// components/alphabet-order-list/alphabet-order-list.js
Component({
options: {
multipleSlots: true
},
properties: {
source: {
type: Array,
value: [],
observer: function (newVal, oldVal) {
this.setData({
dataSource: this._groupby(newVal)
})
}
},
groupKey: String,
imageKey: String,
imageStyle: String,
textKey: String,
textStyle: String,
tagStyle: String,
showPoundSign: {
type: Boolean,
value: false,
observer: function (newVal, oldVal) {
console.log(newVal)
console.log(oldVal)
var alphabet = this.data.alphabet
if (newVal) {
if (alphabet.length == 26) {
alphabet.push('PoundSign')
this.setData({
alphabet: alphabet
})
}
} else {
if (alphabet.length > 26) {
alphabet.splice(26, 1)
this.setData({
alphabet: alphabet
})
}
}
}
},
},
data: {
alphabet: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
startTouchAlphabet: false,
touchLetter: '',
letterHeight: 0,
dataSource: []
},
ready: function () {
if (wx.createSelectorQuery) {
var that = this
var query = wx.createSelectorQuery().in(this)
query.select('#alphabet').boundingClientRect(function (res) {
if (res.height) {
that.setData({
letterHeight: res.height / that.data.alphabet.length
})
} else {
throw ('Initialization failed.')
}
}).exec()
} else {
throw ('当前基础库版本小于1.6.0，不支持alphabet-order-list组件')
}
},
methods: {
_compare: function (key) {
return function (o, p) {
if (typeof o === "object" && typeof p === "object" && o && p) {
var a = o[key]
var b = p[key]
if (a == '' || a == null || a == undefined) {
a = String.fromCharCode(91)
} else if (a[0] >= 'a' && a[0] <= 'z') {
a = a.replace(a[0], String.fromCharCode(a[0].charCodeAt() - 32))
} else if (a[0] < 'A' || a[0] > 'Z') {
a = a.replace(a[0], String.fromCharCode(a[0].charCodeAt() + 91))
}
if (b == '' || b == null || b == undefined) {
b = String.fromCharCode(91)
} else if (b >= 'a' && b <= 'z') {
b = b.replace(b[0], String.fromCharCode(b[0].charCodeAt() - 32))
} else if (b[0] < 'A' || b[0] > 'Z') {
b = b.replace(b[0], String.fromCharCode(b[0].charCodeAt() + 91))
}
if (a === b) {
return 0
}
if (typeof a === typeof b) {
return a < b ? -1 : 1
}
return typeof a < typeof b ? -1 : 1
}
throw ("Error type.")
}
},
_sort: function (array, key) {
return array.sort(this._compare(key))
},
_groupby: function (array) {
if (!array || array.length == 0) {
return
}
var key = this.properties.groupKey
array = this._sort(array, key)
var tag = array[0][key][0]
if (tag >= 'a' && tag <= 'z') {
tag = String.fromCharCode(tag.charCodeAt() - 32)
}
var results = [{
'tag': tag >= 'A' && tag <= 'Z' ? tag : 'PoundSign',
'data': [array[0]]
}]
for (var i = 1, j = 0; i < array.length; i++) {
var tag = array[i][key][0]
if(tag >= 'a' && tag <= 'z') {
tag = String.fromCharCode(tag.charCodeAt() - 32)
}
if (tag >= 'A' && tag <= 'Z') {
if (tag == results[j]['tag']) {
results[j]['data'].push(array[i])
} else {
j++
results.push({
'tag': tag,
'data': [array[i]]
})
}
} else {
if (results[j]['tag'] != 'PoundSign') {
j++
results.push({
'tag': 'PoundSign',
'data': [array[i]]
})
} else {
results[j]['data'].push(array[i])
}
}
}
return results
},
_itemtap: function (e) {
this.triggerEvent('itemtap', { 'item': e.currentTarget.dataset.item }, {})
},
_letterTouchStartEvent: function (e) {
this.setData({
startTouchAlphabet: true,
touchLetter: this.data.alphabet[parseInt(e.changedTouches[0].pageY / this.data.letterHeight)]
})
},
_letterTouchMoveEvent: function (e) {
var index = parseInt(e.changedTouches[0].pageY / this.data.letterHeight)
if (index > this.data.alphabet.length - 1) {
index = this.data.alphabet.length - 1
} else if (index < 0) {
index = 0;
}
this.setData({
touchLetter: this.data.alphabet[index]
})
},
_letterTouchEndEvent: function (e) {
this.setData({
startTouchAlphabet: false,
touchLetter: ''
})
},
_letterTouchCancelEvent: function (e) {
this.setData({
startTouchAlphabet: false,
touchLetter: ''
})
},
}
})
alphabet-order-list.rar （13个子文件） 
alphabet-order-list 
app.js 98B components alphabet-order-list alphabet-order-list.wxml 1KB alphabet-order-list.js 5KB alphabet-order-list.json 48B alphabet-order-list.wxss 1KB project.config.json 577B utils util.js 491B pages chooseprovince chooseprovince.json 165B chooseprovince.js 2KB chooseprovince.wxml 183B chooseprovince.wxss 46B app.json 247B app.wxss 90B
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