HTMLDateTimeField.php

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<?php

class HTMLDateTimeField extends HTMLTextField {
    protected static $patterns = [
        'date' => '[0-9]{4}-[01][0-9]-[0-3][0-9]',
        'time' => '[0-2][0-9]:[0-5][0-9]:[0-5][0-9](?:\.[0-9]+)?',
        'datetime' => '[0-9]{4}-[01][0-9]-[0-3][0-9][T ][0-2][0-9]:[0-5][0-9]:[0-5][0-9](?:\.[0-9]+)?Z?',
    ];

    protected $mType = 'datetime';

    public function __construct( $params ) {
        parent::__construct( $params );

        $this->mType = array_key_exists( 'type', $params )
            ? $params['type']
            : 'datetime';

        if ( !in_array( $this->mType, [ 'date', 'time', 'datetime' ] ) ) {
            throw new InvalidArgumentException( "Invalid type '$this->mType'" );
        }

        $this->mClass .= ' mw-htmlform-datetime-field';
    }

    public function getAttributes( array $list ) {
        $parentList = array_diff( $list, [ 'min', 'max' ] );
        $ret = parent::getAttributes( $parentList );

        if ( in_array( 'placeholder', $list ) && !isset( $ret['placeholder'] ) ) {
            // Messages: htmlform-date-placeholder htmlform-time-placeholder htmlform-datetime-placeholder
            $ret['placeholder'] = $this->msg( "htmlform-{$this->mType}-placeholder" )->text();
        }

        if ( in_array( 'min', $list ) && isset( $this->mParams['min'] ) ) {
            $min = $this->parseDate( $this->mParams['min'] );
            if ( $min ) {
                $ret['min'] = $this->formatDate( $min );
                // Because Html::expandAttributes filters it out
                $ret['data-min'] = $ret['min'];
            }
        }
        if ( in_array( 'max', $list ) && isset( $this->mParams['max'] ) ) {
            $max = $this->parseDate( $this->mParams['max'] );
            if ( $max ) {
                $ret['max'] = $this->formatDate( $max );
                // Because Html::expandAttributes filters it out
                $ret['data-max'] = $ret['max'];
            }
        }

        $ret['step'] = 1;
        // Because Html::expandAttributes filters it out
        $ret['data-step'] = 1;

        $ret['type'] = $this->mType;
        $ret['pattern'] = static::$patterns[$this->mType];

        return $ret;
    }

    function loadDataFromRequest( $request ) {
        if ( !$request->getCheck( $this->mName ) ) {
            return $this->getDefault();
        }

        $value = $request->getText( $this->mName );
        $date = $this->parseDate( $value );
        return $date ? $this->formatDate( $date ) : $value;
    }

    function validate( $value, $alldata ) {
        $p = parent::validate( $value, $alldata );

        if ( $p !== true ) {
            return $p;
        }

        if ( $value === '' ) {
            // required was already checked by parent::validate
            return true;
        }

        $date = $this->parseDate( $value );
        if ( !$date ) {
            // Messages: htmlform-date-invalid htmlform-time-invalid htmlform-datetime-invalid
            return $this->msg( "htmlform-{$this->mType}-invalid" )->parseAsBlock();
        }

        if ( isset( $this->mParams['min'] ) ) {
            $min = $this->parseDate( $this->mParams['min'] );
            if ( $min && $date < $min ) {
                // Messages: htmlform-date-toolow htmlform-time-toolow htmlform-datetime-toolow
                return $this->msg( "htmlform-{$this->mType}-toolow", $this->formatDate( $min ) )
                    ->parseAsBlock();
            }
        }

        if ( isset( $this->mParams['max'] ) ) {
            $max = $this->parseDate( $this->mParams['max'] );
            if ( $max && $date > $max ) {
                // Messages: htmlform-date-toohigh htmlform-time-toohigh htmlform-datetime-toohigh
                return $this->msg( "htmlform-{$this->mType}-toohigh", $this->formatDate( $max ) )
                    ->parseAsBlock();
            }
        }

        return true;
    }

    protected function parseDate( $value ) {
        $value = trim( $value );
        if ( $value === '' ) {
            return false;
        }

        if ( $this->mType === 'date' ) {
            $value .= ' T00:00:00+0000';
        }
        if ( $this->mType === 'time' ) {
            $value = '1970-01-01 ' . $value . '+0000';
        }

        try {
            $date = new DateTime( $value, new DateTimeZone( 'GMT' ) );
            return $date->getTimestamp();
        } catch ( Exception $ex ) {
            return false;
        }
    }

    protected function formatDate( $value ) {
        switch ( $this->mType ) {
            case 'date':
                return gmdate( 'Y-m-d', $value );

            case 'time':
                return gmdate( 'H:i:s', $value );

            case 'datetime':
                return gmdate( 'Y-m-d\\TH:i:s\\Z', $value );
        }
    }

    public function getInputOOUI( $value ) {
        $params = [
            'type' => $this->mType,
            'value' => $value,
            'name' => $this->mName,
            'id' => $this->mID,
        ];

        if ( isset( $this->mParams['min'] ) ) {
            $min = $this->parseDate( $this->mParams['min'] );
            if ( $min ) {
                $params['min'] = $this->formatDate( $min );
            }
        }
        if ( isset( $this->mParams['max'] ) ) {
            $max = $this->parseDate( $this->mParams['max'] );
            if ( $max ) {
                $params['max'] = $this->formatDate( $max );
            }
        }

        return new MediaWiki\Widget\DateTimeInputWidget( $params );
    }

    protected function getOOUIModules() {
        return [ 'mediawiki.widgets.datetime' ];
    }

    protected function shouldInfuseOOUI() {
        return true;
    }

}