xref: /plugin/pagesicon/action.php (revision 74a9e7636f2e172c4b5990b529a0ab322717c972) 
1<?php
2if(!defined('DOKU_INC')) die();
3
4class action_plugin_pagesicon extends DokuWiki_Action_Plugin {
5
6	public function register(Doku_Event_Handler $controller) {
7		$controller->register_hook('TPL_CONTENT_DISPLAY', 'BEFORE', $this, '_displaypageicon');
8		$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'setPageFavicon');
9		$controller->register_hook('ACTION_ACT_PREPROCESS', 'BEFORE', $this, 'handleAction');
10		$controller->register_hook('TPL_ACT_RENDER', 'BEFORE', $this, 'renderAction');
11		$controller->register_hook('MENU_ITEMS_ASSEMBLY', 'AFTER', $this, 'addPageAction');
12	}
13
14	public function addPageAction(Doku_Event $event): void
15	{
16		global $ID;
17
18		if (($event->data['view'] ?? '') !== 'page') return;
19		if (auth_quickaclcheck((string)$ID) < AUTH_UPLOAD) return;
20
21		foreach (($event->data['items'] ?? []) as $item) {
22			if ($item instanceof \dokuwiki\Menu\Item\AbstractItem && $item->getType() === 'pagesicon') {
23				return;
24			}
25		}
26
27		$label = (string)$this->getLang('page_action');
28		if ($label === '') $label = 'Gerer l\'icone';
29		$title = (string)$this->getLang('page_action_title');
30		if ($title === '') $title = $label;
31		$targetPage = cleanID((string)$ID);
32
33		$event->data['items'][] = new class($targetPage, $label, $title) extends \dokuwiki\Menu\Item\AbstractItem {
34			public function __construct(string $targetPage, string $label, string $title)
35			{
36				parent::__construct();
37				$this->type = 'pagesicon';
38				$this->id = $targetPage;
39				$this->params = [
40					'do' => 'pagesicon',
41				];
42				$this->label = $label;
43				$this->title = $title;
44				$this->svg = DOKU_INC . 'lib/images/menu/folder-multiple-image.svg';
45			}
46		};
47	}
48
49	private function getIconSize(): int {
50		$size = (int)$this->getConf('icon_size');
51		if($size < 8) return 55;
52		if($size > 512) return 512;
53		return $size;
54	}
55
56	public function setPageFavicon(Doku_Event $event): void
57	{
58		global $ACT, $ID;
59
60		if (!(bool)$this->getConf('show_as_favicon')) return;
61		if ($ACT !== 'show') return;
62
63		$pageID = noNS((string)$ID);
64		if ($pageID === 'sidebar' || $pageID === 'footer') return;
65
66		$helper = plugin_load('helper', 'pagesicon');
67		if (!$helper) return;
68
69		$namespace = getNS((string)$ID);
70		$iconMediaID = $helper->getPageImage($namespace, $pageID, 'smallorbig');
71		if (!$iconMediaID) return;
72
73		$favicon = html_entity_decode((string)ml($iconMediaID, ['w' => 32]), ENT_QUOTES | ENT_HTML5, 'UTF-8');
74		$favicon = $this->addVersionToUrl($favicon, $this->getMediaVersionStamp($iconMediaID), false);
75		if (!$favicon) return;
76
77		if (!isset($event->data['link']) || !is_array($event->data['link'])) {
78			$event->data['link'] = [];
79		}
80
81		$links = [];
82		foreach ($event->data['link'] as $link) {
83			if (!is_array($link)) {
84				$links[] = $link;
85				continue;
86			}
87
88			$rels = $link['rel'] ?? '';
89			if (!is_array($rels)) {
90				$rels = preg_split('/\s+/', strtolower(trim((string)$rels))) ?: [];
91			}
92			$rels = array_filter(array_map('strtolower', (array)$rels));
93			if (in_array('icon', $rels, true)) {
94				continue;
95			}
96			$links[] = $link;
97		}
98
99		$links[] = ['rel' => 'icon', 'href' => $favicon];
100		$links[] = ['rel' => 'shortcut icon', 'href' => $favicon];
101		$event->data['link'] = $links;
102	}
103
104	private function hasIconAlready(string $html, string $mediaID): bool {
105		return strpos($html, 'class="pagesicon-injected"') !== false;
106	}
107
108	private function getMediaVersionStamp(string $mediaID): string
109	{
110		$file = mediaFN($mediaID);
111		if (!@file_exists($file)) return '';
112		$mtime = @filemtime($file);
113		if (!$mtime) return '';
114		return (string)$mtime;
115	}
116
117	private function addVersionToUrl(string $url, string $version, bool $htmlEncodedAmp = true): string
118	{
119		if ($url === '' || $version === '') return $url;
120		$sep = strpos($url, '?') === false ? '?' : ($htmlEncodedAmp ? '&amp;' : '&');
121		return $url . $sep . 'pi_ts=' . rawurlencode($version);
122	}
123
124	private function injectFaviconRuntimeScript(string &$html, string $faviconHref): void
125	{
126		if ($faviconHref === '') return;
127
128		$href = json_encode($faviconHref);
129		$script = '<script>(function(){'
130			. 'var href=' . $href . ';'
131			. 'if(!href||!document.head)return;'
132			. 'var links=document.head.querySelectorAll(\'link[rel*="icon"]\');'
133			. 'for(var i=0;i<links.length;i++){links[i].parentNode.removeChild(links[i]);}'
134			. 'var icon=document.createElement("link");icon.rel="icon";icon.href=href;document.head.appendChild(icon);'
135			. 'var shortcut=document.createElement("link");shortcut.rel="shortcut icon";shortcut.href=href;document.head.appendChild(shortcut);'
136			. '})();</script>';
137
138		$html = $script . $html;
139	}
140
141	private function getAllowedExtensions(): array
142	{
143		$raw = trim((string)$this->getConf('extensions'));
144		if ($raw === '') return ['svg', 'png', 'jpg', 'jpeg'];
145
146		$extensions = array_values(array_unique(array_filter(array_map(function ($ext) {
147			return strtolower(ltrim(trim((string)$ext), '.'));
148		}, explode(';', $raw)))));
149
150		return $extensions ?: ['svg', 'png', 'jpg', 'jpeg'];
151	}
152
153	private function canUploadToTarget(string $targetPage): bool
154	{
155		if ($targetPage === '') return false;
156		return auth_quickaclcheck($targetPage) >= AUTH_UPLOAD;
157	}
158
159	private function getDefaultTarget(): string
160	{
161		global $ID;
162		return cleanID((string)$ID);
163	}
164
165	private function getDefaultVariant(): string
166	{
167		global $INPUT;
168		$defaultVariant = strtolower($INPUT->str('icon_variant'));
169		if (!in_array($defaultVariant, ['big', 'small'], true)) {
170			$defaultVariant = 'big';
171		}
172		return $defaultVariant;
173	}
174
175	private function getVariantTemplates(string $variant): array
176	{
177		$raw = $variant === 'small'
178			? (string)$this->getConf('icon_thumbnail_name')
179			: (string)$this->getConf('icon_name');
180
181		$templates = array_values(array_unique(array_filter(array_map('trim', explode(';', $raw)))));
182		if (!$templates) {
183			return [$variant === 'small' ? 'thumbnail' : 'icon'];
184		}
185		return $templates;
186	}
187
188	private function normalizeBaseName(string $name): string
189	{
190		$name = trim($name);
191		if ($name === '') return '';
192		$name = noNS($name);
193		$name = preg_replace('/\.[a-z0-9]+$/i', '', $name);
194		$name = cleanID($name);
195		return str_replace(':', '', $name);
196	}
197
198	private function getUploadNameChoices(string $targetPage, string $variant): array
199	{
200		$pageID = noNS($targetPage);
201		$choices = [];
202
203		foreach ($this->getVariantTemplates($variant) as $tpl) {
204			$resolved = str_replace('~pagename~', $pageID, $tpl);
205			$base = $this->normalizeBaseName($resolved);
206			if ($base === '') continue;
207			$choices[$base] = $base . '.ext';
208		}
209
210		if (!$choices) {
211			$fallback = $variant === 'small' ? 'thumbnail' : 'icon';
212			$choices[$fallback] = $fallback . '.ext';
213		}
214
215		return $choices;
216	}
217
218	private function getPostedBaseName(array $choices): string
219	{
220		global $INPUT;
221		$selected = $this->normalizeBaseName($INPUT->post->str('icon_filename'));
222		if ($selected !== '' && isset($choices[$selected])) return $selected;
223		return (string)array_key_first($choices);
224	}
225
226	private function getMediaManagerUrl(string $targetPage): string
227	{
228		$namespace = getNS($targetPage);
229		return DOKU_BASE . 'lib/exe/mediamanager.php?ns=' . rawurlencode($namespace);
230	}
231
232	private function notifyIconUpdated(string $targetPage, string $action, string $mediaID = ''): void
233	{
234		/** @var helper_plugin_pagesicon|null $helper */
235		$helper = plugin_load('helper', 'pagesicon');
236		if ($helper && method_exists($helper, 'notifyIconUpdated')) {
237			$helper->notifyIconUpdated($targetPage, $action, $mediaID);
238			return;
239		}
240
241		global $conf;
242		@io_saveFile($conf['cachedir'] . '/purgefile', time());
243		$data = [
244			'target_page' => cleanID($targetPage),
245			'action' => $action,
246			'media_id' => cleanID($mediaID),
247		];
248		\dokuwiki\Extension\Event::createAndTrigger('PLUGIN_PAGESICON_UPDATED', $data);
249	}
250
251	private function handleDeletePost(): void
252	{
253		global $INPUT, $ID;
254
255		if (!$INPUT->post->has('pagesicon_delete_submit')) return;
256		if (!checkSecurityToken()) return;
257
258		$targetPage = cleanID((string)$ID);
259		$mediaID = cleanID($INPUT->post->str('media_id'));
260
261		if ($targetPage === '' || $mediaID === '') {
262			msg($this->getLang('error_delete_invalid'), -1);
263			return;
264		}
265		if (!$this->canUploadToTarget($targetPage)) {
266			msg($this->getLang('error_no_upload_permission'), -1);
267			return;
268		}
269		$namespace = getNS($targetPage);
270		$pageID = noNS($targetPage);
271		$helper = plugin_load('helper', 'pagesicon');
272		$currentBig = ($helper && method_exists($helper, 'getPageImage')) ? (string)$helper->getPageImage($namespace, $pageID, 'big') : '';
273		$currentSmall = ($helper && method_exists($helper, 'getPageImage')) ? (string)$helper->getPageImage($namespace, $pageID, 'small') : '';
274		$allowed = array_values(array_filter(array_unique([$currentBig, $currentSmall])));
275		if (!$allowed || !in_array($mediaID, $allowed, true)) {
276			msg($this->getLang('error_delete_invalid'), -1);
277			return;
278		}
279
280		$file = mediaFN($mediaID);
281		if (!@file_exists($file)) {
282			msg($this->getLang('error_delete_not_found'), -1);
283			return;
284		}
285		if (!@unlink($file)) {
286			msg($this->getLang('error_delete_failed'), -1);
287			return;
288		}
289
290		$this->notifyIconUpdated($targetPage, 'delete', $mediaID);
291		msg(sprintf($this->getLang('delete_success'), hsc($mediaID)), 1);
292	}
293
294	private function handleUploadPost(): void
295	{
296		global $INPUT, $ID;
297
298		if (!$INPUT->post->has('pagesicon_upload_submit')) return;
299		if (!checkSecurityToken()) return;
300
301		$targetPage = cleanID((string)$ID);
302		if (!$this->canUploadToTarget($targetPage)) {
303			msg($this->getLang('error_no_upload_permission'), -1);
304			return;
305		}
306
307		$variant = strtolower($INPUT->post->str('icon_variant'));
308		if (!in_array($variant, ['big', 'small'], true)) {
309			$variant = 'big';
310		}
311
312		if (!isset($_FILES['pagesicon_file']) || !is_array($_FILES['pagesicon_file'])) {
313			msg($this->getLang('error_missing_file'), -1);
314			return;
315		}
316
317		$upload = $_FILES['pagesicon_file'];
318		if (($upload['error'] ?? UPLOAD_ERR_NO_FILE) !== UPLOAD_ERR_OK) {
319			msg($this->getLang('error_upload_failed') . ' (' . (int)($upload['error'] ?? -1) . ')', -1);
320			return;
321		}
322
323		$originalName = (string)($upload['name'] ?? '');
324		$tmpName = (string)($upload['tmp_name'] ?? '');
325		if ($tmpName === '' || !is_uploaded_file($tmpName)) {
326			msg($this->getLang('error_upload_failed'), -1);
327			return;
328		}
329
330		$ext = strtolower((string)pathinfo($originalName, PATHINFO_EXTENSION));
331		if ($ext === '') {
332			msg($this->getLang('error_extension_missing'), -1);
333			return;
334		}
335
336		$allowed = $this->getAllowedExtensions();
337		if (!in_array($ext, $allowed, true)) {
338			msg(sprintf($this->getLang('error_extension_not_allowed'), hsc($ext), hsc(implode(', ', $allowed))), -1);
339			return;
340		}
341
342		$choices = $this->getUploadNameChoices($targetPage, $variant);
343		$base = $this->getPostedBaseName($choices);
344		$namespace = getNS($targetPage);
345		$mediaBase = $namespace !== '' ? ($namespace . ':' . $base) : $base;
346		$mediaID = cleanID($mediaBase . '.' . $ext);
347		$targetFile = mediaFN($mediaID);
348
349		io_makeFileDir($targetFile);
350		if (!@is_dir(dirname($targetFile))) {
351			msg($this->getLang('error_write_dir'), -1);
352			return;
353		}
354
355		$moved = @move_uploaded_file($tmpName, $targetFile);
356		if (!$moved) {
357			$moved = @copy($tmpName, $targetFile);
358		}
359		if (!$moved) {
360			msg($this->getLang('error_write_file'), -1);
361			return;
362		}
363
364		@chmod($targetFile, 0664);
365		$this->notifyIconUpdated($targetPage, 'upload', $mediaID);
366		msg(sprintf($this->getLang('upload_success'), hsc($mediaID)), 1);
367	}
368
369	private function renderUploadForm(): void
370	{
371		global $ID, $INPUT;
372
373		$defaultTarget = $this->getDefaultTarget();
374		$defaultVariant = $this->getDefaultVariant();
375		$allowed = implode(', ', $this->getAllowedExtensions());
376		$currentChoices = $this->getUploadNameChoices($defaultTarget, $defaultVariant);
377		$selectedBase = $this->normalizeBaseName($INPUT->str('icon_filename'));
378		if (!isset($currentChoices[$selectedBase])) {
379			$selectedBase = (string)array_key_first($currentChoices);
380		}
381		$bigTemplates = json_encode($this->getVariantTemplates('big'));
382		$smallTemplates = json_encode($this->getVariantTemplates('small'));
383		$filenameHelp = hsc($this->getLang('icon_filename_help'));
384		$actionPage = $defaultTarget !== '' ? $defaultTarget : cleanID((string)$ID);
385		$namespace = getNS($defaultTarget);
386		$pageID = noNS($defaultTarget);
387		$helper = plugin_load('helper', 'pagesicon');
388		$currentBig = ($helper && method_exists($helper, 'getPageImage')) ? $helper->getPageImage($namespace, $pageID, 'big') : false;
389		$currentSmall = ($helper && method_exists($helper, 'getPageImage')) ? $helper->getPageImage($namespace, $pageID, 'small') : false;
390
391		echo '<h1>' . hsc($this->getLang('menu')) . '</h1>';
392		echo '<p>' . hsc($this->getLang('intro')) . '</p>';
393		echo '<p><small>' . hsc(sprintf($this->getLang('allowed_extensions'), $allowed)) . '</small></p>';
394		echo '<div class="pagesicon-current-preview" style="display:flex;gap:24px;align-items:flex-start;flex-wrap:wrap;margin:10px 0 16px;">';
395		echo '<div class="pagesicon-current-item">';
396		echo '<strong>' . hsc($this->getLang('current_big_icon')) . '</strong><br />';
397		if ($currentBig) {
398			echo '<a href="' . hsc($this->getMediaManagerUrl($defaultTarget)) . '" target="_blank" title="' . hsc($this->getLang('open_media_manager')) . '">';
399			echo '<img src="' . ml($currentBig, ['w' => 55]) . '" alt="" width="55" style="display:block;margin:6px 0;" />';
400			echo '</a>';
401			echo '<small>' . hsc(noNS($currentBig)) . '</small>';
402			echo '<form action="' . wl($actionPage) . '" method="post" style="margin-top:6px;">';
403			formSecurityToken();
404			echo '<input type="hidden" name="do" value="pagesicon" />';
405			echo '<input type="hidden" name="media_id" value="' . hsc($currentBig) . '" />';
406			echo '<input type="hidden" name="pagesicon_delete_submit" value="1" />';
407			echo '<button type="submit" class="button">' . hsc($this->getLang('delete_icon')) . '</button>';
408			echo '</form>';
409		} else {
410			echo '<small>' . hsc($this->getLang('current_icon_none')) . '</small>';
411		}
412		echo '</div>';
413		echo '<div class="pagesicon-current-item">';
414		echo '<strong>' . hsc($this->getLang('current_small_icon')) . '</strong><br />';
415		if ($currentSmall) {
416			echo '<a href="' . hsc($this->getMediaManagerUrl($defaultTarget)) . '" target="_blank" title="' . hsc($this->getLang('open_media_manager')) . '">';
417			echo '<img src="' . ml($currentSmall, ['w' => 55]) . '" alt="" width="55" style="display:block;margin:6px 0;" />';
418			echo '</a>';
419			echo '<small>' . hsc(noNS($currentSmall)) . '</small>';
420			echo '<form action="' . wl($actionPage) . '" method="post" style="margin-top:6px;">';
421			formSecurityToken();
422			echo '<input type="hidden" name="do" value="pagesicon" />';
423			echo '<input type="hidden" name="media_id" value="' . hsc($currentSmall) . '" />';
424			echo '<input type="hidden" name="pagesicon_delete_submit" value="1" />';
425			echo '<button type="submit" class="button">' . hsc($this->getLang('delete_icon')) . '</button>';
426			echo '</form>';
427		} else {
428			echo '<small>' . hsc($this->getLang('current_icon_none')) . '</small>';
429		}
430		echo '</div>';
431		echo '</div>';
432
433		echo '<form action="' . wl($actionPage) . '" method="post" enctype="multipart/form-data">';
434		formSecurityToken();
435		echo '<input type="hidden" name="do" value="pagesicon" />';
436		echo '<input type="hidden" name="pagesicon_upload_submit" value="1" />';
437
438		echo '<div class="table"><table class="inline">';
439		echo '<tr>';
440		echo '<td class="label"><label for="pagesicon_icon_variant">' . hsc($this->getLang('icon_variant')) . '</label></td>';
441		echo '<td>';
442		echo '<select id="pagesicon_icon_variant" name="icon_variant" class="edit">';
443		echo '<option value="big"' . ($defaultVariant === 'big' ? ' selected="selected"' : '') . '>' . hsc($this->getLang('icon_variant_big')) . '</option>';
444		echo '<option value="small"' . ($defaultVariant === 'small' ? ' selected="selected"' : '') . '>' . hsc($this->getLang('icon_variant_small')) . '</option>';
445		echo '</select>';
446		echo '</td>';
447		echo '</tr>';
448
449		echo '<tr>';
450		echo '<td class="label"><label for="pagesicon_file">' . hsc($this->getLang('file')) . '</label></td>';
451		echo '<td><input type="file" id="pagesicon_file" name="pagesicon_file" class="edit" required /></td>';
452		echo '</tr>';
453
454		echo '<tr>';
455		echo '<td class="label"><label for="pagesicon_icon_filename">' . hsc($this->getLang('icon_filename')) . '</label></td>';
456		echo '<td>';
457		echo '<select id="pagesicon_icon_filename" name="icon_filename" class="edit">';
458		foreach ($currentChoices as $value => $label) {
459			$selected = $value === $selectedBase ? ' selected="selected"' : '';
460			echo '<option value="' . hsc($value) . '"' . $selected . '>' . hsc($label) . '</option>';
461		}
462		echo '</select>';
463		echo '<br /><small>' . $filenameHelp . '</small>';
464		echo '</td>';
465		echo '</tr>';
466		echo '</table></div>';
467
468		echo '<p><button type="submit" class="button">' . hsc($this->getLang('upload_button')) . '</button></p>';
469		echo '</form>';
470
471		echo '<script>(function(){'
472			. 'var variant=document.getElementById("pagesicon_icon_variant");'
473			. 'var filename=document.getElementById("pagesicon_icon_filename");'
474			. 'if(!variant||!filename)return;'
475			. 'var pageName=' . json_encode(noNS($defaultTarget)) . ';'
476			. 'var templates={big:' . $bigTemplates . ',small:' . $smallTemplates . '};'
477			. 'function cleanBase(name){name=(name||"").trim();if(!name)return"";'
478			. 'var parts=name.split(":");name=parts[parts.length-1]||"";'
479			. 'name=name.replace(/\\.[a-z0-9]+$/i,"");'
480			. 'name=name.replace(/[^a-zA-Z0-9_\\-]/g,"_").replace(/^_+|_+$/g,"");'
481			. 'return name;}'
482			. 'function updateChoices(){'
483			. 'var selected=filename.value;filename.innerHTML="";'
484			. 'var variantKey=(variant.value==="small")?"small":"big";'
485			. 'var seen={};'
486			. '(templates[variantKey]||[]).forEach(function(tpl){'
487			. 'var resolved=String(tpl||"").replace(/~pagename~/g,pageName);'
488			. 'var base=cleanBase(resolved);if(!base||seen[base])return;seen[base]=true;'
489			. 'var opt=document.createElement("option");opt.value=base;opt.textContent=base+".ext";filename.appendChild(opt);'
490			. '});'
491			. 'if(!filename.options.length){var fb=variantKey==="small"?"thumbnail":"icon";'
492			. 'var o=document.createElement("option");o.value=fb;o.textContent=fb+".ext";filename.appendChild(o);}'
493			. 'for(var i=0;i<filename.options.length;i++){if(filename.options[i].value===selected){filename.selectedIndex=i;return;}}'
494			. 'filename.selectedIndex=0;'
495			. '}'
496			. 'variant.addEventListener("change",updateChoices);'
497			. 'updateChoices();'
498			. '})();</script>';
499	}
500
501    public function _displaypageicon(Doku_Event &$event, $param) {
502        global $ACT, $ID;
503
504		if($ACT !== 'show') return;
505		if(!(bool)$this->getConf('show_on_top')) return;
506
507		$pageID = noNS($ID);
508		if($pageID === 'sidebar' || $pageID === 'footer') return;
509
510		$namespace = getNS($ID);
511		$pageID = noNS((string)$ID);
512		/** @var helper_plugin_pagesicon|null $helper */
513		$helper = plugin_load('helper', 'pagesicon');
514		if(!$helper) return;
515		$sizeMode = $this->getIconSize() > 35 ? 'bigorsmall' : 'smallorbig';
516		$logoMediaID = $helper->getPageImage($namespace, $pageID, $sizeMode);
517		if(!$logoMediaID) return;
518		if($this->hasIconAlready($event->data, $logoMediaID)) return;
519
520		$size = $this->getIconSize();
521		$src = (string)ml($logoMediaID, ['w' => $size]);
522		$src = $this->addVersionToUrl($src, $this->getMediaVersionStamp($logoMediaID), true);
523		if(!$src) return;
524		$iconHtml = '<img src="' . $src . '" class="media pagesicon-image" loading="lazy" alt="" width="' . $size . '" />';
525		if ((bool)$this->getConf('show_as_favicon')) {
526			$favicon = html_entity_decode((string)ml($logoMediaID, ['w' => 32]), ENT_QUOTES | ENT_HTML5, 'UTF-8');
527			$favicon = $this->addVersionToUrl($favicon, $this->getMediaVersionStamp($logoMediaID), false);
528			$this->injectFaviconRuntimeScript($event->data, $favicon);
529		}
530
531		$inlineIcon = '<span class="pagesicon-injected pagesicon-injected-inline">' . $iconHtml . '</span> ';
532		$updated = preg_replace('/<h1\b([^>]*)>/i', '<h1$1>' . $inlineIcon, $event->data, 1, $count);
533		if ($count > 0 && $updated !== null) {
534			$event->data = $updated;
535			return;
536		}
537
538		// Fallback: no H1 found, keep old behavior
539		$event->data = '<div class="pagesicon-injected">' . $iconHtml . '</div>' . "\n" . $event->data;
540	}
541
542	public function handleAction(Doku_Event $event): void
543	{
544		if ($event->data !== 'pagesicon') return;
545		$event->preventDefault();
546	}
547
548	public function renderAction(Doku_Event $event): void
549	{
550		global $ACT;
551		if ($ACT !== 'pagesicon') return;
552
553		$this->handleDeletePost();
554		$this->handleUploadPost();
555		$this->renderUploadForm();
556
557		$event->preventDefault();
558		$event->stopPropagation();
559	}
560}
561