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 | 2x 2x 2x 3x 3x 3x 4x 5x 1x 4x 4x 1x 3x 3x 3x 8x 15x 8x 7x 7x 3x 3x 1x 4x 7x 2x 1x 2x 62x 11x 9x 9x 1x | export default class WaterfallTips {
/**
* @constructor
* @param {*} indexes - Indexes to create
*/
constructor(indexes = [], options = {}) {
this._index = null
this.indexes = {}
this.options = options
indexes.forEach(index => this.createIndex(index))
}
/**
* Start the waterfall tips by the first position
*/
start() {
this.index = this.getIndexByPosition(0)
return this.index && this.index.name
}
/**
* Check if an alement must be visible or not
* @param {String|Object} index - The index
* @returns {Boolean} Is visible or not
*/
isVisible(index = '') {
return this.index ? index === this.index.name : false
}
/**
* Create a new index
* @param {String} name - The name of the index
* @returns {*} The index object
*/
createIndex(name) {
if (!name) {
throw new Error(`WaterfallTips.createIndex must have a name parameter. Found: "${name}"`)
}
const key = name.replace(/[^a-zA-Z]/g, '')
if (this.indexes[key]) {
throw new Error(`WaterfallTips index must be unique. Found duplicate key: "${key} (${name})"`)
}
const index = {
name: key,
position: Object.keys(this.indexes).length
}
this.indexes[key] = index
return key
}
/**
* Get the index by its position
* @param {Number} position - The position of the index
* @returns {*} The index object
*/
getIndexByPosition(position) {
const key = Object.keys(this.indexes)
.find(k => this.indexes[k].position === position)
return this.indexes[key]
}
/* METHODS */
/**
* Trigger the next tips
*/
next() {
const isFinished = this.index && this.index.position + 1 >= Object.keys(this.indexes).length
if (!this.index || isFinished) {
this.index = null
if (this.options.onEnd) {
this.options.onEnd()
}
} else {
this.index = this.getIndexByPosition(this.index.position + 1)
}
return this.index && this.index.name
}
/**
* Trigger the previous tips
*/
previous() {
if (this.index && this.index.position > 0) {
this.index = this.getIndexByPosition(this.index.position - 1)
}
return this.index && this.index.name
}
/* ACCESSORS */
/**
* Get the current index
* @returns {Object}
*/
get index() {
return this.options.disabled ? null : this._index
}
/**
* Set the new index
* @returns {Object}
*/
set index(index) {
if (index !== this._index) {
this._index = index
if (this.options.onIndexChange) {
this.options.onIndexChange(index && index.name)
}
}
}
}
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