@nova-ui/bits
Version:
SolarWinds Nova Framework
158 lines • 22.5 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 { ActiveDescendantKeyManager, LiveAnnouncer } from "@angular/cdk/a11y";
import { Injectable } from "@angular/core";
import isNil from "lodash/isNil";
import { KEYBOARD_CODE } from "../../constants/keycode.constants";
import * as i0 from "@angular/core";
import * as i1 from "@angular/cdk/a11y";
export class SelectedItemsKeyControlService {
constructor(liveAnnouncer) {
this.liveAnnouncer = liveAnnouncer;
}
initSelectedItemsKeyManager(elems, combobox) {
this.combobox = combobox;
this.inputElement = combobox.inputElement?.nativeElement;
this.selectedItems = elems;
this.selectedItemsKeyManager = new ActiveDescendantKeyManager(elems)
.withHorizontalOrientation("ltr")
.withWrap();
if (!isNil(this.activeSelectedItemIndex) &&
this.activeSelectedItemIndex >= 0 &&
Number.isInteger(this.activeSelectedItemIndex)) {
setTimeout(() => this.selectedItemsKeyManager.setActiveItem(this.activeSelectedItemIndex));
}
}
onKeydown(event) {
const caretPosition = event.target.selectionStart;
const isKeyAllowed = this.isBackspace(event) || this.isLeftOrRightArrow(event);
if (caretPosition !== 0 ||
(!this.activeItem && this.isRightArrow(event))) {
return;
}
if (!isKeyAllowed) {
this.deactivateSelectedItems();
return;
}
if (!this.combobox.manualDropdownControl && !this.activeItem) {
this.combobox.hideDropdown();
}
if (this.isLeftArrow(event) &&
this.activeItem !== this.selectedItems.first) {
this.selectedItemsKeyManager.onKeydown(event);
this.liveAnnouncer.announce(`${this.getActiveItemTitle} selected`);
return;
}
if (this.isRightArrow(event) && this.activeItem) {
this.handleRightArrow(event);
return;
}
if (this.isBackspace(event)) {
this.handleBackspace();
return;
}
}
setLastItemActive() {
this.selectedItemsKeyManager.setLastItemActive();
}
isSelectedItemsActive() {
return Boolean(this.activeItem);
}
deactivateSelectedItems() {
this.selectedItemsKeyManager.setActiveItem(-1);
this.activeSelectedItemIndex = undefined;
}
handleBackspace() {
if (this.activeItem) {
this.deselectItem();
return;
}
if (!this.activeItem) {
this.setLastItemActive();
return;
}
}
handleRightArrow(event) {
const isLastSelectedItemActive = this.activeItem === this.selectedItems.last;
if (isLastSelectedItemActive) {
this.selectedItemsKeyManager.onKeydown(event);
this.deactivateSelectedItems();
if (!this.combobox.manualDropdownControl) {
this.combobox.showDropdown();
}
return;
}
this.selectedItemsKeyManager.onKeydown(event);
this.liveAnnouncer.announce(`${this.getActiveItemTitle} selected`);
}
calculateActiveSelectedItemIndex() {
if (isNil(this.selectedItemsKeyManager.activeItemIndex)) {
throw new Error("ActiveItemIndex is not defined");
}
const previousItemIndex = this.selectedItemsKeyManager.activeItemIndex - 1;
if (previousItemIndex >= 0) {
this.activeSelectedItemIndex = previousItemIndex;
return;
}
if (previousItemIndex === -1 && this.selectedItems.length > 1) {
this.activeSelectedItemIndex = 0;
return;
}
if (previousItemIndex === -1 && this.selectedItems.length) {
this.activeSelectedItemIndex = undefined;
return;
}
if (previousItemIndex >= 0 && this.selectedItems.length === 0) {
this.activeSelectedItemIndex = undefined;
return;
}
}
isBackspace(event) {
return event.code === KEYBOARD_CODE.BACKSPACE;
}
isLeftOrRightArrow(event) {
return this.isLeftArrow(event) || this.isRightArrow(event);
}
isRightArrow(event) {
return event.code === KEYBOARD_CODE.ARROW_RIGHT;
}
isLeftArrow(event) {
return event.code === KEYBOARD_CODE.ARROW_LEFT;
}
get activeItem() {
return this.selectedItemsKeyManager.activeItem;
}
deselectItem() {
if (!isNil(this.selectedItemsKeyManager.activeItemIndex)) {
this.calculateActiveSelectedItemIndex();
this.combobox.deselectItem(this.selectedItemsKeyManager.activeItemIndex);
this.liveAnnouncer.announce(`${this.getActiveItemTitle} removed`);
}
}
get getActiveItemTitle() {
return this.activeItem?.cdRef.context.item.label || "";
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: SelectedItemsKeyControlService, deps: [{ token: i1.LiveAnnouncer }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: SelectedItemsKeyControlService }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: SelectedItemsKeyControlService, decorators: [{
type: Injectable
}], ctorParameters: () => [{ type: i1.LiveAnnouncer }] });
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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 { ActiveDescendantKeyManager, LiveAnnouncer } from \"@angular/cdk/a11y\";\nimport { Injectable, QueryList } from \"@angular/core\";\nimport isNil from \"lodash/isNil\";\n\nimport { ComboboxV2Component } from \"./combobox-v2/combobox-v2.component\";\nimport { MarkAsSelectedItemDirective } from \"./mark-as-selected-item.directive\";\nimport { KEYBOARD_CODE } from \"../../constants/keycode.constants\";\n\n@Injectable()\nexport class SelectedItemsKeyControlService {\n    private selectedItems: QueryList<MarkAsSelectedItemDirective>;\n    private selectedItemsKeyManager: ActiveDescendantKeyManager<any>;\n    private activeSelectedItemIndex?: number;\n    private combobox: ComboboxV2Component;\n    private inputElement: HTMLInputElement;\n\n    constructor(public liveAnnouncer: LiveAnnouncer) {}\n\n    public initSelectedItemsKeyManager(\n        elems: QueryList<MarkAsSelectedItemDirective>,\n        combobox: ComboboxV2Component\n    ): void {\n        this.combobox = combobox;\n        this.inputElement = combobox.inputElement?.nativeElement;\n        this.selectedItems = elems;\n\n        this.selectedItemsKeyManager = new ActiveDescendantKeyManager(elems)\n            .withHorizontalOrientation(\"ltr\")\n            .withWrap();\n\n        if (\n            !isNil(this.activeSelectedItemIndex) &&\n            this.activeSelectedItemIndex >= 0 &&\n            Number.isInteger(this.activeSelectedItemIndex)\n        ) {\n            setTimeout(() =>\n                this.selectedItemsKeyManager.setActiveItem(\n                    this.activeSelectedItemIndex\n                )\n            );\n        }\n    }\n\n    public onKeydown(event: KeyboardEvent): void {\n        const caretPosition = (event.target as HTMLInputElement).selectionStart;\n        const isKeyAllowed =\n            this.isBackspace(event) || this.isLeftOrRightArrow(event);\n\n        if (\n            caretPosition !== 0 ||\n            (!this.activeItem && this.isRightArrow(event))\n        ) {\n            return;\n        }\n\n        if (!isKeyAllowed) {\n            this.deactivateSelectedItems();\n            return;\n        }\n\n        if (!this.combobox.manualDropdownControl && !this.activeItem) {\n            this.combobox.hideDropdown();\n        }\n\n        if (\n            this.isLeftArrow(event) &&\n            this.activeItem !== this.selectedItems.first\n        ) {\n            this.selectedItemsKeyManager.onKeydown(event);\n            this.liveAnnouncer.announce(`${this.getActiveItemTitle} selected`);\n            return;\n        }\n\n        if (this.isRightArrow(event) && this.activeItem) {\n            this.handleRightArrow(event);\n            return;\n        }\n\n        if (this.isBackspace(event)) {\n            this.handleBackspace();\n            return;\n        }\n    }\n\n    public setLastItemActive(): void {\n        this.selectedItemsKeyManager.setLastItemActive();\n    }\n\n    public isSelectedItemsActive(): boolean {\n        return Boolean(this.activeItem);\n    }\n\n    public deactivateSelectedItems(): void {\n        this.selectedItemsKeyManager.setActiveItem(-1);\n        this.activeSelectedItemIndex = undefined;\n    }\n\n    private handleBackspace(): void {\n        if (this.activeItem) {\n            this.deselectItem();\n            return;\n        }\n\n        if (!this.activeItem) {\n            this.setLastItemActive();\n            return;\n        }\n    }\n\n    private handleRightArrow(event: KeyboardEvent): void {\n        const isLastSelectedItemActive =\n            this.activeItem === this.selectedItems.last;\n\n        if (isLastSelectedItemActive) {\n            this.selectedItemsKeyManager.onKeydown(event);\n            this.deactivateSelectedItems();\n\n            if (!this.combobox.manualDropdownControl) {\n                this.combobox.showDropdown();\n            }\n\n            return;\n        }\n\n        this.selectedItemsKeyManager.onKeydown(event);\n        this.liveAnnouncer.announce(`${this.getActiveItemTitle} selected`);\n    }\n\n    private calculateActiveSelectedItemIndex(): void {\n        if (isNil(this.selectedItemsKeyManager.activeItemIndex)) {\n            throw new Error(\"ActiveItemIndex is not defined\");\n        }\n\n        const previousItemIndex =\n            this.selectedItemsKeyManager.activeItemIndex - 1;\n\n        if (previousItemIndex >= 0) {\n            this.activeSelectedItemIndex = previousItemIndex;\n            return;\n        }\n\n        if (previousItemIndex === -1 && this.selectedItems.length > 1) {\n            this.activeSelectedItemIndex = 0;\n            return;\n        }\n\n        if (previousItemIndex === -1 && this.selectedItems.length) {\n            this.activeSelectedItemIndex = undefined;\n            return;\n        }\n\n        if (previousItemIndex >= 0 && this.selectedItems.length === 0) {\n            this.activeSelectedItemIndex = undefined;\n            return;\n        }\n    }\n\n    private isBackspace(event: KeyboardEvent): boolean {\n        return event.code === KEYBOARD_CODE.BACKSPACE;\n    }\n\n    private isLeftOrRightArrow(event: KeyboardEvent) {\n        return this.isLeftArrow(event) || this.isRightArrow(event);\n    }\n\n    private isRightArrow(event: KeyboardEvent) {\n        return event.code === KEYBOARD_CODE.ARROW_RIGHT;\n    }\n\n    private isLeftArrow(event: KeyboardEvent) {\n        return event.code === KEYBOARD_CODE.ARROW_LEFT;\n    }\n\n    private get activeItem() {\n        return this.selectedItemsKeyManager.activeItem;\n    }\n\n    private deselectItem(): void {\n        if (!isNil(this.selectedItemsKeyManager.activeItemIndex)) {\n            this.calculateActiveSelectedItemIndex();\n            this.combobox.deselectItem(\n                this.selectedItemsKeyManager.activeItemIndex\n            );\n            this.liveAnnouncer.announce(`${this.getActiveItemTitle} removed`);\n        }\n    }\n\n    private get getActiveItemTitle(): string {\n        return this.activeItem?.cdRef.context.item.label || \"\";\n    }\n}\n"]}