Implemented ace-edtior as an app. Basic file editing and saving supported.

.htaccess

-ErrorDocument 404 //owncloud/core/templates/404.php
+ErrorDocument 404 /core/templates/404.php
 <IfModule mod_php5.c>
-	php_value upload_max_filesize 512M
-	php_value post_max_size 512M
-	SetEnv htaccessWorking true
+php_value upload_max_filesize 512M
+php_value post_max_size 512M
+SetEnv htaccessWorking true
 </IfModule>
 Options -Indexes

files/js/fileactions.js

@@ -135,6 +135,9 @@ FileActions.register('all','Delete',function(){return OC.imagePath('core','actio
 FileActions.register('all','Rename',function(){return OC.imagePath('core','actions/rename')},function(filename){
 	FileList.rename(filename);
 });
+FileActions.register('text','Edit',function(){return OC.imagePath('core','actions/rename')},function(filename){
+	window.location='/apps/editor/index.php?file='+filename+'&dir='+$('#dir').val();
+});
 
 //FileActions.setDefault('all','Download');
 
@@ -142,4 +145,4 @@ FileActions.register('dir','Open','',function(filename){
 	window.location='index.php?dir='+$('#dir').val()+'/'+filename;
 });
 
-FileActions.setDefault('dir','Open');
+FileActions.setDefault('dir','Open');  

lib/filesystem.php

@@ -441,6 +441,10 @@ class OC_Filesystem{
 		return $files;
 		
 	}
+	
+	static public function update_session_file_hash($sessionname,$sessionvalue){
+		$_SESSION[$sessionname] = $sessionvalue;
+	}
 
 	/**
 	 * abstraction for running most basic operations