| 76 | * Non-animatable strings are also supported. |
| 77 | */ |
| 78 | export class SpringValue<T = any> extends FrameValue<T> { |
| 79 | /** The property name used when `to` or `from` is an object. Useful when debugging too. */ |
| 80 | key?: string |
| 81 | |
| 82 | /** The animation state */ |
| 83 | animation = new Animation<T>() |
| 84 | |
| 85 | /** The queue of pending props */ |
| 86 | queue?: SpringUpdate<T>[] |
| 87 | |
| 88 | /** Some props have customizable default values */ |
| 89 | defaultProps: DefaultSpringProps<T> = {} |
| 90 | |
| 91 | /** The state for `runAsync` calls */ |
| 92 | protected _state: RunAsyncState<SpringValue<T>> = { |
| 93 | paused: false, |
| 94 | delayed: false, |
| 95 | pauseQueue: new Set(), |
| 96 | resumeQueue: new Set(), |
| 97 | timeouts: new Set(), |
| 98 | } |
| 99 | |
| 100 | /** The promise resolvers of pending `start` calls */ |
| 101 | protected _pendingCalls = new Set<AnimationResolver<this>>() |
| 102 | |
| 103 | /** The counter for tracking `scheduleProps` calls */ |
| 104 | protected _lastCallId = 0 |
| 105 | |
| 106 | /** The last `scheduleProps` call that changed the `to` prop */ |
| 107 | protected _lastToId = 0 |
| 108 | |
| 109 | protected _memoizedDuration = 0 |
| 110 | |
| 111 | constructor(from: Exclude<T, object>, props?: SpringUpdate<T>) |
| 112 | constructor(props?: SpringUpdate<T>) |
| 113 | constructor(arg1?: any, arg2?: any) { |
| 114 | super() |
| 115 | if (!is.und(arg1) || !is.und(arg2)) { |
| 116 | const props = is.obj(arg1) ? { ...arg1 } : { ...arg2, from: arg1 } |
| 117 | if (is.und(props.default)) { |
| 118 | props.default = true |
| 119 | } |
| 120 | this.start(props) |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | /** Equals true when not advancing on each frame. */ |
| 125 | get idle() { |
| 126 | return !(isAnimating(this) || this._state.asyncTo) || isPaused(this) |
| 127 | } |
| 128 | |
| 129 | get goal() { |
| 130 | return getFluidValue(this.animation.to) as T |
| 131 | } |
| 132 | |
| 133 | get velocity(): VelocityProp<T> { |
| 134 | const node = getAnimated(this)! |
| 135 | return ( |
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