xref: /dokuwiki/inc/Ui/Revisions.php (revision b22e7f793fc733e907619e1a8843f318f817b138) 
1<?php
2
3namespace dokuwiki\Ui;
4
5use dokuwiki\ChangeLog\PageChangeLog;
6use dokuwiki\ChangeLog\MediaChangeLog;
7use dokuwiki\Form\Form;
8
9/**
10 * DokuWiki Revisions Interface
11 *
12 * @package dokuwiki\Ui
13 */
14class Revisions extends Ui
15{
16    protected $first;
17    protected $media_id;
18
19    /**
20     * Revisions Ui constructor
21     *
22     * @param int $first  skip the first n changelog lines
23     * @param bool|string $media_id  id of media, or false for current page
24     */
25    public function __construct($first = 0, $media_id = false)
26    {
27        $this->first    = $first;
28        $this->media_id = $media_id;
29    }
30
31    /**
32     * Display list of old revisions
33     *
34     * @author Andreas Gohr <andi@splitbrain.org>
35     * @author Ben Coburn <btcoburn@silicodon.net>
36     * @author Kate Arzamastseva <pshns@ukr.net>
37     * @author Satoshi Sahara <sahara.satoshi@gmail.com>
38     *
39     * @return void
40     */
41    public function show()
42    {
43        global $ID;
44
45        if ($this->media_id) {
46            return $this->showMediaRevisions($this->media_id);
47        } else {
48            return $this->showPageRevisions($ID);
49        }
50    }
51
52    /**
53     * Display a list of Media Revisions in the MediaManager
54     *
55     * @param string $id  media id
56     * @return void
57     */
58    protected function showMediaRevisions($id)
59    {
60        global $lang;
61
62        // get revisions, and set correct pagenation parameters (first, hasNext)
63        $first   = $this->first;
64        $hasNext = false;
65        $revisions = $this->getRevisions($first, $hasNext);
66
67        // create the form
68        $form = new Form([
69                'id' => 'page__revisions', // must not be "media__revisions"
70                'action' => media_managerURL(['image' => $id], '&'),
71                'class'  => 'changes',
72        ]);
73        $form->setHiddenField('mediado', 'diff'); // required for media revisions
74        $form->addTagOpen('div')->addClass('no');
75
76        // start listing
77        $form->addTagOpen('ul');
78        foreach ($revisions as $info) {
79            $rev = $info['date'];
80            $class = ($info['type'] === DOKU_CHANGE_TYPE_MINOR_EDIT) ? 'minor' : '';
81            $form->addTagOpen('li')->addClass($class);
82            $form->addTagOpen('div')->addClass('li');
83
84            if (isset($info['current'])) {
85               $form->addCheckbox('rev2[]')->val('current');
86            } elseif (file_exists(mediaFN($id, $rev))) {
87                $form->addCheckbox('rev2[]')->val($rev);
88            } else {
89                $form->addCheckbox('')->val($rev)->attr('disabled','disabled');
90            }
91            $form->addHTML(' ');
92
93            $objRevInfo = $this->getObjRevInfo($info);
94            $html = implode(' ', [
95                $objRevInfo->editDate(),          // edit date and time
96                $objRevInfo->difflink(),          // link to diffview icon
97                $objRevInfo->itemName(),          // name of page or media
98                '<div>',
99                $objRevInfo->editSummary(),       // edit summary
100                $objRevInfo->editor(),            // editor info
101                html_sizechange($info['sizechange']), // size change indicator
102                $objRevInfo->currentIndicator(),  // current indicator (only when k=1)
103                '</div>',
104            ]);
105            $form->addHTML($html);
106
107            $form->addTagClose('div');
108            $form->addTagClose('li');
109        }
110        $form->addTagClose('ul');  // end of revision list
111
112        // show button for diff view
113        $form->addButton('do[diff]', $lang['diff2'])->attr('type', 'submit');
114
115        $form->addTagClose('div'); // close div class=no
116
117        print $form->toHTML('Revisions');
118
119        // provide navigation for pagenated revision list (of pages and/or media files)
120        print $this->htmlNavigation($id, $first, $hasNext);
121    }
122
123    /**
124     * Display a list of Page Revisions
125     *
126     * @return void
127     */
128    protected function showPageRevisions($id)
129    {
130        global $lang;
131
132        // get revisions, and set correct pagenation parameters (first, hasNext)
133        $first   = $this->first;
134        $hasNext = false;
135        $revisions = $this->getRevisions($first, $hasNext);
136
137        // print intro
138        print p_locale_xhtml('revisions');
139
140        // create the form
141        $form = new Form([
142                'id' => 'page__revisions',
143                'class' => 'changes',
144        ]);
145        $form->addTagOpen('div')->addClass('no');
146
147        // start listing
148        $form->addTagOpen('ul');
149        foreach ($revisions as $info) {
150            $rev = $info['date'];
151            $class = ($info['type'] === DOKU_CHANGE_TYPE_MINOR_EDIT) ? 'minor' : '';
152            $form->addTagOpen('li')->addClass($class);
153            $form->addTagOpen('div')->addClass('li');
154
155            if (page_exists($id, $rev)) {
156                $form->addCheckbox('rev2[]')->val($rev);
157            } else {
158                $form->addCheckbox('')->val($rev)->attr('disabled','disabled');
159            }
160            $form->addHTML(' ');
161
162            $objRevInfo = $this->getObjRevInfo($info);
163            $html = implode(' ', [
164                $objRevInfo->editDate(),          // edit date and time
165                $objRevInfo->difflink(),          // link to diffview icon
166                $objRevInfo->itemName(),          // name of page or media
167                $objRevInfo->editSummary(),       // edit summary
168                $objRevInfo->editor(),            // editor info
169                $objRevInfo->sizechange(),        // size change indicator
170                $objRevInfo->currentIndicator(),  // current indicator (only when k=1)
171            ]);
172            $form->addHTML($html);
173            $form->addTagClose('div');
174            $form->addTagClose('li');
175        }
176        $form->addTagClose('ul');  // end of revision list
177
178        // show button for diff view
179        $form->addButton('do[diff]', $lang['diff2'])->attr('type', 'submit');
180
181        $form->addTagClose('div'); // close div class=no
182
183        print $form->toHTML('Revisions');
184
185        // provide navigation for pagenated revision list (of pages and/or media files)
186        print $this->htmlNavigation($id, $first, $hasNext);
187    }
188
189
190    /**
191     * Get revisions, and set correct pagenation parameters (first, hasNext)
192     *
193     * @param int  $first
194     * @param bool $hasNext
195     * @return array  revisions to be shown in a pagenated list
196     */
197    protected function getRevisions(&$first, &$hasNext)
198    {
199        global $INFO, $conf;
200
201        if ($this->media_id) {
202            $changelog = new MediaChangeLog($this->media_id);
203        } else {
204            $changelog = new PageChangeLog($INFO['id']);
205        }
206
207        $revisions = [];
208
209        /* we need to get one additional log entry to be able to
210         * decide if this is the last page or is there another one.
211         * see also Ui\Recent::getRecents()
212         */
213        $revlist = $changelog->getRevisions($first, $conf['recent'] +1);
214        if (count($revlist) == 0 && $first != 0) {
215            $first = 0;
216            $revlist = $changelog->getRevisions($first, $conf['recent'] +1);
217        }
218        $exists = ($this->media_id) ? file_exists(mediaFN($this->media_id)) : $INFO['exists'];
219        if ($first === 0 && $exists) {
220            // add current page or media as revision[0]
221            if ($this->media_id) {
222                $rev = filemtime(fullpath(mediaFN($this->media_id)));
223                $revisions[] = $changelog->getRevisionInfo($rev) + array(
224                        'media' => true,
225                        'current' => true,
226                );
227            } else {
228                $revisions[] = array(
229                        'date' => $INFO['lastmod'],
230                        'ip'   => null,
231                        'type' => $INFO['meta']['last_change']['type'],
232                        'id'   => $INFO['id'],
233                        'user' => $INFO['editor'],
234                        'sum'  => $INFO['sum'],
235                        'extra' => null,
236                        'sizechange' => $INFO['meta']['last_change']['sizechange'],
237                        'current' => true,
238                );
239            }
240        }
241
242        // decide if this is the last page or is there another one
243        $hasNext = false;
244        if (count($revlist) > $conf['recent']) {
245            $hasNext = true;
246            array_pop($revlist); // remove one additional log entry
247        }
248
249        // append each revison info array to the revisions
250        foreach ($revlist as $rev) {
251            if ($this->media_id) {
252                $revisions[] = $changelog->getRevisionInfo($rev) + array('media' => true);
253            } else {
254                $revisions[] = $changelog->getRevisionInfo($rev);
255            }
256        }
257        return $revisions;
258    }
259
260    /**
261     * Navigation buttons for Pagenation (prev/next)
262     *
263     * @param string $id  page id or media id
264     * @param int  $first
265     * @param bool $hasNext
266     * @return array  html
267     */
268    protected function htmlNavigation($id, $first, $hasNext)
269    {
270        global $conf;
271
272        $html = '<div class="pagenav">';
273        $last = $first + $conf['recent'];
274        if ($first > 0) {
275            $first = max($first - $conf['recent'], 0);
276            $html.= '<div class="pagenav-prev">';
277            if ($this->media_id) {
278                $html.= html_btn('newer', $id, "p", media_managerURL(['first' => $first], '&', false, true));
279            } else {
280                $html.= html_btn('newer', $id, "p" ,['do' => 'revisions', 'first' => $first]);
281            }
282            $html.= '</div>';
283        }
284        if ($hasNext) {
285            $html.= '<div class="pagenav-next">';
286            if ($this->media_id) {
287                $html.= html_btn('older', $id, "n", media_managerURL(['first' => $last], '&', false, true));
288            } else {
289                $html.= html_btn('older', $id, "n", ['do' => 'revisions', 'first' => $last]);
290            }
291            $html.= '</div>';
292        }
293        $html.= '</div>';
294        return $html;
295    }
296
297    /**
298     * Returns instance of objRevInfo
299     *
300     * @param array $info  Revision info structure of a page or media file
301     * @return objRevInfo object (anonymous class)
302     */
303    protected function getObjRevInfo(array $info)
304    {
305        return new class ($info) // anonymous class (objRevInfo)
306        {
307            protected $info;
308
309            public function __construct(array $info)
310            {
311                $this->info = $info;
312            }
313
314            // current indicator
315            public function currentIndicator()
316            {
317                global $lang;
318                return ($this->info['current']) ? '('.$lang['current'].')' : '';
319            }
320
321            // edit date and time of the page or media file
322            public function editDate()
323            {
324                return '<span class="date">'. dformat($this->info['date']) .'</span>';
325            }
326
327            // edit summary
328            public function editSummary()
329            {
330                return '<span class="sum">'.' – '. hsc($this->info['sum']).'</span>';
331            }
332
333            // editor of the page or media file
334            public function editor()
335            {
336                // slightly different with display of Ui\Recent, i.e. external edit
337                global $lang;
338                $html = '<span class="user">';
339                if (!$this->info['user'] && !$this->info['ip']) {
340                    $html.= '('.$lang['external_edit'].')';
341                } elseif ($this->info['user']) {
342                    $html.= '<bdi>'. editorinfo($this->info['user']) .'</bdi>';
343                    if (auth_ismanager()) $html.= ' <bdo dir="ltr">('. $this->info['ip'] .')</bdo>';
344                } else {
345                    $html.= '<bdo dir="ltr">'. $this->info['ip'] .'</bdo>';
346                }
347                $html.= '</span>';
348                return $html;
349            }
350
351            // name of the page or media file
352            public function itemName()
353            {
354                // slightly different with display of Ui\Recent, i.e. revison may not exists
355                $id = $this->info['id'];
356                $rev = $this->info['date'];
357
358                if (isset($this->info['media'])) {
359                    // media file revision
360                    if (isset($this->info['current'])) {
361                        $href = media_managerURL(['image'=> $id, 'tab_details'=> 'view'], '&');
362                        $html = '<a href="'.$href.'" class="wikilink1">'.$id.'</a>';
363                    } elseif (file_exists(mediaFN($id, $rev))) {
364                        $href = media_managerURL(['image'=> $id, 'tab_details'=> 'view', 'rev'=> $rev], '&');
365                        $html = '<a href="'.$href.'" class="wikilink1">'.$id.'</a>';
366                    } else {
367                        $html = $id;
368                    }
369                    return $html;
370                } else {
371                    // page revision
372                    $display_name = useHeading('navigation') ? hsc(p_get_first_heading($id)) : $id;
373                    if (!$display_name) $display_name = $id;
374                    if ($this->info['current'] || page_exists($id, $rev)) {
375                        $href = wl($id, "rev=$rev", false, '&');
376                        $html = '<a href="'.$href.'" class="wikilink1">'.$display_name.'</a>';
377                    } else {
378                        $html = $display_name;
379                    }
380                    return $html;
381                }
382            }
383
384            // icon difflink
385            public function difflink()
386            {
387                global $lang;
388                $id = $this->info['id'];
389                $rev = $this->info['date'];
390
391                if (isset($this->info['media'])) {
392                    // media file revision
393                    if (isset($this->info['current']) || !file_exists(mediaFN($id, $rev))) {
394                        $html = '<img src="'.DOKU_BASE.'lib/images/blank.gif" width="15" height="11" alt="" />';
395                    } else {
396                        $href = media_managerURL(['image'=> $id, 'rev'=> $rev, 'mediado'=>'diff'], '&');
397                        $html = '<a href="'.$href.'" class="diff_link">'
398                              . '<img src="'.DOKU_BASE.'lib/images/diff.png" width="15" height="11"'
399                              . ' title="'. $lang['diff'] .'" alt="'.$lang['diff'] .'" />'
400                              . '</a> ';
401                    }
402                    return $html;
403                } else {
404                    // page revision
405                    if ($this->info['current'] || !page_exists($id, $rev)) {
406                        $html = '<img src="'.DOKU_BASE.'lib/images/blank.gif" width="15" height="11" alt="" />';
407                    } else {
408                        $href = wl($id, "rev=$rev,do=diff", false, '&');
409                        $html = '<a href="'.$href.'" class="diff_link">'
410                              . '<img src="'.DOKU_BASE.'lib/images/diff.png" width="15" height="11"'
411                              . ' title="'.$lang['diff'].'" alt="'.$lang['diff'].'" />'
412                              . '</a>';
413                    }
414                    return $html;
415                }
416            }
417
418            // size change
419            public function sizeChange()
420            {
421                $class = 'sizechange';
422                $value = filesize_h(abs($this->info['sizechange']));
423                if ($this->info['sizechange'] > 0) {
424                    $class .= ' positive';
425                    $value = '+' . $value;
426                } elseif ($this->info['sizechange'] < 0) {
427                    $class .= ' negative';
428                    $value = '-' . $value;
429                } else {
430                    $value = '±' . $value;
431                }
432                return '<span class="'.$class.'">'.$value.'</span>';
433            }
434        }; // end of anonymous class (objRevInfo)
435    }
436
437}
438