[ticket/13740] Add navigation bar support for the installer

Also added various UI elements and texts.
[ci skip]

PHPBB3-13740

phpBB/adm/style/install_header.html

@@ -43,7 +43,7 @@
 							<li<!-- IF l_block1.S_SELECTED --> id="activemenu"<!-- ENDIF -->><a href="{l_block1.U_TITLE}"><span>{l_block1.L_TITLE}</span></a></li>
 						<!-- END l_block1 -->
 						<!-- BEGIN l_block2 -->
-							<li<!-- IF l_block2.S_SELECTED --> id="activemenu"<!-- ENDIF -->><span<!-- IF l_block2.S_COMPLETE --> class="completed"<!-- ENDIF -->>{l_block2.L_TITLE}</span></li>
+							<li<!-- IF l_block2.S_SELECTED --> id="activemenu"<!-- ENDIF -->><span<!-- IF l_block2.S_COMPLETE --> class="completed"<!-- ENDIF --> id="installer-stage-{l_block2.STAGE_NAME}">{l_block2.L_TITLE}</span></li>
 						<!-- END l_block2 -->
 						</ul>
 						</div>

phpBB/adm/style/installer_form.html

@@ -1,6 +1,8 @@
 <form id="<!-- IF FORM_ID -->{FORM_ID}<!-- ELSE -->install_install<!-- ENDIF -->" method="POST" action="{U_ACTION}">
 <!-- IF .options -->
+<!-- IF S_FORM_ELEM_COUNT > 1 -->
 <fieldset>
+<!-- ENDIF -->
 
     <!-- BEGIN options -->
         <!-- IF options.S_LEGEND -->
@@ -40,7 +42,9 @@
             </dd>
         </dl>
             <!-- ELSE -->
+<!-- IF S_FORM_ELEM_COUNT > 1 -->
 </fieldset>
+<!-- ENDIF -->
                 <fieldset class="submit-buttons">
                     <legend>{L_SUBMIT}</legend>
                     <input class="button1" type="submit" name="{options.KEY}" value="{options.TITLE}" />

phpBB/adm/style/installer_install.html

@@ -1,11 +1,11 @@
 <!-- INCLUDE install_header.html -->
-<h1>{L_INSTALL}</h1>
+<h1>{TITLE}</h1>
-{CONTENT}
+<p>{CONTENT}</p>
 <!-- IF SHOW_INSTALL_START_FORM -->
 <form id="install_install" method="post" action="{U_ACTION}">
     <fieldset class="submit-buttons">
         <legend>{L_SUBMIT}</legend>
-        <input name="install" type="submit" value="{L_INSTALL}" />
+        <input class="button1" name="install" type="submit" value="{L_INSTALL}" />
     </fieldset>
 </form>
 <!-- ENDIF -->

phpBB/assets/javascript/installer.js

@@ -95,6 +95,45 @@
         interceptFormSubmit($form);
     }
 
+    /**
+     * Handles navigation status updates
+     *
+     * @param navObj
+     */
+    function updateNavbarStatus(navObj) {
+        var navID, $stage, $stageListItem, $active;
+        $active = $('#activemenu');
+
+        if (navObj.hasOwnProperty('finished')) {
+            // This should be an Array
+            var navItems = navObj.finished;
+
+            for (var i = 0; i < navItems.length; i++) {
+                navID = 'installer-stage-' + navItems[i];
+                $stage = $('#' + navID);
+                $stageListItem = $stage.parent();
+
+                if ($active.length && $active.is($stageListItem)) {
+                    $active.removeAttr('id');
+                }
+
+                $stage.addClass('completed');
+            }
+        }
+
+        if (navObj.hasOwnProperty('active')) {
+            navID = 'installer-stage-' + navObj.active;
+            $stage = $('#' + navID);
+            $stageListItem = $stage.parent();
+
+            if ($active.length && !$active.is($stageListItem)) {
+                $active.removeAttr('id');
+            }
+
+            $stageListItem.attr('id', 'activemenu');
+        }
+    }
+
     /**
      * Renders progress bar
      *
@@ -166,6 +205,10 @@
         if (responseObject.hasOwnProperty('progress')) {
             setProgress(responseObject.progress);
         }
+
+        if (responseObject.hasOwnProperty('nav')) {
+            updateNavbarStatus(responseObject.nav);
+        }
     }
 
     /**
@@ -231,6 +274,14 @@
         }, 10);
     }
 
+    /**
+     * Resets the polling timer
+     */
+    function resetPolling() {
+        clearInterval(pollTimer);
+        nextReadPosition = 0;
+    }
+
     /**
      * Sets up timer for processing the streamed HTTP response
      *
@@ -240,15 +291,7 @@
         resetPolling();
         pollTimer = setInterval(function () {
             pollContent(xhReq);
-        }, 500);
+        }, 250);
-    }
-
-    /**
-     * Resets the polling timer
-     */
-    function resetPolling() {
-        clearInterval(pollTimer);
-        nextReadPosition = 0;
     }
 
     /**

phpBB/config/installer/container/services_install_controller.yml

@@ -23,7 +23,10 @@ services:
         class: phpbb\install\controller\install
         arguments:
             - @phpbb.installer.controller.helper
+            - @installer.helper.config
             - @installer.helper.iohandler_factory
+            - @installer.navigation.provider
+            - @language
             - @template
             - @request
             - @installer.installer.install

phpBB/config/installer/container/services_install_requirements.yml

@@ -13,6 +13,7 @@ services:
             - @installer.helper.database
             - @installer.helper.iohandler
 
+# Please note, that the name of this module is hard coded in the installer service
     installer.module.requirements_install:
         class: phpbb\install\module\requirements\module
         parent: installer.module_base

phpBB/install/controller/helper.php

@@ -157,7 +157,18 @@ class helper
 			{
 				// @todo Sort navs by order
 
-				foreach ($entry[0] as $sub_entry)
+				foreach ($entry[0] as $name => $sub_entry)
+				{
+					if (isset($sub_entry['stage']) && $sub_entry['stage'] === true)
+					{
+						$this->template->assign_block_vars('l_block2', array(
+							'L_TITLE'		=> $this->language->lang($sub_entry['label']),
+							'S_SELECTED'	=> (isset($sub_entry['selected']) && $sub_entry['selected'] === true),
+							'S_COMPLETE'	=> (isset($sub_entry['completed']) && $sub_entry['completed'] === true),
+							'STAGE_NAME'	=> $name,
+						));
+					}
+					else
 					{
 						$this->template->assign_block_vars('l_block1', array(
 							'L_TITLE'		=> $this->language->lang($sub_entry['label']),
@@ -168,6 +179,7 @@ class helper
 				}
 			}
 		}
+	}
 
 	/**
 	 * Returns path from route name

phpBB/install/controller/install.php

@@ -13,7 +13,16 @@
 
 namespace phpbb\install\controller;
 
+use phpbb\install\helper\config;
+use phpbb\install\helper\navigation\navigation_provider;
 use Symfony\Component\HttpFoundation\StreamedResponse;
+use Symfony\Component\HttpFoundation\Response;
+use phpbb\install\helper\iohandler\factory;
+use phpbb\install\controller\helper;
+use phpbb\template\template;
+use phpbb\request\request_interface;
+use phpbb\install\installer;
+use phpbb\language\language;
 
 /**
  * Controller for installing phpBB
@@ -21,27 +30,42 @@ use Symfony\Component\HttpFoundation\StreamedResponse;
 class install
 {
 	/**
-	 * @var \phpbb\install\controller\helper
+	 * @var helper
 	 */
 	protected $controller_helper;
 
 	/**
-	 * @var \phpbb\install\helper\iohandler\factory
+	 * @var config
+	 */
+	protected $installer_config;
+
+	/**
+	 * @var factory
 	 */
 	protected $iohandler_factory;
 
 	/**
-	 * @var \phpbb\template\template
+	 * @var navigation_provider
+	 */
+	protected $menu_provider;
+
+	/**
+	 * @var language
+	 */
+	protected $language;
+
+	/**
+	 * @var template
 	 */
 	protected $template;
 
 	/**
-	 * @var \phpbb\request\request_interface
+	 * @var request_interface
 	 */
 	protected $request;
 
 	/**
-	 * @var \phpbb\install\installer
+	 * @var installer
 	 */
 	protected $installer;
 
@@ -49,14 +73,20 @@ class install
 	 * Constructor
 	 *
 	 * @param helper 				$helper
-	 * @param \phpbb\install\helper\iohandler\factory $factory
+	 * @param config				$install_config
-	 * @param \phpbb\request\request_interface $request
+	 * @param factory 				$factory
-	 * @param \phpbb\install\installer $installer
+	 * @param navigation_provider	$nav_provider
+	 * @param language				$language
+	 * @param request_interface		$request
+	 * @param installer				$installer
 	 */
-	public function __construct(helper $helper, \phpbb\install\helper\iohandler\factory $factory, \phpbb\template\template $template, \phpbb\request\request_interface $request, \phpbb\install\installer $installer)
+	public function __construct(helper $helper, config $install_config, factory $factory, navigation_provider $nav_provider, language $language, template $template, request_interface $request, installer $installer)
 	{
 		$this->controller_helper	= $helper;
+		$this->installer_config		= $install_config;
 		$this->iohandler_factory	= $factory;
+		$this->menu_provider		= $nav_provider;
+		$this->language				= $language;
 		$this->template				= $template;
 		$this->request				= $request;
 		$this->installer			= $installer;
@@ -65,7 +95,7 @@ class install
 	/**
 	 * Controller logic
 	 *
-	 * @return \Symfony\Component\HttpFoundation\Response|StreamedResponse
+	 * @return Response|StreamedResponse
 	 */
 	public function handle()
 	{
@@ -86,13 +116,38 @@ class install
 		}
 
 		// Set the appropriate input-output handler
-		//$this->installer->set_iohandler($this->iohandler_factory->get());
+		$this->installer->set_iohandler($this->iohandler_factory->get());
+
+		// Set up navigation
+		$nav_data = $this->installer_config->get_navigation_data();
+		/** @var \phpbb\install\helper\iohandler\iohandler_interface $iohandler */
+		$iohandler = $this->iohandler_factory->get();
+
+		// Set active navigation stage
+		if (isset($nav_data['active']) && is_array($nav_data['active']))
+		{
+			$iohandler->set_active_stage_menu($nav_data['active']);
+			$this->menu_provider->set_nav_property($nav_data['active'], array(
+				'selected'	=> true,
+				'completed'	=> false,
+			));
+		}
+
+		// Set finished navigation stages
+		if (isset($nav_data['finished']) && is_array($nav_data['finished']))
+		{
+			foreach ($nav_data['finished'] as $finished_stage)
+			{
+				$iohandler->set_finished_stage_menu($finished_stage);
+				$this->menu_provider->set_nav_property($finished_stage, array(
+					'selected'	=> false,
+					'completed'	=> true,
+				));
+			}
+		}
 
 		if ($this->request->is_ajax())
 		{
-			// @todo: remove this line, and use the above
-			$this->installer->set_iohandler($this->iohandler_factory->get());
-
 			$installer = $this->installer;
 			$response = new StreamedResponse();
 			$response->setCallback(function() use ($installer) {
@@ -106,9 +161,20 @@ class install
 			// Determine whether the installation was started or not
 			if (true)
 			{
+				// Set active stage
+				$this->menu_provider->set_nav_property(
+					array('install', 0, 'introduction'),
+					array(
+						'selected'	=> true,
+						'completed'	=> false,
+					)
+				);
+
 				// If not, let's render the welcome page
 				$this->template->assign_vars(array(
 					'SHOW_INSTALL_START_FORM'	=> true,
+					'TITLE'						=> $this->language->lang('INSTALL_INTRO'),
+					'CONTENT'					=> $this->language->lang('INSTALL_INTRO_BODY'),
 				));
 				return $this->controller_helper->render('installer_install.html', 'INSTALL');
 			}

phpBB/install/controller/installer_index.php

@@ -13,7 +13,7 @@
 
 namespace phpbb\install\controller;
 
-class install_index
+class installer_index
 {
 	/**
 	 * @var helper

phpBB/install/exception/installer_config_not_writable_exception.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+namespace phpbb\install\exception;
+
+/**
+ * Exception for the event when installer config is not writable to disk
+ */
+class installer_config_not_writable_exception extends installer_exception
+{
+
+}

phpBB/install/exception/user_interaction_required_exception.php

@@ -15,6 +15,9 @@ namespace phpbb\install\exception;
 
 /**
  * This exception should be thrown when user interaction is inevitable
+ *
+ * Note: Please note that the output should already be setup for the user
+ * 		 when you use throw this exception
  */
 class user_interaction_required_exception extends installer_exception
 {

phpBB/install/helper/config.php

@@ -13,6 +13,8 @@
 
 namespace phpbb\install\helper;
 
+use phpbb\install\exception\installer_config_not_writable_exception;
+
 /**
  * Stores common settings and installation status
  */
@@ -64,6 +66,13 @@ class config
 	 */
 	protected $system_data;
 
+	/**
+	 * Array containing navigation bar information
+	 *
+	 * @var array
+	 */
+	protected $navigation_data;
+
 	/**
 	 * Constructor
 	 */
@@ -74,6 +83,7 @@ class config
 		$this->phpbb_root_path	= $phpbb_root_path;
 
 		// Set up data arrays
+		$this->navigation_data	= array();
 		$this->installer_config	= array();
 		$this->system_data		= array();
 		$this->progress_data	= array(
@@ -206,6 +216,7 @@ class config
 
 		$this->installer_config = $unserialized_data['installer_config'];
 		$this->progress_data = $unserialized_data['progress_data'];
+		$this->navigation_data = $unserialized_data['navigation_data'];
 	}
 
 	/**
@@ -217,6 +228,7 @@ class config
 		$save_array = array(
 			'installer_config'	=> $this->installer_config,
 			'progress_data'		=> $this->progress_data,
+			'navigation_data'	=> $this->navigation_data,
 		);
 
 		// Create file content
@@ -225,7 +237,12 @@ class config
 		$file_content .= "\n";
 
 		// Dump file_content to disk
-		$fp = fopen($this->install_config_file, 'w');
+		$fp = @fopen($this->install_config_file, 'w');
+		if (!$fp)
+		{
+			throw new installer_config_not_writable_exception();
+		}
+
 		fwrite($fp, $file_content);
 		fclose($fp);
 	}
@@ -285,6 +302,36 @@ class config
 		return $this->progress_data['max_task_progress'];
 	}
 
+	/**
+	 * Marks stage as completed in the navigation bar
+	 *
+	 * @param array	$nav_path	Array to the navigation elem
+	 */
+	public function set_finished_navigation_stage($nav_path)
+	{
+		$this->navigation_data['finished'][] = $nav_path;
+	}
+
+	/**
+	 * Marks stage as active in the navigation bar
+	 *
+	 * @param array	$nav_path	Array to the navigation elem
+	 */
+	public function set_active_navigation_stage($nav_path)
+	{
+		$this->navigation_data['active'] = $nav_path;
+	}
+
+	/**
+	 * Returns navigation data
+	 *
+	 * @return array
+	 */
+	public function get_navigation_data()
+	{
+		return $this->navigation_data;
+	}
+
 	/**
 	 * Filling up system_data array
 	 */

phpBB/install/helper/iohandler/ajax_iohandler.php

@@ -33,6 +33,16 @@ class ajax_iohandler extends iohandler_base
 	 */
 	protected $form;
 
+	/**
+	 * @var bool
+	 */
+	protected $request_client_refresh;
+
+	/**
+	 * @var array
+	 */
+	protected $nav_data;
+
 	/**
 	 * Constructor
 	 *
@@ -44,6 +54,7 @@ class ajax_iohandler extends iohandler_base
 		$this->request	= $request;
 		$this->template	= $template;
 		$this->form		= '';
+		$this->nav_data	= array();
 
 		parent::__construct();
 	}
@@ -89,6 +100,8 @@ class ajax_iohandler extends iohandler_base
 		// This code is pretty ugly... but works
 		//
 
+		$this->template->assign_var('S_FORM_ELEM_COUNT', sizeof($form));
+
 		$this->template->assign_block_vars('options', array(
 			'LEGEND'	=> $this->language->lang($title),
 			'S_LEGEND'	=> true,
@@ -187,9 +200,21 @@ class ajax_iohandler extends iohandler_base
 			);
 		}
 
+		if (!empty($this->nav_data))
+		{
+			$json_array['nav'] = $this->nav_data;
+		}
+
 		$this->errors = array();
 		$this->warnings = array();
 		$this->logs = array();
+		$this->nav_data = array();
+
+		if ($this->request_client_refresh)
+		{
+			$json_array['refresh'] = true;
+			$this->request_client_refresh = false;
+		}
 
 		return $json_array;
 	}
@@ -203,6 +228,32 @@ class ajax_iohandler extends iohandler_base
 		$this->send_response();
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function request_refresh()
+	{
+		$this->request_client_refresh = true;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set_active_stage_menu($menu_path)
+	{
+		$this->nav_data['active'] = $menu_path[sizeof($menu_path) - 1];
+		$this->send_response();
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set_finished_stage_menu($menu_path)
+	{
+		$this->nav_data['finished'][] = $menu_path[sizeof($menu_path) - 1];
+		$this->send_response();
+	}
+
 	/**
 	 * Callback function for language replacing
 	 *

phpBB/install/helper/iohandler/factory.php

@@ -64,6 +64,10 @@ class factory
 			case 'ajax':
 				return $this->container->get('installer.helper.iohandler_ajax');
 			break;
+			case 'nojs':
+				// @todo replace this
+				return $this->container->get('installer.helper.iohandler_ajax');
+			break;
 			default:
 				throw new iohandler_not_implemented_exception();
 			break;

phpBB/install/helper/iohandler/iohandler_interface.php

@@ -123,4 +123,23 @@ interface iohandler_interface
 	 * @param int		$task_number	Position of the current task in the task queue
 	 */
 	public function set_progress($task_lang_key, $task_number);
+
+	/**
+	 * Sends refresh request to the client
+	 */
+	public function request_refresh();
+
+	/**
+	 * Marks stage as active in the navigation bar
+	 *
+	 * @param array	$menu_path	Array to the navigation elem
+	 */
+	public function set_active_stage_menu($menu_path);
+
+	/**
+	 * Marks stage as completed in the navigation bar
+	 *
+	 * @param array	$menu_path	Array to the navigation elem
+	 */
+	public function set_finished_stage_menu($menu_path);
 }

phpBB/install/helper/navigation/install_navigation.php

@@ -21,8 +21,30 @@ class install_navigation implements navigation_interface
 			'install'	=> array(
 				'label'	=> 'INSTALL',
 				'route'	=> 'phpbb_installer_install',
+				'order'	=> 1,
+				array(
+					'introduction'	=> array(
+						'label'	=> 'INTRODUCTION_TITLE',
+						'stage'	=> true,
 						'order'	=> 0,
 					),
+					'requirements'	=> array(
+						'label'	=> 'STAGE_REQUIREMENTS',
+						'stage'	=> true,
+						'order'	=> 1,
+					),
+					'obtain_data'	=> array(
+						'label'	=> 'STAGE_OBTAIN_DATA',
+						'stage'	=> true,
+						'order'	=> 2,
+					),
+					'install'	=> array(
+						'label'	=> 'STAGE_INSTALL',
+						'stage'	=> true,
+						'order'	=> 3,
+					),
+				),
+			),
 		);
 	}
 }

phpBB/install/helper/navigation/navigation_provider.php

@@ -13,6 +13,8 @@
 
 namespace phpbb\install\helper\navigation;
 
+use phpbb\di\service_collection;
+
 /**
  * Installers navigation provider
  */
@@ -26,9 +28,9 @@ class navigation_provider
 	/**
 	 * Constructor
 	 *
-	 * @param \phpbb\di\service_collection                              $plugins
+	 * @param service_collection		$plugins
 	 */
-	public function __construct(\phpbb\di\service_collection $plugins)
+	public function __construct(service_collection $plugins)
 	{
 		$this->menu_collection	= array();
 
@@ -59,6 +61,27 @@ class navigation_provider
 		$this->merge($nav_arry, $this->menu_collection);
 	}
 
+	/**
+	 * Set a property in the navigation array
+	 *
+	 * @param array	$nav_element	Array to the navigation elem
+	 * @param array	$property_array	Array with the properties to set
+	 */
+	public function set_nav_property($nav_element, $property_array)
+	{
+		$array_pointer = array();
+		$array_root_pointer = &$array_pointer;
+		foreach ($nav_element as $array_path)
+		{
+			$array_pointer[$array_path] = array();
+			$array_pointer = &$array_pointer[$array_path];
+		}
+
+		$array_pointer = $property_array;
+
+		$this->merge($array_root_pointer, $this->menu_collection);
+	}
+
 	/**
 	 * Recursive array merge
 	 *

phpBB/install/installer.php

@@ -13,6 +13,7 @@
 
 namespace phpbb\install;
 
+use phpbb\install\exception\installer_config_not_writable_exception;
 use phpbb\install\exception\invalid_service_name_exception;
 use phpbb\install\exception\module_not_found_exception;
 use phpbb\install\exception\task_not_found_exception;
@@ -106,6 +107,10 @@ class installer
 		// Flag used by exception handling, whether or not we need to flush output buffer once again
 		$flush_messages = false;
 
+		// We are installing something, so the introduction stage can go now...
+		$this->install_config->set_finished_navigation_stage(array('install', 0, 'introduction'));
+		$this->iohandler->set_finished_stage_menu(array('install', 0, 'introduction'));
+
 		try
 		{
 			if ($this->install_config->get_task_progress_count() === 0)
@@ -168,6 +173,9 @@ class installer
 				// Check if module should be executed
 				if (!$module->is_essential() && !$module->check_requirements())
 				{
+					$this->install_config->set_finished_navigation_stage($module->get_navigation_stage_path());
+					$this->iohandler->set_finished_stage_menu($module->get_navigation_stage_path());
+
 					$this->iohandler->add_log_message(array(
 						'SKIP_MODULE',
 						$module_service_name,
@@ -176,8 +184,15 @@ class installer
 					continue;
 				}
 
+				// Set the correct stage in the navigation bar
+				$this->install_config->set_active_navigation_stage($module->get_navigation_stage_path());
+				$this->iohandler->set_active_stage_menu($module->get_navigation_stage_path());
+
 				$module->run();
 
+				$this->install_config->set_finished_navigation_stage($module->get_navigation_stage_path());
+				$this->iohandler->set_finished_stage_menu($module->get_navigation_stage_path());
+
 				// Clear task progress
 				$this->install_config->set_finished_task('', 0);
 			}
@@ -189,12 +204,12 @@ class installer
 			}
 			else
 			{
-				// @todo: Send refresh request
+				$this->iohandler->request_refresh();
 			}
 		}
 		catch (user_interaction_required_exception $e)
 		{
-			// @todo handle exception
+			// Do nothing
 		}
 		catch (module_not_found_exception $e)
 		{
@@ -234,8 +249,21 @@ class installer
 		}
 
 		// Save install progress
+		try
+		{
 			$this->install_config->save_config();
 		}
+		catch (installer_config_not_writable_exception $e)
+		{
+			// It is allowed to fail this test during requirements testing
+			$progress_data = $this->install_config->get_progress_data();
+
+			if ($progress_data['last_task_module_name'] !== 'installer.module.requirements_install')
+			{
+				$this->iohandler->add_error_message('INSTALLER_CONFIG_NOT_WRITABLE');
+			}
+		}
+	}
 
 	/**
 	 * Recover install progress

phpBB/install/module/install_data/module.php

@@ -18,5 +18,11 @@ namespace phpbb\install\module\install_data;
  */
 class module extends \phpbb\install\module_base
 {
-
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'install');
+	}
 }

phpBB/install/module/install_database/module.php

@@ -18,5 +18,11 @@ namespace phpbb\install\module\install_database;
  */
 class module extends \phpbb\install\module_base
 {
-
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'install');
+	}
 }

phpBB/install/module/install_filesystem/module.php

@@ -18,5 +18,11 @@ namespace phpbb\install\module\install_filesystem;
  */
 class module extends \phpbb\install\module_base
 {
-
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'install');
+	}
 }

phpBB/install/module/install_finish/module.php

@@ -18,5 +18,11 @@ namespace phpbb\install\module\install_finish;
  */
 class module extends \phpbb\install\module_base
 {
-
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'install');
+	}
 }

phpBB/install/module/obtain_data/module.php

@@ -15,6 +15,14 @@ namespace phpbb\install\module\obtain_data;
 
 class module extends \phpbb\install\module_base
 {
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'obtain_data');
+	}
+
 	/**
 	 * {@inheritdoc}
 	 */

phpBB/install/module/requirements/module.php

@@ -61,6 +61,15 @@ class module extends \phpbb\install\module_base
 		if (!$tests_passed)
 		{
 			// If requirements are not met, exit form installer
+			// Set up UI for retesting
+			$this->iohandler->add_user_form_group('', array(
+				'install'	=> array(
+					'label'	=> 'RETEST_REQUIREMENTS',
+					'type'	=> 'submit',
+				),
+			));
+
+			// Send the response and quit
 			$this->iohandler->send_response();
 			throw new user_interaction_required_exception();
 		}
@@ -77,4 +86,12 @@ class module extends \phpbb\install\module_base
 	{
 		return 0;
 	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'requirements');
+	}
 }

phpBB/install/module_interface.php

@@ -53,4 +53,11 @@ interface module_interface
 	 * @return int
 	 */
 	public function get_step_count();
+
+	/**
+	 * Returns an array to the correct navigation stage
+	 *
+	 * @return array
+	 */
+	public function get_navigation_stage_path();
 }

phpBB/language/en/install.php

@@ -40,6 +40,8 @@ if (empty($lang) || !is_array($lang))
 $lang = array_merge($lang, array(
 	'INSTALL_PANEL'	=> 'Installation Panel',
 
+	'STAGE_INSTALL'	=> 'Installing phpBB',
+
 	// Introduction page
 	'INTRODUCTION_TITLE'	=> 'Introduction',
 	'INTRODUCTION_BODY'		=> 'Welcome to phpBB3!<br /><br />phpBB® is the most widely used open source bulletin board solution in the world. phpBB3 is the latest installment in a package line started in 2000. Like its predecessors, phpBB3 is feature-rich, user-friendly, and fully supported by the phpBB Team. phpBB3 greatly improves on what made phpBB2 popular, and adds commonly requested features that were not present in previous versions. We hope it exceeds your expectations.<br /><br />This installation system will guide you through installing phpBB3, updating to the latest version of phpBB3 from past releases, as well as converting to phpBB3 from a different discussion board system (including phpBB2). For more information, we encourage you to read <a href="../docs/INSTALL.html">the installation guide</a>.<br /><br />To read the phpBB3 license or learn about obtaining support and our stance on it, please select the respective options from the side menu. To continue, please select the appropriate tab above.',
@@ -50,6 +52,33 @@ $lang = array_merge($lang, array(
 
 	// License
 	'LICENSE_TITLE'		=> 'General Public License',
+
+	// Install page
+	'INSTALL_INTRO'			=> 'Welcome to Installation',
+	'INSTALL_INTRO_BODY'	=> 'With this option, it is possible to install phpBB3 onto your server.</p><p>In order to proceed, you will need your database settings. If you do not know your database settings, please contact your host and ask for them. You will not be able to continue without them. You need:</p>
+
+	<ul>
+		<li>The Database Type - the database you will be using.</li>
+		<li>The Database server hostname or DSN - the address of the database server.</li>
+		<li>The Database server port - the port of the database server (most of the time this is not needed).</li>
+		<li>The Database name - the name of the database on the server.</li>
+		<li>The Database username and Database password - the login data to access the database.</li>
+	</ul>
+
+	<p><strong>Note:</strong> if you are installing using SQLite, you should enter the full path to your database file in the DSN field and leave the username and password fields blank. For security reasons, you should make sure that the database file is not stored in a location accessible from the web.</p>
+
+	<p>phpBB3 supports the following databases:</p>
+	<ul>
+		<li>MySQL 3.23 or above (MySQLi supported)</li>
+		<li>PostgreSQL 8.3+</li>
+		<li>SQLite 2.8.2+</li>
+		<li>SQLite 3.6.15+</li>
+		<li>MS SQL Server 2000 or above (directly or via ODBC)</li>
+		<li>MS SQL Server 2005 or above (native)</li>
+		<li>Oracle</li>
+	</ul>
+
+	<p>Only those databases supported on your server will be displayed.',
 ));
 
 // Requirements translation
@@ -76,6 +105,10 @@ $lang = array_merge($lang, array(
 	'PHP_JSON_SUPPORT_EXPLAIN'			=> 'In order for phpBB to function correctly, the PHP JSON extension needs to be available.',
 	'PHP_SUPPORTED_DB'					=> 'Supported databases',
 	'PHP_SUPPORTED_DB_EXPLAIN'			=> 'You must have support for at least one compatible database within PHP. If no database modules are shown as available you should contact your hosting provider or review the relevant PHP installation documentation for advice.',
+
+	'RETEST_REQUIREMENTS'	=> 'Retest requirements',
+
+	'STAGE_REQUIREMENTS'	=> 'Check requirements'
 ));
 
 // General error messages
@@ -85,6 +118,8 @@ $lang = array_merge($lang, array(
 
 // Data obtaining translations
 $lang = array_merge($lang, array(
+	'STAGE_OBTAIN_DATA'	=> 'Set installation data',
+
 	//
 	// Admin data
 	//
@@ -263,4 +298,6 @@ $lang = array_merge($lang, array(
 
 	'TASK_SERVICE_INSTALLER_MISSING'	=> 'All installer task services should start with “installer”',
 	'TASK_CLASS_NOT_FOUND'				=> 'Installer task service definition is invalid. Service name “%1$s” given, the expected class namespace is “%2$s” for that. For more information please see the documentation of task_interface.',
+
+	'INSTALLER_CONFIG_NOT_WRITABLE'	=> 'The installer config file is not writable.',
 ));