krontab/scripts/platform-content-handler.js

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filteringContext = {
dependencies: {},
restrictedDependencies: [],
activeFilters: []
}
let highlightedAnchor;
let topNavbarOffset;
let instances = [];
let sourcesetNotification;
const samplesDarkThemeName = 'darcula'
const samplesLightThemeName = 'idea'
window.addEventListener('load', () => {
document.querySelectorAll("div[data-platform-hinted]")
.forEach(elem => elem.addEventListener('click', (event) => togglePlatformDependent(event, elem)))
document.querySelectorAll("div[tabs-section]")
.forEach(elem => elem.addEventListener('click', (event) => toggleSectionsEventHandler(event)))
const filterSection = document.getElementById('filter-section')
if (filterSection) {
filterSection.addEventListener('click', (event) => filterButtonHandler(event))
initializeFiltering()
}
initTabs()
handleAnchor()
initHidingLeftNavigation()
topNavbarOffset = document.getElementById('navigation-wrapper')
darkModeSwitch()
})
const darkModeSwitch = () => {
const localStorageKey = "dokka-dark-mode"
const storage = localStorage.getItem(localStorageKey)
const osDarkSchemePreferred = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
const darkModeEnabled = storage ? JSON.parse(storage) : osDarkSchemePreferred
const element = document.getElementById("theme-toggle-button")
initPlayground(darkModeEnabled ? samplesDarkThemeName : samplesLightThemeName)
element.addEventListener('click', () => {
const enabledClasses = document.getElementsByTagName("html")[0].classList
enabledClasses.toggle("theme-dark")
//if previously we had saved dark theme then we set it to light as this is what we save in local storage
const darkModeEnabled = enabledClasses.contains("theme-dark")
if (darkModeEnabled) {
initPlayground(samplesDarkThemeName)
} else {
initPlayground(samplesLightThemeName)
}
localStorage.setItem(localStorageKey, JSON.stringify(darkModeEnabled))
})
}
const initPlayground = (theme) => {
if (!samplesAreEnabled()) return
instances.forEach(instance => instance.destroy())
instances = []
// Manually tag code fragments as not processed by playground since we also manually destroy all of its instances
document.querySelectorAll('code.runnablesample').forEach(node => {
node.removeAttribute("data-kotlin-playground-initialized");
})
KotlinPlayground('code.runnablesample', {
getInstance: playgroundInstance => {
instances.push(playgroundInstance)
},
theme: theme
});
}
// We check if type is accessible from the current scope to determine if samples script is present
// As an alternative we could extract this samples-specific script to new js file but then we would handle dark mode in 2 separate files which is not ideal
const samplesAreEnabled = () => {
try {
KotlinPlayground
return true
} catch (e) {
return false
}
}
const initHidingLeftNavigation = () => {
document.getElementById("leftToggler").onclick = function (event) {
//Events need to be prevented from bubbling since they will trigger next handler
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
document.getElementById("leftColumn").classList.toggle("open");
}
document.getElementById("main").onclick = () => {
document.getElementById("leftColumn").classList.remove("open");
}
}
// Hash change is needed in order to allow for linking inside the same page with anchors
// If this is not present user is forced to refresh the site in order to use an anchor
window.onhashchange = handleAnchor
function scrollToElementInContent(element) {
const scrollToElement = () => document.getElementById('main').scrollTo({
top: element.offsetTop - topNavbarOffset.offsetHeight,
behavior: "smooth"
})
const waitAndScroll = () => {
setTimeout(() => {
if (topNavbarOffset) {
scrollToElement()
} else {
waitForScroll()
}
}, 50)
}
if (topNavbarOffset) {
scrollToElement()
} else {
waitAndScroll()
}
}
function handleAnchor() {
if (highlightedAnchor) {
highlightedAnchor.classList.remove('anchor-highlight')
highlightedAnchor = null;
}
let searchForContentTarget = function (element) {
if (element && element.hasAttribute) {
if (element.hasAttribute("data-togglable")) return element.getAttribute("data-togglable");
else return searchForContentTarget(element.parentNode)
} else return null
}
let findAnyTab = function (target) {
let result = null
document.querySelectorAll('div[tabs-section] > button[data-togglable]')
.forEach(node => {
if(node.getAttribute("data-togglable").split(",").includes(target)) {
result = node
}
})
return result
}
let anchor = window.location.hash
if (anchor != "") {
anchor = anchor.substring(1)
let element = document.querySelector('a[data-name="' + anchor + '"]')
if (element) {
const content = element.nextElementSibling
const contentStyle = window.getComputedStyle(content)
if(contentStyle.display == 'none') {
let tab = findAnyTab(searchForContentTarget(content))
if (tab) {
toggleSections(tab)
}
}
if (content) {
content.classList.add('anchor-highlight')
highlightedAnchor = content
}
scrollToElementInContent(element)
}
}
}
function initTabs() {
document.querySelectorAll("div[tabs-section]")
.forEach(element => {
showCorrespondingTabBody(element)
element.addEventListener('click', (event) => toggleSectionsEventHandler(event))
})
let cached = localStorage.getItem("active-tab")
if (cached) {
let parsed = JSON.parse(cached)
let tab = document.querySelector('div[tabs-section] > button[data-togglable="' + parsed + '"]')
if (tab) {
toggleSections(tab)
}
}
}
function showCorrespondingTabBody(element) {
const buttonWithKey = element.querySelector("button[data-active]")
if (buttonWithKey) {
toggleSections(buttonWithKey)
}
}
function filterButtonHandler(event) {
if (event.target.tagName == "BUTTON" && event.target.hasAttribute("data-filter")) {
let sourceset = event.target.getAttribute("data-filter")
if (filteringContext.activeFilters.indexOf(sourceset) != -1) {
filterSourceset(sourceset)
} else {
unfilterSourceset(sourceset)
}
}
}
function initializeFiltering() {
filteringContext.dependencies = JSON.parse(sourceset_dependencies)
document.querySelectorAll("#filter-section > button")
.forEach(p => filteringContext.restrictedDependencies.push(p.getAttribute("data-filter")))
Object.keys(filteringContext.dependencies).forEach(p => {
filteringContext.dependencies[p] = filteringContext.dependencies[p]
.filter(q => -1 !== filteringContext.restrictedDependencies.indexOf(q))
})
let cached = window.localStorage.getItem('inactive-filters')
if (cached) {
let parsed = JSON.parse(cached)
filteringContext.activeFilters = filteringContext.restrictedDependencies
.filter(q => parsed.indexOf(q) == -1)
} else {
filteringContext.activeFilters = filteringContext.restrictedDependencies
}
refreshFiltering()
}
function filterSourceset(sourceset) {
filteringContext.activeFilters = filteringContext.activeFilters.filter(p => p != sourceset)
refreshFiltering()
addSourcesetFilterToCache(sourceset)
}
function unfilterSourceset(sourceset) {
if (filteringContext.activeFilters.length == 0) {
filteringContext.activeFilters = filteringContext.dependencies[sourceset].concat([sourceset])
refreshFiltering()
filteringContext.dependencies[sourceset].concat([sourceset]).forEach(p => removeSourcesetFilterFromCache(p))
} else {
filteringContext.activeFilters.push(sourceset)
refreshFiltering()
removeSourcesetFilterFromCache(sourceset)
}
}
function addSourcesetFilterToCache(sourceset) {
let cached = localStorage.getItem('inactive-filters')
if (cached) {
let parsed = JSON.parse(cached)
localStorage.setItem('inactive-filters', JSON.stringify(parsed.concat([sourceset])))
} else {
localStorage.setItem('inactive-filters', JSON.stringify([sourceset]))
}
}
function removeSourcesetFilterFromCache(sourceset) {
let cached = localStorage.getItem('inactive-filters')
if (cached) {
let parsed = JSON.parse(cached)
localStorage.setItem('inactive-filters', JSON.stringify(parsed.filter(p => p != sourceset)))
}
}
function toggleSections(target) {
const activateTabs = (containerClass) => {
for (const element of document.getElementsByClassName(containerClass)) {
for (const child of element.children) {
if (child.getAttribute("data-togglable") === target.getAttribute("data-togglable")) {
child.setAttribute("data-active", "")
} else {
child.removeAttribute("data-active")
}
}
}
}
const toggleTargets = target.getAttribute("data-togglable").split(",")
const activateTabsBody = (containerClass) => {
document.querySelectorAll("." + containerClass + " *[data-togglable]")
.forEach(child => {
if (toggleTargets.includes(child.getAttribute("data-togglable"))) {
child.setAttribute("data-active", "")
} else if(!child.classList.contains("sourceset-dependent-content")) { // data-togglable is used to switch source set as well, ignore it
child.removeAttribute("data-active")
}
})
}
activateTabs("tabs-section")
activateTabsBody("tabs-section-body")
}
function toggleSectionsEventHandler(evt) {
if (!evt.target.getAttribute("data-togglable")) return
localStorage.setItem('active-tab', JSON.stringify(evt.target.getAttribute("data-togglable")))
toggleSections(evt.target)
}
function togglePlatformDependent(e, container) {
let target = e.target
if (target.tagName != 'BUTTON') return;
let index = target.getAttribute('data-toggle')
for (let child of container.children) {
if (child.hasAttribute('data-toggle-list')) {
for (let bm of child.children) {
if (bm == target) {
bm.setAttribute('data-active', "")
} else if (bm != target) {
bm.removeAttribute('data-active')
}
}
} else if (child.getAttribute('data-togglable') == index) {
child.setAttribute('data-active', "")
} else {
child.removeAttribute('data-active')
}
}
}
function refreshFiltering() {
let sourcesetList = filteringContext.activeFilters
document.querySelectorAll("[data-filterable-set]")
.forEach(
elem => {
let platformList = elem.getAttribute("data-filterable-set").split(' ').filter(v => -1 !== sourcesetList.indexOf(v))
elem.setAttribute("data-filterable-current", platformList.join(' '))
}
)
refreshFilterButtons()
refreshPlatformTabs()
refreshNoContentNotification()
}
function refreshNoContentNotification() {
const element = document.getElementsByClassName("main-content")[0]
if(filteringContext.activeFilters.length === 0){
element.style.display = "none";
const appended = document.createElement("div")
appended.className = "filtered-message"
appended.innerText = "All documentation is filtered, please adjust your source set filters in top-right corner of the screen"
sourcesetNotification = appended
element.parentNode.prepend(appended)
} else {
if(sourcesetNotification) sourcesetNotification.remove()
element.style.display = "block"
}
}
function refreshPlatformTabs() {
document.querySelectorAll(".platform-hinted > .platform-bookmarks-row").forEach(
p => {
let active = false;
let firstAvailable = null
p.childNodes.forEach(
element => {
if (element.getAttribute("data-filterable-current") != '') {
if (firstAvailable == null) {
firstAvailable = element
}
if (element.hasAttribute("data-active")) {
active = true;
}
}
}
)
if (active == false && firstAvailable) {
firstAvailable.click()
}
}
)
}
function refreshFilterButtons() {
document.querySelectorAll("#filter-section > button")
.forEach(f => {
if (filteringContext.activeFilters.indexOf(f.getAttribute("data-filter")) != -1) {
f.setAttribute("data-active", "")
} else {
f.removeAttribute("data-active")
}
})
}