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* Copyright (c) Siemens 2016 - 2026
* SPDX-License-Identifier: MIT
*/
import {
Component,
computed,
EnvironmentInjector,
inject,
Injector,
input,
isSignal,
model,
OnDestroy,
OnInit,
output,
OutputRefSubscription,
signal,
viewChild,
ViewContainerRef
} from '@angular/core';
import { SiActionDialogService } from '@siemens/element-ng/action-modal';
import { SiTranslatePipe, t } from '@siemens/element-translate-ng/translate';
import { Subscription } from 'rxjs';
import {
Widget,
WidgetConfig,
WidgetConfigStatus,
WidgetInstanceEditor,
WidgetInstanceEditorWizard,
WidgetInstanceEditorWizardState
} from '../../model/widgets.model';
import { setupWidgetEditor } from '../../widget-loader';
/**
* The Dialog component is utilized when editing a widget instance within a dashboard.
* It dynamically loads and creates the associated widget editor and incorporates it
* into its content. The dialog component is accountable for interacting with the dashboard
* and offers options for saving changes or terminating the editing process.
*/
@Component({
selector: 'si-widget-instance-editor-dialog',
imports: [SiTranslatePipe],
templateUrl: './si-widget-instance-editor-dialog.component.html',
styleUrl: './si-widget-instance-editor-dialog.component.scss'
})
export class SiWidgetInstanceEditorDialogComponent implements OnInit, OnDestroy {
/**
* Input for the widget instance configuration. It is used to populate the
* widget editor.
*/
readonly widgetConfig = model.required<WidgetConfig>();
/**
* Input for the widget definition. It is required to retrieve the component
* factory to instantiate the widget editor.
*/
readonly widget = input.required<Widget>();
/**
* Emits the edited widget instance configuration if the user confirms by
* saving, or `undefined` if the user cancels the dialog.
*/
readonly closed = output<WidgetConfig | undefined>();
/**
* Emits when the editor instantiation is completed.
*/
readonly editorSetupCompleted = output<void>();
protected readonly editorHost = viewChild.required('editorHost', { read: ViewContainerRef });
/** Indicates if the current config is valid or not. If invalid, the save button will be disabled. */
protected readonly invalidConfig = signal(false);
protected readonly showNextButton = computed(() =>
this.editorWizardState() !== undefined ? true : false
);
protected readonly disableNextButton = computed(() => {
const wizardState = this.editorWizardState();
if (!wizardState) {
return true;
} else if (!wizardState.hasNext) {
return true;
} else if (wizardState.disableNext !== undefined) {
return wizardState.disableNext;
} else {
return false;
}
});
protected readonly showPreviousButton = computed(() => !!this.editorWizardState());
protected readonly disablePreviousButton = computed(() => {
const wizardState = this.editorWizardState();
return wizardState ? !wizardState.hasPrevious : true;
});
protected labelSave = t(() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.SAVE:Save`);
protected labelCancel = t(() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.CANCEL:Cancel`);
protected labelPrevious = t(() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.PREVIOUS:Previous`);
protected labelNext = t(() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.NEXT:Next`);
protected labelDialogMessage = t(
() =>
$localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.DISCARD_CONFIG_CHANGE_DIALOG.MESSAGE:The widget configuration changed. Do you want to discard the changes?`
);
protected labelDialogHeading = t(
() =>
$localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.DISCARD_CONFIG_CHANGE_DIALOG.HEADING:Widget configuration changed`
);
protected labelDialogSave = t(
() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.DISCARD_CONFIG_CHANGE_DIALOG.SAVE:Save`
);
protected labelDialogDiscard = t(
() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.DISCARD_CONFIG_CHANGE_DIALOG.DISCARD:Discard`
);
protected labelDialogCancel = t(
() => $localize`:@@DASHBOARD.WIDGET_EDITOR_DIALOG.DISCARD_CONFIG_CHANGE_DIALOG.CANCEL:Cancel`
);
/**
* Marks the widget configuration as modified. Is set when widget editor instance
* emits configChange events. Triggers edit discard confirmation dialog when widget config
* is modified but not dialog is canceled.
* */
private readonly widgetConfigModified = signal(false);
private widgetInstanceEditor?: WidgetInstanceEditor;
private readonly editorWizardState = signal<WidgetInstanceEditorWizardState | undefined>(
undefined
);
private subscriptions: Subscription[] | OutputRefSubscription[] = [];
private injector = inject(Injector);
private envInjector = inject(EnvironmentInjector);
private dialogService = inject(SiActionDialogService);
ngOnInit(): void {
setupWidgetEditor(
this.widget().componentFactory,
this.editorHost(),
this.injector,
this.envInjector
).subscribe(componentRef => {
this.widgetInstanceEditor = componentRef.instance;
Iif (isSignal(this.widgetInstanceEditor.config)) {
componentRef.setInput('config', this.widgetConfig()!);
} else {
this.widgetInstanceEditor.config = this.widgetConfig()!;
}
// To be used by webcomponent wrapper
Iif ('statusChangesHandler' in this.widgetInstanceEditor) {
this.widgetInstanceEditor.statusChangesHandler = this.handleStatusChanges.bind(this);
}
Iif (this.widgetInstanceEditor.statusChanges) {
this.subscriptions.push(
this.widgetInstanceEditor.statusChanges.subscribe(statusChanges =>
this.handleStatusChanges(statusChanges)
) as Subscription
);
I} else if (this.widgetInstanceEditor.configChange) {
this.subscriptions.push(
this.widgetInstanceEditor.configChange.subscribe(() =>
this.widgetConfigModified.set(true)
) as Subscription
);
}
Iif (this.isEditorWizard(this.widgetInstanceEditor)) {
this.editorWizardState.set(this.widgetInstanceEditor.state);
if (this.widgetInstanceEditor.stateChange) {
this.subscriptions.push(
this.widgetInstanceEditor.stateChange.subscribe(state => {
this.editorWizardState.set(state);
}) as Subscription
);
}
}
this.editorSetupCompleted.emit();
});
}
ngOnDestroy(): void {
this.tearDownEditor();
}
protected onCancel(): void {
if (!this.widgetConfigModified()) {
this.closed.emit(undefined);
} else E{
this.dialogService
.showActionDialog({
type: 'edit-discard',
disableSave: this.invalidConfig(),
message: this.labelDialogMessage,
heading: this.labelDialogHeading,
saveBtnName: this.labelDialogSave,
discardBtnName: this.labelDialogDiscard,
cancelBtnName: this.labelDialogCancel,
disableSaveMessage: this.labelDialogMessage,
disableSaveDiscardBtnName: this.labelDialogDiscard
})
.subscribe(result => {
if (result === 'discard') {
this.closed.emit(undefined);
} else if (result === 'save') {
this.closed.emit(this.widgetConfig());
}
});
}
}
protected onNext(): void {
if (this.isEditorWizard(this.widgetInstanceEditor)) {
this.widgetInstanceEditor.next();
this.editorWizardState.set(this.widgetInstanceEditor.state);
}
}
protected onPrevious(): void {
if (this.isEditorWizard(this.widgetInstanceEditor) && this.editorWizardState()?.hasPrevious) {
this.widgetInstanceEditor.previous();
this.editorWizardState.set(this.widgetInstanceEditor.state);
}
}
protected onSave(): void {
// In case the widget instance editor did not only change values of the config
// object, but set a new config object reference, we need to grab it and replace
// our local config object.
Iif (this.widgetInstanceEditor?.config) {
if (isSignal(this.widgetInstanceEditor.config)) {
this.widgetConfig.set(this.widgetInstanceEditor?.config() as WidgetConfig);
} else {
this.widgetConfig.set(this.widgetInstanceEditor?.config as WidgetConfig);
}
}
this.closed.emit(this.widgetConfig());
}
private tearDownEditor(): void {
this.editorWizardState.set(undefined);
this.widgetInstanceEditor = undefined;
this.subscriptions.forEach(s => s.unsubscribe());
this.subscriptions = [];
}
private isEditorWizard(
editor?: WidgetInstanceEditor | WidgetInstanceEditorWizard
): editor is WidgetInstanceEditorWizard {
return !!editor && 'state' in editor;
}
private handleStatusChanges(statusChanges: Partial<WidgetConfigStatus>): void {
if (statusChanges.invalid !== undefined) {
this.invalidConfig.set(statusChanges.invalid);
}
if (statusChanges.modified !== undefined) {
this.widgetConfigModified.set(statusChanges.modified);
}
}
}
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