Admin Nasledstvo
248 lines
8.3 KiB
JavaScript
248 lines
8.3 KiB
JavaScript
var picker = {
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// (A) ATTACH DATEPICKER TO TARGET
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// target: field to populate
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// container: generate datepicker in here (for inline datepicker)
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// startmon: start on mon? (optional, default false)
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// yrange: year select range (optional, default 10)
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// disableday: days to disable, e.g. [2,7] to disable tue and sun (optional)
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// onpick : function to call on select date (optional)
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instances: [],
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attach: (opt) => {
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// (A1) SET DEFAULT OPTIONS & REGISTER INSTANCE
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opt.target = document.getElementById(opt.target);
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opt.target.readOnly = true; // PREVENT ONSCREEN KEYBOARD
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if (opt.container) {
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opt.container = document.getElementById(opt.container);
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}
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opt.startmon = opt.startmon ? true : false;
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opt.yrange = opt.yrange ? opt.yrange : 10;
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const id = picker.instances.length;
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picker.instances.push(opt);
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let inst = picker.instances[id];
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// (A2) TEMP VARS + CURRENT MONTH YEAR (UTC+0)
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let months = ["Януари", "Февруари", "Март", "Април", "Май", "Юни",
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"Юли", "Август", "Септември", "Октомври", "Ноември", "Декември"],
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temp, today = new Date(),
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thisMonth = today.getUTCMonth(), // JAN IS 0
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thisYear = today.getUTCFullYear();
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// (A3) GENERATE HTML
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// (A3-1) HTML DATEPICKER WRAPPER
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inst.hPick = document.createElement("div");
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inst.hPick.classList.add("picker");
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// (A3-2) HTML MONTH SELECT
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inst.hMonth = document.createElement("select");
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inst.hMonth.classList.add("picker-m");
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for (let m in months) {
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temp = document.createElement("option");
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temp.value = +m + 1;
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temp.text = months[m];
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inst.hMonth.appendChild(temp);
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}
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inst.hMonth.selectedIndex = thisMonth;
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inst.hMonth.onchange = () => {
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picker.draw(id);
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};
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inst.hPick.appendChild(inst.hMonth);
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// (A3-3) HTML YEAR SELECT
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inst.hYear = document.createElement("select");
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inst.hYear.classList.add("picker-y");
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for (let y = thisYear - inst.yrange; y < thisYear + inst.yrange; y++) {
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temp = document.createElement("option");
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temp.value = y;
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temp.text = y;
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inst.hYear.appendChild(temp);
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}
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inst.hYear.selectedIndex = inst.yrange;
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inst.hYear.onchange = () => {
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picker.draw(id);
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};
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inst.hPick.appendChild(inst.hYear);
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// (A3-4) HTML DAYS
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inst.hDays = document.createElement("div");
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inst.hDays.classList.add("picker-d");
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inst.hPick.appendChild(inst.hDays);
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picker.draw(id);
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// (A4) INLINE DATEPICKER - ATTACH INTO CONTAINER
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if (inst.container) {
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inst.container.appendChild(inst.hPick);
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}
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// (A5) POPUP DATEPICKER - ATTACH INTO HTML BODY
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else {
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// (A5-1) FULL PAGE WRAPPER
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inst.hWrap = document.createElement("div");
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inst.hWrap.classList.add("picker-wrap");
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inst.hWrap.appendChild(inst.hPick);
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// (A5-2) CLICK TO TOGGLE DATEPICKER
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inst.target.onfocus = () => {
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inst.hWrap.classList.add("show");
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};
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inst.hWrap.onclick = (evt) => {
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if (evt.target === inst.hWrap) {
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inst.hWrap.classList.remove("show");
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}
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};
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// (A5-3) ATTACH POPUP DATEPICKER
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document.body.appendChild(inst.hWrap);
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}
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},
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// (B) DRAW DAYS IN MONTH
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draw: (id) => {
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// (B1) CRAZY VARS & CALCULATIONS
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// (B1-1) GET INSTANCE + SELECTED MONTH YEAR
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let inst = picker.instances[id],
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month = inst.hMonth.value,
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year = inst.hYear.value;
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// (B1-2) DATE RANGE CALCULATION (UTC+0)
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let daysInMonth = new Date(Date.UTC(year, month, 0)).getUTCDate(),
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startDay = new Date(Date.UTC(year, month - 1, 1)).getUTCDay(), // SUN IS 0
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endDay = new Date(Date.UTC(year, month - 1, daysInMonth)).getUTCDay();
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startDay = startDay == 0 ? 7 : startDay,
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endDay = endDay == 0 ? 7 : endDay;
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// (B1-3) TODAY (FOR HIGHLIGHTING "TODAY'S DATE CELL")
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let today = new Date(), todayDate = null;
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if (today.getUTCMonth() + 1 == month && today.getUTCFullYear() == year) {
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todayDate = today.getUTCDate();
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}
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// (B1-4) DAY NAMES
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let daynames = ["Пон", "Вт", "Сря", "Чет", "Пет", "Съб"];
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if (inst.startmon) {
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daynames.push("Нед");
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} else {
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daynames.unshift("Нед");
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}
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// (B1-5) FOR GENERATING DATE SQUARES
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let table, row, cell, squares = [];
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// (B2) CALCULATE DATE SQUARES ARRAY
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// (B2-1) EMPTY SQUARES BEFORE FIRST DAY OF MONTH
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if (inst.startmon && startDay !== 1) {
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for (let i = 1; i < startDay; i++) {
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squares.push("B");
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}
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}
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if (!inst.startmon && startDay !== 7) {
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for (let i = 0; i < startDay; i++) {
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squares.push("B");
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}
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}
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// (B2-2) DAYS OF MONTH (SOME DAYS DISABLED)
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if (inst.disableday) {
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let thisDay = startDay;
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for (let i = 1; i <= daysInMonth; i++) {
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squares.push([i, inst.disableday.includes(thisDay)]);
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thisDay++;
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if (thisDay === 8) {
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thisDay = 1;
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}
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}
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}
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// (B2-3) DAYS OF MONTH (ALL DAYS ENABLED)
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else {
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for (let i = 1; i <= daysInMonth; i++) {
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squares.push([i, false]);
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}
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}
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// (B2-4) EMPTY SQUARES AFTER LAST DAY OF MONTH
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if (inst.startmon && endDay !== 7) {
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for (let i = endDay; i < 7; i++) {
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squares.push("B");
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}
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}
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if (!inst.startmon && endDay !== 6) {
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for (let i = endDay; i < (endDay === 7 ? 13 : 6); i++) {
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squares.push("B");
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}
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}
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// (B3) DRAW HTML
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// (B3-1) HTML DAY NAMES HEADER
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table = document.createElement("table");
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row = table.insertRow();
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row.classList.add("picker-d-h");
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for (let d of daynames) {
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cell = row.insertCell();
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cell.innerHTML = d;
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}
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// (B3-2) HTML DATE CELLS
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row = table.insertRow();
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for (let i = 0; i < squares.length; i++) {
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if (i !== squares.length && i % 7 === 0) {
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row = table.insertRow();
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}
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cell = row.insertCell();
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if (squares[i] === "B") {
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cell.classList.add("picker-d-b");
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} else {
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// CELL DATE
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cell.innerHTML = squares[i][0];
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// NOT ALLOWED TO CHOOSE THIS DAY
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if (squares[i][1]) {
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cell.classList.add("picker-d-dd");
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}
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// ALLOWED TO CHOOSE THIS DAY
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else {
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if (squares[i][0] === todayDate) {
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cell.classList.add("picker-d-td");
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}
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cell.classList.add("picker-d-d");
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cell.onclick = () => {
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console.log(id);
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picker.pick(id, squares[i][0]);
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}
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}
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}
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}
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// (B4) ATTACH DAYS TO DATEPICKER
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inst.hDays.innerHTML = "";
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inst.hDays.appendChild(table);
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},
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// (C) CHOOSE A DATE
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pick: (id, day) => {
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// (C1) GET MONTH YEAR
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let inst = picker.instances[id],
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month = inst.hMonth.value,
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year = inst.hYear.value;
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// (C2) FORMAT & SET SELECTED DAY (YYYY-MM-DD)
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if (+month < 10) {
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month = "0" + month;
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}
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if (+day < 10) {
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day = "0" + day;
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}
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inst.target.value = `${year}-${month}-${day}`;
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// (C3) POPUP ONLY - CLOSE
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if (inst.container === undefined) {
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inst.hWrap.classList.remove("show");
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}
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// (C4) CALL ON PICK IF DEFINED
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if (inst.onpick) {
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inst.onpick();
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}
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}
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};
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