<?php
/**
* Helper class to keep track of options when mixing links and form elements.
+ * @todo This badly need some examples and tests :-)
+ *
+ * Copyright © 2008, Niklas Laxstiröm
+ *
+ * Copyright © 2011, Antoine Musso
*
* @author Niklas Laxström
- * @copyright Copyright © 2008, Niklas Laxström
+ * @author Antoine Musso
*/
-class FormOptions {
- const AUTO = -1; //! Automatically detects simple data types
+class FormOptions implements ArrayAccess {
+ /** @name Type constants
+ * Used internally to map an option value to a WebRequest accessor
+ */
+ /* @{ */
+ /** Mark value for automatic detection (for simple data types only) */
+ const AUTO = -1;
+ /** String type, maps guessType() to WebRequest::getText() */
const STRING = 0;
+ /** Integer type, maps guessType() to WebRequest::getInt() */
const INT = 1;
+ /** Boolean type, maps guessType() to WebRequest::getBool() */
const BOOL = 2;
- const INTNULL = 3; //! Useful for namespace selector
+ /** Integer type or null, maps to WebRequest::getIntOrNull()
+ * This is useful for the namespace selector.
+ */
+ const INTNULL = 3;
+ /* @} */
+ /**
+ * @todo Document!
+ */
protected $options = array();
# Setting up
$this->options[$name] = $option;
}
+ public function delete( $name ) {
+ $this->validateName( $name, true );
+ unset( $this->options[$name] );
+ }
+
+ /**
+ * Used to find out which type the data is.
+ * All types are defined in the 'Type constants' section of this class
+ * Please note we do not support detection of INTNULL MediaWiki type
+ * which will be assumed as INT if the data is an integer.
+ *
+ * @param $data Mixed: value to guess type for
+ * @exception MWException Unsupported datatype
+ * @return Type constant
+ */
public static function guessType( $data ) {
- if ( is_bool($data) ) {
+ if ( is_bool( $data ) ) {
return self::BOOL;
- } elseif( is_int($data) ) {
+ } elseif ( is_int( $data ) ) {
return self::INT;
- } elseif( is_string($data) ) {
+ } elseif ( is_string( $data ) ) {
return self::STRING;
} else {
throw new MWException( 'Unsupported datatype' );
# Handling values
+ /**
+ * Verify the given option name exist.
+ *
+ * @param $name String: option name
+ * @param $strict Boolean: throw an exception when the option does not exist (default false)
+ * @return Boolean: true if option exist, false otherwise
+ */
public function validateName( $name, $strict = false ) {
- if ( !isset($this->options[$name]) ) {
+ if ( !isset( $this->options[$name] ) ) {
if ( $strict ) {
throw new MWException( "Invalid option $name" );
} else {
return true;
}
+ /**
+ * Use to set the value of an option.
+ *
+ * @param $name String: option name
+ * @param $value Mixed: value for the option
+ * @param $force Boolean: whether to set the value when it is equivalent to the default value for this option (default false).
+ * @return null
+ */
public function setValue( $name, $value, $force = false ) {
$this->validateName( $name, true );
+
if ( !$force && $value === $this->options[$name]['default'] ) {
// null default values as unchanged
$this->options[$name]['value'] = null;
}
}
+ /**
+ * Get the value for the given option name.
+ * Internally use getValueReal()
+ *
+ * @param $name String: option name
+ * @return Mixed
+ */
public function getValue( $name ) {
$this->validateName( $name, true );
+
return $this->getValueReal( $this->options[$name] );
}
+ /**
+ * @todo Document
+ * @param $option Array: array structure describing the option
+ * @return Mixed. Value or the default value if it is null
+ */
protected function getValueReal( $option ) {
if ( $option['value'] !== null ) {
return $option['value'];
}
}
+ /**
+ * Delete the option value.
+ * This will make future calls to getValue() return the default value.
+ * @param $name String: option name
+ * @return null
+ */
+ public function reset( $name ) {
+ $this->validateName( $name, true );
+ $this->options[$name]['value'] = null;
+ }
+
+ /**
+ * @todo Document
+ * @param $name String: option name
+ * @return null
+ */
public function consumeValue( $name ) {
$this->validateName( $name, true );
$this->options[$name]['consumed'] = true;
+
return $this->getValueReal( $this->options[$name] );
}
+ /**
+ * @todo Document
+ * @param $names Array: array of option names
+ * @return null
+ */
public function consumeValues( /*Array*/ $names ) {
$out = array();
+
foreach ( $names as $name ) {
$this->validateName( $name, true );
$this->options[$name]['consumed'] = true;
$out[] = $this->getValueReal( $this->options[$name] );
}
+
return $out;
}
- # Validating values
-
+ /**
+ * Validate and set an option integer value
+ * The value will be altered to fit in the range.
+ *
+ * @param $name String: option name
+ * @param $min Int: minimum value
+ * @param $max Int: maximum value
+ * @exception MWException Option is not of type int
+ * @return null
+ */
public function validateIntBounds( $name, $min, $max ) {
$this->validateName( $name, true );
- if ( $this->options[$name]['type'] !== self::INT )
+ if ( $this->options[$name]['type'] !== self::INT ) {
throw new MWException( "Option $name is not of type int" );
+ }
$value = $this->getValueReal( $this->options[$name] );
$value = max( $min, min( $max, $value ) );
$this->setValue( $name, $value );
}
- # Getting the data out for use
-
+ /**
+ * Getting the data out for use
+ * @param $all Boolean: whether to include unchanged options (default: false)
+ * @return Array
+ */
public function getUnconsumedValues( $all = false ) {
$values = array();
+
foreach ( $this->options as $name => $data ) {
if ( !$data['consumed'] ) {
if ( $all || $data['value'] !== null ) {
}
}
}
+
return $values;
}
+ /**
+ * Return options modified as an array ( name => value )
+ * @return Array
+ */
public function getChangedValues() {
$values = array();
+
foreach ( $this->options as $name => $data ) {
if ( $data['value'] !== null ) {
$values[$name] = $data['value'];
}
}
+
+ return $values;
+ }
+
+ /**
+ * Format options to an array ( name => value)
+ * @return Array
+ */
+ public function getAllValues() {
+ $values = array();
+
+ foreach ( $this->options as $name => $data ) {
+ $values[$name] = $this->getValueReal( $data );
+ }
+
return $values;
}
# Reading values
- public function fetchValuesFromRequest( WebRequest $r ) {
- foreach ( array_keys($this->options) as $name ) {
+ public function fetchValuesFromRequest( WebRequest $r, $values = false ) {
+ if ( !$values ) {
+ $values = array_keys( $this->options );
+ }
+
+ foreach ( $values as $name ) {
$default = $this->options[$name]['default'];
$type = $this->options[$name]['type'];
throw new MWException( 'Unsupported datatype' );
}
- if ( $value !== $default && $value != null ) {
- $this->options[$name]['value'] = $value;
+ if ( $value !== null ) {
+ $this->options[$name]['value'] = $value === $default ? null : $value;
}
}
}
-}
\ No newline at end of file
+ /** @name ArrayAccess functions
+ * Those function implements PHP ArrayAccess interface
+ * @see http://php.net/manual/en/class.arrayaccess.php
+ */
+ /* @{ */
+ /** Whether option exist*/
+ public function offsetExists( $name ) {
+ return isset( $this->options[$name] );
+ }
+ /** Retrieve an option value */
+ public function offsetGet( $name ) {
+ return $this->getValue( $name );
+ }
+ /** Set an option to given value */
+ public function offsetSet( $name, $value ) {
+ $this->setValue( $name, $value );
+ }
+ /** Delete the option */
+ public function offsetUnset( $name ) {
+ $this->delete( $name );
+ }
+ /* @} */
+}
dépôts / lhc / web / wiklou.git / blobdiff