- plugins can add now their page to the admin page

- new plugin (event_tracer) that demonstrate it and useful to see all calls 
to trigger_event

git-svn-id: http://piwigo.org/svn/trunk@1580 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 90 insertions, 0 deletions

diff --git a/plugins/event_tracer/index.php b/plugins/event_tracer/index.php
new file mode 100644
index 000000000..cc9130b67
--- /dev/null
+++ b/plugins/event_tracer/index.php
@@ -0,0 +1,90 @@
+<?php
+/*
+Plugin Name: Event tracer
+Version: 1.0
+Description: For developers. Shows all calls to trigger_event.
+Plugin URI: http://www.phpwebgallery.net
+*/
+if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');
+
+class EventTracer
+{
+  var $me_working;
+  var $my_config;
+
+  function EventTracer()
+  {
+    $this->me_working=0;
+  }
+
+  function load_config()
+  {
+    $x = @file_get_contents( dirname(__FILE__).'/tracer.dat' );
+    if ($x!==false)
+    {
+      $c = unserialize($x);
+      // do some more tests here
+      $this->my_config = $c;
+    }
+    if ( !isset($this->my_config)
+        or empty($this->my_config['filters']) )
+    {
+      $this->my_config['filters'] = array( '.*' );
+      $this->my_config['show_args'] = false;
+      $this->save_config();
+    }
+  }
+
+  function save_config()
+  {
+    $file = fopen( dirname(__FILE__).'/tracer.dat', 'w' );
+    fwrite($file, serialize($this->my_config) );
+    fclose( $file );
+  }
+
+  function pre_trigger_event($event_info)
+  {
+    if (!$this->me_working)
+    {
+      foreach( $this->my_config['filters'] as $filter)
+      {
+        if ( preg_match( '/'.$filter.'/', $event_info['event'] ) )
+        {
+          if ($this->my_config['show_args'])
+            $s = var_export( $event_info['data'], true );
+          else
+            $s = '';
+          pwg_debug('begin trigger_event "'.$event_info['event'].'" '.htmlspecialchars($s) );
+          break;
+        }
+      }
+    }
+  }
+
+  /*function post_trigger_event($filter_info)
+  {
+    if (!$this->me_working)
+    {
+      $s = var_export( $filter_info['data'], true );
+      pwg_debug('end trigger_event '.$filter_info['event'].' '.$s );
+    }
+  }*/
+
+  function plugin_admin_menu()
+  {
+    add_plugin_admin_menu( "Event Tracer", array(&$this, 'do_admin') );
+  }
+
+  function do_admin($my_url)
+  {
+    include( dirname(__FILE__).'/tracer_admin.php' );
+  }
+
+}
+
+$eventTracer = new EventTracer();
+$eventTracer->load_config();
+
+add_event_handler('plugin_admin_menu', array(&$eventTracer, 'plugin_admin_menu') );
+add_event_handler('pre_trigger_event', array(&$eventTracer, 'pre_trigger_event') );
+?>
\ No newline at end of file