813 lines
29 KiB
JavaScript
813 lines
29 KiB
JavaScript
// Events Component - Visualizes websocket events as a graph
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class EventComponent extends Component {
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constructor(container, viewModel, eventBus) {
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super(container, viewModel, eventBus);
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this.svg = null;
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this.simulation = null;
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this.zoom = null;
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this.width = 0;
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this.height = 0;
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this.isInitialized = false;
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// Center node data - will be initialized with proper coordinates later
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this.centerNode = { id: 'center', type: 'center', label: '', x: 0, y: 0 };
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// Track nodes for D3
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this.graphNodes = [];
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this.graphLinks = [];
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// Track recent events to trigger animations
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this.lastSeenEvents = new Set();
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}
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updateDimensions() {
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const container = this.findElement('#events-graph-container');
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if (!container) {
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logger.error('EventComponent: Container not found!');
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return;
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}
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const rect = container.getBoundingClientRect();
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this.width = rect.width || 1400;
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this.height = rect.height || 800;
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this.width = Math.max(this.width, 800);
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this.height = Math.max(this.height, 600);
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}
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mount() {
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if (this.isMounted) return;
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if (!this.isInitialized) {
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this.initialize();
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}
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this.isMounted = true;
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this.setupEventListeners();
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this.setupViewModelListeners();
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this.render();
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}
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initialize() {
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if (this.isInitialized) return;
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// Create SVG
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const container = this.findElement('#events-graph-container');
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if (!container) {
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logger.error('EventComponent: Container not found');
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return;
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}
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this.updateDimensions();
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// Clear container
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container.innerHTML = '';
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// Create a wrapper div for relative positioning
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const wrapper = document.createElement('div');
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wrapper.style.cssText = 'position: relative; width: 100%; height: 100%; overflow: hidden;';
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container.appendChild(wrapper);
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// Store wrapper for button placement
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this.wrapper = wrapper;
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// Add rearrange button
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this.createRearrangeButton(wrapper);
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// Create SVG with D3 - match topology view style
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this.svg = d3.select(wrapper)
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.append('svg')
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.attr('width', '100%')
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.attr('height', '100%')
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.attr('viewBox', `0 0 ${this.width} ${this.height}`)
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.style('border', '1px solid rgba(255, 255, 255, 0.1)')
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.style('border-radius', '12px');
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// Create zoom behavior
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this.zoom = d3.zoom()
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.scaleExtent([0.5, 5])
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.on('zoom', (event) => {
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this.svg.select('g').attr('transform', event.transform);
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});
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this.svg.call(this.zoom);
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// Create main group for graph elements
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const mainGroup = this.svg.append('g');
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// Apply initial zoom to show the graph more zoomed in
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mainGroup.attr('transform', 'scale(1.4) translate(-200, -150)');
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// Initialize simulation
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this.simulation = d3.forceSimulation()
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.force('link', d3.forceLink().id(d => d.id).distance(100))
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.force('charge', d3.forceManyBody().strength(-300))
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.force('center', d3.forceCenter(this.width / 2, this.height / 2))
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.force('collision', d3.forceCollide().radius(35))
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.alphaDecay(0.0228) // Slower decay to allow simulation to run longer
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.velocityDecay(0.4); // Higher velocity decay for smoother, less jumpy movement
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this.isInitialized = true;
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}
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setupEventListeners() {
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// Handle window resize
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this.addEventListener(window, 'resize', () => {
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if (this.resizeTimeout) clearTimeout(this.resizeTimeout);
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this.resizeTimeout = setTimeout(() => {
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this.handleResize();
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}, 250);
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});
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}
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handleResize() {
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const container = this.findElement('#events-graph-container');
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if (container && this.svg) {
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this.updateDimensions();
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this.svg.attr('viewBox', `0 0 ${this.width} ${this.height}`);
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if (this.simulation) {
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this.simulation.force('center', d3.forceCenter(this.width / 2, this.height / 2));
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this.simulation.alpha(0.3).restart();
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}
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}
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}
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setupViewModelListeners() {
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// Listen for events changes
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this.subscribeToProperty('events', (newValue, previousValue) => {
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// Check for new or updated events to animate
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if (newValue && newValue.size > 0 && previousValue) {
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for (const [topic, data] of newValue) {
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const prevData = previousValue.get(topic);
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if (!prevData || data.count > prevData.count) {
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// New event or count increased - trigger animation
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this.animateEventMessage(topic, data);
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}
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}
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}
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// Remove empty state if it exists
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if (this.svg) {
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const g = this.svg.select('g');
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if (!g.empty()) {
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g.selectAll('.empty-state').remove();
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}
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}
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this.updateGraph();
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});
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// Listen for lastUpdateTime changes
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this.subscribeToProperty('lastUpdateTime', () => {
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this.updateGraph();
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});
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}
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updateGraph() {
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if (!this.isInitialized || !this.svg) {
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return;
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}
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const events = this.viewModel.get('events');
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// Get existing nodes from simulation to preserve positions
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const existingNodesMap = new Map();
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if (this.simulation && this.simulation.nodes) {
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this.simulation.nodes().forEach(node => {
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existingNodesMap.set(node.id, node);
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});
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}
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// Create nodes map with center node (always present)
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const nodesMap = new Map();
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const centerX = this.width / 2;
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const centerY = this.height / 2;
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// Check if center node already exists in simulation (has been dragged)
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const existingCenter = existingNodesMap.get('center');
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let centerNodeWithPos;
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if (existingCenter && existingCenter.fx !== undefined && existingCenter.fy !== undefined) {
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// Preserve the dragged position
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centerNodeWithPos = {
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...this.centerNode,
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x: existingCenter.fx !== null ? existingCenter.fx : existingCenter.x,
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y: existingCenter.fy !== null ? existingCenter.fy : existingCenter.y,
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fx: existingCenter.fx,
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fy: existingCenter.fy
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};
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} else {
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// New center node at center, or if it was never dragged
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centerNodeWithPos = {
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...this.centerNode,
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x: centerX,
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y: centerY,
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fx: null,
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fy: null
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};
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}
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nodesMap.set('center', centerNodeWithPos);
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// Only process events if they exist
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if (events && events.size > 0) {
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// First pass: create all unique topic part nodes with proper hierarchy
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for (const [topic, data] of events) {
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data.parts.forEach((part, index) => {
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if (!nodesMap.has(part)) {
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const existingNode = existingNodesMap.get(part);
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if (existingNode && existingNode.x && existingNode.y) {
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// Preserve existing position
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nodesMap.set(part, {
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id: part,
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type: 'topic',
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label: part,
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count: 0,
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x: existingNode.x,
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y: existingNode.y,
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fx: existingNode.fx,
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fy: existingNode.fy
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});
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} else {
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// Determine where to place this new node based on hierarchy
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let parentPart;
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let refPos;
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if (index === 0) {
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// First part connects to center
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parentPart = 'center';
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} else {
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// Subsequent parts connect to previous part in this topic
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parentPart = data.parts[index - 1];
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}
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// Get parent position (should exist since we process in order)
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refPos = nodesMap.get(parentPart);
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// Fallback to center if parent doesn't exist yet
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if (!refPos) {
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refPos = nodesMap.get('center');
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}
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// Initialize new node very close to its parent
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const angle = Math.random() * Math.PI * 2;
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const distance = 60 + Math.random() * 30;
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nodesMap.set(part, {
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id: part,
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type: 'topic',
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label: part,
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count: 0,
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x: refPos.x + Math.cos(angle) * distance,
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y: refPos.y + Math.sin(angle) * distance,
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fx: null,
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fy: null
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});
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}
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}
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});
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}
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// Second pass: count occurrences of each part
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for (const [topic, data] of events) {
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data.parts.forEach(part => {
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const node = nodesMap.get(part);
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if (node) {
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node.count += data.count;
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}
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});
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}
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}
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this.graphNodes = Array.from(nodesMap.values());
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// Build links as chains for each topic
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// For "cluster/update", create: center -> cluster -> update
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this.graphLinks = [];
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const linkSet = new Set(); // Track links to avoid duplicates
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if (events && events.size > 0) {
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for (const [topic, data] of events) {
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const parts = data.parts;
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if (parts.length === 0) continue;
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// Connect center to first part
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const firstPart = parts[0];
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const centerToFirst = `center-${firstPart}`;
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if (!linkSet.has(centerToFirst)) {
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this.graphLinks.push({
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source: 'center',
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target: firstPart,
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type: 'center-link',
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count: data.count,
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topic: topic
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});
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linkSet.add(centerToFirst);
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} else {
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// Update count for existing link
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const existingLink = this.graphLinks.find(l =>
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`${l.source}-${l.target}` === centerToFirst
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);
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if (existingLink) {
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existingLink.count += data.count;
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}
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}
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// Connect each part to the next (creating a chain)
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for (let i = 0; i < parts.length - 1; i++) {
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const source = parts[i];
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const target = parts[i + 1];
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const linkKey = `${source}-${target}`;
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if (!linkSet.has(linkKey)) {
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this.graphLinks.push({
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source: source,
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target: target,
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type: 'topic-link',
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topic: topic,
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count: data.count
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});
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linkSet.add(linkKey);
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} else {
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// Update count for existing link
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const existingLink = this.graphLinks.find(l =>
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`${l.source}-${l.target}` === linkKey
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);
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if (existingLink) {
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existingLink.count += data.count;
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}
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}
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}
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}
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}
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// Update D3 simulation
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this.updateSimulation();
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}
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updateSimulation() {
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const g = this.svg.select('g');
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if (!g || g.empty()) {
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return;
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}
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// Update links
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const links = g.selectAll('.link')
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.data(this.graphLinks, d => `${d.source}-${d.target}`);
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// Remove old links
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links.exit()
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.transition()
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.duration(300)
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.style('opacity', 0)
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.remove();
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// Add new links
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const linksEnter = links.enter()
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.append('line')
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.attr('class', d => `link ${d.type}`)
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.attr('stroke-opacity', 0);
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// Merge and create linksUpdate
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const linksUpdate = linksEnter.merge(links);
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// Add hover interactions to all links (existing ones will be updated)
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linksUpdate
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.on('mouseover', function(event, d) {
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d3.select(event.currentTarget)
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.attr('stroke-width', d => d.type === 'topic-link' ? Math.max(3, Math.min(5, Math.sqrt(d.count) + 2)) : 3.5)
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.attr('stroke-opacity', 0.9);
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})
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.on('mouseout', function(event, d) {
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d3.select(event.currentTarget)
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.attr('stroke-width', d => d.type === 'topic-link' ? Math.max(1.5, Math.min(4, Math.sqrt(d.count) + 1)) : 2.5)
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.attr('stroke-opacity', 0.7);
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});
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// Update link attributes directly (no transitions to avoid event conflicts)
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linksUpdate
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.attr('stroke', d => {
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if (d.type === 'center-link') return '#3498db';
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return '#10b981';
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})
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.attr('stroke-opacity', 0.7)
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.attr('stroke-width', d => {
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if (d.type === 'topic-link') return Math.max(1.5, Math.min(4, Math.sqrt(d.count) + 1));
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return 2.5;
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});
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// Update nodes
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const nodes = g.selectAll('.node')
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.data(this.graphNodes, d => d.id);
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// Remove old nodes
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nodes.exit()
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.transition()
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.duration(300)
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.style('opacity', 0)
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.remove();
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// Add new nodes
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const nodesEnter = nodes.enter()
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.append('g')
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.attr('class', d => `node ${d.type}`)
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.style('opacity', 0)
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.call(this.drag());
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// Add circle
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nodesEnter.append('circle')
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.attr('r', d => d.type === 'center' ? 18 : 14)
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.attr('fill', d => {
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if (d.type === 'center') return '#3498db';
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return '#10b981';
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})
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.attr('stroke', '#fff')
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.attr('stroke-width', 2.5);
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// Add text labels
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nodesEnter.append('text')
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.attr('dy', d => d.type === 'center' ? -28 : -20)
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.attr('text-anchor', 'middle')
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.attr('font-size', d => d.type === 'center' ? '16px' : '13px')
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.attr('fill', 'var(--text-primary)')
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.attr('font-weight', '600')
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.text(d => d.label);
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// Merge and update all nodes
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const nodesUpdate = nodesEnter.merge(nodes);
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// Update node visibility
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nodesUpdate.style('opacity', 1);
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// Update circles
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nodesUpdate.select('circle')
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.attr('r', d => d.type === 'center' ? 18 : 14)
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.attr('fill', d => {
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if (d.type === 'center') return '#3498db';
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return '#10b981';
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});
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// Update text labels
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nodesUpdate.select('text')
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.text(d => d.label);
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// Remove any existing count badges
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nodesUpdate.selectAll('.count-badge').remove();
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// Update simulation
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this.simulation.nodes(this.graphNodes);
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// Only add links force if there are links
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if (this.graphLinks.length > 0) {
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const linkForce = this.simulation.force('link');
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if (linkForce) {
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linkForce.links(this.graphLinks);
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} else {
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// Create the link force if it doesn't exist
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this.simulation.force('link', d3.forceLink().id(d => d.id).distance(100));
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this.simulation.force('link').links(this.graphLinks);
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}
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} else {
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// Remove link force if no links
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this.simulation.force('link', null);
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}
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// Update positions on tick
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this.simulation.on('tick', () => {
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if (linksUpdate && this.graphLinks.length > 0) {
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linksUpdate.each(function(d) {
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const link = d3.select(this);
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// Calculate direction from source to target
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const dx = d.target.x - d.source.x;
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const dy = d.target.y - d.source.y;
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const length = Math.sqrt(dx * dx + dy * dy);
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if (length > 0) {
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// Normalize direction vector
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const nx = dx / length;
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const ny = dy / length;
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// Edge radius based on target node type
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const targetRadius = d.target.type === 'center' ? 18 : 14;
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const sourceRadius = d.source.type === 'center' ? 18 : 14;
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// Start from edge of source node
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const x1 = d.source.x + nx * sourceRadius;
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const y1 = d.source.y + ny * sourceRadius;
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// End at edge of target node
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const x2 = d.target.x - nx * targetRadius;
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const y2 = d.target.y - ny * targetRadius;
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link.attr('x1', x1)
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.attr('y1', y1)
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.attr('x2', x2)
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.attr('y2', y2);
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}
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});
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}
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nodesUpdate
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.attr('transform', d => `translate(${d.x},${d.y})`);
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});
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// Use lower alpha to avoid jumping - just tweak positions gently
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this.simulation.alpha(0.3).restart();
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}
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drag() {
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const simulation = this.simulation;
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const component = this;
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let initialCenterX = 0;
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let initialCenterY = 0;
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function dragstarted(event, d) {
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if (!event.active) simulation.alphaTarget(0.3).restart();
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d.fx = d.x;
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d.fy = d.y;
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// If dragging the center node, store initial position and get all nodes
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if (d.type === 'center') {
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initialCenterX = d.x;
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initialCenterY = d.y;
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}
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}
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function dragged(event, d) {
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d.fx = event.x;
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d.fy = event.y;
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// If dragging the center node, move all other nodes by the same offset
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if (d.type === 'center') {
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const dx = event.x - initialCenterX;
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const dy = event.y - initialCenterY;
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// Apply the same offset to all other nodes
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simulation.nodes().forEach(node => {
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if (node.id !== 'center') {
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node.fx = node.x + dx;
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node.fy = node.y + dy;
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}
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});
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// Update initial position for next iteration
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|
initialCenterX = event.x;
|
|
initialCenterY = event.y;
|
|
}
|
|
}
|
|
|
|
function dragended(event, d) {
|
|
if (!event.active) simulation.alphaTarget(0);
|
|
// Keep positions fixed after dragging
|
|
d.fx = d.x;
|
|
d.fy = d.y;
|
|
|
|
// If dragging the center node, preserve all node positions
|
|
if (d.type === 'center') {
|
|
simulation.nodes().forEach(node => {
|
|
node.fx = node.x;
|
|
node.fy = node.y;
|
|
});
|
|
}
|
|
}
|
|
|
|
return d3.drag()
|
|
.on('start', dragstarted)
|
|
.on('drag', dragged)
|
|
.on('end', dragended);
|
|
}
|
|
|
|
render() {
|
|
if (!this.isInitialized) {
|
|
this.initialize();
|
|
}
|
|
|
|
const events = this.viewModel.get('events');
|
|
|
|
// If no events exist yet, show an empty state message
|
|
if (!events || events.size === 0) {
|
|
this.showEmptyState();
|
|
} else {
|
|
// Remove empty state if it exists
|
|
const g = this.svg.select('g');
|
|
if (!g.empty()) {
|
|
g.selectAll('.empty-state').remove();
|
|
}
|
|
}
|
|
|
|
// Always call updateGraph to show at least the center node
|
|
this.updateGraph();
|
|
}
|
|
|
|
showEmptyState() {
|
|
if (!this.isInitialized || !this.svg) return;
|
|
|
|
const g = this.svg.select('g');
|
|
if (g.empty()) return;
|
|
|
|
// Remove any existing message
|
|
g.selectAll('.empty-state').remove();
|
|
|
|
// Account for the initial zoom transform (scale(1.4) translate(-200, -150))
|
|
// We need to place the text in the center of the transformed coordinate space
|
|
const transformX = -200;
|
|
const transformY = -150;
|
|
const scale = 1.4;
|
|
|
|
// Calculate centered position in transformed space
|
|
const x = ((this.width / 2) - transformX) / scale;
|
|
const y = ((this.height / 2) - transformY) / scale;
|
|
|
|
const emptyMsg = g.append('text')
|
|
.attr('class', 'empty-state')
|
|
.attr('x', x)
|
|
.attr('y', y)
|
|
.attr('text-anchor', 'middle')
|
|
.attr('font-size', '18px')
|
|
.attr('fill', 'var(--text-secondary)')
|
|
.attr('font-weight', '500')
|
|
.text('Waiting for websocket events...');
|
|
}
|
|
|
|
onPause() {
|
|
if (this.simulation) {
|
|
this.simulation.stop();
|
|
}
|
|
}
|
|
|
|
onResume() {
|
|
if (this.simulation) {
|
|
this.simulation.alpha(0.3).restart();
|
|
}
|
|
}
|
|
|
|
shouldRenderOnResume() {
|
|
return false;
|
|
}
|
|
|
|
createRearrangeButton(container) {
|
|
const button = document.createElement('button');
|
|
button.className = 'topology-rearrange-btn';
|
|
button.innerHTML = `
|
|
<svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
|
|
<circle cx="12" cy="5" r="1.5"/>
|
|
<circle cx="12" cy="12" r="1.5"/>
|
|
<circle cx="12" cy="19" r="1.5"/>
|
|
<circle cx="5" cy="12" r="1.5"/>
|
|
<circle cx="19" cy="12" r="1.5"/>
|
|
<path d="M12 7v3m0 2v3m-5-3h3m2 0h3"/>
|
|
</svg>
|
|
<span>Rearrange</span>
|
|
`;
|
|
button.title = 'Rearrange nodes into a clean layout';
|
|
button.style.cssText = `
|
|
position: absolute;
|
|
left: 16px;
|
|
top: 16px;
|
|
z-index: 1000;
|
|
display: flex;
|
|
align-items: center;
|
|
gap: 8px;
|
|
padding: 8px 14px;
|
|
background: var(--card-background, rgba(30, 30, 30, 0.95));
|
|
border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
|
|
border-radius: 8px;
|
|
color: var(--text-primary, #ecf0f1);
|
|
font-size: 13px;
|
|
font-weight: 500;
|
|
cursor: pointer;
|
|
transition: all 0.2s ease;
|
|
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
|
|
`;
|
|
|
|
// Add hover effect
|
|
button.addEventListener('mouseenter', () => {
|
|
button.style.background = 'var(--card-hover, rgba(40, 40, 40, 0.95))';
|
|
button.style.borderColor = 'var(--primary-color, #3498db)';
|
|
button.style.transform = 'translateY(-1px)';
|
|
button.style.boxShadow = '0 4px 12px rgba(0, 0, 0, 0.3)';
|
|
});
|
|
|
|
button.addEventListener('mouseleave', () => {
|
|
button.style.background = 'var(--card-background, rgba(30, 30, 30, 0.95))';
|
|
button.style.borderColor = 'var(--border-color, rgba(255, 255, 255, 0.1))';
|
|
button.style.transform = 'translateY(0)';
|
|
button.style.boxShadow = '0 2px 8px rgba(0, 0, 0, 0.2)';
|
|
});
|
|
|
|
// Add click handler
|
|
button.addEventListener('click', () => {
|
|
this.rearrangeNodes();
|
|
});
|
|
|
|
container.appendChild(button);
|
|
}
|
|
|
|
rearrangeNodes() {
|
|
if (!this.simulation) {
|
|
return;
|
|
}
|
|
|
|
// Clear fixed positions for all nodes except center
|
|
this.graphNodes.forEach(node => {
|
|
if (node.type !== 'center') {
|
|
node.fx = null;
|
|
node.fy = null;
|
|
}
|
|
});
|
|
|
|
// Restart simulation with higher energy
|
|
this.simulation.alpha(1).restart();
|
|
}
|
|
|
|
animateEventMessage(topic, data) {
|
|
const g = this.svg.select('g');
|
|
if (g.empty()) return;
|
|
|
|
const parts = data.parts || topic.split('/').filter(p => p);
|
|
if (parts.length === 0) return;
|
|
|
|
// Wait for the next tick to ensure nodes exist
|
|
setTimeout(() => {
|
|
// Build the chain: center -> first -> second -> ... -> last
|
|
const chain = ['center', ...parts];
|
|
|
|
// Animate along each segment of the chain
|
|
let delay = 0;
|
|
for (let i = 0; i < chain.length - 1; i++) {
|
|
const sourceId = chain[i];
|
|
const targetId = chain[i + 1];
|
|
|
|
const sourceNode = this.graphNodes.find(n => n.id === sourceId);
|
|
const targetNode = this.graphNodes.find(n => n.id === targetId);
|
|
|
|
if (!sourceNode || !targetNode) continue;
|
|
|
|
setTimeout(() => {
|
|
this.animateDotAlongLink(sourceNode, targetNode, g);
|
|
}, delay);
|
|
|
|
// Add delay between segments (staggered animation)
|
|
delay += 400; // Duration (300ms) + small gap (100ms)
|
|
}
|
|
}, 100);
|
|
}
|
|
|
|
animateDotAlongLink(sourceNode, targetNode, g) {
|
|
if (!sourceNode || !targetNode || !g) return;
|
|
|
|
// Calculate positions
|
|
const dx = targetNode.x - sourceNode.x;
|
|
const dy = targetNode.y - sourceNode.y;
|
|
const length = Math.sqrt(dx * dx + dy * dy);
|
|
|
|
if (length === 0) return;
|
|
|
|
// Normalize direction
|
|
const nx = dx / length;
|
|
const ny = dy / length;
|
|
|
|
// Calculate node radii
|
|
const sourceRadius = sourceNode.type === 'center' ? 18 : 14;
|
|
const targetRadius = targetNode.type === 'center' ? 18 : 14;
|
|
|
|
// Start from edge of source node
|
|
const startX = sourceNode.x + nx * sourceRadius;
|
|
const startY = sourceNode.y + ny * sourceRadius;
|
|
|
|
// End at edge of target node
|
|
const endX = targetNode.x - nx * targetRadius;
|
|
const endY = targetNode.y - ny * targetRadius;
|
|
|
|
// Create animation dot
|
|
const animationGroup = g.append('g').attr('class', 'animation-group');
|
|
|
|
const dot = animationGroup.append('circle')
|
|
.attr('r', 4)
|
|
.attr('fill', '#FFD700')
|
|
.attr('stroke', '#fff')
|
|
.attr('stroke-width', 2)
|
|
.attr('cx', startX)
|
|
.attr('cy', startY);
|
|
|
|
// Animate the dot along the path
|
|
dot.transition()
|
|
.duration(300)
|
|
.ease(d3.easeLinear)
|
|
.attr('cx', endX)
|
|
.attr('cy', endY)
|
|
.on('end', function() {
|
|
// Fade out after reaching destination
|
|
dot.transition()
|
|
.duration(100)
|
|
.style('opacity', 0)
|
|
.remove();
|
|
animationGroup.remove();
|
|
});
|
|
}
|
|
}
|
|
|
|
window.EventComponent = EventComponent;
|