@clr/angular
Version:
Angular components for Clarity
103 lines • 13.5 kB
JavaScript
/*
* Copyright (c) 2016-2025 Broadcom. All Rights Reserved.
* The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries.
* This software is released under MIT license.
* The full license information can be found in LICENSE in the root directory of this project.
*/
import { Component, Input } from '@angular/core';
import { Keys } from '../../../utils/enums/keys.enum';
import { ClrKeyFocus } from './key-focus';
import * as i0 from "@angular/core";
export class ClrRovingTabindex extends ClrKeyFocus {
constructor(elementRef, renderer) {
super(elementRef);
this.renderer = renderer;
this.disabled = false;
}
// Proxy the input, as the selector name from parent class will still be "clrKeyFocus".
get rovingIndexItems() {
return this.focusableItems;
}
set rovingIndexItems(elements) {
this.focusableItems = elements;
}
set rovingTabindexDisabled(disabled) {
this.disabled = disabled;
if (this.currentItem) {
this.setTabindex(this.currentItem, disabled ? -1 : 0);
}
}
handleKeyboardEvent(event) {
if (this.prevKeyPressed(event) && this.currentFocusIsNotFirstItem()) {
this.updateTabindex(this.current - 1);
}
else if (this.nextKeyPressed(event) && this.currentFocusIsNotLastItem()) {
this.updateTabindex(this.current + 1);
}
else if (event.code === Keys.Home) {
this.updateTabindex(0);
}
else if (event.code === Keys.End) {
this.updateTabindex(this.focusableItems.length - 1);
}
super.handleKeyboardEvent(event);
}
setClickedItemCurrent(event) {
let position;
if (this.focusableItems[0].nativeElement) {
position = this.focusableItems.map(item => item.nativeElement).indexOf(event.target);
}
else {
position = this.focusableItems.indexOf(event.target);
}
if (position > -1) {
this.updateTabindex(position);
}
super.setClickedItemCurrent(event);
}
initializeFocus() {
if (this.focusableItems && this.focusableItems.length) {
this.focusableItems.forEach(item => {
this.setTabindex(item, -1);
});
// It is possible that the focus was on an element, whose index is no longer available.
// This can happen when some of the focusable elements are being removed.
// In such cases, the new focus is initialized on the last focusable element.
if (this.current >= this.focusableItems.length) {
this.current = this.focusableItems.length - 1;
}
if (!this.disabled && this.currentItem) {
this.setTabindex(this.currentItem, 0);
}
}
super.initializeFocus();
}
updateTabindex(newIndex) {
this.setTabindex(this.currentItem, -1);
this.setTabindex(this.focusableItems[newIndex], 0);
}
setTabindex(item, value) {
if (item instanceof HTMLElement) {
this.renderer.setAttribute(item, 'tabindex', value.toString());
}
else {
this.renderer.setAttribute(item.nativeElement, 'tabindex', value.toString());
}
}
}
ClrRovingTabindex.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.2", ngImport: i0, type: ClrRovingTabindex, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }], target: i0.ɵɵFactoryTarget.Component });
ClrRovingTabindex.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "15.2.2", type: ClrRovingTabindex, selector: "[clrRovingTabindex]", inputs: { rovingIndexItems: ["clrRovingTabindex", "rovingIndexItems"], rovingTabindexDisabled: ["clrRovingTabindexDisabled", "rovingTabindexDisabled"] }, usesInheritance: true, ngImport: i0, template: '<ng-content></ng-content>', isInline: true });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.2", ngImport: i0, type: ClrRovingTabindex, decorators: [{
type: Component,
args: [{
selector: '[clrRovingTabindex]',
template: '<ng-content></ng-content>',
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.Renderer2 }]; }, propDecorators: { rovingIndexItems: [{
type: Input,
args: ['clrRovingTabindex']
}], rovingTabindexDisabled: [{
type: Input,
args: ['clrRovingTabindexDisabled']
}] } });
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All Rights Reserved.\n * The term \"Broadcom\" refers to Broadcom Inc. and/or its subsidiaries.\n * This software is released under MIT license.\n * The full license information can be found in LICENSE in the root directory of this project.\n */\n\nimport { Component, ElementRef, Input, Renderer2 } from '@angular/core';\n\nimport { Keys } from '../../../utils/enums/keys.enum';\nimport { FocusableItem } from './interfaces';\nimport { ClrKeyFocus } from './key-focus';\n\n@Component({\n  selector: '[clrRovingTabindex]',\n  template: '<ng-content></ng-content>',\n})\nexport class ClrRovingTabindex extends ClrKeyFocus {\n  private disabled = false;\n\n  constructor(elementRef: ElementRef<HTMLElement>, private renderer: Renderer2) {\n    super(elementRef);\n  }\n\n  // Proxy the input, as the selector name from parent class will still be \"clrKeyFocus\".\n  @Input('clrRovingTabindex')\n  get rovingIndexItems(): Array<FocusableItem> | string {\n    return this.focusableItems;\n  }\n  set rovingIndexItems(elements: Array<FocusableItem> | string) {\n    this.focusableItems = elements as Array<FocusableItem>;\n  }\n\n  @Input('clrRovingTabindexDisabled')\n  set rovingTabindexDisabled(disabled: boolean) {\n    this.disabled = disabled;\n    if (this.currentItem) {\n      this.setTabindex(this.currentItem, disabled ? -1 : 0);\n    }\n  }\n\n  override handleKeyboardEvent(event: KeyboardEvent) {\n    if (this.prevKeyPressed(event) && this.currentFocusIsNotFirstItem()) {\n      this.updateTabindex(this.current - 1);\n    } else if (this.nextKeyPressed(event) && this.currentFocusIsNotLastItem()) {\n      this.updateTabindex(this.current + 1);\n    } else if (event.code === Keys.Home) {\n      this.updateTabindex(0);\n    } else if (event.code === Keys.End) {\n      this.updateTabindex(this.focusableItems.length - 1);\n    }\n    super.handleKeyboardEvent(event);\n  }\n\n  override setClickedItemCurrent(event: any) {\n    let position: number;\n\n    if (this.focusableItems[0].nativeElement) {\n      position = this.focusableItems.map(item => item.nativeElement).indexOf(event.target);\n    } else {\n      position = this.focusableItems.indexOf(event.target);\n    }\n\n    if (position > -1) {\n      this.updateTabindex(position);\n    }\n    super.setClickedItemCurrent(event);\n  }\n\n  protected override initializeFocus() {\n    if (this.focusableItems && this.focusableItems.length) {\n      this.focusableItems.forEach(item => {\n        this.setTabindex(item, -1);\n      });\n\n      // It is possible that the focus was on an element, whose index is no longer available.\n      // This can happen when some of the focusable elements are being removed.\n      // In such cases, the new focus is initialized on the last focusable element.\n      if (this.current >= this.focusableItems.length) {\n        this.current = this.focusableItems.length - 1;\n      }\n      if (!this.disabled && this.currentItem) {\n        this.setTabindex(this.currentItem, 0);\n      }\n    }\n    super.initializeFocus();\n  }\n\n  private updateTabindex(newIndex: number) {\n    this.setTabindex(this.currentItem, -1);\n    this.setTabindex(this.focusableItems[newIndex], 0);\n  }\n\n  private setTabindex(item: FocusableItem, value: number) {\n    if (item instanceof HTMLElement) {\n      this.renderer.setAttribute(item, 'tabindex', value.toString());\n    } else {\n      this.renderer.setAttribute(item.nativeElement, 'tabindex', value.toString());\n    }\n  }\n}\n"]}