summaryrefslogtreecommitdiff
path: root/program/include/html.php
blob: 09485e5196b5badeed4a3f2205a06e5e289b7f9e (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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
<?php

/*
 +-----------------------------------------------------------------------+
 | program/include/html.php                                              |
 |                                                                       |
 | This file is part of the Roundcube Webmail client                     |
 | Copyright (C) 2005-2011, The Roundcube Dev Team                       |
 | Licensed under the GNU GPL                                            |
 |                                                                       |
 | PURPOSE:                                                              |
 |   Helper class to create valid XHTML code                             |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+

 $Id$

 */


/**
 * Class for HTML code creation
 *
 * @package HTML
 */
class html
{
    protected $tagname;
    protected $attrib = array();
    protected $allowed = array();
    protected $content;

    public static $doctype = 'xhtml';
    public static $lc_tags = true;
    public static $common_attrib = array('id','class','style','title','align');
    public static $containers = array('iframe','div','span','p','h1','h2','h3','form','textarea','table','thead','tbody','tr','th','td','style','script');

    /**
     * Constructor
     *
     * @param array $attrib Hash array with tag attributes
     */
    public function __construct($attrib = array())
    {
        if (is_array($attrib)) {
            $this->attrib = $attrib;
        }
    }

    /**
     * Return the tag code
     *
     * @return string The finally composed HTML tag
     */
    public function show()
    {
        return self::tag($this->tagname, $this->attrib, $this->content, array_merge(self::$common_attrib, $this->allowed));
    }

    /****** STATIC METHODS *******/

    /**
     * Generic method to create a HTML tag
     *
     * @param string $tagname Tag name
     * @param array  $attrib  Tag attributes as key/value pairs
     * @param string $content Optinal Tag content (creates a container tag)
     * @param array  $allowed_attrib List with allowed attributes, omit to allow all
     * @return string The XHTML tag
     */
    public static function tag($tagname, $attrib = array(), $content = null, $allowed_attrib = null)
    {
        if (is_string($attrib))
            $attrib = array('class' => $attrib);

        $inline_tags = array('a','span','img');
        $suffix = $attrib['nl'] || ($content && $attrib['nl'] !== false && !in_array($tagname, $inline_tags)) ? "\n" : '';

        $tagname = self::$lc_tags ? strtolower($tagname) : $tagname;
        if (isset($content) || in_array($tagname, self::$containers)) {
            $suffix = $attrib['noclose'] ? $suffix : '</' . $tagname . '>' . $suffix;
            unset($attrib['noclose'], $attrib['nl']);
            return '<' . $tagname  . self::attrib_string($attrib, $allowed_attrib) . '>' . $content . $suffix;
        }
        else {
            return '<' . $tagname  . self::attrib_string($attrib, $allowed_attrib) . '>' . $suffix;
        }
    }

    /**
     *
     */
    public static function doctype($type)
    {
        $doctypes = array(
            'html5'        => '<!DOCTYPE html>',
            'xhtml'        => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
            'xhtml-trans'  => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
            'xhtml-strict' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">',
        );

        if ($doctypes[$type]) {
            self::$doctype = preg_replace('/-\w+$/', '', $type);
            return $doctypes[$type];
        }

        return '';
    }

    /**
     * Derrived method for <div> containers
     *
     * @param mixed  $attr Hash array with tag attributes or string with class name
     * @param string $cont Div content
     * @return string HTML code
     * @see html::tag()
     */
    public static function div($attr = null, $cont = null)
    {
        if (is_string($attr)) {
            $attr = array('class' => $attr);
        }
        return self::tag('div', $attr, $cont, array_merge(self::$common_attrib, array('onclick')));
    }

    /**
     * Derrived method for <p> blocks
     *
     * @param mixed  $attr Hash array with tag attributes or string with class name
     * @param string $cont Paragraph content
     * @return string HTML code
     * @see html::tag()
     */
    public static function p($attr = null, $cont = null)
    {
        if (is_string($attr)) {
            $attr = array('class' => $attr);
        }
        return self::tag('p', $attr, $cont, self::$common_attrib);
    }

    /**
     * Derrived method to create <img />
     *
     * @param mixed $attr Hash array with tag attributes or string with image source (src)
     * @return string HTML code
     * @see html::tag()
     */
    public static function img($attr = null)
    {
        if (is_string($attr)) {
            $attr = array('src' => $attr);
        }
        return self::tag('img', $attr + array('alt' => ''), null, array_merge(self::$common_attrib,
	    array('src','alt','width','height','border','usemap')));
    }

    /**
     * Derrived method for link tags
     *
     * @param mixed  $attr Hash array with tag attributes or string with link location (href)
     * @param string $cont Link content
     * @return string HTML code
     * @see html::tag()
     */
    public static function a($attr, $cont)
    {
        if (is_string($attr)) {
            $attr = array('href' => $attr);
        }
        return self::tag('a', $attr, $cont, array_merge(self::$common_attrib,
	    array('href','target','name','rel','onclick','onmouseover','onmouseout','onmousedown','onmouseup')));
    }

    /**
     * Derrived method for inline span tags
     *
     * @param mixed  $attr Hash array with tag attributes or string with class name
     * @param string $cont Tag content
     * @return string HTML code
     * @see html::tag()
     */
    public static function span($attr, $cont)
    {
        if (is_string($attr)) {
            $attr = array('class' => $attr);
        }
        return self::tag('span', $attr, $cont, self::$common_attrib);
    }

    /**
     * Derrived method for form element labels
     *
     * @param mixed  $attr Hash array with tag attributes or string with 'for' attrib
     * @param string $cont Tag content
     * @return string HTML code
     * @see html::tag()
     */
    public static function label($attr, $cont)
    {
        if (is_string($attr)) {
            $attr = array('for' => $attr);
        }
        return self::tag('label', $attr, $cont, array_merge(self::$common_attrib, array('for')));
    }

    /**
     * Derrived method to create <iframe></iframe>
     *
     * @param mixed $attr Hash array with tag attributes or string with frame source (src)
     * @return string HTML code
     * @see html::tag()
     */
    public static function iframe($attr = null, $cont = null)
    {
        if (is_string($attr)) {
            $attr = array('src' => $attr);
        }
        return self::tag('iframe', $attr, $cont, array_merge(self::$common_attrib,
            array('src','name','width','height','border','frameborder')));
    }

    /**
     * Derrived method to create <script> tags
     *
     * @param mixed $attr Hash array with tag attributes or string with script source (src)
     * @return string HTML code
     * @see html::tag()
     */
    public static function script($attr, $cont = null)
    {
        if (is_string($attr)) {
            $attr = array('src' => $attr);
        }
        if ($cont) {
            if (self::$doctype == 'xhtml')
                $cont = "\n/* <![CDATA[ */\n" . $cont . "\n/* ]]> */\n";
            else
                $cont = "\n" . $cont . "\n";
        }

        return self::tag('script', $attr + array('type' => 'text/javascript', 'nl' => true),
            $cont, array_merge(self::$common_attrib, array('src','type','charset')));
    }

    /**
     * Derrived method for line breaks
     *
     * @return string HTML code
     * @see html::tag()
     */
    public static function br()
    {
        return self::tag('br');
    }

    /**
     * Create string with attributes
     *
     * @param array $attrib Associative arry with tag attributes
     * @param array $allowed List of allowed attributes
     * @return string Valid attribute string
     */
    public static function attrib_string($attrib = array(), $allowed = null)
    {
        if (empty($attrib)) {
            return '';
        }

        $allowed_f = array_flip((array)$allowed);
        $attrib_arr = array();
        foreach ($attrib as $key => $value) {
            // skip size if not numeric
            if (($key=='size' && !is_numeric($value))) {
                continue;
            }

            // ignore "internal" or not allowed attributes
            if ($key == 'nl' || ($allowed && !isset($allowed_f[$key])) || $value === null) {
                continue;
            }

            // skip empty eventhandlers
            if (preg_match('/^on[a-z]+/', $key) && !$value) {
                continue;
            }

            // attributes with no value
            if (in_array($key, array('checked', 'multiple', 'disabled', 'selected'))) {
                if ($value) {
                    $attrib_arr[] = $key . '="' . $key . '"';
                }
            }
            else if ($key=='value') {
                $attrib_arr[] = $key . '="' . Q($value, 'strict', false) . '"';
            }
            else {
                $attrib_arr[] = $key . '="' . Q($value) . '"';
            }
        }
        return count($attrib_arr) ? ' '.implode(' ', $attrib_arr) : '';
    }
}

/**
 * Class to create an HTML input field
 *
 * @package HTML
 */
class html_inputfield extends html
{
    protected $tagname = 'input';
    protected $type = 'text';
    protected $allowed = array('type','name','value','size','tabindex',
	'autocomplete','checked','onchange','onclick','disabled','readonly',
	'spellcheck','results','maxlength','src','multiple');

    /**
     * Object constructor
     *
     * @param array $attrib Associative array with tag attributes
     */
    public function __construct($attrib = array())
    {
        if (is_array($attrib)) {
            $this->attrib = $attrib;
        }

        if ($attrib['type']) {
            $this->type = $attrib['type'];
        }

        if ($attrib['newline']) {
            $this->newline = true;
        }
    }

    /**
     * Compose input tag
     *
     * @param string $value Field value
     * @param array  $attrib Additional attributes to override
     * @return string HTML output
     */
    public function show($value = null, $attrib = null)
    {
        // overwrite object attributes
        if (is_array($attrib)) {
            $this->attrib = array_merge($this->attrib, $attrib);
        }

        // set value attribute
        if ($value !== null) {
            $this->attrib['value'] = $value;
        }
        // set type
        $this->attrib['type'] = $this->type;
        return parent::show();
    }
}

/**
 * Class to create an HTML password field
 *
 * @package HTML
 */
class html_passwordfield extends html_inputfield
{
    protected $type = 'password';
}

/**
 * Class to create an hidden HTML input field
 *
 * @package HTML
 */

class html_hiddenfield extends html_inputfield
{
    protected $type = 'hidden';
    protected $fields_arr = array();
    protected $newline = true;

    /**
     * Constructor
     *
     * @param array $attrib Named tag attributes
     */
    public function __construct($attrib = null)
    {
        if (is_array($attrib)) {
            $this->add($attrib);
        }
    }

    /**
     * Add a hidden field to this instance
     *
     * @param array $attrib Named tag attributes
     */
    public function add($attrib)
    {
        $this->fields_arr[] = $attrib;
    }

    /**
     * Create HTML code for the hidden fields
     *
     * @return string Final HTML code
     */
    public function show()
    {
        $out = '';
        foreach ($this->fields_arr as $attrib) {
            $out .= self::tag($this->tagname, array('type' => $this->type) + $attrib);
        }
        return $out;
    }
}

/**
 * Class to create HTML radio buttons
 *
 * @package HTML
 */
class html_radiobutton extends html_inputfield
{
    protected $type = 'radio';

    /**
     * Get HTML code for this object
     *
     * @param string $value  Value of the checked field
     * @param array  $attrib Additional attributes to override
     * @return string HTML output
     */
    public function show($value = '', $attrib = null)
    {
        // overwrite object attributes
        if (is_array($attrib)) {
            $this->attrib = array_merge($this->attrib, $attrib);
        }

        // set value attribute
        $this->attrib['checked'] = ((string)$value == (string)$this->attrib['value']);

        return parent::show();
    }
}

/**
 * Class to create HTML checkboxes
 *
 * @package HTML
 */
class html_checkbox extends html_inputfield
{
    protected $type = 'checkbox';

    /**
     * Get HTML code for this object
     *
     * @param string $value  Value of the checked field
     * @param array  $attrib Additional attributes to override
     * @return string HTML output
     */
    public function show($value = '', $attrib = null)
    {
        // overwrite object attributes
        if (is_array($attrib)) {
            $this->attrib = array_merge($this->attrib, $attrib);
        }

        // set value attribute
        $this->attrib['checked'] = ((string)$value == (string)$this->attrib['value']);

        return parent::show();
    }
}

/**
 * Class to create an HTML textarea
 *
 * @package HTML
 */
class html_textarea extends html
{
    protected $tagname = 'textarea';
    protected $allowed = array('name','rows','cols','wrap','tabindex',
	'onchange','disabled','readonly','spellcheck');

    /**
     * Get HTML code for this object
     *
     * @param string $value  Textbox value
     * @param array  $attrib Additional attributes to override
     * @return string HTML output
     */
    public function show($value = '', $attrib = null)
    {
        // overwrite object attributes
        if (is_array($attrib)) {
            $this->attrib = array_merge($this->attrib, $attrib);
        }

        // take value attribute as content
        if (empty($value) && !empty($this->attrib['value'])) {
            $value = $this->attrib['value'];
        }

        // make shure we don't print the value attribute
        if (isset($this->attrib['value'])) {
            unset($this->attrib['value']);
        }

        if (!empty($value) && !preg_match('/mce_editor/', $this->attrib['class'])) {
            $value = Q($value, 'strict', false);
        }

        return self::tag($this->tagname, $this->attrib, $value,
	    array_merge(self::$common_attrib, $this->allowed));
    }
}

/**
 * Builder for HTML drop-down menus
 * Syntax:<pre>
 * // create instance. arguments are used to set attributes of select-tag
 * $select = new html_select(array('name' => 'fieldname'));
 *
 * // add one option
 * $select->add('Switzerland', 'CH');
 *
 * // add multiple options
 * $select->add(array('Switzerland','Germany'), array('CH','DE'));
 *
 * // generate pulldown with selection 'Switzerland'  and return html-code
 * // as second argument the same attributes available to instanciate can be used
 * print $select->show('CH');
 * </pre>
 *
 * @package HTML
 */
class html_select extends html
{
    protected $tagname = 'select';
    protected $options = array();
    protected $allowed = array('name','size','tabindex','autocomplete',
	'multiple','onchange','disabled','rel');
    
    /**
     * Add a new option to this drop-down
     *
     * @param mixed $names  Option name or array with option names
     * @param mixed $values Option value or array with option values
     */
    public function add($names, $values = null)
    {
        if (is_array($names)) {
            foreach ($names as $i => $text) {
                $this->options[] = array('text' => $text, 'value' => $values[$i]);
            }
        }
        else {
            $this->options[] = array('text' => $names, 'value' => $values);
        }
    }

    /**
     * Get HTML code for this object
     *
     * @param string $select Value of the selection option
     * @param array  $attrib Additional attributes to override
     * @return string HTML output
     */
    public function show($select = array(), $attrib = null)
    {
        // overwrite object attributes
        if (is_array($attrib)) {
            $this->attrib = array_merge($this->attrib, $attrib);
        }

        $this->content = "\n";
        $select = (array)$select;
        foreach ($this->options as $option) {
            $attr = array(
                'value' => $option['value'],
                'selected' => (in_array($option['value'], $select, true) ||
                  in_array($option['text'], $select, true)) ? 1 : null);

            $this->content .= self::tag('option', $attr, Q($option['text']));
        }
        return parent::show();
    }
}


/**
 * Class to build an HTML table
 *
 * @package HTML
 */
class html_table extends html
{
    protected $tagname = 'table';
    protected $allowed = array('id','class','style','width','summary',
	    'cellpadding','cellspacing','border');

    private $header = array();
    private $rows = array();
    private $rowindex = 0;
    private $colindex = 0;

    /**
     * Constructor
     *
     * @param array $attrib Named tag attributes
     */
    public function __construct($attrib = array())
    {
        $default_attrib = self::$doctype == 'xhtml' ? array('summary' => '', 'border' => 0) : array();
        $this->attrib = array_merge($attrib, $default_attrib);
    }

    /**
     * Add a table cell
     *
     * @param array  $attr Cell attributes
     * @param string $cont Cell content
     */
    public function add($attr, $cont)
    {
        if (is_string($attr)) {
            $attr = array('class' => $attr);
        }

        $cell = new stdClass;
        $cell->attrib = $attr;
        $cell->content = $cont;

        $this->rows[$this->rowindex]->cells[$this->colindex] = $cell;
        $this->colindex++;

        if ($this->attrib['cols'] && $this->colindex == $this->attrib['cols']) {
            $this->add_row();
        }
    }

    /**
     * Add a table header cell
     *
     * @param array  $attr Cell attributes
     * @param string $cont Cell content
     */
    public function add_header($attr, $cont)
    {
        if (is_string($attr))
    	    $attr = array('class' => $attr);

        $cell = new stdClass;
        $cell->attrib = $attr;
        $cell->content = $cont;
        $this->header[] = $cell;
    }

     /**
     * Remove a column from a table
     * Useful for plugins making alterations
     * 
     * @param string $class 
     */
    public function remove_column($class)
    {
        // Remove the header
        foreach ($this->header as $index=>$header){
            if ($header->attrib['class'] == $class){
                unset($this->header[$index]);
                break;
            }
        }

        // Remove cells from rows
        foreach ($this->rows as $i=>$row){
            foreach ($row->cells as $j=>$cell){
                if ($cell->attrib['class'] == $class){
                    unset($this->rows[$i]->cells[$j]);
                    break;
                }
            }
        }
    }

    /**
     * Jump to next row
     *
     * @param array $attr Row attributes
     */
    public function add_row($attr = array())
    {
        $this->rowindex++;
        $this->colindex = 0;
        $this->rows[$this->rowindex] = new stdClass;
        $this->rows[$this->rowindex]->attrib = $attr;
        $this->rows[$this->rowindex]->cells = array();
    }

    /**
     * Set row attributes
     *
     * @param array $attr  Row attributes
     * @param int   $index Optional row index (default current row index)
     */
    public function set_row_attribs($attr = array(), $index = null)
    {
        if (is_string($attr))
    	    $attr = array('class' => $attr);

        if ($index === null)
            $index = $this->rowindex;

        $this->rows[$index]->attrib = $attr;
    }

    /**
     * Get row attributes
     *
     * @param int $index Row index
     *
     * @return array Row attributes
     */
    public function get_row_attribs($index = null)
    {
        if ($index === null)
            $index = $this->rowindex;

        return $this->rows[$index] ? $this->rows[$index]->attrib : null;
    }

    /**
     * Build HTML output of the table data
     *
     * @param array $attrib Table attributes
     * @return string The final table HTML code
     */
    public function show($attrib = null)
    {
        if (is_array($attrib))
            $this->attrib = array_merge($this->attrib, $attrib);

        $thead = $tbody = "";

        // include <thead>
        if (!empty($this->header)) {
            $rowcontent = '';
            foreach ($this->header as $c => $col) {
                $rowcontent .= self::tag('td', $col->attrib, $col->content);
            }
            $thead = self::tag('thead', null, self::tag('tr', null, $rowcontent, parent::$common_attrib));
        }

        foreach ($this->rows as $r => $row) {
            $rowcontent = '';
            foreach ($row->cells as $c => $col) {
                $rowcontent .= self::tag('td', $col->attrib, $col->content);
            }

            if ($r < $this->rowindex || count($row->cells)) {
                $tbody .= self::tag('tr', $row->attrib, $rowcontent, parent::$common_attrib);
            }
        }

        if ($this->attrib['rowsonly']) {
            return $tbody;
        }

        // add <tbody>
        $this->content = $thead . self::tag('tbody', null, $tbody);

        unset($this->attrib['cols'], $this->attrib['rowsonly']);
        return parent::show();
    }

    /**
     * Count number of rows
     *
     * @return The number of rows
     */
    public function size()
    {
      return count($this->rows);
    }

    /**
     * Remove table body (all rows)
     */
    public function remove_body()
    {
        $this->rows     = array();
        $this->rowindex = 0;
    }

}