Add user feedback near mouse cursor when voting to a song (democratic playlist)

lib/class/democratic.class.php

@@ -405,6 +405,10 @@ class Democratic extends Tmp_Playlist
      */
     private function _add_vote($object_id, $object_type = 'song')
     {
+        if (!$this->tmp_playlist) {
+            return false;
+        }
+
         $media = new $object_type($object_id);
         $track = isset($media->track) ? intval($media->track) : null;
 
@@ -588,11 +592,13 @@ class Democratic extends Tmp_Playlist
     {
         $tmp_id = Dba::escape($this->tmp_playlist);
 
+        if ($tmp_id) {
             /* Clear all votes then prune */
             $sql = "DELETE FROM `user_vote` USING `user_vote` " .
                 "LEFT JOIN `tmp_playlist_data` ON `user_vote`.`object_id` = `tmp_playlist_data`.`id` " .
                 "WHERE `tmp_playlist_data`.`tmp_playlist`='$tmp_id'";
             Dba::write($sql);
+        }
 
         // Prune!
         self::prune_tracks();

lib/class/stream_playlist.class.php

@@ -497,6 +497,7 @@ class Stream_Playlist
         }
 
         $democratic->add_vote($items);
+        mouse_message(T_('Vote added'));
     }
 
     /**

lib/javascript/base.js

@@ -19,6 +19,7 @@
 //
 $(document).ready(function () {
     initTabs();
+    $(document).mousemove(mouse_message_move);
 });
 
 function initTabs()
@@ -85,6 +86,25 @@ function toggleVisible(element) {
     }
 }
 
+var mouseTimeout = null;
+function mouseMessage(message, timeout) {
+    if (mouseTimeout != null) {
+        clearTimeout(mouseTimeout);
+        mouseTimeout = null;
+    }
+    $('#mouse_message').html(message);
+    $('#mouse_message').fadeIn();
+    mouseTimeout = setTimeout(function() {
+        $('#mouse_message').fadeOut();
+    }, timeout);
+}
+
+function mouse_message_move(e) {
+    $('#mouse_message').css({top: e.clientY + 10,
+        left: e.clientX + 10
+    });
+}
+
 // delayRun
 // This function delays the run of another function by X milliseconds
 function delayRun(element, time, method, page, source) {

lib/ui.lib.php

@@ -666,6 +666,13 @@ function toggle_visible($element)
 
 } // toggle_visible
 
+function mouse_message($message, $timeout = 1000)
+{
+    echo "<script type='text/javascript'>";
+    echo "mouseMessage('" . $message . "', " . $timeout . ");";
+    echo "</script>\n";
+}
+
 /**
  * print_bool
  * This function takes a boolean value and then prints out a friendly text

templates/header.inc.php

@@ -291,6 +291,7 @@ $_SESSION['login'] = false;
         <?php } ?>
         <!-- rfc3514 implementation -->
         <div id="rfc3514" style="display:none;">0x0</div>
+        <div id="mouse_message"></div>
         <div id="maincontainer">
             <div id="header" class="header-<?php echo AmpConfig::get('ui_fixed') ? 'fixed' : 'float'; ?>"><!-- This is the header -->
                 <h1 id="headerlogo">

themes/reborn/templates/default.css

@@ -185,7 +185,15 @@ input[type=button]:focus:active, input[type=submit]:focus:active {
     width: 120px;
     display: none;
     background-repeat: no-repeat;
-    background-position: center; 
+    background-position: right; 
+}
+
+#mouse_message {
+    z-index: 9999;
+    position: fixed;
+    color: #303335;
+    text-shadow: 2px 2px 9px #fff;
+    font-weight: bold;
 }
 
 /***********************************************