1 files changed, 400 insertions, 0 deletions
diff --git a/phpBB/assets/javascript/installer.js b/phpBB/assets/javascript/installer.js
new file mode 100644
index 0000000000..56bfd6aea9
--- /dev/null
+++ b/phpBB/assets/javascript/installer.js
@@ -0,0 +1,400 @@
+/**
+ * Installer's AJAX frontend handler
+ */
+
+(function($) { // Avoid conflicts with other libraries
+	'use strict';
+
+	// Installer variables
+	var pollTimer = null;
+	var nextReadPosition = 0;
+	var progressBarTriggered = false;
+	var progressTimer = null;
+	var currentProgress = 0;
+
+	// Template related variables
+	var $contentWrapper = $('.install-body').find('.main');
+
+	// Intercept form submits
+	interceptFormSubmit($('#install_install'));
+
+	/**
+	 * Creates an XHR object
+	 *
+	 * jQuery cannot be used as the response is streamed, and
+	 * as of now, jQuery does not provide access to the response until
+	 * the connection is not closed.
+	 *
+	 * @return XMLHttpRequest
+	 */
+	function createXhrObject() {
+		return new XMLHttpRequest();
+	}
+
+	/**
+	 * Displays error, warning and log messages
+	 *
+	 * @param type
+	 * @param messages
+	 */
+	function addMessage(type, messages) {
+		// Get message containers
+		var $errorContainer = $('#error-container');
+		var $warningContainer = $('#warning-container');
+		var $logContainer = $('#log-container');
+
+		var $title, $description, $msgElement, arraySize = messages.length;
+		for (var i = 0; i < arraySize; i++) {
+			$msgElement = $('<div />');
+			$title = $('<strong />');
+			$title.text(messages[i].title);
+			$msgElement.append($title);
+
+			if (messages[i].hasOwnProperty('description')) {
+				$description = $('<p />');
+				$description.html(messages[i].description);
+				$msgElement.append($description);
+			}
+
+			switch (type) {
+				case 'error':
+					$msgElement.addClass('errorbox');
+					$errorContainer.append($msgElement);
+					break;
+				case 'warning':
+					$msgElement.addClass('warningbox');
+					$warningContainer.append($msgElement);
+					break;
+				case 'log':
+					$msgElement.addClass('log');
+					$logContainer.append($msgElement);
+					break;
+				case 'success':
+					$msgElement.addClass('successbox');
+					$errorContainer.prepend($msgElement);
+					break;
+			}
+		}
+	}
+
+	/**
+	 * Displays a form from the response
+	 *
+	 * @param formHtml
+	 */
+	function addForm(formHtml) {
+		var $formContainer = $('#content-container');
+		$formContainer.html(formHtml);
+		var $form = $('#install_install');
+		interceptFormSubmit($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
+	 *
+	 * @param progressObject
+	 */
+	function setProgress(progressObject) {
+		var $statusText, $progressBar, $progressText, $progressFiller;
+
+		if (progressObject.task_name.length) {
+			if (!progressBarTriggered) {
+				// Create progress bar
+				var $contentContainer = $('#content-container');
+
+				// Create progress bar elements
+				$progressBar = $('<div />');
+				$progressBar.attr('id', 'progress-bar');
+				$progressText = $('<p />');
+				$progressText.attr('id', 'progress-bar-text');
+				$progressFiller = $('<span />');
+				$progressFiller.attr('id', 'progress-bar-filler');
+
+				$statusText = $('<p />');
+				$statusText.attr('id', 'progress-status-text');
+
+				$progressBar.append($progressFiller);
+				$progressBar.append($progressText);
+
+				$contentContainer.append($statusText);
+				$contentContainer.append($progressBar);
+
+				progressBarTriggered = true;
+			} else {
+				$statusText = $('#progress-status-text');
+			}
+
+			// Update progress bar
+			$statusText.text(progressObject.task_name + '…');
+			incrementProgressBar(Math.round(progressObject.task_num / progressObject.task_count * 100));
+		}
+	}
+
+	// Set cookies
+	function setCookies(cookies) {
+		var cookie;
+
+		for (var i = 0; i < cookies.length; i++) {
+			// Set cookie name and value
+			cookie = encodeURIComponent(cookies[i].name) + '=' + encodeURIComponent(cookies[i].value);
+			// Set path
+			cookie += '; path=/';
+			document.cookie = cookie;
+		}
+	}
+
+	/**
+	 * Parse messages from the response object
+	 *
+	 * @param messageJSON
+	 */
+	function parseMessage(messageJSON) {
+		$('#loading_indicator').css('display', 'none');
+
+		var responseObject = JSON.parse(messageJSON);
+
+		// Parse object
+		if (responseObject.hasOwnProperty('errors')) {
+			addMessage('error', responseObject.errors);
+		}
+
+		if (responseObject.hasOwnProperty('warnings')) {
+			addMessage('warning', responseObject.warnings);
+		}
+
+		if (responseObject.hasOwnProperty('logs')) {
+			addMessage('log', responseObject.logs);
+		}
+
+		if (responseObject.hasOwnProperty('success')) {
+			addMessage('success', responseObject.success);
+		}
+
+		if (responseObject.hasOwnProperty('form')) {
+			addForm(responseObject.form);
+		}
+
+		if (responseObject.hasOwnProperty('progress')) {
+			setProgress(responseObject.progress);
+		}
+
+		if (responseObject.hasOwnProperty('nav')) {
+			updateNavbarStatus(responseObject.nav);
+		}
+
+		if (responseObject.hasOwnProperty('cookies')) {
+			setCookies(responseObject.cookies);
+		}
+	}
+
+	/**
+	 * Process updates in streamed response
+	 *
+	 * @param xhReq   XHR object
+	 */
+	function pollContent(xhReq) {
+		var messages = xhReq.responseText;
+		var msgSeparator = '}\n\n';
+		var unprocessed, messageEndIndex, endOfMessageIndex, message;
+
+		do {
+			unprocessed = messages.substring(nextReadPosition);
+			messageEndIndex = unprocessed.indexOf(msgSeparator);
+
+			if (messageEndIndex !== -1) {
+				endOfMessageIndex = messageEndIndex + msgSeparator.length;
+				message = unprocessed.substring(0, endOfMessageIndex);
+				parseMessage(message);
+				nextReadPosition += endOfMessageIndex;
+			}
+		} while (messageEndIndex !== -1);
+
+		if (xhReq.readyState === 4) {
+			$('#loading_indicator').css('display', 'none');
+			resetPolling();
+		}
+	}
+
+	/**
+	 * Animates the progress bar
+	 *
+	 * @param $progressText
+	 * @param $progressFiller
+	 * @param progressLimit
+	 */
+	function incrementFiller($progressText, $progressFiller, progressLimit) {
+		if (currentProgress >= progressLimit || currentProgress >= 100) {
+			clearInterval(progressTimer);
+			return;
+		}
+
+		currentProgress++;
+		$progressText.text(currentProgress + '%');
+		$progressFiller.css('width', currentProgress + '%');
+	}
+
+	/**
+	 * Wrapper function for progress bar rendering and animating
+	 *
+	 * @param progressLimit
+	 */
+	function incrementProgressBar(progressLimit) {
+		var $progressFiller = $('#progress-bar-filler');
+		var $progressText = $('#progress-bar-text');
+		var progressStart = $progressFiller.width() / $progressFiller.offsetParent().width() * 100;
+		currentProgress = Math.floor(progressStart);
+
+		clearInterval(progressTimer);
+		progressTimer = setInterval(function() {
+			incrementFiller($progressText, $progressFiller, progressLimit);
+		}, 10);
+	}
+
+	/**
+	 * Resets the polling timer
+	 */
+	function resetPolling() {
+		clearInterval(pollTimer);
+		nextReadPosition = 0;
+	}
+
+	/**
+	 * Sets up timer for processing the streamed HTTP response
+	 *
+	 * @param xhReq
+	 */
+	function startPolling(xhReq) {
+		resetPolling();
+		pollTimer = setInterval(function () {
+			pollContent(xhReq);
+		}, 250);
+	}
+
+	/**
+	 * Renders the AJAX UI layout
+	 */
+	function setupAjaxLayout() {
+		// Clear content
+		$contentWrapper.html('');
+
+		var $header = $('<div />');
+		$header.attr('id', 'header-container');
+		$contentWrapper.append($header);
+
+		var $description = $('<div />');
+		$description.attr('id', 'description-container');
+		$contentWrapper.append($description);
+
+		var $errorContainer = $('<div />');
+		$errorContainer.attr('id', 'error-container');
+		$contentWrapper.append($errorContainer);
+
+		var $warningContainer = $('<div />');
+		$warningContainer.attr('id', 'warning-container');
+		$contentWrapper.append($warningContainer);
+
+		var $installerContentWrapper = $('<div />');
+		$installerContentWrapper.attr('id', 'content-container');
+		$contentWrapper.append($installerContentWrapper);
+
+		var $logContainer = $('<div />');
+		$logContainer.attr('id', 'log-container');
+		$contentWrapper.append($logContainer);
+
+		var $spinner = $('<div />');
+		$spinner.attr('id', 'loading_indicator');
+		$spinner.html('&nbsp;');
+		$contentWrapper.append($spinner);
+	}
+
+	// Submits a form
+	function submitForm($form, $submitBtn) {
+		$form.css('display', 'none');
+
+		var xhReq = createXhrObject();
+		xhReq.open('POST', $form.attr('action'), true);
+		xhReq.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+		xhReq.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
+		xhReq.send(getFormFields($form, $submitBtn));
+
+		// Disable language selector
+		$('#language_selector :input, label').css('display', 'none');
+
+		// Clear content
+		setupAjaxLayout();
+		$('#loading_indicator').css('display', 'block');
+
+		startPolling(xhReq);
+	}
+
+	/**
+	 * Add submit button to the POST information
+	 *
+	 * @param $form
+	 * @param $submitBtn
+	 *
+	 * @returns {*}
+	 */
+	function getFormFields($form, $submitBtn) {
+		var formData = $form.serialize();
+		formData += ((formData.length) ? '&' : '') + encodeURIComponent($submitBtn.attr('name')) + '=';
+		formData += encodeURIComponent($submitBtn.attr('value'));
+
+		return formData;
+	}
+
+	/**
+	 * Intercept form submit events and determine the submit button used
+	 *
+	 * @param $form
+	 */
+	function interceptFormSubmit($form) {
+		if (!$form.length) {
+			return;
+		}
+
+		$form.find(':submit').bind('click', function (event) {
+			event.preventDefault();
+			submitForm($form, $(this));
+		});
+	}
+})(jQuery); // Avoid conflicts with other libraries