import { OnDestroy } from '@angular/core';
import { DataGroup } from '../../resources/interface/data-groups';
import { BehaviorSubject, Observable, ReplaySubject, Subject } from 'rxjs';
import { Task } from '../../resources/interface/task';
import { LoggerService } from '../../logger/services/logger.service';
import { SnackBarService } from '../../snack-bar/services/snack-bar.service';
import { TranslateService } from '@ngx-translate/core';
import { Change, ChangedFields } from '../../data-fields/models/changed-fields';
import { FieldConverterService } from './field-converter.service';
import { TaskEventOutcome } from '../../event/model/event-outcomes/task-outcomes/task-event-outcome';
import { DataField } from '../../data-fields/models/abstract-data-field';
import { TaskFields } from '../model/task-fields';
import * as i0 from "@angular/core";
/**
 * Acts as a communication interface between the Component that renders Task content and it's parent Component.
 * Also provides some general functionality that is needed when working with task content.
 *
 * Notable example of a parent Component is the {@link AbstractTaskPanelComponent}.
 *
 * Notable example of a task content renderer is the {@link AbstractTaskContentComponent}.
 */
export declare abstract class TaskContentService implements OnDestroy {
    protected _fieldConverterService: FieldConverterService;
    protected _snackBarService: SnackBarService;
    protected _translate: TranslateService;
    protected _logger: LoggerService;
    static readonly FRONTEND_ACTIONS_KEY = "_frontend_actions";
    static readonly ACTION = "action";
    $shouldCreate: ReplaySubject<Array<DataGroup>>;
    $shouldCreateCounter: BehaviorSubject<number>;
    protected _task: Task;
    protected _taskDataReloadRequest$: Subject<Change>;
    protected _isExpanding$: BehaviorSubject<boolean>;
    protected _taskFieldsIndex: {
        [taskId: string]: TaskFields;
    };
    protected _referencedTaskAndCaseIds: {
        [caseId: string]: Array<string>;
    };
    protected constructor(_fieldConverterService: FieldConverterService, _snackBarService: SnackBarService, _translate: TranslateService, _logger: LoggerService);
    ngOnDestroy(): void;
    /**
     * @returns the Task object if set and `undefined` otherwise
     */
    abstract get task(): Task | undefined;
    /**
     * Setting a Task also emits it into the stream accessible by the [task$]{@link TaskContentService#task$} getter method.
     * @param task the Task that owns the content managed by this service
     */
    abstract set task(task: Task);
    /**
     * Stream returns a {@link Task} object every time this object is set.
     *
     * Use [task]{@link TaskContentService#task} setter method to set the Task.
     */
    abstract get task$(): Observable<Task>;
    /**
     * Stream that emits every time a data reload is requested.
     */
    get taskDataReloadRequest$(): Observable<Change>;
    get taskFieldsIndex(): {
        [p: string]: TaskFields;
    };
    set taskFieldsIndex(value: {
        [p: string]: TaskFields;
    });
    get referencedTaskAndCaseIds(): {
        [p: string]: Array<string>;
    };
    set referencedTaskAndCaseIds(value: {
        [p: string]: Array<string>;
    });
    /**
     * Whether the panel that the task content is contained in is currently expanding.
     *
     * If the task content is not contained in a panel, `isExpanding` will be always `false`.
     */
    get isExpanding(): boolean;
    /**
     * Changes the state of the task content to `expanding`.
     */
    expansionStarted(): void;
    /**
     * Changes the state of the task content to `not expanding`.
     */
    expansionFinished(): void;
    /**
     * Checks the validity of all data fields in the managed {@link Task}.
     *
     * If some of the fields are invalid touches them so their validation errors will appear (if set).
     * A snackbar will also be displayed to the user, informing them of the fact that the fields are invalid.
     * @returns whether the task is valid or not
     */
    validateTaskData(taskId?: string): boolean;
    /**
     * Finds invalid data of task
     *
     * @returns array of invalid datafields
     */
    getInvalidTaskData(): Array<DataField<any>>;
    validateDynamicEnumField(): boolean;
    /**
     * Changes the blocking state of all fields in the managed Task.
     * @param blockingState whether the field should be blocked or not
     */
    blockFields(blockingState: boolean): void;
    /**
     * Clears the assignee, start date and finish date from the managed Task.
     */
    updateStateData(eventOutcome: TaskEventOutcome): void;
    /**
     * Updates the properties of fields in the managed task based on a delta of changes from previous state.
     * @param chFields object containing the delta of the changes from the previous state
     */
    updateFromChangedFields(chFields: ChangedFields): void;
    protected updateField(chFields: ChangedFields, field: DataField<any>, frontendActions: Change, referenced?: boolean): void;
    protected isFieldInTask(taskId: string, changedField: string): boolean;
    protected getReferencedTaskId(changedField: string, chFields: ChangedFields): string;
    protected findTaskRefId(taskId: string, fields: {
        [fieldId: string]: DataField<any>;
    }): DataField<any>;
    static ɵfac: i0.ɵɵFactoryDeclaration<TaskContentService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TaskContentService>;
}