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misc.js
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misc.js
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/*******************/
/* INJECT TRIGGERS */
/*******************/
GW.elementInjectTriggers = { };
GW.defunctElementInjectTriggers = { };
/****************************************************************************/
/* Register element inject trigger for the given uuid. (In other words, when
element with `data-uuid` attribute with value equal to the given uuid is
injected into the document, run the given function on the element.)
Returns the uuid.
(If null is passed for the uuid, one will be generated automatically.)
Each entry thus added triggers only once per uuid, then deletes itself.
*/
function onInject(uuid, f) {
uuid = uuid ?? crypto.randomUUID();
GW.elementInjectTriggers[uuid] = f;
return uuid;
}
/***********************************************************************/
/* Watch for element injections in the given document. Process injected
elements through registered inject triggers.
*/
function observeInjectedElementsInDocument(doc) {
let observer = new MutationObserver((mutationsList, observer) => {
if (Object.entries(GW.elementInjectTriggers).length == 0)
return;
let doTrigger = (element, f) => {
GW.defunctElementInjectTriggers[element.dataset.uuid] = f;
delete GW.elementInjectTriggers[element.dataset.uuid];
f(element);
};
for (mutationRecord of mutationsList) {
for (let [ uuid, f ] of Object.entries(GW.elementInjectTriggers)) {
for (node of mutationRecord.addedNodes) {
if (node instanceof HTMLElement) {
if (node.dataset.uuid == uuid) {
doTrigger(node, f);
break;
} else {
let nestedNode = node.querySelector(`[data-uuid='${uuid}']`);
if (nestedNode) {
doTrigger(nestedNode, f);
break;
}
}
}
}
}
}
});
observer.observe(doc, { subtree: true, childList: true });
}
observeInjectedElementsInDocument(document);
/******************************************************************************/
/* Returns a placeholder element that, when injected, replaces itself with the
return value of the provided replacement function (to which the placeholder
is passed).
If an optional wrapper function is given, replacement is done within an
anonymous closure which is passed to the wrapper function. (This can be
used to, e.g., delay replacement, by passing a suitable doWhen function
as the wrapper.)
*/
function placeholder(replaceFunction, wrapperFunction) {
let transform = wrapperFunction
? (element) => { wrapperFunction(() => { element.replaceWith(replaceFunction(element)); }); }
: (element) => { element.replaceWith(replaceFunction(element)); }
let uuid = onInject(null, transform);
return `<span class="placeholder" data-uuid="${uuid}"></span>`;
}
/*****************************************************************************/
/* Generate new UUIDs for any placeholder elements in the given container.
(Necessary when using a DocumentFragment to make a copy of a subtree;
otherwise - since inject triggers are deleted after triggering once -
any placeholders in the copied subtree will never get replaced.)
*/
function regeneratePlaceholderIds(container) {
container.querySelectorAll(".placeholder").forEach(placeholder => {
placeholder.dataset.uuid = onInject(null, ( GW.elementInjectTriggers[placeholder.dataset.uuid]
?? GW.defunctElementInjectTriggers[placeholder.dataset.uuid]));
});
}
/**********/
/* ASSETS */
/**********/
doAjax({
location: versionedAssetURL("/static/img/icon/icons.svg"),
onSuccess: (event) => {
GW.svgIconFile = newDocument(event.target.response);
GW.notificationCenter.fireEvent("GW.SVGIconsLoaded");
}
});
function doWhenSVGIconsLoaded(f) {
if (GW.svgIconFile != null)
f();
else
GW.notificationCenter.addHandlerForEvent("GW.SVGIconsLoaded", (info) => {
f();
}, { once: true });
}
GW.svg = (icon) => {
if (GW.svgIconFile == null)
return placeholder(element => elementFromHTML(GW.svg(icon)), doWhenSVGIconsLoaded);
let iconView = GW.svgIconFile.querySelector(`#${icon}`);
if (iconView == null)
return null;
let viewBox = iconView.getAttribute("viewBox").split(" ").map(x => parseFloat(x));
let g = iconView.nextElementSibling;
let xOffset = parseFloat(g.getAttribute("transform").match(/translate\((.+?), .+\)/)[1]);
viewBox[0] -= xOffset;
viewBox = viewBox.join(" ");
return ( `<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="${viewBox}">`
+ g.innerHTML
+ `</svg>`);
};
/******************/
/* ASSET VERSIONS */
/******************/
GW.assetVersions = (GW.assetVersions ?? { });
/*****************************************************************************/
/* Return fully qualified, versioned (if possible) URL for asset at the given
path.
*/
function versionedAssetURL(pathname) {
let version = GW.assetVersions[pathname];
let versionString = (version ? `?v=${version}` : ``);
return URLFromString(pathname + versionString);
}
/*****************************************************************************/
/* Return a random alternate asset pathname (not versioned), given a pathname
with ‘%R’ where a number should be, e.g.:
/static/img/logo/christmas/light/logo-christmas-light-%R-small-1x.png
will return
/static/img/logo/christmas/light/logo-christmas-light-1-small-1x.png
(or -2, -3, etc., selecting randomly from available numbered alternates).
Alternatively, a valid regular expression pattern (in string form, not a
RegExp object) may be provided.
Specified assets must be listed in the versioned asset database.
*/
function randomAsset(assetPathnamePattern) {
let assetPathnameRegExp = new RegExp(assetPathnamePattern.replace("%R", "[0-9]+"));
let alternateAssetPathnames = [ ];
for (versionedAssetPathname of Object.keys(GW.assetVersions)) {
if (assetPathnameRegExp.test(versionedAssetPathname))
alternateAssetPathnames.push(versionedAssetPathname);
}
return (alternateAssetPathnames[rollDie(alternateAssetPathnames.length) - 1] ?? null);
}
/*******************/
/* IMAGE INVERSION */
/*******************/
GW.invertOrNot = { };
GW.invertOrNotAPIEndpoint = "https://invertornot.com/api/url";
/*******************************************************************/
/* Returns true if the given image should be inverted in dark mode.
*/
function shouldInvertImageInDarkMode(image) {
return (GW.invertOrNot[image.src].invert == true);
}
/*****************************************************************************/
/* Sends request to InvertOrNot for judgments about whether the images in the
given container ought to be inverted.
*/
function requestImageInversionDataForImagesInContainer(container) {
let imageURLs = Array.from(container.querySelectorAll("figure img")).map(image =>
( URLFromString(image.src).pathname.match(/\.(png|jpe?g$)/i)
&& GW.invertOrNot[image.src] == null)
? image.src
: null
).filter(x => x);
if (imageURLs.length == 0)
return;
doAjax({
location: GW.invertOrNotAPIEndpoint,
method: "POST",
serialization: "JSON",
responseType: "json",
params: imageURLs,
onSuccess: (event) => {
event.target.response.forEach(imageInfo => {
GW.invertOrNot[imageInfo.url] = {
invert: (imageInfo.invert == 1)
};
});
},
onFailure: (event) => {
console.log(event);
}
});
}
/**********/
/* IMAGES */
/**********/
Images = {
thumbnailBasePath: "/metadata/thumbnail/",
thumbnailDefaultSize: "256",
thumbnailSizeFromURL: (url) => {
if (typeof url == "string")
url = URLFromString(url);
return parseInt(url.pathname.slice(Images.thumbnailBasePath.length).split("/")[0]);
},
thumbnailURLForImageURL: (imageSrcURL, size = Images.thumbnailDefaultSize) => {
if (imageSrcURL.hostname != location.hostname)
return null;
return URLFromString( Images.thumbnailBasePath
+ size + "px/"
+ fixedEncodeURIComponent(fixedEncodeURIComponent(imageSrcURL.pathname)));
},
thumbnailURLForImage: (image, size = Images.thumbnailDefaultSize) => {
return Images.thumbnailURLForImageURL(URLFromString(image.src));
},
thumbnailifyImage: (image) => {
let thumbnailURL = Images.thumbnailURLForImage(image);
if (thumbnailURL) {
image.dataset.srcSizeFull = image.src;
image.src = thumbnailURL.href;
}
},
isThumbnail: (image) => {
return (image.dataset.srcSizeFull > "");
},
unthumbnailifyImage: (image) => {
if (Images.isThumbnail(image)) {
image.src = image.dataset.srcSizeFull;
delete image.dataset.srcSizeFull;
}
}
};
/*********/
/* LINKS */
/*********/
/******************************************************************************/
/* Returns true if the link is an annotated link, OR if it is an include-link
which transclude.js treats as an annotation transclude. (This is relevant
because in either case, the link hash should be ignored, when deciding what
to do with a link on the basis of it having or not having a link hash.)
*/
function isAnnotationLink(link) {
return (Annotations.isAnnotatedLinkFull(link) || Transclude.isAnnotationTransclude(link));
}
/****************************************************************************/
/* Return the element, in the target document, pointed to by the hash of the
given link (which may be a URL object or an HTMLAnchorElement).
*/
function targetElementInDocument(link, doc) {
if (isAnchorLink(link) == false)
return null;
let anchor = anchorsForLink(link)[0];
let element = null;
if (anchor.startsWith("#"))
element = doc.querySelector(selectorFromHash(anchor));
if ( element == null
&& link instanceof HTMLAnchorElement
&& link.dataset.backlinkTargetUrl > "") {
// HAX. (Remove when link IDs are fixed. —SA 2023-03-22)
/* Disabling this hack, hopefully it’s no longer needed.
(See also line below.) —SA 2023-04-29
*/
// let exactBacklinkSelector = null;
// if (anchor.startsWith("#gwern")) {
// let targetID = "#" + anchor.slice(("#gwern" + link.dataset.backlinkTargetUrl.slice(1).replace("/", "-") + "-").length);
// if (targetID > "")
// exactBacklinkSelector = `a[href*='${CSS.escape(link.dataset.backlinkTargetUrl + targetID)}']`;
// }
let backlinkSelector = `a[href*='${CSS.escape(link.dataset.backlinkTargetUrl)}']:not(.backlink-not)`;
let exclusionSelector = [
"#page-metadata a",
".aux-links-list a"
].join(", ");
/* Disabling this hack, hopefully it’s no longer needed.
(See also lines above.) —SA 2023-04-29
*/
element = /* doc.querySelector(exactBacklinkSelector) ?? */ (Array.from(doc.querySelectorAll(backlinkSelector)).filter(backlink => {
return ( (link.dataset.backlinkTargetUrl.startsWith("/")
? backlink.pathname == link.dataset.backlinkTargetUrl
: backlink.href == link.dataset.backlinkTargetUrl)
&& backlink.closest(exclusionSelector) == null);
}).first);
}
return element;
}
/*****************************************************************************/
/* Returns true if the given link (a URL or an HTMLAnchorElement) points to a
specific element within a page, rather than to a whole page. (This is
usually because the link has a URL hash, but may also be because the link
is a backlink, in which case it implicitly points to that link in the
target page which points back at the target page for the backlink; or it
may be because the link is a link with a value for the `data-target-id`
or `data-backlink-target-url` attributes.)
*/
function isAnchorLink(link) {
return (anchorsForLink(link).length == 1);
}
/***********************************************/
/* Removes all anchor data from the given link.
*/
function stripAnchorsFromLink(link) {
if (link instanceof HTMLAnchorElement) {
link.removeAttribute("data-target-id");
link.removeAttribute("data-backlink-target-url");
}
link.hash = "";
}
/****************************************************************************/
/* Returns an array of anchors for the given link. This array may have zero,
one, or two elements.
*/
function anchorsForLink(link) {
if (link instanceof HTMLAnchorElement) {
if (link.dataset.targetId > "") {
return link.dataset.targetId.split(" ").map(x => `#${x}`);
} else if ( isAnnotationLink(link) == false
&& link.hash > "") {
return link.hash.match(/#[^#]*/g);
} else if ( isAnnotationLink(link) == false
&& link.dataset.backlinkTargetUrl > "") {
return [ link.dataset.backlinkTargetUrl ];
} else {
return [ ];
}
} else {
return link.hash.match(/#[^#]*/g) ?? [ ];
}
}
/************/
/* SECTIONS */
/************/
/******************************************************************************/
/* Returns the heading level of a <section> element. (Given by a class of the
form ‘levelX’ where X is a positive integer. Defaults to 1 if no such class
is present.)
*/
function sectionLevel(section) {
if ( !section
|| section.tagName != "SECTION")
return null;
// Note: ‘m’ is a regexp matches array.
let m = Array.from(section.classList).map(c => c.match(/^level([0-9]*)$/)).find(m => m);
return (m ? parseInt(m[1]) : 1);
}
/*************/
/* CLIPBOARD */
/*************/
/*******************************************/
/* Copy the provided text to the clipboard.
*/
function copyTextToClipboard(text) {
let scratchpad = document.querySelector("#scratchpad");
// Perform copy operation.
scratchpad.innerText = text;
selectElementContents(scratchpad);
document.execCommand("copy");
scratchpad.innerText = "";
}
/***************************************************/
/* Create scratchpad for synthetic copy operations.
*/
doWhenDOMContentLoaded(() => {
document.body.append(newElement("SPAN", { "id": "scratchpad" }));
});
/*****************************************************************************/
/* Adds the given copy processor, appending it to the existing array thereof.
Each copy processor should take two arguments: the copy event, and the
DocumentFragment which holds the selection as it is being processed by each
successive copy processor.
A copy processor should return true if processing should continue after it’s
done, false otherwise (e.g. if it has entirely replaced the contents of the
selection object with what the final clipboard contents should be).
*/
function addCopyProcessor(processor) {
if (GW.copyProcessors == null)
GW.copyProcessors = [ ];
GW.copyProcessors.push(processor);
}
/******************************************************************************/
/* Set up the copy processor system by registering a ‘copy’ event handler to
call copy processors. (Must be set up for the main document, and separately
for any shadow roots.)
*/
function registerCopyProcessorsForDocument(doc) {
GWLog("registerCopyProcessorsForDocument", "rewrite.js", 1);
doc.addEventListener("copy", (event) => {
if ( GW.copyProcessors == null
|| GW.copyProcessors.length == 0)
return;
event.preventDefault();
event.stopPropagation();
let selection = getSelectionAsDocument(doc);
let i = 0;
while ( i < GW.copyProcessors.length
&& GW.copyProcessors[i++](event, selection));
event.clipboardData.setData("text/plain", selection.textContent);
event.clipboardData.setData("text/html", selection.innerHTML);
});
}
/*************/
/* AUX-LINKS */
/*************/
AuxLinks = {
auxLinksLinkTypes: {
"/metadata/annotation/backlink/": "backlinks",
"/metadata/annotation/similar/": "similars",
"/metadata/annotation/link-bibliography/": "link-bibliography"
},
auxLinksLinkType: (link) => {
for (let [ pathnamePrefix, linkType ] of Object.entries(AuxLinks.auxLinksLinkTypes))
if (link.pathname.startsWith(pathnamePrefix))
return linkType;
return null;
},
/* Page or document for whom the aux-links are.
*/
targetOfAuxLinksLink: (link) => {
for (let [ pathnamePrefix, linkType ] of Object.entries(AuxLinks.auxLinksLinkTypes)) {
if (link.pathname.startsWith(pathnamePrefix)) {
if (link.pathname.endsWith(".html")) {
let start = pathnamePrefix.length;
let end = (link.pathname.length - ".html".length);
return decodeURIComponent(decodeURIComponent(link.pathname.slice(start, end)));
} else {
let start = (pathnamePrefix.length - 1);
return link.pathname.slice(start);
}
}
}
return null;
}
};
/*********/
/* NOTES */
/*********/
Notes = {
/* Get the (side|foot)note number from the URL hash (which might point to a
footnote, a sidenote, or a citation).
*/
noteNumberFromHash: (hash = location.hash) => {
if (hash.startsWith("#") == false)
hash = "#" + hash;
if (hash.match(/#[sf]n[0-9]/))
return hash.substr(3);
else if (hash.match(/#fnref[0-9]/))
return hash.substr(6);
else
return "";
},
noteNumber: (element) => {
return Notes.noteNumberFromHash(element.hash ?? element.id);
},
citationSelectorMatching: (element) => {
return ("#" + Notes.idForCitationNumber(Notes.noteNumberFromHash(element.hash)));
},
footnoteSelectorMatching: (element) => {
return ("#" + Notes.idForFootnoteNumber(Notes.noteNumberFromHash(element.hash)));
},
sidenoteSelectorMatching: (element) => {
return ("#" + Notes.idForSidenoteNumber(Notes.noteNumberFromHash(element.hash)));
},
idForCitationNumber: (number) => {
return `fnref${number}`;
},
idForFootnoteNumber: (number) => {
return `fn${number}`;
},
idForSidenoteNumber: (number) => {
return `sn${number}`;
},
setCitationNumber: (citation, number) => {
// #fnN
citation.hash = citation.hash.slice(0, 3) + number;
// fnrefN
citation.id = citation.id.slice(0, 5) + number;
// Link text.
citation.firstElementChild.textContent = number;
},
setFootnoteNumber: (footnote, number) => {
// fnN
footnote.id = footnote.id.slice(0, 2) + number;
// #fnrefN
let footnoteBackLink = footnote.querySelector("a.footnote-back");
if (footnoteBackLink) {
footnoteBackLink.hash = footnoteBackLink.hash.slice(0, 6) + number;
}
// #fnN
let footnoteSelfLink = footnote.querySelector("a.footnote-self-link");
if (footnoteSelfLink) {
footnoteSelfLink.hash = footnoteSelfLink.hash.slice(0, 3) + number;
footnoteSelfLink.title = "Link to footnote " + number;
}
// Footnote backlinks.
let backlinksListLabelLink = footnote.querySelector(".section-backlinks .backlinks-list-label a");
if (backlinksListLabelLink) {
// #fnN
backlinksListLabelLink.hash = backlinksListLabelLink.hash.slice(0, 3) + number;
// N
backlinksListLabelLink.querySelector("span.footnote-number").innerText = number;
}
},
/**************************************************************************/
/* Return all {side|foot}note elements associated with the given citation.
*/
allNotesForCitation: (citation) => {
if (!citation.classList.contains("footnote-ref"))
return null;
let citationNumber = Notes.noteNumber(citation);
let selector = `#fn${citationNumber}, #sn${citationNumber}`;
let allNotes = Array.from(document.querySelectorAll(selector)
).concat(Array.from(citation.getRootNode().querySelectorAll(selector))
).concat(Extracts.popFrameProvider.allSpawnedPopFrames().flatMap(popFrame =>
Array.from(popFrame.document.querySelectorAll(selector)))
).unique();
/* We must check to ensure that the note in question is from the same
page as the citation (to distinguish between main document and any
full-page embeds that may be spawned).
*/
return allNotes.filter(note => (note.querySelector(".footnote-back")?.pathname == citation.pathname));
}
};
/****************/
/* MARGIN NOTES */
/****************/
GW.marginNotes = {
// Don’t show margin notes block if there are fewer notes than this.
minimumAggregatedNotesCount: 3,
aggregationNeededInDocuments: [ ]
};
/****************************************************************************/
/* Aggregate margin notes, on the next animation frame, if not already done.
*/
function aggregateMarginNotesIfNeededInDocument(doc) {
if (GW.marginNotes.aggregationNeededInDocuments.includes(doc) == false)
GW.marginNotes.aggregationNeededInDocuments.push(doc);
requestAnimationFrame(() => {
if (GW.marginNotes.aggregationNeededInDocuments.includes(doc) == false)
return;
GW.marginNotes.aggregationNeededInDocuments.remove(doc);
aggregateMarginNotesInDocument(doc);
});
}
/**************************/
/* Aggregate margin notes.
*/
function aggregateMarginNotesInDocument(doc) {
GWLog("aggregateMarginNotesInDocument", "misc.js", 2);
let marginNotesBlockClass = "margin-notes-block";
doc.querySelectorAll(".marginnote").forEach(marginNote => {
if (marginNote.textContent.trim() == "☞")
return;
let section = marginNote.closest("section, .markdownBody, .annotation-abstract");
if (section == null)
return;
let marginNotesBlock = section.querySelector(`#${(CSS.escape(section.id))}-${marginNotesBlockClass}`);
if (marginNotesBlock == null) {
/* Construct the margin notes block. It should go after any
abstract and/or epigraph that opens the section.
*/
let firstBlock = firstBlockOf(section, {
alsoSkipElements: [
".abstract blockquote",
".epigraph",
"p.data-field"
]
}, true);
let marginNoteBlockContainerElementsSelector = [
"section",
".markdownBody",
".abstract-collapse:not(.abstract)",
".collapse-content-wrapper",
".annotation-abstract"
].join(", ");
while (firstBlock.parentElement.matches(marginNoteBlockContainerElementsSelector) == false)
firstBlock = firstBlock.parentElement;
// Inject the margin notes block.
marginNotesBlock = newElement("P", {
class: marginNotesBlockClass,
id: `${section.id}-${marginNotesBlockClass}`
});
firstBlock.parentElement.insertBefore(marginNotesBlock, firstBlock);
}
// Clone the note.
let clonedNote = marginNote.cloneNode(true);
// Set margin note type class.
clonedNote.swapClasses([ "inline", "sidenote" ], 0);
// Unwrap the inner wrapper (unneeded here).
unwrap(clonedNote.querySelector(".marginnote-inner-wrapper"));
// Remove dropcap, if any.
resetDropcapInBlock(clonedNote);
// Trim whitespace.
clonedNote.innerHTML = clonedNote.innerHTML.trim();
// Strip brackets.
/* Reason: we use brackets for editorial insertions & commentary,
particularly in annotations where the reader assumes the text is
written by the original authors.
Sometimes in long annotations where we wish to add ‘sections’
(because the original didn’t have them or they were inappropriate,
eg. long journalistic essays where the material is scattered rather
than organized by topic as necessary for a convenient annotation),
we use margin-notes as a substitute for original sections.
Such editorializing of course must be marked by brackets to avoid
misleading the reader; but then, when aggregated at the beginning
of the annotation like all margin notes, it looks bad:
‘[Foo] · [Bar] · [Baz] · [Quux]’.
So, although it risks misleading readers who do not read down
to the actual margin-note usage & see that it’s an editorial
insertion, we remove the brackets when aggregated.
(If it is necessary to override this feature & force brackets
displayed in aggregates - perhaps because the margin-note is some
exotic chemical name that starts with a bracket - one can use
alternate Unicode bracket-pairs, or possibly some sort of
non-printing non-whitespace character to block the match.
Although, since the match requires the text to both start *and* end
with a bracket, this should be an extremely rare edge-case not
worth thinking about further.)
*/
if ( clonedNote.textContent.startsWith("[")
&& clonedNote.textContent.endsWith("]")) {
clonedNote.firstTextNode.nodeValue = clonedNote.firstTextNode.nodeValue.slice(1);
clonedNote.lastTextNode.nodeValue = clonedNote.lastTextNode.nodeValue.slice(0, -1);
}
// Strip trailing period.
if (clonedNote.textContent.endsWith("."))
clonedNote.lastTextNode.nodeValue = clonedNote.lastTextNode.nodeValue.slice(0, -1);
// Prevent duplication.
if (Array.from(marginNotesBlock.children).findIndex(child => {
return clonedNote.textContent == child.textContent;
}) != -1)
return;
// Append.
marginNotesBlock.append(clonedNote);
// Process the new entries to activate pop-frame spawning.
Extracts.addTargetsWithin(marginNotesBlock);
});
// Update visibility of margin note blocks.
doc.querySelectorAll(`.${marginNotesBlockClass}`).forEach(marginNotesBlock => {
marginNotesBlock.classList.toggle("hidden", marginNotesBlock.children.length < GW.marginNotes.minimumAggregatedNotesCount);
});
}
/***************************************************************************/
/* Child nodes of a paragraph, excluding any margin notes in sidenote mode.
*/
function nodesOfGraf(graf) {
return Array.from(graf.childNodes).filter(node => ((node instanceof Element && node.matches(".marginnote.sidenote")) == false));
}
/*****************************************************************************/
/* Text content of a paragraph, excluding the contents of any margin notes in
sidenote mode.
*/
function textContentOfGraf(graf) {
return nodesOfGraf(graf).map(node => node.textContent).join("");
}
/******************************************************************************/
/* First text node of a paragraph, skipping any margin notes in sidenote mode.
*/
function firstTextNodeOfGraf(graf) {
return nodesOfGraf(graf).first.firstTextNode;
}
/*********************/
/* TABLE OF CONTENTS */
/*********************/
GW.TOC = {
containersToUpdate: [ ]
};
/*********************************************************************/
/* Update page TOC, on the next animation frame, if not already done.
*/
function updatePageTOCIfNeeded(container = document) {
if (container == document) {
GW.TOC.containersToUpdate = [ document ];
} else if (GW.TOC.containersToUpdate.includes(container) == false) {
GW.TOC.containersToUpdate.push(container);
}
requestAnimationFrame(() => {
while (GW.TOC.containersToUpdate.length > 0)
updatePageTOC(GW.TOC.containersToUpdate.shift());
});
}
/*****************************************************************************/
/* Updates the page TOC with any sections in the page that don’t already have
TOC entries.
*/
// Called by: updateMainPageTOC (rewrite.js)
// Called by: includeContent (transclude.js)
function updatePageTOC(container = document) {
GWLog("updatePageTOC", "misc.js", 2);
let TOC = document.querySelector("#TOC");
if (!TOC)
return;
// Don’t nest TOC entries any deeper than this.
let maxNestingDepth = 4;
// Collect new entries, for later processing (if need be).
let newEntries = [ ];
container.querySelectorAll("#markdownBody section").forEach(section => {
// If this section already has a TOC entry, return.
if (TOC.querySelector(`a[href$='#${(CSS.escape(fixedEncodeURIComponent(section.id)))}']`) != null)
return;
// If this section is too deeply nested, do not add it.
if (sectionLevel(section) > maxNestingDepth)
return;
/* Find where to insert the new TOC entry.
Any already-existing <section> should have a TOC entry.
(Unless the TOC entry has been removed or is missing for some reason,
in which case use the entry for the section after that, and so on.)
*/
let parentSection = section.parentElement.closest("section") ?? document.querySelector("#markdownBody");
let parentTOCElement = parentSection.id == "markdownBody"
? TOC
: TOC.querySelector(`#toc-${(CSS.escape(parentSection.id))}`).closest("li");
let nextSection = null;
let nextSectionTOCLink = null;
let followingSections = childBlocksOf(parentSection).filter(child =>
child.tagName == "SECTION"
&& child.compareDocumentPosition(section) == Node.DOCUMENT_POSITION_PRECEDING
);
do {
nextSection = followingSections.shift();
nextSectionTOCLink = nextSection
? parentTOCElement.querySelector(`#toc-${(CSS.escape(nextSection.id))}`)
: null;
} while ( nextSection
&& nextSectionTOCLink == null);
let followingTOCElement = nextSectionTOCLink
? nextSectionTOCLink.closest("li")
: null;
// Construct entry.
let entry = newElement("LI");
let entryText = section.id == "footnotes"
? "Footnotes"
: section.firstElementChild.querySelector("a").innerHTML;
entry.innerHTML = `<a
class='link-self decorate-not'
id='toc-${section.id}'
href='#${fixedEncodeURIComponent(section.id)}'
>${entryText}</a>`;
// Get or construct the <ul> element.
let subList = ( Array.from(parentTOCElement.childNodes).find(child => child.tagName == "UL")
?? parentTOCElement.appendChild(newElement("UL")));
// Insert and store.
subList.insertBefore(entry, followingTOCElement);
newEntries.push(entry);
});
// Process the new entries to activate pop-frame spawning.
newEntries.forEach(Extracts.addTargetsWithin);
// Rectify typography in new entries.
newEntries.forEach(entry => {
Typography.processElement(entry, Typography.replacementTypes.WORDBREAKS);
});
// Update visibility.
updateTOCVisibility(TOC);
}
/*************/
/* FOOTNOTES */
/*************/
/*****************************************************************************/
/* Mark hash-targeted footnote with ‘targeted’ class.
*/
function updateFootnoteTargeting() {
GWLog("updateFootnoteTargeting", "rewrite.js", 1);
if ( Sidenotes
&& Sidenotes.mediaQueries.viewportWidthBreakpoint.matches)
return;
// Clear any existing targeting.
let targetedElementSelector = [
".footnote-ref",
".footnote"
].map(x => x + ".targeted").join(", ");
document.querySelectorAll(targetedElementSelector).forEach(element => {
element.classList.remove("targeted");
});
// Identify and mark target footnote.
let target = location.hash.match(/^#(fn|fnref)[0-9]+$/)
? getHashTargetedElement()
: null;
if (target)
target.classList.add("targeted");
}
/*************/
/* DROPCAPS */
/*************/
GW.dropcaps = {
dropcapBlockSelector: "p[class*='dropcap-']:not(.dropcap-not)",
graphicalDropcapTypes: [
"dropcat",
"gene-wolfe",
"ninit"
]
};
/***************************************************************************/
/* Returns URL of a random graphical dropcap of the given type and letter,
appropriate for the current mode and the viewport’s device pixel ratio.
*/
function randomDropcapURL(dropcapType, letter) {
let mode = DarkMode.computedMode();
let scale = valMinMax(Math.ceil(window.devicePixelRatio), 1, 2);
let dropcapPathname = randomAsset(`/static/font/dropcap/${dropcapType}/(${mode}/)?${letter.toUpperCase()}(-.+)?-[0-9]+(\\.svg|-small-${scale}x\\.png)$`);
if (dropcapPathname == null)
return null;
return versionedAssetURL(dropcapPathname);
}
/*****************************************************************************/
/* Reset dropcap in the given block to initial state (as it was prior to the
handlers in this section being run, i.e. not implemented, only marked for
implementation).
This function is also used to strip dropcaps from blocks that shouldn’t
have them in the first place.
*/
function resetDropcapInBlock(block) {
let dropcapLink = block.querySelector(".link-dropcap");
if (dropcapLink == null)
return;
unwrap(dropcapLink);
// If this is a graphical dropcap block...
let dropcapImage = block.querySelector("img.dropcap");
if (dropcapImage) {
// Remove mode change handler.
GW.notificationCenter.removeHandlerForEvent(dropcapImage.modeChangeHandler, "DarkMode.computedModeDidChange");
// Remove graphical dropcap.
dropcapImage.remove();
}