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theme.php
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theme.php
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<?php
/**
This is the Filmmakers for Future theme.
This file contains the theme class of the Filmmakers for Future theme.
@package filmmakers4future\fm4ftheme
@version 0.1a7
@author Yahe <[email protected]>
@since 0.1a0
*/
// ===== DO NOT EDIT HERE =====
// prevent script from getting called directly
if (!defined("URLAUBE")) { die(""); }
class FM4FTheme extends BaseSingleton implements Theme {
// HELPER FUNCTIONS
protected static function configureTheme() {
// individual theme configuration
Themes::preset("copyright_html", null);
Themes::preset("page_image", static::getDefaultAttribute("PageImage",
function ($result) {
if ((PageHandler::class === Handlers::getActive())) {
if (0 < count(value(Main::class, CONTENT))) {
$pageImage = value(value(Main::class, CONTENT)[0], "PageImage");
if ($pageImage) {
$result = $pageImage;
}
}
}
return $result;
}));
Themes::preset("page_info", static::getDefaultAttribute("PageInfo", null));
Themes::preset("page_type", static::getDefaultAttribute("PageType",
function ($result) {
if (null === $result) {
$result = "website";
}
return $result;
}));
Themes::preset("replace_heading", static::getDefaultAttribute("ReplaceHeading",
function ($result) {
return istrue($result);
}));
Themes::preset("replace_section", static::getDefaultAttribute("ReplaceSection",
function ($result) {
return istrue($result);
}));
Themes::preset("section_alignment", static::getDefaultAttribute("SectionAlignment",
function ($result) {
// only allow supported values
switch (strtolower((string) $result)) {
case "alternate":
case "center":
case "left":
case "right":
break;
default:
$result = null;
}
return $result;
}));
Themes::preset("section_background", static::getDefaultAttribute("SectionBackground",
function ($result) {
// only allow supported values
switch (strtolower((string) $result)) {
case "alternate":
case "dark":
case "primary":
break;
default:
$result = null;
}
return $result;
}));
// static theme configuration
Themes::preset(FAVICON, null);
Themes::preset(MENU, null);
Themes::preset(SITENAME, "Filmmakers for Future");
Themes::preset(SITESLOGAN, null);
Themes::preset(TIMEFORMAT, "d F Y");
// recommended theme configuration
Themes::preset(AUTHOR, static::getDefaultAttribute(AUTHOR,
function ($result) {
// try to retrieve the first author
if (null === $result) {
foreach (value(Main::class, CONTENT) as $content_item) {
$author = value($content_item, AUTHOR);
if (null !== $author) {
$result = $author;
break;
}
}
}
return $result;
}));
Themes::preset(CANONICAL, static::getDefaultCanonical());
Themes::preset(CHARSET, static::getDefaultCharset());
Themes::preset(CONTENT, static::getDefaultAttribute(CONTENT, null));
Themes::preset(COPYRIGHT, static::getDefaultCopyright());
Themes::preset(DATE, static::getDefaultAttribute(DATE,
function ($result) {
// alternative retrieve file modification date of the
// first content object
if (null === $result) {
$content = preparecontent(value(Main::class, CONTENT),
null, [FilePlugin::FILE]);
if (null !== $content) {
if (is_file(value($content[0], FilePlugin::FILE))) {
$result = filemtime(value($content[0],
FilePlugin::FILE));
}
}
} else {
if (0 !== strcasecmp($result, "none")) {
// convert retrieved secret to a date
$result = strtotime($result);
} else {
$result = null;
}
}
if (null !== $result) {
$result = date(value(Themes::class, TIMEFORMAT), $result);
}
return $result;
}));
Themes::preset(DESCRIPTION, static::getDefaultAttribute(DESCRIPTION,
function ($result) {
if ((PageHandler::class === Handlers::getActive())) {
if (0 < count(value(Main::class, CONTENT))) {
$description = value(value(Main::class, CONTENT)[0], DESCRIPTION);
if ($description) {
$result = $description;
}
}
}
return $result;
}));
Themes::preset(KEYWORDS, static::getDefaultAttribute(KEYWORDS,
function ($result) {
if (null === $result) {
// retrieve all words from the titles and pagenames
$words = [];
foreach (value(Main::class, CONTENT) as $content_item) {
$pagename = value($content_item, PAGENAME);
if (null !== $pagename) {
$words = array_merge($words, explode(SP, $pagename));
}
$title = value($content_item, TITLE);
if (null !== $title) {
$words = array_merge($words, explode(SP, $title));
}
}
// filter all words that do not fit the scheme
for ($index = count($words)-1; $index >= 0; $index--) {
if (1 !== preg_match("~^[0-9A-Za-z\-]+$~", $words[$index])) {
unset($words[$index]);
}
}
$result = implode(DP.SP, $words);
}
return $result;
}));
Themes::preset(LANGUAGE, static::getDefaultLanguage());
Themes::preset(PAGENAME, static::getDefaultPagename());
Themes::preset(TITLE, static::getDefaultAttribute(TITLE,
function ($result) {
if (null === $result) {
$result = value(Themes::class, SITENAME);
// optionally add the siteslogan if it is set
$siteslogan = value(Themes::class, SITESLOGAN);
if (null !== $siteslogan) {
$result = $result.SP."-".SP.$siteslogan;
}
// handle errors and pages
$title = null;
if ((ErrorHandler::class === Handlers::getActive()) ||
(PageHandler::class === Handlers::getActive())) {
// get the first entry of the content entries
if (0 < count(value(Main::class, CONTENT))) {
$title = value(value(Main::class, CONTENT)[0], TITLE);
if (null !== $title) {
$result = $title.SP."|".SP.$result;
}
}
}
if (null === $title) {
// optionally add the pagename if it is set
$pagename = value(Themes::class, PAGENAME);
if (null !== $pagename) {
$result = $pagename.SP."|".SP.$result;
}
}
}
return $result;
}));
}
protected static function getDefaultAttribute($attribute, $filter = null) {
$result = null;
$metadata = value(Main::class, METADATA);
if ($metadata instanceof Content) {
switch (Handlers::getActive()) {
case CategoryHandler::class:
callcontent(strtolower(value($metadata, CATEGORY)), false, true,
function ($content) use ($attribute, &$result) {
if ((null === $result) && (null !== value($content, $attribute))) {
$result = value($content, $attribute);
}
return null;
});
break;
case FM4FHandler::class:
case PageHandler::class:
$content = preparecontent(value(Main::class, CONTENT), null, [CATEGORY]);
if (null !== $content) {
$category = static::getFirstCategory(value($content[0], CATEGORY));
if (null !== $category) {
callcontent(strtolower($category), false, true,
function ($content) use ($attribute, &$result) {
if ((null === $result) && (null !== value($content, $attribute))) {
$result = value($content, $attribute);
}
return null;
});
}
} else {
if (null !== value(value(Main::class, CONTENT)[0], $attribute)) {
$result = value(value(Main::class, CONTENT)[0], $attribute);
}
}
break;
}
}
// let the caller decide what happens with the result
if (is_callable($filter)) {
$result = $filter($result);
}
return $result;
}
protected static function getDefaultCanonical() {
$result = null;
// do not set a canonical URI on error
if (ErrorHandler::class !== Handlers::getActive()) {
$result = value(Main::class, URI);
}
return $result;
}
protected static function getDefaultCharset() {
return strtolower(value(Main::class, CHARSET));
}
protected static function getDefaultCopyright() {
return "Copyright ©".SP.value(Themes::class, SITENAME).SP.date("Y");
}
protected static function getDefaultLanguage() {
$result = strtolower(value(Main::class, LANGUAGE));
// only take the first part if the language is of the form "ab_xy"
if (1 === preg_match("~^([a-z]+)\_[a-z]+$~", $result, $matches)) {
if (2 === count($matches)) {
$result = $matches[1];
}
}
return $result;
}
protected static function getDefaultPagename() {
$result = null;
// convert the METADATA to a pagename
$metadata = value(Main::class, METADATA);
if ($metadata instanceof Content) {
switch (Handlers::getActive()) {
case ArchiveHandler::class:
if ((null !== value($metadata, ArchiveHandler::DAY)) ||
(null !== value($metadata, ArchiveHandler::MONTH)) ||
(null !== value($metadata, ArchiveHandler::YEAR))) {
$result = t("Archiv", FM4FTheme::class).COL.SP;
$parts = [];
if (null !== value($metadata, ArchiveHandler::DAY)) {
$parts[] .= t("Tag", FM4FTheme::class).SP.value($metadata, ArchiveHandler::DAY);
}
if (null !== value($metadata, ArchiveHandler::MONTH)) {
$parts[] .= t("Monat", FM4FTheme::class).SP.value($metadata, ArchiveHandler::MONTH);
}
if (null !== value($metadata, ArchiveHandler::YEAR)) {
$parts[] .= t("Jahr", FM4FTheme::class).SP.value($metadata, ArchiveHandler::YEAR);
}
$result .= implode(DP.SP, $parts);
}
break;
case AuthorHandler::class:
$result = t("Autor", FM4FTheme::class).COL.SP.ucfirst(value($metadata, AUTHOR));
break;
case CategoryHandler::class:
callcontent(strtolower(value($metadata, CATEGORY)), false, true,
function ($content) use (&$result) {
if (null === $result) {
$result = value($content, PAGENAME);
}
return null;
});
if (null === $result) {
$result = t("Kategorie", FM4FTheme::class).COL.SP.ucwords((str_replace("_", " ", value($metadata, CATEGORY))));
}
break;
case FM4FHandler::class:
case PageHandler::class:
$content = preparecontent(value(Main::class, CONTENT), null, [CATEGORY]);
if (null !== $content) {
$category = static::getFirstCategory(value($content[0], CATEGORY));
if (null !== $category) {
callcontent(strtolower($category), false, true,
function ($content) use (&$result) {
if (null === $result) {
$result = value($content, PAGENAME);
}
return null;
});
if (null === $result) {
$result = t("Kategorie", FM4FTheme::class).COL.SP.ucwords((str_replace("_", " ", $category)));
}
}
} else {
$result = value(value(Main::class, CONTENT)[0], PAGENAME);
}
break;
case SearchHandler::class:
$result = t("Suche", FM4FTheme::class).COL.SP.strtr(value($metadata, SearchHandler::SEARCH), DOT, SP);
break;
}
}
return $result;
}
protected static function getFirstCategory($category) {
$result = null;
$category = explode(SP, $category);
foreach ($category as $category_item) {
// make sure that only valid characters are contained
if (1 === preg_match("~^[0-9A-Za-z\_\-]+$~", $category_item)) {
$result = $category_item;
break;
}
}
return $result;
}
protected static function handlePageSections() {
// only check if we show a single page or the index
if ((FM4FHandler::class === Handlers::getActive()) ||
(PageHandler::class === Handlers::getActive())) {
// extract the potential folder name
$filename = value(value(Main::class, CONTENT)[0], FilePlugin::FILE);
if ((0 === strpos($filename, FilePlugin::getPath())) &&
((strlen($filename)-strlen(FilePlugin::EXTENSION)) === strrpos($filename, FilePlugin::EXTENSION))) {
$filename = substr($filename, strlen(FilePlugin::getPath()), -strlen(FilePlugin::EXTENSION));
// retrieve the sections
$content = callcontent($filename, true, false,
function ($content) {
// ignore files where "section" is not set to true
if (istrue(value($content, "section"))) {
return $content;
} else {
return null;
}
});
// if there is something left
if (null !== $content) {
// make sure that we set an array
if ($content instanceof Content) {
$content = [$content];
}
// set the sections as the new content
Main::set(CONTENT, $content);
}
}
}
}
// RUNTIME FUNCTIONS
public static function theme() {
$result = false;
// we do not handle empty content
$content = preparecontent(value(Main::class, CONTENT));
if (null !== $content) {
// make sure that we only handle arrays
if ($content instanceof Content) {
Main::set(CONTENT, [$content]);
}
// preset theme configuration
static::configureTheme();
// read page sections if they are available
static::handlePageSections();
// generate the head output
Plugins::run(BEFORE_HEAD);
require_once(__DIR__.DS."head.php");
Plugins::run(AFTER_HEAD);
// generate the body output
Plugins::run(BEFORE_BODY);
require_once(__DIR__.DS."body.php");
Plugins::run(AFTER_BODY);
// generate the footer output
Plugins::run(BEFORE_FOOTER);
require_once(__DIR__.DS."footer.php");
Plugins::run(AFTER_FOOTER);
// we handled this page
$result = true;
}
return $result;
}
}
// register theme
Themes::register(FM4FTheme::class, "theme", FM4FTheme::class);
// register translation
Translate::register(__DIR__.DS."lang".DS, FM4FTheme::class);