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JavaScript

/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { FlowchartConstants } from './ngx-flowchart.models';
import { of, Subject } from 'rxjs';
import { debounceTime } from 'rxjs/operators';
export class FcModelService {
/**
* @param {?} modelValidation
* @param {?} model
* @param {?} modelChanged
* @param {?} detectChangesSubject
* @param {?} selectedObjects
* @param {?} dropNode
* @param {?} createEdge
* @param {?} edgeAddedCallback
* @param {?} nodeRemovedCallback
* @param {?} edgeRemovedCallback
* @param {?} canvasHtmlElement
* @param {?} svgHtmlElement
*/
constructor(modelValidation, model, modelChanged, detectChangesSubject, selectedObjects, dropNode, createEdge, edgeAddedCallback, nodeRemovedCallback, edgeRemovedCallback, canvasHtmlElement, svgHtmlElement) {
this.connectorsRectInfos = {};
this.nodesHtmlElements = {};
this.canvasHtmlElement = null;
this.dragImage = null;
this.svgHtmlElement = null;
this.debouncer = new Subject();
this.modelValidation = modelValidation;
this.model = model;
this.modelChanged = modelChanged;
this.detectChangesSubject = detectChangesSubject;
this.canvasHtmlElement = canvasHtmlElement;
this.svgHtmlElement = svgHtmlElement;
this.modelValidation.validateModel(this.model);
this.selectedObjects = selectedObjects;
this.dropNode = dropNode || ((/**
* @return {?}
*/
() => { }));
this.createEdge = createEdge || ((/**
* @param {?} event
* @param {?} edge
* @return {?}
*/
(event, edge) => of(Object.assign({}, edge, { label: 'label' }))));
this.edgeAddedCallback = edgeAddedCallback || ((/**
* @return {?}
*/
() => { }));
this.nodeRemovedCallback = nodeRemovedCallback || ((/**
* @return {?}
*/
() => { }));
this.edgeRemovedCallback = edgeRemovedCallback || ((/**
* @return {?}
*/
() => { }));
this.connectors = new ConnectorsModel(this);
this.nodes = new NodesModel(this);
this.edges = new EdgesModel(this);
this.debouncer
.pipe(debounceTime(100))
.subscribe((/**
* @return {?}
*/
() => this.modelChanged.emit()));
}
/**
* @return {?}
*/
notifyModelChanged() {
this.debouncer.next();
}
/**
* @return {?}
*/
detectChanges() {
setTimeout((/**
* @return {?}
*/
() => {
this.detectChangesSubject.next();
}), 0);
}
/**
* @param {?} object
* @return {?}
*/
selectObject(object) {
if (this.isEditable()) {
if (this.selectedObjects.indexOf(object) === -1) {
this.selectedObjects.push(object);
}
}
}
/**
* @param {?} object
* @return {?}
*/
deselectObject(object) {
if (this.isEditable()) {
/** @type {?} */
const index = this.selectedObjects.indexOf(object);
if (index === -1) {
throw new Error('Tried to deselect an unselected object');
}
this.selectedObjects.splice(index, 1);
}
}
/**
* @param {?} object
* @return {?}
*/
toggleSelectedObject(object) {
if (this.isSelectedObject(object)) {
this.deselectObject(object);
}
else {
this.selectObject(object);
}
}
/**
* @param {?} object
* @return {?}
*/
isSelectedObject(object) {
return this.selectedObjects.indexOf(object) !== -1;
}
/**
* @return {?}
*/
selectAll() {
this.model.nodes.forEach((/**
* @param {?} node
* @return {?}
*/
node => {
if (!node.readonly) {
this.nodes.select(node);
}
}));
this.model.edges.forEach((/**
* @param {?} edge
* @return {?}
*/
edge => {
this.edges.select(edge);
}));
this.detectChanges();
}
/**
* @return {?}
*/
deselectAll() {
this.selectedObjects.splice(0, this.selectedObjects.length);
this.detectChanges();
}
/**
* @param {?} object
* @return {?}
*/
isEditObject(object) {
return this.selectedObjects.length === 1 &&
this.selectedObjects.indexOf(object) !== -1;
}
/**
* @private
* @param {?} x
* @param {?} y
* @param {?} rectBox
* @return {?}
*/
inRectBox(x, y, rectBox) {
return x >= rectBox.left && x <= rectBox.right &&
y >= rectBox.top && y <= rectBox.bottom;
}
/**
* @param {?} x
* @param {?} y
* @return {?}
*/
getItemInfoAtPoint(x, y) {
return {
node: this.getNodeAtPoint(x, y),
edge: this.getEdgeAtPoint(x, y)
};
}
/**
* @param {?} x
* @param {?} y
* @return {?}
*/
getNodeAtPoint(x, y) {
for (const node of this.model.nodes) {
/** @type {?} */
const element = this.nodes.getHtmlElement(node.id);
/** @type {?} */
const nodeElementBox = element.getBoundingClientRect();
if (x >= nodeElementBox.left && x <= nodeElementBox.right
&& y >= nodeElementBox.top && y <= nodeElementBox.bottom) {
return node;
}
}
return null;
}
/**
* @param {?} x
* @param {?} y
* @return {?}
*/
getEdgeAtPoint(x, y) {
/** @type {?} */
const element = document.elementFromPoint(x, y);
/** @type {?} */
const id = element.id;
/** @type {?} */
let edgeIndex = -1;
if (id) {
if (id.startsWith('fc-edge-path-')) {
edgeIndex = Number(id.substring('fc-edge-path-'.length));
}
else if (id.startsWith('fc-edge-label-')) {
edgeIndex = Number(id.substring('fc-edge-label-'.length));
}
}
if (edgeIndex > -1) {
return this.model.edges[edgeIndex];
}
return null;
}
/**
* @param {?} rectBox
* @return {?}
*/
selectAllInRect(rectBox) {
this.model.nodes.forEach((/**
* @param {?} value
* @return {?}
*/
(value) => {
/** @type {?} */
const element = this.nodes.getHtmlElement(value.id);
/** @type {?} */
const nodeElementBox = element.getBoundingClientRect();
if (!value.readonly) {
/** @type {?} */
const x = nodeElementBox.left + nodeElementBox.width / 2;
/** @type {?} */
const y = nodeElementBox.top + nodeElementBox.height / 2;
if (this.inRectBox(x, y, rectBox)) {
this.nodes.select(value);
}
else {
if (this.nodes.isSelected(value)) {
this.nodes.deselect(value);
}
}
}
}));
/** @type {?} */
const canvasElementBox = this.canvasHtmlElement.getBoundingClientRect();
this.model.edges.forEach((/**
* @param {?} value
* @return {?}
*/
(value) => {
/** @type {?} */
const start = this.edges.sourceCoord(value);
/** @type {?} */
const end = this.edges.destCoord(value);
/** @type {?} */
const x = (start.x + end.x) / 2 + canvasElementBox.left;
/** @type {?} */
const y = (start.y + end.y) / 2 + canvasElementBox.top;
if (this.inRectBox(x, y, rectBox)) {
this.edges.select(value);
}
else {
if (this.edges.isSelected(value)) {
this.edges.deselect(value);
}
}
}));
}
/**
* @return {?}
*/
deleteSelected() {
/** @type {?} */
const edgesToDelete = this.edges.getSelectedEdges();
edgesToDelete.forEach((/**
* @param {?} edge
* @return {?}
*/
(edge) => {
this.edges.delete(edge);
}));
/** @type {?} */
const nodesToDelete = this.nodes.getSelectedNodes();
nodesToDelete.forEach((/**
* @param {?} node
* @return {?}
*/
(node) => {
this.nodes.delete(node);
}));
}
/**
* @return {?}
*/
isEditable() {
return this.dropTargetId === undefined;
}
/**
* @return {?}
*/
isDropSource() {
return this.dropTargetId !== undefined;
}
/**
* @return {?}
*/
getDragImage() {
if (!this.dragImage) {
this.dragImage = new Image();
this.dragImage.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7';
this.dragImage.style.visibility = 'hidden';
}
return this.dragImage;
}
}
if (false) {
/** @type {?} */
FcModelService.prototype.modelValidation;
/** @type {?} */
FcModelService.prototype.model;
/**
* @type {?}
* @private
*/
FcModelService.prototype.detectChangesSubject;
/** @type {?} */
FcModelService.prototype.selectedObjects;
/** @type {?} */
FcModelService.prototype.connectorsRectInfos;
/** @type {?} */
FcModelService.prototype.nodesHtmlElements;
/** @type {?} */
FcModelService.prototype.canvasHtmlElement;
/** @type {?} */
FcModelService.prototype.dragImage;
/** @type {?} */
FcModelService.prototype.svgHtmlElement;
/** @type {?} */
FcModelService.prototype.dropNode;
/** @type {?} */
FcModelService.prototype.createEdge;
/** @type {?} */
FcModelService.prototype.edgeAddedCallback;
/** @type {?} */
FcModelService.prototype.nodeRemovedCallback;
/** @type {?} */
FcModelService.prototype.edgeRemovedCallback;
/** @type {?} */
FcModelService.prototype.dropTargetId;
/**
* @type {?}
* @private
*/
FcModelService.prototype.modelChanged;
/**
* @type {?}
* @private
*/
FcModelService.prototype.debouncer;
/** @type {?} */
FcModelService.prototype.connectors;
/** @type {?} */
FcModelService.prototype.nodes;
/** @type {?} */
FcModelService.prototype.edges;
}
/**
* @record
*/
function HtmlElementMap() { }
/**
* @record
*/
function ConnectorRectInfoMap() { }
/**
* @abstract
* @template T
*/
class AbstractFcModel {
/**
* @protected
* @param {?} modelService
*/
constructor(modelService) {
this.modelService = modelService;
}
/**
* @param {?} object
* @return {?}
*/
select(object) {
this.modelService.selectObject(object);
}
/**
* @param {?} object
* @return {?}
*/
deselect(object) {
this.modelService.deselectObject(object);
}
/**
* @param {?} object
* @return {?}
*/
toggleSelected(object) {
this.modelService.toggleSelectedObject(object);
}
/**
* @param {?} object
* @return {?}
*/
isSelected(object) {
return this.modelService.isSelectedObject(object);
}
/**
* @param {?} object
* @return {?}
*/
isEdit(object) {
return this.modelService.isEditObject(object);
}
}
if (false) {
/** @type {?} */
AbstractFcModel.prototype.modelService;
}
class ConnectorsModel extends AbstractFcModel {
/**
* @param {?} modelService
*/
constructor(modelService) {
super(modelService);
}
/**
* @param {?} connectorId
* @return {?}
*/
getConnector(connectorId) {
/** @type {?} */
const model = this.modelService.model;
for (const node of model.nodes) {
for (const connector of node.connectors) {
if (connector.id === connectorId) {
return connector;
}
}
}
}
/**
* @param {?} connectorId
* @return {?}
*/
getConnectorRectInfo(connectorId) {
return this.modelService.connectorsRectInfos[connectorId];
}
/**
* @param {?} connectorId
* @param {?} connectorRectInfo
* @return {?}
*/
setConnectorRectInfo(connectorId, connectorRectInfo) {
this.modelService.connectorsRectInfos[connectorId] = connectorRectInfo;
this.modelService.detectChanges();
}
/**
* @private
* @param {?} connectorId
* @param {?=} centered
* @return {?}
*/
_getCoords(connectorId, centered) {
/** @type {?} */
const connectorRectInfo = this.getConnectorRectInfo(connectorId);
/** @type {?} */
const canvas = this.modelService.canvasHtmlElement;
if (connectorRectInfo === null || connectorRectInfo === undefined || canvas === null) {
return { x: 0, y: 0 };
}
/** @type {?} */
let x = connectorRectInfo.type === FlowchartConstants.leftConnectorType ?
connectorRectInfo.nodeRectInfo.left() : connectorRectInfo.nodeRectInfo.right();
/** @type {?} */
let y = connectorRectInfo.nodeRectInfo.top() + connectorRectInfo.nodeRectInfo.height() / 2;
if (!centered) {
x -= connectorRectInfo.width / 2;
y -= connectorRectInfo.height / 2;
}
/** @type {?} */
const coords = {
x: Math.round(x),
y: Math.round(y)
};
return coords;
}
/**
* @param {?} connectorId
* @return {?}
*/
getCoords(connectorId) {
return this._getCoords(connectorId, false);
}
/**
* @param {?} connectorId
* @return {?}
*/
getCenteredCoord(connectorId) {
return this._getCoords(connectorId, true);
}
}
class NodesModel extends AbstractFcModel {
/**
* @param {?} modelService
*/
constructor(modelService) {
super(modelService);
}
/**
* @param {?} node
* @param {?} type
* @return {?}
*/
getConnectorsByType(node, type) {
return node.connectors.filter((/**
* @param {?} connector
* @return {?}
*/
(connector) => {
return connector.type === type;
}));
}
/**
* @private
* @param {?} node
* @param {?} connector
* @return {?}
*/
_addConnector(node, connector) {
node.connectors.push(connector);
try {
this.modelService.modelValidation.validateNode(node);
}
catch (error) {
node.connectors.splice(node.connectors.indexOf(connector), 1);
throw error;
}
}
/**
* @param {?} node
* @return {?}
*/
delete(node) {
if (this.isSelected(node)) {
this.deselect(node);
}
/** @type {?} */
const model = this.modelService.model;
/** @type {?} */
const index = model.nodes.indexOf(node);
if (index === -1) {
if (node === undefined) {
throw new Error('Passed undefined');
}
throw new Error('Tried to delete not existing node');
}
/** @type {?} */
const connectorIds = this.getConnectorIds(node);
for (let i = 0; i < model.edges.length; i++) {
/** @type {?} */
const edge = model.edges[i];
if (connectorIds.indexOf(edge.source) !== -1 || connectorIds.indexOf(edge.destination) !== -1) {
this.modelService.edges.delete(edge);
i--;
}
}
model.nodes.splice(index, 1);
this.modelService.notifyModelChanged();
this.modelService.nodeRemovedCallback(node);
}
/**
* @return {?}
*/
getSelectedNodes() {
/** @type {?} */
const model = this.modelService.model;
return model.nodes.filter((/**
* @param {?} node
* @return {?}
*/
(node) => {
return this.modelService.nodes.isSelected(node);
}));
}
/**
* @param {?} node
* @param {?=} ctrlKey
* @return {?}
*/
handleClicked(node, ctrlKey) {
if (ctrlKey) {
this.modelService.nodes.toggleSelected(node);
}
else {
this.modelService.deselectAll();
this.modelService.nodes.select(node);
}
}
/**
* @private
* @param {?} node
* @return {?}
*/
_addNode(node) {
/** @type {?} */
const model = this.modelService.model;
try {
model.nodes.push(node);
this.modelService.modelValidation.validateNodes(model.nodes);
}
catch (error) {
model.nodes.splice(model.nodes.indexOf(node), 1);
throw error;
}
}
/**
* @param {?} node
* @return {?}
*/
getConnectorIds(node) {
return node.connectors.map((/**
* @param {?} connector
* @return {?}
*/
(connector) => {
return connector.id;
}));
}
/**
* @param {?} connectorId
* @return {?}
*/
getNodeByConnectorId(connectorId) {
/** @type {?} */
const model = this.modelService.model;
for (const node of model.nodes) {
/** @type {?} */
const connectorIds = this.getConnectorIds(node);
if (connectorIds.indexOf(connectorId) > -1) {
return node;
}
}
return null;
}
/**
* @param {?} nodeId
* @return {?}
*/
getHtmlElement(nodeId) {
return this.modelService.nodesHtmlElements[nodeId];
}
/**
* @param {?} nodeId
* @param {?} element
* @return {?}
*/
setHtmlElement(nodeId, element) {
this.modelService.nodesHtmlElements[nodeId] = element;
this.modelService.detectChanges();
}
}
class EdgesModel extends AbstractFcModel {
/**
* @param {?} modelService
*/
constructor(modelService) {
super(modelService);
}
/**
* @param {?} edge
* @return {?}
*/
sourceCoord(edge) {
return this.modelService.connectors.getCenteredCoord(edge.source);
}
/**
* @param {?} edge
* @return {?}
*/
destCoord(edge) {
return this.modelService.connectors.getCenteredCoord(edge.destination);
}
/**
* @param {?} edge
* @return {?}
*/
delete(edge) {
/** @type {?} */
const model = this.modelService.model;
/** @type {?} */
const index = model.edges.indexOf(edge);
if (index === -1) {
throw new Error('Tried to delete not existing edge');
}
if (this.isSelected(edge)) {
this.deselect(edge);
}
model.edges.splice(index, 1);
this.modelService.notifyModelChanged();
this.modelService.edgeRemovedCallback(edge);
}
/**
* @return {?}
*/
getSelectedEdges() {
/** @type {?} */
const model = this.modelService.model;
return model.edges.filter((/**
* @param {?} edge
* @return {?}
*/
(edge) => {
return this.modelService.edges.isSelected(edge);
}));
}
/**
* @param {?} edge
* @param {?=} ctrlKey
* @return {?}
*/
handleEdgeMouseClick(edge, ctrlKey) {
if (ctrlKey) {
this.modelService.edges.toggleSelected(edge);
}
else {
this.modelService.deselectAll();
this.modelService.edges.select(edge);
}
}
/**
* @param {?} edge
* @return {?}
*/
putEdge(edge) {
/** @type {?} */
const model = this.modelService.model;
model.edges.push(edge);
this.modelService.notifyModelChanged();
}
/**
* @param {?} event
* @param {?} sourceConnector
* @param {?} destConnector
* @param {?} label
* @return {?}
*/
_addEdge(event, sourceConnector, destConnector, label) {
this.modelService.modelValidation.validateConnector(sourceConnector);
this.modelService.modelValidation.validateConnector(destConnector);
/** @type {?} */
const edge = {};
edge.source = sourceConnector.id;
edge.destination = destConnector.id;
edge.label = label;
/** @type {?} */
const model = this.modelService.model;
this.modelService.modelValidation.validateEdges(model.edges.concat([edge]), model.nodes);
this.modelService.createEdge(event, edge).subscribe((/**
* @param {?} created
* @return {?}
*/
(created) => {
model.edges.push(created);
this.modelService.notifyModelChanged();
this.modelService.edgeAddedCallback(created);
}));
}
}
//# 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{ FcModelValidationService } from './modelvalidation.service';\nimport {\n  FcConnector,\n  FcConnectorRectInfo,\n  FcCoords,\n  FcEdge,\n  FcItemInfo,\n  FcModel,\n  FcNode,\n  FcRectBox,\n  FlowchartConstants\n} from './ngx-flowchart.models';\nimport { Observable, of, Subject } from 'rxjs';\nimport { ChangeDetectorRef, EventEmitter } from '@angular/core';\nimport { debounceTime } from 'rxjs/operators';\n\nexport class FcModelService {\n\n  modelValidation: FcModelValidationService;\n  model: FcModel;\n  private readonly detectChangesSubject: Subject<any>;\n  selectedObjects: any[];\n\n  connectorsRectInfos: ConnectorRectInfoMap = {};\n  nodesHtmlElements: HtmlElementMap = {};\n  canvasHtmlElement: HTMLElement = null;\n  dragImage: HTMLImageElement = null;\n  svgHtmlElement: SVGElement = null;\n\n  dropNode: (event: Event, node: FcNode) => void;\n  createEdge: (event: Event, edge: FcEdge) => Observable<FcEdge>;\n  edgeAddedCallback: (edge: FcEdge) => void;\n  nodeRemovedCallback: (node: FcNode) => void;\n  edgeRemovedCallback: (edge: FcEdge) => void;\n\n  dropTargetId: string;\n\n  private readonly modelChanged: EventEmitter<any>;\n  private readonly debouncer = new Subject<any>();\n\n  connectors: ConnectorsModel;\n  nodes: NodesModel;\n  edges: EdgesModel;\n\n  constructor(modelValidation: FcModelValidationService,\n              model: FcModel,\n              modelChanged: EventEmitter<any>,\n              detectChangesSubject: Subject<any>,\n              selectedObjects: any[],\n              dropNode: (event: Event, node: FcNode) => void,\n              createEdge: (event: Event, edge: FcEdge) => Observable<FcEdge>,\n              edgeAddedCallback: (edge: FcEdge) => void,\n              nodeRemovedCallback: (node: FcNode) => void,\n              edgeRemovedCallback: (edge: FcEdge) => void,\n              canvasHtmlElement: HTMLElement,\n              svgHtmlElement: SVGElement) {\n\n    this.modelValidation = modelValidation;\n    this.model = model;\n    this.modelChanged = modelChanged;\n    this.detectChangesSubject = detectChangesSubject;\n    this.canvasHtmlElement = canvasHtmlElement;\n    this.svgHtmlElement = svgHtmlElement;\n    this.modelValidation.validateModel(this.model);\n    this.selectedObjects = selectedObjects;\n\n    this.dropNode = dropNode || (() => {});\n    this.createEdge = createEdge || ((event, edge) => of({...edge, label: 'label'}));\n    this.edgeAddedCallback = edgeAddedCallback || (() => {});\n    this.nodeRemovedCallback = nodeRemovedCallback || (() => {});\n    this.edgeRemovedCallback = edgeRemovedCallback || (() => {});\n\n    this.connectors = new ConnectorsModel(this);\n    this.nodes = new NodesModel(this);\n    this.edges = new EdgesModel(this);\n\n    this.debouncer\n      .pipe(debounceTime(100))\n      .subscribe(() => this.modelChanged.emit());\n  }\n\n  public notifyModelChanged() {\n    this.debouncer.next();\n  }\n\n  public detectChanges() {\n    setTimeout(() => {\n      this.detectChangesSubject.next();\n    }, 0);\n  }\n\n  public selectObject(object: any) {\n    if (this.isEditable()) {\n      if (this.selectedObjects.indexOf(object) === -1) {\n        this.selectedObjects.push(object);\n      }\n    }\n  }\n\n  public deselectObject(object: any) {\n    if (this.isEditable()) {\n      const index = this.selectedObjects.indexOf(object);\n      if (index === -1) {\n        throw new Error('Tried to deselect an unselected object');\n      }\n      this.selectedObjects.splice(index, 1);\n    }\n  }\n\n  public toggleSelectedObject(object: any) {\n    if (this.isSelectedObject(object)) {\n      this.deselectObject(object);\n    } else {\n      this.selectObject(object);\n    }\n  }\n\n  public isSelectedObject(object: any): boolean {\n    return this.selectedObjects.indexOf(object) !== -1;\n  }\n\n  public selectAll() {\n    this.model.nodes.forEach(node => {\n      if (!node.readonly) {\n        this.nodes.select(node);\n      }\n    });\n    this.model.edges.forEach(edge => {\n      this.edges.select(edge);\n    });\n    this.detectChanges();\n  }\n\n  public deselectAll() {\n    this.selectedObjects.splice(0, this.selectedObjects.length);\n    this.detectChanges();\n  }\n\n  public isEditObject(object: any): boolean {\n    return this.selectedObjects.length === 1 &&\n      this.selectedObjects.indexOf(object) !== -1;\n  }\n\n  private inRectBox(x: number, y: number, rectBox: FcRectBox): boolean {\n    return x >= rectBox.left && x <= rectBox.right &&\n      y >= rectBox.top && y <= rectBox.bottom;\n  }\n\n  public getItemInfoAtPoint(x: number, y: number): FcItemInfo {\n    return {\n      node: this.getNodeAtPoint(x, y),\n      edge: this.getEdgeAtPoint(x, y)\n    };\n  }\n\n  public getNodeAtPoint(x: number, y: number): FcNode {\n    for (const node of this.model.nodes) {\n      const element = this.nodes.getHtmlElement(node.id);\n      const nodeElementBox = element.getBoundingClientRect();\n      if (x >= nodeElementBox.left && x <= nodeElementBox.right\n        && y >= nodeElementBox.top && y <= nodeElementBox.bottom) {\n        return node;\n      }\n    }\n    return null;\n  }\n\n  public getEdgeAtPoint(x: number, y: number): FcEdge {\n    const element = document.elementFromPoint(x, y);\n    const id = element.id;\n    let edgeIndex = -1;\n    if (id) {\n      if (id.startsWith('fc-edge-path-')) {\n        edgeIndex = Number(id.substring('fc-edge-path-'.length));\n      } else if (id.startsWith('fc-edge-label-')) {\n        edgeIndex = Number(id.substring('fc-edge-label-'.length));\n      }\n    }\n    if (edgeIndex > -1) {\n      return this.model.edges[edgeIndex];\n    }\n    return null;\n  }\n\n  public selectAllInRect(rectBox: FcRectBox) {\n    this.model.nodes.forEach((value) => {\n      const element = this.nodes.getHtmlElement(value.id);\n      const nodeElementBox = element.getBoundingClientRect();\n      if (!value.readonly) {\n        const x = nodeElementBox.left + nodeElementBox.width / 2;\n        const y = nodeElementBox.top + nodeElementBox.height / 2;\n        if (this.inRectBox(x, y, rectBox)) {\n          this.nodes.select(value);\n        } else {\n          if (this.nodes.isSelected(value)) {\n            this.nodes.deselect(value);\n          }\n        }\n      }\n    });\n    const canvasElementBox = this.canvasHtmlElement.getBoundingClientRect();\n    this.model.edges.forEach((value) => {\n      const start = this.edges.sourceCoord(value);\n      const end = this.edges.destCoord(value);\n      const x = (start.x + end.x) / 2 + canvasElementBox.left;\n      const y = (start.y + end.y) / 2 + canvasElementBox.top;\n      if (this.inRectBox(x, y, rectBox)) {\n        this.edges.select(value);\n      } else {\n        if (this.edges.isSelected(value)) {\n          this.edges.deselect(value);\n        }\n      }\n    });\n  }\n\n  public deleteSelected() {\n    const edgesToDelete = this.edges.getSelectedEdges();\n    edgesToDelete.forEach((edge) => {\n      this.edges.delete(edge);\n    });\n    const nodesToDelete = this.nodes.getSelectedNodes();\n    nodesToDelete.forEach((node) => {\n      this.nodes.delete(node);\n    });\n  }\n\n  public isEditable(): boolean {\n    return this.dropTargetId === undefined;\n  }\n\n  public isDropSource(): boolean {\n    return this.dropTargetId !== undefined;\n  }\n\n  public getDragImage(): HTMLImageElement {\n    if (!this.dragImage) {\n      this.dragImage = new Image();\n      this.dragImage.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7';\n      this.dragImage.style.visibility = 'hidden';\n    }\n    return this.dragImage;\n  }\n}\n\ninterface HtmlElementMap { [id: string]: HTMLElement; }\n\ninterface ConnectorRectInfoMap { [id: string]: FcConnectorRectInfo; }\n\nabstract class AbstractFcModel<T> {\n\n  modelService: FcModelService;\n\n  protected constructor(modelService: FcModelService) {\n    this.modelService = modelService;\n  }\n\n  public select(object: T) {\n    this.modelService.selectObject(object);\n  }\n\n  public deselect(object: T) {\n    this.modelService.deselectObject(object);\n  }\n\n  public toggleSelected(object: T) {\n    this.modelService.toggleSelectedObject(object);\n  }\n\n  public isSelected(object: T): boolean {\n    return this.modelService.isSelectedObject(object);\n  }\n\n  public isEdit(object: T): boolean {\n    return this.modelService.isEditObject(object);\n  }\n}\n\nclass ConnectorsModel extends AbstractFcModel<FcConnector> {\n\n  constructor(modelService: FcModelService) {\n    super(modelService);\n  }\n\n  public getConnector(connectorId: string): FcConnector {\n    const model = this.modelService.model;\n    for (const node of model.nodes) {\n      for (const connector of node.connectors) {\n        if (connector.id === connectorId) {\n          return connector;\n        }\n      }\n    }\n  }\n\n  public getConnectorRectInfo(connectorId: string): FcConnectorRectInfo {\n    return this.modelService.connectorsRectInfos[connectorId];\n  }\n\n  public setConnectorRectInfo(connectorId: string, connectorRectInfo: FcConnectorRectInfo) {\n    this.modelService.connectorsRectInfos[connectorId] = connectorRectInfo;\n    this.modelService.detectChanges();\n  }\n\n  private _getCoords(connectorId: string, centered?: boolean): FcCoords {\n    const connectorRectInfo = this.getConnectorRectInfo(connectorId);\n    const canvas = this.modelService.canvasHtmlElement;\n    if (connectorRectInfo === null || connectorRectInfo === undefined || canvas === null) {\n      return {x: 0, y: 0};\n    }\n    let x = connectorRectInfo.type === FlowchartConstants.leftConnectorType ?\n      connectorRectInfo.nodeRectInfo.left() : connectorRectInfo.nodeRectInfo.right();\n    let y = connectorRectInfo.nodeRectInfo.top() + connectorRectInfo.nodeRectInfo.height() / 2;\n    if (!centered) {\n      x -= connectorRectInfo.width / 2;\n      y -= connectorRectInfo.height / 2;\n    }\n    const coords: FcCoords = {\n      x: Math.round(x),\n      y: Math.round(y)\n    };\n    return coords;\n  }\n\n  public getCoords(connectorId: string): FcCoords {\n    return this._getCoords(connectorId, false);\n  }\n\n  public getCenteredCoord(connectorId: string): FcCoords {\n    return this._getCoords(connectorId, true);\n  }\n}\n\nclass NodesModel extends AbstractFcModel<FcNode> {\n\n  constructor(modelService: FcModelService) {\n    super(modelService);\n  }\n\n  public getConnectorsByType(node: FcNode, type: string): Array<FcConnector> {\n    return node.connectors.filter((connector) => {\n      return connector.type === type;\n    });\n  }\n\n  private _addConnector(node: FcNode, connector: FcConnector) {\n    node.connectors.push(connector);\n    try {\n      this.modelService.modelValidation.validateNode(node);\n    } catch (error) {\n      node.connectors.splice(node.connectors.indexOf(connector), 1);\n      throw error;\n    }\n  }\n\n  public delete(node: FcNode) {\n    if (this.isSelected(node)) {\n      this.deselect(node);\n    }\n    const model = this.modelService.model;\n    const index = model.nodes.indexOf(node);\n    if (index === -1) {\n      if (node === undefined) {\n        throw new Error('Passed undefined');\n      }\n      throw new Error('Tried to delete not existing node');\n    }\n    const connectorIds = this.getConnectorIds(node);\n    for (let i = 0; i < model.edges.length; i++) {\n      const edge = model.edges[i];\n      if (connectorIds.indexOf(edge.source) !== -1 || connectorIds.indexOf(edge.destination) !== -1) {\n        this.modelService.edges.delete(edge);\n        i--;\n      }\n    }\n    model.nodes.splice(index, 1);\n    this.modelService.notifyModelChanged();\n    this.modelService.nodeRemovedCallback(node);\n  }\n\n  public getSelectedNodes(): Array<FcNode> {\n    const model = this.modelService.model;\n    return model.nodes.filter((node) => {\n      return this.modelService.nodes.isSelected(node);\n    });\n  }\n\n  public handleClicked(node: FcNode, ctrlKey?: boolean) {\n    if (ctrlKey) {\n      this.modelService.nodes.toggleSelected(node);\n    } else {\n      this.modelService.deselectAll();\n      this.modelService.nodes.select(node);\n    }\n  }\n\n  private _addNode(node: FcNode) {\n    const model = this.modelService.model;\n    try {\n      model.nodes.push(node);\n      this.modelService.modelValidation.validateNodes(model.nodes);\n    } catch (error) {\n      model.nodes.splice(model.nodes.indexOf(node), 1);\n      throw error;\n    }\n  }\n\n  public getConnectorIds(node: FcNode): Array<string> {\n    return node.connectors.map((connector) => {\n      return connector.id;\n    });\n  }\n\n  public getNodeByConnectorId(connectorId: string): FcNode {\n    const model = this.modelService.model;\n    for (const node of model.nodes) {\n      const connectorIds = this.getConnectorIds(node);\n      if (connectorIds.indexOf(connectorId) > -1) {\n        return node;\n      }\n    }\n    return null;\n  }\n\n  public getHtmlElement(nodeId: string): HTMLElement {\n    return this.modelService.nodesHtmlElements[nodeId];\n  }\n\n  public setHtmlElement(nodeId: string, element: HTMLElement) {\n    this.modelService.nodesHtmlElements[nodeId] = element;\n    this.modelService.detectChanges();\n  }\n\n}\n\nclass EdgesModel extends AbstractFcModel<FcEdge> {\n\n  constructor(modelService: FcModelService) {\n    super(modelService);\n  }\n\n  public sourceCoord(edge: FcEdge): FcCoords {\n    return this.modelService.connectors.getCenteredCoord(edge.source);\n  }\n\n  public destCoord(edge: FcEdge): FcCoords {\n    return this.modelService.connectors.getCenteredCoord(edge.destination);\n  }\n\n  public delete(edge: FcEdge) {\n    const model = this.modelService.model;\n    const index = model.edges.indexOf(edge);\n    if (index === -1) {\n      throw new Error('Tried to delete not existing edge');\n    }\n    if (this.isSelected(edge)) {\n      this.deselect(edge);\n    }\n    model.edges.splice(index, 1);\n    this.modelService.notifyModelChanged();\n    this.modelService.edgeRemovedCallback(edge);\n  }\n\n  public getSelectedEdges(): Array<FcEdge> {\n    const model = this.modelService.model;\n    return model.edges.filter((edge) => {\n      return this.modelService.edges.isSelected(edge);\n    });\n  }\n\n  public handleEdgeMouseClick(edge: FcEdge, ctrlKey?: boolean) {\n    if (ctrlKey) {\n      this.modelService.edges.toggleSelected(edge);\n    } else {\n      this.modelService.deselectAll();\n      this.modelService.edges.select(edge);\n    }\n  }\n\n  public putEdge(edge: FcEdge) {\n    const model = this.modelService.model;\n    model.edges.push(edge);\n    this.modelService.notifyModelChanged();\n  }\n\n  public _addEdge(event: Event, sourceConnector: FcConnector, destConnector: FcConnector, label: string) {\n    this.modelService.modelValidation.validateConnector(sourceConnector);\n    this.modelService.modelValidation.validateConnector(destConnector);\n    const edge: FcEdge = {};\n    edge.source = sourceConnector.id;\n    edge.destination = destConnector.id;\n    edge.label = label;\n    const model = this.modelService.model;\n    this.modelService.modelValidation.validateEdges(model.edges.concat([edge]), model.nodes);\n    this.modelService.createEdge(event, edge).subscribe(\n      (created) => {\n        model.edges.push(created);\n        this.modelService.notifyModelChanged();\n        this.modelService.edgeAddedCallback(created);\n      }\n    );\n  }\n}\n"]}