iceye-angular-cesium-fork
Version:
Angular library for working with Cesium.
109 lines • 13.5 kB
JavaScript
import { filter, map } from 'rxjs/operators';
import { Injectable } from '@angular/core';
import { BehaviorSubject, Subject } from 'rxjs';
import { CesiumEvent } from '../map-events-mananger/consts/cesium-event.enum';
import { PickOptions } from '../map-events-mananger/consts/pickOptions.enum';
import { MapsManagerService } from '../maps-manager/maps-manager.service';
/**
* Manages entity selection service for any given mouse event and modifier
* the service will manage the list of selected items.
* check out the example
* you must provide the service yourself
*
* __Usage :__
* ```
* // provide the service in some component
* @Component({
* //...
* providers: [SelectionManagerService]
* }
*
* // Usage example:
* // init selection
* const selectedIndicator = ture; // optional default true, if true a boolean "selected" property will be added to the selected entity
* selectionManagerService.initSelection({ event: CesiumEvent.LEFT_CLICK,
* modifier: CesiumEventModifier.CTRL
* },selectedIndicator);
* // Get selected
* const selected = selectionManagerService.selected();
*
* // Or as observer
* const selected$ = selectionManagerService.selected$();
*
* ```
*
*/
export class SelectionManagerService {
constructor(mapsManager) {
this.mapsManager = mapsManager;
this.selectedEntitiesItems$ = new BehaviorSubject([]);
this.selectedEntitySubject$ = new Subject();
}
selectedEntities$() {
return this.selectedEntitiesItems$.asObservable();
}
selectedEntities() {
return this.selectedEntitiesItems$.getValue();
}
selectedEntity$() {
return this.selectedEntitySubject$;
}
toggleSelection(entity, addSelectedIndicator) {
const current = this.selectedEntities();
if (current.indexOf(entity) === -1) {
this.addToSelected(entity, addSelectedIndicator);
}
else {
this.removeSelected(entity, addSelectedIndicator);
}
}
addToSelected(entity, addSelectedIndicator) {
if (addSelectedIndicator) {
entity['selected'] = true;
}
const current = this.selectedEntities();
this.selectedEntitySubject$.next(entity);
this.selectedEntitiesItems$.next([...current, entity]);
}
removeSelected(entity, addSelectedIndicator) {
if (addSelectedIndicator) {
entity['selected'] = false;
}
const current = this.selectedEntities();
const entityIndex = current.indexOf(entity);
if (entityIndex !== -1) {
current.splice(entityIndex, 1);
this.selectedEntitiesItems$.next(current);
this.selectedEntitySubject$.next(entity);
}
}
initSelection(selectionOptions, addSelectedIndicator = true, eventPriority, mapId) {
const mapComponent = this.mapsManager.getMap(mapId);
if (!mapComponent) {
return;
}
this.mapEventsManagerService = mapComponent.getMapEventsManager();
if (!selectionOptions) {
Object.assign(selectionOptions, { event: CesiumEvent.LEFT_CLICK });
}
const eventSubscription = this.mapEventsManagerService.register({
event: selectionOptions.event,
pick: PickOptions.PICK_ONE,
modifier: selectionOptions.modifier,
entityType: selectionOptions.entityType,
priority: eventPriority,
});
eventSubscription.pipe(map(result => result.entities), filter(entities => entities && entities.length > 0))
.subscribe(entities => {
const entity = entities[0];
this.toggleSelection(entity, addSelectedIndicator);
});
}
}
SelectionManagerService.decorators = [
{ type: Injectable }
];
SelectionManagerService.ctorParameters = () => [
{ type: MapsManagerService }
];
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// optional default true, if true a boolean \"selected\" property will be added to the selected entity\n * selectionManagerService.initSelection({ event: CesiumEvent.LEFT_CLICK,\n * \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tmodifier: CesiumEventModifier.CTRL\n * \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t},selectedIndicator);\n * // Get selected\n * const selected = selectionManagerService.selected();\n *\n * // Or as observer\n * const selected$ = selectionManagerService.selected$();\n *\n * ```\n *\n */\n@Injectable()\nexport class SelectionManagerService {\n  selectedEntitiesItems$: BehaviorSubject<AcEntity[]> = new BehaviorSubject<AcEntity[]>([]);\n  selectedEntitySubject$: Subject<AcEntity> = new Subject<AcEntity>();\n  private mapEventsManagerService: MapEventsManagerService;\n\n  constructor(private mapsManager: MapsManagerService) {\n  }\n\n  selectedEntities$(): Observable<AcEntity[]> {\n    return this.selectedEntitiesItems$.asObservable();\n  }\n\n  selectedEntities(): AcEntity[] {\n    return this.selectedEntitiesItems$.getValue();\n  }\n\n  selectedEntity$() {\n    return this.selectedEntitySubject$;\n  }\n\n  toggleSelection(entity: AcEntity, addSelectedIndicator: boolean) {\n    const current = this.selectedEntities();\n    if (current.indexOf(entity) === -1) {\n      this.addToSelected(entity, addSelectedIndicator);\n    } else {\n      this.removeSelected(entity, addSelectedIndicator);\n    }\n  }\n\n  private addToSelected(entity: AcEntity, addSelectedIndicator: boolean) {\n    if (addSelectedIndicator) {\n      entity['selected'] = true;\n    }\n\n    const current = this.selectedEntities();\n    this.selectedEntitySubject$.next(entity);\n    this.selectedEntitiesItems$.next([...current, entity]);\n  }\n\n  private removeSelected(entity: AcEntity, addSelectedIndicator: boolean) {\n    if (addSelectedIndicator) {\n      entity['selected'] = false;\n    }\n\n    const current = this.selectedEntities();\n    const entityIndex = current.indexOf(entity);\n    if (entityIndex !== -1) {\n      current.splice(entityIndex, 1);\n      this.selectedEntitiesItems$.next(current);\n      this.selectedEntitySubject$.next(entity);\n    }\n  }\n\n  initSelection(selectionOptions?: SelectionOptions, addSelectedIndicator = true, eventPriority?: number, mapId?: string) {\n    const mapComponent = this.mapsManager.getMap(mapId);\n    if (!mapComponent) {\n      return;\n    }\n\n    this.mapEventsManagerService = mapComponent.getMapEventsManager();\n\n    if (!selectionOptions) {\n      Object.assign(selectionOptions, {event: CesiumEvent.LEFT_CLICK});\n    }\n\n    const eventSubscription = this.mapEventsManagerService.register({\n      event: selectionOptions.event,\n      pick: PickOptions.PICK_ONE,\n      modifier: selectionOptions.modifier,\n      entityType: selectionOptions.entityType,\n      priority: eventPriority,\n    });\n\n    eventSubscription.pipe(\n      map(result => result.entities),\n      filter(entities => entities && entities.length > 0))\n      .subscribe(entities => {\n        const entity = entities[0];\n        this.toggleSelection(entity, addSelectedIndicator);\n      });\n  }\n}\n"]}