class.queue.php

            if ($include_queue && ($q = $this->getQueue())
                && ($q_conds = $q->getConditions())
            ) {
                $this->_conditions = array_merge($this->_conditions, $q_conds);
            }
        }
        return $this->_conditions;
    }

    static function __create($vars) {
        $c = new static($vars);
        $c->save();
        return $c;
    }

    static function placeholder($vars) {
        return static::__hydrate($vars);
    }

    function update($vars, $root='Ticket') {
        $form = $this->getDataConfigForm($vars);
        foreach ($form->getClean() as $k=>$v)
            $this->set($k, $v);

        // Do the annotations
        $this->_annotations = $annotations = array();
        if (isset($vars['annotations'])) {
            foreach (@$vars['annotations'] as $i=>$class) {
                if ($vars['deco_column'][$i] != $this->id)
                    continue;
                if (!class_exists($class) || !is_subclass_of($class, 'QueueColumnAnnotation'))
                    continue;
                $json = array('c' => $class, 'p' => $vars['deco_pos'][$i]);
                $annotations[] = $json;
                $this->_annotations[] = QueueColumnAnnotation::fromJson($json);
            }
        }

        // Do the conditions
        $this->_conditions = $conditions = array();
        if (isset($vars['conditions'])) {
            list($this->_conditions, $conditions)
                = self::getConditionsFromPost($vars, $this->id, $root);
        }

        // Store as JSON array
        $this->annotations = JsonDataEncoder::encode($annotations);
        $this->conditions = JsonDataEncoder::encode($conditions);
    }

    static function getConditionsFromPost(array $vars, $myid, $root='Ticket') {
        $condition_objects = $conditions = array();

        if (!isset($vars['conditions']))
            return array($condition_objects, $conditions);

        foreach (@$vars['conditions'] as $i=>$id) {
            if ($vars['condition_column'][$i] != $myid)
                // Not a condition for this column
                continue;
            // Determine the criteria
            $name = $vars['condition_field'][$i];
            $fields = CustomQueue::getSearchableFields($root);
            if (!isset($fields[$name]))
                // No such field exists for this queue root type
                continue;
            $parts = CustomQueue::getSearchField($fields[$name], $name);
            $search_form = new SimpleForm($parts, $vars, array('id' => $id));
            $search_form->getField("{$name}+search")->value = true;
            $crit = $search_form->getClean();
            // Check the box to enable searching on the field
            $crit["{$name}+search"] = true;

            // Isolate only the critical parts of the criteria
            $crit = QueueColumnCondition::isolateCriteria($crit);

            // Determine the properties
            $props = array();
            foreach ($vars['properties'] as $i=>$cid) {
                if ($cid != $id)
                    // Not a property for this condition
                    continue;

                // Determine the property configuration
                $prop = $vars['property_name'][$i];
                if (!($F = QueueColumnConditionProperty::getField($prop))) {
                    // Not a valid property
                    continue;
                }
                $prop_form = new SimpleForm(array($F), $vars, array('id' => $cid));
                $props[$prop] = $prop_form->getField($prop)->getClean();
            }
            $json = array('crit' => $crit, 'prop' => $props);
            $condition_objects[] = QueueColumnCondition::fromJson($json);
            $conditions[] = $json;
        }
        return array($condition_objects, $conditions);
    }
}

class QueueExport
extends VerySimpleModel {
    static $meta = array(
        'table' => QUEUE_EXPORT_TABLE,
        'pk' => array('id'),
        'joins' => array(
            'queue' => array(
                'constraint' => array('queue_id' => 'CustomQueue.id'),
            ),
        ),
        'select_related' => array('queue'),
        'ordering' => array('sort'),
    );


    function getPath() {
        return $this->path;
    }

    function getField() {
        return $this->getPath();
    }

    function getHeading() {
        return $this->heading;
    }

    static function create($vars=false) {
        $inst = new static($vars);
        return $inst;
    }
}

class QueueColumnGlue
extends VerySimpleModel {
    static $meta = array(
        'table' => QUEUE_COLUMN_TABLE,
        'pk' => array('queue_id', 'column_id'),
        'joins' => array(
            'column' => array(
                'constraint' => array('column_id' => 'QueueColumn.id'),
            ),
            'queue' => array(
                'constraint' => array('queue_id' => 'CustomQueue.id'),
            ),
        ),
        'select_related' => array('column', 'queue'),
        'ordering' => array('sort'),
    );
}

class QueueColumnGlueMIM
extends ModelInstanceManager {
    function getOrBuild($modelClass, $fields, $cache=true) {
        $m = parent::getOrBuild($modelClass, $fields, $cache);
        if ($m && $modelClass === 'QueueColumnGlue') {
            // Instead, yield the QueueColumn instance with the local fields
            // in the association table as annotations
            $m = AnnotatedModel::wrap($m->column, $m, 'QueueColumn');
        }
        return $m;
    }
}

class QueueColumnListBroker
extends InstrumentedList {
    function __construct($fkey, $queryset=false) {
        parent::__construct($fkey, $queryset, 'QueueColumnGlueMIM');
        $this->queryset->select_related('column');
    }

    function add($column, $glue=null, $php7_is_annoying=true) {
        $glue = $glue ?: new QueueColumnGlue();
        $glue->column = $column;
        $anno = AnnotatedModel::wrap($column, $glue);
        parent::add($anno, false);
        return $anno;
    }
}

class QueueSort
extends VerySimpleModel {
    static $meta = array(
        'table' => QUEUE_SORT_TABLE,
        'pk' => array('id'),
        'ordering' => array('name'),
        'joins' => array(
            'queue' => array(
                'constraint' => array('queue_id' => 'CustomQueue.id'),
            ),
        ),
    );

    var $_columns;

    function getRoot($hint=false) {
        switch ($hint ?: $this->root) {
        case 'T':
        default:
            return 'Ticket';
        }
    }

    function getName() {
        return $this->name;
    }

    function getId() {
        return $this->id;
    }

    function applySort(QuerySet $query, $reverse=false, $root=false) {
        $fields = CustomQueue::getSearchableFields($this->getRoot($root));
        foreach ($this->getColumnPaths() as $path=>$descending) {
            $descending = $reverse ? !$descending : $descending;
            if (isset($fields[$path])) {
                list(,$field) = $fields[$path];
                $query = $field->applyOrderBy($query, $descending,
                    CustomQueue::getOrmPath($path, $query));
            }
        }
        return $query;
    }

    function getColumnPaths() {
        if (!isset($this->_columns)) {
            $columns = array();
            foreach (JsonDataParser::decode($this->columns) as $path) {
                if ($descending = $path[0] == '-')
                    $path = substr($path, 1);
                $columns[$path] = $descending;
            }
            $this->_columns = $columns;
        }
        return $this->_columns;
    }

    function getColumns() {
        $columns = array();
        $paths = $this->getColumnPaths();
        $everything = CustomQueue::getSearchableFields($this->getRoot());
        foreach ($paths as $p=>$descending) {
            if (isset($everything[$p])) {
                $columns[$p] = array($everything[$p], $descending);
            }
        }
        return $columns;
    }

    function getDataConfigForm($source=false) {
        return new QueueSortDataConfigForm($source ?: $this->getDbFields(),
            array('id' => $this->id));
    }

    static function forQueue(CustomQueue $queue) {
        return static::objects()->filter([
            'root' => $queue->root ?: 'T',
        ]);
    }

    function save($refetch=false) {
        if ($this->dirty)
            $this->updated = SqlFunction::NOW();
        return parent::save($refetch || $this->dirty);
    }

    function update($vars, &$errors=array()) {
        if (!isset($vars['name']))
            $errors['name'] = __('A title is required');

        $this->name = $vars['name'];
        if (isset($vars['root']))
            $this->root = $vars['root'];
        elseif (!isset($this->root))
            $this->root = 'T';

        $fields = CustomQueue::getSearchableFields($this->getRoot($vars['root']));
        $columns = array();
        if (@is_array($vars['columns'])) {
            foreach ($vars['columns']as $path=>$info) {
                $descending = (int) @$info['descending'];
                // TODO: Check if column is valid, stash in $columns
                if (!isset($fields[$path]))
                    continue;
                $columns[] = ($descending ? '-' : '') . $path;
            }
            $this->columns = JsonDataEncoder::encode($columns);
        }

        if (count($errors))
            return false;

        return $this->save();
    }

    static function __create($vars) {
        $c = new static($vars);
        $c->save();
        return $c;
    }
}

class QueueSortGlue
extends VerySimpleModel {
    static $meta = array(
        'table' => QUEUE_SORTING_TABLE,
        'pk' => array('sort_id', 'queue_id'),
        'joins' => array(
            'ordering' => array(
                'constraint' => array('sort_id' => 'QueueSort.id'),
            ),
            'queue' => array(
                'constraint' => array('queue_id' => 'CustomQueue.id'),
            ),
        ),
        'select_related' => array('ordering', 'queue'),
        'ordering' => array('sort'),
    );
}

class QueueSortGlueMIM
extends ModelInstanceManager {
    function getOrBuild($modelClass, $fields, $cache=true) {
        $m = parent::getOrBuild($modelClass, $fields, $cache);
        if ($m && $modelClass === 'QueueSortGlue') {
            // Instead, yield the QueueColumn instance with the local fields
            // in the association table as annotations
            $m = AnnotatedModel::wrap($m->ordering, $m, 'QueueSort');
        }
        return $m;
    }
}

class QueueSortListBroker
extends InstrumentedList {
    function __construct($fkey, $queryset=false) {
        parent::__construct($fkey, $queryset, 'QueueSortGlueMIM');
        $this->queryset->select_related('ordering');
    }

    function add($ordering, $glue=null, $php7_is_annoying=true) {
        $glue = $glue ?: new QueueSortGlue();
        $glue->ordering = $ordering;
        $anno = AnnotatedModel::wrap($ordering, $glue);
        parent::add($anno, false);
        return $anno;
    }
}

abstract class QueueColumnFilter {
    static $registry;

    static $id = null;
    static $desc = null;

    static function register($filter, $group) {
        if (!isset($filter::$id))
            throw new Exception('QueueColumnFilter must define $id');
        if (isset(static::$registry[$filter::$id]))
            throw new Exception($filter::$id
                . ': QueueColumnFilter already registered under that id');
        if (!is_subclass_of($filter, get_called_class()))
            throw new Exception('Filter must extend QueueColumnFilter');

        static::$registry[$filter::$id] = array($group, $filter);
    }

    static function getFilters() {
        $list = static::$registry;
        $base = array();
        foreach ($list as $id=>$stuff) {
            list($group, $class) = $stuff;
            $base[$group][$id] = __($class::$desc);
        }
        return $base;
    }

    static function getInstance($id) {
        if (isset(static::$registry[$id])) {
            list(, $class) = @static::$registry[$id];
            if ($class && class_exists($class))
                return new $class();
        }
    }

    function mangleQuery($query, $column) { return $query; }

    abstract function filter($value, $row);
}

class TicketLinkFilter
extends QueueColumnFilter {
    static $id = 'link:ticket';
    static $desc = /* @trans */ "Ticket Link";

    function filter($text, $row) {
        if ($link = $this->getLink($row))
            return sprintf('<a style="display:inline" href="%s">%s</a>', $link, $text);
    }

    function mangleQuery($query, $column) {
        static $fields = array(
            'link:ticket'   => 'ticket_id',
            'link:ticketP'  => 'ticket_id',
            'link:user'     => 'user_id',
            'link:org'      => 'user__org_id',
        );

        if (isset($fields[static::$id])) {
            $query = $query->values($fields[static::$id]);
        }
        return $query;
    }

    function getLink($row) {
        return Ticket::getLink($row['ticket_id']);
    }
}

class UserLinkFilter
extends TicketLinkFilter {
    static $id = 'link:user';
    static $desc = /* @trans */ "User Link";

    function getLink($row) {
        return User::getLink($row['user_id']);
    }
}

class OrgLinkFilter
extends TicketLinkFilter {
    static $id = 'link:org';
    static $desc = /* @trans */ "Organization Link";

    function getLink($row) {
        return Organization::getLink($row['user__org_id']);
    }
}
QueueColumnFilter::register('TicketLinkFilter', __('Link'));
QueueColumnFilter::register('UserLinkFilter', __('Link'));
QueueColumnFilter::register('OrgLinkFilter', __('Link'));

class TicketLinkWithPreviewFilter
extends TicketLinkFilter {
    static $id = 'link:ticketP';
    static $desc = /* @trans */ "Ticket Link with Preview";

    function filter($text, $row) {
        $link = $this->getLink($row);
        return sprintf('<a style="display: inline" class="preview" data-preview="#tickets/%d/preview" href="%s">%s</a>',
            $row['ticket_id'], $link, $text);
    }
}
QueueColumnFilter::register('TicketLinkWithPreviewFilter', __('Link'));

class DateTimeFilter
extends QueueColumnFilter {
    static $id = 'date:full';
    static $desc = /* @trans */ "Date and Time";

    function filter($text, $row) {
        return $text->changeTo(Format::datetime($text->value));
    }
}

class HumanizedDateFilter
extends QueueColumnFilter {
    static $id = 'date:human';
    static $desc = /* @trans */ "Relative Date and Time";

    function filter($text, $row) {
        return sprintf(
            '<time class="relative" datetime="%s" title="%s">%s</time>',
            date(DateTime::W3C, Misc::db2gmtime($text->value)),
            Format::daydatetime($text->value),
            Format::relativeTime(Misc::db2gmtime($text->value))
        );
    }
}
QueueColumnFilter::register('DateTimeFilter', __('Date Format'));
QueueColumnFilter::register('HumanizedDateFilter', __('Date Format'));

class QueueColDataConfigForm
extends AbstractForm {
    function buildFields() {
        return array(
            'primary' => new DataSourceField(array(
                'label' => __('Primary Data Source'),
                'required' => true,
                'configuration' => array(
                    'root' => 'Ticket',
                ),
                'layout' => new GridFluidCell(6),
            )),
            'secondary' => new DataSourceField(array(
                'label' => __('Secondary Data Source'),
                'configuration' => array(
                    'root' => 'Ticket',
                ),
                'layout' => new GridFluidCell(6),
            )),
            'name' => new TextboxField(array(
                'label' => __('Name'),
                'required' => true,
                'layout' => new GridFluidCell(4),
            )),
            'filter' => new ChoiceField(array(
                'label' => __('Filter'),
                'required' => false,
                'choices' => QueueColumnFilter::getFilters(),
                'layout' => new GridFluidCell(4),
            )),
            'truncate' => new ChoiceField(array(
                'label' => __('Text Overflow'),
                'choices' => array(
                    'wrap' => __("Wrap Lines"),
                    'ellipsis' => __("Add Ellipsis"),
                    'clip' => __("Clip Text"),
                    'lclip' => __("Clip Beginning Text"),
                ),
                'default' => 'wrap',
                'layout' => new GridFluidCell(4),
            )),
        );
    }
}

class QueueSortDataConfigForm
extends AbstractForm {
    function getInstructions() {
        return __('Add, and remove the fields in this list using the options below. Sorting can be performed on any field, whether displayed in the queue or not.');
    }

    function buildFields() {
        return array(
            'name' => new TextboxField(array(
                'required' => true,
                'layout' => new GridFluidCell(12),
                'translatable' => isset($this->options['id'])
                    ? _H('queuesort.name.'.$this->options['id']) : false,
                'configuration' => array(
                    'placeholder' => __('Sort Criteria Title'),
                ),
            )),
        );
    }
}