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@airstruck
Last active August 30, 2015 02:16
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// Test it on https://love2d.org/wiki/love.thread.newThread
// TODO: dl notes: https://love2d.org/wiki/GraphicsFeature
// TODO: box notes: https://love2d.org/wiki/love.event.push
var picker = document.createElement('select')
picker.onchange = function () {
applyFilter(this.options[this.selectedIndex].value)
}
function array (a) {
return [].slice.apply(a || [])
}
var pickerVersions = {}
function injectPickerOption (version, text) {
if (pickerVersions[version]) {
return
}
pickerVersions[version] = true
var option = document.createElement('option')
option.value = version
option.textContent = text
picker.appendChild(option)
}
function makeWrapper () {
var wrapper = document.createElement('div')
wrapper.setAttribute('data-love-filterable', true)
return wrapper
}
function wrapSections () {
var element = document.querySelector('h2')
var wrapper
while (element) {
var next = element.nextSibling
if (element.nodeName == 'H2') {
wrapper = makeWrapper()
element.parentNode.insertBefore(wrapper, element)
}
wrapper.appendChild(element)
element = next
}
}
function updateSectionFromNote (section, note) {
if (note.textContent.match(/available since/i)) {
var a = note.querySelector('a')
section.setAttribute('data-love-version-added', a.title)
note.setAttribute('data-love-version-note', true)
}
if (note.textContent.match(/removed in/i)) {
var a = note.querySelector('a')
section.setAttribute('data-love-version-removed', a.title)
note.setAttribute('data-love-version-note', true)
}
}
function QueryIterator (query) {
return function (callback) {
return array(document.querySelectorAll(query)).forEach(callback)
}
}
var withSections = QueryIterator('*[data-love-filterable]')
var withAdded = QueryIterator('*[data-love-version-added]')
var withRemoved = QueryIterator('*[data-love-version-removed]')
var withNotes = QueryIterator('*[data-love-version-note]')
function hideNotes () {
withNotes(function (note) { note.style.display = 'none' })
}
function showNotes () {
withNotes(function (note) { note.style.display = null })
}
var needsFilter = false
function scanSections () {
withSections(function (section) {
var note = section.querySelector('table')
if (!note) {
return
}
updateSectionFromNote(section, note)
while (note.nextSibling && note.nextSibling.tagName == 'TABLE') {
note = note.nextSibling
updateSectionFromNote(section, note)
}
needsFilter = true
})
}
function scanTables () {
var added = document.querySelectorAll('.smwtable *[alt="Added since"] + *')
var removed = document.querySelectorAll('.smwtable *[alt="Removed in"] + *')
array(added).forEach(function (a) {
var e = a.parentNode.parentNode
e.setAttribute('data-love-filterable', true)
e.setAttribute('data-love-version-added', a.title)
needsFilter = true
})
array(removed).forEach(function (a) {
var e = a.parentNode.parentNode
e.setAttribute('data-love-filterable', true)
e.setAttribute('data-love-version-removed', a.title)
needsFilter = true
})
}
// return true if 'installed' is greater than or equal to 'required'
// http://stackoverflow.com/a/6832670
function compareVersions (installed, required) {
var a = installed.split('.');
var b = required.split('.');
for (var i = 0; i < a.length; ++i) {
a[i] = Number(a[i]);
}
for (var i = 0; i < b.length; ++i) {
b[i] = Number(b[i]);
}
if (a.length == 2) {
a[2] = 0;
}
if (a[0] > b[0]) return true;
if (a[0] < b[0]) return false;
if (a[1] > b[1]) return true;
if (a[1] < b[1]) return false;
if (a[2] > b[2]) return true;
if (a[2] < b[2]) return false;
return true;
}
function filterVersion (installed) {
filterAll(hideNotes)
withAdded(function (section) {
var required = section.getAttribute('data-love-version-added')
if (!compareVersions(installed, required)) {
section.style.display = 'none'
}
})
withRemoved(function (section) {
var removed = section.getAttribute('data-love-version-removed')
if (compareVersions (installed, removed)) {
section.style.display = 'none'
}
})
}
function filterAll (hideOrShowNotes) {
hideOrShowNotes()
withSections(function (section) { section.style.display = null })
}
function filterLatest () {
filterAll(hideNotes)
withRemoved(function (section) { section.style.display = 'none' })
}
function applyFilter (value) {
if (value == 'all') {
filterAll(showNotes)
return
}
if (value == 'latest') {
filterLatest()
return
}
filterVersion(value)
}
function injectFilterPicker () {
var target = document.getElementById('ca-nstab-main').parentNode
picker.style.position = 'absolute'
picker.style.right = 0
picker.style.height = target.parentNode.offsetHeight - 8 + 'px'
picker.style.margin = '4px'
target.parentNode.insertBefore(picker, target)
}
function injectVersionTag (number, name) {
injectPickerOption(number, 'Version ' + number + ': ' + name)
}
function injectVersionTags () {
var url = '/w/index.php?title=Version_History&action=raw';
var xhr = new XMLHttpRequest()
xhr.onload = function () {
var re = /\[\[([\d.]+)\]\][^\n]*\n[^\|]*\|(.*)\n/gm
var m
while (m = re.exec(this.responseText)) {
injectVersionTag(m[1], m[2])
}
}
xhr.open('get', url, true)
xhr.send()
}
function main () {
wrapSections()
scanSections()
scanTables()
if (!needsFilter) {
return
}
injectPickerOption('all', 'All Versions')
injectPickerOption('latest', 'Latest Version')
injectVersionTags()
injectFilterPicker()
}
main()
{
"name": "LÖVE wiki version filter",
"version": "1",
"manifest_version": 2,
"content_scripts": [{
"js": ["lovewiki.js"],
"matches": ["https://love2d.org/wiki/*"]
}]
}
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