* finish task#481.

module/extension/control.php

@@ -204,6 +204,8 @@ class extension extends control
             die($this->display());
         }
 
+        if($preInstallHook = $this->extension->getHookFile($extension, 'preinstall')) include $preInstallHook;
+
         /* Save to database. */
         $this->extension->saveExtension($extension, $type);
 
@@ -224,15 +226,12 @@ class extension extends control
                 $this->view->error = sprintf($this->lang->extension->errorInstallDB, $return->error);
                 die($this->display());
             }
-            $this->extension->updateExtension($extension, $data);
         }
-        else
-        {
-            $this->extension->updateExtension($extension, $data);
-        }
-
+        $this->extension->updateExtension($extension, $data);
         $this->view->downloadedPackage = !empty($downLink);
 
+        if($postInstallHook = $this->extension->getHookFile($extension, 'postinstall')) include $postInstallHook;
+
         $this->display();
     }
 
@@ -245,10 +244,14 @@ class extension extends control
      */
     public function uninstall($extension)
     {
+        if($preUninstallHook = $this->extension->getHookFile($extension, 'preuninstall')) include $preUninstallHook;
+
         $this->extension->executeDB($extension, 'uninstall');
         $this->extension->updateExtension($extension, array('status' => 'available'));
         $this->view->removeCommands = $this->extension->removePackage($extension);
         $this->view->header->title  = $this->lang->extension->uninstallFinished;
+
+        if($postUninstallHook = $this->extension->getHookFile($extension, 'postuninstall')) include $postUninstallHook;
         $this->display();
     }
 

module/extension/model.php

@@ -315,6 +315,21 @@ class extensionModel extends model
         return $license;
     }
 
+    /**
+     * Get hook file for install or uninstall.
+     * 
+     * @param  string    $extension 
+     * @param  string    $hook      preinstall|postinstall|preuninstall|postuninstall 
+     * @access public
+     * @return string|bool
+     */
+    public function getHookFile($extension, $hook)
+    {
+        $hookFile = "ext/$extension/hook/$hook.php";
+        if(file_exists($hookFile)) return $hookFile;
+        return false;
+    }
+
     /**
      * Get the install db file.
      * 
@@ -382,7 +397,7 @@ class extensionModel extends model
         $pathes  = $this->getPathesFromPackage($extension);
         foreach($pathes as $path)
         {
-            if($path == 'db' or $path == 'doc') continue;
+            if($path == 'db' or $path == 'doc' or $path == 'hook') continue;
             $path = $appRoot . $path;
             if(is_dir($path))
             {
@@ -492,7 +507,7 @@ class extensionModel extends model
 
         foreach($pathes as $path)
         {
-            if($path == 'db' or $path == 'doc' or $path == '..' or $path == '.') continue;
+            if($path == 'db' or $path == 'doc' or $path == 'hook' or $path == '..' or $path == '.') continue;
             $copiedFiles = $this->classFile->copyDir($extensionDir . $path, $appRoot . $path);
         }
         foreach($copiedFiles as $key => $copiedFile)