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520 lines
16 KiB
520 lines
16 KiB
var util = require('../../../util');
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import Label from './shared/Label'
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import Box from './nodes/shapes/Box'
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import Circle from './nodes/shapes/Circle'
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import CircularImage from './nodes/shapes/CircularImage'
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import Database from './nodes/shapes/Database'
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import Diamond from './nodes/shapes/Diamond'
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import Dot from './nodes/shapes/Dot'
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import Ellipse from './nodes/shapes/Ellipse'
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import Icon from './nodes/shapes/Icon'
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import Image from './nodes/shapes/Image'
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import Square from './nodes/shapes/Square'
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import Star from './nodes/shapes/Star'
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import Text from './nodes/shapes/Text'
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import Triangle from './nodes/shapes/Triangle'
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import TriangleDown from './nodes/shapes/TriangleDown'
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import Validator from "../../../shared/Validator";
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import {printStyle} from "../../../shared/Validator";
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/**
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* @class Node
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* A node. A node can be connected to other nodes via one or multiple edges.
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* @param {object} options An object containing options for the node. All
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* options are optional, except for the id.
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* {number} id Id of the node. Required
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* {string} label Text label for the node
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* {number} x Horizontal position of the node
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* {number} y Vertical position of the node
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* {string} shape Node shape, available:
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* "database", "circle", "ellipse",
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* "box", "image", "text", "dot",
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* "star", "triangle", "triangleDown",
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* "square", "icon"
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* {string} image An image url
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* {string} title An title text, can be HTML
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* {anytype} group A group name or number
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* @param {Network.Images} imagelist A list with images. Only needed
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* when the node has an image
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* @param {Network.Groups} grouplist A list with groups. Needed for
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* retrieving group options
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* @param {Object} constants An object with default values for
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* example for the color
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*
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*/
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class Node {
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constructor(options, body, imagelist, grouplist, globalOptions) {
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this.options = util.bridgeObject(globalOptions);
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this.globalOptions = globalOptions;
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this.body = body;
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this.edges = []; // all edges connected to this node
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// set defaults for the options
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this.id = undefined;
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this.imagelist = imagelist;
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this.grouplist = grouplist;
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// state options
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this._x = undefined;
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this._y = undefined;
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this.baseSize = this.options.size;
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this.baseFontSize = this.options.font.size;
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this.predefinedPosition = false; // used to check if initial fit should just take the range or approximate
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this.selected = false;
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this.hover = false;
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this.labelModule = new Label(this.body, this.options);
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// prevents sending connected messages on initial creation as it should be handled by added element
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this.sendPhysicsUpdates = false;
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this.setOptions(options);
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this.sendPhysicsUpdates = true;
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}
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get x() {
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return this._x;
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}
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set x(newX) {
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this._x = newX;
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this.body.emitter.emit('_positionUpdate', {id: this.id, x: this._x, y: this._y});
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}
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/**
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* Non emitting version for use by physics engine so we don't create infinite loops.
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* @param newX
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*/
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setX(newX) {
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this._x = newX;
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}
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get y() {
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return this._y;
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}
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set y(newY) {
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this._y = newY;
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this.body.emitter.emit('_positionUpdate', {id: this.id, x: this._x, y: this._y});
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}
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/**
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* Emitting version
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*
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* @param newFixed
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*/
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setFixed(newFixed) {
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// TODO split out fixed portion?
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let physOpts = Node.parseOptions(this.options, {fixed: newFixed});
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if (Object.keys(physOpts).length > 0) {
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this.body.emitter.emit('_physicsUpdate', {type: 'node', id: this.id, options: physOpts});
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}
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}
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/**
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* Non emitting version for use by physics engine so we don't create infinite loops.
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* @param newY
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*/
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setY(newY) {
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this._y = newY;
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}
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/**
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* Attach a edge to the node
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* @param {Edge} edge
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*/
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attachEdge(edge) {
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if (this.edges.indexOf(edge) === -1) {
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this.edges.push(edge);
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}
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}
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/**
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* Detach a edge from the node
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* @param {Edge} edge
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*/
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detachEdge(edge) {
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var index = this.edges.indexOf(edge);
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if (index != -1) {
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this.edges.splice(index, 1);
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}
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}
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/**
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* Set or overwrite options for the node
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* @param {Object} options an object with options
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* @param {Object} constants and object with default, global options
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*/
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setOptions(options) {
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let currentShape = this.options.shape;
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if (!options) {
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return;
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}
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// basic options
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if (options.id !== undefined) {this.id = options.id;}
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if (this.id === undefined) {
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throw "Node must have an id";
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}
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// set these options locally
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// clear x and y positions
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if (options.x !== undefined) {
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if (options.x === null) {this.x = undefined; this.predefinedPosition = false;}
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else {this.x = parseInt(options.x); this.predefinedPosition = true;}
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}
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if (options.y !== undefined) {
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if (options.y === null) {this.y = undefined; this.predefinedPosition = false;}
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else {this.y = parseInt(options.y); this.predefinedPosition = true;}
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}
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if (options.size !== undefined) {this.baseSize = options.size;}
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if (options.value !== undefined) {options.value = parseFloat(options.value);}
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// copy group options
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if (typeof options.group === 'number' || (typeof options.group === 'string' && options.group != '')) {
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var groupObj = this.grouplist.get(options.group);
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util.deepExtend(this.options, groupObj);
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// the color object needs to be completely defined. Since groups can partially overwrite the colors, we parse it again, just in case.
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this.options.color = util.parseColor(this.options.color);
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}
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// this transforms all shorthands into fully defined options
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let physOpts = Node.parseOptions(this.options, options, true, this.globalOptions);
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// load the images
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if (this.options.image !== undefined) {
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if (this.imagelist) {
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this.imageObj = this.imagelist.load(this.options.image, this.options.brokenImage, this.id);
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}
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else {
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throw "No imagelist provided";
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}
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}
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this.updateLabelModule();
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this.updateShape(currentShape);
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if (options.mass !== undefined) {
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this.options.mass = options.mass;
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physOpts.mass = options.mass;
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}
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if (options.physics !== undefined) {
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this.options.physics = options.physics;
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physOpts.physics = options.physics;
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}
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if (this.sendPhysicsUpdates && Object.keys(physOpts).length > 0) {
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this.body.emitter.emit('_physicsUpdate', {type: 'node', id: this.id, options: physOpts});
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}
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// TODO make embedded physics trigger this or handle _physicsUpdate messages
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if (options.hidden !== undefined) {
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return true;
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}
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return false;
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}
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/**
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* This process all possible shorthands in the new options and makes sure that the parentOptions are fully defined.
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* Static so it can also be used by the handler.
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* @param parentOptions
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* @param newOptions
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*/
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static parseOptions(parentOptions, newOptions, allowDeletion = false, globalOptions = {}) {
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var fields = [
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'color',
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'font',
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'fixed',
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'shadow'
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];
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var changedPhysicsOptions = {};
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util.selectiveNotDeepExtend(fields, parentOptions, newOptions, allowDeletion);
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// merge the shadow options into the parent.
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util.mergeOptions(parentOptions, newOptions, 'shadow', allowDeletion, globalOptions);
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// individual shape newOptions
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if (newOptions.color !== undefined && newOptions.color !== null) {
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let parsedColor = util.parseColor(newOptions.color);
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util.fillIfDefined(parentOptions.color, parsedColor);
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}
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else if (allowDeletion === true && newOptions.color === null) {
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parentOptions.color = Object.create(globalOptions.color); // this sets the pointer of the option back to the global option.
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}
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// handle the fixed options
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if (newOptions.fixed !== undefined && newOptions.fixed !== null) {
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if (typeof newOptions.fixed === 'boolean') {
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if (parentOptions.fixed.x !== newOptions.fixed || parentOptions.fixed.y !== newOptions.fixed) {
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parentOptions.fixed.x = newOptions.fixed;
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parentOptions.fixed.y = newOptions.fixed;
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changedPhysicsOptions.fixed = {x: newOptions.fixed, y: newOptions.fixed};
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}
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}
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else {
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if (newOptions.fixed.x !== undefined &&
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typeof newOptions.fixed.x === 'boolean' &&
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parentOptions.fixed.x !== newOptions.fixed.x)
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{
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parentOptions.fixed.x = newOptions.fixed.x;
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util.deepExtend(changedPhysicsOptions, {fixed: {x: newOptions.fixed.x}});
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}
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if (newOptions.fixed.y !== undefined &&
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typeof newOptions.fixed.y === 'boolean' &&
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parentOptions.fixed.y !== newOptions.fixed.y)
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{
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parentOptions.fixed.y = newOptions.fixed.y;
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util.deepExtend(changedPhysicsOptions, {fixed: {y: newOptions.fixed.y}});
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}
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}
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}
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// handle the font options
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if (newOptions.font !== undefined && newOptions.font !== null) {
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Label.parseOptions(parentOptions.font, newOptions);
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}
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else if (allowDeletion === true && newOptions.font === null) {
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parentOptions.font = Object.create(globalOptions.font); // this sets the pointer of the option back to the global option.
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}
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// handle the scaling options, specifically the label part
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if (newOptions.scaling !== undefined) {
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util.mergeOptions(parentOptions.scaling, newOptions.scaling, 'label', allowDeletion, globalOptions.scaling);
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}
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return changedPhysicsOptions;
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}
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updateLabelModule() {
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if (this.options.label === undefined || this.options.label === null) {
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this.options.label = '';
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}
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this.labelModule.setOptions(this.options, true);
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if (this.labelModule.baseSize !== undefined) {
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this.baseFontSize = this.labelModule.baseSize;
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}
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}
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updateShape(currentShape) {
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if (currentShape === this.options.shape && this.shape) {
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this.shape.setOptions(this.options, this.imageObj);
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}
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else {
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// choose draw method depending on the shape
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switch (this.options.shape) {
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case 'box':
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this.shape = new Box(this.options, this.body, this.labelModule);
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break;
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case 'circle':
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this.shape = new Circle(this.options, this.body, this.labelModule);
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break;
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case 'circularImage':
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this.shape = new CircularImage(this.options, this.body, this.labelModule, this.imageObj);
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break;
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case 'database':
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this.shape = new Database(this.options, this.body, this.labelModule);
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break;
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case 'diamond':
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this.shape = new Diamond(this.options, this.body, this.labelModule);
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break;
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case 'dot':
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this.shape = new Dot(this.options, this.body, this.labelModule);
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break;
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case 'ellipse':
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this.shape = new Ellipse(this.options, this.body, this.labelModule);
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break;
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case 'icon':
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this.shape = new Icon(this.options, this.body, this.labelModule);
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break;
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case 'image':
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this.shape = new Image(this.options, this.body, this.labelModule, this.imageObj);
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break;
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case 'square':
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this.shape = new Square(this.options, this.body, this.labelModule);
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break;
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case 'star':
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this.shape = new Star(this.options, this.body, this.labelModule);
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break;
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case 'text':
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this.shape = new Text(this.options, this.body, this.labelModule);
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break;
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case 'triangle':
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this.shape = new Triangle(this.options, this.body, this.labelModule);
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break;
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case 'triangleDown':
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this.shape = new TriangleDown(this.options, this.body, this.labelModule);
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break;
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default:
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this.shape = new Ellipse(this.options, this.body, this.labelModule);
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break;
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}
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}
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this._reset();
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}
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/**
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* select this node
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*/
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select() {
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this.selected = true;
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this._reset();
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}
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/**
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* unselect this node
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*/
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unselect() {
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this.selected = false;
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this._reset();
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}
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/**
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* Reset the calculated size of the node, forces it to recalculate its size
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* @private
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*/
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_reset() {
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this.shape.width = undefined;
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this.shape.height = undefined;
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}
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/**
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* get the title of this node.
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* @return {string} title The title of the node, or undefined when no title
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* has been set.
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*/
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getTitle() {
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return this.options.title;
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}
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/**
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* Calculate the distance to the border of the Node
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* @param {CanvasRenderingContext2D} ctx
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* @param {Number} angle Angle in radians
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* @returns {number} distance Distance to the border in pixels
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*/
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distanceToBorder(ctx, angle) {
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return this.shape.distanceToBorder(ctx,angle);
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}
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/**
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* Check if this node has a fixed x and y position
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* @return {boolean} true if fixed, false if not
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*/
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isFixed() {
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return (this.options.fixed.x && this.options.fixed.y);
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}
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/**
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* check if this node is selecte
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* @return {boolean} selected True if node is selected, else false
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*/
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isSelected() {
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return this.selected;
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}
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/**
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* Retrieve the value of the node. Can be undefined
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* @return {Number} value
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*/
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getValue() {
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return this.options.value;
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}
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/**
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* Adjust the value range of the node. The node will adjust it's size
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* based on its value.
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* @param {Number} min
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* @param {Number} max
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*/
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setValueRange(min, max, total) {
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if (this.options.value !== undefined) {
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var scale = this.options.scaling.customScalingFunction(min, max, total, this.options.value);
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var sizeDiff = this.options.scaling.max - this.options.scaling.min;
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if (this.options.scaling.label.enabled === true) {
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var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
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this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
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}
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this.options.size = this.options.scaling.min + scale * sizeDiff;
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}
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else {
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this.options.size = this.baseSize;
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this.options.font.size = this.baseFontSize;
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}
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this.updateLabelModule();
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}
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/**
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* Draw this node in the given canvas
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* The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
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* @param {CanvasRenderingContext2D} ctx
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*/
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draw(ctx) {
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this.shape.draw(ctx, this.x, this.y, this.selected, this.hover);
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}
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/**
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* Update the bounding box of the shape
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*/
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updateBoundingBox(ctx) {
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this.shape.updateBoundingBox(this.x,this.y,ctx);
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}
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/**
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* Recalculate the size of this node in the given canvas
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* The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
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* @param {CanvasRenderingContext2D} ctx
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*/
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resize(ctx) {
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this.shape.resize(ctx, this.selected);
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}
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/**
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* Check if this object is overlapping with the provided object
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* @param {Object} obj an object with parameters left, top, right, bottom
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* @return {boolean} True if location is located on node
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*/
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isOverlappingWith(obj) {
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return (
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this.shape.left < obj.right &&
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this.shape.left + this.shape.width > obj.left &&
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this.shape.top < obj.bottom &&
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this.shape.top + this.shape.height > obj.top
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);
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}
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/**
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* Check if this object is overlapping with the provided object
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* @param {Object} obj an object with parameters left, top, right, bottom
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* @return {boolean} True if location is located on node
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*/
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isBoundingBoxOverlappingWith(obj) {
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return (
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this.shape.boundingBox.left < obj.right &&
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this.shape.boundingBox.right > obj.left &&
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this.shape.boundingBox.top < obj.bottom &&
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this.shape.boundingBox.bottom > obj.top
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);
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}
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}
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export default Node;
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