diff --git a/static/style.css b/static/style.css index 00491af..1e6c19b 100644 --- a/static/style.css +++ b/static/style.css @@ -168,3 +168,24 @@ ul.dir li .material-symbols-outlined { font-weight: bold; text-align: center; } + +@font-face { + font-family: 'Material Symbols Outlined'; + font-style: normal; + font-weight: 400; + src: url(/static/vendor/material-symbols-outlined.woff2) format('truetype'); +} + +.material-symbols-outlined { + font-family: 'Material Symbols Outlined'; + font-weight: normal; + font-style: normal; + font-size: 24px; + line-height: 1; + letter-spacing: normal; + text-transform: none; + display: inline-block; + white-space: nowrap; + word-wrap: normal; + direction: ltr; +} diff --git a/static/vendor/htmx-sse.js b/static/vendor/htmx-sse.js new file mode 100644 index 0000000..4088cd2 --- /dev/null +++ b/static/vendor/htmx-sse.js @@ -0,0 +1,322 @@ +/* +Server Sent Events Extension +============================ +This extension adds support for Server Sent Events to htmx. See /www/extensions/sse.md for usage instructions. + +*/ + +(function(){ + + /** @type {import("../htmx").HtmxInternalApi} */ + var api; + + htmx.defineExtension("sse", { + + /** + * Init saves the provided reference to the internal HTMX API. + * + * @param {import("../htmx").HtmxInternalApi} api + * @returns void + */ + init: function(apiRef) { + // store a reference to the internal API. + api = apiRef; + + // set a function in the public API for creating new EventSource objects + if (htmx.createEventSource == undefined) { + htmx.createEventSource = createEventSource; + } + }, + + /** + * onEvent handles all events passed to this extension. + * + * @param {string} name + * @param {Event} evt + * @returns void + */ + onEvent: function(name, evt) { + + switch (name) { + + // Try to remove remove an EventSource when elements are removed + case "htmx:beforeCleanupElement": + var internalData = api.getInternalData(evt.target) + if (internalData.sseEventSource) { + internalData.sseEventSource.close(); + } + return; + + // Try to create EventSources when elements are processed + case "htmx:afterProcessNode": + createEventSourceOnElement(evt.target); + } + } + }); + + /////////////////////////////////////////////// + // HELPER FUNCTIONS + /////////////////////////////////////////////// + + + /** + * createEventSource is the default method for creating new EventSource objects. + * it is hoisted into htmx.config.createEventSource to be overridden by the user, if needed. + * + * @param {string} url + * @returns EventSource + */ + function createEventSource(url) { + return new EventSource(url, {withCredentials:true}); + } + + function splitOnWhitespace(trigger) { + return trigger.trim().split(/\s+/); + } + + function getLegacySSEURL(elt) { + var legacySSEValue = api.getAttributeValue(elt, "hx-sse"); + if (legacySSEValue) { + var values = splitOnWhitespace(legacySSEValue); + for (var i = 0; i < values.length; i++) { + var value = values[i].split(/:(.+)/); + if (value[0] === "connect") { + return value[1]; + } + } + } + } + + function getLegacySSESwaps(elt) { + var legacySSEValue = api.getAttributeValue(elt, "hx-sse"); + var returnArr = []; + if (legacySSEValue) { + var values = splitOnWhitespace(legacySSEValue); + for (var i = 0; i < values.length; i++) { + var value = values[i].split(/:(.+)/); + if (value[0] === "swap") { + returnArr.push(value[1]); + } + } + } + return returnArr; + } + + /** + * createEventSourceOnElement creates a new EventSource connection on the provided element. + * If a usable EventSource already exists, then it is returned. If not, then a new EventSource + * is created and stored in the element's internalData. + * @param {HTMLElement} elt + * @param {number} retryCount + * @returns {EventSource | null} + */ + function createEventSourceOnElement(elt, retryCount) { + + if (elt == null) { + return null; + } + + var internalData = api.getInternalData(elt); + + // get URL from element's attribute + var sseURL = api.getAttributeValue(elt, "sse-connect"); + + + if (sseURL == undefined) { + var legacyURL = getLegacySSEURL(elt) + if (legacyURL) { + sseURL = legacyURL; + } else { + return null; + } + } + + // Connect to the EventSource + var source = htmx.createEventSource(sseURL); + internalData.sseEventSource = source; + + // Create event handlers + source.onerror = function (err) { + + // Log an error event + api.triggerErrorEvent(elt, "htmx:sseError", {error:err, source:source}); + + // If parent no longer exists in the document, then clean up this EventSource + if (maybeCloseSSESource(elt)) { + return; + } + + // Otherwise, try to reconnect the EventSource + if (source.readyState === EventSource.CLOSED) { + retryCount = retryCount || 0; + var timeout = Math.random() * (2 ^ retryCount) * 500; + window.setTimeout(function() { + createEventSourceOnElement(elt, Math.min(7, retryCount+1)); + }, timeout); + } + }; + + source.onopen = function (evt) { + api.triggerEvent(elt, "htmx::sseOpen", {source: source}); + } + + // Add message handlers for every `sse-swap` attribute + queryAttributeOnThisOrChildren(elt, "sse-swap").forEach(function(child) { + + var sseSwapAttr = api.getAttributeValue(child, "sse-swap"); + if (sseSwapAttr) { + var sseEventNames = sseSwapAttr.split(","); + } else { + var sseEventNames = getLegacySSESwaps(child); + } + + for (var i = 0 ; i < sseEventNames.length ; i++) { + var sseEventName = sseEventNames[i].trim(); + var listener = function(event) { + + // If the parent is missing then close SSE and remove listener + if (maybeCloseSSESource(elt)) { + source.removeEventListener(sseEventName, listener); + return; + } + + // swap the response into the DOM and trigger a notification + swap(child, event.data); + api.triggerEvent(elt, "htmx:sseMessage", event); + }; + + // Register the new listener + api.getInternalData(elt).sseEventListener = listener; + source.addEventListener(sseEventName, listener); + } + }); + + // Add message handlers for every `hx-trigger="sse:*"` attribute + queryAttributeOnThisOrChildren(elt, "hx-trigger").forEach(function(child) { + + var sseEventName = api.getAttributeValue(child, "hx-trigger"); + if (sseEventName == null) { + return; + } + + // Only process hx-triggers for events with the "sse:" prefix + if (sseEventName.slice(0, 4) != "sse:") { + return; + } + + var listener = function(event) { + + // If parent is missing, then close SSE and remove listener + if (maybeCloseSSESource(elt)) { + source.removeEventListener(sseEventName, listener); + return; + } + + // Trigger events to be handled by the rest of htmx + htmx.trigger(child, sseEventName, event); + htmx.trigger(child, "htmx:sseMessage", event); + } + + // Register the new listener + api.getInternalData(elt).sseEventListener = listener; + source.addEventListener(sseEventName.slice(4), listener); + }); + } + + /** + * maybeCloseSSESource confirms that the parent element still exists. + * If not, then any associated SSE source is closed and the function returns true. + * + * @param {HTMLElement} elt + * @returns boolean + */ + function maybeCloseSSESource(elt) { + if (!api.bodyContains(elt)) { + var source = api.getInternalData(elt).sseEventSource; + if (source != undefined) { + source.close(); + // source = null + return true; + } + } + return false; + } + + /** + * queryAttributeOnThisOrChildren returns all nodes that contain the requested attributeName, INCLUDING THE PROVIDED ROOT ELEMENT. + * + * @param {HTMLElement} elt + * @param {string} attributeName + */ + function queryAttributeOnThisOrChildren(elt, attributeName) { + + var result = []; + + // If the parent element also contains the requested attribute, then add it to the results too. + if (api.hasAttribute(elt, attributeName) || api.hasAttribute(elt, "hx-sse")) { + result.push(elt); + } + + // Search all child nodes that match the requested attribute + elt.querySelectorAll("[" + attributeName + "], [data-" + attributeName + "], [hx-sse], [data-hx-sse]").forEach(function(node) { + result.push(node); + }); + + return result; + } + + /** + * @param {HTMLElement} elt + * @param {string} content + */ + function swap(elt, content) { + + api.withExtensions(elt, function(extension) { + content = extension.transformResponse(content, null, elt); + }); + + var swapSpec = api.getSwapSpecification(elt); + var target = api.getTarget(elt); + var settleInfo = api.makeSettleInfo(elt); + + api.selectAndSwap(swapSpec.swapStyle, target, elt, content, settleInfo); + + settleInfo.elts.forEach(function (elt) { + if (elt.classList) { + elt.classList.add(htmx.config.settlingClass); + } + api.triggerEvent(elt, 'htmx:beforeSettle'); + }); + + // Handle settle tasks (with delay if requested) + if (swapSpec.settleDelay > 0) { + setTimeout(doSettle(settleInfo), swapSpec.settleDelay); + } else { + doSettle(settleInfo)(); + } + } + + /** + * doSettle mirrors much of the functionality in htmx that + * settles elements after their content has been swapped. + * TODO: this should be published by htmx, and not duplicated here + * @param {import("../htmx").HtmxSettleInfo} settleInfo + * @returns () => void + */ + function doSettle(settleInfo) { + + return function() { + settleInfo.tasks.forEach(function (task) { + task.call(); + }); + + settleInfo.elts.forEach(function (elt) { + if (elt.classList) { + elt.classList.remove(htmx.config.settlingClass); + } + api.triggerEvent(elt, 'htmx:afterSettle'); + }); + } + } + +})(); \ No newline at end of file diff --git a/static/vendor/htmx.min.js b/static/vendor/htmx.min.js new file mode 100644 index 0000000..8336a57 --- /dev/null +++ b/static/vendor/htmx.min.js @@ -0,0 +1 @@ +(function(e,t){if(typeof define==="function"&&define.amd){define([],t)}else if(typeof module==="object"&&module.exports){module.exports=t()}else{e.htmx=e.htmx||t()}})(typeof self!=="undefined"?self:this,function(){return function(){"use strict";var z={onLoad:t,process:qt,on:se,off:le,trigger:ie,ajax:hr,find:b,findAll:f,closest:d,values:function(e,t){var r=Jt(e,t||"post");return r.values},remove:F,addClass:B,removeClass:n,toggleClass:j,takeClass:V,defineExtension:xr,removeExtension:yr,logAll:X,logger:null,config:{historyEnabled:true,historyCacheSize:10,refreshOnHistoryMiss:false,defaultSwapStyle:"innerHTML",defaultSwapDelay:0,defaultSettleDelay:20,includeIndicatorStyles:true,indicatorClass:"htmx-indicator",requestClass:"htmx-request",addedClass:"htmx-added",settlingClass:"htmx-settling",swappingClass:"htmx-swapping",allowEval:true,inlineScriptNonce:"",attributesToSettle:["class","style","width","height"],withCredentials:false,timeout:0,wsReconnectDelay:"full-jitter",wsBinaryType:"blob",disableSelector:"[hx-disable], [data-hx-disable]",useTemplateFragments:false,scrollBehavior:"smooth",defaultFocusScroll:false,getCacheBusterParam:false,globalViewTransitions:false},parseInterval:v,_:e,createEventSource:function(e){return new EventSource(e,{withCredentials:true})},createWebSocket:function(e){var t=new WebSocket(e,[]);t.binaryType=z.config.wsBinaryType;return t},version:"1.9.0"};var C={addTriggerHandler:mt,bodyContains:ee,canAccessLocalStorage:D,filterValues:Qt,hasAttribute:q,getAttributeValue:J,getClosestMatch:c,getExpressionVars:ur,getHeaders:Yt,getInputValues:Jt,getInternalData:Y,getSwapSpecification:tr,getTriggerSpecs:We,getTarget:he,makeFragment:l,mergeObjects:te,makeSettleInfo:S,oobSwap:pe,selectAndSwap:Pe,settleImmediately:Ft,shouldCancel:$e,triggerEvent:ie,triggerErrorEvent:ne,withExtensions:w};var R=["get","post","put","delete","patch"];var O=R.map(function(e){return"[hx-"+e+"], [data-hx-"+e+"]"}).join(", ");function v(e){if(e==undefined){return undefined}if(e.slice(-2)=="ms"){return parseFloat(e.slice(0,-2))||undefined}if(e.slice(-1)=="s"){return parseFloat(e.slice(0,-1))*1e3||undefined}if(e.slice(-1)=="m"){return parseFloat(e.slice(0,-1))*1e3*60||undefined}return parseFloat(e)||undefined}function G(e,t){return e.getAttribute&&e.getAttribute(t)}function q(e,t){return e.hasAttribute&&(e.hasAttribute(t)||e.hasAttribute("data-"+t))}function J(e,t){return G(e,t)||G(e,"data-"+t)}function u(e){return e.parentElement}function Z(){return document}function c(e,t){while(e&&!t(e)){e=u(e)}return e?e:null}function T(e,t,r){var n=J(t,r);var i=J(t,"hx-disinherit");if(e!==t&&i&&(i==="*"||i.split(" ").indexOf(r)>=0)){return"unset"}else{return n}}function $(t,r){var n=null;c(t,function(e){return n=T(t,e,r)});if(n!=="unset"){return n}}function h(e,t){var r=e.matches||e.matchesSelector||e.msMatchesSelector||e.mozMatchesSelector||e.webkitMatchesSelector||e.oMatchesSelector;return r&&r.call(e,t)}function H(e){var t=/<([a-z][^\/\0>\x20\t\r\n\f]*)/i;var r=t.exec(e);if(r){return r[1].toLowerCase()}else{return""}}function i(e,t){var r=new DOMParser;var n=r.parseFromString(e,"text/html");var i=n.body;while(t>0){t--;i=i.firstChild}if(i==null){i=Z().createDocumentFragment()}return i}function L(e){return e.match(/",0);return r.querySelector("template").content}else{var n=H(e);switch(n){case"thead":case"tbody":case"tfoot":case"colgroup":case"caption":return i(""+e+"
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