aboutsummaryrefslogtreecommitdiff
path: root/lib/classes/Button.php
blob: 1c2c43753ed684fd3b7ad71514e9b28a3df50184 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
<?php
/*
 * Copyright (c) 2011 mlunzena@uos.de, aklassen@uos.de
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 */


namespace Studip;

/**
 * Represents an HTML button element. Class Button inherits from
 * Interactable and customizes the HTML output.
 */
class Button extends Interactable
{

    /**
     * Initialize a Button.
     * The second parameter is used as @name attribute of the
     * resulting <button> HTML element.
     *
     * @param string $label       the label of the button element
     * @param string $name        the @name element of the button element
     * @param array  $attributes  the attributes of the button element
     */
    protected function initialize($label, $name, $attributes)
    {
        $this->attributes['name'] = $name ?: $this->label;
    }

    /**
     * @return  string returns a HTML representation of this button.
     */
    public function __toString()
    {
        // add "button" to attribute @class
        if (!isset($this->attributes['class'])) {
            $this->attributes['class'] = '';
        }
        $this->attributes['class'] .= ' button';

        $attributes = [];
        ksort($this->attributes);
        foreach ($this->attributes as $k => $v) {
            $attributes[] = sprintf(' %s="%s"', $k, htmlReady($v));
        }

        return sprintf(
            '<button type="submit"%s>%s</button>',
            join('', $attributes),
            htmlReady($this->label)
        );
    }
}