@microsoft/windows-admin-center-sdk
Version:
Microsoft - Windows Admin Center Shell
130 lines • 17.7 kB
JavaScript
import { __decorate, __metadata } from "tslib";
import { Directive, HostListener, Injector } from '@angular/core';
import { Debounce } from '@microsoft/windows-admin-center-sdk/core/base/decorators/debounce.decorators';
import { KeyCode } from '@microsoft/windows-admin-center-sdk/core/data/accessibility-manager';
import { LogLevel } from '@microsoft/windows-admin-center-sdk/core/diagnostics/log-level';
import { Dom } from '@microsoft/windows-admin-center-sdk/core/dom/dom';
import { CoreBaseComponent } from '../common/base.component';
import { TooltipHostInstance } from './tooltip-host-instance';
import * as i0 from "@angular/core";
export class TooltipZoneDirective extends CoreBaseComponent {
constructor(injector) {
super(injector);
this.isViewLoaded = false;
this.isObserving = false;
}
/**
* The source name to use for logging
*/
get logSourceName() {
return 'TooltipZoneDirective';
}
onShortcut(event) {
if (event.keyCode === KeyCode.F1 && event.altKey) {
if (this.tooltipDirective) {
if (!this.tooltipDirective.shown) {
this.tooltipDirective.show(true);
event.stopImmediatePropagation();
}
else {
this.tooltipDirective.hide();
}
}
}
}
onFocusChange() {
// The tooltip is using a template, handle the focusout event properly if template has tab index
if (this.tooltipDirective) {
event.stopImmediatePropagation();
if (!TooltipHostInstance.activeHost.isFocused) {
this.tooltipDirective.hide();
}
}
}
ngOnInit() {
this.mutationObserver = new MutationObserver(mutations => {
mutations.forEach(() => {
/* Observe when a node is added or removed. If this occurs then reset which element
will have the aria-keyshortcuts attribute so the first focusable element will only
have it.*/
this.unsetAriaShortcutAttribute();
this.setAriaShortcutAttribute();
});
});
}
ngAfterViewInit() {
this.isViewLoaded = true;
this.startObserving();
}
ngOnDestroy() {
this.stopObserving();
this.unsetAriaShortcutAttribute();
}
registerTooltipDirective(tooltipDirective) {
this.tooltipDirective = tooltipDirective;
this.setAriaShortcutAttribute();
this.startObserving();
}
unregisterTooltipDirective() {
this.tooltipDirective = null;
this.unsetAriaShortcutAttribute();
this.stopObserving();
}
startObserving() {
// Only start observing if there is a tooltip associated with this zone
// and the view has had the initial load.
if (this.tooltipDirective && this.isViewLoaded && !this.isObserving && this.mutationObserver) {
this.isObserving = true;
this.mutationObserver.observe(this.hostElement.nativeElement, {
childList: true,
subtree: true
});
}
}
stopObserving() {
if (this.mutationObserver && this.isObserving) {
this.mutationObserver.disconnect();
this.isObserving = false;
}
}
// Add debounce to allow the content of the tooltip zone to load before finding a focusable element
setAriaShortcutAttribute() {
this.focusableZoneElement = Dom.getFirstElement(this.hostElement.nativeElement, element => Dom.isFocusPossible(element), element => !!element.getAttribute('smeTooltipZone'));
if (this.focusableZoneElement) {
this.focusableZoneElement.setAttribute('aria-keyshortcuts', this.strings.MsftSmeShell.Angular.TooltipZone.Aria.keyShortcuts);
}
else {
this.log('A tooltip zone must have a child element that is focusable for keyboard accessibility', LogLevel.Error, { TooltipZone: this.hostElement.nativeElement });
}
}
unsetAriaShortcutAttribute() {
if (this.focusableZoneElement) {
this.focusableZoneElement.removeAttribute('aria-keyshortcuts');
this.focusableZoneElement = null;
}
}
}
/** @nocollapse */ TooltipZoneDirective.ɵfac = function TooltipZoneDirective_Factory(t) { return new (t || TooltipZoneDirective)(i0.ɵɵdirectiveInject(i0.Injector)); };
/** @nocollapse */ TooltipZoneDirective.ɵdir = /** @pureOrBreakMyCode */ i0.ɵɵdefineDirective({ type: TooltipZoneDirective, selectors: [["", "smeTooltipZone", ""]], hostBindings: function TooltipZoneDirective_HostBindings(rf, ctx) { if (rf & 1) {
i0.ɵɵlistener("keydown", function TooltipZoneDirective_keydown_HostBindingHandler($event) { return ctx.onShortcut($event); })("focusout", function TooltipZoneDirective_focusout_HostBindingHandler() { return ctx.onFocusChange(); });
} }, exportAs: ["smeTooltipZone"], features: [i0.ɵɵInheritDefinitionFeature] });
__decorate([
Debounce(),
__metadata("design:type", Function),
__metadata("design:paramtypes", []),
__metadata("design:returntype", void 0)
], TooltipZoneDirective.prototype, "setAriaShortcutAttribute", null);
(function () { (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(TooltipZoneDirective, [{
type: Directive,
args: [{
selector: '[smeTooltipZone]',
exportAs: 'smeTooltipZone'
}]
}], function () { return [{ type: i0.Injector }]; }, { onShortcut: [{
type: HostListener,
args: ['keydown', ['$event']]
}], onFocusChange: [{
type: HostListener,
args: ['focusout']
}], setAriaShortcutAttribute: [] }); })();
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{\r\n    AfterViewInit,\r\n    Directive,\r\n    HostListener,\r\n    Injector,\r\n    OnDestroy,\r\n    OnInit\r\n} from '@angular/core';\r\nimport { Debounce } from '@microsoft/windows-admin-center-sdk/core/base/decorators/debounce.decorators';\r\nimport { KeyCode } from '@microsoft/windows-admin-center-sdk/core/data/accessibility-manager';\r\nimport { LogLevel } from '@microsoft/windows-admin-center-sdk/core/diagnostics/log-level';\r\nimport { Dom } from '@microsoft/windows-admin-center-sdk/core/dom/dom';\r\nimport { CoreBaseComponent } from '../common/base.component';\r\nimport { TooltipHostInstance } from './tooltip-host-instance';\r\nimport { TooltipDirective } from './tooltip.directive';\r\n@Directive({\r\n    selector: '[smeTooltipZone]',\r\n    exportAs: 'smeTooltipZone'\r\n})\r\nexport class TooltipZoneDirective extends CoreBaseComponent implements OnInit, AfterViewInit, OnDestroy {\r\n\r\n    /**\r\n     * The source name to use for logging\r\n     */\r\n    protected get logSourceName() {\r\n        return 'TooltipZoneDirective';\r\n    }\r\n\r\n    private tooltipDirective: TooltipDirective;\r\n    private focusableZoneElement: HTMLElement;\r\n    private mutationObserver: MutationObserver;\r\n    private isViewLoaded = false;\r\n    private isObserving = false;\r\n\r\n    @HostListener('keydown', ['$event'])\r\n    public onShortcut(event: KeyboardEvent): void {\r\n        if (event.keyCode === KeyCode.F1 && event.altKey) {\r\n            if (this.tooltipDirective) {\r\n                if (!this.tooltipDirective.shown) {\r\n                    this.tooltipDirective.show(true);\r\n                    event.stopImmediatePropagation();\r\n                } else {\r\n                    this.tooltipDirective.hide();\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    @HostListener('focusout')\r\n    public onFocusChange(): void {\r\n        // The tooltip is using a template, handle the focusout event properly if template has tab index\r\n        if (this.tooltipDirective) {\r\n            event.stopImmediatePropagation();\r\n            if (!TooltipHostInstance.activeHost.isFocused) {\r\n                this.tooltipDirective.hide();\r\n            }\r\n        }\r\n    }\r\n\r\n    constructor(injector: Injector) {\r\n        super(injector);\r\n    }\r\n\r\n    public ngOnInit() {\r\n        this.mutationObserver = new MutationObserver(mutations => {\r\n            mutations.forEach(() => {\r\n                /*  Observe when a node is added or removed. If this occurs then reset which element\r\n                    will have the aria-keyshortcuts attribute so the first focusable element will only\r\n                    have it.*/\r\n                this.unsetAriaShortcutAttribute();\r\n                this.setAriaShortcutAttribute();\r\n            });\r\n        });\r\n    }\r\n\r\n    public ngAfterViewInit() {\r\n        this.isViewLoaded = true;\r\n        this.startObserving();\r\n    }\r\n\r\n    public ngOnDestroy() {\r\n        this.stopObserving();\r\n        this.unsetAriaShortcutAttribute();\r\n    }\r\n\r\n    public registerTooltipDirective(tooltipDirective: TooltipDirective) {\r\n        this.tooltipDirective = tooltipDirective;\r\n        this.setAriaShortcutAttribute();\r\n        this.startObserving();\r\n    }\r\n\r\n    public unregisterTooltipDirective() {\r\n        this.tooltipDirective = null;\r\n        this.unsetAriaShortcutAttribute();\r\n        this.stopObserving();\r\n    }\r\n\r\n    private startObserving() {\r\n        // Only start observing if there is a tooltip associated with this zone\r\n        // and the view has had the initial load.\r\n        if (this.tooltipDirective && this.isViewLoaded && !this.isObserving && this.mutationObserver) {\r\n            this.isObserving = true;\r\n            this.mutationObserver.observe(this.hostElement.nativeElement, {\r\n                childList: true,\r\n                subtree: true\r\n            });\r\n        }\r\n    }\r\n\r\n    private stopObserving() {\r\n        if (this.mutationObserver && this.isObserving) {\r\n            this.mutationObserver.disconnect();\r\n            this.isObserving = false;\r\n        }\r\n    }\r\n\r\n    // Add debounce to allow the content of the tooltip zone to load before finding a focusable element\r\n    @Debounce()\r\n    private setAriaShortcutAttribute() {\r\n        this.focusableZoneElement = Dom.getFirstElement(\r\n            <HTMLElement>this.hostElement.nativeElement,\r\n            element => Dom.isFocusPossible(element),\r\n            element => !!element.getAttribute('smeTooltipZone')\r\n        );\r\n\r\n        if (this.focusableZoneElement) {\r\n            this.focusableZoneElement.setAttribute('aria-keyshortcuts', this.strings.MsftSmeShell.Angular.TooltipZone.Aria.keyShortcuts);\r\n        } else {\r\n            this.log(\r\n                'A tooltip zone must have a child element that is focusable for keyboard accessibility',\r\n                LogLevel.Error,\r\n                { TooltipZone: this.hostElement.nativeElement }\r\n            );\r\n        }\r\n    }\r\n\r\n    private unsetAriaShortcutAttribute() {\r\n        if (this.focusableZoneElement) {\r\n            this.focusableZoneElement.removeAttribute('aria-keyshortcuts');\r\n            this.focusableZoneElement = null;\r\n        }\r\n    }\r\n}\r\n"]}