mirror of
https://github.com/sbrl/Pepperminty-Wiki.git
synced 2024-11-22 04:23:01 +00:00
570 lines
19 KiB
PHP
570 lines
19 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Renders the HTML page that is sent to the client.
|
|
* @package core
|
|
*/
|
|
class page_renderer
|
|
{
|
|
/**
|
|
* The root HTML template that all pages are built from.
|
|
* @var string
|
|
* @package core
|
|
*/
|
|
public static $html_template = "<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset='utf-8' />
|
|
<title>{title}</title>
|
|
<meta name='viewport' content='width=device-width, initial-scale=1' />
|
|
<meta name='generator' content='Pepperminty Wiki {version}' />
|
|
<link rel='shortcut-icon' href='{favicon-url}' />
|
|
<link rel='icon' href='{favicon-url}' />
|
|
{header-html}
|
|
</head>
|
|
<body>
|
|
{body}
|
|
<!-- Took {generation-time-taken}ms to generate -->
|
|
</body>
|
|
</html>
|
|
";
|
|
/**
|
|
* The main content template that is used to render normal wiki pages.
|
|
* @var string
|
|
* @package core
|
|
*/
|
|
public static $main_content_template = "{navigation-bar}
|
|
<h1 class='sitename'>{sitename}</h1>
|
|
<main>
|
|
{content}
|
|
</main>
|
|
{extra}
|
|
<footer>
|
|
<p>{footer-message}</p>
|
|
<p>Powered by Pepperminty Wiki {version}, which was built by <a href='//starbeamrainbowlabs.com/'>Starbeamrainbowlabs</a>. Send bugs to 'bugs at starbeamrainbowlabs dot com' or <a href='//github.com/sbrl/Pepperminty-Wiki' title='Github Issue Tracker'>open an issue</a>.</p>
|
|
<p>Your local friendly moderators are {admins-name-list}.</p>
|
|
<p>This wiki is managed by <a href='mailto:{admin-details-email}'>{admin-details-name}</a>.</p>
|
|
</footer>
|
|
{navigation-bar-bottom}
|
|
{all-pages-datalist}";
|
|
/**
|
|
* A specially minified content template that doesn't include the navbar and
|
|
* other elements not suitable for printing.
|
|
* @var string
|
|
* @package core
|
|
*/
|
|
public static $minimal_content_template = "<main class='printable'>{content}</main>
|
|
<footer class='printable'>
|
|
<hr class='footerdivider' />
|
|
<p><em>From {sitename}, which is managed by {admin-details-name}.</em></p>
|
|
<p>{footer-message}</p>
|
|
<p><em>Timed at {generation-date}</em></p>
|
|
<p><em>Powered by Pepperminty Wiki {version}.</em></p>
|
|
</footer>";
|
|
|
|
/**
|
|
* An array of items indicating the resources to ask the web server to push
|
|
* down to the client with HTTP/2.0 server push.
|
|
* Format: [ [type, path], [type, path], .... ]
|
|
* @var array[]
|
|
*/
|
|
protected static $http2_push_items = [];
|
|
|
|
|
|
/**
|
|
* A string of extrar HTML that should be included at the bottom of the page <head>.
|
|
* @var string
|
|
*/
|
|
private static $extraHeaderHTML = "";
|
|
|
|
/**
|
|
* The javascript snippets that will be included in the page.
|
|
* @var string[]
|
|
* @package core
|
|
*/
|
|
private static $jsSnippets = [];
|
|
/**
|
|
* The urls of the external javascript files that should be referenced
|
|
* by the page.
|
|
* @var string[]
|
|
* @package core
|
|
*/
|
|
private static $jsLinks = [];
|
|
|
|
/**
|
|
* The navigation bar divider.
|
|
* @package core
|
|
* @var string
|
|
*/
|
|
public static $nav_divider = "<span class='nav-divider inflexible'> | </span>";
|
|
|
|
|
|
/**
|
|
* An array of functions that have been registered to process the
|
|
* find / replace array before the page is rendered. Note that the function
|
|
* should take a *reference* to an array as its only argument.
|
|
* @var array
|
|
* @package core
|
|
*/
|
|
protected static $part_processors = [];
|
|
|
|
/**
|
|
* Registers a function as a part post processor.
|
|
* This function's use is more complicated to explain. Pepperminty Wiki
|
|
* renders pages with a very simple templating system. For example, in the
|
|
* template a page's content is denoted by `{content}`. A function
|
|
* registered here will be passed all the components of a page _just_
|
|
* before they are dropped into the template. Note that the function you
|
|
* pass in here should take a *reference* to the components, as the return
|
|
* value of the function passed is discarded.
|
|
* @package core
|
|
* @param callable $function The part preprocessor to register.
|
|
*/
|
|
public static function register_part_preprocessor($function) {
|
|
global $settings;
|
|
|
|
// Make sure that the function we are about to register is valid
|
|
if(!is_callable($function))
|
|
{
|
|
http_response_code(500);
|
|
$admin_email = hide_email($settings->admindetails_email);
|
|
exit(page_renderer::render("$settings->sitename - Module Error", "<p>$settings->sitename has got a misbehaving module installed that tried to register an invalid HTML handler with the page renderer. Please contact $settings->sitename's administrator {$settings->admindetails_name} at <a href='mailto:$admin_email'>$admin_email</a>."));
|
|
}
|
|
|
|
self::$part_processors[] = $function;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Renders a HTML page with the content specified.
|
|
* @package core
|
|
* @param string $title The title of the page.
|
|
* @param string $content The (HTML) content of the page.
|
|
* @param bool $body_template The HTML content template to use.
|
|
* @return string The rendered HTML, ready to send to the client :-)
|
|
*/
|
|
public static function render($title, $content, $body_template = false)
|
|
{
|
|
global $settings, $start_time, $version;
|
|
|
|
if($body_template === false)
|
|
$body_template = self::$main_content_template;
|
|
|
|
if(strlen($settings->logo_url) > 0) {
|
|
// A logo url has been specified
|
|
$logo_html = "<img aria-hidden='true' class='logo" . (isset($_GET["printable"]) ? " small" : "") . "' src='$settings->logo_url' />";
|
|
switch($settings->logo_position) {
|
|
case "left":
|
|
$logo_html = "$logo_html $settings->sitename";
|
|
break;
|
|
case "right":
|
|
$logo_html .= " $settings->sitename";
|
|
break;
|
|
default:
|
|
throw new Exception("Invalid logo_position '$settings->logo_position'. Valid values are either \"left\" or \"right\" and are case sensitive.");
|
|
}
|
|
}
|
|
|
|
// Push the logo via HTTP/2.0 if possible
|
|
if($settings->favicon[0] === "/") self::$http2_push_items[] = ["image", $settings->favicon];
|
|
|
|
$parts = [
|
|
"{body}" => $body_template,
|
|
|
|
"{sitename}" => $logo_html,
|
|
"{version}" => $version,
|
|
"{favicon-url}" => $settings->favicon,
|
|
"{header-html}" => self::get_header_html(),
|
|
|
|
"{navigation-bar}" => self::render_navigation_bar($settings->nav_links, $settings->nav_links_extra, "top"),
|
|
"{navigation-bar-bottom}" => self::render_navigation_bar($settings->nav_links_bottom, [], "bottom"),
|
|
|
|
"{admin-details-name}" => $settings->admindetails_name,
|
|
"{admin-details-email}" => $settings->admindetails_email,
|
|
|
|
"{admins-name-list}" => implode(", ", array_map(function($username) { return page_renderer::render_username($username); }, $settings->admins)),
|
|
|
|
"{generation-date}" => date("l jS \of F Y \a\\t h:ia T"),
|
|
|
|
"{all-pages-datalist}" => self::generate_all_pages_datalist(),
|
|
|
|
"{footer-message}" => $settings->footer_message,
|
|
|
|
/// Secondary Parts ///
|
|
|
|
"{content}" => $content,
|
|
"{extra}" => "",
|
|
"{title}" => $title,
|
|
];
|
|
|
|
// Pass the parts through the part processors
|
|
foreach(self::$part_processors as $function) {
|
|
$function($parts);
|
|
}
|
|
|
|
$result = self::$html_template;
|
|
|
|
$result = str_replace(array_keys($parts), array_values($parts), $result);
|
|
|
|
$result = str_replace("{generation-time-taken}", round((microtime(true) - $start_time)*1000, 2), $result);
|
|
// Send the HTTP/2.0 server push indicators if possible - but not if we're sending a redirect page
|
|
if(!headers_sent() && (http_response_code() < 300 || http_response_code() >= 400)) self::send_server_push_indicators();
|
|
return $result;
|
|
}
|
|
/**
|
|
* Renders a normal HTML page.
|
|
* @package core
|
|
* @param string $title The title of the page.
|
|
* @param string $content The content of the page.
|
|
* @return string The rendered page.
|
|
*/
|
|
public static function render_main($title, $content) {
|
|
return self::render($title, $content, self::$main_content_template);
|
|
}
|
|
/**
|
|
* Renders a minimal HTML page. Useful for printable pages.
|
|
* @package core
|
|
* @param string $title The title of the page.
|
|
* @param string $content The content of the page.
|
|
* @return string The rendered page.
|
|
*/
|
|
public static function render_minimal($title, $content) {
|
|
return self::render($title, $content, self::$minimal_content_template);
|
|
}
|
|
|
|
/**
|
|
* Sends the currently registered HTTP2 server push items to the client.
|
|
* @return int|false The number of resource hints included in the link: header, or false if server pushing is disabled.
|
|
*/
|
|
public static function send_server_push_indicators() {
|
|
global $settings;
|
|
if(!$settings->http2_server_push)
|
|
return false;
|
|
|
|
// Render the preload directives
|
|
$link_header_parts = [];
|
|
foreach(self::$http2_push_items as $push_item)
|
|
$link_header_parts[] = "<{$push_item[1]}>; rel=preload; as={$push_item[0]}";
|
|
|
|
// Send them in a link: header
|
|
if(!empty($link_header_parts))
|
|
header("link: " . implode(", ", $link_header_parts));
|
|
|
|
return count(self::$http2_push_items);
|
|
}
|
|
|
|
/**
|
|
* Renders the header HTML.
|
|
* @package core
|
|
* @return string The rendered HTML that goes in the header.
|
|
*/
|
|
public static function get_header_html()
|
|
{
|
|
global $settings;
|
|
$result = self::$extraHeaderHTML;
|
|
$result .= self::get_css_as_html();
|
|
$result .= self::_get_js();
|
|
|
|
// We can't use module_exists here because sometimes global $modules
|
|
// hasn't populated yet when we get called O.o
|
|
if(class_exists("search"))
|
|
$result .= "\t\t<link rel='search' type='application/opensearchdescription+xml' href='?action=opensearch-description' title='$settings->sitename Search' />\n";
|
|
|
|
if(!empty($settings->enable_math_rendering)) {
|
|
$result .= "<script type='text/x-mathjax-config'>
|
|
MathJax.Hub.Config({
|
|
tex2jax: {
|
|
inlineMath: [ ['$','$'], ['\\\\(','\\\\)'] ],
|
|
processEscapes: true,
|
|
skipTags: ['script','noscript','style','textarea','pre','code']
|
|
}
|
|
});
|
|
</script>";
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
/**
|
|
* Figures out whether $settings->css is a url, or a string of css.
|
|
* A url is something starting with "protocol://" or simply a "/".
|
|
* Before v0.20, this method took no arguments and checked $settings->css directly.
|
|
* @apiVerion 0.20.0
|
|
* @param string $str The CSS string to check.
|
|
* @return bool True if it's a url - false if we assume it's a string of css.
|
|
*/
|
|
public static function is_css_url($str) {
|
|
global $settings;
|
|
return preg_match("/^[^\/]*\/\/|^\/[^\*]/", $str);
|
|
}
|
|
/**
|
|
* Renders all the CSS as HTML.
|
|
* @package core
|
|
* @return string The css as HTML, ready to be included in the HTML header.
|
|
*/
|
|
public static function get_css_as_html()
|
|
{
|
|
global $settings, $defaultCSS;
|
|
|
|
$result = "";
|
|
$css = "";
|
|
if(self::is_css_url($settings->css)) {
|
|
if($settings->css[0] === "/") // Push it if it's a relative resource
|
|
self::add_server_push_indicator("style", $settings->css);
|
|
$result .= "<link rel='stylesheet' href='$settings->css' />\n";
|
|
} else {
|
|
$css .= $settings->css == "auto" ? $defaultCSS : $settings->css;
|
|
|
|
if(!empty($settings->optimize_pages))
|
|
$css = minify_css($css);
|
|
|
|
}
|
|
|
|
if(!empty($settings->css_custom)) {
|
|
if(self::is_css_url($settings->css_custom)) {
|
|
if($settings->css_custom[0] === "/") // Push it if it's a relative resource
|
|
self::add_server_push_indicator("style", $settings->css);
|
|
$result .= "<link rel='stylesheet' href='$settings->css_custom' />\n";
|
|
}
|
|
$css .= "\n/*** Custom CSS ***/\n";
|
|
$css .= !empty($settings->optimize_pages) ? minify_css($settings->css_custom) : $settings->css_custom;
|
|
$css .= "\n/******************/";
|
|
}
|
|
$result .= "<style>\n$css\n</style>\n";
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Adds the specified url to a javascript file as a reference to the page.
|
|
* @package core
|
|
* @param string $scriptUrl The url of the javascript file to reference.
|
|
*/
|
|
public static function add_js_link(string $scriptUrl) {
|
|
static::$jsLinks[] = $scriptUrl;
|
|
}
|
|
/**
|
|
* Adds a javascript snippet to the page.
|
|
* @package core
|
|
* @param string $script The snippet of javascript to add.
|
|
*/
|
|
public static function add_js_snippet(string $script) {
|
|
static::$jsSnippets[] = $script;
|
|
}
|
|
/**
|
|
* Renders the included javascript header for inclusion in the final
|
|
* rendered page.
|
|
* @package core
|
|
* @return string The rendered javascript ready for inclusion in the page.
|
|
*/
|
|
private static function _get_js() {
|
|
$result = "<!-- Javascript -->\n";
|
|
foreach(static::$jsSnippets as $snippet)
|
|
$result .= "<script defer>\n$snippet\n</script>\n";
|
|
foreach(static::$jsLinks as $link) {
|
|
// Push it via HTTP/2.0 if it's relative
|
|
if($link[0] === "/") self::add_server_push_indicator("script", $link);
|
|
$result .= "<script src='" . $link . "' defer></script>\n";
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
/**
|
|
* Adds a string of HTML to the header of the rendered page.
|
|
* @param string $html The string of HTML to add.
|
|
*/
|
|
public static function add_header_html($html) {
|
|
self::$extraHeaderHTML .= $html;
|
|
}
|
|
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
/**
|
|
* Adds a resource to the list of items to indicate that the web server should send via HTTP/2.0 Server Push.
|
|
* Note: Only specify static files here, as you might end up with strange (and possibly dangerous) results!
|
|
* @param string $type The resource type. See https://fetch.spec.whatwg.org/#concept-request-destination for more information.
|
|
* @param string $path The *relative url path* to the resource.
|
|
*/
|
|
public static function add_server_push_indicator($type, $path) {
|
|
self::$http2_push_items[] = [ $type, $path ];
|
|
}
|
|
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
|
|
/**
|
|
* Renders a navigation bar from an array of links. See
|
|
* $settings->nav_links for format information.
|
|
* @package core
|
|
* @param array $nav_links The links to add to the navigation bar.
|
|
* @param array $nav_links_extra The extra nav links to add to
|
|
* the "More..." menu.
|
|
* @param string $class The class(es) to assign to the rendered
|
|
* navigation bar.
|
|
*/
|
|
public static function render_navigation_bar($nav_links, $nav_links_extra, $class = "") {
|
|
global $settings, $env;
|
|
|
|
$mega_menu = false;
|
|
if(is_object($nav_links)) {
|
|
$mega_menu = true;
|
|
$class = trim("$class mega-menu");
|
|
$links_list = [];
|
|
$keys = array_keys(get_object_vars($nav_links));
|
|
foreach($keys as $key) {
|
|
$links_list[] = "category\0$key";
|
|
$links_list = array_merge(
|
|
$links_list,
|
|
$nav_links->$key
|
|
);
|
|
}
|
|
$nav_links = $links_list;
|
|
}
|
|
|
|
$result = "<nav class='$class'>\n";
|
|
$is_first_category = true;
|
|
// Loop over all the navigation links
|
|
foreach($nav_links as $item) {
|
|
if(!is_string($item)) {
|
|
// Output the item as a link to a url
|
|
$result .= "<span><a href='" . str_replace("{page}", rawurlencode($env->page), $item[1]) . "'>$item[0]</a></span>";
|
|
continue;
|
|
}
|
|
|
|
// Extract the item key - a null character can be used to separate extra data from an item type
|
|
$item_key = $item;
|
|
if(strpos($item_key, "\0") !== false)
|
|
$item_key = substr($item_key, 0, strpos($item_key, "\0"));
|
|
|
|
// The item is a string
|
|
switch($item_key) {
|
|
//keywords
|
|
case "user-status": // Renders the user status box
|
|
if($env->is_logged_in) {
|
|
$result .= "<span class='inflexible logged-in" . ($env->is_logged_in ? " moderator" : " normal-user") . "'>";
|
|
if(module_exists("feature-user-preferences")) {
|
|
$result .= "<a href='?action=user-preferences' aria-label='Change user preferences'>$settings->user_preferences_button_text</a>";
|
|
}
|
|
$result .= self::render_username($env->user);
|
|
$result .= " <small>(<a href='index.php?action=logout'>Logout</a>)</small>";
|
|
$result .= "</span>";
|
|
//$result .= page_renderer::$nav_divider;
|
|
}
|
|
else {
|
|
$returnto_url = $env->action !== "logout" ? $_SERVER["REQUEST_URI"] : "?action=view&page=" . rawurlencode($settings->defaultpage);
|
|
$result .= "<span class='not-logged-in'><a href='index.php?action=login&returnto=" . rawurlencode($returnto_url) . "'>Login</a></span>";
|
|
}
|
|
break;
|
|
|
|
case "search": // Renders the search bar
|
|
$result .= "<span class='inflexible'><form method='get' action='index.php' style='display: inline;'><input type='search' name='page' list='allpages' placeholder='🔎 Type a page name here and hit enter' /><input type='hidden' name='search-redirect' value='true' /></form></span>";
|
|
break;
|
|
|
|
case "divider": // Renders a divider
|
|
$result .= page_renderer::$nav_divider;
|
|
break;
|
|
|
|
case "menu": // Renders the "More..." menu
|
|
$result .= "<span class='inflexible nav-more'><label for='more-menu-toggler'>More...</label>
|
|
<input type='checkbox' class='off-screen' id='more-menu-toggler' />";
|
|
$result .= page_renderer::render_navigation_bar($nav_links_extra, [], "nav-more-menu");
|
|
$result .= "</span>";
|
|
break;
|
|
|
|
case "category": // Renders a category header
|
|
if(!$is_first_category) $result .= "</span>";
|
|
$result .= "<span class='category'><strong>" . substr($item, 9) . "</strong>";
|
|
$is_first_category = false;
|
|
break;
|
|
|
|
// It isn't a keyword, so just output it directly
|
|
default:
|
|
$result .= "<span>$item</span>";
|
|
}
|
|
}
|
|
if($mega_menu) $result .= "</span>";
|
|
|
|
$result .= "</nav>";
|
|
return $result;
|
|
}
|
|
/**
|
|
* Renders a username for inclusion in a page.
|
|
* @package core
|
|
* @param string $name The username to render.
|
|
* @return string The username rendered in HTML.
|
|
*/
|
|
public static function render_username($name) {
|
|
global $settings;
|
|
$result = "";
|
|
$result .= "<a href='?page=" . rawurlencode(get_user_pagename($name)) . "'>";
|
|
if($settings->avatars_show)
|
|
$result .= "<img class='avatar' aria-hidden='true' src='?action=avatar&user=" . urlencode($name) . "&size=$settings->avatars_size' /> ";
|
|
if(in_array($name, $settings->admins))
|
|
$result .= $settings->admindisplaychar;
|
|
$result .= htmlentities($name);
|
|
$result .= "</a>";
|
|
|
|
return $result;
|
|
}
|
|
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
/**
|
|
* Renders the datalist for the search box as HTML.
|
|
* @package core
|
|
* @return string The search box datalist as HTML.
|
|
*/
|
|
public static function generate_all_pages_datalist() {
|
|
global $settings, $pageindex;
|
|
$arrayPageIndex = get_object_vars($pageindex);
|
|
$sorter = new Collator("");
|
|
uksort($arrayPageIndex, function($a, $b) use($sorter) : int {
|
|
return $sorter->compare($a, $b);
|
|
});
|
|
$result = "<datalist id='allpages'>\n";
|
|
|
|
// If dynamic page sugggestions are enabled, then we should send a loading message instead.
|
|
if($settings->dynamic_page_suggestion_count > 0) {
|
|
$result .= "<option value='Loading suggestions...' />";
|
|
} else {
|
|
foreach($arrayPageIndex as $pagename => $pagedetails) {
|
|
$escapedPageName = str_replace('"', '"', $pagename);
|
|
$result .= "\t\t\t<option value=\"$escapedPageName\" />\n";
|
|
}
|
|
}
|
|
$result .= "\t\t</datalist>";
|
|
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
// HTTP/2.0 Server Push static items
|
|
foreach($settings->http2_server_push_items as $push_item) {
|
|
page_renderer::add_server_push_indicator($push_item[0], $push_item[1]);
|
|
}
|
|
|
|
// Math rendering support
|
|
if(!empty($settings->enable_math_rendering))
|
|
{
|
|
page_renderer::add_js_link("https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_CHTML");
|
|
}
|
|
// alt+enter support in the search box
|
|
page_renderer::add_js_snippet('// Alt + Enter support in the top search box
|
|
window.addEventListener("load", function(event) {
|
|
document.querySelector("input[type=search]").addEventListener("keyup", function(event) {
|
|
// Listen for Alt + Enter
|
|
if(event.keyCode == 13 && event.altKey) {
|
|
event.stopPropagation();
|
|
event.preventDefault();
|
|
event.cancelBubble = true;
|
|
event.target.form.setAttribute("target", "_blank");
|
|
event.target.form.submit();
|
|
event.target.form.removeAttribute("target");
|
|
return false; // Required by some browsers
|
|
}
|
|
});
|
|
});
|
|
');
|