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import { select } from "d3-selection"
import { getRelativeMouse, isMobile, debounce } from "../../clientUtils/Util"
import { Bounds } from "../../clientUtils/Bounds"
import { observable, computed, action } from "mobx"
import { observer } from "mobx-react"
import { faPlay } from "@fortawesome/free-solid-svg-icons/faPlay"
import { faPause } from "@fortawesome/free-solid-svg-icons/faPause"
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
import Tippy from "@tippyjs/react"
import classNames from "classnames"
import { TimelineController, TimelineManager } from "./TimelineController"
import { timeFromTimebounds } from "../../clientUtils/TimeBounds"
const HANDLE_TOOLTIP_FADE_TIME_MS = 2000
@observer
export class TimelineComponent extends React.Component<{
timelineController: TimelineController
}> {
base: React.RefObject<HTMLDivElement> = React.createRef()
@observable private dragTarget?: "start" | "end" | "both"
@computed private get isDragging(): boolean {
return !!this.dragTarget
}
@computed private get manager(): TimelineManager {
return this.props.timelineController.manager
}
@computed private get controller(): TimelineController {
return this.props.timelineController
}
private get sliderBounds(): Bounds {
return this.slider
? Bounds.fromRect(this.slider.getBoundingClientRect())
: new Bounds(0, 0, 100, 100)
}
private slider?: Element | HTMLElement | null
private playButton?: Element | HTMLElement | null
private getInputTimeFromMouse(
event: MouseEvent | TouchEvent
): number | undefined {
const { minTime, maxTime } = this.controller
if (!this.slider) return
const mouseX = getRelativeMouse(this.slider, event).x
const fracWidth = mouseX / this.sliderBounds.width
return minTime + fracWidth * (maxTime - minTime)
}
@action.bound private onDrag(inputTime: number): void {
if (!this.manager.isPlaying) this.manager.userHasSetTimeline = true
this.dragTarget = this.controller.dragHandleToTime(
this.dragTarget!,
inputTime
)
this.showTooltips()
}
@action.bound private showTooltips(): void {
this.hideStartTooltip.cancel()
this.hideEndTooltip.cancel()
this.startTooltipVisible = true
this.endTooltipVisible = true
if (this.dragTarget === "start") this.lastUpdatedTooltip = "startMarker"
if (this.dragTarget === "end") this.lastUpdatedTooltip = "endMarker"
if (this.manager.startHandleTimeBound > this.manager.endHandleTimeBound)
this.lastUpdatedTooltip =
this.lastUpdatedTooltip === "startMarker"
? "endMarker"
: "startMarker"
}
private getDragTarget(
inputTime: number,
isStartMarker: boolean,
isEndMarker: boolean
): "both" | "start" | "end" {
const { startHandleTimeBound, endHandleTimeBound } = this.manager
if (
startHandleTimeBound === endHandleTimeBound &&
(isStartMarker || isEndMarker)
)
return "both"
else if (isStartMarker || inputTime <= startHandleTimeBound)
return "start"
else if (isEndMarker || inputTime >= endHandleTimeBound) return "end"
return "both"
}
@action.bound private onMouseDown(event: any): void {
const logic = this.controller
const targetEl = select(event.target)
const inputTime = this.getInputTimeFromMouse(event)
if (!inputTime) return
this.dragTarget = this.getDragTarget(
inputTime,
targetEl.classed("startMarker"),
targetEl.classed("endMarker")
)
if (this.dragTarget === "both") logic.setDragOffsets(inputTime)
this.onDrag(inputTime)
event.preventDefault()
}
private queuedDrag?: boolean
@action.bound private onMouseMove(event: MouseEvent | TouchEvent): void {
const { dragTarget } = this
if (!dragTarget) return
if (this.queuedDrag) return
this.queuedDrag = true
const inputTime = this.getInputTimeFromMouse(event)
if (inputTime) this.onDrag(inputTime)
this.queuedDrag = false
}
@action.bound private onMouseUp(): void {
this.dragTarget = undefined
if (this.manager.isPlaying) return
if (isMobile()) {
if (this.startTooltipVisible) this.hideStartTooltip()
if (this.endTooltipVisible) this.hideEndTooltip()
} else if (!this.mouseHoveringOverTimeline) {
this.startTooltipVisible = false
this.endTooltipVisible = false
}
}
private mouseHoveringOverTimeline: boolean = false
@action.bound private onMouseOver(): void {
this.mouseHoveringOverTimeline = true
this.hideStartTooltip.cancel()
this.startTooltipVisible = true
this.hideEndTooltip.cancel()
this.endTooltipVisible = true
}
@action.bound private onMouseLeave(): void {
if (!this.manager.isPlaying && !this.isDragging) {
this.startTooltipVisible = false
this.endTooltipVisible = false
}
this.mouseHoveringOverTimeline = false
}
private hideStartTooltip = debounce(() => {
this.startTooltipVisible = false
}, HANDLE_TOOLTIP_FADE_TIME_MS)
private hideEndTooltip = debounce(() => {
this.endTooltipVisible = false
}, HANDLE_TOOLTIP_FADE_TIME_MS)
@action.bound onPlayTouchEnd(evt: Event): void {
evt.preventDefault()
evt.stopPropagation()
this.controller.togglePlay()
}
@computed private get isPlayingOrDragging(): boolean {
return this.manager.isPlaying || this.isDragging
}
componentDidMount(): void {
const current = this.base.current
if (current) {
this.slider = current.querySelector(".slider")
this.playButton = current.querySelector(".play")
}
document.documentElement.addEventListener("mouseup", this.onMouseUp)
document.documentElement.addEventListener("mouseleave", this.onMouseUp)
document.documentElement.addEventListener("mousemove", this.onMouseMove)
document.documentElement.addEventListener("touchend", this.onMouseUp)
document.documentElement.addEventListener("touchmove", this.onMouseMove)
this.slider?.addEventListener("touchstart", this.onMouseDown, {
passive: false,
})
this.playButton?.addEventListener("touchend", this.onPlayTouchEnd, {
passive: false,
})
}
componentWillUnmount(): void {
document.documentElement.removeEventListener("mouseup", this.onMouseUp)
document.documentElement.removeEventListener(
"mouseleave",
this.onMouseUp
)
document.documentElement.removeEventListener(
"mousemove",
this.onMouseMove
)
document.documentElement.removeEventListener("touchend", this.onMouseUp)
document.documentElement.removeEventListener(
"touchmove",
this.onMouseMove
)
this.slider?.removeEventListener("touchstart", this.onMouseDown, {
passive: false,
} as EventListenerOptions)
this.playButton?.removeEventListener("touchend", this.onPlayTouchEnd, {
passive: false,
} as EventListenerOptions)
}
private formatTime(time: number): string {
return this.manager.formatTimeFn
? this.manager.formatTimeFn(time)
: time.toString()
}
private timelineEdgeMarker(markerType: "start" | "end"): JSX.Element {
const { controller } = this
const time =
markerType === "start" ? controller.minTime : controller.maxTime
return (
<div
className="date clickable"
onClick={(): void =>
markerType === "start"
? controller.resetStartToMin()
: controller.resetEndToMax()
}
>
{this.formatTime(time)}
</div>
)
}
@observable private startTooltipVisible: boolean = false
@observable private endTooltipVisible: boolean = false
@observable private lastUpdatedTooltip?: "startMarker" | "endMarker"
@action.bound private togglePlay(): void {
this.controller.togglePlay()
}
convertToTime(time: number): number {
if (time === -Infinity) return this.controller.minTime
if (time === +Infinity) return this.controller.maxTime
return time
}
render(): JSX.Element {
const { manager, controller } = this
const { startTimeProgress, endTimeProgress, minTime, maxTime } =
controller
const { startHandleTimeBound, endHandleTimeBound } = manager
const formattedStartTime = this.formatTime(
timeFromTimebounds(startHandleTimeBound, minTime)
)
const formattedEndTime = this.formatTime(
timeFromTimebounds(endHandleTimeBound, maxTime)
)
return (
<div
ref={this.base}
className="TimelineComponent"
onMouseOver={this.onMouseOver}
onMouseLeave={this.onMouseLeave}
>
{!this.manager.disablePlay && (
<div
onMouseDown={(e) => e.stopPropagation()}
onClick={this.togglePlay}
className="play"
>
{manager.isPlaying ? (
<FontAwesomeIcon icon={faPause} />
) : (
<FontAwesomeIcon icon={faPlay} />
)}
</div>
)}
{this.timelineEdgeMarker("start")}
<div
className="slider clickable"
onMouseDown={this.onMouseDown}
>
<TimelineHandle
type="startMarker"
offsetPercent={startTimeProgress * 100}
tooltipContent={formattedStartTime}
tooltipVisible={this.startTooltipVisible}
tooltipZIndex={
this.lastUpdatedTooltip === "startMarker" ? 2 : 1
}
/>
<div
className="interval"
style={{
left: `${startTimeProgress * 100}%`,
right: `${100 - endTimeProgress * 100}%`,
}}
/>
<TimelineHandle
type="endMarker"
offsetPercent={endTimeProgress * 100}
tooltipContent={formattedEndTime}
tooltipVisible={this.endTooltipVisible}
tooltipZIndex={
this.lastUpdatedTooltip === "endMarker" ? 2 : 1
}
/>
</div>
{this.timelineEdgeMarker("end")}
</div>
)
}
}
const TimelineHandle = ({
type,
offsetPercent,
tooltipContent,
tooltipVisible,
tooltipZIndex,
}: {
type: "startMarker" | "endMarker"
offsetPercent: number
tooltipContent: string
tooltipVisible: boolean
tooltipZIndex: number
}) => {
return (
<div
className={classNames("handle", type)}
style={{
left: `${offsetPercent}%`,
}}
>
<Tippy
content={<span>{tooltipContent}</span>}
visible={tooltipVisible}
zIndex={tooltipZIndex}
>
<div className="icon" />
</Tippy>
</div>
)
}
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