@taiga-ui/addon-mobile
Version:
Extension package for Taiga UI that adds support for mobile specific behaviors such as custom data pickers, dropdowns, etc.
126 lines • 20.5 kB
JavaScript
import { __decorate } from "tslib";
import { MONTHS_IN_YEAR } from '@taiga-ui/cdk/date-time';
import { tuiPure } from '@taiga-ui/cdk/utils/miscellaneous';
import { distinctUntilChanged, Subject, takeUntil } from 'rxjs';
import { ANDROID_CYCLE, BUFFER, IOS_CYCLE, RANGE, YEARLY_CYCLE, } from './mobile-calendar.const';
const ANDROID_CYCLE_HEIGHT = reduceCycle(ANDROID_CYCLE);
const IOS_CYCLE_HEIGHT = reduceCycle(IOS_CYCLE);
function reduceCycle(cycle, lastYear = 28, lastMonth = 12) {
return cycle.reduce((total, year, yearIndex) => yearIndex <= lastYear
? total +
year.reduce((sum, month, monthIndex) => yearIndex < lastYear ||
(yearIndex === lastYear && monthIndex < lastMonth)
? sum + month
: sum, 0)
: total, 0);
}
/**
* This scroll strategy is hard wired with styles for iOS and Android.
* It is dependent on month height on those platforms and is designed to
* work for {@link TuiMobileCalendar} with years 1906 to 2102
*/
export class TuiMobileCalendarStrategy {
constructor(isIOS, scrollService) {
this.isIOS = isIOS;
this.scrollService = scrollService;
this.index$ = new Subject();
this.viewport = null;
this.destroy$ = new Subject();
}
get scrolledIndexChange() {
return this.index$.pipe(distinctUntilChanged());
}
attach(viewport) {
const cycle = this.isIOS ? IOS_CYCLE_HEIGHT : ANDROID_CYCLE_HEIGHT;
this.viewport = viewport;
this.viewport.setTotalContentSize(cycle * 7);
this.updateRenderedRange(this.viewport);
}
detach() {
this.index$.complete();
this.viewport = null;
this.destroy$.next();
this.destroy$.complete();
}
onContentScrolled() {
if (this.viewport) {
this.updateRenderedRange(this.viewport);
}
}
/** These do not matter for this case */
onDataLengthChanged() { }
onContentRendered() { }
onRenderedOffsetChanged() { }
scrollToIndex(index, behavior) {
if (!this.viewport) {
return;
}
const scrollTop = this.getOffsetForIndex(index);
if (behavior !== 'smooth') {
this.viewport.scrollToOffset(scrollTop, behavior);
return;
}
this.scrollService
.scroll$(this.viewport.elementRef.nativeElement, scrollTop)
.pipe(takeUntil(this.destroy$))
.subscribe();
}
getOffsetForIndex(index) {
const month = index % MONTHS_IN_YEAR;
const year = (index - month) / MONTHS_IN_YEAR;
return this.computeHeight(year, month);
}
getIndexForOffset(offset) {
const cycle = this.isIOS ? IOS_CYCLE : ANDROID_CYCLE;
const cycleHeight = this.isIOS ? IOS_CYCLE_HEIGHT : ANDROID_CYCLE_HEIGHT;
const remainder = offset % cycleHeight;
const years = ((offset - remainder) / cycleHeight) * YEARLY_CYCLE;
let accumulator = 0;
for (let year = 0; year < cycle.length; year++) {
for (let month = 0; month < (cycle[year]?.length ?? 0); month++) {
accumulator += cycle[year]?.[month] ?? 0;
if (accumulator - (cycle[year]?.[month] ?? 0) / 2 > remainder) {
return Math.max((years + year) * MONTHS_IN_YEAR + month, 0);
}
}
}
return RANGE;
}
computeHeight(year, month) {
const cycle = this.isIOS ? IOS_CYCLE : ANDROID_CYCLE;
const remainder = year % YEARLY_CYCLE;
const remainderHeight = reduceCycle(cycle, remainder, month);
const fullCycles = (year - remainder) / YEARLY_CYCLE;
const fullCyclesHeight = this.isIOS
? fullCycles * IOS_CYCLE_HEIGHT
: fullCycles * ANDROID_CYCLE_HEIGHT;
return fullCyclesHeight + remainderHeight;
}
updateRenderedRange(viewport) {
const offset = viewport.measureScrollOffset();
const { start, end } = viewport.getRenderedRange();
const viewportSize = viewport.getViewportSize();
const dataLength = viewport.getDataLength();
const newRange = { start, end };
const firstVisibleIndex = this.getIndexForOffset(offset);
const startBuffer = offset - this.getOffsetForIndex(start);
if (startBuffer < BUFFER && start !== 0) {
newRange.start = Math.max(0, this.getIndexForOffset(offset - BUFFER * 2));
newRange.end = Math.min(dataLength, this.getIndexForOffset(offset + viewportSize + BUFFER));
}
else {
const endBuffer = this.getOffsetForIndex(end) - offset - viewportSize;
if (endBuffer < BUFFER && end !== dataLength) {
newRange.start = Math.max(0, this.getIndexForOffset(offset - BUFFER));
newRange.end = Math.min(dataLength, this.getIndexForOffset(offset + viewportSize + BUFFER * 2));
}
}
viewport.setRenderedRange(newRange);
viewport.setRenderedContentOffset(this.getOffsetForIndex(newRange.start));
this.index$.next(firstVisibleIndex);
}
}
__decorate([
tuiPure
], TuiMobileCalendarStrategy.prototype, "scrolledIndexChange", null);
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{\n    type CdkVirtualScrollViewport,\n    type VirtualScrollStrategy,\n} from '@angular/cdk/scrolling';\nimport {MONTHS_IN_YEAR} from '@taiga-ui/cdk/date-time';\nimport {type TuiScrollService} from '@taiga-ui/cdk/services';\nimport {tuiPure} from '@taiga-ui/cdk/utils/miscellaneous';\nimport {distinctUntilChanged, type Observable, Subject, takeUntil} from 'rxjs';\n\nimport {\n    ANDROID_CYCLE,\n    BUFFER,\n    IOS_CYCLE,\n    RANGE,\n    YEARLY_CYCLE,\n} from './mobile-calendar.const';\n\nconst ANDROID_CYCLE_HEIGHT = reduceCycle(ANDROID_CYCLE);\nconst IOS_CYCLE_HEIGHT = reduceCycle(IOS_CYCLE);\n\nfunction reduceCycle(\n    cycle: ReadonlyArray<readonly number[]>,\n    lastYear = 28,\n    lastMonth = 12,\n): number {\n    return cycle.reduce(\n        (total, year, yearIndex) =>\n            yearIndex <= lastYear\n                ? total +\n                  year.reduce(\n                      (sum, month, monthIndex) =>\n                          yearIndex < lastYear ||\n                          (yearIndex === lastYear && monthIndex < lastMonth)\n                              ? sum + month\n                              : sum,\n                      0,\n                  )\n                : total,\n        0,\n    );\n}\n\n/**\n * This scroll strategy is hard wired with styles for iOS and Android.\n * It is dependent on month height on those platforms and is designed to\n * work for {@link TuiMobileCalendar} with years 1906 to 2102\n */\nexport class TuiMobileCalendarStrategy implements VirtualScrollStrategy {\n    private readonly index$ = new Subject<number>();\n\n    private viewport: CdkVirtualScrollViewport | null = null;\n\n    private readonly destroy$ = new Subject<void>();\n\n    constructor(\n        private readonly isIOS: boolean,\n        private readonly scrollService: TuiScrollService,\n    ) {}\n\n    @tuiPure\n    public get scrolledIndexChange(): Observable<number> {\n        return this.index$.pipe(distinctUntilChanged());\n    }\n\n    public attach(viewport: CdkVirtualScrollViewport): void {\n        const cycle = this.isIOS ? IOS_CYCLE_HEIGHT : ANDROID_CYCLE_HEIGHT;\n\n        this.viewport = viewport;\n        this.viewport.setTotalContentSize(cycle * 7);\n        this.updateRenderedRange(this.viewport);\n    }\n\n    public detach(): void {\n        this.index$.complete();\n        this.viewport = null;\n        this.destroy$.next();\n        this.destroy$.complete();\n    }\n\n    public onContentScrolled(): void {\n        if (this.viewport) {\n            this.updateRenderedRange(this.viewport);\n        }\n    }\n\n    /** These do not matter for this case */\n    public onDataLengthChanged(): void {}\n    public onContentRendered(): void {}\n    public onRenderedOffsetChanged(): void {}\n\n    public scrollToIndex(index: number, behavior: ScrollBehavior): void {\n        if (!this.viewport) {\n            return;\n        }\n\n        const scrollTop = this.getOffsetForIndex(index);\n\n        if (behavior !== 'smooth') {\n            this.viewport.scrollToOffset(scrollTop, behavior);\n\n            return;\n        }\n\n        this.scrollService\n            .scroll$(this.viewport.elementRef.nativeElement, scrollTop)\n            .pipe(takeUntil(this.destroy$))\n            .subscribe();\n    }\n\n    private getOffsetForIndex(index: number): number {\n        const month = index % MONTHS_IN_YEAR;\n        const year = (index - month) / MONTHS_IN_YEAR;\n\n        return this.computeHeight(year, month);\n    }\n\n    private getIndexForOffset(offset: number): number {\n        const cycle = this.isIOS ? IOS_CYCLE : ANDROID_CYCLE;\n        const cycleHeight = this.isIOS ? IOS_CYCLE_HEIGHT : ANDROID_CYCLE_HEIGHT;\n        const remainder = offset % cycleHeight;\n        const years = ((offset - remainder) / cycleHeight) * YEARLY_CYCLE;\n\n        let accumulator = 0;\n\n        for (let year = 0; year < cycle.length; year++) {\n            for (let month = 0; month < (cycle[year]?.length ?? 0); month++) {\n                accumulator += cycle[year]?.[month] ?? 0;\n\n                if (accumulator - (cycle[year]?.[month] ?? 0) / 2 > remainder) {\n                    return Math.max((years + year) * MONTHS_IN_YEAR + month, 0);\n                }\n            }\n        }\n\n        return RANGE;\n    }\n\n    private computeHeight(year: number, month?: number): number {\n        const cycle = this.isIOS ? IOS_CYCLE : ANDROID_CYCLE;\n        const remainder = year % YEARLY_CYCLE;\n        const remainderHeight = reduceCycle(cycle, remainder, month);\n        const fullCycles = (year - remainder) / YEARLY_CYCLE;\n        const fullCyclesHeight = this.isIOS\n            ? fullCycles * IOS_CYCLE_HEIGHT\n            : fullCycles * ANDROID_CYCLE_HEIGHT;\n\n        return fullCyclesHeight + remainderHeight;\n    }\n\n    private updateRenderedRange(viewport: CdkVirtualScrollViewport): void {\n        const offset = viewport.measureScrollOffset();\n        const {start, end} = viewport.getRenderedRange();\n        const viewportSize = viewport.getViewportSize();\n        const dataLength = viewport.getDataLength();\n        const newRange = {start, end};\n        const firstVisibleIndex = this.getIndexForOffset(offset);\n        const startBuffer = offset - this.getOffsetForIndex(start);\n\n        if (startBuffer < BUFFER && start !== 0) {\n            newRange.start = Math.max(0, this.getIndexForOffset(offset - BUFFER * 2));\n            newRange.end = Math.min(\n                dataLength,\n                this.getIndexForOffset(offset + viewportSize + BUFFER),\n            );\n        } else {\n            const endBuffer = this.getOffsetForIndex(end) - offset - viewportSize;\n\n            if (endBuffer < BUFFER && end !== dataLength) {\n                newRange.start = Math.max(0, this.getIndexForOffset(offset - BUFFER));\n                newRange.end = Math.min(\n                    dataLength,\n                    this.getIndexForOffset(offset + viewportSize + BUFFER * 2),\n                );\n            }\n        }\n\n        viewport.setRenderedRange(newRange);\n        viewport.setRenderedContentOffset(this.getOffsetForIndex(newRange.start));\n        this.index$.next(firstVisibleIndex);\n    }\n}\n"]}