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* StanceWheelPure Component - Pure DOM version (no Three.js/drei dependency)
*
* Circular 8-segment stance selector for mobile touch controls
* Provides visual and tactile stance switching interface
*
* This is a pure DOM version that renders OUTSIDE the Three.js Canvas.
* It does NOT use Html from @react-three/drei, making it compatible with
* rendering outside Canvas contexts.
*
* WCAG 2.1 Level AA Compliance:
* - ARIA labels for all 8 stance buttons
* - Keyboard navigation (Tab, Enter, Arrow keys)
* - Visible focus indicators (2px cyan border)
* - aria-expanded state for wheel toggle
* - role="radiogroup" for stance selection
* - 50x50px touch targets (exceeds 44x44px minimum)
*
* @module components/mobile/StanceWheelPure
* @category Mobile Controls
* @korean 자세 휠 (순수 DOM)
*/
import React, { useCallback, useState } from "react";
import { KOREAN_COLORS } from "@/types/constants";
import { TRIGRAM_STANCES_ORDER } from "../../../systems/trigram/types";
import { TrigramStance } from "../../../types/common";
import { triggerHaptic } from "../../../utils/haptics";
import { getColorRGB } from "../../../utils/colorHelpers";
import {
handleKeyboardNav,
getFocusStyle,
announceToScreenReader,
} from "../../../utils/accessibility";
import { createBilingualLabel } from "../../../types/AccessibilityTypes";
/**
* Props for StanceWheelPure component
*/
export interface StanceWheelPureProps {
/** Current stance index (0-7) */
readonly currentStance: number;
/** Callback when stance changes */
readonly onStanceChange: (stanceIndex: number) => void;
/** Whether wheel is expanded */
readonly expanded: boolean;
/** Callback to toggle expansion */
readonly onToggle: () => void;
/** Whether wheel is disabled */
readonly disabled?: boolean;
/** Position from bottom in pixels (default: 34 when collapsed, 100 when expanded for safe area) */
readonly bottom?: number;
/** Opacity of wheel (default: 0.8) */
readonly opacity?: number;
}
/**
* Trigram symbols for each stance
*/
const TRIGRAM_SYMBOLS = [
"☰",
"☱",
"☲",
"☳",
"☴",
"☵",
"☶",
"☷",
] as const;
/**
* Korean names for each stance
*/
const STANCE_KOREAN_NAMES = [
"건", // Geon - Heaven
"태", // Tae - Lake
"리", // Li - Fire
"진", // Jin - Thunder
"손", // Son - Wind
"감", // Gam - Water
"간", // Gan - Mountain
"곤", // Gon - Earth
] as const;
/**
* Get color for a specific stance
*/
const getStanceColor = (stance: TrigramStance): number => {
const stanceColors: Record<TrigramStance, number> = {
geon: 0xffd700, // Gold - Heaven
tae: 0x00ffff, // Cyan - Lake
li: 0xff4444, // Red - Fire
jin: 0xffaa00, // Orange - Thunder
son: 0x88ff88, // Light Green - Wind
gam: 0x0088ff, // Blue - Water
gan: 0x8844ff, // Purple - Mountain
gon: 0xaa6644, // Brown - Earth
};
return stanceColors[stance] ?? KOREAN_COLORS.PRIMARY_CYAN;
};
/**
* StanceWheelPure Component
*
* Pure DOM circular stance selector with 8 segments for trigram stances
* Features:
* - Expandable/collapsible interface
* - Visual stance indicator when collapsed (60x60px)
* - 8 touch-optimized stance buttons when expanded (50x50px each)
* - 200px wheel diameter with safe positioning
* - Korean trigram symbols and names
* - Color-coded by stance element
* - Haptic feedback on selection
* - 50x50px minimum touch targets
*
* Usage in Combat:
* - Tap collapsed indicator to expand wheel
* - Select from 8 trigram stances
* - Current stance highlighted with gold accent
* - Tap current stance to collapse wheel
*
* @example
* ```tsx
* <StanceWheelPure
* currentStance={player.stance}
* onStanceChange={(index) => handleStanceChange(index)}
* expanded={wheelExpanded}
* onToggle={() => setWheelExpanded(!wheelExpanded)}
* disabled={isPaused}
* />
* ```
*
* @public
* @korean 자세휠순수
*/
export const StanceWheelPure: React.FC<StanceWheelPureProps> = ({
currentStance,
onStanceChange,
expanded,
onToggle,
disabled = false,
bottom,
opacity = 0.8,
}) => {
const [hoveredStance, setHoveredStance] = useState<number | null>(null);
const [focusedStance, setFocusedStance] = useState<number | null>(null);
/**
* Handle stance selection (touch or mouse)
*/
const handleStanceSelect = useCallback(
(e: React.TouchEvent | React.MouseEvent, stanceIndex: number) => {
if (disabled) return;
e.preventDefault();
e.stopPropagation();
// Don't allow selecting the same stance
if (stanceIndex === currentStance) {
// Collapse wheel if tapping current stance
onToggle();
triggerHaptic("light");
return;
}
onStanceChange(stanceIndex);
triggerHaptic("medium");
// Announce stance change to screen readers
const stanceName = STANCE_KOREAN_NAMES[stanceIndex];
const stanceSymbol = TRIGRAM_SYMBOLS[stanceIndex];
announceToScreenReader({
message: createBilingualLabel(
`자세 변경: ${stanceName} ${stanceSymbol}`,
`Stance changed to ${TRIGRAM_STANCES_ORDER[stanceIndex]}`,
).label,
politeness: "polite",
});
// Auto-collapse after selection (optional)
// onToggle();
},
[disabled, currentStance, onStanceChange, onToggle],
);
/**
* Handle wheel toggle (touch or mouse)
*/
const handleToggle = useCallback(
(e: React.TouchEvent | React.MouseEvent) => {
if (disabled) return;
e.preventDefault();
e.stopPropagation();
onToggle();
triggerHaptic("light");
// Announce state change to screen readers using the toggled value
const nextExpanded = !expanded;
announceToScreenReader({
message: createBilingualLabel(
nextExpanded ? "자세 휠 열림" : "자세 휠 닫힘",
nextExpanded ? "Stance wheel opened" : "Stance wheel closed",
).label,
politeness: "polite",
});
},
[disabled, onToggle, expanded],
);
/**
* Handle keyboard navigation for stance buttons
*/
const handleStanceKeyDown = useCallback(
(stanceIndex: number) => (e: React.KeyboardEvent) => {
if (disabled) return;
handleKeyboardNav(e.nativeEvent, {
onActivate: () => {
if (stanceIndex === currentStance) {
onToggle();
} else {
onStanceChange(stanceIndex);
}
triggerHaptic("medium");
},
onCancel: () => {
onToggle();
},
onNavigate: (direction) => {
// Navigate between stances with arrow keys
let newIndex = stanceIndex;
if (direction === "left" || direction === "up") {
newIndex = (stanceIndex - 1 + 8) % 8;
} else if (direction === "right" || direction === "down") {
newIndex = (stanceIndex + 1) % 8;
}
setFocusedStance(newIndex);
// Focus the new stance button on the next animation frame
requestAnimationFrame(() => {
const button = document.querySelector(
`[data-testid="stance-button-pure-${newIndex}"]`,
) as HTMLElement | null;
button?.focus();
});
},
});
},
[disabled, currentStance, onStanceChange, onToggle],
);
/**
* Handle keyboard navigation for toggle button
*/
const handleToggleKeyDown = useCallback(
(e: React.KeyboardEvent) => {
if (disabled) return;
handleKeyboardNav(e.nativeEvent, {
onActivate: () => {
onToggle();
triggerHaptic("light");
},
});
},
[disabled, onToggle],
);
// Dynamic bottom position with safe area consideration
const dynamicBottom = bottom ?? (expanded ? 100 : 34);
// Get RGB values for colors using shared utility
const currentStanceColor = getColorRGB(
getStanceColor(TRIGRAM_STANCES_ORDER[currentStance]),
);
const goldColor = getColorRGB(KOREAN_COLORS.ACCENT_GOLD);
const primaryColor = getColorRGB(KOREAN_COLORS.PRIMARY_CYAN);
Iif (expanded) {
// Expanded: Show full 8-segment wheel
const wheelSize = 200;
const segmentAngle = 360 / 8;
return (
<div
style={{
position: "absolute", // Changed from fixed to position relative to container
bottom: `${dynamicBottom}px`,
left: "50%",
transform: "translateX(-50%)",
opacity: disabled ? 0.3 : opacity,
pointerEvents: disabled ? "none" : "auto",
transition: "all 0.3s ease",
zIndex: 1000,
}}
data-testid="stance-wheel-pure-expanded"
role="radiogroup"
aria-label={
createBilingualLabel(
"팔괘 자세 선택",
"Eight Trigram Stance Selection",
).label
}
aria-activedescendant={`stance-button-pure-${currentStance}`}
>
<div
style={{
width: `${wheelSize}px`,
height: `${wheelSize}px`,
position: "relative",
}}
>
{/* Stance buttons arranged in circle */}
{TRIGRAM_STANCES_ORDER.map((stance, index) => {
const angle = index * segmentAngle;
const radian = (angle - 90) * (Math.PI / 180); // -90 to start from top
const x = Math.cos(radian) * 80 + 100;
const y = Math.sin(radian) * 80 + 100;
const isActive = index === currentStance;
const isHovered = index === hoveredStance;
const stanceColor = getColorRGB(getStanceColor(stance));
return (
<button
key={stance}
onTouchStart={(e) => handleStanceSelect(e, index)}
onTouchEnd={(e) => {
e.preventDefault();
e.stopPropagation();
setHoveredStance(null);
}}
onMouseDown={(e) => handleStanceSelect(e, index)}
onMouseEnter={() => setHoveredStance(index)}
onMouseLeave={() => setHoveredStance(null)}
onKeyDown={handleStanceKeyDown(index)}
onFocus={() => setFocusedStance(index)}
onBlur={() => setFocusedStance(null)}
style={{
position: "absolute",
left: `${x - 25}px`,
top: `${y - 25}px`,
width: "50px",
height: "50px",
borderRadius: "50%",
background: isActive
? `rgba(${goldColor.r}, ${goldColor.g}, ${goldColor.b}, 0.95)`
: `rgba(${stanceColor.r}, ${stanceColor.g}, ${stanceColor.b}, 0.8)`,
border: `3px solid ${isActive ? "#fff" : `rgba(${stanceColor.r}, ${stanceColor.g}, ${stanceColor.b}, 1)`}`,
fontSize: "24px",
color: isActive ? "#000" : "#fff",
fontWeight: "bold",
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "center",
cursor: "pointer",
userSelect: "none",
touchAction: "none",
transition: "all 0.2s ease",
transform: isActive || isHovered ? "scale(1.15)" : "scale(1)",
boxShadow: isActive
? `0 0 25px rgba(${goldColor.r}, ${goldColor.g}, ${goldColor.b}, 0.9)`
: isHovered
? `0 0 15px rgba(${stanceColor.r}, ${stanceColor.g}, ${stanceColor.b}, 0.8)`
: `0 4px 10px rgba(0, 0, 0, 0.5)`,
...getFocusStyle(focusedStance === index, {
boxShadow: `0 0 0 4px rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, 0.5), 0 0 25px rgba(${goldColor.r}, ${goldColor.g}, ${goldColor.b}, 0.9)`,
outlineColor: KOREAN_COLORS.PRIMARY_CYAN,
outlineWidth: 3,
}),
}}
aria-label={
createBilingualLabel(
`${STANCE_KOREAN_NAMES[index]} ${TRIGRAM_SYMBOLS[index]}`,
`${stance} stance`,
).label
}
aria-checked={isActive}
role="radio"
tabIndex={0}
disabled={disabled}
id={`stance-button-pure-${index}`}
data-testid={`stance-button-pure-${index}`}
>
<div style={{ fontSize: "20px", lineHeight: 1 }}>
{TRIGRAM_SYMBOLS[index]}
</div>
<div style={{ fontSize: "8px", marginTop: "2px" }}>
{STANCE_KOREAN_NAMES[index]}
</div>
</button>
);
})}
{/* Center label */}
<div
style={{
position: "absolute",
top: "50%",
left: "50%",
transform: "translate(-50%, -50%)",
fontSize: "12px",
color: `rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, 0.9)`,
textShadow: "0 1px 3px rgba(0, 0, 0, 0.8)",
fontWeight: "bold",
textAlign: "center",
pointerEvents: "none",
}}
>
자세 선택
<br />
<span style={{ fontSize: "10px" }}>Stance</span>
</div>
</div>
</div>
);
}
// Collapsed: Show current stance indicator
return (
<div
style={{
position: "absolute", // Changed from fixed to position relative to container
bottom: `${dynamicBottom}px`,
left: "50%",
transform: "translateX(-50%)",
opacity: disabled ? 0.3 : opacity,
pointerEvents: disabled ? "none" : "auto",
transition: "all 0.3s ease",
zIndex: 1000,
}}
data-testid="stance-wheel-pure-collapsed"
>
<button
onTouchStart={handleToggle}
onMouseDown={handleToggle}
onKeyDown={handleToggleKeyDown}
onFocus={() => setFocusedStance(currentStance)}
onBlur={() => setFocusedStance(null)}
style={{
width: "60px",
height: "60px",
borderRadius: "50%",
background: `rgba(${currentStanceColor.r}, ${currentStanceColor.g}, ${currentStanceColor.b}, 0.9)`,
border: `3px solid rgba(${goldColor.r}, ${goldColor.g}, ${goldColor.b}, 0.9)`,
fontSize: "28px",
color: "#fff",
fontWeight: "bold",
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "center",
cursor: "pointer",
userSelect: "none",
touchAction: "none",
transition: "all 0.2s ease",
boxShadow: `0 4px 15px rgba(0, 0, 0, 0.6), 0 0 20px rgba(${currentStanceColor.r}, ${currentStanceColor.g}, ${currentStanceColor.b}, 0.6)`,
...getFocusStyle(focusedStance === currentStance, {
boxShadow: `0 0 0 4px rgba(${primaryColor.r}, ${primaryColor.g}, ${primaryColor.b}, 0.5), 0 4px 15px rgba(0, 0, 0, 0.6), 0 0 20px rgba(${currentStanceColor.r}, ${currentStanceColor.g}, ${currentStanceColor.b}, 0.6)`,
outlineColor: KOREAN_COLORS.PRIMARY_CYAN,
outlineWidth: 3,
}),
}}
disabled={disabled}
aria-label={
createBilingualLabel(
`현재 자세: ${STANCE_KOREAN_NAMES[currentStance]} ${TRIGRAM_SYMBOLS[currentStance]}. 자세 휠 열기`,
`Current stance: ${TRIGRAM_STANCES_ORDER[currentStance]}. Open stance wheel`,
).label
}
aria-expanded={expanded}
aria-haspopup="menu"
role="button"
tabIndex={disabled ? -1 : 0}
data-testid="stance-wheel-pure-toggle"
>
<div style={{ fontSize: "24px", lineHeight: 1 }}>
{TRIGRAM_SYMBOLS[currentStance]}
</div>
<div style={{ fontSize: "10px", marginTop: "2px" }}>
{STANCE_KOREAN_NAMES[currentStance]}
</div>
</button>
</div>
);
};
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