htmx.org
Version:
high power tools for html
1,275 lines (1,142 loc) • 51.6 kB
JavaScript
// noinspection JSUnusedAssignment
var htmx = htmx || (function () {
'use strict';
var VERBS = ['get', 'post', 'put', 'delete', 'patch']
//====================================================================
// Utilities
//====================================================================
function parseInterval(str) {
if (str === "null" || str === "false" || str === "") {
return null;
} else if (str.lastIndexOf("ms") === str.length - 2) {
return parseFloat(str.substr(0, str.length - 2));
} else if (str.lastIndexOf("s") === str.length - 1) {
return parseFloat(str.substr(0, str.length - 1)) * 1000;
} else {
return parseFloat(str);
}
}
function getRawAttribute(elt, name) {
return elt.getAttribute && elt.getAttribute(name);
}
// resolve with both kt and data-kt prefixes
function getAttributeValue(elt, qualifiedName) {
return getRawAttribute(elt, qualifiedName) || getRawAttribute(elt, "data-" + qualifiedName);
}
function parentElt(elt) {
return elt.parentElement;
}
function getDocument() {
return document;
}
function getClosestMatch(elt, condition) {
if (condition(elt)) {
return elt;
} else if (parentElt(elt)) {
return getClosestMatch(parentElt(elt), condition);
} else {
return null;
}
}
function getClosestAttributeValue(elt, attributeName) {
var closestAttr = null;
getClosestMatch(elt, function (e) {
return closestAttr = getRawAttribute(e, attributeName);
});
return closestAttr;
}
function matches(elt, selector) {
// noinspection JSUnresolvedVariable
var matchesFunction = elt.matches ||
elt.matchesSelector || elt.msMatchesSelector || elt.mozMatchesSelector
|| elt.webkitMatchesSelector || elt.oMatchesSelector;
return matchesFunction && matchesFunction.call(elt, selector);
}
function getStartTag(str) {
var tagMatcher = /<([a-z][^\/\0>\x20\t\r\n\f]*)/i
var match = tagMatcher.exec( str );
if (match) {
return match[1].toLowerCase();
} else {
return "";
}
}
function parseHTML(resp, depth) {
var parser = new DOMParser();
var responseDoc = parser.parseFromString(resp, "text/html");
var responseNode = responseDoc.body;
while (depth > 0) {
depth--;
responseNode = responseNode.firstChild;
}
return responseNode;
}
function makeFragment(resp) {
var startTag = getStartTag(resp);
switch (startTag) {
case "thead":
case "tbody":
case "tfoot":
case "colgroup":
case "caption":
return parseHTML("<table>" + resp + "</table>", 1);
case "col":
return parseHTML("<table><colgroup>" + resp + "</colgroup></table>", 2);
case "tr":
return parseHTML("<table><tbody>" + resp + "</tbody></table>", 2);
case "td":
case "th":
return parseHTML("<table><tbody><tr>" + resp + "</tr></tbody></table>", 3);
default:
return parseHTML(resp, 0);
}
}
function isType(o, type) {
return Object.prototype.toString.call(o) === "[object " + type + "]";
}
function isFunction(o) {
return isType(o, "Function");
}
function isRawObject(o) {
return isType(o, "Object");
}
function getInternalData(elt) {
var dataProp = 'htmx-internal-data';
var data = elt[dataProp];
if (!data) {
data = elt[dataProp] = {};
}
return data;
}
function toArray(arr) {
var returnArr = [];
if (arr) {
for (var i = 0; i < arr.length; i++) {
returnArr.push(arr[i]);
}
}
return returnArr
}
function forEach(arr, func) {
if (arr) {
for (var i = 0; i < arr.length; i++) {
func(arr[i]);
}
}
}
function isScrolledIntoView(el) {
var rect = el.getBoundingClientRect();
var elemTop = rect.top;
var elemBottom = rect.bottom;
return elemTop < window.innerHeight && elemBottom >= 0;
}
function bodyContains(elt) {
return getDocument().body.contains(elt);
}
function concat(arr1, arr2) {
return arr1.concat(arr2);
}
function splitOnWhitespace(trigger) {
return trigger.split(/\s+/);
}
function mergeObjects(obj1, obj2) {
for (var key in obj2) {
if (obj2.hasOwnProperty(key)) {
obj1[key] = obj2[key];
}
}
return obj1;
}
//==========================================================================================
// public API
//==========================================================================================
function internalEval(str){
return eval(str);
}
function onLoadHelper(callback) {
var value = htmx.on("load.htmx", function(evt) {
callback(evt.detail.elt);
});
return value;
}
function logAll(){
htmx.logger = function(elt, event, data) {
if(console) {
console.log(event, elt, data);
}
}
}
function find(eltOrSelector, selector) {
if (selector) {
return eltOrSelector.querySelector(selector);
} else {
return getDocument().body.querySelector(eltOrSelector);
}
}
function findAll(eltOrSelector, selector) {
if (selector) {
return eltOrSelector.querySelectorAll(selector);
} else {
return getDocument().body.querySelectorAll(eltOrSelector);
}
}
function removeElement(elt, delay) {
if (delay) {
setTimeout(function(){removeElement(elt);}, delay)
} else {
elt.parentElement.removeChild(elt);
}
}
function addClassToElement(elt, clazz, delay) {
if (delay) {
setTimeout(function(){addClassToElement(elt, clazz);}, delay)
} else {
elt.classList.add(clazz);
}
}
function removeClassFromElement(elt, clazz, delay) {
if (delay) {
setTimeout(function(){removeClassFromElement(elt, clazz);}, delay)
} else {
elt.classList.remove(clazz);
}
}
function toggleClassOnElement(elt, clazz) {
elt.classList.toggle(clazz);
}
function takeClassForElement(elt, clazz) {
forEach(elt.parentElement.children, function(child){
removeClassFromElement(child, clazz);
})
addClassToElement(elt, clazz);
}
function closest(elt, selector) {
do if (elt == null || matches(elt, selector)) return elt;
while (elt = elt && parentElt(elt));
}
function processEventArgs(arg1, arg2, arg3) {
if (isFunction(arg2)) {
return {
target: getDocument().body,
event: arg1,
listener: arg2
}
} else {
return {
target: arg1,
event: arg2,
listener: arg3
}
}
}
function addEventListenerImpl(arg1, arg2, arg3) {
ready(function(){
var eventArgs = processEventArgs(arg1, arg2, arg3);
eventArgs.target.addEventListener(eventArgs.event, eventArgs.listener);
})
var b = isFunction(arg2);
return b ? arg2 : arg3;
}
function removeEventListenerImpl(arg1, arg2, arg3) {
ready(function(){
var eventArgs = processEventArgs(arg1, arg2, arg3);
eventArgs.target.removeEventListener(eventArgs.event, eventArgs.listener);
})
return isFunction(arg2) ? arg2 : arg3;
}
//====================================================================
// Node processing
//====================================================================
function getTarget(elt) {
var explicitTarget = getClosestMatch(elt, function(e){return getRawAttribute(e,"hx-target") !== null});
if (explicitTarget) {
var targetStr = getRawAttribute(explicitTarget, "hx-target");
if (targetStr === "this") {
return explicitTarget;
} else if (targetStr.indexOf("closest ") === 0) {
return closest(elt, targetStr.substr(8));
} else {
return getDocument().querySelector(targetStr);
}
} else {
var data = getInternalData(elt);
if (data.boosted) {
return getDocument().body;
} else {
return elt;
}
}
}
function cloneAttributes(mergeTo, mergeFrom) {
forEach(mergeTo.attributes, function (attr) {
if (!mergeFrom.hasAttribute(attr.name)) {
mergeTo.removeAttribute(attr.name)
}
});
forEach(mergeFrom.attributes, function (attr) {
mergeTo.setAttribute(attr.name, attr.value);
});
}
function handleOutOfBandSwaps(fragment) {
var settleTasks = [];
forEach(toArray(fragment.children), function (child) {
if (getAttributeValue(child, "hx-swap-oob") === "true") {
var target = getDocument().getElementById(child.id);
if (target) {
var fragment = getDocument().createDocumentFragment();
fragment.appendChild(child);
settleTasks = settleTasks.concat(swapOuterHTML(target, fragment));
} else {
child.parentNode.removeChild(child);
triggerErrorEvent(getDocument().body, "oobErrorNoTarget.htmx", {content: child})
}
}
});
return settleTasks;
}
function handleAttributes(parentNode, fragment) {
var attributeSwaps = [];
forEach(fragment.querySelectorAll("[id]"), function (newNode) {
var oldNode = parentNode.querySelector(newNode.tagName + "[id=" + newNode.id + "]")
if (oldNode) {
var newAttributes = newNode.cloneNode();
cloneAttributes(newNode, oldNode);
attributeSwaps.push(function () {
cloneAttributes(newNode, newAttributes);
});
}
});
return attributeSwaps;
}
function insertNodesBefore(parentNode, insertBefore, fragment) {
var settleTasks = handleAttributes(parentNode, fragment);
while(fragment.childNodes.length > 0){
var child = fragment.firstChild;
parentNode.insertBefore(child, insertBefore);
if (child.nodeType !== Node.TEXT_NODE) {
triggerEvent(child, 'load.htmx', {});
processNode(child);
}
}
return settleTasks;
}
function swapOuterHTML(target, fragment) {
if (target.tagName === "BODY") {
return swapInnerHTML(target, fragment);
} else {
var settleTasks = insertNodesBefore(parentElt(target), target, fragment);
parentElt(target).removeChild(target);
return settleTasks;
}
}
function swapAfterBegin(target, fragment) {
return insertNodesBefore(target, target.firstChild, fragment);
}
function swapBeforeBegin(target, fragment) {
return insertNodesBefore(parentElt(target), target, fragment);
}
function swapBeforeEnd(target, fragment) {
return insertNodesBefore(target, null, fragment);
}
function swapAfterEnd(target, fragment) {
return insertNodesBefore(parentElt(target), target.nextSibling, fragment);
}
function swapInnerHTML(target, fragment) {
var firstChild = target.firstChild;
var settleTasks = insertNodesBefore(target, firstChild, fragment);
if (firstChild) {
while (firstChild.nextSibling) {
target.removeChild(firstChild.nextSibling);
}
target.removeChild(firstChild);
}
return settleTasks;
}
function maybeSelectFromResponse(elt, fragment) {
var selector = getClosestAttributeValue(elt, "hx-select");
if (selector) {
var newFragment = getDocument().createDocumentFragment();
forEach(fragment.querySelectorAll(selector), function (node) {
newFragment.appendChild(node);
});
fragment = newFragment;
}
return fragment;
}
function swapResponse(swapStyle, target, elt, responseText) {
var fragment = makeFragment(responseText);
if (fragment) {
var settleTasks = handleOutOfBandSwaps(fragment);
fragment = maybeSelectFromResponse(elt, fragment);
switch(swapStyle) {
case "outerHTML": return concat(settleTasks, swapOuterHTML(target, fragment));
case "afterbegin": return concat(settleTasks, swapAfterBegin(target, fragment));
case "beforebegin": return concat(settleTasks, swapBeforeBegin(target, fragment));
case "beforeend": return concat(settleTasks, swapBeforeEnd(target, fragment));
case "afterend": return concat(settleTasks, swapAfterEnd(target, fragment));
default: return concat(settleTasks, swapInnerHTML(target, fragment));
}
}
}
function handleTrigger(elt, trigger) {
if (trigger) {
if (trigger.indexOf("{") === 0) {
var triggers = JSON.parse(trigger);
for (var eventName in triggers) {
if (triggers.hasOwnProperty(eventName)) {
var detail = triggers[eventName];
if (!isRawObject(detail)) {
detail = {"value": detail}
}
triggerEvent(elt, eventName, detail);
}
}
} else {
triggerEvent(elt, trigger, []);
}
}
}
function getTriggerSpec(elt) {
var triggerSpec = {
"trigger" : "click"
}
var explicitTrigger = getAttributeValue(elt, 'hx-trigger');
if (explicitTrigger) {
var tokens = splitOnWhitespace(explicitTrigger);
if (tokens.length > 0) {
var trigger = tokens[0];
if (trigger === "every") {
triggerSpec.pollInterval = parseInterval(tokens[1]);
} else if (trigger.indexOf("sse:") === 0) {
triggerSpec.sseEvent = trigger.substr(4);
} else {
triggerSpec['trigger'] = trigger;
for (var i = 1; i < tokens.length; i++) {
var token = tokens[i].trim();
if (token === "changed") {
triggerSpec.changed = true;
}
if (token === "once") {
triggerSpec.once = true;
}
if (token.indexOf("delay:") === 0) {
triggerSpec.delay = parseInterval(token.substr(6));
}
}
}
}
} else {
if (matches(elt, 'form')) {
triggerSpec['trigger'] = 'submit';
} else if (matches(elt, 'input, textarea, select')) {
triggerSpec['trigger'] = 'change';
}
}
return triggerSpec;
}
function parseClassOperation(trimmedValue) {
var split = splitOnWhitespace(trimmedValue);
if (split.length > 1) {
var operation = split[0];
var classDef = split[1].trim();
var cssClass;
var delay;
if (classDef.indexOf(":") > 0) {
var splitCssClass = classDef.split(':');
cssClass = splitCssClass[0];
delay = parseInterval(splitCssClass[1]);
} else {
cssClass = classDef;
delay = 100;
}
return {
operation:operation,
cssClass:cssClass,
delay:delay
}
} else {
return null;
}
}
function processClassList(elt, classList) {
forEach(classList.split("&"), function (run) {
var currentRunTime = 0;
forEach(run.split(","), function(value){
var trimmedValue = value.trim();
var classOperation = parseClassOperation(trimmedValue);
if (classOperation) {
if (classOperation.operation === "toggle") {
setTimeout(function () {
setInterval(function () {
elt.classList[classOperation.operation].call(elt.classList, classOperation.cssClass);
}, classOperation.delay);
}, currentRunTime);
currentRunTime = currentRunTime + classOperation.delay;
} else {
currentRunTime = currentRunTime + classOperation.delay;
setTimeout(function () {
elt.classList[classOperation.operation].call(elt.classList, classOperation.cssClass);
}, currentRunTime);
}
}
});
});
}
function cancelPolling(elt) {
getInternalData(elt).cancelled = true;
}
function processPolling(elt, verb, path, interval) {
var nodeData = getInternalData(elt);
nodeData.timeout = setTimeout(function () {
if (bodyContains(elt) && nodeData.cancelled !== true) {
issueAjaxRequest(elt, verb, path);
processPolling(elt, verb, getAttributeValue(elt, "hx-" + verb), interval);
}
}, interval);
}
function isLocalLink(elt) {
return location.hostname === elt.hostname &&
getRawAttribute(elt,'href') &&
getRawAttribute(elt,'href').indexOf("#") !== 0;
}
function boostElement(elt, nodeData, triggerSpec) {
if ((elt.tagName === "A" && isLocalLink(elt)) || elt.tagName === "FORM") {
nodeData.boosted = true;
var verb, path;
if (elt.tagName === "A") {
verb = "get";
path = getRawAttribute(elt, 'href');
} else {
var rawAttribute = getRawAttribute(elt, "method");
verb = rawAttribute ? rawAttribute.toLowerCase() : "get";
path = getRawAttribute(elt, 'action');
}
addEventListener(elt, verb, path, nodeData, triggerSpec, true);
}
}
function shouldCancel(elt) {
return elt.tagName === "FORM" ||
(matches(elt, 'input[type="submit"], button') && closest(elt, 'form') !== null) ||
(elt.tagName === "A" && elt.href && elt.href.indexOf('#') !== 0);
}
function addEventListener(elt, verb, path, nodeData, triggerSpec, explicitCancel) {
var eventListener = function (evt) {
if(explicitCancel || shouldCancel(elt)) evt.preventDefault();
var eventData = getInternalData(evt);
var elementData = getInternalData(elt);
if (!eventData.handled) {
eventData.handled = true;
if (triggerSpec.once) {
if (elementData.triggeredOnce) {
return;
} else {
elementData.triggeredOnce = true;
}
}
if (triggerSpec.changed) {
if (elementData.lastValue === elt.value) {
return;
} else {
elementData.lastValue = elt.value;
}
}
if (elementData.delayed) {
clearTimeout(elementData.delayed);
}
var issueRequest = function(){
issueAjaxRequest(elt, verb, path, evt.target);
}
if (triggerSpec.delay) {
elementData.delayed = setTimeout(issueRequest, triggerSpec.delay);
} else {
issueRequest();
}
}
};
nodeData.trigger = triggerSpec.trigger;
nodeData.eventListener = eventListener;
elt.addEventListener(triggerSpec.trigger, eventListener);
}
function initScrollHandler() {
if (!window['htmxScrollHandler']) {
var scrollHandler = function() {
forEach(getDocument().querySelectorAll("[hx-trigger='revealed']"), function (elt) {
maybeReveal(elt);
});
};
window['htmxScrollHandler'] = scrollHandler;
window.addEventListener("scroll", scrollHandler)
}
}
function maybeReveal(elt) {
var nodeData = getInternalData(elt);
if (!nodeData.revealed && isScrolledIntoView(elt)) {
nodeData.revealed = true;
issueAjaxRequest(elt, nodeData.verb, nodeData.path);
}
}
function maybeCloseSSESource(elt) {
if (!bodyContains(elt)) {
elt.sseSource.close();
return true;
}
}
function initSSESource(elt, sseSrc) {
var detail = {
config:{withCredentials: true}
};
triggerEvent(elt, "initSSE.htmx", detail);
var source = new EventSource(sseSrc, detail.config);
source.onerror = function (e) {
triggerErrorEvent(elt, "sseError.htmx", {error:e, source:source});
maybeCloseSSESource(elt);
};
getInternalData(elt).sseSource = source;
}
function processSSETrigger(elt, verb, path, sseEventName) {
var sseSource = getClosestMatch(elt, function (parent) {
return parent.sseSource;
});
if (sseSource) {
var sseListener = function () {
if (!maybeCloseSSESource(sseSource)) {
if (bodyContains(elt)) {
issueAjaxRequest(elt, verb, path);
} else {
sseSource.sseSource.removeEventListener(sseEventName, sseListener);
}
}
};
sseSource.sseSource.addEventListener(sseEventName, sseListener);
} else {
triggerErrorEvent(elt, "noSSESourceError.htmx")
}
}
function loadImmediately(elt, verb, path, nodeData, delay) {
var load = function(){
if (!nodeData.loaded) {
nodeData.loaded = true;
issueAjaxRequest(elt, verb, path);
}
}
if (delay) {
setTimeout(load, delay);
} else {
load();
}
}
function processVerbs(elt, nodeData, triggerSpec) {
var explicitAction = false;
forEach(VERBS, function (verb) {
var path = getAttributeValue(elt, 'hx-' + verb);
if (path) {
explicitAction = true;
nodeData.path = path;
nodeData.verb = verb;
if (triggerSpec.sseEvent) {
processSSETrigger(elt, verb, path, triggerSpec.sseEvent);
} else if (triggerSpec.trigger === "revealed") {
initScrollHandler();
maybeReveal(elt);
} else if (triggerSpec.trigger === "load") {
loadImmediately(elt, verb, path, nodeData, triggerSpec.delay);
} else if (triggerSpec.pollInterval) {
nodeData.polling = true;
processPolling(elt, verb, path, triggerSpec.pollInterval);
} else {
addEventListener(elt, verb, path, nodeData, triggerSpec);
}
}
});
return explicitAction;
}
function processNode(elt) {
var nodeData = getInternalData(elt);
if (!nodeData.processed) {
nodeData.processed = true;
var triggerSpec = getTriggerSpec(elt);
var explicitAction = processVerbs(elt, nodeData, triggerSpec);
if (!explicitAction && getClosestAttributeValue(elt, "hx-boost") === "true") {
boostElement(elt, nodeData, triggerSpec);
}
var sseSrc = getAttributeValue(elt, 'hx-sse-source');
if (sseSrc) {
initSSESource(elt, sseSrc);
}
var addClass = getAttributeValue(elt, 'hx-classes');
if (addClass) {
processClassList(elt, addClass);
}
}
if (elt.children) { // IE
forEach(elt.children, function(child) { processNode(child) });
}
}
//====================================================================
// Event/Log Support
//====================================================================
function sendError(elt, eventName, detail) {
var errorURL = getClosestAttributeValue(elt, "hx-error-url");
if (errorURL) {
var xhr = new XMLHttpRequest();
xhr.open("POST", errorURL);
xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
xhr.send(JSON.stringify({ "elt": elt.id, "event": eventName, "detail" : detail }));
}
}
function makeEvent(eventName, detail) {
var evt;
if (window.CustomEvent && typeof window.CustomEvent === 'function') {
evt = new CustomEvent(eventName, {bubbles: true, cancelable: true, detail: detail});
} else {
evt = getDocument().createEvent('CustomEvent');
evt.initCustomEvent(eventName, true, true, detail);
}
return evt;
}
function triggerErrorEvent(elt, eventName, detail) {
triggerEvent(elt, eventName, mergeObjects({isError:true}, detail));
}
function triggerEvent(elt, eventName, detail) {
detail["elt"] = elt;
var event = makeEvent(eventName, detail);
if (htmx.logger) {
htmx.logger(elt, eventName, detail);
if (detail.isError) {
sendError(elt, eventName, detail);
}
}
var eventResult = elt.dispatchEvent(event);
return eventResult;
}
//====================================================================
// History Support
//====================================================================
var currentPathForHistory = null;
function getHistoryElement() {
var historyElt = getDocument().querySelector('[hx-history-elt]');
return historyElt || getDocument().body;
}
function saveToHistoryCache(url, content, title, scroll) {
var historyCache = JSON.parse(localStorage.getItem("htmx-history-cache")) || [];
for (var i = 0; i < historyCache.length; i++) {
if (historyCache[i].url === url) {
historyCache = historyCache.slice(i, 1);
break;
}
}
historyCache.push({url:url, content: content, title:title, scroll:scroll})
while (historyCache.length > htmx.config.historyCacheSize) {
historyCache.shift();
}
localStorage.setItem("htmx-history-cache", JSON.stringify(historyCache));
}
function getCachedHistory(url) {
var historyCache = JSON.parse(localStorage.getItem("htmx-history-cache")) || [];
for (var i = 0; i < historyCache.length; i++) {
if (historyCache[i].url === url) {
return historyCache[i];
}
}
return null;
}
function saveHistory() {
var elt = getHistoryElement();
var path = currentPathForHistory || location.pathname+location.search;
triggerEvent(getDocument().body, "beforeHistorySave.htmx", {path:path, historyElt:elt});
if(htmx.config.historyEnabled) history.replaceState({}, getDocument().title, window.location.href);
saveToHistoryCache(path, elt.innerHTML, getDocument().title, window.scrollY);
}
function pushUrlIntoHistory(path) {
if(htmx.config.historyEnabled) history.pushState({}, "", path);
currentPathForHistory = path;
}
function settleImmediately(settleTasks) {
forEach(settleTasks, function (task) {
task.call();
});
}
function loadHistoryFromServer(path) {
var request = new XMLHttpRequest();
var details = {path: path, xhr:request};
triggerEvent(getDocument().body, "historyCacheMiss.htmx", details);
request.open('GET', path, true);
request.onload = function () {
if (this.status >= 200 && this.status < 400) {
triggerEvent(getDocument().body, "historyCacheMissLoad.htmx", details);
var fragment = makeFragment(this.response);
fragment = fragment.querySelector('[hx-history-elt]') || fragment;
settleImmediately(swapInnerHTML(getHistoryElement(), fragment));
currentPathForHistory = path;
} else {
triggerErrorEvent(getDocument().body, "historyCacheMissLoadError.htmx", details);
}
};
request.send();
}
function restoreHistory(path) {
saveHistory(currentPathForHistory);
path = path || location.pathname+location.search;
triggerEvent(getDocument().body, "historyRestore.htmx", {path:path});
var cached = getCachedHistory(path);
if (cached) {
settleImmediately(swapInnerHTML(getHistoryElement(), makeFragment(cached.content)));
document.title = cached.title;
window.scrollTo(0, cached.scroll);
currentPathForHistory = path;
} else {
loadHistoryFromServer(path);
}
}
function shouldPush(elt) {
return getClosestAttributeValue(elt, "hx-push-url") === "true" ||
(elt.tagName === "A" && getInternalData(elt).boosted);
}
function addRequestIndicatorClasses(elt) {
mutateRequestIndicatorClasses(elt, "add");
}
function removeRequestIndicatorClasses(elt) {
mutateRequestIndicatorClasses(elt, "remove");
}
function mutateRequestIndicatorClasses(elt, action) {
var indicator = getClosestAttributeValue(elt, 'hx-indicator');
if (indicator) {
var indicators = getDocument().querySelectorAll(indicator);
} else {
indicators = [elt];
}
forEach(indicators, function(ic) {
ic.classList[action].call(ic.classList, "htmx-request");
});
}
//====================================================================
// Input Value Processing
//====================================================================
function haveSeenNode(processed, elt) {
for (var i = 0; i < processed.length; i++) {
var node = processed[i];
if (node.isSameNode(elt)) {
return true;
}
}
return false;
}
function shouldInclude(elt) {
if(elt.name === "" || elt.name == null || elt.disabled) {
return false;
}
// ignore "submitter" types (see jQuery src/serialize.js)
if (elt.type === "button" || elt.type === "submit" || elt.tagName === "image" || elt.tagName === "reset" || elt.tagName === "file" ) {
return false;
}
if (elt.type === "checkbox" || elt.type === "radio" ) {
return elt.checked;
}
return true;
}
function processInputValue(processed, values, elt) {
if (elt == null || haveSeenNode(processed, elt)) {
return;
} else {
processed.push(elt);
}
if (shouldInclude(elt)) {
var name = getRawAttribute(elt,"name");
var value = elt.value;
if (name && value) {
var current = values[name];
if(current) {
if (Array.isArray(current)) {
current.push(value);
} else {
values[name] = [current, value];
}
} else {
values[name] = value;
}
}
}
if (matches(elt, 'form')) {
var inputs = elt.elements;
forEach(inputs, function(input) {
processInputValue(processed, values, input);
});
}
}
function getInputValues(elt, verb) {
var processed = [];
var values = {};
// include the element itself
processInputValue(processed, values, elt);
// include any explicit includes
var includes = getClosestAttributeValue(elt, "hx-include");
if (includes) {
var nodes = getDocument().querySelectorAll(includes);
forEach(nodes, function(node) {
processInputValue(processed, values, node);
});
}
// for a non-GET include the closest form
if (verb !== 'get') {
processInputValue(processed, values, closest(elt, 'form'));
}
return values;
}
function appendParam(returnStr, name, realValue) {
if (returnStr !== "") {
returnStr += "&";
}
returnStr += encodeURIComponent(name) + "=" + encodeURIComponent(realValue);
return returnStr;
}
function urlEncode(values) {
var returnStr = "";
for (var name in values) {
if (values.hasOwnProperty(name)) {
var value = values[name];
if (Array.isArray(value)) {
forEach(value, function(v) {
returnStr = appendParam(returnStr, name, v);
});
} else {
returnStr = appendParam(returnStr, name, value);
}
}
}
return returnStr;
}
//====================================================================
// Ajax
//====================================================================
function getHeaders(elt, target, prompt, eventTarget) {
var headers = {
"X-HX-Request" : "true",
"X-HX-Trigger" : getRawAttribute(elt, "id"),
"X-HX-Trigger-Name" : getRawAttribute(elt, "name"),
"X-HX-Target" : getRawAttribute(target, "id"),
"Current-URL" : getDocument().location.href,
}
if (prompt) {
headers["X-HX-Prompt"] = prompt;
}
if (eventTarget) {
headers["X-HX-Event-Target"] = getRawAttribute(eventTarget, "id");
}
if (getDocument().activeElement) {
headers["X-HX-Active-Element"] = getRawAttribute(getDocument().activeElement, "id");
headers["X-HX-Active-Element-Name"] = getRawAttribute(getDocument().activeElement, "name");
if (getDocument().activeElement.value) {
headers["X-HX-Active-Element-Value"] = getRawAttribute(getDocument().activeElement, "value");
}
}
return headers;
}
function filterValues(inputValues, elt, verb) {
var paramsValue = getClosestAttributeValue(elt, "hx-params");
if (paramsValue) {
if (paramsValue === "none") {
return {};
} else if (paramsValue === "*") {
return inputValues;
} else if(paramsValue.indexOf("not ") === 0) {
forEach(paramsValue.substr(4).split(","), function (name) {
name = name.trim();
delete inputValues[name];
});
return inputValues;
} else {
var newValues = {}
forEach(paramsValue.split(","), function (name) {
name = name.trim();
newValues[name] = inputValues[name];
});
return newValues;
}
} else {
return inputValues;
}
}
function getSwapSpecification(elt) {
var swapInfo = getClosestAttributeValue(elt, "hx-swap");
var swapSpec = {
"swapStyle" : htmx.config.defaultSwapStyle,
"swapDelay" : htmx.config.defaultSwapDelay,
"settleDelay" : htmx.config.defaultSettleDelay
}
if (swapInfo) {
var split = splitOnWhitespace(swapInfo);
if (split.length > 0) {
swapSpec["swapStyle"] = split[0];
for (var i = 1; i < split.length; i++) {
var modifier = split[i];
if (modifier.indexOf("swap:") === 0) {
swapSpec["swapDelay"] = parseInterval(modifier.substr(5));
}
if (modifier.indexOf("settle:") === 0) {
swapSpec["settleDelay"] = parseInterval(modifier.substr(7));
}
}
}
}
return swapSpec;
}
function issueAjaxRequest(elt, verb, path, eventTarget) {
var target = getTarget(elt);
if (target == null) {
triggerErrorEvent(elt, 'targetError.htmx', {target: getRawAttribute(elt, "hx-target")});
return;
}
var eltData = getInternalData(elt);
if (eltData.requestInFlight) {
return;
} else {
eltData.requestInFlight = true;
}
var endRequestLock = function(){
eltData.requestInFlight = false
}
var promptQuestion = getClosestAttributeValue(elt, "hx-prompt");
if (promptQuestion) {
var promptResponse = prompt(promptQuestion);
if(!triggerEvent(elt, 'prompt.htmx', {prompt: promptResponse, target:target})) return endRequestLock();
}
var confirmQuestion = getClosestAttributeValue(elt, "hx-confirm");
if (confirmQuestion) {
if(!confirm(confirmQuestion)) return endRequestLock();
}
var xhr = new XMLHttpRequest();
var headers = getHeaders(elt, target, promptResponse, eventTarget);
var rawParameters = getInputValues(elt, verb);
var filteredParameters = filterValues(rawParameters, elt, verb);
if (verb !== 'get') {
headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
if (verb !== 'post') {
headers['X-HTTP-Method-Override'] = verb.toUpperCase();
}
}
var requestConfig = {
parameters: filteredParameters,
unfilteredParameters:rawParameters,
headers:headers,
target:target,
verb:verb
};
if(!triggerEvent(elt, 'configRequest.htmx', requestConfig)) return endRequestLock();
// request type
var requestURL;
if (verb === 'get') {
var noValues = Object.keys(filteredParameters).length === 0;
requestURL = path + (noValues ? "" : "?" + urlEncode(filteredParameters));
xhr.open('GET', requestURL, true);
} else {
requestURL = path;
xhr.open('POST', requestURL, true);
}
xhr.overrideMimeType("text/html");
// request headers
for (var header in headers) {
if (headers.hasOwnProperty(header)) {
if(headers[header]) xhr.setRequestHeader(header, headers[header]);
}
}
var eventDetail = {xhr: xhr, target: target};
xhr.onload = function () {
try {
if (!triggerEvent(elt, 'beforeOnLoad.htmx', eventDetail)) return;
handleTrigger(elt, this.getResponseHeader("X-HX-Trigger"));
var pushedUrl = this.getResponseHeader("X-HX-Push");
var shouldSaveHistory = shouldPush(elt) || pushedUrl;
if (this.status >= 200 && this.status < 400) {
if (this.status === 286) {
cancelPolling(elt);
}
// don't process 'No Content' response
if (this.status !== 204) {
if (!triggerEvent(elt, 'beforeSwap.htmx', eventDetail)) return;
var resp = this.response;
// Save current page
if (shouldSaveHistory) {
saveHistory();
}
var swapSpec = getSwapSpecification(elt);
target.classList.add("htmx-swapping");
var doSwap = function () {
try {
var settleTasks = swapResponse(swapSpec.swapStyle, target, elt, resp);
target.classList.remove("htmx-swapping");
target.classList.add("htmx-settling");
triggerEvent(elt, 'afterSwap.htmx', eventDetail);
var doSettle = function(){
forEach(settleTasks, function (settleTask) {
settleTask.call();
});
target.classList.remove("htmx-settling");
// push URL and save new page
if (shouldSaveHistory) {
pushUrlIntoHistory(pushedUrl || requestURL );
}
triggerEvent(elt, 'afterSettle.htmx', eventDetail);
}
if (swapSpec.settleDelay > 0) {
setTimeout(doSettle, swapSpec.settleDelay)
} else {
doSettle();
}
} catch (e) {
triggerErrorEvent(elt, 'swapError.htmx', eventDetail);
throw e;
}
};
if (swapSpec.swapDelay > 0) {
setTimeout(doSwap, swapSpec.swapDelay)
} else {
doSwap();
}
}
} else {
triggerErrorEvent(elt, 'responseError.htmx', eventDetail);
}
} catch (e) {
eventDetail['exception'] = e;
triggerErrorEvent(elt, 'onLoadError.htmx', eventDetail);
throw e;
} finally {
removeRequestIndicatorClasses(elt);
endRequestLock();
triggerEvent(elt, 'afterOnLoad.htmx', eventDetail);
}
}
xhr.onerror = function () {
removeRequestIndicatorClasses(elt);
triggerErrorEvent(elt, 'sendError.htmx', eventDetail);
endRequestLock();
}
if(!triggerEvent(elt, 'beforeRequest.htmx', eventDetail)) return endRequestLock();
addRequestIndicatorClasses(elt);
xhr.send(verb === 'get' ? null : urlEncode(filteredParameters));
}
//====================================================================
// Initialization
//====================================================================
function ready(fn) {
if (getDocument().readyState !== 'loading') {
fn();
} else {
getDocument().addEventListener('DOMContentLoaded', fn);
}
}
// insert htmx-indicator css rules immediate, if not configured otherwise
(function() {
var metaConfig = getMetaConfig();
if (metaConfig === null || metaConfig.includeIndicatorStyles !== false) {
getDocument().head.insertAdjacentHTML("beforeend",
"<style>\
.htmx-indicator{opacity:0;transition: opacity 200ms ease-in;}\
.htmx-request .htmx-indicator{opacity:1}\
.htmx-request.htmx-indicator{opacity:1}\
</style>");
}
})();
function getMetaConfig() {
var element = getDocument().querySelector('meta[name="htmx-config"]');
if (element) {