoadJQueryCode($versionNumber, $jqueryVariableName, $onLoadCallbackFunction) {
$jqueryScriptUrl = '//jquery.sellxed.com/jquery.min.js';
$localJqueryScript = dirname(__FILE__) . '/jquery-local.txt';
if (file_exists($localJqueryScript)) {
$jqueryScriptUrl = file_get_contents($localJqueryScript);
}
$functionInvocationCode = $onLoadCallbackFunction . '();';
$onLoadCallbackFunction = trim($onLoadCallbackFunction);
if (strpos($onLoadCallbackFunction, 'function') === 0) {
$functionInvocationCode = '(' . $onLoadCallbackFunction . ')();';
}
$globalJQueryVariableName = 'cwJquery' . md5($_SERVER['SERVER_NAME']);
$js = '';
$callbackAfterLoadFunctionName = 'a' . Customweb_Util_Rand::getRandomString(30);
$js .= 'var ' . $jqueryVariableName . ' = "";';
$js .= 'var ' . $callbackAfterLoadFunctionName . ' = function() { ' . $jqueryVariableName . ' = wKWa7Q3254geN4.noConflict( true ); window.' . $globalJQueryVariableName . ' = ' . $jqueryVariableName .'; ';
$js .= $jqueryVariableName . '( document ).ready(function() { ';
$js .= ' ' . $functionInvocationCode . ' ';
$js .= ' }); };'. "\n";
$js .= '{ function cwReloadReadyMethodWhichHasToBeUnique(f){/in/.test(document.readyState)?setTimeout("cwReloadReadyMethodWhichHasToBeUnique("+f+")",9):f()} cwReloadReadyMethodWhichHasToBeUnique(function() {';
$js .= 'if (typeof window.' . $globalJQueryVariableName . ' !== "undefined") {' . "\n";
$js .= $jqueryVariableName . ' = window.' . $globalJQueryVariableName . ';';
$js .= $jqueryVariableName . '( document ).ready(function() { ';
$js .= ' ' . $functionInvocationCode . ' ';
$js .= ' });'. "\n";
$js .= '} else {' . "\n";
$js .= 'var script_tag = document.createElement(\'script\');' . "\n";
$js .= 'script_tag.setAttribute("type", "text/javascript");' . "\n";
$js .= 'script_tag.setAttribute("src", "' . $jqueryScriptUrl . '")' . "\n";
$js .= 'script_tag.onload = ' . $callbackAfterLoadFunctionName . ';' . "\n";
$js .= 'script_tag.onreadystatechange = function() { // IE hack' . "\n";
$js .= 'if (this.readyState == \'complete\' || this.readyState == \'loaded\') {' . "\n";
$js .= $callbackAfterLoadFunctionName . "();\n";
$js .= '}' . "\n";
$js .= '}' . "\n";
$js .= 'document.getElementsByTagName("head")[0].appendChild(script_tag);' . "\n";
$js .= '}}); }' . "\n";
return $js;
}
/**
* This method converts a given PHP array to JavaScript object.
*
* @param array $array
* @return string
*/
public static function toJavaScript(array $array) {
$elements = array();
foreach ($array as $key => $value) {
$element = $key . ':';
if (is_array($value)) {
$element .= self::toJavaScript($value);
}
else {
if (is_object($value) && !method_exists($value, '__toString')) {
throw new Exception(Customweb_I18n_Translation::__("Could not convert object of type '!type' to string.", array('!type' => get_class($value))));
}
$element .= '"' . str_replace('"', '\"', $value) . '"';
}
$elements[] = $element;
}
$output = '{' . implode(', ', $elements) . '}';
return $output;
}
}