Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | 1x 206x 206x 206x 206x 206x 221x 206x 206x 239x 20x 20x 206x 109x 109x | /**
* Copyright (c) Siemens 2016 - 2025
* SPDX-License-Identifier: MIT
*/
import {
booleanAttribute,
ChangeDetectorRef,
Component,
computed,
inject,
input,
OnChanges,
OnInit,
signal,
SimpleChanges
} from '@angular/core';
/**
* The SiWidgetBaseComponent<T> implements the timing for the skeleton loading
* indicator of widgets. It supports a generic value input property that represents
* the main value to be displayed by a widget. When the value is not set, the `showLoadingIndicator`
* changes after the `initialLoadingIndicatorDebounceTime` delay to `true` and subclasses
* should show the skeleton loading indicator.
*/
@Component({
template: ''
})
export abstract class SiWidgetBaseComponent<T> implements OnInit, OnChanges {
/**
* The main value to be displayed. If no value is set,
* the skeleton indicates the loading of the value. Disable
* the automatic loading mechanism by setting `SiWidgetBodyBaseComponent.disableAutoLoadingIndicator`.
*/
readonly value = input.required<T | undefined>();
/**
* Option to disable automatic start of skeleton loading indication.
*
* @defaultValue false
*/
readonly disableAutoLoadingIndicator = input(false, { transform: booleanAttribute });
/**
* Input to start and stop the skeleton loading indication.
*
* @defaultValue false
*/
readonly showLoadingIndicatorInput = input(false, {
// eslint-disable-next-line @angular-eslint/no-input-rename
alias: 'showLoadingIndicator',
transform: booleanAttribute
});
private readonly showLoadingIndicatorInternal = signal<boolean | undefined>(false);
readonly showLoadingIndicator = computed(() => {
return this.showLoadingIndicatorInternal() ?? this.showLoadingIndicatorInput();
});
/**
* Initial delay time in milliseconds before enabling loading indicator.
* Only used once initially during construction.
*
* @defaultValue 300
*/
readonly initialLoadingIndicatorDebounceTime = input(300);
protected cdRef = inject(ChangeDetectorRef);
protected loadingTimer?: ReturnType<typeof setTimeout>;
ngOnChanges(changes: SimpleChanges): void {
if (
!this.disableAutoLoadingIndicator() &&
!changes.value?.firstChange &&
changes.value?.currentValue
) {
Iif (this.loadingTimer) {
clearTimeout(this.loadingTimer);
this.loadingTimer = undefined;
}
this.showLoadingIndicatorInternal.set(false);
}
}
ngOnInit(): void {
if (!this.disableAutoLoadingIndicator() && !this.value()) {
this.loadingTimer = setTimeout(() => {
this.showLoadingIndicatorInternal.set(!this.value());
}, this.initialLoadingIndicatorDebounceTime());
}
}
}
|