MDL-23787 added possibility to embed images into textarea fields in database activity

mod/data/field/textarea/field.class.php

@@ -28,6 +28,27 @@ class data_field_textarea extends data_field_base {
 
     var $type = 'textarea';
 
+    /**
+     * Returns options for embedded files
+     *
+     * @return array
+     */
+    private function get_options() {
+        if (!isset($this->field->param5)) {
+            $this->field->param5 = 0;
+        }
+        $options = array();
+        $options['trusttext'] = false;
+        $options['forcehttps'] = false;
+        $options['subdirs'] = false;
+        $options['maxfiles'] = -1;
+        $options['context'] = $this->context;
+        $options['maxbytes'] = $this->field->param5;
+        $options['changeformat'] = 0;
+        $options['noclean'] = false;
+        return $options;
+    }
+
     function display_add_field($recordid=0) {
         global $CFG, $DB, $OUTPUT, $PAGE;
 
@@ -37,27 +58,63 @@ class data_field_textarea extends data_field_base {
         $str = '<div title="'.$this->field->description.'">';
 
         editors_head_setup();
-
+        $options = $this->get_options();
-        $options = array();
-        $options['trusttext'] = false;
-        $options['forcehttps'] = false;
-        $options['subdirs'] = false;
-        $options['maxfiles'] = 0;
-        $options['maxbytes'] = 0;
-        $options['changeformat'] = 0;
-        $options['noclean'] = false;
 
         $itemid = $this->field->id;
         $field = 'field_'.$itemid;
 
         if ($recordid && $content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))){
-            $text   = $content->content;
             $format = $content->content1;
-            $text = clean_text($text, $format);
+            $text = clean_text($content->content, $format);
-        } else if (can_use_html_editor()) {
+            $text = file_prepare_draft_area($draftitemid, $this->context->id, 'mod_data', 'content', $content->id, $options, $text);
-            $format = FORMAT_HTML;
         } else {
-            $format = FORMAT_PLAIN;
+            $draftitemid = file_get_unused_draft_itemid();
+            if (can_use_html_editor()) {
+                $format = FORMAT_HTML;
+            } else {
+                $format = FORMAT_PLAIN;
+            }
+        }
+
+        // get filepicker info
+        //
+        $fpoptions = array();
+        if ($options['maxfiles'] != 0 ) {
+            $args = new stdClass();
+            // need these three to filter repositories list
+            $args->accepted_types = array('image');
+            $args->return_types = (FILE_INTERNAL | FILE_EXTERNAL);
+            $args->context = $this->context;
+            $args->env = 'filepicker';
+            // advimage plugin
+            $image_options = initialise_filepicker($args);
+            $image_options->context = $this->context;
+            $image_options->client_id = uniqid();
+            $image_options->maxbytes = $options['maxbytes'];
+            $image_options->env = 'editor';
+            $image_options->itemid = $draftitemid;
+
+            // moodlemedia plugin
+            $args->accepted_types = array('video', 'audio');
+            $media_options = initialise_filepicker($args);
+            $media_options->context = $this->context;
+            $media_options->client_id = uniqid();
+            $media_options->maxbytes  = $options['maxbytes'];
+            $media_options->env = 'editor';
+            $media_options->itemid = $draftitemid;
+
+            // advlink plugin
+            $args->accepted_types = '*';
+            $link_options = initialise_filepicker($args);
+            $link_options->context = $this->context;
+            $link_options->client_id = uniqid();
+            $link_options->maxbytes  = $options['maxbytes'];
+            $link_options->env = 'editor';
+            $link_options->itemid = $draftitemid;
+
+            $fpoptions['image'] = $image_options;
+            $fpoptions['media'] = $media_options;
+            $fpoptions['link'] = $link_options;
         }
 
         $editor = editors_get_preferred_editor($format);
@@ -66,7 +123,8 @@ class data_field_textarea extends data_field_base {
         foreach ($formats as $fid) {
             $formats[$fid] = $strformats[$fid];
         }
-        $editor->use_editor($field, $options);
+        $editor->use_editor($field, $options, $fpoptions);
+        $str .= '<input type="hidden" name="'.$field.'_itemid" value="'.$draftitemid.'" />';
         $str .= '<div><textarea id="'.$field.'" name="'.$field.'" rows="'.$this->field->param3.'" cols="'.$this->field->param2.'">'.s($text).'</textarea></div>';
         $str .= '<div><select name="'.$field.'_content1">';
         foreach ($formats as $key=>$desc) {
@@ -111,17 +169,68 @@ class data_field_textarea extends data_field_base {
 
         $names = explode('_', $name);
         if (!empty($names[2])) {
-            $content->$names[2] = clean_param($value, PARAM_NOTAGS);  // content[1-4]
+            if ($names[2] == 'itemid') {
+                // the value will be retrieved by file_get_submitted_draft_itemid, do not need to save in DB
+                return true;
+            } else {
+                $content->$names[2] = clean_param($value, PARAM_NOTAGS);  // content[1-4]
+            }
         } else {
             $content->content = clean_param($value, PARAM_CLEAN);
         }
 
         if ($oldcontent = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
             $content->id = $oldcontent->id;
-            return $DB->update_record('data_content', $content);
         } else {
-            return $DB->insert_record('data_content', $content);
+            $content->id = $DB->insert_record('data_content', $content);
+            if (!$content->id) {
+                return false;
+            }
         }
+        if (!empty($content->content)) {
+            $draftitemid = file_get_submitted_draft_itemid('field_'. $this->field->id. '_itemid');
+            $options = $this->get_options();
+            $content->content = file_save_draft_area_files($draftitemid, $this->context->id, 'mod_data', 'content', $content->id, $options, $content->content);
+        }
+        $rv = $DB->update_record('data_content', $content);
+        return $rv;
+    }
+
+    /**
+     * Display the content of the field in browse mode
+     *
+     * @param int $recordid
+     * @param object $template
+     * @return bool|string
+     */
+    function display_browse_field($recordid, $template) {
+        global $DB;
+
+        if ($content = $DB->get_record('data_content', array('fieldid' => $this->field->id, 'recordid' => $recordid))) {
+            if (isset($content->content)) {
+                $options = new stdClass();
+                if ($this->field->param1 == '1') {  // We are autolinking this field, so disable linking within us
+                    $options->filter = false;
+                }
+                $options->para = false;
+                $str = file_rewrite_pluginfile_urls($content->content, 'pluginfile.php', $this->context->id, 'mod_data', 'content', $content->id, $this->get_options());
+                $str = format_text($str, $content->content1, $options);
+            } else {
+                $str = '';
+            }
+            return $str;
+        }
+        return false;
+    }
+
+    /**
+     * Whether this module support files
+     *
+     * @param string $relativepath
+     * @return bool
+     */
+    function file_ok($relativepath) {
+        return true;
     }
 }
 

mod/data/field/textarea/lang/en/datafield_textarea.php

@@ -24,4 +24,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+$string['maxbytes'] = 'Maximum embedded file size (bytes)';
+$string['maxbytes_desc'] = 'If set to zero will be unlimited by default';
 $string['pluginname'] = 'Text area';

mod/data/field/textarea/mod.html

@@ -38,5 +38,13 @@
             ?> /> <?php echo get_string('rows', 'data'); ?>
         </td>
     </tr>
+    <tr>
+        <td class="c0"><label for="param5"><?php echo get_string('maxbytes', 'datafield_textarea'); ?></label></td>
+        <td class="c1">
+            <input class="c1" type="text" name="param5" id="param5"
+                   value="<?php if (isset($this->field->param5)) { p($this->field->param5); } else { echo '0'; } ?>" />
+            <?php echo get_string('maxbytes_desc', 'datafield_textarea'); ?>
+        </td>
+    </tr>
 </table>
 <input type="hidden" name="param4" id="param4" value="<?php echo FORMAT_HTML; ?>" />