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<?php
/**
* JSON Content Model
*
* @file
*
* @author Ori Livneh <ori@wikimedia.org>
* @author Kunal Mehta <legoktm@gmail.com>
*/
namespace MediaWiki\Content;
use MediaWiki\Html\Html;
use MediaWiki\Json\FormatJson;
use MediaWiki\Status\Status;
/**
* JSON text content that can be viewed and edit directly by users.
*
* @since 1.24
* @newable
* @stable to extend
* @ingroup Content
*/
class JsonContent extends TextContent {
/**
* @since 1.25
* @var Status
*/
protected $jsonParse;
/**
* @param string $text JSON
* @param string $modelId
* @stable to call
*/
public function __construct( $text, $modelId = CONTENT_MODEL_JSON ) {
parent::__construct( $text, $modelId );
}
/**
* Decodes the JSON string.
*
* Note that this parses it without casting objects to associative arrays.
* Objects and arrays are kept as distinguishable types in the PHP values.
*
* @return Status
*/
public function getData() {
$this->jsonParse ??= FormatJson::parse( $this->getText() );
return $this->jsonParse;
}
/**
* @return bool Whether content is valid.
*/
public function isValid() {
return $this->getData()->isGood();
}
/**
* Pretty-print JSON.
*
* If called before validation, it may return JSON "null".
*
* @return string
*/
public function beautifyJSON() {
return FormatJson::encode( $this->getData()->getValue(), "\t", FormatJson::UTF8_OK );
}
/**
* Construct HTML table representation of any JSON value.
*
* See also valueCell, which is similar.
*
* @param mixed $val
* @return string HTML.
*/
public function rootValueTable( $val ) {
if ( is_object( $val ) ) {
$table = $this->objectTable( $val );
} elseif ( is_array( $val ) ) {
// Wrap arrays in another array so that they're visually boxed in a container.
// Otherwise they are visually indistinguishable from a single value.
$table = $this->arrayTable( [ $val ] );
} else {
$table = Html::rawElement( 'table', [ 'class' => 'mw-json mw-json-single-value' ],
Html::rawElement( 'tbody', [],
Html::rawElement( 'tr', [],
Html::element( 'td', [], $this->primitiveValue( $val ) )
)
)
);
}
return Html::rawElement( 'div', [ 'class' => 'noresize' ], $table );
}
/**
* Create HTML table representing a JSON object.
*
* @param \stdClass $mapping
* @return string HTML
*/
protected function objectTable( $mapping ) {
$rows = [];
$empty = true;
foreach ( $mapping as $key => $val ) {
$rows[] = $this->objectRow( $key, $val );
$empty = false;
}
if ( $empty ) {
$rows[] = Html::rawElement( 'tr', [],
Html::element( 'td', [ 'class' => 'mw-json-empty' ],
wfMessage( 'content-json-empty-object' )->text()
)
);
}
return Html::rawElement( 'table', [ 'class' => 'mw-json' ],
Html::rawElement( 'tbody', [], implode( '', $rows ) )
);
}
/**
* Create HTML table row representing one object property.
*
* @param string $key
* @param mixed $val
* @return string HTML.
*/
protected function objectRow( $key, $val ) {
$thContent = Html::element( 'span', [], $key );
$th = Html::rawElement( 'th', [], $thContent );
$td = $this->valueCell( $val );
return Html::rawElement( 'tr', [], $th . $td );
}
/**
* Create HTML table representing a JSON array.
*
* @param array $mapping
* @return string HTML
*/
protected function arrayTable( $mapping ) {
$rows = [];
$empty = true;
foreach ( $mapping as $val ) {
$rows[] = $this->arrayRow( $val );
$empty = false;
}
if ( $empty ) {
$rows[] = Html::rawElement( 'tr', [],
Html::element( 'td', [ 'class' => 'mw-json-empty' ],
wfMessage( 'content-json-empty-array' )->text()
)
);
}
return Html::rawElement( 'table', [ 'class' => 'mw-json' ],
Html::rawElement( 'tbody', [], implode( "\n", $rows ) )
);
}
/**
* Create HTML table row representing the value in an array.
*
* @param mixed $val
* @return string HTML.
*/
protected function arrayRow( $val ) {
$td = $this->valueCell( $val );
return Html::rawElement( 'tr', [], $td );
}
/**
* Construct HTML table cell representing any JSON value.
*
* @param mixed $val
* @return string HTML.
*/
protected function valueCell( $val ) {
if ( is_object( $val ) ) {
return Html::rawElement( 'td', [], $this->objectTable( $val ) );
}
if ( is_array( $val ) ) {
return Html::rawElement( 'td', [], $this->arrayTable( $val ) );
}
return Html::element( 'td', [ 'class' => 'mw-json-value' ], $this->primitiveValue( $val ) );
}
/**
* Construct text representing a JSON primitive value.
*
* @param mixed $val
* @return string Text.
*/
protected function primitiveValue( $val ) {
if ( is_string( $val ) ) {
// Don't FormatJson::encode for strings since we want quotes
// and new lines to render visually instead of escaped.
return '"' . $val . '"';
}
return FormatJson::encode( $val );
}
}
/** @deprecated class alias since 1.43 */
class_alias( JsonContent::class, 'JsonContent' );
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