diff --git a/pages/templates/home.html b/pages/templates/home.html index 644ee98..d58cd3d 100644 --- a/pages/templates/home.html +++ b/pages/templates/home.html @@ -47,6 +47,4 @@ Atridad Lahiji // Root {{end}} {{define "foot"}} - - -{{end}} \ No newline at end of file +{{end}} diff --git a/pages/templates/layouts/base.html b/pages/templates/layouts/base.html index ad9b0a8..d91b021 100644 --- a/pages/templates/layouts/base.html +++ b/pages/templates/layouts/base.html @@ -10,12 +10,14 @@ {{template "head" .}} - + {{template "header" .}}
{{template "main" .}}
+ + {{template "foot" .}} diff --git a/pages/templates/layouts/post.html b/pages/templates/layouts/post.html index 39bccc2..216e06a 100644 --- a/pages/templates/layouts/post.html +++ b/pages/templates/layouts/post.html @@ -42,7 +42,7 @@ - + Back @@ -52,6 +52,8 @@ + + {{template "foot" .}} diff --git a/pages/templates/partials/buttonlinks.html b/pages/templates/partials/buttonlinks.html index bf28d92..9afcafd 100644 --- a/pages/templates/partials/buttonlinks.html +++ b/pages/templates/partials/buttonlinks.html @@ -1,7 +1,7 @@ {{define "buttonlinks"}} {{if eq true .Internal}} - + {{.Name}} @@ -12,4 +12,4 @@ {{end}} -{{end}} \ No newline at end of file +{{end}} diff --git a/pages/templates/partials/cardlinks.html b/pages/templates/partials/cardlinks.html index 3d04a48..9abbefe 100644 --- a/pages/templates/partials/cardlinks.html +++ b/pages/templates/partials/cardlinks.html @@ -32,6 +32,7 @@ href={{.Href}} aria-label={{.Name}} class="btn btn-circle btn-base-100 text-primary hover:btn-accent hover:text-neutral" + preload="mouseover" > diff --git a/pages/templates/partials/header.html b/pages/templates/partials/header.html index fbafc13..a037feb 100644 --- a/pages/templates/partials/header.html +++ b/pages/templates/partials/header.html @@ -11,6 +11,7 @@ diff --git a/pages/templates/post.html b/pages/templates/post.html index 83c8c03..18fefa9 100644 --- a/pages/templates/post.html +++ b/pages/templates/post.html @@ -15,6 +15,5 @@ Atridad Lahiji // Post {{end}} {{define "foot"}} - 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t=ne().querySelectorAll("[hx-trigger='restored'],[data-hx-trigger='restored']");e.addEventListener("htmx:abort",function(e){const t=e.target;const n=ie(t);if(n&&n.xhr){n.xhr.abort()}});const n=window.onpopstate?window.onpopstate.bind(window):null;window.onpopstate=function(e){if(e.state&&e.state.htmx){Wt();se(t,function(e){de(e,"htmx:restored",{document:ne(),triggerEvent:de})})}else{if(n){n(e)}}};E().setTimeout(function(){de(e,"htmx:load",{});e=null},0)});return Q}(); \ No newline at end of file diff --git a/public/js/htmx.preload.js b/public/js/htmx.preload.js new file mode 100644 index 0000000..5f6e1c0 --- /dev/null +++ b/public/js/htmx.preload.js @@ -0,0 +1,141 @@ +// This adds the "preload" extension to htmx. By default, this will +// preload the targets of any tags with `href` or `hx-get` attributes +// if they also have a `preload` attribute as well. See documentation +// for more details +htmx.defineExtension('preload', { + + onEvent: function(name, event) { + // Only take actions on "htmx:afterProcessNode" + if (name !== 'htmx:afterProcessNode') { + return + } + + // SOME HELPER FUNCTIONS WE'LL NEED ALONG THE WAY + + // attr gets the closest non-empty value from the attribute. + var attr = function(node, property) { + if (node == undefined) { return undefined } + return node.getAttribute(property) || node.getAttribute('data-' + property) || attr(node.parentElement, property) + } + + // load handles the actual HTTP fetch, and uses htmx.ajax in cases where we're + // preloading an htmx resource (this sends the same HTTP headers as a regular htmx request) + var load = function(node) { + // Called after a successful AJAX request, to mark the + // content as loaded (and prevent additional AJAX calls.) + var done = function(html) { + if (!node.preloadAlways) { + node.preloadState = 'DONE' + } + + if (attr(node, 'preload-images') == 'true') { + document.createElement('div').innerHTML = html // create and populate a node to load linked resources, too. + } + } + + return function() { + // If this value has already been loaded, then do not try again. + if (node.preloadState !== 'READY') { + return + } + + // Special handling for HX-GET - use built-in htmx.ajax function + // so that headers match other htmx requests, then set + // node.preloadState = TRUE so that requests are not duplicated + // in the future + var hxGet = node.getAttribute('hx-get') || node.getAttribute('data-hx-get') + if (hxGet) { + htmx.ajax('GET', hxGet, { + source: node, + handler: function(elt, info) { + done(info.xhr.responseText) + } + }) + return + } + + // Otherwise, perform a standard xhr request, then set + // node.preloadState = TRUE so that requests are not duplicated + // in the future. + if (node.getAttribute('href')) { + var r = new XMLHttpRequest() + r.open('GET', node.getAttribute('href')) + r.onload = function() { done(r.responseText) } + r.send() + } + } + } + + // This function processes a specific node and sets up event handlers. + // We'll search for nodes and use it below. + var init = function(node) { + // If this node DOES NOT include a "GET" transaction, then there's nothing to do here. + if (node.getAttribute('href') + node.getAttribute('hx-get') + node.getAttribute('data-hx-get') == '') { + return + } + + // Guarantee that we only initialize each node once. + if (node.preloadState !== undefined) { + return + } + + // Get event name from config. + var on = attr(node, 'preload') || 'mousedown' + const always = on.indexOf('always') !== -1 + if (always) { + on = on.replace('always', '').trim() + } + + // FALL THROUGH to here means we need to add an EventListener + + // Apply the listener to the node + node.addEventListener(on, function(evt) { + if (node.preloadState === 'PAUSE') { // Only add one event listener + node.preloadState = 'READY' // Required for the `load` function to trigger + + // Special handling for "mouseover" events. Wait 100ms before triggering load. + if (on === 'mouseover') { + window.setTimeout(load(node), 100) + } else { + load(node)() // all other events trigger immediately. + } + } + }) + + // Special handling for certain built-in event handlers + switch (on) { + case 'mouseover': + // Mirror `touchstart` events (fires immediately) + node.addEventListener('touchstart', load(node)) + + // WHhen the mouse leaves, immediately disable the preload + node.addEventListener('mouseout', function(evt) { + if ((evt.target === node) && (node.preloadState === 'READY')) { + node.preloadState = 'PAUSE' + } + }) + break + + case 'mousedown': + // Mirror `touchstart` events (fires immediately) + node.addEventListener('touchstart', load(node)) + break + } + + // Mark the node as ready to run. + node.preloadState = 'PAUSE' + node.preloadAlways = always + htmx.trigger(node, 'preload:init') // This event can be used to load content immediately. + } + + // Search for all child nodes that have a "preload" attribute + const parent = event.target || event.detail.elt; + parent.querySelectorAll("[preload]").forEach(function(node) { + // Initialize the node with the "preload" attribute + init(node) + + // Initialize all child elements that are anchors or have `hx-get` (use with care) + node.querySelectorAll('a,[hx-get],[data-hx-get]').forEach(init) + }) + } +}) diff --git a/public/js/htmx.sse.js b/public/js/htmx.sse.js index 28c4dd3..9f5af5c 100644 --- a/public/js/htmx.sse.js +++ b/public/js/htmx.sse.js @@ -6,364 +6,285 @@ This extension adds support for Server Sent Events to htmx. See /www/extensions */ (function() { + /** @type {import("../htmx").HtmxInternalApi} */ + var api - /** @type {import("../htmx").HtmxInternalApi} */ - var api; + htmx.defineExtension('sse', { - 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 - /** - * 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 + } + }, - // set a function in the public API for creating new EventSource objects - if (htmx.createEventSource == undefined) { - htmx.createEventSource = createEventSource; - } - }, + getSelectors: function() { + return ['[sse-connect]', '[data-sse-connect]', '[sse-swap]', '[data-sse-swap]'] + }, - /** - * onEvent handles all events passed to this extension. - * - * @param {string} name - * @param {Event} evt - * @returns void - */ - onEvent: function(name, evt) { + /** + * onEvent handles all events passed to this extension. + * + * @param {string} name + * @param {Event} evt + * @returns void + */ + onEvent: function(name, evt) { + var parent = evt.target || evt.detail.elt + switch (name) { + case 'htmx:beforeCleanupElement': + var internalData = api.getInternalData(parent) + // Try to remove remove an EventSource when elements are removed + var source = internalData.sseEventSource + if (source) { + api.triggerEvent(parent, 'htmx:sseClose', { + source, + type: 'nodeReplaced', + }) + internalData.sseEventSource.close() + } - var parent = evt.target || evt.detail.elt; - switch (name) { + return - case "htmx:beforeCleanupElement": - var internalData = api.getInternalData(parent) - // Try to remove remove an EventSource when elements are removed - if (internalData.sseEventSource) { - internalData.sseEventSource.close(); - } + // Try to create EventSources when elements are processed + case 'htmx:afterProcessNode': + ensureEventSourceOnElement(parent) + } + } + }) - return; + /// //////////////////////////////////////////// + // HELPER FUNCTIONS + /// //////////////////////////////////////////// - // Try to create EventSources when elements are processed - case "htmx:afterProcessNode": - ensureEventSourceOnElement(parent); - } - } - }); + /** + * 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 }) + } - /////////////////////////////////////////////// - // HELPER FUNCTIONS - /////////////////////////////////////////////// + /** + * registerSSE looks for attributes that can contain sse events, right + * now hx-trigger and sse-swap and adds listeners based on these attributes too + * the closest event source + * + * @param {HTMLElement} elt + */ + function registerSSE(elt) { + // Add message handlers for every `sse-swap` attribute + if (api.getAttributeValue(elt, 'sse-swap')) { + // Find closest existing event source + var sourceElement = api.getClosestMatch(elt, hasEventSource) + if (sourceElement == null) { + // api.triggerErrorEvent(elt, "htmx:noSSESourceError") + return null // no eventsource in parentage, orphaned element + } + + // Set internalData and source + var internalData = api.getInternalData(sourceElement) + var source = internalData.sseEventSource + + var sseSwapAttr = api.getAttributeValue(elt, 'sse-swap') + var sseEventNames = sseSwapAttr.split(',') + + for (var i = 0; i < sseEventNames.length; i++) { + const sseEventName = sseEventNames[i].trim() + const listener = function(event) { + // If the source is missing then close SSE + if (maybeCloseSSESource(sourceElement)) { + return + } + + // If the body no longer contains the element, remove the listener + if (!api.bodyContains(elt)) { + source.removeEventListener(sseEventName, listener) + return + } + + // swap the response into the DOM and trigger a notification + if (!api.triggerEvent(elt, 'htmx:sseBeforeMessage', event)) { + return + } + swap(elt, 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 + if (api.getAttributeValue(elt, 'hx-trigger')) { + // Find closest existing event source + var sourceElement = api.getClosestMatch(elt, hasEventSource) + if (sourceElement == null) { + // api.triggerErrorEvent(elt, "htmx:noSSESourceError") + return null // no eventsource in parentage, orphaned element + } + + // Set internalData and source + var internalData = api.getInternalData(sourceElement) + var source = internalData.sseEventSource + + var triggerSpecs = api.getTriggerSpecs(elt) + triggerSpecs.forEach(function(ts) { + if (ts.trigger.slice(0, 4) !== 'sse:') { + return + } + + var listener = function (event) { + if (maybeCloseSSESource(sourceElement)) { + return + } + if (!api.bodyContains(elt)) { + source.removeEventListener(ts.trigger.slice(4), listener) + } + // Trigger events to be handled by the rest of htmx + htmx.trigger(elt, ts.trigger, event) + htmx.trigger(elt, 'htmx:sseMessage', event) + } + + // Register the new listener + api.getInternalData(elt).sseEventListener = listener + source.addEventListener(ts.trigger.slice(4), listener) + }) + } + } + + /** + * ensureEventSourceOnElement 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 ensureEventSourceOnElement(elt, retryCount) { + if (elt == null) { + return null + } + + // handle extension source creation attribute + if (api.getAttributeValue(elt, 'sse-connect')) { + var sseURL = api.getAttributeValue(elt, 'sse-connect') + if (sseURL == null) { + return + } + + ensureEventSource(elt, sseURL, retryCount) + } + + registerSSE(elt) + } + + function ensureEventSource(elt, url, retryCount) { + var source = htmx.createEventSource(url) + + source.onerror = function(err) { + // Log an error event + api.triggerErrorEvent(elt, 'htmx:sseError', { error: err, 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 + retryCount = Math.max(Math.min(retryCount * 2, 128), 1) + var timeout = retryCount * 500 + window.setTimeout(function() { + ensureEventSourceOnElement(elt, retryCount) + }, timeout) + } + } + + source.onopen = function(evt) { + api.triggerEvent(elt, 'htmx:sseOpen', { source }) + + if (retryCount && retryCount > 0) { + const childrenToFix = elt.querySelectorAll("[sse-swap], [data-sse-swap], [hx-trigger], [data-hx-trigger]") + for (let i = 0; i < childrenToFix.length; i++) { + registerSSE(childrenToFix[i]) + } + // We want to increase the reconnection delay for consecutive failed attempts only + retryCount = 0 + } + } + + api.getInternalData(elt).sseEventSource = source - /** - * 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 }); - } + var closeAttribute = api.getAttributeValue(elt, "sse-close"); + if (closeAttribute) { + // close eventsource when this message is received + source.addEventListener(closeAttribute, function() { + api.triggerEvent(elt, 'htmx:sseClose', { + source, + type: 'message', + }) + source.close() + }); + } + } - function splitOnWhitespace(trigger) { - return trigger.trim().split(/\s+/); - } + /** + * 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) { + api.triggerEvent(elt, 'htmx:sseClose', { + source, + type: 'nodeMissing', + }) + source.close() + // source = null + return true + } + } + return false + } - 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 != null) { - 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; - } + /** + * @param {HTMLElement} elt + * @param {string} content + */ + function swap(elt, content) { + api.withExtensions(elt, function(extension) { + content = extension.transformResponse(content, null, elt) + }) - /** - * registerSSE looks for attributes that can contain sse events, right - * now hx-trigger and sse-swap and adds listeners based on these attributes too - * the closest event source - * - * @param {HTMLElement} elt - */ - function registerSSE(elt) { - // Add message handlers for every `sse-swap` attribute - queryAttributeOnThisOrChildren(elt, "sse-swap").forEach(function (child) { - // Find closest existing event source - var sourceElement = api.getClosestMatch(child, hasEventSource); - if (sourceElement == null) { - // api.triggerErrorEvent(elt, "htmx:noSSESourceError") - return null; // no eventsource in parentage, orphaned element - } + var swapSpec = api.getSwapSpecification(elt) + var target = api.getTarget(elt) + api.swap(target, content, swapSpec) + } - // Set internalData and source - var internalData = api.getInternalData(sourceElement); - var source = internalData.sseEventSource; - 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 source is missing then close SSE - if (maybeCloseSSESource(sourceElement)) { - return; - } - - // If the body no longer contains the element, remove the listener - if (!api.bodyContains(child)) { - source.removeEventListener(sseEventName, listener); - return; - } - - // swap the response into the DOM and trigger a notification - if(!api.triggerEvent(elt, "htmx:sseBeforeMessage", event)) { - return; - } - swap(child, event.data); - api.triggerEvent(elt, "htmx:sseMessage", event); - }; - - // Register the new listener - api.getInternalData(child).sseEventListener = listener; - source.addEventListener(sseEventName, listener); - } - }); - - // Add message handlers for every `hx-trigger="sse:*"` attribute - queryAttributeOnThisOrChildren(elt, "hx-trigger").forEach(function(child) { - // Find closest existing event source - var sourceElement = api.getClosestMatch(child, hasEventSource); - if (sourceElement == null) { - // api.triggerErrorEvent(elt, "htmx:noSSESourceError") - return null; // no eventsource in parentage, orphaned element - } - - // Set internalData and source - var internalData = api.getInternalData(sourceElement); - var source = internalData.sseEventSource; - - 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; - } - - // remove the sse: prefix from here on out - sseEventName = sseEventName.substr(4); - - var listener = function() { - if (maybeCloseSSESource(sourceElement)) { - return - } - - if (!api.bodyContains(child)) { - source.removeEventListener(sseEventName, listener); - } - } - }); - } - - /** - * ensureEventSourceOnElement 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 ensureEventSourceOnElement(elt, retryCount) { - - if (elt == null) { - return null; - } - - // handle extension source creation attribute - queryAttributeOnThisOrChildren(elt, "sse-connect").forEach(function(child) { - var sseURL = api.getAttributeValue(child, "sse-connect"); - if (sseURL == null) { - return; - } - - ensureEventSource(child, sseURL, retryCount); - }); - - // handle legacy sse, remove for HTMX2 - queryAttributeOnThisOrChildren(elt, "hx-sse").forEach(function(child) { - var sseURL = getLegacySSEURL(child); - if (sseURL == null) { - return; - } - - ensureEventSource(child, sseURL, retryCount); - }); - - registerSSE(elt); - } - - function ensureEventSource(elt, url, retryCount) { - var source = htmx.createEventSource(url); - - 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() { - ensureEventSourceOnElement(elt, Math.min(7, retryCount + 1)); - }, timeout); - } - }; - - source.onopen = function(evt) { - api.triggerEvent(elt, "htmx:sseOpen", { source: source }); - } - - api.getInternalData(elt).sseEventSource = source; - } - - /** - * 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)) { - result.push(elt); - } - - // Search all child nodes that match the requested attribute - elt.querySelectorAll("[" + attributeName + "], [data-" + attributeName + "]").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'); - }); - } - } - - function hasEventSource(node) { - return api.getInternalData(node).sseEventSource != null; - } - -})(); + function hasEventSource(node) { + return api.getInternalData(node).sseEventSource != null + } +})() diff --git a/public/js/htmx.ws.js b/public/js/htmx.ws.js index c1e2962..be1f08d 100644 --- a/public/js/htmx.ws.js +++ b/public/js/htmx.ws.js @@ -4,473 +4,464 @@ WebSockets Extension This extension adds support for WebSockets to htmx. See /www/extensions/ws.md for usage instructions. */ -(function () { - - /** @type {import("../htmx").HtmxInternalApi} */ - var api; - - htmx.defineExtension("ws", { - - /** - * init is called once, when this extension is first registered. - * @param {import("../htmx").HtmxInternalApi} apiRef - */ - init: function (apiRef) { - - // Store reference to internal API - api = apiRef; - - // Default function for creating new EventSource objects - if (!htmx.createWebSocket) { - htmx.createWebSocket = createWebSocket; - } - - // Default setting for reconnect delay - if (!htmx.config.wsReconnectDelay) { - htmx.config.wsReconnectDelay = "full-jitter"; - } - }, - - /** - * onEvent handles all events passed to this extension. - * - * @param {string} name - * @param {Event} evt - */ - onEvent: function (name, evt) { - var parent = evt.target || evt.detail.elt; - - switch (name) { - - // Try to close the socket when elements are removed - case "htmx:beforeCleanupElement": - - var internalData = api.getInternalData(parent) - - if (internalData.webSocket) { - internalData.webSocket.close(); - } - return; - - // Try to create websockets when elements are processed - case "htmx:beforeProcessNode": - forEach(queryAttributeOnThisOrChildren(parent, "ws-connect"), function (child) { - ensureWebSocket(child) - }); - forEach(queryAttributeOnThisOrChildren(parent, "ws-send"), function (child) { - ensureWebSocketSend(child) - }); - } - } - }); - - function splitOnWhitespace(trigger) { - return trigger.trim().split(/\s+/); - } - - function getLegacyWebsocketURL(elt) { - var legacySSEValue = api.getAttributeValue(elt, "hx-ws"); - 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]; - } - } - } - } - - /** - * ensureWebSocket creates a new WebSocket on the designated element, using - * the element's "ws-connect" attribute. - * @param {HTMLElement} socketElt - * @returns - */ - function ensureWebSocket(socketElt) { - - // If the element containing the WebSocket connection no longer exists, then - // do not connect/reconnect the WebSocket. - if (!api.bodyContains(socketElt)) { - return; - } - - // Get the source straight from the element's value - var wssSource = api.getAttributeValue(socketElt, "ws-connect") - - if (wssSource == null || wssSource === "") { - var legacySource = getLegacyWebsocketURL(socketElt); - if (legacySource == null) { - return; - } else { - wssSource = legacySource; - } - } - - // Guarantee that the wssSource value is a fully qualified URL - if (wssSource.indexOf("/") === 0) { - var base_part = location.hostname + (location.port ? ':' + location.port : ''); - if (location.protocol === 'https:') { - wssSource = "wss://" + base_part + wssSource; - } else if (location.protocol === 'http:') { - wssSource = "ws://" + base_part + wssSource; - } - } - - var socketWrapper = createWebsocketWrapper(socketElt, function () { - return htmx.createWebSocket(wssSource) - }); - - socketWrapper.addEventListener('message', function (event) { - if (maybeCloseWebSocketSource(socketElt)) { - return; - } - - var response = event.data; - if (!api.triggerEvent(socketElt, "htmx:wsBeforeMessage", { - message: response, - socketWrapper: socketWrapper.publicInterface - })) { - return; - } - - api.withExtensions(socketElt, function (extension) { - response = extension.transformResponse(response, null, socketElt); - }); - - var settleInfo = api.makeSettleInfo(socketElt); - var fragment = api.makeFragment(response); - - if (fragment.children.length) { - var children = Array.from(fragment.children); - for (var i = 0; i < children.length; i++) { - api.oobSwap(api.getAttributeValue(children[i], "hx-swap-oob") || "true", children[i], settleInfo); - } - } - - api.settleImmediately(settleInfo.tasks); - api.triggerEvent(socketElt, "htmx:wsAfterMessage", { message: response, socketWrapper: socketWrapper.publicInterface }) - }); - - // Put the WebSocket into the HTML Element's custom data. - api.getInternalData(socketElt).webSocket = socketWrapper; - } - - /** - * @typedef {Object} WebSocketWrapper - * @property {WebSocket} socket - * @property {Array<{message: string, sendElt: Element}>} messageQueue - * @property {number} retryCount - * @property {(message: string, sendElt: Element) => void} sendImmediately sendImmediately sends message regardless of websocket connection state - * @property {(message: string, sendElt: Element) => void} send - * @property {(event: string, handler: Function) => void} addEventListener - * @property {() => void} handleQueuedMessages - * @property {() => void} init - * @property {() => void} close - */ - /** - * - * @param socketElt - * @param socketFunc - * @returns {WebSocketWrapper} - */ - function createWebsocketWrapper(socketElt, socketFunc) { - var wrapper = { - socket: null, - messageQueue: [], - retryCount: 0, - - /** @type {Object} */ - events: {}, - - addEventListener: function (event, handler) { - if (this.socket) { - this.socket.addEventListener(event, handler); - } - - if (!this.events[event]) { - this.events[event] = []; - } - - this.events[event].push(handler); - }, - - sendImmediately: function (message, sendElt) { - if (!this.socket) { - api.triggerErrorEvent() - } - if (!sendElt || api.triggerEvent(sendElt, 'htmx:wsBeforeSend', { - message: message, - socketWrapper: this.publicInterface - })) { - this.socket.send(message); - sendElt && api.triggerEvent(sendElt, 'htmx:wsAfterSend', { - message: message, - socketWrapper: this.publicInterface - }) - } - }, - - send: function (message, sendElt) { - if (this.socket.readyState !== this.socket.OPEN) { - this.messageQueue.push({ message: message, sendElt: sendElt }); - } else { - this.sendImmediately(message, sendElt); - } - }, - - handleQueuedMessages: function () { - while (this.messageQueue.length > 0) { - var queuedItem = this.messageQueue[0] - if (this.socket.readyState === this.socket.OPEN) { - this.sendImmediately(queuedItem.message, queuedItem.sendElt); - this.messageQueue.shift(); - } else { - break; - } - } - }, - - init: function () { - if (this.socket && this.socket.readyState === this.socket.OPEN) { - // Close discarded socket - this.socket.close() - } - - // Create a new WebSocket and event handlers - /** @type {WebSocket} */ - var socket = socketFunc(); - - // The event.type detail is added for interface conformance with the - // other two lifecycle events (open and close) so a single handler method - // can handle them polymorphically, if required. - api.triggerEvent(socketElt, "htmx:wsConnecting", { event: { type: 'connecting' } }); - - this.socket = socket; - - socket.onopen = function (e) { - wrapper.retryCount = 0; - api.triggerEvent(socketElt, "htmx:wsOpen", { event: e, socketWrapper: wrapper.publicInterface }); - wrapper.handleQueuedMessages(); - } - - socket.onclose = function (e) { - // If socket should not be connected, stop further attempts to establish connection - // If Abnormal Closure/Service Restart/Try Again Later, then set a timer to reconnect after a pause. - if (!maybeCloseWebSocketSource(socketElt) && [1006, 1012, 1013].indexOf(e.code) >= 0) { - var delay = getWebSocketReconnectDelay(wrapper.retryCount); - setTimeout(function () { - wrapper.retryCount += 1; - wrapper.init(); - }, delay); - } - - // Notify client code that connection has been closed. Client code can inspect `event` field - // to determine whether closure has been valid or abnormal - api.triggerEvent(socketElt, "htmx:wsClose", { event: e, socketWrapper: wrapper.publicInterface }) - }; - - socket.onerror = function (e) { - api.triggerErrorEvent(socketElt, "htmx:wsError", { error: e, socketWrapper: wrapper }); - maybeCloseWebSocketSource(socketElt); - }; - - var events = this.events; - Object.keys(events).forEach(function (k) { - events[k].forEach(function (e) { - socket.addEventListener(k, e); - }) - }); - }, - - close: function () { - this.socket.close() - } - } - - wrapper.init(); - - wrapper.publicInterface = { - send: wrapper.send.bind(wrapper), - sendImmediately: wrapper.sendImmediately.bind(wrapper), - queue: wrapper.messageQueue - }; - - return wrapper; - } - - /** - * ensureWebSocketSend attaches trigger handles to elements with - * "ws-send" attribute - * @param {HTMLElement} elt - */ - function ensureWebSocketSend(elt) { - var legacyAttribute = api.getAttributeValue(elt, "hx-ws"); - if (legacyAttribute && legacyAttribute !== 'send') { - return; - } - - var webSocketParent = api.getClosestMatch(elt, hasWebSocket) - processWebSocketSend(webSocketParent, elt); - } - - /** - * hasWebSocket function checks if a node has webSocket instance attached - * @param {HTMLElement} node - * @returns {boolean} - */ - function hasWebSocket(node) { - return api.getInternalData(node).webSocket != null; - } - - /** - * processWebSocketSend adds event listeners to the
element so that - * messages can be sent to the WebSocket server when the form is submitted. - * @param {HTMLElement} socketElt - * @param {HTMLElement} sendElt - */ - function processWebSocketSend(socketElt, sendElt) { - var nodeData = api.getInternalData(sendElt); - var triggerSpecs = api.getTriggerSpecs(sendElt); - triggerSpecs.forEach(function (ts) { - api.addTriggerHandler(sendElt, ts, nodeData, function (elt, evt) { - if (maybeCloseWebSocketSource(socketElt)) { - return; - } - - /** @type {WebSocketWrapper} */ - var socketWrapper = api.getInternalData(socketElt).webSocket; - var headers = api.getHeaders(sendElt, api.getTarget(sendElt)); - var results = api.getInputValues(sendElt, 'post'); - var errors = results.errors; - var rawParameters = results.values; - var expressionVars = api.getExpressionVars(sendElt); - var allParameters = api.mergeObjects(rawParameters, expressionVars); - var filteredParameters = api.filterValues(allParameters, sendElt); - - var sendConfig = { - parameters: filteredParameters, - unfilteredParameters: allParameters, - headers: headers, - errors: errors, - - triggeringEvent: evt, - messageBody: undefined, - socketWrapper: socketWrapper.publicInterface - }; - - if (!api.triggerEvent(elt, 'htmx:wsConfigSend', sendConfig)) { - return; - } - - if (errors && errors.length > 0) { - api.triggerEvent(elt, 'htmx:validation:halted', errors); - return; - } - - var body = sendConfig.messageBody; - if (body === undefined) { - var toSend = Object.assign({}, sendConfig.parameters); - if (sendConfig.headers) - toSend['HEADERS'] = headers; - body = JSON.stringify(toSend); - } - - socketWrapper.send(body, elt); - - if (evt && api.shouldCancel(evt, elt)) { - evt.preventDefault(); - } - }); - }); - } - - /** - * getWebSocketReconnectDelay is the default easing function for WebSocket reconnects. - * @param {number} retryCount // The number of retries that have already taken place - * @returns {number} - */ - function getWebSocketReconnectDelay(retryCount) { - - /** @type {"full-jitter" | ((retryCount:number) => number)} */ - var delay = htmx.config.wsReconnectDelay; - if (typeof delay === 'function') { - return delay(retryCount); - } - if (delay === 'full-jitter') { - var exp = Math.min(retryCount, 6); - var maxDelay = 1000 * Math.pow(2, exp); - return maxDelay * Math.random(); - } - - logError('htmx.config.wsReconnectDelay must either be a function or the string "full-jitter"'); - } - - /** - * maybeCloseWebSocketSource checks to the if the element that created the WebSocket - * still exists in the DOM. If NOT, then the WebSocket is closed and this function - * returns TRUE. If the element DOES EXIST, then no action is taken, and this function - * returns FALSE. - * - * @param {*} elt - * @returns - */ - function maybeCloseWebSocketSource(elt) { - if (!api.bodyContains(elt)) { - api.getInternalData(elt).webSocket.close(); - return true; - } - return false; - } - - /** - * createWebSocket is the default method for creating new WebSocket objects. - * it is hoisted into htmx.createWebSocket to be overridden by the user, if needed. - * - * @param {string} url - * @returns WebSocket - */ - function createWebSocket(url) { - var sock = new WebSocket(url, []); - sock.binaryType = htmx.config.wsBinaryType; - return sock; - } - - /** - * 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-ws")) { - result.push(elt); - } - - // Search all child nodes that match the requested attribute - elt.querySelectorAll("[" + attributeName + "], [data-" + attributeName + "], [data-hx-ws], [hx-ws]").forEach(function (node) { - result.push(node) - }) - - return result - } - - /** - * @template T - * @param {T[]} arr - * @param {(T) => void} func - */ - function forEach(arr, func) { - if (arr) { - for (var i = 0; i < arr.length; i++) { - func(arr[i]); - } - } - } - -})(); - +(function() { + /** @type {import("../htmx").HtmxInternalApi} */ + var api + + htmx.defineExtension('ws', { + + /** + * init is called once, when this extension is first registered. + * @param {import("../htmx").HtmxInternalApi} apiRef + */ + init: function(apiRef) { + // Store reference to internal API + api = apiRef + + // Default function for creating new EventSource objects + if (!htmx.createWebSocket) { + htmx.createWebSocket = createWebSocket + } + + // Default setting for reconnect delay + if (!htmx.config.wsReconnectDelay) { + htmx.config.wsReconnectDelay = 'full-jitter' + } + }, + + /** + * onEvent handles all events passed to this extension. + * + * @param {string} name + * @param {Event} evt + */ + onEvent: function(name, evt) { + var parent = evt.target || evt.detail.elt + switch (name) { + // Try to close the socket when elements are removed + case 'htmx:beforeCleanupElement': + + var internalData = api.getInternalData(parent) + + if (internalData.webSocket) { + internalData.webSocket.close() + } + return + + // Try to create websockets when elements are processed + case 'htmx:beforeProcessNode': + + forEach(queryAttributeOnThisOrChildren(parent, 'ws-connect'), function(child) { + ensureWebSocket(child) + }) + forEach(queryAttributeOnThisOrChildren(parent, 'ws-send'), function(child) { + ensureWebSocketSend(child) + }) + } + } + }) + + function splitOnWhitespace(trigger) { + return trigger.trim().split(/\s+/) + } + + function getLegacyWebsocketURL(elt) { + var legacySSEValue = api.getAttributeValue(elt, 'hx-ws') + 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] + } + } + } + } + + /** + * ensureWebSocket creates a new WebSocket on the designated element, using + * the element's "ws-connect" attribute. + * @param {HTMLElement} socketElt + * @returns + */ + function ensureWebSocket(socketElt) { + // If the element containing the WebSocket connection no longer exists, then + // do not connect/reconnect the WebSocket. + if (!api.bodyContains(socketElt)) { + return + } + + // Get the source straight from the element's value + var wssSource = api.getAttributeValue(socketElt, 'ws-connect') + + if (wssSource == null || wssSource === '') { + var legacySource = getLegacyWebsocketURL(socketElt) + if (legacySource == null) { + return + } else { + wssSource = legacySource + } + } + + // Guarantee that the wssSource value is a fully qualified URL + if (wssSource.indexOf('/') === 0) { + var base_part = location.hostname + (location.port ? ':' + location.port : '') + if (location.protocol === 'https:') { + wssSource = 'wss://' + base_part + wssSource + } else if (location.protocol === 'http:') { + wssSource = 'ws://' + base_part + wssSource + } + } + + var socketWrapper = createWebsocketWrapper(socketElt, function() { + return htmx.createWebSocket(wssSource) + }) + + socketWrapper.addEventListener('message', function(event) { + if (maybeCloseWebSocketSource(socketElt)) { + return + } + + var response = event.data + if (!api.triggerEvent(socketElt, 'htmx:wsBeforeMessage', { + message: response, + socketWrapper: socketWrapper.publicInterface + })) { + return + } + + api.withExtensions(socketElt, function(extension) { + response = extension.transformResponse(response, null, socketElt) + }) + + var settleInfo = api.makeSettleInfo(socketElt) + var fragment = api.makeFragment(response) + + if (fragment.children.length) { + var children = Array.from(fragment.children) + for (var i = 0; i < children.length; i++) { + api.oobSwap(api.getAttributeValue(children[i], 'hx-swap-oob') || 'true', children[i], settleInfo) + } + } + + api.settleImmediately(settleInfo.tasks) + api.triggerEvent(socketElt, 'htmx:wsAfterMessage', { message: response, socketWrapper: socketWrapper.publicInterface }) + }) + + // Put the WebSocket into the HTML Element's custom data. + api.getInternalData(socketElt).webSocket = socketWrapper + } + + /** + * @typedef {Object} WebSocketWrapper + * @property {WebSocket} socket + * @property {Array<{message: string, sendElt: Element}>} messageQueue + * @property {number} retryCount + * @property {(message: string, sendElt: Element) => void} sendImmediately sendImmediately sends message regardless of websocket connection state + * @property {(message: string, sendElt: Element) => void} send + * @property {(event: string, handler: Function) => void} addEventListener + * @property {() => void} handleQueuedMessages + * @property {() => void} init + * @property {() => void} close + */ + /** + * + * @param socketElt + * @param socketFunc + * @returns {WebSocketWrapper} + */ + function createWebsocketWrapper(socketElt, socketFunc) { + var wrapper = { + socket: null, + messageQueue: [], + retryCount: 0, + + /** @type {Object} */ + events: {}, + + addEventListener: function(event, handler) { + if (this.socket) { + this.socket.addEventListener(event, handler) + } + + if (!this.events[event]) { + this.events[event] = [] + } + + this.events[event].push(handler) + }, + + sendImmediately: function(message, sendElt) { + if (!this.socket) { + api.triggerErrorEvent() + } + if (!sendElt || api.triggerEvent(sendElt, 'htmx:wsBeforeSend', { + message, + socketWrapper: this.publicInterface + })) { + this.socket.send(message) + sendElt && api.triggerEvent(sendElt, 'htmx:wsAfterSend', { + message, + socketWrapper: this.publicInterface + }) + } + }, + + send: function(message, sendElt) { + if (this.socket.readyState !== this.socket.OPEN) { + this.messageQueue.push({ message, sendElt }) + } else { + this.sendImmediately(message, sendElt) + } + }, + + handleQueuedMessages: function() { + while (this.messageQueue.length > 0) { + var queuedItem = this.messageQueue[0] + if (this.socket.readyState === this.socket.OPEN) { + this.sendImmediately(queuedItem.message, queuedItem.sendElt) + this.messageQueue.shift() + } else { + break + } + } + }, + + init: function() { + if (this.socket && this.socket.readyState === this.socket.OPEN) { + // Close discarded socket + this.socket.close() + } + + // Create a new WebSocket and event handlers + /** @type {WebSocket} */ + var socket = socketFunc() + + // The event.type detail is added for interface conformance with the + // other two lifecycle events (open and close) so a single handler method + // can handle them polymorphically, if required. + api.triggerEvent(socketElt, 'htmx:wsConnecting', { event: { type: 'connecting' } }) + + this.socket = socket + + socket.onopen = function(e) { + wrapper.retryCount = 0 + api.triggerEvent(socketElt, 'htmx:wsOpen', { event: e, socketWrapper: wrapper.publicInterface }) + wrapper.handleQueuedMessages() + } + + socket.onclose = function(e) { + // If socket should not be connected, stop further attempts to establish connection + // If Abnormal Closure/Service Restart/Try Again Later, then set a timer to reconnect after a pause. + if (!maybeCloseWebSocketSource(socketElt) && [1006, 1012, 1013].indexOf(e.code) >= 0) { + var delay = getWebSocketReconnectDelay(wrapper.retryCount) + setTimeout(function() { + wrapper.retryCount += 1 + wrapper.init() + }, delay) + } + + // Notify client code that connection has been closed. Client code can inspect `event` field + // to determine whether closure has been valid or abnormal + api.triggerEvent(socketElt, 'htmx:wsClose', { event: e, socketWrapper: wrapper.publicInterface }) + } + + socket.onerror = function(e) { + api.triggerErrorEvent(socketElt, 'htmx:wsError', { error: e, socketWrapper: wrapper }) + maybeCloseWebSocketSource(socketElt) + } + + var events = this.events + Object.keys(events).forEach(function(k) { + events[k].forEach(function(e) { + socket.addEventListener(k, e) + }) + }) + }, + + close: function() { + this.socket.close() + } + } + + wrapper.init() + + wrapper.publicInterface = { + send: wrapper.send.bind(wrapper), + sendImmediately: wrapper.sendImmediately.bind(wrapper), + queue: wrapper.messageQueue + } + + return wrapper + } + + /** + * ensureWebSocketSend attaches trigger handles to elements with + * "ws-send" attribute + * @param {HTMLElement} elt + */ + function ensureWebSocketSend(elt) { + var legacyAttribute = api.getAttributeValue(elt, 'hx-ws') + if (legacyAttribute && legacyAttribute !== 'send') { + return + } + + var webSocketParent = api.getClosestMatch(elt, hasWebSocket) + processWebSocketSend(webSocketParent, elt) + } + + /** + * hasWebSocket function checks if a node has webSocket instance attached + * @param {HTMLElement} node + * @returns {boolean} + */ + function hasWebSocket(node) { + return api.getInternalData(node).webSocket != null + } + + /** + * processWebSocketSend adds event listeners to the element so that + * messages can be sent to the WebSocket server when the form is submitted. + * @param {HTMLElement} socketElt + * @param {HTMLElement} sendElt + */ + function processWebSocketSend(socketElt, sendElt) { + var nodeData = api.getInternalData(sendElt) + var triggerSpecs = api.getTriggerSpecs(sendElt) + triggerSpecs.forEach(function(ts) { + api.addTriggerHandler(sendElt, ts, nodeData, function(elt, evt) { + if (maybeCloseWebSocketSource(socketElt)) { + return + } + + /** @type {WebSocketWrapper} */ + var socketWrapper = api.getInternalData(socketElt).webSocket + var headers = api.getHeaders(sendElt, api.getTarget(sendElt)) + var results = api.getInputValues(sendElt, 'post') + var errors = results.errors + var rawParameters = Object.assign({}, results.values) + var expressionVars = api.getExpressionVars(sendElt) + var allParameters = api.mergeObjects(rawParameters, expressionVars) + var filteredParameters = api.filterValues(allParameters, sendElt) + + var sendConfig = { + parameters: filteredParameters, + unfilteredParameters: allParameters, + headers, + errors, + + triggeringEvent: evt, + messageBody: undefined, + socketWrapper: socketWrapper.publicInterface + } + + if (!api.triggerEvent(elt, 'htmx:wsConfigSend', sendConfig)) { + return + } + + if (errors && errors.length > 0) { + api.triggerEvent(elt, 'htmx:validation:halted', errors) + return + } + + var body = sendConfig.messageBody + if (body === undefined) { + var toSend = Object.assign({}, sendConfig.parameters) + if (sendConfig.headers) { toSend.HEADERS = headers } + body = JSON.stringify(toSend) + } + + socketWrapper.send(body, elt) + + if (evt && api.shouldCancel(evt, elt)) { + evt.preventDefault() + } + }) + }) + } + + /** + * getWebSocketReconnectDelay is the default easing function for WebSocket reconnects. + * @param {number} retryCount // The number of retries that have already taken place + * @returns {number} + */ + function getWebSocketReconnectDelay(retryCount) { + /** @type {"full-jitter" | ((retryCount:number) => number)} */ + var delay = htmx.config.wsReconnectDelay + if (typeof delay === 'function') { + return delay(retryCount) + } + if (delay === 'full-jitter') { + var exp = Math.min(retryCount, 6) + var maxDelay = 1000 * Math.pow(2, exp) + return maxDelay * Math.random() + } + + logError('htmx.config.wsReconnectDelay must either be a function or the string "full-jitter"') + } + + /** + * maybeCloseWebSocketSource checks to the if the element that created the WebSocket + * still exists in the DOM. If NOT, then the WebSocket is closed and this function + * returns TRUE. If the element DOES EXIST, then no action is taken, and this function + * returns FALSE. + * + * @param {*} elt + * @returns + */ + function maybeCloseWebSocketSource(elt) { + if (!api.bodyContains(elt)) { + api.getInternalData(elt).webSocket.close() + return true + } + return false + } + + /** + * createWebSocket is the default method for creating new WebSocket objects. + * it is hoisted into htmx.createWebSocket to be overridden by the user, if needed. + * + * @param {string} url + * @returns WebSocket + */ + function createWebSocket(url) { + var sock = new WebSocket(url, []) + sock.binaryType = htmx.config.wsBinaryType + return sock + } + + /** + * 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-ws')) { + result.push(elt) + } + + // Search all child nodes that match the requested attribute + elt.querySelectorAll('[' + attributeName + '], [data-' + attributeName + '], [data-hx-ws], [hx-ws]').forEach(function(node) { + result.push(node) + }) + + return result + } + + /** + * @template T + * @param {T[]} arr + * @param {(T) => void} func + */ + function forEach(arr, func) { + if (arr) { + for (var i = 0; i < arr.length; i++) { + func(arr[i]) + } + } + } +})() diff --git a/public/js/hyperscript.js b/public/js/hyperscript.js index 355c78a..810c119 100644 --- a/public/js/hyperscript.js +++ b/public/js/hyperscript.js @@ -1 +1 @@ -(function(e,t){const r=t(e);if(typeof exports==="object"&&typeof exports["nodeName"]!=="string"){module.exports=r}else{e["_hyperscript"]=r;if("document"in e)e["_hyperscript"].browserInit()}})(typeof self!=="undefined"?self:this,(e=>{"use 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