var util = require('../../../util'); var Label = require('./shared/Label').default; var ComponentUtil = require('./shared/ComponentUtil').default; var Box = require('./nodes/shapes/Box').default; var Circle = require('./nodes/shapes/Circle').default; var CircularImage = require('./nodes/shapes/CircularImage').default; var Database = require('./nodes/shapes/Database').default; var Diamond = require('./nodes/shapes/Diamond').default; var Dot = require('./nodes/shapes/Dot').default; var Ellipse = require('./nodes/shapes/Ellipse').default; var Icon = require('./nodes/shapes/Icon').default; var Image = require('./nodes/shapes/Image').default; var Square = require('./nodes/shapes/Square').default; var Hexagon = require('./nodes/shapes/Hexagon').default; var Star = require('./nodes/shapes/Star').default; var Text = require('./nodes/shapes/Text').default; var Triangle = require('./nodes/shapes/Triangle').default; var TriangleDown = require('./nodes/shapes/TriangleDown').default; var { printStyle } = require("../../../shared/Validator"); /** * A node. A node can be connected to other nodes via one or multiple edges. */ class Node { /** * * @param {object} options An object containing options for the node. All * options are optional, except for the id. * {number} id Id of the node. Required * {string} label Text label for the node * {number} x Horizontal position of the node * {number} y Vertical position of the node * {string} shape Node shape * {string} image An image url * {string} title A title text, can be HTML * {anytype} group A group name or number * * @param {Object} body Shared state of current network instance * @param {Network.Images} imagelist A list with images. Only needed when the node has an image * @param {Groups} grouplist A list with groups. Needed for retrieving group options * @param {Object} globalOptions Current global node options; these serve as defaults for the node instance * @param {Object} defaultOptions Global default options for nodes; note that this is also the prototype * for parameter `globalOptions`. */ constructor(options, body, imagelist, grouplist, globalOptions, defaultOptions) { this.options = util.bridgeObject(globalOptions); this.globalOptions = globalOptions; this.defaultOptions = defaultOptions; this.body = body; this.edges = []; // all edges connected to this node // set defaults for the options this.id = undefined; this.imagelist = imagelist; this.grouplist = grouplist; // state options this.x = undefined; this.y = undefined; this.baseSize = this.options.size; this.baseFontSize = this.options.font.size; this.predefinedPosition = false; // used to check if initial fit should just take the range or approximate this.selected = false; this.hover = false; this.labelModule = new Label(this.body, this.options, false /* Not edge label */); this.setOptions(options); } /** * Attach a edge to the node * @param {Edge} edge */ attachEdge(edge) { if (this.edges.indexOf(edge) === -1) { this.edges.push(edge); } } /** * Detach a edge from the node * * @param {Edge} edge */ detachEdge(edge) { var index = this.edges.indexOf(edge); if (index != -1) { this.edges.splice(index, 1); } } /** * Set or overwrite options for the node * * @param {Object} options an object with options * @returns {null|boolean} */ setOptions(options) { let currentShape = this.options.shape; if (!options) { return; // Note that the return value will be 'undefined'! This is OK. } // basic options if (options.id !== undefined) {this.id = options.id;} if (this.id === undefined) { throw new Error("Node must have an id"); } Node.checkMass(options, this.id); // set these options locally // clear x and y positions if (options.x !== undefined) { if (options.x === null) {this.x = undefined; this.predefinedPosition = false;} else {this.x = parseInt(options.x); this.predefinedPosition = true;} } if (options.y !== undefined) { if (options.y === null) {this.y = undefined; this.predefinedPosition = false;} else {this.y = parseInt(options.y); this.predefinedPosition = true;} } if (options.size !== undefined) {this.baseSize = options.size;} if (options.value !== undefined) {options.value = parseFloat(options.value);} // this transforms all shorthands into fully defined options Node.parseOptions(this.options, options, true, this.globalOptions, this.grouplist); let pile = [options, this.options, this.defaultOptions]; this.chooser = ComponentUtil.choosify('node', pile); this._load_images(); this.updateLabelModule(options); this.updateShape(currentShape); return (options.hidden !== undefined || options.physics !== undefined); } /** * Load the images from the options, for the nodes that need them. * * Images are always loaded, even if they are not used in the current shape. * The user may switch to an image shape later on. * * @private */ _load_images() { if (this.options.shape === 'circularImage' || this.options.shape === 'image') { if (this.options.image === undefined) { throw new Error("Option image must be defined for node type '" + this.options.shape + "'"); } } if (this.options.image === undefined) { return; } if (this.imagelist === undefined) { throw new Error("Internal Error: No images provided"); } if (typeof this.options.image === 'string') { this.imageObj = this.imagelist.load(this.options.image, this.options.brokenImage, this.id); } else { if (this.options.image.unselected === undefined) { throw new Error("No unselected image provided"); } this.imageObj = this.imagelist.load(this.options.image.unselected, this.options.brokenImage, this.id); if (this.options.image.selected !== undefined) { this.imageObjAlt = this.imagelist.load(this.options.image.selected, this.options.brokenImage, this.id); } else { this.imageObjAlt = undefined; } } } /** * Copy group option values into the node options. * * The group options override the global node options, so the copy of group options * must happen *after* the global node options have been set. * * This method must also be called also if the global node options have changed and the group options did not. * * @param {Object} parentOptions * @param {Object} newOptions new values for the options, currently only passed in for check * @param {Object} groupList */ static updateGroupOptions(parentOptions, newOptions, groupList) { if (groupList === undefined) return; // No groups, nothing to do var group = parentOptions.group; // paranoia: the selected group is already merged into node options, check. if (newOptions !== undefined && newOptions.group !== undefined && group !== newOptions.group) { throw new Error("updateGroupOptions: group values in options don't match."); } var hasGroup = (typeof group === 'number' || (typeof group === 'string' && group != '')); if (!hasGroup) return; // current node has no group, no need to merge var groupObj = groupList.get(group); // Skip merging of group font options into parent; these are required to be distinct for labels // TODO: It might not be a good idea either to merge the rest of the options, investigate this. util.selectiveNotDeepExtend(['font'], parentOptions, groupObj); // the color object needs to be completely defined. // Since groups can partially overwrite the colors, we parse it again, just in case. parentOptions.color = util.parseColor(parentOptions.color); } /** * This process all possible shorthands in the new options and makes sure that the parentOptions are fully defined. * Static so it can also be used by the handler. * * @param {Object} parentOptions * @param {Object} newOptions * @param {boolean} [allowDeletion=false] * @param {Object} [globalOptions={}] * @param {Object} [groupList] * @static */ static parseOptions(parentOptions, newOptions, allowDeletion = false, globalOptions = {}, groupList) { var fields = [ 'color', 'fixed', 'shadow' ]; util.selectiveNotDeepExtend(fields, parentOptions, newOptions, allowDeletion); Node.checkMass(newOptions); // merge the shadow options into the parent. util.mergeOptions(parentOptions, newOptions, 'shadow', globalOptions); // individual shape newOptions if (newOptions.color !== undefined && newOptions.color !== null) { let parsedColor = util.parseColor(newOptions.color); util.fillIfDefined(parentOptions.color, parsedColor); } else if (allowDeletion === true && newOptions.color === null) { parentOptions.color = util.bridgeObject(globalOptions.color); // set the object back to the global options } // handle the fixed options if (newOptions.fixed !== undefined && newOptions.fixed !== null) { if (typeof newOptions.fixed === 'boolean') { parentOptions.fixed.x = newOptions.fixed; parentOptions.fixed.y = newOptions.fixed; } else { if (newOptions.fixed.x !== undefined && typeof newOptions.fixed.x === 'boolean') { parentOptions.fixed.x = newOptions.fixed.x; } if (newOptions.fixed.y !== undefined && typeof newOptions.fixed.y === 'boolean') { parentOptions.fixed.y = newOptions.fixed.y; } } } if (allowDeletion === true && newOptions.font === null) { parentOptions.font = util.bridgeObject(globalOptions.font); // set the object back to the global options } Node.updateGroupOptions(parentOptions, newOptions, groupList); // handle the scaling options, specifically the label part if (newOptions.scaling !== undefined) { util.mergeOptions(parentOptions.scaling, newOptions.scaling, 'label', globalOptions.scaling); } } /** * * @returns {{color: *, borderWidth: *, borderColor: *, size: *, borderDashes: (boolean|Array|allOptions.nodes.shapeProperties.borderDashes|{boolean, array}), borderRadius: (number|allOptions.nodes.shapeProperties.borderRadius|{number}|Array), shadow: *, shadowColor: *, shadowSize: *, shadowX: *, shadowY: *}} */ getFormattingValues() { let values = { color: this.options.color.background, borderWidth: this.options.borderWidth, borderColor: this.options.color.border, size: this.options.size, borderDashes: this.options.shapeProperties.borderDashes, borderRadius: this.options.shapeProperties.borderRadius, shadow: this.options.shadow.enabled, shadowColor: this.options.shadow.color, shadowSize: this.options.shadow.size, shadowX: this.options.shadow.x, shadowY: this.options.shadow.y }; if (this.selected || this.hover) { if (this.chooser === true) { if (this.selected) { values.borderWidth *= 2; values.color = this.options.color.highlight.background; values.borderColor = this.options.color.highlight.border; values.shadow = this.options.shadow.enabled; } else if (this.hover) { values.color = this.options.color.hover.background; values.borderColor = this.options.color.hover.border; values.shadow = this.options.shadow.enabled; } } else if (typeof this.chooser === 'function') { this.chooser(values, this.options.id, this.selected, this.hover); if (values.shadow === false) { if ((values.shadowColor !== this.options.shadow.color) || (values.shadowSize !== this.options.shadow.size) || (values.shadowX !== this.options.shadow.x) || (values.shadowY !== this.options.shadow.y)) { values.shadow = true; } } } } else { values.shadow = this.options.shadow.enabled; } return values; } /** * * @param {Object} options */ updateLabelModule(options) { if (this.options.label === undefined || this.options.label === null) { this.options.label = ''; } Node.updateGroupOptions(this.options, options, this.grouplist); // // Note:The prototype chain for this.options is: // // this.options -> NodesHandler.options -> NodesHandler.defaultOptions // (also: this.globalOptions) // // Note that the prototypes are mentioned explicitly in the pile list below; // WE DON'T WANT THE ORDER OF THE PROTOTYPES!!!! At least, not for font handling of labels. // This is a good indication that the prototype usage of options is deficient. // var currentGroup = this.grouplist.get(this.options.group, false); let pile = [ options, // new options this.options, // current node options, see comment above for prototype currentGroup, // group options, if any this.globalOptions, // Currently set global node options this.defaultOptions // Default global node options ]; this.labelModule.update(this.options, pile); if (this.labelModule.baseSize !== undefined) { this.baseFontSize = this.labelModule.baseSize; } } /** * * @param {string} currentShape */ updateShape(currentShape) { if (currentShape === this.options.shape && this.shape) { this.shape.setOptions(this.options, this.imageObj, this.imageObjAlt); } else { // choose draw method depending on the shape switch (this.options.shape) { case 'box': this.shape = new Box(this.options, this.body, this.labelModule); break; case 'circle': this.shape = new Circle(this.options, this.body, this.labelModule); break; case 'circularImage': this.shape = new CircularImage(this.options, this.body, this.labelModule, this.imageObj, this.imageObjAlt); break; case 'database': this.shape = new Database(this.options, this.body, this.labelModule); break; case 'diamond': this.shape = new Diamond(this.options, this.body, this.labelModule); break; case 'dot': this.shape = new Dot(this.options, this.body, this.labelModule); break; case 'ellipse': this.shape = new Ellipse(this.options, this.body, this.labelModule); break; case 'icon': this.shape = new Icon(this.options, this.body, this.labelModule); break; case 'image': this.shape = new Image(this.options, this.body, this.labelModule, this.imageObj, this.imageObjAlt); break; case 'square': this.shape = new Square(this.options, this.body, this.labelModule); break; case 'hexagon': this.shape = new Hexagon(this.options, this.body, this.labelModule); break; case 'star': this.shape = new Star(this.options, this.body, this.labelModule); break; case 'text': this.shape = new Text(this.options, this.body, this.labelModule); break; case 'triangle': this.shape = new Triangle(this.options, this.body, this.labelModule); break; case 'triangleDown': this.shape = new TriangleDown(this.options, this.body, this.labelModule); break; default: this.shape = new Ellipse(this.options, this.body, this.labelModule); break; } } this.needsRefresh(); } /** * select this node */ select() { this.selected = true; this.needsRefresh(); } /** * unselect this node */ unselect() { this.selected = false; this.needsRefresh(); } /** * Reset the calculated size of the node, forces it to recalculate its size */ needsRefresh() { this.shape.refreshNeeded = true; } /** * get the title of this node. * @return {string} title The title of the node, or undefined when no title * has been set. */ getTitle() { return this.options.title; } /** * Calculate the distance to the border of the Node * @param {CanvasRenderingContext2D} ctx * @param {number} angle Angle in radians * @returns {number} distance Distance to the border in pixels */ distanceToBorder(ctx, angle) { return this.shape.distanceToBorder(ctx,angle); } /** * Check if this node has a fixed x and y position * @return {boolean} true if fixed, false if not */ isFixed() { return (this.options.fixed.x && this.options.fixed.y); } /** * check if this node is selecte * @return {boolean} selected True if node is selected, else false */ isSelected() { return this.selected; } /** * Retrieve the value of the node. Can be undefined * @return {number} value */ getValue() { return this.options.value; } /** * Get the current dimensions of the label * * @return {rect} */ getLabelSize() { return this.labelModule.size(); } /** * Adjust the value range of the node. The node will adjust it's size * based on its value. * @param {number} min * @param {number} max * @param {number} total */ setValueRange(min, max, total) { if (this.options.value !== undefined) { var scale = this.options.scaling.customScalingFunction(min, max, total, this.options.value); var sizeDiff = this.options.scaling.max - this.options.scaling.min; if (this.options.scaling.label.enabled === true) { var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min; this.options.font.size = this.options.scaling.label.min + scale * fontDiff; } this.options.size = this.options.scaling.min + scale * sizeDiff; } else { this.options.size = this.baseSize; this.options.font.size = this.baseFontSize; } this.updateLabelModule(); } /** * Draw this node in the given canvas * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); * @param {CanvasRenderingContext2D} ctx */ draw(ctx) { let values = this.getFormattingValues(); this.shape.draw(ctx, this.x, this.y, this.selected, this.hover, values); } /** * Update the bounding box of the shape * @param {CanvasRenderingContext2D} ctx */ updateBoundingBox(ctx) { this.shape.updateBoundingBox(this.x,this.y,ctx); } /** * Recalculate the size of this node in the given canvas * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); * @param {CanvasRenderingContext2D} ctx */ resize(ctx) { let values = this.getFormattingValues(); this.shape.resize(ctx, this.selected, this.hover, values); } /** * Determine all visual elements of this node instance, in which the given * point falls within the bounding shape. * * @param {point} point * @returns {Array.} list with the items which are on the point */ getItemsOnPoint(point) { var ret = []; if (this.labelModule.visible()) { if (ComponentUtil.pointInRect(this.labelModule.getSize(), point)) { ret.push({nodeId:this.id, labelId:0}); } } if (ComponentUtil.pointInRect(this.shape.boundingBox, point)) { ret.push({nodeId:this.id}); } return ret; } /** * Check if this object is overlapping with the provided object * @param {Object} obj an object with parameters left, top, right, bottom * @return {boolean} True if location is located on node */ isOverlappingWith(obj) { return ( this.shape.left < obj.right && this.shape.left + this.shape.width > obj.left && this.shape.top < obj.bottom && this.shape.top + this.shape.height > obj.top ); } /** * Check if this object is overlapping with the provided object * @param {Object} obj an object with parameters left, top, right, bottom * @return {boolean} True if location is located on node */ isBoundingBoxOverlappingWith(obj) { return ( this.shape.boundingBox.left < obj.right && this.shape.boundingBox.right > obj.left && this.shape.boundingBox.top < obj.bottom && this.shape.boundingBox.bottom > obj.top ); } /** * Check valid values for mass * * The mass may not be negative or zero. If it is, reset to 1 * * @param {object} options * @param {Node.id} id * @static */ static checkMass(options, id) { if (options.mass !== undefined && options.mass <= 0) { let strId = ''; if (id !== undefined) { strId = ' in node id: ' + id; } console.log('%cNegative or zero mass disallowed' + strId + ', setting mass to 1.' , printStyle); options.mass = 1; } } } export default Node;