ViewBuilder::getEngine() - Code Metrics - Inspection of "Update change log." - brightnucleus/view - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 4ac39c...ddccf7 )

by Alain

created 2016-05-30 18:47 UTC

ViewBuilder::getEngine() A

↳ Parent: ViewBuilder

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
ccs	2
cts	2
cp	1
rs	10
cc	1
eloc	2
nc	1
nop	1
crap	1

<?php
/**
 * Bright Nucleus View Component.
 *
 * @package   BrightNucleus\View
 * @author    Alain Schlesser <[email protected]>
 * @license   MIT
 * @link      http://www.brightnucleus.com/
 * @copyright 2016 Alain Schlesser, Bright Nucleus
 */

namespace BrightNucleus\View;

use BrightNucleus\Config\ConfigInterface;
use BrightNucleus\Config\ConfigTrait;
use BrightNucleus\Config\Exception\FailedToProcessConfigException;
use BrightNucleus\View\Engine\EngineFinderInterface;
use BrightNucleus\View\Engine\EngineInterface;
use BrightNucleus\View\Engine\ViewFinderInterface;
use BrightNucleus\View\Exception\FailedToInstantiateViewException;
use BrightNucleus\View\Location\LocationCollection;
use BrightNucleus\View\Location\LocationInterface;
use BrightNucleus\View\Support\FinderInterface;
use BrightNucleus\View\View\ViewInterface;

/**
 * Class ViewBuilder.
 *
 * @since   0.1.0
 *
 * @package BrightNucleus\View
 * @author  Alain Schlesser <[email protected]>
 */
class ViewBuilder
{

    use ConfigTrait;

    const ENGINE_FINDER_KEY = 'EngineFinder';
    const VIEW_FINDER_KEY   = 'ViewFinder';

    /**
     * ViewFinder instance.
     *
     * @since 0.1.0
     *
     * @var ViewFinderInterface
     */
    protected $viewFinder;

    /**
     * EngineFinder instance.
     *
     * @since 0.1.0
     *
     * @var EngineFinderInterface
     */
    protected $engineFinder;

    /**
     * Locations to scan for views.
     *
     * @since 0.1.0
     *
     * @var LocationCollection
     */
    protected $locations;

    /**
     * Instantiate a ViewBuilder object.
     *
     * @since 0.1.0
     *
     * @param ConfigInterface            $config       Configuration settings.
     * @param ViewFinderInterface|null   $viewFinder   ViewFinder instance.
     * @param EngineFinderInterface|null $engineFinder EngineFinder instance.
     *
     * @throws FailedToProcessConfigException If the config could not be processed.
     */
    public function __construct(
        ConfigInterface $config,
        ViewFinderInterface $viewFinder = null,
        EngineFinderInterface $engineFinder = null
    ) {
        $this->processConfig($config);
        $this->viewFinder   = $viewFinder;
        $this->engineFinder = $engineFinder;
        $this->locations    = new LocationCollection();
    }

    /**
     * Create a new view for a given URI.
     *
     * @since 0.1.0
     *
     * @param string $view View identifier to create a view for.
     * @param mixed  $type Type of view to create.
     *
     * @return ViewInterface Instance of the requested view.
     */
    public function create($view, $type = null)
    {
        $uri    = $this->scanLocations([$view]);
        $engine = $this->getEngine($uri);

        return $uri
            ? $this->getView($uri, $engine, $type)
            : $this->getViewFinder()->getNullObject();
    }

    /**
     * Get an Engine that can deal with the given URI.
     *
     * @since 0.1.0
     *
     * @param string|false $uri URI to get an engine for.
     *
     * @return EngineInterface Instance of an engine that can deal with the given URI.
     */
    public function getEngine($uri)
    {
        return $this->getEngineFinder()->find([$uri]);
    }

    /**
     * Get a view for a given URI, engine and type.
     *
     * @since 0.1.0
     *
     * @param string          $uri    URI to get a view for.
     * @param EngineInterface $engine Engine to use for the view.
     * @param mixed           $type   Type of view to get.
     *
     * @return ViewInterface View that matches the given requirements.
     */
    public function getView($uri, EngineInterface $engine, $type = null)
    {
        if (null === $type) {
            return $this->getViewFinder()->find([$uri], $engine);
        }

        return $this->resolveType($type, $uri, $engine);
    }

    /**
     * Get the ViewFinder instance.
     *
     * @since 0.1.0
     *
     * @return ViewFinderInterface Instance of a ViewFinder.
     */
    public function getViewFinder()
    {
        return $this->getFinder($this->viewFinder, static::VIEW_FINDER_KEY);
    }

    /**
     * Get the EngineFinder instance.
     *
     * @since 0.1.0
     *
     * @return EngineFinderInterface Instance of a EngineFinder.
     */
    public function getEngineFinder()
    {
        return $this->getFinder($this->engineFinder, static::ENGINE_FINDER_KEY);
    }

    /**
     * Add a location to scan with the ViewFinder.
     *
     * @since 0.1.0
     *
     * @param LocationInterface $location Location to scan with the ViewFinder.
     */
    public function addLocation(LocationInterface $location)
    {
        $this->locations->add($location);
    }

    /**
     * Get the collection of locations registered with this ViewBuilder.
     *
     * @since 0.1.3
     *
     * @return LocationCollection Collection of locations.
     */
    public function getLocations()
    {
        return $this->locations;
    }

    /**
     * Scan Locations for an URI that matches the specified criteria.
     *
     * @since 0.1.0
     *
     * @param array $criteria Criteria to match.
     *
     * @return string|false URI of the requested view, or false if not found.
     */
    public function scanLocations(array $criteria)
    {
        $uris = $this->locations->map(function ($location) use ($criteria) {
            /** @var LocationInterface $location */
            return $location->getURI($criteria);
        })->filter(function ($uri) {
            return false !== $uri;
        });

        return $uris->count() > 0 ? $uris->first() : false;
    }

    /**
     * Get a finder instance.
     *
     * @since 0.1.1
     *
     * @param mixed  $property Property to use.
     * @param string $key      Configuration key to use.
     *
     * @return FinderInterface The requested finder instance.
     */
    protected function getFinder(&$property, $key)
    {
        if (null === $property) {
            $engineFinderClass = $this->config->getKey($key, 'ClassName');
            $property          = new $engineFinderClass($this->config->getSubConfig($key));
        }

        return $property;
    }

    /**
     * Resolve the view type.
     *
     * @since 0.1.0
     *
     * @param mixed                $type   Type of view that was requested.
     * @param string               $uri    URI to get a view for.
     * @param EngineInterface|null $engine Engine to use for the view.
     *
     * @return ViewInterface Resolved View object.
     * @throws FailedToInstantiateViewException If the view type could not be resolved.
     */
    protected function resolveType($type, $uri, EngineInterface $engine = null)
    {
        $configKey = [static::VIEW_FINDER_KEY, 'Views', $type];

        if (is_string($type) && $this->config->hasKey($configKey)) {
            $className = $this->config->getKey($configKey);
            $type      = new $className($uri, $engine);
        }

        if (is_string($type)) {
            $type = new $type($uri, $engine);
        }

        if (is_callable($type)) {
            $type = $type($uri, $engine);
        }

        if (! $type instanceof ViewInterface) {
            throw new FailedToInstantiateViewException(
                sprintf(
                    _('Could not instantiate view "%s".'),
                    serialize($type)
                )
            );
        }

        return $type;
    }
}


1		<?php
2		/**
3		* Bright Nucleus View Component.
4		*
5		* @package BrightNucleus\View
6		* @author Alain Schlesser <[email protected]>
7		* @license MIT
8		* @link http://www.brightnucleus.com/
9		* @copyright 2016 Alain Schlesser, Bright Nucleus
10		*/
11
12		namespace BrightNucleus\View;
13
14		use BrightNucleus\Config\ConfigInterface;
15		use BrightNucleus\Config\ConfigTrait;
16		use BrightNucleus\Config\Exception\FailedToProcessConfigException;
17		use BrightNucleus\View\Engine\EngineFinderInterface;
18		use BrightNucleus\View\Engine\EngineInterface;
19		use BrightNucleus\View\Engine\ViewFinderInterface;
20		use BrightNucleus\View\Exception\FailedToInstantiateViewException;
21		use BrightNucleus\View\Location\LocationCollection;
22		use BrightNucleus\View\Location\LocationInterface;
23		use BrightNucleus\View\Support\FinderInterface;
24		use BrightNucleus\View\View\ViewInterface;
25
26		/**
27		* Class ViewBuilder.
28		*
29		* @since 0.1.0
30		*
31		* @package BrightNucleus\View
32		* @author Alain Schlesser <[email protected]>
33		*/
34		class ViewBuilder
35		{
36
37		use ConfigTrait;
38
39		const ENGINE_FINDER_KEY = 'EngineFinder';
40		const VIEW_FINDER_KEY = 'ViewFinder';
41
42		/**
43		* ViewFinder instance.
44		*
45		* @since 0.1.0
46		*
47		* @var ViewFinderInterface
48		*/
49		protected $viewFinder;
50
51		/**
52		* EngineFinder instance.
53		*
54		* @since 0.1.0
55		*
56		* @var EngineFinderInterface
57		*/
58		protected $engineFinder;
59
60		/**
61		* Locations to scan for views.
62		*
63		* @since 0.1.0
64		*
65		* @var LocationCollection
66		*/
67		protected $locations;
68
69		/**
70		* Instantiate a ViewBuilder object.
71		*
72		* @since 0.1.0
73		*
74		* @param ConfigInterface $config Configuration settings.
75		* @param ViewFinderInterface\|null $viewFinder ViewFinder instance.
76		* @param EngineFinderInterface\|null $engineFinder EngineFinder instance.
77		*
78		* @throws FailedToProcessConfigException If the config could not be processed.
79		*/
80	10	public function __construct(
81		ConfigInterface $config,
82		ViewFinderInterface $viewFinder = null,
83		EngineFinderInterface $engineFinder = null
84		) {
85	10	$this->processConfig($config);
86	10	$this->viewFinder = $viewFinder;
87	10	$this->engineFinder = $engineFinder;
88	10	$this->locations = new LocationCollection();
89	10	}
90
91		/**
92		* Create a new view for a given URI.
93		*
94		* @since 0.1.0
95		*
96		* @param string $view View identifier to create a view for.
97		* @param mixed $type Type of view to create.
98		*
99		* @return ViewInterface Instance of the requested view.
100		*/
101	24	public function create($view, $type = null)
102		{
103	24	$uri = $this->scanLocations([$view]);
104	24	$engine = $this->getEngine($uri);
105
106	24	return $uri
107	23	? $this->getView($uri, $engine, $type)
108	24	: $this->getViewFinder()->getNullObject();
109		}
110
111		/**
112		* Get an Engine that can deal with the given URI.
113		*
114		* @since 0.1.0
115		*
116		* @param string\|false $uri URI to get an engine for.
117		*
118		* @return EngineInterface Instance of an engine that can deal with the given URI.
119		*/
120	24	public function getEngine($uri)
121		{
122	24	return $this->getEngineFinder()->find([$uri]);
123		}
124
125		/**
126		* Get a view for a given URI, engine and type.
127		*
128		* @since 0.1.0
129		*
130		* @param string $uri URI to get a view for.
131		* @param EngineInterface $engine Engine to use for the view.
132		* @param mixed $type Type of view to get.
133		*
134		* @return ViewInterface View that matches the given requirements.
135		*/
136	23	public function getView($uri, EngineInterface $engine, $type = null)
137		{
138	23	if (null === $type) {
139	23	return $this->getViewFinder()->find([$uri], $engine);
140		}
141
142		return $this->resolveType($type, $uri, $engine);
143		}
144
145		/**
146		* Get the ViewFinder instance.
147		*
148		* @since 0.1.0
149		*
150		* @return ViewFinderInterface Instance of a ViewFinder.
151		*/
152	24	public function getViewFinder()
153		{
154	24	return $this->getFinder($this->viewFinder, static::VIEW_FINDER_KEY);
155		}
156
157		/**
158		* Get the EngineFinder instance.
159		*
160		* @since 0.1.0
161		*
162		* @return EngineFinderInterface Instance of a EngineFinder.
163		*/
164	24	public function getEngineFinder()
165		{
166	24	return $this->getFinder($this->engineFinder, static::ENGINE_FINDER_KEY);
167		}
168
169		/**
170		* Add a location to scan with the ViewFinder.
171		*
172		* @since 0.1.0
173		*
174		* @param LocationInterface $location Location to scan with the ViewFinder.
175		*/
176	24	public function addLocation(LocationInterface $location)
177		{
178	24	$this->locations->add($location);
179	24	}
180
181		/**
182		* Get the collection of locations registered with this ViewBuilder.
183		*
184		* @since 0.1.3
185		*
186		* @return LocationCollection Collection of locations.
187		*/
188		public function getLocations()
189		{
190		return $this->locations;
191		}
192
193		/**
194		* Scan Locations for an URI that matches the specified criteria.
195		*
196		* @since 0.1.0
197		*
198		* @param array $criteria Criteria to match.
199		*
200		* @return string\|false URI of the requested view, or false if not found.
201		*/
202	24	public function scanLocations(array $criteria)
203		{
204		$uris = $this->locations->map(function ($location) use ($criteria) {
205		/** @var LocationInterface $location */
206	24	return $location->getURI($criteria);
207	24	})->filter(function ($uri) {
208	24	return false !== $uri;
209	24	});
210
211	24	return $uris->count() > 0 ? $uris->first() : false;
212		}
213
214		/**
215		* Get a finder instance.
216		*
217		* @since 0.1.1
218		*
219		* @param mixed $property Property to use.
220		* @param string $key Configuration key to use.
221		*
222		* @return FinderInterface The requested finder instance.
223		*/
224	24	protected function getFinder(&$property, $key)
225		{
226	24	if (null === $property) {
227	10	$engineFinderClass = $this->config->getKey($key, 'ClassName');
228	10	$property = new $engineFinderClass($this->config->getSubConfig($key));
229		}
230
231	24	return $property;
232		}
233
234		/**
235		* Resolve the view type.
236		*
237		* @since 0.1.0
238		*
239		* @param mixed $type Type of view that was requested.
240		* @param string $uri URI to get a view for.
241		* @param EngineInterface\|null $engine Engine to use for the view.
242		*
243		* @return ViewInterface Resolved View object.
244		* @throws FailedToInstantiateViewException If the view type could not be resolved.
245		*/
246		protected function resolveType($type, $uri, EngineInterface $engine = null)
247		{
248		$configKey = [static::VIEW_FINDER_KEY, 'Views', $type];
249
250		if (is_string($type) && $this->config->hasKey($configKey)) {
251		$className = $this->config->getKey($configKey);
252		$type = new $className($uri, $engine);
253		}
254
255		if (is_string($type)) {
256		$type = new $type($uri, $engine);
257		}
258
259		if (is_callable($type)) {
260		$type = $type($uri, $engine);
261		}
262
263		if (! $type instanceof ViewInterface) {
264		throw new FailedToInstantiateViewException(
265		sprintf(
266		_('Could not instantiate view "%s".'),
267		serialize($type)
268		)
269		);
270		}
271
272		return $type;
273		}
274		}
275

brightnucleus / view

Push — master ( 4ac39c...ddccf7 )

ViewBuilder::getEngine() A

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