//AMD insanity
(function (root, factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define([], factory);
} else {
// Browser globals
root.htmx = factory();
}
}(typeof self !== 'undefined' ? self : this, function () {
return (function () {
'use strict';
// Public API
var htmx = {
onLoad: onLoadHelper,
process: processNode,
on: addEventListenerImpl,
off: removeEventListenerImpl,
trigger : triggerEvent,
ajax : ajaxHelper,
find : find,
findAll : findAll,
closest : closest,
remove : removeElement,
addClass : addClassToElement,
removeClass : removeClassFromElement,
toggleClass : toggleClassOnElement,
takeClass : takeClassForElement,
defineExtension : defineExtension,
removeExtension : removeExtension,
logAll : logAll,
logger : null,
config : {
historyEnabled:true,
historyCacheSize:10,
defaultSwapStyle:'innerHTML',
defaultSwapDelay:0,
defaultSettleDelay:100,
includeIndicatorStyles:true,
indicatorClass:'htmx-indicator',
requestClass:'htmx-request',
settlingClass:'htmx-settling',
swappingClass:'htmx-swapping',
allowEval:true,
attributesToSettle:["class", "style", "width", "height"]
},
parseInterval:parseInterval,
_:internalEval,
createEventSource: function(url){
return new EventSource(url, {withCredentials:true})
},
createWebSocket: function(url){
return new WebSocket(url, []);
}
};
var VERBS = ['get', 'post', 'put', 'delete', 'patch'];
var VERB_SELECTOR = VERBS.map(function(verb){
return "[hx-" + verb + "], [data-hx-" + verb + "]"
}).join(", ");
//====================================================================
// Utilities
//====================================================================
function parseInterval(str) {
if (str == undefined) {
return undefined
}
if (str.slice(-2) == "ms") {
return parseFloat(str.slice(0,-2)) || undefined
}
if (str.slice(-1) == "s") {
return (parseFloat(str.slice(0,-1)) * 1000) || undefined
}
return parseFloat(str) || undefined
}
function getRawAttribute(elt, name) {
return elt.getAttribute && elt.getAttribute(name);
}
// resolve with both hx and data-hx prefixes
function hasAttribute(elt, qualifiedName) {
return elt.hasAttribute && (elt.hasAttribute(qualifiedName) ||
elt.hasAttribute("data-" + qualifiedName));
}
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 = getAttributeValue(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;
}
if (responseNode == null) {
responseNode = getDocument().createDocumentFragment();
}
return responseNode;
}
function makeFragment(resp) {
var startTag = getStartTag(resp);
switch (startTag) {
case "thead":
case "tbody":
case "tfoot":
case "colgroup":
case "caption":
return parseHTML("
", 1);
case "col":
return parseHTML("", 2);
case "tr":
return parseHTML("", 2);
case "td":
case "th":
return parseHTML("", 3);
case "script":
return parseHTML("" + resp + "
", 1);
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 splitOnWhitespace(trigger) {
return trigger.trim().split(/\s+/);
}
function mergeObjects(obj1, obj2) {
for (var key in obj2) {
if (obj2.hasOwnProperty(key)) {
obj1[key] = obj2[key];
}
}
return obj1;
}
function parseJSON(jString) {
try {
return JSON.parse(jString);
} catch(error) {
logError(error);
return null;
}
}
//==========================================================================================
// public API
//==========================================================================================
function internalEval(str){
return maybeEval(getDocument().body, function () {
return eval(str);
});
}
function onLoadHelper(callback) {
var value = htmx.on("htmx:load", 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 find(getDocument(), eltOrSelector);
}
}
function findAll(eltOrSelector, selector) {
if (selector) {
return eltOrSelector.querySelectorAll(selector);
} else {
return findAll(getDocument(), eltOrSelector);
}
}
function removeElement(elt, delay) {
elt = resolveTarget(elt);
if (delay) {
setTimeout(function(){removeElement(elt);}, delay)
} else {
elt.parentElement.removeChild(elt);
}
}
function addClassToElement(elt, clazz, delay) {
elt = resolveTarget(elt);
if (delay) {
setTimeout(function(){addClassToElement(elt, clazz);}, delay)
} else {
elt.classList.add(clazz);
}
}
function removeClassFromElement(elt, clazz, delay) {
elt = resolveTarget(elt);
if (delay) {
setTimeout(function(){removeClassFromElement(elt, clazz);}, delay)
} else {
elt.classList.remove(clazz);
}
}
function toggleClassOnElement(elt, clazz) {
elt = resolveTarget(elt);
elt.classList.toggle(clazz);
}
function takeClassForElement(elt, clazz) {
elt = resolveTarget(elt);
forEach(elt.parentElement.children, function(child){
removeClassFromElement(child, clazz);
})
addClassToElement(elt, clazz);
}
function closest(elt, selector) {
elt = resolveTarget(elt);
do if (elt == null || matches(elt, selector)) return elt;
while (elt = elt && parentElt(elt));
}
function resolveTarget(arg2) {
if (isType(arg2, 'String')) {
return find(arg2);
} else {
return arg2;
}
}
function processEventArgs(arg1, arg2, arg3) {
if (isFunction(arg2)) {
return {
target: getDocument().body,
event: arg1,
listener: arg2
}
} else {
return {
target: resolveTarget(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 getAttributeValue(e,"hx-target") !== null});
if (explicitTarget) {
var targetStr = getAttributeValue(explicitTarget, "hx-target");
if (targetStr === "this") {
return explicitTarget;
} else if (targetStr.indexOf("closest ") === 0) {
return closest(elt, targetStr.substr(8));
} else if (targetStr.indexOf("find ") === 0) {
return find(elt, targetStr.substr(5));
} else {
return getDocument().querySelector(targetStr);
}
} else {
var data = getInternalData(elt);
if (data.boosted) {
return getDocument().body;
} else {
return elt;
}
}
}
function shouldSettleAttribute(name) {
var attributesToSettle = htmx.config.attributesToSettle;
for (var i = 0; i < attributesToSettle.length; i++) {
if (name === attributesToSettle[i]) {
return true;
}
}
return false;
}
function cloneAttributes(mergeTo, mergeFrom) {
forEach(mergeTo.attributes, function (attr) {
if (!mergeFrom.hasAttribute(attr.name) && shouldSettleAttribute(attr.name)) {
mergeTo.removeAttribute(attr.name)
}
});
forEach(mergeFrom.attributes, function (attr) {
if (shouldSettleAttribute(attr.name)) {
mergeTo.setAttribute(attr.name, attr.value);
}
});
}
function isInlineSwap(swapStyle, target) {
var extensions = getExtensions(target);
for (var i = 0; i < extensions.length; i++) {
var extension = extensions[i];
try {
if (extension.isInlineSwap(swapStyle)) {
return true;
}
} catch(e) {
logError(e);
}
}
return swapStyle === "outerHTML";
}
function oobSwap(oobValue, oobElement, settleInfo) {
var selector = "#" + oobElement.id;
var swapStyle = "outerHTML";
if (oobValue === "true") {
// do nothing
} else if (oobValue.indexOf(":") > 0) {
swapStyle = oobValue.substr(0, oobValue.indexOf(":"));
selector = oobValue.substr(oobValue.indexOf(":") + 1, oobValue.length);
} else {
swapStyle = oobValue;
}
var target = getDocument().querySelector(selector);
if (target) {
var fragment;
fragment = getDocument().createDocumentFragment();
fragment.appendChild(oobElement); // pulls the child out of the existing fragment
if (!isInlineSwap(swapStyle, target)) {
fragment = oobElement; // if this is not an inline swap, we use the content of the node, not the node itself
}
swap(swapStyle, target, target, fragment, settleInfo);
} else {
oobElement.parentNode.removeChild(oobElement);
triggerErrorEvent(getDocument().body, "htmx:oobErrorNoTarget", {content: oobElement})
}
return oobValue;
}
function handleOutOfBandSwaps(fragment, settleInfo) {
forEach(findAll(fragment, '[hx-swap-oob], [data-hx-swap-oob]'), function (oobElement) {
var oobValue = getAttributeValue(oobElement, "hx-swap-oob");
if (oobValue != null) {
oobSwap(oobValue, oobElement, settleInfo);
}
});
}
function handlePreservedElements(fragment) {
forEach(findAll(fragment, '[hx-preserve], [data-hx-preserve]'), function (preservedElt) {
var id = getAttributeValue(preservedElt, "id");
var oldElt = getDocument().getElementById(id);
preservedElt.parentNode.replaceChild(oldElt, preservedElt);
});
}
function handleAttributes(parentNode, fragment, settleInfo) {
forEach(fragment.querySelectorAll("[id]"), function (newNode) {
if (newNode.id && newNode.id.length > 0) {
var oldNode = parentNode.querySelector(newNode.tagName + "[id='" + newNode.id + "']");
if (oldNode && oldNode !== parentNode) {
var newAttributes = newNode.cloneNode();
cloneAttributes(newNode, oldNode);
settleInfo.tasks.push(function () {
cloneAttributes(newNode, newAttributes);
});
}
}
});
}
function makeAjaxLoadTask(child) {
return function () {
processNode(child);
processScripts(child);
processFocus(child)
triggerEvent(child, 'htmx:load');
};
}
function processFocus(child) {
var autofocus = "[autofocus]";
var autoFocusedElt = matches(child, autofocus) ? child : child.querySelector(autofocus)
if (autoFocusedElt != null) {
autoFocusedElt.focus();
}
}
function insertNodesBefore(parentNode, insertBefore, fragment, settleInfo) {
handleAttributes(parentNode, fragment, settleInfo);
while(fragment.childNodes.length > 0){
var child = fragment.firstChild;
parentNode.insertBefore(child, insertBefore);
if (child.nodeType !== Node.TEXT_NODE && child.nodeType !== Node.COMMENT_NODE) {
settleInfo.tasks.push(makeAjaxLoadTask(child));
}
}
}
function closeConnections(target) {
var internalData = getInternalData(target);
if (internalData.webSocket) {
internalData.webSocket.close();
}
if (internalData.sseEventSource) {
internalData.sseEventSource.close();
}
if (target.children) { // IE
forEach(target.children, function(child) { closeConnections(child) });
}
}
function swapOuterHTML(target, fragment, settleInfo) {
if (target.tagName === "BODY") {
return swapInnerHTML(target, fragment);
} else {
var eltBeforeNewContent = target.previousSibling;
insertNodesBefore(parentElt(target), target, fragment, settleInfo);
if (eltBeforeNewContent == null) {
var newElt = parentElt(target).firstChild;
} else {
var newElt = eltBeforeNewContent.nextSibling;
}
getInternalData(target).replacedWith = newElt; // tuck away so we can fire events on it later
while(newElt && newElt !== target) {
if (newElt.nodeType === Node.ELEMENT_NODE) {
settleInfo.elts.push(newElt);
}
newElt = newElt.nextElementSibling;
}
closeConnections(target);
parentElt(target).removeChild(target);
}
}
function swapAfterBegin(target, fragment, settleInfo) {
return insertNodesBefore(target, target.firstChild, fragment, settleInfo);
}
function swapBeforeBegin(target, fragment, settleInfo) {
return insertNodesBefore(parentElt(target), target, fragment, settleInfo);
}
function swapBeforeEnd(target, fragment, settleInfo) {
return insertNodesBefore(target, null, fragment, settleInfo);
}
function swapAfterEnd(target, fragment, settleInfo) {
return insertNodesBefore(parentElt(target), target.nextSibling, fragment, settleInfo);
}
function swapInnerHTML(target, fragment, settleInfo) {
var firstChild = target.firstChild;
insertNodesBefore(target, firstChild, fragment, settleInfo);
if (firstChild) {
while (firstChild.nextSibling) {
closeConnections(firstChild.nextSibling)
target.removeChild(firstChild.nextSibling);
}
closeConnections(firstChild)
target.removeChild(firstChild);
}
}
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 swap(swapStyle, elt, target, fragment, settleInfo) {
switch (swapStyle) {
case "none":
return;
case "outerHTML":
swapOuterHTML(target, fragment, settleInfo);
return;
case "afterbegin":
swapAfterBegin(target, fragment, settleInfo);
return;
case "beforebegin":
swapBeforeBegin(target, fragment, settleInfo);
return;
case "beforeend":
swapBeforeEnd(target, fragment, settleInfo);
return;
case "afterend":
swapAfterEnd(target, fragment, settleInfo);
return;
default:
var extensions = getExtensions(elt);
for (var i = 0; i < extensions.length; i++) {
var ext = extensions[i];
try {
var newElements = ext.handleSwap(swapStyle, target, fragment, settleInfo);
if (newElements) {
if (typeof newElements.length !== 'undefined') {
// if handleSwap returns an array (like) of elements, we handle them
for (var j = 0; j < newElements.length; j++) {
var child = newElements[j];
if (child.nodeType !== Node.TEXT_NODE && child.nodeType !== Node.COMMENT_NODE) {
settleInfo.tasks.push(makeAjaxLoadTask(child));
}
}
}
return;
}
} catch (e) {
logError(e);
}
}
swapInnerHTML(target, fragment, settleInfo);
}
}
var TITLE_FINDER = /([\s\S]+?)<\/title>/im;
function findTitle(content) {
var result = TITLE_FINDER.exec(content);
if (result) {
return result[1];
}
}
function selectAndSwap(swapStyle, target, elt, responseText, settleInfo) {
var title = findTitle(responseText);
if(title) {
var titleElt = find("title");
if(titleElt) {
titleElt.innerHTML = title;
} else {
window.document.title = title;
}
}
var fragment = makeFragment(responseText);
if (fragment) {
handleOutOfBandSwaps(fragment, settleInfo);
handlePreservedElements(fragment);
fragment = maybeSelectFromResponse(elt, fragment);
return swap(swapStyle, elt, target, fragment, settleInfo);
}
}
function handleTrigger(xhr, header, elt) {
var triggerBody = xhr.getResponseHeader(header);
if (triggerBody.indexOf("{") === 0) {
var triggers = parseJSON(triggerBody);
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, triggerBody, []);
}
}
var WHITESPACE = /\s/;
var WHITESPACE_OR_COMMA = /[\s,]/;
var SYMBOL_START = /[_$a-zA-Z]/;
var SYMBOL_CONT = /[_$a-zA-Z0-9]/;
var STRINGISH_START = ['"', "'", "/"];
var NOT_WHITESPACE = /[^\s]/;
function tokenizeString(str) {
var tokens = [];
var position = 0;
while (position < str.length) {
if(SYMBOL_START.exec(str.charAt(position))) {
var startPosition = position;
while (SYMBOL_CONT.exec(str.charAt(position + 1))) {
position++;
}
tokens.push(str.substr(startPosition, position - startPosition + 1));
} else if (STRINGISH_START.indexOf(str.charAt(position)) !== -1) {
var startChar = str.charAt(position);
var startPosition = position;
position++;
while (position < str.length && str.charAt(position) !== startChar ) {
if (str.charAt(position) === "\\") {
position++;
}
position++;
}
tokens.push(str.substr(startPosition, position - startPosition + 1));
} else {
var symbol = str.charAt(position);
tokens.push(symbol);
}
position++;
}
return tokens;
}
function isPossibleRelativeReference(token, last, paramName) {
return SYMBOL_START.exec(token.charAt(0)) &&
token !== "true" &&
token !== "false" &&
token !== "this" &&
token !== paramName &&
last !== ".";
}
function maybeGenerateConditional(elt, tokens, paramName) {
if (tokens[0] === '[') {
tokens.shift();
var bracketCount = 1;
var conditionalSource = " return (function(" + paramName + "){ return (";
var last = null;
while (tokens.length > 0) {
var token = tokens[0];
if (token === "]") {
bracketCount--;
if (bracketCount === 0) {
if (last === null) {
conditionalSource = conditionalSource + "true";
}
tokens.shift();
conditionalSource += ")})";
try {
var conditionFunction = maybeEval(elt,function () {
return Function(conditionalSource)();
},
function(){return true})
conditionFunction.source = conditionalSource;
return conditionFunction;
} catch (e) {
triggerErrorEvent(getDocument().body, "htmx:syntax:error", {error:e, source:conditionalSource})
return null;
}
}
} else if (token === "[") {
bracketCount++;
}
if (isPossibleRelativeReference(token, last, paramName)) {
conditionalSource += "((" + paramName + "." + token + ") ? (" + paramName + "." + token + ") : (window." + token + "))";
} else {
conditionalSource = conditionalSource + token;
}
last = tokens.shift();
}
}
}
function consumeUntil(tokens, match) {
var result = "";
while (tokens.length > 0 && !tokens[0].match(match)) {
result += tokens.shift();
}
return result;
}
function getTriggerSpecs(elt) {
var explicitTrigger = getAttributeValue(elt, 'hx-trigger');
var triggerSpecs = [];
if (explicitTrigger) {
var tokens = tokenizeString(explicitTrigger);
do {
consumeUntil(tokens, NOT_WHITESPACE);
var initialLength = tokens.length;
var trigger = consumeUntil(tokens, /[,\[\s]/);
if (trigger !== "") {
if (trigger === "every") {
var every = {trigger: 'every'};
consumeUntil(tokens, NOT_WHITESPACE);
every.pollInterval = parseInterval(consumeUntil(tokens, WHITESPACE));
triggerSpecs.push(every);
} else if (trigger.indexOf("sse:") === 0) {
triggerSpecs.push({trigger: 'sse', sseEvent: trigger.substr(4)});
} else {
var triggerSpec = {trigger: trigger};
var eventFilter = maybeGenerateConditional(elt, tokens, "event");
if (eventFilter) {
triggerSpec.eventFilter = eventFilter;
}
while (tokens.length > 0 && tokens[0] !== ",") {
consumeUntil(tokens, NOT_WHITESPACE)
var token = tokens.shift();
if (token === "changed") {
triggerSpec.changed = true;
} else if (token === "once") {
triggerSpec.once = true;
} else if (token === "delay" && tokens[0] === ":") {
tokens.shift();
triggerSpec.delay = parseInterval(consumeUntil(tokens, WHITESPACE_OR_COMMA));
} else if (token === "from" && tokens[0] === ":") {
tokens.shift();
triggerSpec.from = consumeUntil(tokens, WHITESPACE_OR_COMMA);
} else if (token === "throttle" && tokens[0] === ":") {
tokens.shift();
triggerSpec.throttle = parseInterval(consumeUntil(tokens, WHITESPACE_OR_COMMA));
} else {
triggerErrorEvent(elt, "htmx:syntax:error", {token:tokens.shift()});
}
}
triggerSpecs.push(triggerSpec);
}
}
if (tokens.length === initialLength) {
triggerErrorEvent(elt, "htmx:syntax:error", {token:tokens.shift()});
}
consumeUntil(tokens, NOT_WHITESPACE);
} while (tokens[0] === "," && tokens.shift())
}
if (triggerSpecs.length > 0) {
return triggerSpecs;
} else if (matches(elt, 'form')) {
return [{trigger: 'submit'}];
} else if (matches(elt, 'input, textarea, select')) {
return [{trigger: 'change'}];
} else {
return [{trigger: 'click'}];
}
}
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(verb, path, elt);
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, triggerSpecs) {
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');
}
triggerSpecs.forEach(function(triggerSpec) {
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 ignoreBoostedAnchorCtrlClick(elt, evt) {
return getInternalData(elt).boosted && elt.tagName === "A" && evt.type === "click" && evt.ctrlKey;
}
function maybeFilterEvent(triggerSpec, evt) {
var eventFilter = triggerSpec.eventFilter;
if(eventFilter){
try {
return eventFilter(evt) !== true;
} catch(e) {
triggerErrorEvent(getDocument().body, "htmx:eventFilter:error", {error: e, source:eventFilter.source});
return true;
}
}
return false;
}
function addEventListener(elt, verb, path, nodeData, triggerSpec, explicitCancel) {
var eltToListenOn = elt;
if (triggerSpec.from) {
eltToListenOn = find(triggerSpec.from);
}
var eventListener = function (evt) {
if (!bodyContains(elt)) {
eltToListenOn.removeEventListener(triggerSpec.trigger, eventListener);
return;
}
if (maybeFilterEvent(triggerSpec, evt)) {
return;
}
if (ignoreBoostedAnchorCtrlClick(elt, evt)) {
return;
}
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);
}
if (elementData.throttle) {
return;
}
if (triggerSpec.throttle) {
elementData.throttle = setTimeout(function(){
issueAjaxRequest(verb, path, elt, evt);
elementData.throttle = null;
}, triggerSpec.throttle);
} else if (triggerSpec.delay) {
elementData.delayed = setTimeout(function(){
issueAjaxRequest(verb, path, elt, evt);
}, triggerSpec.delay);
} else {
issueAjaxRequest(verb, path, elt, evt);
}
}
};
nodeData.trigger = triggerSpec.trigger;
nodeData.eventListener = eventListener;
eltToListenOn.addEventListener(triggerSpec.trigger, eventListener);
}
var windowIsScrolling = false // used by initScrollHandler
var scrollHandler = null;
function initScrollHandler() {
if (!scrollHandler) {
scrollHandler = function() {
windowIsScrolling = true
};
window.addEventListener("scroll", scrollHandler)
setInterval(function() {
if (windowIsScrolling) {
windowIsScrolling = false;
forEach(getDocument().querySelectorAll("[hx-trigger='revealed'],[data-hx-trigger='revealed']"), function (elt) {
maybeReveal(elt);
})
}
}, 200);
}
}
function maybeReveal(elt) {
var nodeData = getInternalData(elt);
if (!nodeData.revealed && isScrolledIntoView(elt)) {
nodeData.revealed = true;
issueAjaxRequest(nodeData.verb, nodeData.path, elt);
}
}
function processWebSocketInfo(elt, nodeData, info) {
var values = splitOnWhitespace(info);
for (var i = 0; i < values.length; i++) {
var value = values[i].split(/:(.+)/);
if (value[0] === "connect") {
processWebSocketSource(elt, value[1]);
}
if (value[0] === "send") {
processWebSocketSend(elt);
}
}
}
function processWebSocketSource(elt, wssSource) {
if (wssSource.indexOf("ws:") !== 0 && wssSource.indexOf("wss:") !== 0) {
wssSource = "wss:" + wssSource;
}
var socket = htmx.createWebSocket(wssSource);
socket.onerror = function (e) {
triggerErrorEvent(elt, "htmx:wsError", {error:e, socket:socket});
maybeCloseWebSocketSource(elt);
};
getInternalData(elt).webSocket = socket;
socket.addEventListener('message', function (event) {
if (maybeCloseWebSocketSource(elt)) {
return;
}
var response = event.data;
withExtensions(elt, function(extension){
response = extension.transformResponse(response, null, elt);
});
var settleInfo = makeSettleInfo(elt);
var fragment = makeFragment(response);
var children = toArray(fragment.children);
for (var i = 0; i < children.length; i++) {
var child = children[i];
oobSwap(getAttributeValue(child, "hx-swap-oob") || "true", child, settleInfo);
}
settleImmediately(settleInfo.tasks);
});
}
function maybeCloseWebSocketSource(elt) {
if (!bodyContains(elt)) {
getInternalData(elt).webSocket.close();
return true;
}
}
function processWebSocketSend(elt) {
var webSocketSourceElt = getClosestMatch(elt, function (parent) {
return getInternalData(parent).webSocket != null;
});
if (webSocketSourceElt) {
var webSocket = getInternalData(webSocketSourceElt).webSocket;
elt.addEventListener(getTriggerSpecs(elt)[0].trigger, function (evt) {
var headers = getHeaders(elt, webSocketSourceElt);
var results = getInputValues(elt, 'post');
var errors = results.errors;
var rawParameters = results.values;
var expressionVars = getExpressionVars(elt);
var allParameters = mergeObjects(rawParameters, expressionVars);
var filteredParameters = filterValues(allParameters, elt);
filteredParameters['HEADERS'] = headers;
if (errors && errors.length > 0) {
triggerEvent(elt, 'htmx:validation:halted', errors);
return;
}
webSocket.send(JSON.stringify(filteredParameters));
if(shouldCancel(elt)){
evt.preventDefault();
}
});
} else {
triggerErrorEvent(elt, "htmx:noWebSocketSourceError");
}
}
//====================================================================
// Server Sent Events
//====================================================================
function processSSEInfo(elt, nodeData, info) {
var values = splitOnWhitespace(info);
for (var i = 0; i < values.length; i++) {
var value = values[i].split(/:(.+)/);
if (value[0] === "connect") {
processSSESource(elt, value[1]);
}
if ((value[0] === "swap")) {
processSSESwap(elt, value[1])
}
}
}
function processSSESource(elt, sseSrc) {
var source = htmx.createEventSource(sseSrc);
source.onerror = function (e) {
triggerErrorEvent(elt, "htmx:sseError", {error:e, source:source});
maybeCloseSSESource(elt);
};
getInternalData(elt).sseEventSource = source;
}
function processSSESwap(elt, sseEventName) {
var sseSourceElt = getClosestMatch(elt, hasEventSource);
if (sseSourceElt) {
var sseEventSource = getInternalData(sseSourceElt).sseEventSource;
var sseListener = function (event) {
if (maybeCloseSSESource(sseSourceElt)) {
sseEventSource.removeEventListener(sseEventName, sseListener);
return;
}
///////////////////////////
// TODO: merge this code with AJAX and WebSockets code in the future.
var response = event.data;
withExtensions(elt, function(extension){
response = extension.transformResponse(response, null, elt);
});
var swapSpec = getSwapSpecification(elt)
var target = getTarget(elt)
var settleInfo = makeSettleInfo(elt);
selectAndSwap(swapSpec.swapStyle, elt, target, response, settleInfo)
triggerEvent(elt, "htmx:sseMessage", event)
};
getInternalData(elt).sseListener = sseListener;
sseEventSource.addEventListener(sseEventName, sseListener);
} else {
triggerErrorEvent(elt, "htmx:noSSESourceError");
}
}
function processSSETrigger(elt, verb, path, sseEventName) {
var sseSourceElt = getClosestMatch(elt, hasEventSource);
if (sseSourceElt) {
var sseEventSource = getInternalData(sseSourceElt).sseEventSource;
var sseListener = function () {
if (!maybeCloseSSESource(sseSourceElt)) {
if (bodyContains(elt)) {
issueAjaxRequest(verb, path, elt);
} else {
sseEventSource.removeEventListener(sseEventName, sseListener);
}
}
};
getInternalData(elt).sseListener = sseListener;
sseEventSource.addEventListener(sseEventName, sseListener);
} else {
triggerErrorEvent(elt, "htmx:noSSESourceError");
}
}
function maybeCloseSSESource(elt) {
if (!bodyContains(elt)) {
getInternalData(elt).sseEventSource.close();
return true;
}
}
function hasEventSource(node) {
return getInternalData(node).sseEventSource != null;
}
//====================================================================
function loadImmediately(elt, verb, path, nodeData, delay) {
var load = function(){
if (!nodeData.loaded) {
nodeData.loaded = true;
issueAjaxRequest(verb, path, elt);
}
}
if (delay) {
setTimeout(load, delay);
} else {
load();
}
}
function processVerbs(elt, nodeData, triggerSpecs) {
var explicitAction = false;
forEach(VERBS, function (verb) {
if (hasAttribute(elt,'hx-' + verb)) {
var path = getAttributeValue(elt, 'hx-' + verb);
explicitAction = true;
nodeData.path = path;
nodeData.verb = verb;
triggerSpecs.forEach(function(triggerSpec) {
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 evalScript(script) {
if (script.type === "text/javascript" || script.type === "") {
try {
maybeEval(script, function () {
Function(script.innerText)()
});
} catch (e) {
logError(e);
}
}
}
function processScripts(elt) {
if (matches(elt, "script")) {
evalScript(elt);
}
forEach(findAll(elt, "script"), function (script) {
evalScript(script);
});
}
function isBoosted() {
return document.querySelector("[hx-boost], [data-hx-boost]");
}
function findElementsToProcess(elt) {
if (elt.querySelectorAll) {
var boostedElts = isBoosted() ? ", a, form" : "";
var results = elt.querySelectorAll(VERB_SELECTOR + boostedElts + ", [hx-sse], [data-hx-sse], [hx-ws]," +
" [data-hx-ws]");
return results;
} else {
return [];
}
}
function initNode(elt) {
var nodeData = getInternalData(elt);
if (!nodeData.initialized) {
nodeData.initialized = true;
triggerEvent(elt, "htmx:beforeProcessNode")
if (elt.value) {
nodeData.lastValue = elt.value;
}
var triggerSpecs = getTriggerSpecs(elt);
var explicitAction = processVerbs(elt, nodeData, triggerSpecs);
if (!explicitAction && getClosestAttributeValue(elt, "hx-boost") === "true") {
boostElement(elt, nodeData, triggerSpecs);
}
var sseInfo = getAttributeValue(elt, 'hx-sse');
if (sseInfo) {
processSSEInfo(elt, nodeData, sseInfo);
}
var wsInfo = getAttributeValue(elt, 'hx-ws');
if (wsInfo) {
processWebSocketInfo(elt, nodeData, wsInfo);
}
triggerEvent(elt, "htmx:afterProcessNode");
}
}
function processNode(elt) {
elt = resolveTarget(elt);
initNode(elt);
forEach(findElementsToProcess(elt), function(child) { initNode(child) });
}
//====================================================================
// Event/Log Support
//====================================================================
function kebabEventName(str) {
return str.replace(/([a-z0-9])([A-Z])/g, '$1-$2').toLowerCase();
}
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({error:eventName}, detail));
}
function ignoreEventForLogging(eventName) {
return eventName === "htmx:afterProcessNode"
}
function withExtensions(elt, toDo) {
forEach(getExtensions(elt), function(extension){
try {
toDo(extension);
} catch (e) {
logError(e);
}
});
}
function logError(msg) {
if(console.error) {
console.error(msg);
} else if (console.log) {
console.log("ERROR: ", msg);
}
}
function triggerEvent(elt, eventName, detail) {
elt = resolveTarget(elt);
if (detail == null) {
detail = {};
}
detail["elt"] = elt;
var event = makeEvent(eventName, detail);
if (htmx.logger && !ignoreEventForLogging(eventName)) {
htmx.logger(elt, eventName, detail);
}
if (detail.error) {
logError(detail.error);
triggerEvent(elt, "htmx:error", {errorInfo:detail})
}
var eventResult = elt.dispatchEvent(event);
var kebabName = kebabEventName(eventName);
if (eventResult && kebabName !== eventName) {
var kebabedEvent = makeEvent(kebabName, event.detail);
eventResult = eventResult && elt.dispatchEvent(kebabedEvent)
}
withExtensions(elt, function (extension) {
eventResult = eventResult && (extension.onEvent(eventName, event) !== false)
});
return eventResult;
}
//====================================================================
// History Support
//====================================================================
var currentPathForHistory = null;
function getHistoryElement() {
var historyElt = getDocument().querySelector('[hx-history-elt],[data-hx-history-elt]');
return historyElt || getDocument().body;
}
function saveToHistoryCache(url, content, title, scroll) {
var historyCache = parseJSON(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();
}
try {
localStorage.setItem("htmx-history-cache", JSON.stringify(historyCache));
} catch (e) {
triggerErrorEvent(getDocument().body, "htmx:historyCacheError", {cause:e})
}
}
function getCachedHistory(url) {
var historyCache = parseJSON(localStorage.getItem("htmx-history-cache")) || [];
for (var i = 0; i < historyCache.length; i++) {
if (historyCache[i].url === url) {
return historyCache[i];
}
}
return null;
}
function cleanInnerHtmlForHistory(elt) {
var className = htmx.config.requestClass;
var clone = elt.cloneNode(true);
forEach(findAll(clone, "." + className), function(child){
removeClassFromElement(child, className);
});
return clone.innerHTML;
}
function saveHistory() {
var elt = getHistoryElement();
var path = currentPathForHistory || location.pathname+location.search;
triggerEvent(getDocument().body, "htmx:beforeHistorySave", {path:path, historyElt:elt});
if(htmx.config.historyEnabled) history.replaceState({htmx:true}, getDocument().title, window.location.href);
saveToHistoryCache(path, cleanInnerHtmlForHistory(elt), getDocument().title, window.scrollY);
}
function pushUrlIntoHistory(path) {
if(htmx.config.historyEnabled) history.pushState({htmx:true}, "", path);
currentPathForHistory = path;
}
function settleImmediately(tasks) {
forEach(tasks, function (task) {
task.call();
});
}
function loadHistoryFromServer(path) {
var request = new XMLHttpRequest();
var details = {path: path, xhr:request};
triggerEvent(getDocument().body, "htmx:historyCacheMiss", details);
request.open('GET', path, true);
request.onload = function () {
if (this.status >= 200 && this.status < 400) {
triggerEvent(getDocument().body, "htmx:historyCacheMissLoad", details);
var fragment = makeFragment(this.response);
fragment = fragment.querySelector('[hx-history-elt],[data-hx-history-elt]') || fragment;
var historyElement = getHistoryElement();
var settleInfo = makeSettleInfo(historyElement);
swapInnerHTML(historyElement, fragment, settleInfo)
settleImmediately(settleInfo.tasks);
currentPathForHistory = path;
} else {
triggerErrorEvent(getDocument().body, "htmx:historyCacheMissLoadError", details);
}
};
request.send();
}
function restoreHistory(path) {
saveHistory();
path = path || location.pathname+location.search;
triggerEvent(getDocument().body, "htmx:historyRestore", {path:path});
var cached = getCachedHistory(path);
if (cached) {
var fragment = makeFragment(cached.content);
var historyElement = getHistoryElement();
var settleInfo = makeSettleInfo(historyElement);
swapInnerHTML(historyElement, fragment, settleInfo)
settleImmediately(settleInfo.tasks);
document.title = cached.title;
window.scrollTo(0, cached.scroll);
currentPathForHistory = path;
} else {
loadHistoryFromServer(path);
}
}
function shouldPush(elt) {
var pushUrl = getClosestAttributeValue(elt, "hx-push-url");
return (pushUrl && pushUrl !== "false") ||
(elt.tagName === "A" && getInternalData(elt).boosted);
}
function getPushUrl(elt) {
var pushUrl = getClosestAttributeValue(elt, "hx-push-url");
return (pushUrl === "true" || pushUrl === "false") ? null : pushUrl;
}
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;
if (indicator.indexOf("closest ") === 0) {
indicators = [closest(elt, indicator.substr(8))];
} else {
indicators = getDocument().querySelectorAll(indicator);
}
} else {
indicators = [elt];
}
forEach(indicators, function(ic) {
ic.classList[action].call(ic.classList, htmx.config.requestClass);
});
}
//====================================================================
// 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, errors, elt, validate) {
if (elt == null || haveSeenNode(processed, elt)) {
return;
} else {
processed.push(elt);
}
if (shouldInclude(elt)) {
var name = getRawAttribute(elt,"name");
var value = elt.value;
if (elt.multiple) {
value = toArray(elt.querySelectorAll("option:checked")).map(function (e) { return e.value });
}
// include file inputs
if (elt.files) {
value = toArray(elt.files);
}
// This is a little ugly because both the current value of the named value in the form
// and the new value could be arrays, so we have to handle all four cases :/
if (name != null && value != null) {
var current = values[name];
if(current) {
if (Array.isArray(current)) {
if (Array.isArray(value)) {
values[name] = current.concat(value);
} else {
current.push(value);
}
} else {
if (Array.isArray(value)) {
values[name] = [current].concat(value);
} else {
values[name] = [current, value];
}
}
} else {
values[name] = value;
}
}
if (validate) {
validateElement(elt, errors);
}
}
if (matches(elt, 'form')) {
var inputs = elt.elements;
forEach(inputs, function(input) {
processInputValue(processed, values, errors, input, validate);
});
}
}
function validateElement(element, errors) {
if (element.willValidate) {
triggerEvent(element, "htmx:validation:validate")
if (!element.checkValidity()) {
errors.push({elt: element, message:element.validationMessage, validity:element.validity});
triggerEvent(element, "htmx:validation:failed", {message:element.validationMessage, validity:element.validity})
}
}
}
function getInputValues(elt, verb) {
var processed = [];
var values = {
form: {},
element: {},
includes: {},
};
var errors = [];
// only validate when form is directly submitted and novalidate is not set
var validate = matches(elt, 'form') && elt.noValidate !== true;
// for a non-GET include the closest form
if (verb !== 'get') {
processInputValue(processed, values.form, errors, closest(elt, 'form'), validate);
}
// include the element itself
processInputValue(processed, values.element, errors, elt, validate);
// include any explicit includes
var includes = getClosestAttributeValue(elt, "hx-include");
if (includes) {
var nodes = getDocument().querySelectorAll(includes);
forEach(nodes, function(node) {
processInputValue(processed, values.includes, errors, node, validate);
});
}
var mergedValues = mergeObjects(values.includes, values.element);
mergedValues = mergeObjects(mergedValues, values.form);
return {errors:errors, values:mergedValues};
}
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;
}
function makeFormData(values) {
var formData = new FormData();
for (var name in values) {
if (values.hasOwnProperty(name)) {
var value = values[name];
if (Array.isArray(value)) {
forEach(value, function(v) {
formData.append(name, v);
});
} else {
formData.append(name, value);
}
}
}
return formData;
}
//====================================================================
// Ajax
//====================================================================
function getHeaders(elt, target, prompt) {
var headers = {
"HX-Request" : "true",
"HX-Trigger" : getRawAttribute(elt, "id"),
"HX-Trigger-Name" : getRawAttribute(elt, "name"),
"HX-Target" : getAttributeValue(target, "id"),
"HX-Current-URL" : getDocument().location.href,
}
if (prompt !== undefined) {
headers["HX-Prompt"] = prompt;
}
return headers;
}
function filterValues(inputValues, elt) {
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));
}
if (modifier.indexOf("scroll:") === 0) {
swapSpec["scroll"] = modifier.substr(7);
}
if (modifier.indexOf("show:") === 0) {
swapSpec["show"] = modifier.substr(5);
}
}
}
}
return swapSpec;
}
function encodeParamsForBody(xhr, elt, filteredParameters) {
var encodedParameters = null;
withExtensions(elt, function (extension) {
if (encodedParameters == null) {
encodedParameters = extension.encodeParameters(xhr, filteredParameters, elt);
}
});
if (encodedParameters != null) {
return encodedParameters;
} else {
if (getClosestAttributeValue(elt, "hx-encoding") === "multipart/form-data") {
return makeFormData(filteredParameters);
} else {
return urlEncode(filteredParameters);
}
}
}
function makeSettleInfo(target) {
return {tasks: [], elts: [target]};
}
function updateScrollState(target, altContent, swapSpec) {
if (swapSpec.scroll) {
if (swapSpec.scroll === "top") {
target.scrollTop = 0;
}
if (swapSpec.scroll === "bottom") {
target.scrollTop = target.scrollHeight;
}
}
if (swapSpec.show) {
if (swapSpec.show === "top") {
target.scrollIntoView(true);
}
if (swapSpec.show === "bottom") {
target.scrollIntoView(false);
}
}
}
function getValuesForElement(elt, attr, strToValues, expressionVars) {
if (expressionVars == null) {
expressionVars = {};
}
if (elt == null) {
return expressionVars;
}
var attributeValue = getAttributeValue(elt, attr);
if (attributeValue) {
var str = attributeValue.trim();
if (str.indexOf('{') !== 0) {
str = "{" + str + "}";
}
var varsValues = strToValues(str);
for (var key in varsValues) {
if (varsValues.hasOwnProperty(key)) {
if (expressionVars[key] == null) {
expressionVars[key] = varsValues[key];
}
}
}
}
return getValuesForElement(parentElt(elt), attr, strToValues, expressionVars);
}
function maybeEval(elt, toEval, defaultVal) {
if (htmx.config.allowEval) {
return toEval();
} else {
triggerErrorEvent(elt, 'htmx:evalDisallowedError');
return defaultVal;
}
}
function getHXVarsForElement(elt, expressionVars) {
return getValuesForElement(elt, "hx-vars", function(valueStr){
return maybeEval(elt,function () {return Function("return (" + valueStr + ")")();}, {});
}, expressionVars);
}
function getHXValsForElement(elt, expressionVars) {
return getValuesForElement(elt, "hx-vals", function(valueStr){
return parseJSON(valueStr);
}, expressionVars);
}
function getExpressionVars(elt) {
return mergeObjects(getHXVarsForElement(elt), getHXValsForElement(elt));
}
function safelySetHeaderValue(xhr, header, headerValue) {
if (headerValue !== null) {
try {
xhr.setRequestHeader(header, headerValue);
} catch (e) {
// On an exception, try to set the header URI encoded instead
xhr.setRequestHeader(header, encodeURIComponent(headerValue));
xhr.setRequestHeader(header + "-URI-AutoEncoded", "true");
}
}
}
function getResponseURL(xhr) {
// NB: IE11 does not support this stuff
if (xhr.responseURL && typeof(URL) !== "undefined") {
try {
var url = new URL(xhr.responseURL);
return url.pathname + url.search;
} catch (e) {
triggerErrorEvent(getDocument().body, "htmx:badResponseUrl", {url: xhr.responseURL});
}
}
}
function hasHeader(xhr, regexp) {
return xhr.getAllResponseHeaders().match(regexp);
}
function ajaxHelper(verb, path, context) {
if (context) {
if (context instanceof Element || isType(context, 'String')) {
issueAjaxRequest(verb, path, null, null, null, resolveTarget(context));
} else {
issueAjaxRequest(verb, path, resolveTarget(context.source), context.event, context.handler, resolveTarget(context.target));
}
} else {
issueAjaxRequest(verb, path);
}
}
function issueAjaxRequest(verb, path, elt, event, responseHandler, targetOverride) {
if(elt == null) {
elt = getDocument().body;
}
if (responseHandler == null) {
responseHandler = handleAjaxResponse;
}
if (!bodyContains(elt)) {
return; // do not issue requests for elements removed from the DOM
}
var target = targetOverride || getTarget(elt);
if (target == null) {
triggerErrorEvent(elt, 'htmx:targetError', {target: getAttributeValue(elt, "hx-target")});
return;
}
var eltData = getInternalData(elt);
if (eltData.requestInFlight) {
eltData.queuedRequest = function(){
issueAjaxRequest(verb, path, elt, event)
};
return;
} else {
eltData.requestInFlight = true;
}
var endRequestLock = function(){
eltData.requestInFlight = false
var queuedRequest = eltData.queuedRequest;
eltData.queuedRequest = null;
if (queuedRequest) {
queuedRequest();
}
}
var promptQuestion = getClosestAttributeValue(elt, "hx-prompt");
if (promptQuestion) {
var promptResponse = prompt(promptQuestion);
// prompt returns null if cancelled and empty string if accepted with no entry
if (promptResponse === null ||
!triggerEvent(elt, 'htmx:prompt', {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);
var results = getInputValues(elt, verb);
var errors = results.errors;
var rawParameters = results.values;
var expressionVars = getExpressionVars(elt);
var allParameters = mergeObjects(rawParameters, expressionVars);
var filteredParameters = filterValues(allParameters, elt);
if (verb !== 'get' && getClosestAttributeValue(elt, "hx-encoding") == null) {
headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
}
// behavior of anchors w/ empty href is to use the current URL
if (path == null || path === "") {
path = getDocument().location.href;
}
var requestConfig = {
parameters: filteredParameters,
unfilteredParameters: allParameters,
headers:headers,
target:target,
verb:verb,
errors:errors,
path:path,
triggeringEvent:event
};
if(!triggerEvent(elt, 'htmx:configRequest', requestConfig)) return endRequestLock();
// copy out in case the object was overwritten
path = requestConfig.path;
verb = requestConfig.verb;
headers = requestConfig.headers;
filteredParameters = requestConfig.parameters;
errors = requestConfig.errors;
if(errors && errors.length > 0){
triggerEvent(elt, 'htmx:validation:halted', requestConfig)
return endRequestLock();
}
var splitPath = path.split("#");
var pathNoAnchor = splitPath[0];
var anchor = splitPath[1];
if (verb === 'get') {
var finalPathForGet = pathNoAnchor;
var values = Object.keys(filteredParameters).length !== 0;
if (values) {
if (finalPathForGet.indexOf("?") < 0) {
finalPathForGet += "?";
} else {
finalPathForGet += "&";
}
finalPathForGet += urlEncode(filteredParameters);
if (anchor) {
finalPathForGet += "#" + anchor;
}
}
xhr.open('GET', finalPathForGet, true);
} else {
xhr.open(verb.toUpperCase(), path, true);
}
xhr.overrideMimeType("text/html");
// request headers
for (var header in headers) {
if (headers.hasOwnProperty(header)) {
var headerValue = headers[header];
safelySetHeaderValue(xhr, header, headerValue);
}
}
var responseInfo = {xhr: xhr, target: target, requestConfig: requestConfig, pathInfo:{
path:path, finalPath:finalPathForGet, anchor:anchor
}
};
xhr.onload = function () {
try {
responseHandler(elt, responseInfo);
} catch (e) {
triggerErrorEvent(elt, 'htmx:onLoadError', mergeObjects({error:e}, responseInfo));
throw e;
} finally {
removeRequestIndicatorClasses(elt);
var finalElt = getInternalData(elt).replacedWith || elt;
triggerEvent(finalElt, 'htmx:afterRequest', responseInfo);
triggerEvent(finalElt, 'htmx:afterOnLoad', responseInfo);
endRequestLock();
}
}
xhr.onerror = function () {
removeRequestIndicatorClasses(elt);
triggerErrorEvent(elt, 'htmx:afterRequest', responseInfo);
triggerErrorEvent(elt, 'htmx:sendError', responseInfo);
endRequestLock();
}
xhr.onabort = function() {
removeRequestIndicatorClasses(elt);
endRequestLock();
}
if(!triggerEvent(elt, 'htmx:beforeRequest', responseInfo)) return endRequestLock();
addRequestIndicatorClasses(elt);
forEach(['loadstart', 'loadend', 'progress', 'abort'], function(eventName) {
forEach([xhr, xhr.upload], function (target) {
target.addEventListener(eventName, function(event){
triggerEvent(elt, "htmx:xhr:" + eventName, {
lengthComputable:event.lengthComputable,
loaded:event.loaded,
total:event.total
});
})
});
});
xhr.send(verb === 'get' ? null : encodeParamsForBody(xhr, elt, filteredParameters));
}
function handleAjaxResponse(elt, responseInfo) {
var xhr = responseInfo.xhr;
var target = responseInfo.target;
if (!triggerEvent(elt, 'htmx:beforeOnLoad', responseInfo)) return;
if (hasHeader(xhr, /HX-Trigger:/i)) {
handleTrigger(xhr, "HX-Trigger", elt);
}
if (hasHeader(xhr,/HX-Push:/i)) {
var pushedUrl = xhr.getResponseHeader("HX-Push");
}
if (hasHeader(xhr, /HX-Redirect:/i)) {
window.location.href = xhr.getResponseHeader("HX-Redirect");
return;
}
if (hasHeader(xhr,/HX-Refresh:/i)) {
if ("true" === xhr.getResponseHeader("HX-Refresh")) {
location.reload();
return;
}
}
var shouldSaveHistory = shouldPush(elt) || pushedUrl;
if (xhr.status >= 200 && xhr.status < 400) {
if (xhr.status === 286) {
cancelPolling(elt);
}
// don't process 'No Content'
if (xhr.status !== 204) {
if (!triggerEvent(target, 'htmx:beforeSwap', responseInfo)) return;
var serverResponse = xhr.response;
withExtensions(elt, function(extension){
serverResponse = extension.transformResponse(serverResponse, xhr, elt);
});
// Save current page
if (shouldSaveHistory) {
saveHistory();
}
var swapSpec = getSwapSpecification(elt);
target.classList.add(htmx.config.swappingClass);
var doSwap = function () {
try {
var activeElt = document.activeElement;
var selectionInfo = {
elt: activeElt,
start: activeElt ? activeElt.selectionStart : null,
end: activeElt ? activeElt.selectionEnd : null
};
var settleInfo = makeSettleInfo(target);
selectAndSwap(swapSpec.swapStyle, target, elt, serverResponse, settleInfo);
if (selectionInfo.elt &&
!bodyContains(selectionInfo.elt) &&
selectionInfo.elt.id) {
var newActiveElt = document.getElementById(selectionInfo.elt.id);
if (newActiveElt) {
if (selectionInfo.start && newActiveElt.setSelectionRange) {
newActiveElt.setSelectionRange(selectionInfo.start, selectionInfo.end);
}
newActiveElt.focus();
}
}
target.classList.remove(htmx.config.swappingClass);
forEach(settleInfo.elts, function (elt) {
if (elt.classList) {
elt.classList.add(htmx.config.settlingClass);
}
triggerEvent(elt, 'htmx:afterSwap', responseInfo);
});
if (responseInfo.pathInfo.anchor) {
location.hash = responseInfo.pathInfo.anchor;
}
if (hasHeader(xhr, /HX-Trigger-After-Swap:/i)) {
handleTrigger(xhr, "HX-Trigger-After-Swap", elt);
}
var doSettle = function(){
forEach(settleInfo.tasks, function (task) {
task.call();
});
forEach(settleInfo.elts, function (elt) {
if (elt.classList) {
elt.classList.remove(htmx.config.settlingClass);
}
triggerEvent(elt, 'htmx:afterSettle', responseInfo);
});
// push URL and save new page
if (shouldSaveHistory) {
var pathToPush = pushedUrl || getPushUrl(elt) || getResponseURL(xhr) || responseInfo.pathInfo.finalPath || responseInfo.pathInfo.path;
pushUrlIntoHistory(pathToPush);
triggerEvent(getDocument().body, 'htmx:pushedIntoHistory', {path:pathToPush});
}
updateScrollState(target, settleInfo.elts, swapSpec);
if (hasHeader(xhr, /HX-Trigger-After-Settle:/i)) {
handleTrigger(xhr, "HX-Trigger-After-Settle", elt);
}
}
if (swapSpec.settleDelay > 0) {
setTimeout(doSettle, swapSpec.settleDelay)
} else {
doSettle();
}
} catch (e) {
triggerErrorEvent(elt, 'htmx:swapError', responseInfo);
throw e;
}
};
if (swapSpec.swapDelay > 0) {
setTimeout(doSwap, swapSpec.swapDelay)
} else {
doSwap();
}
}
} else {
triggerErrorEvent(elt, 'htmx:responseError', mergeObjects({error: "Response Status Error Code " + xhr.status + " from " + responseInfo.pathInfo.path}, responseInfo));
}
}
//====================================================================
// Extensions API
//====================================================================
var extensions = {};
function extensionBase() {
return {
onEvent : function(name, evt) {return true;},
transformResponse : function(text, xhr, elt) {return text;},
isInlineSwap : function(swapStyle) {return false;},
handleSwap : function(swapStyle, target, fragment, settleInfo) {return false;},
encodeParameters : function(xhr, parameters, elt) {return null;}
}
}
function defineExtension(name, extension) {
extensions[name] = mergeObjects(extensionBase(), extension);
}
function removeExtension(name) {
delete extensions[name];
}
function getExtensions(elt, extensionsToReturn, extensionsToIgnore) {
if (elt == undefined) {
return extensionsToReturn;
}
if (extensionsToReturn == undefined) {
extensionsToReturn = [];
}
if (extensionsToIgnore == undefined) {
extensionsToIgnore = [];
}
var extensionsForElement = getAttributeValue(elt, "hx-ext");
if (extensionsForElement) {
forEach(extensionsForElement.split(","), function(extensionName){
extensionName = extensionName.replace(/ /g, '');
if (extensionName.slice(0, 7) == "ignore:") {
extensionsToIgnore.push(extensionName.slice(7));
return;
}
if (extensionsToIgnore.indexOf(extensionName) < 0) {
var extension = extensions[extensionName];
if (extension && extensionsToReturn.indexOf(extension) < 0) {
extensionsToReturn.push(extension);
}
}
});
}
return getExtensions(parentElt(elt), extensionsToReturn, extensionsToIgnore);
}
//====================================================================
// Initialization
//====================================================================
function ready(fn) {
if (getDocument().readyState !== 'loading') {
fn();
} else {
getDocument().addEventListener('DOMContentLoaded', fn);
}
}
function insertIndicatorStyles() {
if (htmx.config.includeIndicatorStyles !== false) {
getDocument().head.insertAdjacentHTML("beforeend",
"");
}
}
function getMetaConfig() {
var element = getDocument().querySelector('meta[name="htmx-config"]');
if (element) {
return parseJSON(element.content);
} else {
return null;
}
}
function mergeMetaConfig() {
var metaConfig = getMetaConfig();
if (metaConfig) {
htmx.config = mergeObjects(htmx.config , metaConfig)
}
}
// initialize the document
ready(function () {
mergeMetaConfig();
insertIndicatorStyles();
var body = getDocument().body;
processNode(body);
window.onpopstate = function (event) {
if (event.state && event.state.htmx) {
restoreHistory();
}
};
setTimeout(function () {
triggerEvent(body, 'htmx:load', {}); // give ready handlers a chance to load up before firing this event
}, 0);
})
return htmx;
}
)()
}));