HTMLMultiSelectField.php

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<?php

class HTMLMultiSelectField extends HTMLFormField implements HTMLNestedFilterable {
    function validate( $value, $alldata ) {
        $p = parent::validate( $value, $alldata );

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

        if ( !is_array( $value ) ) {
            return false;
        }

        # If all options are valid, array_intersect of the valid options
        # and the provided options will return the provided options.
        $validOptions = HTMLFormField::flattenOptions( $this->getOptions() );

        $validValues = array_intersect( $value, $validOptions );
        if ( count( $validValues ) == count( $value ) ) {
            return true;
        } else {
            return $this->msg( 'htmlform-select-badoption' )->parse();
        }
    }

    function getInputHTML( $value ) {
        $value = HTMLFormField::forceToStringRecursive( $value );
        $html = $this->formatOptions( $this->getOptions(), $value );

        return $html;
    }

    function formatOptions( $options, $value ) {
        $html = '';

        $attribs = $this->getAttributes( array( 'disabled', 'tabindex' ) );
        $elementFunc = array( 'Html', $this->mOptionsLabelsNotFromMessage ? 'rawElement' : 'element' );

        foreach ( $options as $label => $info ) {
            if ( is_array( $info ) ) {
                $html .= Html::rawElement( 'h1', array(), $label ) . "\n";
                $html .= $this->formatOptions( $info, $value );
            } else {
                $thisAttribs = array( 'id' => "{$this->mID}-$info", 'value' => $info );

                $checkbox = Xml::check(
                    $this->mName . '[]',
                    in_array( $info, $value, true ),
                    $attribs + $thisAttribs
                );
                $checkbox .= '&#160;' . call_user_func( $elementFunc,
                    'label',
                    array( 'for' => "{$this->mID}-$info" ),
                    $label
                );

                $html .= ' ' . Html::rawElement(
                    'div',
                    array( 'class' => 'mw-htmlform-flatlist-item' ),
                    $checkbox
                );
            }
        }

        return $html;
    }

    function loadDataFromRequest( $request ) {
        if ( $this->mParent->getMethod() == 'post' ) {
            if ( $request->wasPosted() ) {
                # Checkboxes are just not added to the request arrays if they're not checked,
                # so it's perfectly possible for there not to be an entry at all
                return $request->getArray( $this->mName, array() );
            } else {
                # That's ok, the user has not yet submitted the form, so show the defaults
                return $this->getDefault();
            }
        } else {
            # This is the impossible case: if we look at $_GET and see no data for our
            # field, is it because the user has not yet submitted the form, or that they
            # have submitted it with all the options unchecked? We will have to assume the
            # latter, which basically means that you can't specify 'positive' defaults
            # for GET forms.
            # @todo FIXME...
            return $request->getArray( $this->mName, array() );
        }
    }

    function getDefault() {
        if ( isset( $this->mDefault ) ) {
            return $this->mDefault;
        } else {
            return array();
        }
    }

    function filterDataForSubmit( $data ) {
        $data = HTMLFormField::forceToStringRecursive( $data );
        $options = HTMLFormField::flattenOptions( $this->getOptions() );

        $res = array();
        foreach ( $options as $opt ) {
            $res["$opt"] = in_array( $opt, $data, true );
        }

        return $res;
    }

    protected function needsLabel() {
        return false;
    }
}