HTMLElement::getRenderHTML() - Code Metrics - Inspection of "no copy" - Corollarium/Formularium - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 207f22...1de42a )

by Bruno

created 2019-12-12 19:05 UTC

HTMLElement::getRenderHTML() F

↳ Parent: HTMLElement

Complexity

Conditions	20
Paths	145

Size

Total Lines	64
Code Lines	33

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	27
CRAP Score	22.4034

Importance

Changes

Metric	Value
cc	20
eloc	33
c	0
b	0
f	0
nc	145
nop	2
dl	0
loc	64
ccs	27
cts	33
cp	0.8182
crap	22.4034
rs	3.7916

How to fix Long Method Complexity

<?php declare(strict_types=1);

namespace Formularium;

use PHP_CodeSniffer\Generators\HTML;

/**
 * Class that encapsule DOM elements. Similar to PHP DOMElement but more flexible.
 * This is not used for parsing, but to build HTML.
 */
class HTMLElement
{
    const STANDALONE_TAGS = ['img', 'hr', 'br', 'input', 'meta', 'col', 'command', 'link', 'param', 'source', 'embed'];

    /**
     * The HTML attributes and respectives values
     * This is an associative array wich:
     *     key is the attribute and
     *     value is the array with attributes values
     * @var array
     */
    protected $attributes = [];

    /**
     * Tag name
     * @var string
     */
    protected $tag;

    /**
     * The content of Element
     * @var array
     */
    protected $content = [];

    /**
     * If this tag has no children, still render it?
     * @var boolean
     */
    protected $renderIfEmpty = true;

    /**
     * Create a HTML Element
     * @param string $tag The tag name of Element
     * @param array $attributes The attribute with values
     * @param mixed $content The content of element, can be:
     *                - string (with text content)
     *                - HTMLElement
     *                - array with others elements or text
     * @param boolean $raw If true, do not escape content.
     */
    public function __construct(string $tag, array $attributes = [], $content = '', $raw = false)
    {
        $this->tag = $tag;

        $this->setAttributes($attributes);

        if (!empty($content)) {
            $this->setContent($content, true, $raw);
        }
    }

    /**
     * Create a HTML Element
     * @param string $tag The tag name of Element
     * @param array $attributes The attribute with values
     * @param mixed $content The content of element, can be:
     *                - string (with text content)
     *                - HTMLElement
     *                - array with others elements or text
     * @param boolean $raw If true, do not escape content.
     * @return HTMLElement
     */
    public static function factory(string $tag, array $attributes = [], $content = '', $raw = false): HTMLElement
    {
        return new self($tag, $attributes, $content, $raw);
    }

    /**
     * Sets whether this tag will render if it is empty (that is,
     * no contents or children)
     *
     * @param boolean $val
     * @return HTMLElement Itself
     */
    public function setRenderIfEmpty(bool $val): HTMLElement
    {
        $this->renderIfEmpty = $val;
        return $this;
    }

    /**
     * Return a tag
     * @return string tag name
     */
    public function getTag()
    {
        return $this->tag;
    }

    /**
     * Modifies our tag
     *
     * @param string $tag
     * @return HTMLElement Itself
     */
    public function setTag($tag)
    {
        $this->tag = $tag;
        return $this;
    }

    /**
     * Return a attribute
     * @param string $name The name of attribute
     * @return array Return the list of values, if attribute don't exist return empty array
     */
    public function getAttribute($name): array
    {
        return $this->attributes[$name] ?? [];
    }

    /**
     * Return the content of element
     * @return mixed array of HTMLElement and string (text)
     */
    public function getContent()
    {
        return $this->content;
    }

    public function isEmpty(): bool
    {
        return count($this->content) > 0;
    }

    /**
     *
     * @return int
     */
    public function getCountChildren(): int
    {
        return count($this->content);
    }

    /**
     * Set a attribute value, if attribute exist overwrite it
     * @param string $name
     * @param mixed $value Can be a string or array of string
     * @return HTMLElement Itself
     */
    public function setAttribute(string $name, $value): HTMLElement
    {
        $this->setAttributes([$name => $value], true);
        return $this;
    }

    /**
     * Add an attribute value, if attribute exist append value
     * @param string $name
     * @param mixed $value Can be a string or array of string
     * @return HTMLElement Itself
     */
    public function addAttribute(string $name, $value): HTMLElement
    {
        $this->setAttributes([$name => $value], false);
        return $this;
    }

    /**
     * Set a set of attributes
     * @param array $attributes Associative array wich
     * 				key is attributes names
     *              value is string or array values
     * @param bool $overwrite if true and attribute name exist overwrite them
     * @return HTMLElement Itself
     *
     */
    public function setAttributes(array $attributes, $overwrite = true): HTMLElement
    {
        foreach ($attributes as $atrib => $value) {
            if (is_array($value)) {
                $values = $value;
            } else {
                $values = [$value];
            }

            if ($overwrite) {
                $this->attributes[$atrib] = $values;
            } else {
                if (empty($this->attributes[$atrib])) {
                    $this->attributes[$atrib] = [];
                }

                $this->attributes[$atrib] = array_merge($this->attributes[$atrib], $values);
            }
        }
        return $this;
    }

    public function removeAttribute(string $attribute): HTMLElement
    {
        if (array_key_exists($attribute, $this->attributes)) {
            unset($this->attributes[$attribute]);
        }
        return $this;
    }

    /**
     * Aliases to HTMLElement::setAttributes($content, false);
     * @see setAttributes
     * @return HTMLElement Itself
     */
    public function addAttributes(array $attributes): HTMLElement
    {
        $this->setAttributes($attributes, false);
        return $this;
    }

    /**
     * Set content (dom objects or texts) to element
     * @param string|HTMLElement|string[]|HTMLElement[] $content The content of element, can be:
     *                - string (with text content)
     *                - HTMLElement
     *                - array with others elements or text
     * @param bool $overwrite if true overwrite content otherwise append the content
     * @param bool $raw If true, this is raw content (html) and should not be escaped.
     * @param bool $prepend If true prepend instead of appending
     * @return HTMLElement Itself
     */
    public function setContent($content, $overwrite = true, $raw = false, $prepend = false): HTMLElement
    {
        // TODO Don't work with reference objects, change it
        if (!is_array($content)) {
            $content = [$content];
        }

        if ($raw === false) {
            foreach ($content as &$item) {
                if (is_string($item)) {
                    $item = htmlspecialchars($item);
                }
            }
        }

        if ($overwrite) {
            $this->content = $content;
        } else {
            if ($prepend) {
                $this->content = array_merge($content, $this->content);
            } else {
                $this->content = array_merge($this->content, $content);
            }
        }
        return $this;
    }

    /**
     * Aliases to HTMLElement::setContent($content, false);
     * @see setContent
     * @param string|HTMLElement|string[]|HTMLElement[] $content
     * @return HTMLElement Itself
     */
    public function addContent($content, bool $raw = false): HTMLElement
    {
        $this->setContent($content, false, $raw);
        return $this;
    }

    /**
     * Appends content nodes to the bottom of this element.
     *
     * @see setContent
     * @param string|HTMLElement|string[]|HTMLElement[] $content
     * @param boolean $raw
     * @return HTMLElement
     */
    public function appendContent($content, bool $raw = false): HTMLElement
    {
        $this->setContent($content, false, $raw);
        return $this;
    }

    /**
     * Prepends content nodes to the beginning of this element.
     *
     * @see setContent
     * @param string|HTMLElement|string[]|HTMLElement[] $content
     * @param boolean $raw
     * @return HTMLElement
     */
    public function prependContent($content, bool $raw = false): HTMLElement
    {
        $this->setContent($content, false, $raw, true);
        return $this;
    }

    /**
     * Find and return elements using selector
     * @param string $selector A selector of elements based in jQuery
     *						'eee' - Select elements 'eee' (with tag)
     * 						'#ii' - Select a element with id attribute 'ii'
     * 						'.cc' - Select elements with class attribute 'cc'
     * 						'[a=v]' - Select elements with 'a' attribute with 'v' value
     * 						'e#i' - Select elements 'e' with id attribute 'i'
     * 						'e.c' - Select elements 'e' with class attribute 'c'
     * @return HTMLElement[]
     */
    public function get(string $selector)
    {
        $tag = null;
        $attr = null;
        $val = null;

        // Define what could be found
        $selector = trim($selector);
        if ($selector[0] == "#") {
            $attr = "id";
            $val = mb_substr($selector, 1);
        } elseif ($selector[0] == ".") {
            $attr = "class";
            $val = mb_substr($selector, 1);
        } elseif (mb_strpos($selector, "=") !== false) {
            list($attr, $val) = explode("=", substr($selector, 1, -1));
        } elseif (mb_strpos($selector, "#") !== false) {
            $attr = "id";
            list($tag, $val) = explode("#", $selector);
        } elseif (mb_strpos($selector, ".") !== false) {
            $attr = "class";
            list($tag, $val) = explode(".", $selector);
        } else {
            $tag = $selector;
        }

        return $this->getInternal($this, $tag, $attr, $val);
    }

    /**
     * Find and return elements based in $tag, $attr, $val
     * The $tag or $attr must be a value
     *
     * @see HTMLElement::get
     * @param string $tag tag of search
     * @param string $attr attribute of search
     * @param string $val value of attribute search
     * @return HTMLElement[]
     */
    public function getElements(string $tag, string $attr, string $val)
    {
        return $this->getInternal($this, $tag, $attr, $val);
    }

    /**
     * Recursive function to found elements
     * @param HTMLElement $element Element that will be available
     * @param string $tag Tag or null value to compare
     * @param string $attr Attribute name or null value to compare
     * @param string $val Value of attribute or null value to compare
     * @return HTMLElement[]
     */
    protected function getInternal(HTMLElement $element, string $tag = null, string $attr = null, string $val = null)
    {
        if ($this->match($element, $tag, $attr, $val)) {
            $return = [$element];
        } else {
            $return = [];
        }

        foreach ($element->getContent() as $content) {
            if ($content instanceof HTMLElement) {
                $return = array_merge($return, $this->getInternal($content, $tag, $attr, $val));
            }
        }

        return $return;
    }

    /**
     * Return a boolean based on match of the element with $tag, $attr or $val
     * @param HTMLElement $element Element that will be available
     * @param string $tag Tag or null value to compare
     * @param string $attr Attribute name or null value to compare
     * @param string $val Value of attribute or null value to compare
     * @return boolean - true when satisfy and false otherwise
     */
    protected function match(HTMLElement $element, $tag, $attr, $val): bool
    {
        if (!empty($tag)) {
            if ($element->getTag() != $tag) {
                return false;
            }
        } elseif (empty($attr)) {
            // Only when $tag and $attr is empty
            return false;
        }

        if (!empty($attr)) {
            $values = $element->getAttribute($attr);
            if (count($values) == 0) {
                return false;
            }

            if (!empty($val)) {
                return in_array($val, $values);
            }
        }

        return true;
    }

    public function __toString()
    {
        return $this->getRenderHTML();
    }
    
    /**
     * Return the html element code including all children
     *
     * @param string $indentString String used to indent HTML code. Use '' for a compact version.
     * @param integer $level The current indentation level.
     * @return string (html code)
     */
    public function getRenderHTML($indentString = '  ', $level = 0): string
    {

        // skip empty non renderable
        if ($this->renderIfEmpty === false) {
            if (!count($this->content)) {
                return '';
            }
        }

        // start
        $data = [];

        // if this is not empty, the tag
        if (!empty($this->tag)) {
            $open = [];
            $open[] = ($level > 0 ? $indentString : '') . // initial indentation
                '<' . htmlspecialchars($this->tag);

            // render tag attributes
            foreach ($this->attributes as $atrib => $value) {
                $open[] = $atrib . '="' . htmlspecialchars(implode(' ', $value)) . '"';
            }
            $data[] = join(' ', $open) . (in_array($this->tag, self::STANDALONE_TAGS) ? '/>' : '>');
        }

        // recurse
        $contentdata = [];
        $emptyfieldset = ($this->tag == 'fieldset'); // avoid rendering fieldset with only a "legend"
        foreach ($this->content as $content) {
            if ($content instanceof HTMLElement) {
                $c = $content->getRenderHTML($indentString, $level + 1);
                if ($this->tag == 'fieldset' and $content->getTag() != 'legend' and $c) {
                    $emptyfieldset = false;
                }
                $contentdata[] = $c;
            } else {
                $emptyfieldset = false;
                $contentdata[] = $indentString . $content;
            }
        }

        // handle special empty cases
        if ($emptyfieldset) {
            return '';
        } elseif ($contentdata == [] && $this->renderIfEmpty === false) {
            return '';
        }

        // join content
        $data = array_merge($data, $contentdata);

        // handle closing
        if (!empty($this->tag)
            && !in_array($this->tag, self::STANDALONE_TAGS)
        ) {
            $data[] = '</' . htmlspecialchars($this->tag) . '>';
        }

        if ($indentString && $level === 0) {
            $data[] = "\n";
        }

        return implode(($indentString ? "\n" : '') . str_repeat($indentString, $level), $data);
    }

    /**
     * Clone HTMLElement object and its child
     * @return Object HTMLElement
     */
    public function __clone()
    {
        $obj = new HTMLElement($this->tag, $this->attributes);
        foreach ($this->content as $content) {
            if ($content instanceof HTMLElement) {
                $obj->addContent(clone $content);
            } else {
                $obj->addContent($content);
            }
        }
    }

    public function replace(HTMLElement $e): void
    {
        $this->tag = $e->tag;
        $this->attributes = $e->attributes;
        $this->content = $e->content;
    }

    /**
     * Clear All Attributes
     */
    public function clearAttributes(): HTMLElement
    {
        $this->attributes = [];
        return $this;
    }


    /**
     * Clear All Content
     */
    public function clearContent(): HTMLElement
    {
        $this->content = [];
        return $this;
    }

    /**
     * Similar to array_walk(). Applied to this HTMLElement and all its children.
     * Does not call callback for text content.
     *
     * @param callable $f
     * @return HTMLElement self
     */
    public function walk(callable $f): HTMLElement
    {
        $f($this);
        foreach ($this->content as $content) {
            if ($content instanceof HTMLElement) {
                $content->walk($f);
            }
        }
        return $this;
    }

    /**
     * Similar to array_map(). Calls callback for text content too.
     *
     * @param callable $f
     * @return array
     */
    public function map(callable $f, bool $recurse = true): array
    {
        $data = [$f($this)];
        foreach ($this->content as $content) {
            if ($recurse && $content instanceof HTMLElement) {
                $data = array_merge($data, $content->map($f, $recurse));
            } else {
                $data[] = $f($content);
            }
        }
        return $data;
    }

    /**
     * Similar to array_filter().
     * Does not call callback for text content.
     *
     * @param callable $f
     * @return HTMLElement[] The filtered elements.
     */
    public function filter(callable $f, bool $recurse = true): array
    {
        $deleted = [];
        foreach ($this->content as $key => $content) {
            if ($content instanceof HTMLElement) {
                if (!$f($content)) {
                    $deleted[] = $this->content[$key];
                    unset($this->content[$key]);
                } elseif ($recurse) {
                    $content->filter($f, $recurse);
                }
            }
        }
        return $deleted;
    }
}


1		<?php declare(strict_types=1);
2
3		namespace Formularium;
4
5		use PHP_CodeSniffer\Generators\HTML;
6
7		/**
8		* Class that encapsule DOM elements. Similar to PHP DOMElement but more flexible.
9		* This is not used for parsing, but to build HTML.
10		*/
11		class HTMLElement
12		{
13		const STANDALONE_TAGS = ['img', 'hr', 'br', 'input', 'meta', 'col', 'command', 'link', 'param', 'source', 'embed'];
14
15		/**
16		* The HTML attributes and respectives values
17		* This is an associative array wich:
18		* key is the attribute and
19		* value is the array with attributes values
20		* @var array
21		*/
22		protected $attributes = [];
23
24		/**
25		* Tag name
26		* @var string
27		*/
28		protected $tag;
29
30		/**
31		* The content of Element
32		* @var array
33		*/
34		protected $content = [];
35
36		/**
37		* If this tag has no children, still render it?
38		* @var boolean
39		*/
40		protected $renderIfEmpty = true;
41
42		/**
43		* Create a HTML Element
44		* @param string $tag The tag name of Element
45		* @param array $attributes The attribute with values
46		* @param mixed $content The content of element, can be:
47		* - string (with text content)
48		* - HTMLElement
49		* - array with others elements or text
50		* @param boolean $raw If true, do not escape content.
51		*/
52	9	public function __construct(string $tag, array $attributes = [], $content = '', $raw = false)
53		{
54	9	$this->tag = $tag;
55
56	9	$this->setAttributes($attributes);
57
58	9	if (!empty($content)) {
59	5	$this->setContent($content, true, $raw);
60		}
61	9	}
62
63		/**
64		* Create a HTML Element
65		* @param string $tag The tag name of Element
66		* @param array $attributes The attribute with values
67		* @param mixed $content The content of element, can be:
68		* - string (with text content)
69		* - HTMLElement
70		* - array with others elements or text
71		* @param boolean $raw If true, do not escape content.
72		* @return HTMLElement
73		*/
74		public static function factory(string $tag, array $attributes = [], $content = '', $raw = false): HTMLElement
75		{
76		return new self($tag, $attributes, $content, $raw);
77		}
78
79		/**
80		* Sets whether this tag will render if it is empty (that is,
81		* no contents or children)
82		*
83		* @param boolean $val
84		* @return HTMLElement Itself
85		*/
86		public function setRenderIfEmpty(bool $val): HTMLElement
87		{
88		$this->renderIfEmpty = $val;
89		return $this;
90		}
91
92		/**
93		* Return a tag
94		* @return string tag name
95		*/
96	4	public function getTag()
97		{
98	4	return $this->tag;
99		}
100
101		/**
102		* Modifies our tag
103		*
104		* @param string $tag
105		* @return HTMLElement Itself
106		*/
107	1	public function setTag($tag)
108		{
109	1	$this->tag = $tag;
110	1	return $this;
111		}
112
113		/**
114		* Return a attribute
115		* @param string $name The name of attribute
116		* @return array Return the list of values, if attribute don't exist return empty array
117		*/
118	1	public function getAttribute($name): array
119		{
120	1	return $this->attributes[$name] ?? [];
121		}
122
123		/**
124		* Return the content of element
125		* @return mixed array of HTMLElement and string (text)
126		*/
127	3	public function getContent()
128		{
129	3	return $this->content;
130		}
131
132		public function isEmpty(): bool
133		{
134		return count($this->content) > 0;
135		}
136
137		/**
138		*
139		* @return int
140		*/
141		public function getCountChildren(): int
142		{
143		return count($this->content);
144		}
145
146		/**
147		* Set a attribute value, if attribute exist overwrite it
148		* @param string $name
149		* @param mixed $value Can be a string or array of string
150		* @return HTMLElement Itself
151		*/
152	1	public function setAttribute(string $name, $value): HTMLElement
153		{
154	1	$this->setAttributes([$name => $value], true);
155	1	return $this;
156		}
157
158		/**
159		* Add an attribute value, if attribute exist append value
160		* @param string $name
161		* @param mixed $value Can be a string or array of string
162		* @return HTMLElement Itself
163		*/
164	1	public function addAttribute(string $name, $value): HTMLElement
165		{
166	1	$this->setAttributes([$name => $value], false);
167	1	return $this;
168		}
169
170		/**
171		* Set a set of attributes
172		* @param array $attributes Associative array wich
173		* key is attributes names
174		* value is string or array values
175		* @param bool $overwrite if true and attribute name exist overwrite them
176		* @return HTMLElement Itself
177		*
178		*/
179	9	public function setAttributes(array $attributes, $overwrite = true): HTMLElement
180		{
181	9	foreach ($attributes as $atrib => $value) {
182	8	if (is_array($value)) {
183	2	$values = $value;
184		} else {
185	8	$values = [$value];
186		}
187
188	8	if ($overwrite) {
189	8	$this->attributes[$atrib] = $values;
190		} else {
191	1	if (empty($this->attributes[$atrib])) {
192	1	$this->attributes[$atrib] = [];
193		}
194
195	8	$this->attributes[$atrib] = array_merge($this->attributes[$atrib], $values);
196		}
197		}
198	9	return $this;
199		}
200
201		public function removeAttribute(string $attribute): HTMLElement
202		{
203		if (array_key_exists($attribute, $this->attributes)) {
204		unset($this->attributes[$attribute]);
205		}
206		return $this;
207		}
208
209		/**
210		* Aliases to HTMLElement::setAttributes($content, false);
211		* @see setAttributes
212		* @return HTMLElement Itself
213		*/
214	1	public function addAttributes(array $attributes): HTMLElement
215		{
216	1	$this->setAttributes($attributes, false);
217	1	return $this;
218		}
219
220		/**
221		* Set content (dom objects or texts) to element
222		* @param string\|HTMLElement\|string[]\|HTMLElement[] $content The content of element, can be:
223		* - string (with text content)
224		* - HTMLElement
225		* - array with others elements or text
226		* @param bool $overwrite if true overwrite content otherwise append the content
227		* @param bool $raw If true, this is raw content (html) and should not be escaped.
228		* @param bool $prepend If true prepend instead of appending
229		* @return HTMLElement Itself
230		*/
231	7	public function setContent($content, $overwrite = true, $raw = false, $prepend = false): HTMLElement
232		{
233		// TODO Don't work with reference objects, change it
234	7	if (!is_array($content)) {
235	4	$content = [$content];
236		}
237
238	7	if ($raw === false) {
239	5	foreach ($content as &$item) {
240	5	if (is_string($item)) {
241	5	$item = htmlspecialchars($item);
242		}
243		}
244		}
245
246	7	if ($overwrite) {
247	5	$this->content = $content;
248		} else {
249	4	if ($prepend) {
250		$this->content = array_merge($content, $this->content);
251		} else {
252	4	$this->content = array_merge($this->content, $content);
253		}
254		}
255	7	return $this;
256		}
257
258		/**
259		* Aliases to HTMLElement::setContent($content, false);
260		* @see setContent
261		* @param string\|HTMLElement\|string[]\|HTMLElement[] $content
262		* @return HTMLElement Itself
263		*/
264	3	public function addContent($content, bool $raw = false): HTMLElement
265		{
266	3	$this->setContent($content, false, $raw);
267	3	return $this;
268		}
269
270		/**
271		* Appends content nodes to the bottom of this element.
272		*
273		* @see setContent
274		* @param string\|HTMLElement\|string[]\|HTMLElement[] $content
275		* @param boolean $raw
276		* @return HTMLElement
277		*/
278		public function appendContent($content, bool $raw = false): HTMLElement
279		{
280		$this->setContent($content, false, $raw);
281		return $this;
282		}
283
284		/**
285		* Prepends content nodes to the beginning of this element.
286		*
287		* @see setContent
288		* @param string\|HTMLElement\|string[]\|HTMLElement[] $content
289		* @param boolean $raw
290		* @return HTMLElement
291		*/
292		public function prependContent($content, bool $raw = false): HTMLElement
293		{
294		$this->setContent($content, false, $raw, true);
295		return $this;
296		}
297
298		/**
299		* Find and return elements using selector
300		* @param string $selector A selector of elements based in jQuery
301		* 'eee' - Select elements 'eee' (with tag)
302		* '#ii' - Select a element with id attribute 'ii'
303		* '.cc' - Select elements with class attribute 'cc'
304		* '[a=v]' - Select elements with 'a' attribute with 'v' value
305		* 'e#i' - Select elements 'e' with id attribute 'i'
306		* 'e.c' - Select elements 'e' with class attribute 'c'
307		* @return HTMLElement[]
308		*/
309	1	public function get(string $selector)
310		{
311	1	$tag = null;
312	1	$attr = null;
313	1	$val = null;
314
315		// Define what could be found
316	1	$selector = trim($selector);
317	1	if ($selector[0] == "#") {
318	1	$attr = "id";
319	1	$val = mb_substr($selector, 1);
320	1	} elseif ($selector[0] == ".") {
321	1	$attr = "class";
322	1	$val = mb_substr($selector, 1);
323	1	} elseif (mb_strpos($selector, "=") !== false) {
324	1	list($attr, $val) = explode("=", substr($selector, 1, -1));
325	1	} elseif (mb_strpos($selector, "#") !== false) {
326	1	$attr = "id";
327	1	list($tag, $val) = explode("#", $selector);
328	1	} elseif (mb_strpos($selector, ".") !== false) {
329	1	$attr = "class";
330	1	list($tag, $val) = explode(".", $selector);
331		} else {
332	1	$tag = $selector;
333		}
334
335	1	return $this->getInternal($this, $tag, $attr, $val);
336		}
337
338		/**
339		* Find and return elements based in $tag, $attr, $val
340		* The $tag or $attr must be a value
341		*
342		* @see HTMLElement::get
343		* @param string $tag tag of search
344		* @param string $attr attribute of search
345		* @param string $val value of attribute search
346		* @return HTMLElement[]
347		*/
348	1	public function getElements(string $tag, string $attr, string $val)
349		{
350	1	return $this->getInternal($this, $tag, $attr, $val);
351		}
352
353		/**
354		* Recursive function to found elements
355		* @param HTMLElement $element Element that will be available
356		* @param string $tag Tag or null value to compare
357		* @param string $attr Attribute name or null value to compare
358		* @param string $val Value of attribute or null value to compare
359		* @return HTMLElement[]
360		*/
361	1	protected function getInternal(HTMLElement $element, string $tag = null, string $attr = null, string $val = null)
362		{
363	1	if ($this->match($element, $tag, $attr, $val)) {
364	1	$return = [$element];
365		} else {
366	1	$return = [];
367		}
368
369	1	foreach ($element->getContent() as $content) {
370	1	if ($content instanceof HTMLElement) {
371	1	$return = array_merge($return, $this->getInternal($content, $tag, $attr, $val));
372		}
373		}
374
375	1	return $return;
376		}
377
378		/**
379		* Return a boolean based on match of the element with $tag, $attr or $val
380		* @param HTMLElement $element Element that will be available
381		* @param string $tag Tag or null value to compare
382		* @param string $attr Attribute name or null value to compare
383		* @param string $val Value of attribute or null value to compare
384		* @return boolean - true when satisfy and false otherwise
385		*/
386	1	protected function match(HTMLElement $element, $tag, $attr, $val): bool
387		{
388	1	if (!empty($tag)) {
389	1	if ($element->getTag() != $tag) {
390	1	return false;
391		}
392		} elseif (empty($attr)) {
393		// Only when $tag and $attr is empty
394	1	return false;
395		}
396
397	1	if (!empty($attr)) {
398	1	$values = $element->getAttribute($attr);
399	1	if (count($values) == 0) {
400	1	return false;
401		}
402
403	1	if (!empty($val)) {
404	1	return in_array($val, $values);
405		}
406		}
407
408	1	return true;
409		}
410
411		public function __toString()
412		{
413		return $this->getRenderHTML();
414		}
415
416		/**
417		* Return the html element code including all children
418		*
419		* @param string $indentString String used to indent HTML code. Use '' for a compact version.
420		* @param integer $level The current indentation level.
421		* @return string (html code)
422		*/
423	5	public function getRenderHTML($indentString = ' ', $level = 0): string
424		{
425
426		// skip empty non renderable
427	5	if ($this->renderIfEmpty === false) {
428		if (!count($this->content)) {
429		return '';
430		}
431		}
432
433		// start
434	5	$data = [];
435
436		// if this is not empty, the tag
437	5	if (!empty($this->tag)) {
438	5	$open = [];
439	5	$open[] = ($level > 0 ? $indentString : '') . // initial indentation
440	5	'<' . htmlspecialchars($this->tag);
441
442		// render tag attributes
443	5	foreach ($this->attributes as $atrib => $value) {
444	4	$open[] = $atrib . '="' . htmlspecialchars(implode(' ', $value)) . '"';
445		}
446	5	$data[] = join(' ', $open) . (in_array($this->tag, self::STANDALONE_TAGS) ? '/>' : '>');
447		}
448
449		// recurse
450	5	$contentdata = [];
451	5	$emptyfieldset = ($this->tag == 'fieldset'); // avoid rendering fieldset with only a "legend"
452	5	foreach ($this->content as $content) {
453	2	if ($content instanceof HTMLElement) {
454	1	$c = $content->getRenderHTML($indentString, $level + 1);
455	1	if ($this->tag == 'fieldset' and $content->getTag() != 'legend' and $c) {
456		$emptyfieldset = false;
457		}
458	1	$contentdata[] = $c;
459		} else {
460	2	$emptyfieldset = false;
461	2	$contentdata[] = $indentString . $content;
462		}
463		}
464
465		// handle special empty cases
466	5	if ($emptyfieldset) {
467		return '';
468	5	} elseif ($contentdata == [] && $this->renderIfEmpty === false) {
469		return '';
470		}
471
472		// join content
473	5	$data = array_merge($data, $contentdata);
474
475		// handle closing
476	5	if (!empty($this->tag)
477	5	&& !in_array($this->tag, self::STANDALONE_TAGS)
478		) {
479	5	$data[] = '</' . htmlspecialchars($this->tag) . '>';
480		}
481
482	5	if ($indentString && $level === 0) {
483		$data[] = "\n";
484		}
485
486	5	return implode(($indentString ? "\n" : '') . str_repeat($indentString, $level), $data);
487		}
488
489		/**
490		* Clone HTMLElement object and its child
491		* @return Object HTMLElement
492		*/
493		public function __clone()
494		{
495		$obj = new HTMLElement($this->tag, $this->attributes);
496		foreach ($this->content as $content) {
497		if ($content instanceof HTMLElement) {
498		$obj->addContent(clone $content);
499		} else {
500		$obj->addContent($content);
501		}
502		}
503		}
504
505		public function replace(HTMLElement $e): void
506		{
507		$this->tag = $e->tag;
508		$this->attributes = $e->attributes;
509		$this->content = $e->content;
510		}
511
512		/**
513		* Clear All Attributes
514		*/
515		public function clearAttributes(): HTMLElement
516		{
517		$this->attributes = [];
518		return $this;
519		}
520
521
522		/**
523		* Clear All Content
524		*/
525	1	public function clearContent(): HTMLElement
526		{
527	1	$this->content = [];
528	1	return $this;
529		}
530
531		/**
532		* Similar to array_walk(). Applied to this HTMLElement and all its children.
533		* Does not call callback for text content.
534		*
535		* @param callable $f
536		* @return HTMLElement self
537		*/
538	1	public function walk(callable $f): HTMLElement
539		{
540	1	$f($this);
541	1	foreach ($this->content as $content) {
542	1	if ($content instanceof HTMLElement) {
543	1	$content->walk($f);
544		}
545		}
546	1	return $this;
547		}
548
549		/**
550		* Similar to array_map(). Calls callback for text content too.
551		*
552		* @param callable $f
553		* @return array
554		*/
555	1	public function map(callable $f, bool $recurse = true): array
556		{
557	1	$data = [$f($this)];
558	1	foreach ($this->content as $content) {
559	1	if ($recurse && $content instanceof HTMLElement) {
560	1	$data = array_merge($data, $content->map($f, $recurse));
561		} else {
562	1	$data[] = $f($content);
563		}
564		}
565	1	return $data;
566		}
567
568		/**
569		* Similar to array_filter().
570		* Does not call callback for text content.
571		*
572		* @param callable $f
573		* @return HTMLElement[] The filtered elements.
574		*/
575	1	public function filter(callable $f, bool $recurse = true): array
576		{
577	1	$deleted = [];
578	1	foreach ($this->content as $key => $content) {
579	1	if ($content instanceof HTMLElement) {
580	1	if (!$f($content)) {
581	1	$deleted[] = $this->content[$key];
582	1	unset($this->content[$key]);
583		} elseif ($recurse) {
584	1	$content->filter($f, $recurse);
585		}
586		}
587		}
588	1	return $deleted;
589		}
590		}
591

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