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* Copyright bei
* Entwicklungs- und Pflegeverbund für das gemeinsame Fachverfahren gefa
*
*******************************************************************************/
import {
FocusableElementOwner,
FocusableRangeElementOwner,
FormControlStatus,
HasBadge,
HasLabel,
InvalidControlValue,
Item,
ItemGroup,
TreeItem,
TreeItemBasic,
WidgetKeySet,
WithBadge,
WithHighlight,
formControlStatusTypeHelper,
} from './util.types';
let WIDGET_COUNTER = 0;
export function isObject(value: unknown): value is Record<string, unknown> {
return typeof value === 'object' && value != null && !Array.isArray(value);
}
/** check if the value is of type HasLabel */
export function isLabled(item: unknown): item is HasLabel {
return isObject(item) && 'label' in item;
}
/** check if the value is of type Item */
export function isItem(item: unknown): item is Item {
return isObject(item) && 'label' in item && 'key' in item;
}
export function isItemGroup<T>(item: T | ItemGroup<T>): item is ItemGroup<T> {
return isObject(item) && 'items' in item && Array.isArray(item.items);
}
export function isTreeItem(item: unknown): item is TreeItem<unknown> {
return isTreeItemBasic(item);
}
export function isTreeItemBasic(item: unknown): item is TreeItemBasic<unknown> {
if (!isItem(item)) {
return false;
} else {
const treeItem: TreeItemBasic<unknown> = item;
return (
typeof treeItem.children === 'undefined' ||
Array.isArray(treeItem.children)
);
}
}
/** check if the value is of type HasBadge */
export function isBadge(item: unknown): item is HasBadge {
return isObject(item) && 'variant' in item && 'status' in item;
}
/** check if the value is of type WithHighlight */
export function isWithHighlight(item: unknown): item is WithHighlight {
return (
isObject(item) &&
isObject(item.highlight) &&
typeof item.highlight.variant === 'string' &&
typeof item.highlight.color === 'string'
);
}
/** check if the value is of type WithBadge */
export function isWithBagde(item: unknown): item is WithBadge {
return (
isObject(item) &&
'badge' in item &&
isBadge(item.badge) &&
isLabled(item.badge)
);
}
/** check if an element is of type FocusableElementOwner */
export function isFocusableElementOwner(
element: unknown,
): element is FocusableElementOwner {
return (
isObject(element) &&
typeof (element as unknown as FocusableElementOwner).focusChild ===
'function'
);
}
/** check if an element is of type FocusableRangeElementOwner */
export function isFocusableRangeElementOwner(
element: unknown,
): element is FocusableRangeElementOwner {
return (
isObject(element) &&
typeof (element as unknown as FocusableRangeElementOwner).focusRangeSlot ===
'function'
);
}
/** method to use as trackBy in ngFor */
export function itemTrack(item: Item): string {
return item.key + item.label;
}
let audioCtx: AudioContext | undefined;
/** predefined sounds to play */
export enum SoundType {
/** sound to play on error */
ERROR,
/** sound representing a successful action */
SUCCESS,
/** sound representing an appearance of a warning */
WARNING,
/** sound representing an appearance of a new information */
INFO,
}
/**
* play one of the predefined sounds
*
* @param type the predefined sound type
*/
export async function playSound(type: SoundType): Promise<void> {
await implPlaySound(type, false);
}
async function implPlaySound(
type: SoundType,
fromResume: boolean,
): Promise<void> {
if (audioCtx === undefined) {
try {
audioCtx = new AudioContext();
} catch (e) {
console.warn(
'Unable to play sound because no AudioContext is available.',
);
return;
}
}
/*
* Workaround for Firefox who starts in suspended mode and
* hence does not play the sound upon initial creation
* Current behavior:
* - FF: Starts with suspended => changes state to running => needs a small delay and is then ready
* - Chrome: Starts with running and does not enter this code block
* - Safar: Starts with suspended => changes state to running => could immediate play sound (would work also without this listener!)
*/
if (!fromResume && audioCtx.state === 'suspended') {
await audioCtx.resume();
await new Promise(r => setTimeout(r));
return implPlaySound(type, true);
}
if (type === SoundType.ERROR) {
const oscillator = audioCtx.createOscillator();
const gain = audioCtx.createGain();
oscillator.connect(gain);
gain.connect(audioCtx.destination);
oscillator.type = 'sine';
oscillator.frequency.value = 200;
oscillator.start();
const time = audioCtx.currentTime;
gain.gain.setTargetAtTime(0, time, 0.015);
oscillator.stop(time + 0.09);
}
if (type === SoundType.SUCCESS) {
const oscillator = audioCtx.createOscillator();
const gain = audioCtx.createGain();
oscillator.connect(gain);
gain.connect(audioCtx.destination);
oscillator.type = 'sine';
oscillator.frequency.value = 1200;
oscillator.start();
const time = audioCtx.currentTime;
gain.gain.setTargetAtTime(0, time, 0.08);
oscillator.stop(time + 0.6);
}
if (type === SoundType.WARNING) {
const oscillator = audioCtx.createOscillator();
const gain = audioCtx.createGain();
oscillator.connect(gain);
gain.connect(audioCtx.destination);
oscillator.type = 'triangle';
oscillator.frequency.value = 100;
oscillator.start();
const time = audioCtx.currentTime;
gain.gain.value = 5;
gain.gain.setTargetAtTime(0, time, 0.08);
oscillator.stop(time + 0.6);
}
if (type === SoundType.INFO) {
const oscillator = audioCtx.createOscillator();
const gain = audioCtx.createGain();
oscillator.connect(gain);
gain.connect(audioCtx.destination);
oscillator.type = 'triangle';
oscillator.frequency.value = 500;
oscillator.start();
const time = audioCtx.currentTime;
gain.gain.setTargetAtTime(0, time, 0.08);
oscillator.stop(time + 0.6);
}
}
/**
* function to flip the given value in the set
*
* @param the original set
* @param the value to add/remove from the set
*/
export function flipSetValue<T>(set: ReadonlySet<T>, value: T): ReadonlySet<T> {
if (set.has(value)) {
return new Set([...set].filter(v => v !== value));
} else {
return new Set([...set, value]);
}
}
/**
* create a set of ids to use for widgets and parts of it
*
* @param the prefix to use
*/
export function createWidgetKeySet(prefix: string): WidgetKeySet {
const baseKey = prefix + '-' + (WIDGET_COUNTER++).toString();
const widgetKey = baseKey + '-widget';
const labelKey = baseKey + '-label';
const errorKey = baseKey + '-error';
return { baseKey, widgetKey, labelKey, errorKey };
}
/**
* Check whether a FormControlStatus represents an "ok" state, i.e. has no errors or other messages set.
* @param status the status to check
* @returns `true` if the status represents an OK state
*/
export function isStatusOk(status: Readonly<FormControlStatus>): boolean {
// status is "ok" if no entry contains any messages
for (const entry of formControlStatusTypeHelper) {
if (status[entry]?.length) {
return false;
}
}
return true;
}
export function isInvalidControlValue(
value: unknown,
): value is InvalidControlValue {
if (isObject(value)) {
const candidate: InvalidControlValue =
value as unknown as InvalidControlValue;
return (
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition -- need to check the discriminator of the object, the casting does not guarantee typesafety
candidate.kind === 'InvalidControlInput' &&
typeof candidate.rawValue === 'string'
);
} else {
return false;
}
}
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