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+<?php
+
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * Use TinyMCE library to allow rich text editing in the browser
+ *
+ * PHP version 5
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category WYSIWYG
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link http://status.net/
+ */
+if (!defined('STATUSNET')) {
+ // This check helps protect against security problems;
+ // your code file can't be executed directly from the web.
+ exit(1);
+}
+
+/**
+ * Use TinyMCE library to allow rich text editing in the browser
+ *
+ * Converts the notice form in browser to a rich-text editor.
+ *
+ * @category WYSIWYG
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link http://status.net/
+ */
+class TinyMCEPlugin extends Plugin
+{
+
+ var $html;
+
+ function onEndShowScripts($action)
+ {
+ if (common_logged_in ()) {
+ $action->script(common_path('plugins/TinyMCE/js/jquery.tinymce.js'));
+ $action->inlineScript($this->_inlineScript());
+ }
+
+ return true;
+ }
+
+ function onEndShowStyles($action)
+ {
+ $action->style('span#notice_data-text_container, span#notice_data-text_parent { float: left }');
+ return true;
+ }
+
+ function onPluginVersion(&$versions)
+ {
+ $versions[] = array('name' => 'TinyMCE',
+ 'version' => STATUSNET_VERSION,
+ 'author' => 'Evan Prodromou',
+ 'homepage' => 'http://status.net/wiki/Plugin:TinyMCE',
+ 'rawdescription' =>
+ _m('Use TinyMCE library to allow rich text editing in the browser'));
+ return true;
+ }
+
+ /**
+ * Sanitize HTML input and strip out potentially dangerous bits.
+ *
+ * @param string $raw HTML
+ * @return string HTML
+ */
+ private function sanitizeHtml($raw)
+ {
+ require_once INSTALLDIR . '/extlib/htmLawed/htmLawed.php';
+
+ $config = array('safe' => 1,
+ 'deny_attribute' => 'id,style,on*');
+
+ return htmLawed($raw, $config);
+ }
+
+ /**
+ * Strip HTML to plaintext string
+ *
+ * @param string $html HTML
+ * @return string plaintext, single line
+ */
+ private function stripHtml($html)
+ {
+ return str_replace("\n", " ", html_entity_decode(strip_tags($html), ENT_QUOTES, 'UTF-8'));
+ }
+
+ /**
+ * Hook for new-notice form processing to take our HTML goodies;
+ * won't affect API posting etc.
+ *
+ * @param NewNoticeAction $action
+ * @param User $user
+ * @param string $content
+ * @param array $options
+ * @return boolean hook return
+ */
+ function onStartSaveNewNoticeWeb($action, $user, &$content, &$options)
+ {
+ if ($action->arg('richedit')) {
+ $html = $this->sanitizeHtml($content);
+ $options['rendered'] = $html;
+ $content = $this->stripHtml($html);
+ }
+ return true;
+ }
+
+ /**
+ * Hook for new-notice form processing to process file upload appending...
+ *
+ * @param NewNoticeAction $action
+ * @param MediaFile $media
+ * @param string $content
+ * @param array $options
+ * @return boolean hook return
+ */
+ function onStartSaveNewNoticeAppendAttachment($action, $media, &$content, &$options)
+ {
+ if ($action->arg('richedit')) {
+ // See if we've got a placeholder inline image; if so, fill it!
+ $dom = new DOMDocument();
+
+ if ($dom->loadHTML($options['rendered'])) {
+ $imgs = $dom->getElementsByTagName('img');
+ foreach ($imgs as $img) {
+ if (preg_match('/(^| )placeholder( |$)/', $img->getAttribute('class'))) {
+ // Create a link to the attachment page...
+ $this->formatAttachment($img, $media);
+ }
+ }
+ $options['rendered'] = $this->saveHtml($dom);
+ }
+
+ // The regular code will append the short URL to the plaintext content.
+ // Carry on and let it through...
+ }
+ return true;
+ }
+
+ /**
+ * Format the attachment placeholder img with the final version.
+ *
+ * @param DOMElement $img
+ * @param MediaFile $media
+ */
+ private function formatAttachment($img, $media)
+ {
+ $parent = $img->parentNode;
+ $dom = $img->ownerDocument;
+
+ $link = $dom->createElement('a');
+ $link->setAttribute('href', $media->fileurl);
+ $link->setAttribute('title', File::url($media->filename));
+
+ if ($this->isEmbeddable($media)) {
+ // Fix the the <img> attributes and wrap the link around it...
+ $this->insertImage($img, $media);
+ $parent->replaceChild($link, $img); //it dies in here?!
+ $link->appendChild($img);
+ } else {
+ // Not an image? Replace it with a text link.
+ $link->setAttribute('rel', 'external');
+ $link->setAttribute('class', 'attachment');
+ $link->setAttribute('id', 'attachment-' . $media->fileRecord->id);
+ $text = $dom->createTextNode($media->shortUrl());
+ $link->appendChild($text);
+ $parent->replaceChild($link, $img);
+ }
+ }
+
+ /**
+ * Is this media file a type we can display inline?
+ *
+ * @param MediaFile $media
+ * @return boolean
+ */
+ private function isEmbeddable($media)
+ {
+ $showable = array('image/png',
+ 'image/gif',
+ 'image/jpeg');
+ return in_array($media->mimetype, $showable);
+ }
+
+ /**
+ * Rewrite and resize a placeholder image element to match the uploaded
+ * file. If the holder is smaller than the file, the file is scaled to fit
+ * with correct aspect ratio (but will be loaded at full resolution).
+ *
+ * @param DOMElement $img
+ * @param MediaFile $media
+ */
+ private function insertImage($img, $media)
+ {
+ $img->setAttribute('src', $media->fileRecord->url);
+
+ $holderWidth = intval($img->getAttribute('width'));
+ $holderHeight = intval($img->getAttribute('height'));
+
+ $path = File::path($media->filename);
+ $imgInfo = getimagesize($path);
+
+ if ($imgInfo) {
+ $origWidth = $imgInfo[0];
+ $origHeight = $imgInfo[1];
+
+ list($width, $height) = $this->sizeBox(
+ $origWidth, $origHeight,
+ $holderWidth, $holderHeight);
+
+ $img->setAttribute('width', $width);
+ $img->setAttribute('height', $height);
+ }
+ }
+
+ /**
+ *
+ * @param int $origWidth
+ * @param int $origHeight
+ * @param int $holderWidth
+ * @param int $holderHeight
+ * @return array($width, $height)
+ */
+ private function sizeBox($origWidth, $origHeight, $holderWidth, $holderHeight)
+ {
+ $holderAspect = $holderWidth / $holderHeight;
+ $origAspect = $origWidth / $origHeight;
+ if ($origAspect >= 1.0) {
+ // wide image
+ if ($origWidth > $holderWidth) {
+ return array($holderWidth, intval($holderWidth / $origAspect));
+ } else {
+ return array($origWidth, $origHeight);
+ }
+ } else {
+ if ($origHeight > $holderHeight) {
+ return array(intval($holderWidth * $origAspect), $holderHeight);
+ } else {
+ return array($origWidth, $origHeight);
+ }
+ }
+ }
+
+ private function saveHtml($dom)
+ {
+ $html = $dom->saveHTML();
+ // hack to remove surrounding crap added to the dom
+ // all we wanted was a fragment
+ $stripped = preg_replace('/^.*<body[^>]*>(.*)<\/body.*$/is', '$1', $html);
+ return $stripped;
+ }
+
+ function _inlineScript()
+ {
+ $path = common_path('plugins/TinyMCE/js/tiny_mce.js');
+ $placeholder = common_path('plugins/TinyMCE/icons/placeholder.png');
+
+ // Note: the normal on-submit triggering to save data from
+ // the HTML editor into the textarea doesn't play well with
+ // our AJAX form submission. Manually moving it to trigger
+ // on our send button click.
+ $scr = <<<END_OF_SCRIPT
+ $().ready(function() {
+ var noticeForm = $('#form_notice');
+ $('textarea#notice_data-text').tinymce({
+ script_url : '{$path}',
+ // General options
+ theme : "advanced",
+ plugins : "paste,fullscreen,autoresize,inlinepopups,tabfocus,linkautodetect",
+ theme_advanced_buttons1 : "bold,italic,strikethrough,|,undo,redo,|,link,unlink,image,|,fullscreen",
+ theme_advanced_buttons2 : "",
+ theme_advanced_buttons3 : "",
+ add_form_submit_trigger : false,
+ theme_advanced_resizing : true,
+ tabfocus_elements: ":prev,:next",
+ setup: function(ed) {
+ noticeForm.append('<input type="hidden" name="richedit" value="1">');
+
+ $('#notice_action-submit').click(function() {
+ tinymce.triggerSave();
+ });
+
+ var origCounter = SN.U.CharacterCount;
+ SN.U.CharacterCount = function(form) {
+ var text = $(ed.getDoc()).text();
+ return text.length;
+ };
+ ed.onKeyUp.add(function (ed, e) {
+ SN.U.Counter(noticeForm);
+ });
+
+ $('#'+SN.C.S.NoticeDataAttach).change(function() {
+ var img = '<img src="{$placeholder}" class="placeholder" width="320" height="240">';
+ var html = tinyMCE.activeEditor.getContent();
+ ed.setContent(html + img);
+ });
+ }
+ });
+ });
+END_OF_SCRIPT;
+
+ return $scr;
+ }
+
+}
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