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<?php
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namespace Seufert\Hamle;
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use Seufert\Hamle\Exception\OutOfScope;
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use Seufert\Hamle\Exception\Unsupported;
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use Seufert\Hamle\Exception\RunTime;
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use Seufert\Hamle\Model;
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/**
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* HAMLE Controller/Model Scope Handler
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*
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* @author Chris Seufert <[email protected]>
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*/
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class Scope {
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/** @var Model[] Array of Models by Scope Order */
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static $scopes = array();
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/** @var Model[] Assoc array of Models by Scope Name */
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static $namedScopes = array();
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static function add($model, $name = null) {
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if (!$model instanceOf Model)
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throw new Unsupported("Unsupported Model (".get_class($model)."), Needs to implement hamleModel Interface");
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if ($name)
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self::$namedScopes[$name] = $model;
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else
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self::$scopes[] = $model;
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}
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static function done() {
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array_pop(self::$scopes);
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}
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/**
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* Get arbitary scope
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* 0 = current
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* negative vals = back form here, -1 = last, -2 one before last, etc
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* positive vals = absolute position, 1 = first, 2 = second, etc
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* @param int $id ID of scope to get
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* @return Model
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* @throws OutOfScope
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*/
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static function get($id = 0) {
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if (0 == $id) {
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if ($scope = end(self::$scopes))
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return $scope;
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throw new OutOfScope("Unable to find Scope ($id)");
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}
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$key = $id - 1;
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if ($id < 0) $key = count(self::$scopes) + $id - 1;
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if ($id == 0) $key = count(self::$scopes) - 1;
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if (!isset(self::$scopes[$key]))
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throw new OutOfScope("Unable to find Scope ($id) or $key");
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return self::$scopes[$key];
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}
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static function getTopScope() {
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return end(self::$scopes);
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}
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static function getDepth() {
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return count(self::$scopes);
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}
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static $returnZeroOnNoScope = false;
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static function getName($name) {
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if ($name && isset(self::$namedScopes[$name])) {
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self::$namedScopes[$name]->rewind();
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return self::$namedScopes[$name];
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} else
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if(self::$returnZeroOnNoScope)
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return new Model\Zero();
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throw new RunTime("Unable to find scope ($name)");
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}
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}
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cseufert /
hamle
