Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 | 1x 32x 32x 32x 32x 32x 32x 32x 32x 32x 42x 42x 42x 32x 10x 10x 32x 44x 44x 32x 12x 46x 46x 17x 17x 17x 3x 3x 4x 4x 4x 4x 3x 3x 1x 1x 1x 1x 1x 1x 1x 1x 16x 16x 16x 3x 3x 2x 58x 58x 58x 58x 58x 32x 32x 32x 32x 26x 9x 9x 9x 9x 9x 17x 10x 10x 10x 10x 10x 58x 51x 58x 58x 58x 58x 58x 58x 1044x 290x 290x 1044x 1044x 1044x 1044x 1044x 1044x 58x 19x 19x 19x 12x | /**
* Copyright (c) Siemens 2016 - 2025
* SPDX-License-Identifier: MIT
*/
import { DatePipe } from '@angular/common';
import {
ChangeDetectionStrategy,
Component,
computed,
HostListener,
model,
OnChanges,
output,
signal,
SimpleChanges
} from '@angular/core';
import { isRTL } from '@siemens/element-ng/common';
import {
addYearsInRange,
getFirstDateInYear,
minDate as getMinDate,
isBetween,
today as getToday,
createDate
} from '../date-time-helper';
import { Cell, SiCalendarBodyComponent } from './si-calendar-body.component';
import { SiCalendarDirectionButtonComponent } from './si-calendar-direction-button.component';
import { YearCompareAdapter } from './si-compare-adapter';
import { SiInitialFocusComponent } from './si-initial-focus.component';
/**
* Show months of a single year as table and handles the keyboard interactions.
* The focus and focusedDate is handled according the keyboard interactions.
*/
@Component({
selector: 'si-year-selection',
imports: [SiCalendarDirectionButtonComponent, SiCalendarBodyComponent, DatePipe],
templateUrl: './si-year-selection.component.html',
changeDetection: ChangeDetectionStrategy.OnPush
})
export class SiYearSelectionComponent extends SiInitialFocusComponent implements OnChanges {
/**
* The active date, the cell which will receive the focus.
*/
readonly focusedDate = model.required<Date>();
/** Emits when the active focused date changed to another month / year, typically during keyboard navigation. */
readonly yearRangeChange = output<Date[]>();
/** Listen Escape event to switch view back */
@HostListener('keydown.Escape', ['$event'])
triggerEsc(event: Event): void {
this.selectedValueChange.emit(null);
event.preventDefault();
event.stopPropagation(); // Prevents the overlay from closing.
}
/** Number of column before the row is wrapped */
private readonly columnCount = 3;
/** The number of years which shall be displayed, this number should be even and dividable by columnCount */
private readonly yearsToDisplay = 18;
/** Lower windows bound for displayed year range */
protected readonly fromYear = signal<Date | undefined>(undefined);
/** Upper windows bound for displayed year range */
protected readonly toYear = signal<Date | undefined>(undefined);
/**
* The current visible list of calendar years.
* Every time the focusedDate changes to another year the list will be rebuilt.
*/
protected yearCells: Cell[][] = [];
protected compareAdapter = new YearCompareAdapter();
/** Is previous button disabled based on the minDate. */
protected readonly isPreviousButtonDisabled = computed(() => {
const minDate = this.minDate();
const minMonth = this.minMonth();
if (!minDate && !minMonth) {
return false;
}
const min = getMinDate(minDate, minMonth)!;
return (
this.compareAdapter.isEqual(this.fromYear()!, min) ||
this.compareAdapter.isAfter(min, this.fromYear()!)
);
});
/** Is next button disabled based on the maxDate */
protected readonly isNextButtonDisabled = computed(() => {
const maxDate = this.maxDate();
if (!maxDate) {
return false;
}
return (
this.compareAdapter.isEqual(this.toYear()!, maxDate) ||
this.compareAdapter.isAfter(this.toYear()!, maxDate)
);
});
ngOnChanges(changes: SimpleChanges): void {
if (changes.startDate || changes.focusedDate || changes.maxDate || changes.minDate) {
this.initView();
}
}
protected calendarBodyKeyDown(event: KeyboardEvent): void {
const isRtl = isRTL();
const oldActiveDate = this.focusedDate();
switch (event.key) {
case 'ArrowLeft':
this.setYearOffset(isRtl ? 1 : -1);
break;
case 'ArrowRight':
this.setYearOffset(isRtl ? -1 : 1);
break;
case 'ArrowUp':
this.setYearOffset(-1 * this.columnCount);
break;
case 'ArrowDown':
this.setYearOffset(this.columnCount);
break;
case 'PageUp':
this.setYearOffset(-1 * (oldActiveDate.getFullYear() - this.fromYear()!.getFullYear()));
break;
case 'PageDown':
this.setYearOffset(this.toYear()!.getFullYear() - oldActiveDate.getFullYear());
break;
case 'Escape':
this.selectedValueChange.emit(null);
event.preventDefault();
event.stopPropagation(); // Prevents the overlay from closing.
return;
case 'Enter':
case 'Space':
default:
// Don't prevent default or focus active cell on keys that we don't explicitly handle.
return;
}
if (!this.compareAdapter.isEqual(oldActiveDate, this.focusedDate())) {
this.focusActiveCell();
}
// Prevent unexpected default actions such as form submission.
event.preventDefault();
}
/**
* Change the active date and the range of displayed years.
* The windowOffset control the amount of ranges the view shall move forward or backward.
* The number of displayed years ia controlled by yearsToDisplay.
*/
protected changeVisibleYearRange(windowOffset: number): void {
const offset = windowOffset * this.yearsToDisplay;
this.setYearOffset(offset);
}
protected emitSelectedValue(selected: Date): void {
this.selectedValueChange.emit(selected);
}
/**
* Determine the year range start and end year.
* - Based on the active date this function will find the start and
* ending year of the current displayed range.
* - In case the focusedDate is either before or after the current range the
* start and end year will move the entire window (yearsToDisplay)
*/
private initYearRange(): void {
// Did we exceed the display current displayed year range
let changed = false;
const focusedDate = this.focusedDate();
const fromYear = this.fromYear();
const toYear = this.toYear();
if (!fromYear || !toYear) {
const start = focusedDate.getFullYear() - this.yearsToDisplay / 2;
this.fromYear.set(new Date(start, 0, 1));
this.toYear.set(new Date(start + this.yearsToDisplay - 1, 0, 1));
changed = true;
} else if (this.compareAdapter.isAfter(focusedDate, toYear)) {
// Change window forward
const rangeDistance = Math.floor(
Math.abs(focusedDate.getFullYear() - fromYear.getFullYear()) / this.yearsToDisplay
);
const newFromYear = fromYear.getFullYear() + rangeDistance * this.yearsToDisplay;
this.fromYear.set(new Date(newFromYear, 0, 1));
this.toYear.set(new Date(newFromYear + this.yearsToDisplay - 1, 0, 1));
changed = true;
} else if (this.compareAdapter.isAfter(fromYear, focusedDate)) {
// Change window backwards
const rangeDistance = Math.ceil(
Math.abs(focusedDate.getFullYear() - fromYear.getFullYear()) / this.yearsToDisplay
);
const newFromYear = fromYear.getFullYear() - rangeDistance * this.yearsToDisplay;
this.fromYear.set(new Date(newFromYear, 0, 1));
this.toYear.set(new Date(newFromYear + this.yearsToDisplay - 1, 0, 1));
changed = true;
}
if (changed) {
this.yearRangeChange.emit([this.fromYear()!, this.toYear()!]);
}
}
/**
* Initialize view based on the focusedDate.
*/
private initView(): void {
// Initial year limits
this.initYearRange();
this.yearCells = [];
let row: Cell[] = [];
// The cell date object needs to be the first to prevent that we jump to the next month when
// setting the month. For example the focusedDate is 31. setting february would result in the
// 3. March.
const startDate = getFirstDateInYear(this.fromYear()!);
const today = getToday();
for (let i = 0; i < this.yearsToDisplay; i++) {
if (i > 0 && i % this.columnCount === 0) {
this.yearCells.push(row);
row = [];
}
const date = createDate(startDate);
date.setFullYear(date.getFullYear() + i);
const isToday = this.compareAdapter.isEqual(date, today);
const isDisabled = !this.compareAdapter.isEqualOrBetween(
date,
this.minDate(),
this.maxDate()
);
const year = date.getFullYear().toString();
row.push({
value: date.getDate(),
disabled: isDisabled,
ariaLabel: year,
displayValue: year,
isPreview: false,
isToday,
valueRaw: createDate(date),
cssClasses: ['year', 'si-h4']
});
}
this.yearCells.push(row);
}
/**
* Add offset to year and update focusedDate.
* If the new year is outside min/max date the year will set to the closest year in range.
*/
private setYearOffset(offset: number): void {
const newActive = addYearsInRange(this.focusedDate(), offset, this.minDate(), this.maxDate());
this.focusedDate.set(newActive);
if (!this.fromYear() || !isBetween(this.focusedDate(), this.fromYear(), this.toYear())) {
// Re-calc years view
this.initView();
}
}
}
|