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<?php |
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/** |
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* Admin Page Framework |
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* |
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* http://en.michaeluno.jp/admin-page-framework/ |
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* Copyright (c) 2013-2016 Michael Uno; Licensed MIT |
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* |
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*/ |
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/** |
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* Provides utility methods which do not use WordPress functions. |
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* |
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* @since 2.0.0 |
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* @since 3.7.3 Became not abstract for the xdebug max nesting level fatal error workaround. |
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* @extends AdminPageFramework_Utility_SystemInformation |
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* @package AdminPageFramework |
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* @subpackage Utility |
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* @internal |
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*/ |
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class AdminPageFramework_Utility extends AdminPageFramework_Utility_HTMLAttribute { |
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/** |
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* Calls back a user defined function. |
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* |
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* This is meant to be used to filter a value using a callback. When a callback is not available, the first parameter element will be returned. |
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* so set a default return value to the first element of the parameter array. |
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* |
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* @since 3.7.0 |
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* @since 3.8.5 Moved from `AdminPageFramework_Form_Base`. Added the default value to the `$asParameters`second parameter. |
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* @param callable $oCallable |
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* @param string|array $asParameters Parameters to pass to the callback function. |
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*/ |
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public function callBack( $oCallable, $asParameters=array() ) { |
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$_aParameters = self::getAsArray( |
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$asParameters, |
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true // preserve empty |
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); |
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$_mDefaultValue = self::getElement( $_aParameters, 0 ); |
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return is_callable( $oCallable ) |
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? call_user_func_array( $oCallable, $_aParameters ) |
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: $_mDefaultValue; |
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} |
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/** |
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* Checks if the given id (usually a function name) has been called throughout the page load. |
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* |
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* This is used to check if a function which needs to be done only once has been already called or not. |
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* |
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* @since 3.7.0 |
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* @return boolean |
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*/ |
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static public function hasBeenCalled( $sID ) { |
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if ( isset( self::$_aCallStack[ $sID ] ) ) { |
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return true; |
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} |
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self::$_aCallStack[ $sID ] = true; |
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return false; |
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} |
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/** |
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* Stores calls. |
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* @internal |
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*/ |
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static private $_aCallStack = array(); |
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/** |
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* Captures the output buffer of the given function. |
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* @since 3.6.3 |
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* @return string The captured output buffer. |
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*/ |
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static public function getOutputBuffer( $oCallable, array $aParameters=array() ) { |
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ob_start(); |
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echo call_user_func_array( $oCallable, $aParameters ); |
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$_sContent = ob_get_contents(); |
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ob_end_clean(); |
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return $_sContent; |
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} |
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/** |
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* Generates brief object information. |
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* |
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* @remark Meant to be used for the `__toString()` method. |
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* @since 3.6.0 |
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* @return string |
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*/ |
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static public function getObjectInfo( $oInstance ) { |
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$_iCount = count( get_object_vars( $oInstance ) ); |
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$_sClassName = get_class( $oInstance ); |
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return '(object) ' . $_sClassName . ': ' . $_iCount . ' properties.'; |
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} |
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/** |
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* Returns one or the other. |
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* |
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* Saves one conditional statement. |
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* |
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* @remark Use this only when the performance is not critical. |
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* @since 3.5.3 |
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* @param boolean|integer|double|string|array|object|resource|NULL $mValue The value to evaluate. |
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* @param boolean|integer|double|string|array|object|resource|NULL $mTrue The value to return when the first parameter value yields true. |
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* @param boolean|integer|double|string|array|object|resource|NULL $mTrue The value to return when the first parameter value yields false. |
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* @return mixed |
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*/ |
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static public function getAOrB( $mValue, $mTrue=null, $mFalse=null ) { |
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return $mValue ? $mTrue : $mFalse; |
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} |
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} |
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michaeluno /
admin-page-framework
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