Added ticket 45, base implementation of a timeline.

Still some cleaning of the code to have a nicer display of the timeline
especially for the issue updates.

src/IDF/Template/IssueComment.php

@@ -32,7 +32,7 @@ class IDF_Template_IssueComment extends Pluf_Template_Tag
     private $request = null;
     private $scm = null;
 
-    function start($text, $request)
+    function start($text, $request, $echo=true)
     {
         $this->project = $request->project;
         $this->request = $request;
@@ -50,7 +50,11 @@ class IDF_Template_IssueComment extends Pluf_Template_Tag
             $text = preg_replace_callback('#(commit\s+)([0-9a-f]{1,40})#im',
                                           array($this, 'callbackCommit'), $text);
         }
-        echo $text;
+        if ($echo) {
+            echo $text;
+        } else {
+            return $text;
+        }
     }
 
     /**

src/IDF/Template/TimelineFragment.php

@@ -0,0 +1,34 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Make the links to issues and commits.
+ */
+class IDF_Template_TimelineFragment extends Pluf_Template_Tag
+{
+    function start($item, $request)
+    {
+        $m = Pluf::factory($item->model_class, $item->model_id);
+        echo $m->timelineFragment($request);
+    }
+}