PWA saves curent grid for when offline
This commit is contained in:
342
sudoku.js
Normal file
342
sudoku.js
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const VALUES = "123456789"
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const UNKNOWN = '.'
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const SUGESTION_DELAY = 60000 //ms
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let boxes = []
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let rows = Array.from(Array(9), x => [])
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let columns = Array.from(Array(9), x => [])
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let regions = Array.from(Array(9), x => [])
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let suggestionTimer = null
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let valueToInsert = ""
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let history = []
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let accessKeyModifiers = "AccessKey+"
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function shuffle(iterable) {
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array = Array.from(iterable)
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if (array.length > 1) {
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let i, j, tmp
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for (i = array.length - 1; i > 0; i--) {
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j = Math.floor(Math.random() * (i + 1))
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tmp = array[i]
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array[i] = array[j]
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array[j] = tmp
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}
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}
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return array
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}
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window.onload = function () {
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let rowId = 0
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for (let row of grid.getElementsByTagName('tr')) {
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let columnId = 0
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for (let box of row.getElementsByTagName('input')) {
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let regionId = rowId - rowId % 3 + Math.floor(columnId / 3)
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if (!box.disabled) {
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box.onfocus = onfocus
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box.oninput = oninput
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box.onblur = onblur
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box.onclick = onclick
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box.previousValue = ""
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box.previousPlaceholder = ""
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}
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box.oncontextmenu = oncontextmenu
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box.rowId = rowId
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box.columnId = columnId
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box.regionId = regionId
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boxes.push(box)
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rows[rowId].push(box)
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columns[columnId].push(box)
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regions[regionId].push(box)
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columnId++
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}
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rowId++
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}
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const savedGame = localStorage[location.href]
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if (savedGame) {
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boxes.forEach((box, i) => {
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if (!box.disabled && savedGame[i] != UNKNOWN) {
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box.value = savedGame[i]
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box.previousValue = savedGame[i]
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}
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})
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}
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boxes.forEach(box => {
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box.neighbourhood = new Set(rows[box.rowId].concat(columns[box.columnId]).concat(regions[box.regionId]))
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box.neighbourhood.delete(box)
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box.neighbourhood = Array.from(box.neighbourhood)
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searchCandidatesOf(box)
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})
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if (/Win/.test(navigator.platform) || /Linux/.test(navigator.platform)) accessKeyModifiers = "Alt+Maj+"
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else if (/Mac/.test(navigator.platform)) accessKeyModifiers = "⌃⌥"
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for (node of document.querySelectorAll("*[accesskey]")) {
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node.title += " [" + (node.accessKeyLabel || accessKeyModifiers + node.accessKey) + "]"
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}
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refreshUI()
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if ("serviceWorker" in navigator) {
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navigator.serviceWorker.register(`service-worker.js?location=${location.href}`)
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}
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}
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function searchCandidatesOf(box) {
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box.candidates = new Set(VALUES)
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box.neighbourhood.forEach(neighbour => box.candidates.delete(neighbour.value))
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if (!box.disabled) {
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switch (box.candidates.size) {
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case 0:
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box.title = "Aucune possibilité !"
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break
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case 1:
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box.title = "1 possibilité [Clic-droit]"
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break
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default:
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box.title = box.candidates.size + " possibilités [Clic-droit]"
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}
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}
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}
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function onfocus() {
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if (pencilRadio.checked) {
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this.value = this.placeholder
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this.classList.add("pencil")
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} else {
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this.select()
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}
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this.style.caretColor = valueToInsert? "transparent": "auto"
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}
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function onclick() {
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if (inkPenRadio.checked) {
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this.value = valueToInsert
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} else if (pencilRadio.checked) {
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this.value += valueToInsert
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} else {
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this.value = ""
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this.placeholder = ""
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}
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this.oninput()
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}
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function oninput() {
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history.push({ box: this, value: this.previousValue, placeholder: this.previousPlaceholder })
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undoButton.disabled = false
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if (pencilRadio.checked) {
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this.value = Array.from(new Set(this.value)).sort().join("")
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this.previousValue = ""
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this.previousPlaceholder = this.value
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} else {
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this.previousValue = this.value
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this.previousPlaceholder = this.placeholder
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refreshBox(this)
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}
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}
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function refreshBox(box) {
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localStorage[location.href] = boxes.map(box => box.value || ".").join("")
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box.neighbourhood.concat([box]).forEach(neighbour => {
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searchCandidatesOf(neighbour)
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neighbour.setCustomValidity("")
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neighbour.required = false
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})
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refreshUI()
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for (neighbour1 of box.neighbourhood) {
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if (neighbour1.value.length == 1) {
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for (area of [
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{ name: "région", neighbours: regions[neighbour1.regionId] },
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{ name: "ligne", neighbours: rows[neighbour1.rowId] },
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{ name: "colonne", neighbours: columns[neighbour1.columnId] },
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])
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for (neighbour2 of area.neighbours)
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if (neighbour2 != neighbour1 && neighbour2.value == neighbour1.value) {
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for (neighbour of [neighbour1, neighbour2]) {
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neighbour.setCustomValidity(`Il y a un autre ${neighbour.value} dans cette ${area.name}.`)
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}
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}
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} else {
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if (neighbour1.candidates.size == 0) {
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neighbour1.setCustomValidity("Aucun chiffre possible !")
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neighbour1.required = true
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}
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}
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}
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if (box.form.checkValidity()) { // Correct grid
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if (boxes.filter(box => box.value == "").length == 0)
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setTimeout(() => alert(`Bravo ! Vous avez résolu la grille.`), 500)
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} else { // Errors on grid
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box.form.reportValidity()
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box.select()
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}
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}
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function refreshUI() {
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for (radio of insertRadioGroup.getElementsByTagName("input")) {
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const label = radio.nextElementSibling
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if (boxes.filter(box => box.value == "").some(box => box.candidates.has(radio.value))) {
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radio.disabled = false
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if (radio.previousTitle) {
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label.title = radio.previousTitle
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label.previousTitle = null
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}
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} else {
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radio.disabled = true
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label.previousTitle = label.title
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label.title = `Tous les ${radio.value} sont posés`
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if (valueToInsert == radio.value) valueToInsert = ""
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}
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}
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highlight()
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boxes.filter(box => !box.disabled).forEach(box => {
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if (!box.value && box.candidates.size == 1) box.classList.add("one-candidate")
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else box.classList.remove("one-candidate")
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})
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if (suggestionTimer) clearTimeout(suggestionTimer)
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suggestionTimer = setTimeout(showSuggestion, SUGESTION_DELAY)
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}
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function highlight() {
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if (valueToInsert) {
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if (highlighterCheckbox.checked) {
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boxes.forEach(box => {
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if (box.value == valueToInsert) {
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box.classList.add("same-value")
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box.tabIndex = -1
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}
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else {
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box.classList.remove("same-value")
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if (box.candidates.has(valueToInsert) && !box.disabled) {
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box.classList.remove("forbidden")
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box.tabIndex = 0
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} else {
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box.classList.add("forbidden")
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box.tabIndex = -1
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}
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}
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})
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} else {
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boxes.forEach(box => {
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box.classList.remove("same-value")
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if (box.disabled) {
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box.classList.add("forbidden")
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} else {
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box.classList.remove("forbidden")
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}
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box.tabIndex = 0
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})
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}
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} else {
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boxes.forEach(box => {
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box.classList.remove("same-value", "forbidden")
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box.tabIndex = 0
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})
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}
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}
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function onblur() {
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if (this.classList.contains("pencil")) {
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this.placeholder = this.value
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this.value = ""
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this.classList.remove("pencil")
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}
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}
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function insert(radio) {
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if (radio.value == valueToInsert) {
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valueToInsert = ""
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radio.checked = false
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} else {
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valueToInsert = radio.value
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}
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if (inkPenRadio.checked) customCursor = "url(img/ink-pen.svg) 2 22"
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if (pencilRadio.checked) customCursor = "url(img/pencil.svg) 2 22"
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if (eraserRadio.checked) customCursor = "url(img/eraser.svg) 2 22"
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fallbackCursor = valueToInsert? "copy": "text"
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grid.style.cursor = `${customCursor}, ${fallbackCursor}`
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highlight()
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}
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function undo() {
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if (history.length) {
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const previousState = history.pop()
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previousState.box.value = previousState.value
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previousState.box.placeholder = previousState.placeholder
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refreshBox(previousState.box)
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if (history.length < 1) undoButton.disabled = true
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}
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}
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function restart() {
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if (confirm("Effacer toutes les cases ?")) {
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boxes.filter(box => !box.disabled).forEach(box => {
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box.value = ""
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box.previousValue = ""
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box.placeholder = ""
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box.previousPlaceholder = ""
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box.required = false
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box.setCustomValidity("")
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})
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let history = []
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undoButton.disabled = true
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boxes.forEach(searchCandidatesOf)
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refreshUI()
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}
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}
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function showSuggestion() {
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const easyBoxes = boxes.filter(box => box.value == "" && box.candidates.size == 1)
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if (easyBoxes.length) {
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shuffle(easyBoxes)[0].placeholder = "💡"
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} else {
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clearTimeout(suggestionTimer)
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suggestionTimer = null
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}
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}
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function oncontextmenu(event) {
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event.preventDefault()
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while (contextMenu.firstChild) contextMenu.firstChild.remove()
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const box = event.target
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if (box.candidates.size) {
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Array.from(box.candidates).sort().forEach(candidate => {
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li = document.createElement("li")
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li.innerText = candidate
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li.onclick = function (event) {
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contextMenu.style.display = "none"
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box.onfocus()
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box.value = event.target.innerText
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box.oninput()
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box.onblur()
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}
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contextMenu.appendChild(li)
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})
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} else {
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li = document.createElement("li")
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li.innerText = "Aucune possibilité !"
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li.classList.add("error")
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contextMenu.appendChild(li)
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}
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contextMenu.style.left = `${event.pageX}px`
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contextMenu.style.top = `${event.pageY}px`
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contextMenu.style.display = "block"
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return false
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}
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document.onclick = function (event) {
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contextMenu.style.display = "none"
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}
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document.onkeydown = function(event) {
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if (event.key == "Escape") {
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event.preventDefault()
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contextMenu.style.display = "none"
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}
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}
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