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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (http://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 7 | * @copyright Copyright (c) 2009-2021 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 8 | * @license http://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Dom; |
| 15 | |
| 16 | /** |
| 17 | * Abstract node class |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Dom |
| 21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 22 | * @copyright Copyright (c) 2009-2021 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 23 | * @license http://www.popphp.org/license New BSD License |
| 24 | * @version 3.3.0 |
| 25 | */ |
| 26 | abstract class AbstractNode |
| 27 | { |
| 28 | |
| 29 | /** |
| 30 | * Object child nodes |
| 31 | * @var array |
| 32 | */ |
| 33 | protected $childNodes = []; |
| 34 | |
| 35 | /** |
| 36 | * Indentation for formatting purposes |
| 37 | * @var string |
| 38 | */ |
| 39 | protected $indent = null; |
| 40 | |
| 41 | /** |
| 42 | * Child output |
| 43 | * @var string |
| 44 | */ |
| 45 | protected $output = null; |
| 46 | |
| 47 | /** |
| 48 | * Parent node |
| 49 | * @var AbstractNode |
| 50 | */ |
| 51 | protected $parent = null; |
| 52 | |
| 53 | /** |
| 54 | * Return the indent |
| 55 | * |
| 56 | * @return string |
| 57 | */ |
| 58 | public function getIndent() |
| 59 | { |
| 60 | return $this->indent; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Set the indent |
| 65 | * |
| 66 | * @param string $indent |
| 67 | * @return mixed |
| 68 | */ |
| 69 | public function setIndent($indent) |
| 70 | { |
| 71 | $this->indent = $indent; |
| 72 | return $this; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Return the parent node |
| 77 | * |
| 78 | * @return AbstractNode |
| 79 | */ |
| 80 | public function getParent() |
| 81 | { |
| 82 | return $this->parent; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Set the parent node |
| 87 | * |
| 88 | * @param AbstractNode $parent |
| 89 | * @return AbstractNode |
| 90 | */ |
| 91 | public function setParent(AbstractNode $parent) |
| 92 | { |
| 93 | $this->parent = $parent; |
| 94 | return $this; |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Add a child to the object |
| 99 | * |
| 100 | * @param mixed $c |
| 101 | * @throws \InvalidArgumentException |
| 102 | * @return mixed |
| 103 | */ |
| 104 | public function addChild(Child $c) |
| 105 | { |
| 106 | $c->setParent($this); |
| 107 | $this->childNodes[] = $c; |
| 108 | return $this; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Add children to the object |
| 113 | * |
| 114 | * @param $children |
| 115 | * @throws Exception |
| 116 | * @return mixed |
| 117 | */ |
| 118 | public function addChildren($children) |
| 119 | { |
| 120 | if (is_array($children)) { |
| 121 | foreach ($children as $child) { |
| 122 | $this->addChild($child); |
| 123 | } |
| 124 | } else if ($children instanceof Child) { |
| 125 | $this->addChild($children); |
| 126 | } else { |
| 127 | throw new Exception( |
| 128 | 'Error: The parameter passed must be an instance of Pop\Dom\Child or an array of Pop\Dom\Child instances.' |
| 129 | ); |
| 130 | } |
| 131 | |
| 132 | return $this; |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Get whether or not the child object has children |
| 137 | * |
| 138 | * @return boolean |
| 139 | */ |
| 140 | public function hasChildren() |
| 141 | { |
| 142 | return (count($this->childNodes) > 0); |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Get whether or not the child object has children (alias) |
| 147 | * |
| 148 | * @return boolean |
| 149 | */ |
| 150 | public function hasChildNodes() |
| 151 | { |
| 152 | return (count($this->childNodes) > 0); |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Get the child nodes of the object |
| 157 | * |
| 158 | * @param int $i |
| 159 | * @return Child |
| 160 | */ |
| 161 | public function getChild($i) |
| 162 | { |
| 163 | return (isset($this->childNodes[(int)$i])) ? $this->childNodes[(int)$i] : null; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Get the child nodes of the object |
| 168 | * |
| 169 | * @return array |
| 170 | */ |
| 171 | public function getChildren() |
| 172 | { |
| 173 | return $this->childNodes; |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Get the child nodes of the object (alias) |
| 178 | * |
| 179 | * @return array |
| 180 | */ |
| 181 | public function getChildNodes() |
| 182 | { |
| 183 | return $this->childNodes; |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Remove all child nodes from the object |
| 188 | * |
| 189 | * @param int $i |
| 190 | * @return void |
| 191 | */ |
| 192 | public function removeChild($i) |
| 193 | { |
| 194 | if (isset($this->childNodes[$i])) { |
| 195 | unset($this->childNodes[$i]); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Remove all child nodes from the object |
| 201 | * |
| 202 | * @return void |
| 203 | */ |
| 204 | public function removeChildren() |
| 205 | { |
| 206 | $this->childNodes = []; |
| 207 | } |
| 208 | |
| 209 | } |