Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 | 'use client' import { useState, useEffect } from 'react' import useMeasure from 'react-use-measure' import { css, cx } from '../../../styled-system/css' interface DecisionOption { label: string value: string /** Label shown on the edge path (e.g., "Yes", "No", "Undo +") */ pathLabel?: string /** Where this option leads (next node title) */ leadsTo?: string } interface FlowchartDecisionGraphProps { /** Title of the current decision node */ nodeTitle: string /** Body content of the decision node (the actual question) */ nodeBody: string[] /** The available options */ options: DecisionOption[] /** Called when user selects an option */ onSelect: (value: string) => void /** Wrong answer for shake animation feedback */ wrongAnswer?: string /** Correct answer to highlight */ correctAnswer?: string /** Whether to disable interactions during feedback */ disabled?: boolean /** Whether there's a previous node to connect from */ hasPreviousNode?: boolean } // Layout constants const BUTTON_WIDTH = 100 const BUTTON_HEIGHT = 36 const BUTTON_GAP = 20 const EDGE_LENGTH = 40 const LABEL_OFFSET_Y = -8 const MIN_DIAMOND_SIZE = 44 const DIAMOND_PADDING = 8 // Padding around text inside diamond const INCOMING_EDGE_LENGTH = 24 // Length of edge from previous node /** * Flowchart-style decision visualization using pure SVG with foreignObject for buttons. * Layout: [Option A] ←─ ◇ ─→ [Option B] */ export function FlowchartDecisionGraph({ nodeTitle, nodeBody, options, onSelect, wrongAnswer, correctAnswer, disabled = false, hasPreviousNode = false, }: FlowchartDecisionGraphProps) { const [isShaking, setIsShaking] = useState(false) const [measureRef, bounds] = useMeasure() // Shake animation on wrong answer useEffect(() => { if (wrongAnswer) { setIsShaking(true) const timer = setTimeout(() => setIsShaking(false), 500) return () => clearTimeout(timer) } }, [wrongAnswer]) const displayLabel = `📍 ${nodeTitle}` // Calculate diamond size based on measured text width // Text can extend slightly beyond inscribed rectangle, so use 0.9 factor const textWidth = bounds.width || displayLabel.length * 7 // Fallback estimate until measured const diamondSize = Math.max(MIN_DIAMOND_SIZE, Math.ceil((textWidth + DIAMOND_PADDING) / 0.9)) const incomingEdgeSpace = hasPreviousNode ? INCOMING_EDGE_LENGTH : 0 const svgHeight = diamondSize + 20 + incomingEdgeSpace // Vertical padding + incoming edge // Calculate SVG width based on number of options const totalButtonsWidth = options.length * BUTTON_WIDTH + (options.length - 1) * BUTTON_GAP const svgWidth = totalButtonsWidth + diamondSize + EDGE_LENGTH * 2 + 40 // Center point - offset down if there's an incoming edge const centerX = svgWidth / 2 const centerY = (svgHeight + incomingEdgeSpace) / 2 // Diamond corners (rotated square) const diamondHalf = diamondSize / 2 const diamondLeft = centerX - diamondHalf const diamondRight = centerX + diamondHalf // Split options: left half and right half const leftOptions = options.slice(0, Math.ceil(options.length / 2)) const rightOptions = options.slice(Math.ceil(options.length / 2)) // Calculate button positions const getLeftButtonX = (idx: number) => { const totalLeft = leftOptions.length * BUTTON_WIDTH + (leftOptions.length - 1) * BUTTON_GAP const startX = diamondLeft - EDGE_LENGTH - totalLeft return startX + idx * (BUTTON_WIDTH + BUTTON_GAP) } const getRightButtonX = (idx: number) => { const startX = diamondRight + EDGE_LENGTH return startX + idx * (BUTTON_WIDTH + BUTTON_GAP) } const buttonY = centerY - BUTTON_HEIGHT / 2 return ( <div data-testid="decision-graph" data-option-count={options.length} className={cx( css({ display: 'flex', flexDirection: 'column', alignItems: 'center', gap: '2', padding: '2', }), isShaking ? 'shake-animation' : '' )} > {/* Hidden span for measuring text width */} <span ref={measureRef} data-element="measure-span" className={css({ position: 'absolute', visibility: 'hidden', whiteSpace: 'nowrap', fontSize: '12px', fontWeight: 'bold', pointerEvents: 'none', })} > {displayLabel} </span> {/* Question content from node body */} {nodeBody.length > 0 && ( <div data-element="decision-question" className={css({ textAlign: 'center', fontSize: 'sm', fontWeight: 'medium', color: { base: 'gray.700', _dark: 'gray.200' }, maxWidth: '400px', })} > {nodeBody.map((line, idx) => ( <p key={idx} data-element="decision-question-line"> {line} </p> ))} </div> )} <svg data-element="decision-graph-svg" data-svg-width={svgWidth} data-svg-height={svgHeight} width={svgWidth} height={svgHeight} viewBox={`0 0 ${svgWidth} ${svgHeight}`} className={css({ overflow: 'visible' })} > {/* Layer 1: Edge lines (bottom layer) */} <g data-element="edges-layer"> {/* Incoming edge from previous node */} {hasPreviousNode && ( <g data-element="incoming-edge-group"> <line data-element="incoming-edge-line" x1={centerX} y1={0} x2={centerX} y2={centerY - diamondHalf} strokeWidth={2} className={css({ stroke: { base: '#9ca3af', _dark: '#6b7280' }, })} /> {/* Arrow pointing down to diamond */} <polygon data-element="incoming-edge-arrow" points={`${centerX - 4},${centerY - diamondHalf - 6} ${centerX + 4},${centerY - diamondHalf - 6} ${centerX},${centerY - diamondHalf}`} className={css({ fill: { base: '#9ca3af', _dark: '#6b7280' }, })} /> </g> )} {/* Left side edges */} {leftOptions.map((option, idx) => { const buttonX = getLeftButtonX(idx) const edgeStartX = buttonX + BUTTON_WIDTH const edgeEndX = diamondLeft return ( <g key={option.value} data-element="left-edge-group" data-option-index={idx} data-option-value={option.value} > <line data-element="edge-line" data-edge-side="left" x1={edgeStartX} y1={centerY} x2={edgeEndX} y2={centerY} strokeWidth={2} className={css({ stroke: { base: '#9ca3af', _dark: '#6b7280' }, })} /> <polygon data-element="edge-arrow" data-arrow-side="left" points={`${edgeStartX + 8},${centerY - 4} ${edgeStartX + 8},${centerY + 4} ${edgeStartX},${centerY}`} className={css({ fill: { base: '#9ca3af', _dark: '#6b7280' }, })} /> {option.pathLabel && ( <text data-element="edge-label" data-label-text={option.pathLabel} x={(edgeStartX + edgeEndX) / 2} y={centerY + LABEL_OFFSET_Y} textAnchor="middle" className={css({ fontSize: '11px', fontWeight: 'medium', fill: { base: '#6b7280', _dark: '#9ca3af' }, })} > {option.pathLabel} </text> )} </g> ) })} {/* Right side edges */} {rightOptions.map((option, idx) => { const actualIdx = leftOptions.length + idx const buttonX = getRightButtonX(idx) const edgeStartX = diamondRight const edgeEndX = buttonX return ( <g key={option.value} data-element="right-edge-group" data-option-index={actualIdx} data-option-value={option.value} > <line data-element="edge-line" data-edge-side="right" x1={edgeStartX} y1={centerY} x2={edgeEndX} y2={centerY} strokeWidth={2} className={css({ stroke: { base: '#9ca3af', _dark: '#6b7280' }, })} /> <polygon data-element="edge-arrow" data-arrow-side="right" points={`${edgeEndX - 8},${centerY - 4} ${edgeEndX - 8},${centerY + 4} ${edgeEndX},${centerY}`} className={css({ fill: { base: '#9ca3af', _dark: '#6b7280' }, })} /> {option.pathLabel && ( <text data-element="edge-label" data-label-text={option.pathLabel} x={(edgeStartX + edgeEndX) / 2} y={centerY + LABEL_OFFSET_Y} textAnchor="middle" className={css({ fontSize: '11px', fontWeight: 'medium', fill: { base: '#6b7280', _dark: '#9ca3af' }, })} > {option.pathLabel} </text> )} </g> ) })} </g> {/* Layer 2: Diamond decision node (middle layer, on top of edges) */} <g data-element="diamond-group" transform={`translate(${centerX}, ${centerY})`}> <rect data-element="diamond-shape" x={-diamondHalf} y={-diamondHalf} width={diamondSize} height={diamondSize} rx={4} transform="rotate(45)" className={css({ fill: { base: '#dbeafe', _dark: '#1e3a5f' }, stroke: { base: '#3b82f6', _dark: '#60a5fa' }, strokeWidth: 2, })} /> {/* Title label inside diamond using foreignObject */} <foreignObject data-element="diamond-label-container" x={-diamondHalf * 0.7} y={-diamondHalf * 0.35} width={diamondSize * 0.7} height={diamondSize * 0.35} > <div data-element="diamond-label" data-node-title={nodeTitle} className={css({ width: '100%', height: '100%', display: 'flex', alignItems: 'center', justifyContent: 'center', fontSize: '12px', fontWeight: 'bold', color: { base: '#1e40af', _dark: '#93c5fd' }, textAlign: 'center', lineHeight: 'tight', whiteSpace: 'nowrap', overflow: 'hidden', textOverflow: 'ellipsis', })} > {displayLabel} </div> </foreignObject> </g> {/* Layer 3: Buttons (top layer, interactive) */} <g data-element="buttons-layer"> {/* Left side buttons */} {leftOptions.map((option, idx) => { const buttonX = getLeftButtonX(idx) const isCorrect = correctAnswer === option.value const isWrong = wrongAnswer === option.value return ( <foreignObject key={option.value} data-element="option-button-container" data-option-index={idx} data-option-value={option.value} x={buttonX} y={buttonY} width={BUTTON_WIDTH} height={BUTTON_HEIGHT} > <button data-testid={`decision-graph-option-${idx}`} data-element="option-button" data-option-value={option.value} data-option-label={option.label} data-is-correct={isCorrect} data-is-wrong={isWrong} data-side="left" onClick={() => !disabled && onSelect(option.value)} disabled={disabled} className={css({ width: '100%', height: '100%', borderRadius: 'lg', border: '2px solid', cursor: disabled ? 'not-allowed' : 'pointer', transition: 'all 0.15s', fontSize: 'sm', fontWeight: 'semibold', backgroundColor: isCorrect ? { base: '#dcfce7', _dark: '#166534' } : isWrong ? { base: '#fee2e2', _dark: '#991b1b' } : { base: 'white', _dark: '#374151' }, borderColor: isCorrect ? { base: '#22c55e', _dark: '#4ade80' } : isWrong ? { base: '#ef4444', _dark: '#f87171' } : { base: '#93c5fd', _dark: '#3b82f6' }, color: isCorrect ? { base: '#166534', _dark: '#bbf7d0' } : isWrong ? { base: '#991b1b', _dark: '#fecaca' } : { base: '#1f2937', _dark: '#e5e7eb' }, _hover: disabled ? {} : { borderColor: { base: '#3b82f6', _dark: '#60a5fa' }, transform: 'scale(1.02)', }, })} > {isCorrect && '✓ '} {isWrong && '✗ '} {option.label} </button> </foreignObject> ) })} {/* Right side buttons */} {rightOptions.map((option, idx) => { const actualIdx = leftOptions.length + idx const buttonX = getRightButtonX(idx) const isCorrect = correctAnswer === option.value const isWrong = wrongAnswer === option.value return ( <foreignObject key={option.value} data-element="option-button-container" data-option-index={actualIdx} data-option-value={option.value} x={buttonX} y={buttonY} width={BUTTON_WIDTH} height={BUTTON_HEIGHT} > <button data-testid={`decision-graph-option-${actualIdx}`} data-element="option-button" data-option-value={option.value} data-option-label={option.label} data-is-correct={isCorrect} data-is-wrong={isWrong} data-side="right" onClick={() => !disabled && onSelect(option.value)} disabled={disabled} className={css({ width: '100%', height: '100%', borderRadius: 'lg', border: '2px solid', cursor: disabled ? 'not-allowed' : 'pointer', transition: 'all 0.15s', fontSize: 'sm', fontWeight: 'semibold', backgroundColor: isCorrect ? { base: '#dcfce7', _dark: '#166534' } : isWrong ? { base: '#fee2e2', _dark: '#991b1b' } : { base: 'white', _dark: '#374151' }, borderColor: isCorrect ? { base: '#22c55e', _dark: '#4ade80' } : isWrong ? { base: '#ef4444', _dark: '#f87171' } : { base: '#93c5fd', _dark: '#3b82f6' }, color: isCorrect ? { base: '#166534', _dark: '#bbf7d0' } : isWrong ? { base: '#991b1b', _dark: '#fecaca' } : { base: '#1f2937', _dark: '#e5e7eb' }, _hover: disabled ? {} : { borderColor: { base: '#3b82f6', _dark: '#60a5fa' }, transform: 'scale(1.02)', }, })} > {isCorrect && '✓ '} {isWrong && '✗ '} {option.label} </button> </foreignObject> ) })} </g> </svg> {/* Shake animation styles */} <style dangerouslySetInnerHTML={{ __html: ` @keyframes shake { 0%, 100% { transform: translateX(0); } 10%, 30%, 50%, 70%, 90% { transform: translateX(-8px); } 20%, 40%, 60%, 80% { transform: translateX(8px); } } .shake-animation { animation: shake 0.5s ease-in-out; } `, }} /> </div> ) } |