@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.
107 lines • 20.9 kB
JavaScript
import { FDragHandlerResult } from '../../f-drag-handler';
import { CalculateClosestInputRequest, GetAllCanBeConnectedInputsAndRectsRequest, CalculateConnectionLineByBehaviorRequest, GetConnectorAndRectRequest, MarkAllCanBeConnectedInputsRequest, UnmarkAllCanBeConnectedInputsRequest } from '../../../domain';
import { RectExtensions, RoundedRect } from '@foblex/2d';
import { FMediator } from '@foblex/mediator';
import { FComponentsStore } from '../../../f-storage';
export class FReassignConnectionDragHandler {
_fConnection;
fEventType = 'reassign-connection';
fData;
_fResult;
_fMediator;
_fComponentsStore;
_toConnectorRect = new RoundedRect();
get _fSnapConnection() {
return this._fComponentsStore.fSnapConnection;
}
_fOutputWithRect;
_fInputWithRect;
_canBeConnectedInputs = [];
get _fOutput() {
const result = this._fComponentsStore.fOutputs.find((x) => x.fId === this._fConnection.fOutputId);
if (!result) {
throw new Error('Connection output not found');
}
return result;
}
get _fInput() {
const result = this._fComponentsStore.fInputs.find((x) => x.fId === this._fConnection.fInputId);
if (!result) {
throw new Error('Connection input not found');
}
return result;
}
constructor(_injector, _fConnection) {
this._fConnection = _fConnection;
this._fResult = _injector.get(FDragHandlerResult);
this._fMediator = _injector.get(FMediator);
this._fComponentsStore = _injector.get(FComponentsStore);
this._toConnectorRect = RoundedRect.fromRect(RectExtensions.initialize(this._fConnection.line.point2.x, this._fConnection.line.point2.y));
this.fData = {
fConnectionId: this._fConnection.fId
};
}
prepareDragSequence() {
this._getAndMarkCanBeConnectedInputs();
this._initializeSnapConnection();
this._fOutputWithRect = this._fMediator.execute(new GetConnectorAndRectRequest(this._fOutput));
this._fInputWithRect = this._fMediator.execute(new GetConnectorAndRectRequest(this._fInput));
this._fResult.setData({
toConnectorRect: this._toConnectorRect,
canBeConnectedInputs: this._canBeConnectedInputs,
fConnection: this._fConnection
});
}
_getAndMarkCanBeConnectedInputs() {
this._canBeConnectedInputs = this._fMediator.execute(new GetAllCanBeConnectedInputsAndRectsRequest(this._fOutput));
this._fMediator.execute(new MarkAllCanBeConnectedInputsRequest(this._canBeConnectedInputs.map((x) => x.fConnector)));
}
_initializeSnapConnection() {
if (!this._fSnapConnection) {
return;
}
this._fSnapConnection.fOutputId = this._fConnection.fOutputId;
this._fSnapConnection.initialize();
}
onPointerMove(difference) {
const fClosestInput = this._findClosestInput(difference);
this._drawConnection(this._toConnectorRect.addPoint(difference), fClosestInput?.fConnector.fConnectableSide || this._fInputWithRect.fConnector.fConnectableSide);
if (this._fSnapConnection) {
this._drawSnapConnection(this._getClosestInputForSnapConnection(fClosestInput));
}
}
_drawConnection(difference, fSide) {
const line = this._getLineToPointer(difference, fSide);
this._fConnection.setLine(line, this._fOutputWithRect.fConnector.fConnectableSide, fSide);
this._fConnection.redraw();
}
_getLineToPointer(difference, fSide) {
return this._fMediator.execute(new CalculateConnectionLineByBehaviorRequest(this._fOutputWithRect.fRect, RoundedRect.fromRect(RectExtensions.initialize(difference.x, difference.y)), this._fConnection.fBehavior, this._fOutputWithRect.fConnector.fConnectableSide, fSide));
}
_drawSnapConnection(fClosestInput) {
if (fClosestInput) {
const line = this._getLineToClosestInput(fClosestInput);
this._fSnapConnection.show();
this._fSnapConnection.setLine(line, this._fOutputWithRect.fConnector.fConnectableSide, fClosestInput.fConnector.fConnectableSide);
this._fSnapConnection.redraw();
}
else {
this._fSnapConnection?.hide();
}
}
_getLineToClosestInput(fClosestInput) {
return this._fMediator.execute(new CalculateConnectionLineByBehaviorRequest(this._fOutputWithRect.fRect, fClosestInput.fRect, this._fSnapConnection.fBehavior, this._fOutputWithRect.fConnector.fConnectableSide, fClosestInput.fConnector.fConnectableSide));
}
_findClosestInput(difference) {
return this._fMediator.execute(new CalculateClosestInputRequest(this._toConnectorRect.addPoint(difference), this._canBeConnectedInputs));
}
_getClosestInputForSnapConnection(fClosestInput) {
return fClosestInput && fClosestInput.distance < this._fSnapConnection.fSnapThreshold ? fClosestInput : undefined;
}
onPointerUp() {
this._drawConnection(this._toConnectorRect, this._fInputWithRect.fConnector.fConnectableSide);
this._fSnapConnection?.hide();
this._fMediator.execute(new UnmarkAllCanBeConnectedInputsRequest(this._canBeConnectedInputs.map((x) => x.fConnector)));
}
}
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{ FDragHandlerResult, IFDragHandler } from '../../f-drag-handler';\nimport {\n  CalculateClosestInputRequest,\n  GetAllCanBeConnectedInputsAndRectsRequest,\n  CalculateConnectionLineByBehaviorRequest, GetConnectorAndRectRequest,\n  IConnectorAndRect, IClosestInput, MarkAllCanBeConnectedInputsRequest, UnmarkAllCanBeConnectedInputsRequest\n} from '../../../domain';\nimport { FConnectionBase, FSnapConnectionComponent } from '../../../f-connection';\nimport { EFConnectableSide, FConnectorBase, FNodeOutputDirective } from '../../../f-connectors';\nimport { ILine, IPoint, RectExtensions, RoundedRect } from '@foblex/2d';\nimport { FMediator } from '@foblex/mediator';\nimport { FComponentsStore } from '../../../f-storage';\nimport { IFReassignConnectionDragResult } from './i-f-reassign-connection-drag-result';\nimport { Injector } from '@angular/core';\n\nexport class FReassignConnectionDragHandler implements IFDragHandler {\n\n  public fEventType = 'reassign-connection';\n  public fData: any;\n\n  private readonly _fResult: FDragHandlerResult<IFReassignConnectionDragResult>;\n  private readonly _fMediator: FMediator;\n  private readonly _fComponentsStore: FComponentsStore;\n\n  private readonly _toConnectorRect = new RoundedRect();\n\n  private get _fSnapConnection(): FSnapConnectionComponent | undefined {\n    return this._fComponentsStore.fSnapConnection as FSnapConnectionComponent;\n  }\n\n  private _fOutputWithRect!: IConnectorAndRect;\n  private _fInputWithRect!: IConnectorAndRect;\n\n  private _canBeConnectedInputs: IConnectorAndRect[] = [];\n\n  private get _fOutput(): FConnectorBase {\n    const result = this._fComponentsStore.fOutputs.find((x) => x.fId === this._fConnection.fOutputId);\n    if (!result) {\n      throw new Error('Connection output not found');\n    }\n    return result;\n  }\n\n  private get _fInput(): FConnectorBase {\n    const result = this._fComponentsStore.fInputs.find((x) => x.fId === this._fConnection.fInputId);\n    if (!result) {\n      throw new Error('Connection input not found');\n    }\n    return result;\n  }\n\n  constructor(\n    _injector: Injector,\n    private _fConnection: FConnectionBase,\n  ) {\n    this._fResult = _injector.get(FDragHandlerResult);\n    this._fMediator = _injector.get(FMediator);\n    this._fComponentsStore = _injector.get(FComponentsStore);\n\n    this._toConnectorRect = RoundedRect.fromRect(\n      RectExtensions.initialize(this._fConnection.line.point2.x, this._fConnection.line.point2.y)\n    );\n    this.fData = {\n      fConnectionId: this._fConnection.fId\n    };\n  }\n\n  public prepareDragSequence(): void {\n    this._getAndMarkCanBeConnectedInputs();\n    this._initializeSnapConnection();\n\n    this._fOutputWithRect = this._fMediator.execute<IConnectorAndRect>(new GetConnectorAndRectRequest(this._fOutput));\n    this._fInputWithRect = this._fMediator.execute<IConnectorAndRect>(new GetConnectorAndRectRequest(this._fInput));\n\n    this._fResult.setData({\n      toConnectorRect: this._toConnectorRect,\n      canBeConnectedInputs: this._canBeConnectedInputs,\n      fConnection: this._fConnection\n    });\n  }\n\n  private _getAndMarkCanBeConnectedInputs(): void {\n    this._canBeConnectedInputs = this._fMediator.execute<IConnectorAndRect[]>(\n      new GetAllCanBeConnectedInputsAndRectsRequest(this._fOutput as FNodeOutputDirective)\n    );\n\n    this._fMediator.execute(\n      new MarkAllCanBeConnectedInputsRequest(this._canBeConnectedInputs.map((x) => x.fConnector))\n    );\n  }\n\n  private _initializeSnapConnection(): void {\n    if (!this._fSnapConnection) {\n      return;\n    }\n    this._fSnapConnection.fOutputId = this._fConnection.fOutputId;\n    this._fSnapConnection.initialize();\n  }\n\n  public onPointerMove(difference: IPoint): void {\n    const fClosestInput = this._findClosestInput(difference);\n\n    this._drawConnection(\n      this._toConnectorRect.addPoint(difference),\n      fClosestInput?.fConnector.fConnectableSide || this._fInputWithRect.fConnector.fConnectableSide\n    );\n    if (this._fSnapConnection) {\n      this._drawSnapConnection(this._getClosestInputForSnapConnection(fClosestInput));\n    }\n  }\n\n  private _drawConnection(difference: IPoint, fSide: EFConnectableSide): void {\n    const line = this._getLineToPointer(difference, fSide);\n    this._fConnection.setLine(line, this._fOutputWithRect.fConnector.fConnectableSide, fSide);\n    this._fConnection.redraw();\n  }\n\n  private _getLineToPointer(difference: IPoint, fSide: EFConnectableSide): ILine {\n    return this._fMediator.execute<ILine>(new CalculateConnectionLineByBehaviorRequest(\n        this._fOutputWithRect.fRect,\n        RoundedRect.fromRect(RectExtensions.initialize(difference.x, difference.y)),\n        this._fConnection.fBehavior,\n        this._fOutputWithRect.fConnector.fConnectableSide,\n        fSide\n      )\n    );\n  }\n\n  private _drawSnapConnection(fClosestInput: IClosestInput | undefined): void {\n    if (fClosestInput) {\n      const line = this._getLineToClosestInput(fClosestInput);\n      this._fSnapConnection!.show();\n      this._fSnapConnection!.setLine(line, this._fOutputWithRect.fConnector.fConnectableSide, fClosestInput.fConnector.fConnectableSide);\n      this._fSnapConnection!.redraw();\n    } else {\n      this._fSnapConnection?.hide();\n    }\n  }\n\n  private _getLineToClosestInput(fClosestInput: IClosestInput): ILine {\n    return this._fMediator.execute<ILine>(new CalculateConnectionLineByBehaviorRequest(\n      this._fOutputWithRect.fRect,\n      fClosestInput.fRect,\n      this._fSnapConnection!.fBehavior,\n      this._fOutputWithRect.fConnector.fConnectableSide,\n      fClosestInput.fConnector.fConnectableSide\n    ));\n  }\n\n  private _findClosestInput(difference: IPoint): IClosestInput | undefined {\n    return this._fMediator.execute<IClosestInput | undefined>(\n      new CalculateClosestInputRequest(\n        this._toConnectorRect.addPoint(difference),\n        this._canBeConnectedInputs,\n      )\n    );\n  }\n\n  private _getClosestInputForSnapConnection(fClosestInput: IClosestInput | undefined): IClosestInput | undefined {\n    return fClosestInput && fClosestInput.distance < this._fSnapConnection!.fSnapThreshold ? fClosestInput : undefined;\n  }\n\n  public onPointerUp(): void {\n    this._drawConnection(this._toConnectorRect, this._fInputWithRect.fConnector.fConnectableSide);\n    this._fSnapConnection?.hide();\n\n    this._fMediator.execute(\n      new UnmarkAllCanBeConnectedInputsRequest(this._canBeConnectedInputs.map((x) => x.fConnector))\n    );\n  }\n}\n"]}