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class Workout {
date = new Date()
id = Date.now().toString().slice(-10)
clicks = 0
constructor(coords, distance, duration) {
this.coords = coords // [lat, lng]
this.distance = distance
this.duration = duration
}
_setDescription() {
const months = [
'January',
'February',
'March',
'April',
'May',
'June',
'July',
'August',
'September',
'October',
'November',
'December',
]
this.description = `${this.type[0].toUpperCase()}${this.type.slice(1)} on ${
months[this.date.getMonth()]
} ${this.date.getDate()}`
}
click(){
this.click++
}
}
class Running extends Workout {
type = 'running'
constructor(coords, distance, duration, cadence) {
super(coords, distance, duration)
this.cadence = cadence
this.type = 'running'
this.calcPace()
this._setDescription()
}
calcPace() {
// min/km
this.pace = this.duration / this.distance
return this.pace
}
}
class Cycling extends Workout {
type = 'cycling'
constructor(coords, distance, duration, elevationGain) {
super(coords, distance, duration)
this.elevationGain = elevationGain
this.type = 'cycling'
this.calcSpeed()
this._setDescription()
}
calcSpeed() {
// km/h
this.speed = this.distance / (this.duration / 60)
return this.speed
}
}
const run1 = new Running([39, -12], 5.2, 24, 178)
const cyc1 = new Running([39, -12], 5.2, 24, 178)
// console.log(run1, cyc1)
class App {
#map
#mapZoomLevel, = 13
#mapEvent
#workouts = []
constructor() {
// global var變成私有property
this._getPosition()
// get data from localStorage
this._getLocalStorage()
// event listener的this會指向監聽的form本身，需要綁定成app本身
form.addEventListener('submit', this._newWorkOut.bind(this))
// 樣式變更沒有跟事件處理有關，所以不用擔心this指向
inputType.addEventListener('change', this._toggleElevationField)
containerWorkouts.addEventListener('click', this._moveToPopup.bind(this))
}
_getPosition() {
if (navigator.geolocation) {
// 綁定this 才不會因為一般函式呼叫而讓this變成undefined
navigator.geolocation.getCurrentPosition(
this._loadMap.bind(this),
function () {
alert('could not get your position')
}
)
}
}
_loadMap(position) {
const { latitude, longitude } = position.coords
// console.log(`https://www.google.com/maps/@${latitude},${longitude}`)
const coords = [latitude, longitude]
this.#map = L.map('map').setView(coords, this.#mapZoomLevel,)
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution:
'© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
}).addTo(this.#map)
// this會變成event handler監聽的對象也就是map
this.#map.on('click', this._showForm.bind(this))
this.#workouts.forEach(work => {
this._renderWorkoutMarker(work)
})
}
_showForm() {
this.#mapEvent = mapE
form.classList.remove('hidden')
// 選取距離的表單元素
inputDistance.focus()
const { lat, lng } = mapE.latlng
}
_hideForm() {
inputDistance.value = inputDuration.value = inputCadence = inputElevation.value = ''
form.style.display = 'none'
form.classList.add('hidden')
setTimeout(() => form.style.display = 'grid', 1000)
}
_toggleElevationField() {
inputElevation.closet('.form__row').classList.toggle('form__row--hidden')
inputCadence.closet('.form__row').classList.toggle('form__row--hidden')
}
_newWorkout(e) {
// rest parameter
const validInputs = (...inputs) =>
inputs.every((input) => Number.isFinite(input))
const allPositive = (...inputs) => inputs.every((input) => input > 0)
e.preventDefault()
// get data from form
const type = inputType.value
const distance = Number(inputDistance.value)
const duration = Number(inputDuration.value)
const { lat, lng } = this.#mapEvent.latlng
let workout
// if running, create running obj
if (type === 'running') {
const cadence = Number(inputCadence.value)
if (
!validInputs(distance, duration, cadence) ||
!allPositive(distance, duration, cadence)
)
return alert('input is not a positive number')
workout = new Running([lat, lng], distance, duration, cadence)
}
// if cycling, create cycling obj
if (type === 'cycling') {
const elevation = Number(inputElevation.value)
if (
!validInputs(distance, duration, elevation) ||
!allPositive(distance, duration)
)
return alert('input is not a positive number')
workout = new Cycling([lat, lng], distance, duration, elevation)
}
// add new obj to new array
this.#workouts.push(workout)
// render on map as marker
this._renderWorkoutMarker(workout)
// hide forms, clear input fields
this._renderWorkout(workout)
// clear input fields
this._hideForm()
// set data to localStorage
this._setLocalStorage()
}
// 為了加入類型的參數 而放到外層
_renderWorkoutMarker(workout) {
L.marker(workout.coords)
.addTo(this.#map)
.bindPopup(
L.popup({
maxWidth: 250,
minWidth: 100,
autoClose: false,
closeOnClick: false,
className: `${workout.type}-popup`,
})
)
.setPopupContent(`${workout.type === 'running' ? '🏃♂️' : '🚴♀️'} ${workout.description}`)
.openPopup()
}
_renderWorkout(workout) {
let html = `
<li class="workout workout--${workout.name}" data-id="${workout.id}">
<h2 class="workout__title">${workout.description}</h2>
<div class="workout__details">
<span class="workout__icon">${
workout.type === 'running' ? '🏃♂️' : '🚴♀️'
}</span>
<span class="workout__value">${workout.distance}</span>
<span class="workout__unit">km</span>
</div>
<div class="workout__details">
<span class="workout__icon">⏱</span>
<span class="workout__value">${workout.duration}</span>
<span class="workout__unit">min</span>
</div>
`
if (workout.type === 'running') {
html += `
<div class="workout__details">
<span class="workout__icon">⚡️</span>
<span class="workout__value">${workout.pace.toFixed(1)}</span>
<span class="workout__unit">min/km</span>
</div>
<div class="workout__details">
<span class="workout__icon">🦶🏼</span>
<span class="workout__value">${workout.cadence}</span>
<span class="workout__unit">spm</span>
</div>
</li>
`
}
if (workout.type === 'cycling')
html += `
<div class="workout__details">
<span class="workout__icon">⚡️</span>
<span class="workout__value">${workout.speed.toFixed(1)}</span>
<span class="workout__unit">km/h</span>
</div>
<div class="workout__details">
<span class="workout__icon">⛰</span>
<span class="workout__value">${workout.elevationGain}</span>
<span class="workout__unit">m</span>
</div>
</li>
`
form.insertAdjacentHTML('afterend', html)
}
_moveToPopup(e) {
// catch id
const workoutElement = e.target.closet('.workout')
// console.log(workoutElement)
if(!workoutElement) return
const workout = this.#workouts.find(work => work.id === workoutElement.dataset.id)
this.#map.setView(workout.coords, this.#mapZoomLevel, {
animate: true,
pan: {
duration: 1
}
})
// using the public interface
// workout.clicks()
}
_setLocalStorage() {
// 字串化會失去prototype chain跟方法
localStorage.setItem('workouts', JSON.stringify(this.#workouts))
}
_getLocalStorage(){
const data = JSON.parse(localStorage.getItem('workouts'))
if(!data) return
this.#workouts = data
this.#workouts.forEach(work => {
this._renderWorkout(work)
})
}
// 公開方法 刪除localStorage資料
reset(){
localStorage.removeItem('workouts')
location.reload()
}
}
const app = new App()
|
