Complex classes like pQuery often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use pQuery, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 15 | class pQuery implements ArrayAccess, IteratorAggregate, IQuery { |
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| 16 | /// Properties /// |
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| 17 | |||
| 18 | /** |
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| 19 | * @var IQuery[] |
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| 20 | */ |
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| 21 | protected $nodes = array(); |
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| 22 | |||
| 23 | /// Methods /// |
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| 24 | |||
| 25 | 25 | public function __construct($nodes = array()) { |
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| 28 | |||
| 29 | 2 | public function addClass($classname) { |
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| 30 | 2 | foreach ($this->nodes as $node) { |
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| 31 | $node->addClass($classname); |
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| 32 | } |
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| 33 | 2 | return $this; |
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| 34 | } |
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| 35 | |||
| 36 | 1 | public function after($content) { |
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| 37 | 1 | foreach ($this->nodes as $node) { |
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| 38 | $node->after($content); |
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| 39 | } |
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| 40 | 1 | return $this; |
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| 41 | } |
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| 42 | |||
| 43 | 1 | public function append($content) { |
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| 44 | 1 | foreach ($this->nodes as $node) { |
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| 45 | $node->append($content); |
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| 46 | } |
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| 47 | 1 | return $this; |
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| 48 | } |
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| 49 | |||
| 50 | 3 | public function attr($name, $value = null) { |
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| 51 | 3 | if (empty($this->nodes) && $value === null) |
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| 52 | 1 | return ''; |
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| 53 | |||
| 54 | 3 | foreach ($this->nodes as $node) { |
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| 55 | 2 | if ($value === null) |
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| 56 | return $node->attr($name); |
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| 57 | $node->attr($name, $value); |
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| 58 | 2 | } |
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| 59 | 1 | return $this; |
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| 60 | 2 | } |
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| 61 | |||
| 62 | 1 | public function before($content) { |
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| 63 | 1 | foreach ($this->nodes as $node) { |
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| 64 | $node->before($content); |
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| 65 | } |
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| 66 | 1 | return $this; |
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| 67 | } |
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| 68 | |||
| 69 | public function clear() { |
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| 70 | foreach ($this->nodes as $node) { |
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| 71 | $node->clear(); |
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| 72 | } |
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| 73 | return $this; |
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| 74 | } |
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| 75 | |||
| 76 | /** |
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| 77 | * Get the count of matched elements. |
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| 78 | * |
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| 79 | * @return int Returns the count of matched elements. |
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| 80 | */ |
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| 81 | 7 | public function count() { |
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| 82 | 7 | return count($this->nodes); |
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| 83 | } |
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| 84 | |||
| 85 | /** |
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| 86 | * Format/beautify a DOM. |
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| 87 | * |
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| 88 | * @param pQuery\DomNode $dom The dom to format. |
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| 89 | * @param array $options Extra formatting options. See {@link pQuery\HtmlFormatter::$options}. |
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| 90 | * @return bool Returns `true` on sucess and `false` on failure. |
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| 91 | */ |
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| 92 | // public static function format($dom, $options = array()) { |
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| 93 | // $formatter = new pQuery\HtmlFormatter($options); |
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| 94 | // return $formatter->format($dom); |
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| 95 | // } |
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| 96 | |||
| 97 | public function getIterator() { |
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| 98 | return new ArrayIterator($this->nodes); |
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| 99 | } |
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| 100 | |||
| 101 | 1 | public function hasClass($classname) { |
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| 102 | foreach ($this->nodes as $node) { |
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| 103 | if ($node->hasClass($classname)) |
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| 104 | return true; |
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| 105 | } |
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| 106 | 1 | return false; |
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| 107 | } |
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| 108 | |||
| 109 | 2 | public function html($value = null) { |
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| 120 | |||
| 121 | public function offsetExists($offset) { |
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| 122 | return isset($this->nodes[$offset]); |
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| 123 | } |
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| 124 | |||
| 125 | 2 | public function offsetGet($offset) { |
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| 128 | |||
| 129 | 2 | public function offsetSet($offset, $value) { |
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| 130 | |||
| 131 | 2 | if (is_null($offset) || !isset($this->nodes[$offset])) { |
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| 132 | throw new \BadMethodCallException("You are not allowed to add new nodes to the pQuery object."); |
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| 133 | } else { |
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| 134 | $this->nodes[$offset]->replaceWith($value); |
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| 135 | } |
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| 136 | 1 | } |
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| 137 | |||
| 138 | 10 | public function offsetUnset($offset) { |
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| 139 | 1 | if (isset($this->nodes[$offset])) { |
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| 140 | $this->nodes[$offset]->remove(); |
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| 141 | 10 | unset($this->nodes[$offset]); |
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| 142 | } |
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| 143 | 1 | } |
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| 144 | |||
| 145 | /** |
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| 146 | * Query a file or url. |
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| 147 | * |
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| 148 | * @param string $path The path to the url. |
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| 149 | * @param resource $context A context suitable to be passed into {@link file_get_contents} |
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| 150 | * @return pQuery\DomNode Returns the root dom node for the html file. |
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| 151 | */ |
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| 152 | 9 | public static function parseFile($path, $context = null) { |
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| 153 | 9 | $html_str = file_get_contents($path, false, $context); |
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| 154 | return static::parseStr($html_str); |
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| 155 | 9 | } |
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| 156 | |||
| 157 | /** |
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| 158 | * Query a string of html. |
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| 159 | * |
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| 160 | * @param string $html |
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| 161 | * @return pQuery\DomNode Returns the root dom node for the html string. |
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| 162 | */ |
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| 163 | 37 | public static function parseStr($html) { |
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| 164 | $parser = new pQuery\Html5Parser($html); |
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| 165 | 37 | return $parser->root; |
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| 166 | } |
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| 167 | |||
| 168 | 1 | public function prepend($content = null) { |
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| 174 | |||
| 175 | 3 | public function prop($name, $value = null) { |
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| 176 | 1 | if (empty($this->nodes) && $value === null) |
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| 177 | return ''; |
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| 178 | |||
| 179 | 1 | foreach ($this->nodes as $node) { |
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| 180 | 1 | if ($value === null) |
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| 181 | return $node->prop($name); |
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| 182 | $node->prop($name, $value); |
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| 183 | 1 | } |
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| 184 | 3 | return $this; |
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| 185 | 2 | } |
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| 186 | |||
| 187 | 1 | public function remove($selector = null) { |
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| 196 | |||
| 197 | 1 | public function removeAttr($name) { |
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| 198 | 1 | foreach ($this->nodes as $node) { |
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| 199 | $node->removeAttr($name); |
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| 200 | } |
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| 201 | 1 | return $this; |
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| 202 | } |
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| 203 | |||
| 204 | 2 | public function removeClass($classname) { |
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| 205 | 2 | foreach ($this->nodes as $node) { |
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| 206 | $node->removeClass($classname); |
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| 207 | } |
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| 208 | 2 | return $this; |
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| 209 | } |
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| 210 | |||
| 211 | 1 | public function replaceWith($content) { |
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| 212 | 1 | foreach ($this->nodes as &$node) { |
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| 213 | $node = $node->replaceWith($content); |
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| 214 | } |
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| 215 | 1 | return $this; |
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| 216 | } |
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| 217 | |||
| 218 | public function tagName($value = null) { |
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| 219 | foreach ($this->nodes as $node) { |
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| 220 | if ($value === null) |
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| 221 | return $node->tagName(); |
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| 222 | $node->tagName($value); |
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| 223 | } |
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| 224 | return $this; |
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| 225 | } |
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| 226 | |||
| 227 | 2 | public function text($value = null) { |
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| 228 | if (empty($this->nodes) && $value === null) |
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| 229 | 1 | return ''; |
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| 230 | |||
| 231 | foreach ($this->nodes as $node) { |
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| 232 | if ($value === null) |
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| 233 | return $node->text(); |
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| 234 | $node->text($value); |
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| 235 | } |
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| 236 | 2 | return $this; |
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| 237 | } |
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| 238 | |||
| 239 | public function toggleClass($classname, $switch = null) { |
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| 240 | foreach ($this->nodes as $node) { |
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| 241 | $node->toggleClass($classname, $switch); |
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| 242 | } |
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| 243 | |||
| 244 | return $this; |
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| 245 | } |
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| 246 | |||
| 247 | 1 | public function unwrap() { |
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| 253 | |||
| 254 | 1 | public function val($value = null) { |
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| 255 | 1 | if (empty($this->nodes) && $value === null) |
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| 256 | return ''; |
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| 257 | |||
| 258 | 1 | foreach ($this->nodes as $node) { |
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| 259 | 1 | if ($value === null) |
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| 260 | return $node->val(); |
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| 261 | $node->val($value); |
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| 262 | 1 | } |
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| 263 | 1 | return $this; |
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| 264 | 1 | } |
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| 265 | |||
| 266 | 2 | public function wrap($wrapping_element) { |
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| 267 | 2 | foreach ($this->nodes as $node) { |
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| 268 | $node->wrap($wrapping_element); |
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| 269 | } |
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| 270 | 2 | return $this; |
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| 271 | } |
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| 272 | |||
| 273 | 1 | public function wrapInner($wrapping_element) { |
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| 274 | 1 | foreach ($this->nodes as $node) { |
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| 275 | $node->wrapInner($wrapping_element); |
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| 276 | } |
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| 279 | } |
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| 280 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.