MDL-31121 File resource: add options to display file type and size

fdelapuz · Jan 19, 2012 · a2c5766 · a2c5766
1 parent f6b4ec2
commit a2c5766
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Showing 6 changed files with 152 additions and 17 deletions.
diff --git a/mod/resource/lang/en/resource.php b/mod/resource/lang/en/resource.php
@@ -82,6 +82,19 @@
 $string['printintro'] = 'Display resource description';
 $string['printintroexplain'] = 'Display resource description bellow content? Some display types may not display description even if enabled.';
 $string['resourcecontent'] = 'Files and subfolders';
+$string['resourcedetails_sizetype'] = '{$a->size} {$a->type}';
 $string['resource:exportresource'] = 'Export resource';
 $string['resource:view'] = 'View resource';
 $string['selectmainfile'] = 'Please select the main file by clicking the icon next to file name.';
+$string['showsize'] = 'Show size';
+$string['showsize_help'] = 'Displays the file size, such as \'3.1 MB\', beside links to the file.
+
+If there are multiple files in this resource, the total size of all files is displayed.';
+$string['showsize_desc'] = 'Display file size on course page?';
+$string['showtype'] = 'Show type';
+$string['showtype_desc'] = 'Display file type (e.g. \'Word document\') on course page?';
+$string['showtype_help'] = 'Displays the type of the file, such as \'Word document\', beside links to the file.
+
+If there are multiple files in this resource, the start file type is displayed.
+
+If the file type is not known to the system, it will not display.';
diff --git a/mod/resource/lib.php b/mod/resource/lib.php
@@ -90,16 +90,8 @@ function resource_add_instance($data, $mform) {
     require_once("$CFG->libdir/resourcelib.php");
     $cmid = $data->coursemodule;
     $data->timemodified = time();
-    $displayoptions = array();
-    if ($data->display == RESOURCELIB_DISPLAY_POPUP) {
-        $displayoptions['popupwidth']  = $data->popupwidth;
-        $displayoptions['popupheight'] = $data->popupheight;
-    }
-    if (in_array($data->display, array(RESOURCELIB_DISPLAY_AUTO, RESOURCELIB_DISPLAY_EMBED, RESOURCELIB_DISPLAY_FRAME))) {
-        $displayoptions['printheading'] = (int)!empty($data->printheading);
-        $displayoptions['printintro']   = (int)!empty($data->printintro);
-    }
-    $data->displayoptions = serialize($displayoptions);
+
+    resource_set_display_options($data);
 
     $data->id = $DB->insert_record('resource', $data);
 
@@ -122,6 +114,21 @@ function resource_update_instance($data, $mform) {
     $data->id           = $data->instance;
     $data->revision++;
 
+    resource_set_display_options($data);
+
+    $DB->update_record('resource', $data);
+    resource_set_mainfile($data);
+    return true;
+}
+
+/**
+ * Updates display options based on form input.
+ *
+ * Shared code used by resource_add_instance and resource_update_instance.
+ *
+ * @param object $data Data object
+ */
+function resource_set_display_options($data) {
     $displayoptions = array();
     if ($data->display == RESOURCELIB_DISPLAY_POPUP) {
         $displayoptions['popupwidth']  = $data->popupwidth;
@@ -131,11 +138,13 @@ function resource_update_instance($data, $mform) {
         $displayoptions['printheading'] = (int)!empty($data->printheading);
         $displayoptions['printintro']   = (int)!empty($data->printintro);
     }
+    if (!empty($data->showsize)) {
+        $displayoptions['showsize'] = 1;
+    }
+    if (!empty($data->showtype)) {
+        $displayoptions['showtype'] = 1;
+    }
     $data->displayoptions = serialize($displayoptions);
-
-    $DB->update_record('resource', $data);
-    resource_set_mainfile($data);
-    return true;
 }
 
 /**
@@ -302,9 +311,25 @@ function resource_get_coursemodule_info($coursemodule) {
         $info->onclick = "window.open('$fullurl'); return false;";
     }
 
+    // If any optional extra details are turned on, store in custom data
+    $info->customdata = resource_get_optional_details($resource, $coursemodule);
+
     return $info;
 }
 
+/**
+ * Called when viewing course page. Shows extra details after the link if
+ * enabled.
+ *
+ * @param cm_info $cm Course module information
+ */
+function resource_cm_info_view(cm_info $cm) {
+    $details = $cm->get_custom_data();
+    if ($details) {
+        $cm->set_after_link(' ' . html_writer::tag('span', $details,
+                array('class' => 'resourcelinkdetails')));
+    }
+}
 
 /**
  * Lists all browsable file areas

diff --git a/mod/resource/locallib.php b/mod/resource/locallib.php
@@ -291,6 +291,61 @@ function resource_print_heading($resource, $cm, $course, $ignoresettings=false)
     }
 }
 
+/**
+ * Gets optional details for a resource, depending on resource settings.
+ *
+ * Result may include the file size and type if those settings are chosen,
+ * or blank if none.
+ *
+ * @param object $resource Resource table row
+ * @param object $cm Course-module table row
+ * @return string Size and type or empty string if show options are not enabled
+ */
+function resource_get_optional_details($resource, $cm) {
+    global $DB;
+
+    $details = '';
+
+    $options = empty($resource->displayoptions) ? array() : unserialize($resource->displayoptions);
+    if (!empty($options['showsize']) || !empty($options['showtype'])) {
+        $context = context_module::instance($cm->id);
+        $size = '';
+        $type = '';
+        if (!empty($options['showsize'])) {
+            $size = display_size($DB->get_field_sql(
+                    'SELECT SUM(filesize) FROM {files} WHERE contextid=?', array($context->id)));
+        }
+        if (!empty($options['showtype'])) {
+            // For a typical file resource, the sortorder is 1 for the main file
+            // and 0 for all other files. This sort approach is used just in case
+            // there are situations where the file has a different sort order
+            $mimetype = $DB->get_field_sql(
+                    'SELECT mimetype FROM {files} WHERE contextid=? ORDER BY sortorder DESC',
+                    array($context->id), IGNORE_MULTIPLE);
+            // Only show type if it is not unknown
+            if ($mimetype && $mimetype !== 'document/unknown') {
+                $type = get_mimetype_description($mimetype);
+                // There are some known mimetypes which don't have descriptions
+                if ($type === get_string('document/unknown','mimetypes')) {
+                    $type = '';
+                }
+            }
+        }
+
+        if ($size && $type) {
+            // Depending on language it may be necessary to show both options in
+            // different order, so use a lang string
+            $details = get_string('resourcedetails_sizetype', 'resource',
+                    (object)array('size'=>$size, 'type'=>$type));
+        } else {
+            // Either size or type is set, but not both, so just append
+            $details = $size . $type;
+        }
+    }
+
+    return $details;
+}
+
 /**
  * Print resource introduction.
  * @param object $resource
@@ -303,10 +358,21 @@ function resource_print_intro($resource, $cm, $course, $ignoresettings=false) {
     global $OUTPUT;
 
     $options = empty($resource->displayoptions) ? array() : unserialize($resource->displayoptions);
-    if ($ignoresettings or !empty($options['printintro'])) {
-        if (trim(strip_tags($resource->intro))) {
+
+    $extraintro = resource_get_optional_details($resource, $cm);
+    if ($extraintro) {
+        // Put a paragaph tag around the details
+        $extraintro = html_writer::tag('p', $extraintro, array('class' => 'resourcedetails'));
+    }
+
+    if ($ignoresettings || !empty($options['printintro']) || $extraintro) {
+        $gotintro = trim(strip_tags($resource->intro));
+        if ($gotintro || $extraintro) {
             echo $OUTPUT->box_start('mod_introbox', 'resourceintro');
-            echo format_module_intro('resource', $resource, $cm->id);
+            if ($gotintro) {
+                echo format_module_intro('resource', $resource, $cm->id);
+            }
+            echo $extraintro;
             echo $OUTPUT->box_end();
         }
     }

diff --git a/mod/resource/mod_form.php b/mod/resource/mod_form.php
@@ -92,6 +92,15 @@ function definition() {
             $mform->addHelpButton('display', 'displayselect', 'resource');
         }
 
+        $mform->addElement('checkbox', 'showsize', get_string('showsize', 'resource'));
+        $mform->setDefault('showsize', $config->showsize);
+        $mform->setAdvanced('showsize', $config->showsize_adv);
+        $mform->addHelpButton('showsize', 'showsize', 'resource');
+        $mform->addElement('checkbox', 'showtype', get_string('showtype', 'resource'));
+        $mform->setDefault('showtype', $config->showtype);
+        $mform->setAdvanced('showtype', $config->showtype_adv);
+        $mform->addHelpButton('showtype', 'showtype', 'resource');
+
         if (array_key_exists(RESOURCELIB_DISPLAY_POPUP, $options)) {
             $mform->addElement('text', 'popupwidth', get_string('popupwidth', 'resource'), array('size'=>3));
             if (count($options) > 1) {
@@ -175,6 +184,18 @@ function data_preprocessing(&$default_values) {
             if (!empty($displayoptions['popupheight'])) {
                 $default_values['popupheight'] = $displayoptions['popupheight'];
             }
+            if (!empty($displayoptions['showsize'])) {
+                $default_values['showsize'] = $displayoptions['showsize'];
+            } else {
+                // Must set explicitly to 0 here otherwise it will use system
+                // default which may be 1.
+                $default_values['showsize'] = 0;
+            }
+            if (!empty($displayoptions['showtype'])) {
+                $default_values['showtype'] = $displayoptions['showtype'];
+            } else {
+                $default_values['showtype'] = 0;
+            }
         }
     }
 

diff --git a/mod/resource/settings.php b/mod/resource/settings.php
@@ -65,6 +65,12 @@
     $settings->add(new admin_setting_configselect_with_advanced('resource/display',
         get_string('displayselect', 'resource'), get_string('displayselectexplain', 'resource'),
         array('value'=>RESOURCELIB_DISPLAY_AUTO, 'adv'=>false), $displayoptions));
+    $settings->add(new admin_setting_configcheckbox_with_advanced('resource/showsize',
+            get_string('showsize', 'resource'), get_string('showsize_desc', 'resource'),
+            array('value'=>0, 'adv'=>false)));
+    $settings->add(new admin_setting_configcheckbox_with_advanced('resource/showtype',
+            get_string('showtype', 'resource'), get_string('showtype_desc', 'resource'),
+            array('value'=>0, 'adv'=>false)));
     $settings->add(new admin_setting_configtext_with_advanced('resource/popupwidth',
         get_string('popupwidth', 'resource'), get_string('popupwidthexplain', 'resource'),
         array('value'=>620, 'adv'=>true), PARAM_INT, 7));

diff --git a/mod/resource/styles.css b/mod/resource/styles.css
@@ -1 +1,5 @@
 .path-mod-resource .resourcecontent {text-align: center;}
+
+.path-mod-resource .resourcedetails {font-size: 0.8em; color: #555;}
+
+.resourcelinkdetails {font-size: 0.8em; color: #555;}