@nova-ui/bits
Version:
SolarWinds Nova Framework
136 lines • 21.5 kB
JavaScript
// © 2022 SolarWinds Worldwide, LLC. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import { EventEmitter, Injectable, NgZone, } from "@angular/core";
import { ChipComponent } from "./chip/chip.component";
import * as i0 from "@angular/core";
export class ChipsOverflowService {
constructor(zone) {
this.zone = zone;
this.chipsOverflowed = new EventEmitter();
}
init() {
this.initChipResizeObserver();
this.initChipsMutationObserver();
}
handleOverflow() {
this.overflowedChips = {
flatItems: [],
groupedItems: [],
};
this.processChipsOverflow();
this.chipsOverflowed.emit(this.overflowedChips);
}
onDestroy() {
this.chipResizeObserver?.disconnect();
this.chipsMutationObserver?.disconnect();
}
initChipResizeObserver() {
if (!this.allChips.first) {
return;
}
this.chipResizeObserver = new ResizeObserver(() => {
this.zone.run(() => this.handleOverflow());
});
// Rendering occurs gradually, so we tracking every dimension change, to calculate overflow items correctly
// to avoid case when Overflow Counter renders on the next line. Observing occurs only on first item, but it
// also indicates that other items on the same level of DOM is also rendered
this.chipResizeObserver.observe(this.getNativeElement(this.allChips.first));
}
initChipsMutationObserver() {
const config = { childList: true };
this.chipsMutationObserver = new MutationObserver(() => this.handleOverflow());
this.chipsMutationObserver.observe(this.mainCell.nativeElement, config);
}
processChipsOverflow() {
let acc = 0;
let renderedLines = 1;
let chipsOverflow = false;
const rowMaxWidth = this.getRowWidth();
const counterWidth = this.overflowCounter?.nativeElement.getBoundingClientRect().width ||
0;
this.allChips.toArray().forEach((item) => {
const chipElement = this.getNativeElement(item);
chipElement.style.display = "inline";
const chipElementWidth = chipElement.getBoundingClientRect().width;
const isLastLine = () => renderedLines === this.overflowLinesNumber;
if (!isLastLine() && acc + chipElementWidth > rowMaxWidth) {
renderedLines++;
acc = 0;
}
if (isLastLine() &&
acc + chipElementWidth + counterWidth > rowMaxWidth) {
acc = 0;
chipsOverflow = true;
if (!chipsOverflow) {
renderedLines++;
}
}
acc += chipElementWidth;
if (isLastLine() && chipsOverflow) {
chipElement.style.display = "none";
this.updateOverflowChips(item);
}
});
}
updateOverflowChips(item) {
const chip = this.findChipItem(item);
if (chip?.inFlat) {
this.overflowedChips.flatItems?.push(item.item);
}
if (chip?.inGroup) {
const groupId = this.itemsSource.groupedItems?.indexOf(chip.inGroup);
const existingGroup = this.overflowedChips.groupedItems?.find((group) => group.id === `group${groupId}`);
if (existingGroup) {
existingGroup.items.push(item.item);
return;
}
this.overflowedChips.groupedItems?.push({
id: `group${groupId}`,
items: [item.item],
label: chip.inGroup.label,
});
}
}
findChipItem(item) {
if (!(item instanceof ChipComponent)) {
return;
}
const inFlat = this.itemsSource.flatItems?.find((i) => i === item.item);
const inGroup = this.itemsSource.groupedItems?.find((group) => group.items.find((i) => i === item.item));
return { inFlat, inGroup };
}
getNativeElement(item) {
return item instanceof ChipComponent
? item.host.nativeElement
: item.nativeElement;
}
getRowWidth() {
return (this.nuiChips?.nativeElement.getBoundingClientRect().width -
this.clearAll?.nativeElement.getBoundingClientRect().width -
parseFloat(getComputedStyle(this.nuiChips?.nativeElement).paddingLeft) -
parseFloat(getComputedStyle(this.nuiChips?.nativeElement).paddingRight));
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: ChipsOverflowService, deps: [{ token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: ChipsOverflowService }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: ChipsOverflowService, decorators: [{
type: Injectable
}], ctorParameters: () => [{ type: i0.NgZone }] });
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All rights reserved.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n//  of this software and associated documentation files (the \"Software\"), to\n//  deal in the Software without restriction, including without limitation the\n//  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n//  sell copies of the Software, and to permit persons to whom the Software is\n//  furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n//  all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n//  THE SOFTWARE.\n\nimport {\n    ElementRef,\n    EventEmitter,\n    Injectable,\n    NgZone,\n    QueryList,\n} from \"@angular/core\";\n\nimport { ChipComponent } from \"./chip/chip.component\";\nimport { IChipsGroup, IChipsItem, IChipsItemsSource } from \"./public-api\";\n\n@Injectable()\nexport class ChipsOverflowService {\n    public itemsSource: IChipsItemsSource;\n    public mainCell: ElementRef<HTMLElement>;\n    public clearAll: ElementRef<HTMLElement>;\n    public nuiChips: ElementRef<HTMLElement>;\n    public allChips: QueryList<ChipComponent | ElementRef<HTMLElement>>;\n    public overflowCounter: ElementRef<HTMLElement>;\n    public overflowLinesNumber: number;\n    public chipsOverflowed: EventEmitter<IChipsItemsSource> =\n        new EventEmitter<IChipsItemsSource>();\n\n    private overflowedChips: IChipsItemsSource;\n    private chipResizeObserver: ResizeObserver;\n    private chipsMutationObserver: MutationObserver;\n\n    constructor(private zone: NgZone) {}\n\n    public init(): void {\n        this.initChipResizeObserver();\n        this.initChipsMutationObserver();\n    }\n\n    public handleOverflow(): void {\n        this.overflowedChips = {\n            flatItems: [],\n            groupedItems: [],\n        };\n\n        this.processChipsOverflow();\n        this.chipsOverflowed.emit(this.overflowedChips);\n    }\n\n    public onDestroy(): void {\n        this.chipResizeObserver?.disconnect();\n        this.chipsMutationObserver?.disconnect();\n    }\n\n    private initChipResizeObserver(): void {\n        if (!this.allChips.first) {\n            return;\n        }\n\n        this.chipResizeObserver = new ResizeObserver(() => {\n            this.zone.run(() => this.handleOverflow());\n        });\n        // Rendering occurs gradually, so we tracking every dimension change, to calculate overflow items correctly\n        // to avoid case when Overflow Counter renders on the next line. Observing occurs only on first item, but it\n        // also indicates that other items on the same level of DOM is also rendered\n        this.chipResizeObserver.observe(\n            this.getNativeElement(this.allChips.first)\n        );\n    }\n\n    private initChipsMutationObserver(): void {\n        const config = { childList: true };\n        this.chipsMutationObserver = new MutationObserver(() =>\n            this.handleOverflow()\n        );\n        this.chipsMutationObserver.observe(this.mainCell.nativeElement, config);\n    }\n\n    private processChipsOverflow(): void {\n        let acc = 0;\n        let renderedLines = 1;\n        let chipsOverflow = false;\n\n        const rowMaxWidth = this.getRowWidth();\n        const counterWidth =\n            this.overflowCounter?.nativeElement.getBoundingClientRect().width ||\n            0;\n\n        this.allChips.toArray().forEach((item: ElementRef | ChipComponent) => {\n            const chipElement = this.getNativeElement(item);\n            chipElement.style.display = \"inline\";\n            const chipElementWidth = chipElement.getBoundingClientRect().width;\n            const isLastLine = () => renderedLines === this.overflowLinesNumber;\n\n            if (!isLastLine() && acc + chipElementWidth > rowMaxWidth) {\n                renderedLines++;\n                acc = 0;\n            }\n\n            if (\n                isLastLine() &&\n                acc + chipElementWidth + counterWidth > rowMaxWidth\n            ) {\n                acc = 0;\n                chipsOverflow = true;\n\n                if (!chipsOverflow) {\n                    renderedLines++;\n                }\n            }\n\n            acc += chipElementWidth;\n\n            if (isLastLine() && chipsOverflow) {\n                chipElement.style.display = \"none\";\n                this.updateOverflowChips(item);\n            }\n        });\n    }\n\n    private updateOverflowChips(item: ElementRef | ChipComponent): void {\n        const chip = this.findChipItem(item);\n\n        if (chip?.inFlat) {\n            this.overflowedChips.flatItems?.push((item as ChipComponent).item);\n        }\n\n        if (chip?.inGroup) {\n            const groupId = this.itemsSource.groupedItems?.indexOf(\n                chip.inGroup\n            );\n            const existingGroup = this.overflowedChips.groupedItems?.find(\n                (group) => group.id === `group${groupId}`\n            );\n\n            if (existingGroup) {\n                existingGroup.items.push((item as ChipComponent).item);\n                return;\n            }\n\n            this.overflowedChips.groupedItems?.push({\n                id: `group${groupId}`,\n                items: [(item as ChipComponent).item],\n                label: chip.inGroup.label,\n            });\n        }\n    }\n\n    private findChipItem(\n        item: ElementRef | ChipComponent\n    ): { inFlat?: IChipsItem; inGroup?: IChipsGroup } | undefined {\n        if (!(item instanceof ChipComponent)) {\n            return;\n        }\n        const inFlat = this.itemsSource.flatItems?.find((i) => i === item.item);\n        const inGroup = this.itemsSource.groupedItems?.find((group) =>\n            group.items.find((i) => i === item.item)\n        );\n        return { inFlat, inGroup };\n    }\n\n    private getNativeElement(item: ChipComponent | ElementRef): HTMLElement {\n        return item instanceof ChipComponent\n            ? item.host.nativeElement\n            : item.nativeElement;\n    }\n\n    private getRowWidth(): number {\n        return (\n            this.nuiChips?.nativeElement.getBoundingClientRect().width -\n            this.clearAll?.nativeElement.getBoundingClientRect().width -\n            parseFloat(\n                getComputedStyle(this.nuiChips?.nativeElement).paddingLeft\n            ) -\n            parseFloat(\n                getComputedStyle(this.nuiChips?.nativeElement).paddingRight\n            )\n        );\n    }\n}\n"]}