@foblex/flow
Version:
An Angular library designed to simplify the creation and manipulation of dynamic flow. Provides components for flows, nodes, and connections, automating node manipulation and inter-node connections.
92 lines • 15.3 kB
JavaScript
import { __decorate } from "tslib";
import { Point, RectExtensions } from '@foblex/2d';
import { FindInputAtPositionRequest } from './find-input-at-position.request';
import { inject, Injectable } from '@angular/core';
import { BrowserService } from '@foblex/platform';
import { FExecutionRegister, FMediator } from '@foblex/mediator';
import { FComponentsStore } from '../../../f-storage';
import { CalculateClosestInputRequest } from '../calculate-closest-input';
import * as i0 from "@angular/core";
let FindInputAtPositionExecution = class FindInputAtPositionExecution {
_fMediator = inject(FMediator);
_fComponentsStore = inject(FComponentsStore);
_fBrowser = inject(BrowserService);
get _transform() {
return this._fComponentsStore.fCanvas.transform;
}
get _fHost() {
return this._fComponentsStore.fFlow.hostElement;
}
get _fNodes() {
return this._fComponentsStore.fNodes;
}
get _fSnapConnection() {
return this._fComponentsStore.fSnapConnection;
}
handle(payload) {
const fInputs = this._findInputsAtPosition(payload);
return fInputs.length > 0 ? fInputs[0] : undefined;
}
_findInputsAtPosition(request) {
const result = [];
result.push(...this._getConnectableInputsAtPosition(request));
const fClosestInput = this._calculateClosetInput(request);
if (fClosestInput) {
result.unshift(fClosestInput.fConnector);
}
const fInput = this._getFirstConnectableInputOfNodeAtPosition(request);
if (fInput) {
result.push(fInput);
}
return result;
}
_getConnectableInputsAtPosition(request) {
return request.canBeConnectedInputs.filter((x) => {
return RectExtensions.isIncludePoint(x.fRect, this._getPointInFlow(request.pointerPosition));
}).map((x) => x.fConnector);
}
_getPointInFlow(position) {
return Point.fromPoint(position)
.elementTransform(this._fHost)
.sub(this._transform.scaledPosition).sub(this._transform.position)
.div(this._transform.scale);
}
//if the closest input is valid, return it
_calculateClosetInput(request) {
if (!this._fSnapConnection) {
return undefined;
}
const fClosestInput = this._fMediator.execute(new CalculateClosestInputRequest(this._getPointInFlow(request.pointerPosition), request.canBeConnectedInputs));
return this._isValidClosestInput(fClosestInput) ? fClosestInput : undefined;
}
_isValidClosestInput(fClosestInput) {
return !!fClosestInput && fClosestInput.distance < this._fSnapConnection.fSnapThreshold;
}
//if node placed in position and fConnectOnNode is true, return the first connectable input of the node
_getFirstConnectableInputOfNodeAtPosition(request) {
return this._getElementsFromPoint(request.pointerPosition)
.map((x) => this._findConnectableNode(x))
.filter((x) => !!x)
.map((x) => this._findFirstConnectableInputOfNode(request.canBeConnectedInputs, x))
.find((x) => !!x);
}
_getElementsFromPoint(position) {
return this._fBrowser.document.elementsFromPoint(position.x, position.y);
}
_findConnectableNode(element) {
return this._fNodes.find((x) => x.isContains(element) && x.fConnectOnNode);
}
_findFirstConnectableInputOfNode(connectableInputs, fNode) {
return connectableInputs.find((x) => x.fConnector.fNodeId === fNode.fId)?.fConnector;
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: FindInputAtPositionExecution, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: FindInputAtPositionExecution });
};
FindInputAtPositionExecution = __decorate([
FExecutionRegister(FindInputAtPositionRequest)
], FindInputAtPositionExecution);
export { FindInputAtPositionExecution };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: FindInputAtPositionExecution, decorators: [{
type: Injectable
}] });
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{ IPoint, ITransformModel, Point, RectExtensions } from '@foblex/2d';\nimport { FindInputAtPositionRequest } from './find-input-at-position.request';\nimport { inject, Injectable } from '@angular/core';\nimport { BrowserService } from '@foblex/platform';\nimport { FExecutionRegister, FMediator, IExecution } from '@foblex/mediator';\nimport { FConnectorBase } from '../../../f-connectors';\nimport { FNodeBase } from '../../../f-node';\nimport { FComponentsStore } from '../../../f-storage';\nimport { IClosestInput } from '../i-closest-input';\nimport { CalculateClosestInputRequest } from '../calculate-closest-input';\nimport { FSnapConnectionComponent } from '../../../f-connection';\nimport { IConnectorAndRect } from '../i-connector-and-rect';\n\n@Injectable()\n@FExecutionRegister(FindInputAtPositionRequest)\nexport class FindInputAtPositionExecution\n  implements IExecution<FindInputAtPositionRequest, FConnectorBase | undefined> {\n\n  private _fMediator = inject(FMediator);\n  private _fComponentsStore = inject(FComponentsStore);\n  private _fBrowser = inject(BrowserService);\n\n  private get _transform(): ITransformModel {\n    return this._fComponentsStore.fCanvas!.transform;\n  }\n\n  private get _fHost(): HTMLElement {\n    return this._fComponentsStore.fFlow!.hostElement;\n  }\n\n  private get _fNodes(): FNodeBase[] {\n    return this._fComponentsStore.fNodes;\n  }\n\n  private get _fSnapConnection(): FSnapConnectionComponent | undefined {\n    return this._fComponentsStore.fSnapConnection as FSnapConnectionComponent;\n  }\n\n  public handle(payload: FindInputAtPositionRequest): FConnectorBase | undefined {\n    const fInputs = this._findInputsAtPosition(payload,);\n    return fInputs.length > 0 ? fInputs[ 0 ] : undefined;\n  }\n\n  private _findInputsAtPosition(request: FindInputAtPositionRequest): FConnectorBase[] {\n    const result: FConnectorBase[] = [];\n\n    result.push(...this._getConnectableInputsAtPosition(request));\n\n    const fClosestInput = this._calculateClosetInput(request);\n    if (fClosestInput) {\n      result.unshift(fClosestInput.fConnector);\n    }\n\n    const fInput = this._getFirstConnectableInputOfNodeAtPosition(request);\n    if (fInput) {\n      result.push(fInput);\n    }\n\n    return result;\n  }\n\n  private _getConnectableInputsAtPosition(request: FindInputAtPositionRequest): FConnectorBase[] {\n    return request.canBeConnectedInputs.filter((x) => {\n      return RectExtensions.isIncludePoint(x.fRect, this._getPointInFlow(request.pointerPosition));\n    }).map((x) => x.fConnector);\n  }\n\n  private _getPointInFlow(position: IPoint): IPoint {\n    return Point.fromPoint(position)\n      .elementTransform(this._fHost)\n      .sub(this._transform.scaledPosition).sub(this._transform.position)\n      .div(this._transform.scale);\n  }\n\n  //if the closest input is valid, return it\n  private _calculateClosetInput(request: FindInputAtPositionRequest): IClosestInput | undefined {\n    if (!this._fSnapConnection) {\n      return undefined;\n    }\n\n    const fClosestInput = this._fMediator.execute<IClosestInput | undefined>(\n      new CalculateClosestInputRequest(this._getPointInFlow(request.pointerPosition), request.canBeConnectedInputs)\n    );\n\n    return this._isValidClosestInput(fClosestInput) ? fClosestInput : undefined;\n  }\n\n  private _isValidClosestInput(fClosestInput: IClosestInput | undefined): boolean {\n    return !!fClosestInput && fClosestInput.distance < this._fSnapConnection!.fSnapThreshold;\n  }\n\n  //if node placed in position and fConnectOnNode is true, return the first connectable input of the node\n  private _getFirstConnectableInputOfNodeAtPosition(request: FindInputAtPositionRequest): FConnectorBase | undefined {\n    return this._getElementsFromPoint(request.pointerPosition)\n      .map((x) => this._findConnectableNode(x))\n      .filter((x) => !!x)\n      .map((x) => this._findFirstConnectableInputOfNode(request.canBeConnectedInputs, x))\n      .find((x) => !!x);\n  }\n\n  private _getElementsFromPoint(position: IPoint): HTMLElement[] {\n    return this._fBrowser.document.elementsFromPoint(position.x, position.y) as HTMLElement[];\n  }\n\n  private _findConnectableNode(element: HTMLElement): FNodeBase | undefined {\n    return this._fNodes.find((x) => x.isContains(element) && x.fConnectOnNode);\n  }\n\n  private _findFirstConnectableInputOfNode(connectableInputs: IConnectorAndRect[], fNode: FNodeBase): FConnectorBase | undefined {\n    return connectableInputs.find((x) => x.fConnector.fNodeId === fNode.fId)?.fConnector\n  }\n}\n"]}