Manager::get_instance() - Code Metrics - Inspection of "Fixed wp.shortcode issue" - amarkal/amarkal-shortcode - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( be1b20...0523f1 )

by Askupa

created 2017-12-31 21:57 UTC

Manager::get_instance() A

↳ Parent: Manager

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	4
nc	2
nop	0
dl	0
loc	8
rs	9.4285
c	0
b	0
f	0

<?php

namespace Amarkal\Shortcode;

class Manager
{
    /**
     * @var Singleton The reference to *Singleton* instance of this class
     */
    private static $instance;
    
    /**
     * Undocumented variable
     *
     * @var array The list of registered shortcodes
     */
    private $shortcodes = array();
    
    /**
     * Returns the *Singleton* instance of this class.
     *
     * @return Singleton The *Singleton* instance.
     */
    public static function get_instance()
    {
        if( null === static::$instance ) 
class YourClass
{
    private static $someVariable;

    public static function getSomeVariable()
    {
        return static::$someVariable;
    }
}
        {
            static::$instance = new static();
class YourClass
{
    private static $someVariable;

    public static function getSomeVariable()
    {
        return static::$someVariable;
    }
}
        }
        return static::$instance;
class YourClass
{
    private static $someVariable;

    public static function getSomeVariable()
    {
        return static::$someVariable;
    }
}
    }
    
    /**
     * Register a shortcode 
     *
     * @param [array] $args

     * @return void
     */
    public function register_shortcode( $args )
    {
        $config = $this->prepare_config($args);

        if($this->shortcode_exists($args['id']))
        {
            throw new \RuntimeException("A shortcode with id '{$args['id']}' has already been registered");
        }

        $this->shortcodes[$args['id']] = $config;

        if($config['is_shortcode'])
        {
            $self = $this; // Needed for backward compatibility
            \add_shortcode( $args['id'], function($atts, $content = null) use ($args, $self) {
                // TODO: merge $atts with defaults using shortcode_atts()
                $atts['content'] = $content;
                return call_user_func_array($args['render'], array($self->decode_atts($atts)));
            });
        }
    }
    
    /**
     * Enqueue the shortcode script and print the JSON object
     *
     * @param [array] $plugins_array

     * @return void
     */
    public function enqueue_script($plugins_array)
    {
        // Printing the JSON object ensures that it will be available whenever 
        // the visual editor is present.
        echo "<script id='amarkal-shortcode-json' type='application/json'>{$this->prepare_json_object()}</script>";
        
        // This script must be included after the JSON object, since it refers
        // to it, and so the JSON must be readily available.
        $plugins_array['amarkal_shortcode'] = \Amarkal\Core\Utility::path_to_url(__DIR__.'/assets/js/dist/amarkal-shortcode.min.js');
        return $plugins_array;
    }

    /**
     * Enqueue the necessary styles & scripts
     *
     * @return void
     */
    public function enqueue_scripts()
    {
        \wp_enqueue_script('shortcode'); // Needed for wp.shortcode

        /**
         * Enqueue the popup stylesheet. This needs to be separated from the editor
         * stylesheet since it is not part of the editor.
         */
        \wp_enqueue_style('amarkal-shortcode',\Amarkal\Core\Utility::path_to_url(__DIR__.'/assets/css/dist/amarkal-shortcode-popup.min.css'));
    }

    /**
     * Enqueue the editor stylesheet.
     *
     * @return void
     */
    public function enqueue_editor_style()
    {
        \add_editor_style(\Amarkal\Core\Utility::path_to_url(__DIR__.'/assets/css/dist/amarkal-shortcode-editor.min.css'));
    }

    public function decode_atts($atts)
    {
        $decoded_atts = array();
        
        // Attributes are JSON encoded and then URL encoded in the shortcode editor, so
        // we need to reverse that
        foreach($atts as $name => $value)
        {
            $decoded_atts[$name] = $this->decode_att($value);
        }
        return $decoded_atts;
    }

    private function decode_att($value)
    {
        $decoded = \json_decode(\urldecode($value));
        
        // If the value is null, it is most likely because the attribute is not JSON encoded.
        // We return the uncoded value for backward compatibility, where attributes are not JSON encoded.
        if(null === $decoded) {
            $decoded = $this->decode_non_json_encodede_att($value);
        }

        return $decoded;
    }

    private function decode_non_json_encodede_att($value)
    {
        if(false !== \strpos($value, ',')) {
            return \explode(',', $value);
        }
        return $value;
    }
    
    /**
     * Create a JSON object that will be printed in the admin section
     * to be used by the TinyMCE plugin code.
     */
    private function prepare_json_object()
    {
        $json = array();
        foreach($this->shortcodes as $id => $shortcode)
        {
            $popup = new Popup($shortcode);
            $json[$id] = $shortcode;
            $json[$id]['html'] = $popup->render();
        }
        return json_encode($json);
    }
    
    /**
     * Default shortcode arguments
     */
    private function default_args()
    {
        return array(
            'id'                => null,
            'title'             => '',
            'template'          => null,
            'cmd'               => '',
            'width'             => 550,
            'height'            => 450,
            'render'            => function(){},
            'fields'            => array(),
            'is_shortcode'      => true,
            'show_placeholder'  => true,
            'placeholder_class' => null,
            'placeholder_icon'  => null,
            'placeholder_subtitle' => null
        );
    }
    
    /**
     * Check if a shortcode with the given ID has already been registered
     */
    private function shortcode_exists( $id )
    {
        return array_key_exists($id, $this->shortcodes);
    }
    
    /**
     * Validate that the provided arguments have the required arguments as
     * specified in self::required_args()
     */
    private function validate_args( $args )
    {
        foreach($this->required_args() as $arg)
        {
            if(!array_key_exists($arg, $args))
            {
                throw new \RuntimeException("Missing required argument '$arg'");
            }
        }
    }

    /**
     * Prepare a shortcode configuration array based on the given arguments
     *
     * @param [array] $args

     * @return array
     */
    private function prepare_config( $args )
    {
        $this->validate_args($args);
        $config = array_merge($this->default_args(), $args);

        if($config['template'] === null)
        {
            $config['template'] = $this->generate_template($config['id'],$config['fields']);
        }

        return $config;
    }

    /**
     * Genereate a basic shortcode template based on the given set 
     * of shortcode fields.
     *
     * @param [string] $tag

     * @param [array] $fields

     * @return string
     */
    private function generate_template($tag, $fields)
    {
        $template = "[$tag";
        $self_enclosing = true;

        foreach($fields as $field)
        {
            $name = $field['name'];
            if('content' !== $name)
            {
                $template .= " $name=\"{{{$name}}}\"";
            }
            else $self_enclosing = false;
        }

        if($self_enclosing)
        {
            $template .= "/]";
        }
        else {
            $template .= "]{{content}}[/$tag]";
        }
        
        return "<p>$template</p>";
    }
    
    /**
     * A list of required arguments
     */
    private function required_args()
    {
        return array('id','title','fields');
    }

    /**
     * Private constructor to prevent instantiation
     */
    private function __construct() 
    {
        \add_filter('mce_external_plugins',array($this,'enqueue_script'));
        \add_action('admin_init', array($this,'enqueue_editor_style'));
        \add_action('admin_enqueue_scripts', array($this,'enqueue_scripts'));
        \add_action('wp_enqueue_scripts', array($this,'enqueue_scripts'));
    }
}

1			<?php
2
3			namespace Amarkal\Shortcode;
4
5			class Manager
6			{
7			/**
8			* @var Singleton The reference to Singleton instance of this class
9			*/
10			private static $instance;
11
12			/**
13			* Undocumented variable
14			*
15			* @var array The list of registered shortcodes
16			*/
17			private $shortcodes = array();
18
19			/**
20			* Returns the Singleton instance of this class.
21			*
22			* @return Singleton The Singleton instance.
23			*/
24			public static function get_instance()
25			{
26			if( null === static::$instance )
			0 ignored issues – show Bug introduced 2017-07-06 22:41 UTC by Report Bug Copy Issue Report Since `$instance` is declared private, accessing it with `static` will lead to errors in possible sub-classes; consider using `self`, or increasing the visibility of `$instance` to at least protected. Let’s assume you have a class which uses late-static binding: class YourClass { private static $someVariable; public static function getSomeVariable() { return static::$someVariable; } } The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the `getSomeVariable()` on that sub-class, you will receive a runtime error: class YourSubClass extends YourClass { } YourSubClass::getSomeVariable(); // Will cause an access error. In the case above, it makes sense to update `SomeClass` to use `self` instead: class SomeClass { private static $someVariable; public static function getSomeVariable() { return self::$someVariable; // self works fine with private. } } Loading history...
27			{
28			static::$instance = new static();
			0 ignored issues – show Bug introduced 2017-07-06 22:41 UTC by Report Bug Copy Issue Report Since `$instance` is declared private, accessing it with `static` will lead to errors in possible sub-classes; consider using `self`, or increasing the visibility of `$instance` to at least protected. Let’s assume you have a class which uses late-static binding: class YourClass { private static $someVariable; public static function getSomeVariable() { return static::$someVariable; } } The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the `getSomeVariable()` on that sub-class, you will receive a runtime error: class YourSubClass extends YourClass { } YourSubClass::getSomeVariable(); // Will cause an access error. In the case above, it makes sense to update `SomeClass` to use `self` instead: class SomeClass { private static $someVariable; public static function getSomeVariable() { return self::$someVariable; // self works fine with private. } } Loading history... Documentation Bug introduced 2017-07-06 22:41 UTC by Report Bug Copy Issue Report It seems like `new static()` of type `this<Amarkal\Shortcode\Manager>` is incompatible with the declared type `object<Amarkal\Shortcode\Singleton>` of property `$instance`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
29			}
30			return static::$instance;
			0 ignored issues – show Bug introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report Since `$instance` is declared private, accessing it with `static` will lead to errors in possible sub-classes; consider using `self`, or increasing the visibility of `$instance` to at least protected. Let’s assume you have a class which uses late-static binding: class YourClass { private static $someVariable; public static function getSomeVariable() { return static::$someVariable; } } The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the `getSomeVariable()` on that sub-class, you will receive a runtime error: class YourSubClass extends YourClass { } YourSubClass::getSomeVariable(); // Will cause an access error. In the case above, it makes sense to update `SomeClass` to use `self` instead: class SomeClass { private static $someVariable; public static function getSomeVariable() { return self::$someVariable; // self works fine with private. } } Loading history... Bug Compatibility introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report The expression `static::$instance;` of type `Amarkal\Shortcode\Manage...kal\Shortcode\Singleton` adds the type `Amarkal\Shortcode\Manager` to the return on line 30 which is incompatible with the return type documented by `Amarkal\Shortcode\Manager::get_instance` of type `Amarkal\Shortcode\Singleton`. Loading history...
31			}
32
33			/**
34			* Register a shortcode
35			*
36			* @param [array] $args
			0 ignored issues – show Documentation introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report The doc-type `[array]` could not be parsed: Unknown type name "" at position 0. [(view supported doc-types) This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types. Loading history...
37			* @return void
38			*/
39			public function register_shortcode( $args )
40			{
41			$config = $this->prepare_config($args);
42
43			if($this->shortcode_exists($args['id']))
44			{
45			throw new \RuntimeException("A shortcode with id '{$args['id']}' has already been registered");
46			}
47
48			$this->shortcodes[$args['id']] = $config;
49
50			if($config['is_shortcode'])
51			{
52			$self = $this; // Needed for backward compatibility
53			\add_shortcode( $args['id'], function($atts, $content = null) use ($args, $self) {
54			// TODO: merge $atts with defaults using shortcode_atts()
55			$atts['content'] = $content;
56			return call_user_func_array($args['render'], array($self->decode_atts($atts)));
57			});
58			}
59			}
60
61			/**
62			* Enqueue the shortcode script and print the JSON object
63			*
64			* @param [array] $plugins_array
			0 ignored issues – show Documentation introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report The doc-type `[array]` could not be parsed: Unknown type name "" at position 0. [(view supported doc-types) This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types. Loading history...
65			* @return void
66			*/
67			public function enqueue_script($plugins_array)
68			{
69			// Printing the JSON object ensures that it will be available whenever
70			// the visual editor is present.
71			echo "<script id='amarkal-shortcode-json' type='application/json'>{$this->prepare_json_object()}</script>";
72
73			// This script must be included after the JSON object, since it refers
74			// to it, and so the JSON must be readily available.
75			$plugins_array['amarkal_shortcode'] = \Amarkal\Core\Utility::path_to_url(__DIR__.'/assets/js/dist/amarkal-shortcode.min.js');
76			return $plugins_array;
77			}
78
79			/**
80			* Enqueue the necessary styles & scripts
81			*
82			* @return void
83			*/
84			public function enqueue_scripts()
85			{
86			\wp_enqueue_script('shortcode'); // Needed for wp.shortcode
87
88			/**
89			* Enqueue the popup stylesheet. This needs to be separated from the editor
90			* stylesheet since it is not part of the editor.
91			*/
92			\wp_enqueue_style('amarkal-shortcode',\Amarkal\Core\Utility::path_to_url(__DIR__.'/assets/css/dist/amarkal-shortcode-popup.min.css'));
93			}
94
95			/**
96			* Enqueue the editor stylesheet.
97			*
98			* @return void
99			*/
100			public function enqueue_editor_style()
101			{
102			\add_editor_style(\Amarkal\Core\Utility::path_to_url(__DIR__.'/assets/css/dist/amarkal-shortcode-editor.min.css'));
103			}
104
105			public function decode_atts($atts)
106			{
107			$decoded_atts = array();
108
109			// Attributes are JSON encoded and then URL encoded in the shortcode editor, so
110			// we need to reverse that
111			foreach($atts as $name => $value)
112			{
113			$decoded_atts[$name] = $this->decode_att($value);
114			}
115			return $decoded_atts;
116			}
117
118			private function decode_att($value)
119			{
120			$decoded = \json_decode(\urldecode($value));
121
122			// If the value is null, it is most likely because the attribute is not JSON encoded.
123			// We return the uncoded value for backward compatibility, where attributes are not JSON encoded.
124			if(null === $decoded) {
125			$decoded = $this->decode_non_json_encodede_att($value);
126			}
127
128			return $decoded;
129			}
130
131			private function decode_non_json_encodede_att($value)
132			{
133			if(false !== \strpos($value, ',')) {
134			return \explode(',', $value);
135			}
136			return $value;
137			}
138
139			/**
140			* Create a JSON object that will be printed in the admin section
141			* to be used by the TinyMCE plugin code.
142			*/
143			private function prepare_json_object()
144			{
145			$json = array();
146			foreach($this->shortcodes as $id => $shortcode)
147			{
148			$popup = new Popup($shortcode);
149			$json[$id] = $shortcode;
150			$json[$id]['html'] = $popup->render();
151			}
152			return json_encode($json);
153			}
154
155			/**
156			* Default shortcode arguments
157			*/
158			private function default_args()
159			{
160			return array(
161			'id' => null,
162			'title' => '',
163			'template' => null,
164			'cmd' => '',
165			'width' => 550,
166			'height' => 450,
167			'render' => function(){},
168			'fields' => array(),
169			'is_shortcode' => true,
170			'show_placeholder' => true,
171			'placeholder_class' => null,
172			'placeholder_icon' => null,
173			'placeholder_subtitle' => null
174			);
175			}
176
177			/**
178			* Check if a shortcode with the given ID has already been registered
179			*/
180			private function shortcode_exists( $id )
181			{
182			return array_key_exists($id, $this->shortcodes);
183			}
184
185			/**
186			* Validate that the provided arguments have the required arguments as
187			* specified in self::required_args()
188			*/
189			private function validate_args( $args )
190			{
191			foreach($this->required_args() as $arg)
192			{
193			if(!array_key_exists($arg, $args))
194			{
195			throw new \RuntimeException("Missing required argument '$arg'");
196			}
197			}
198			}
199
200			/**
201			* Prepare a shortcode configuration array based on the given arguments
202			*
203			* @param [array] $args
			0 ignored issues – show Documentation introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report The doc-type `[array]` could not be parsed: Unknown type name "" at position 0. [(view supported doc-types) This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types. Loading history...
204			* @return array
205			*/
206			private function prepare_config( $args )
207			{
208			$this->validate_args($args);
209			$config = array_merge($this->default_args(), $args);
210
211			if($config['template'] === null)
212			{
213			$config['template'] = $this->generate_template($config['id'],$config['fields']);
214			}
215
216			return $config;
217			}
218
219			/**
220			* Genereate a basic shortcode template based on the given set
221			* of shortcode fields.
222			*
223			* @param [string] $tag
			0 ignored issues – show Documentation introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report The doc-type `[string]` could not be parsed: Unknown type name "" at position 0. [(view supported doc-types) This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types. Loading history...
224			* @param [array] $fields
			0 ignored issues – show Documentation introduced 2017-07-11 12:36 UTC by Report Bug Copy Issue Report The doc-type `[array]` could not be parsed: Unknown type name "" at position 0. [(view supported doc-types) This check marks PHPDoc comments that could not be parsed by our parser. To see which comment annotations we can parse, please refer to our documentation on supported doc-types. Loading history...
225			* @return string
226			*/
227			private function generate_template($tag, $fields)
228			{
229			$template = "[$tag";
230			$self_enclosing = true;
231
232			foreach($fields as $field)
233			{
234			$name = $field['name'];
235			if('content' !== $name)
236			{
237			$template .= " $name=\"{{{$name}}}\"";
238			}
239			else $self_enclosing = false;
240			}
241
242			if($self_enclosing)
243			{
244			$template .= "/]";
245			}
246			else {
247			$template .= "]{{content}}[/$tag]";
248			}
249
250			return "<p>$template</p>";
251			}
252
253			/**
254			* A list of required arguments
255			*/
256			private function required_args()
257			{
258			return array('id','title','fields');
259			}
260
261			/**
262			* Private constructor to prevent instantiation
263			*/
264			private function __construct()
265			{
266			\add_filter('mce_external_plugins',array($this,'enqueue_script'));
267			\add_action('admin_init', array($this,'enqueue_editor_style'));
268			\add_action('admin_enqueue_scripts', array($this,'enqueue_scripts'));
269			\add_action('wp_enqueue_scripts', array($this,'enqueue_scripts'));
270			}
271			}

amarkal / amarkal-shortcode

Push — master ( be1b20...0523f1 )

Manager::get_instance() A

Complexity

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Duplication

Importance

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