antd-mini
Version:
antd-mini 是支付宝小程序 UI 组件库，遵循 Ant Design 规范。
202 lines (201 loc) • 7.79 kB
JavaScript
import { __awaiter, __generator } from "tslib";
import equal from 'fast-deep-equal';
import { getAllInstanceBoundingClientRect, getInstanceBoundingClientRect, } from '../_util/jsapi/get-instance-bounding-client-rect';
import { Component, getValueFromProps, triggerEventValues, } from '../_util/simply';
import { IndexBarDefaultProps } from './props';
Component(IndexBarDefaultProps, {
getInstance: function () {
if (this.$id) {
return my;
}
return this;
},
init: function (nextProps) {
var _this = this;
var defaultCurrent = nextProps.defaultCurrent, current = nextProps.current, items = nextProps.items;
this.initItemHeight();
this.initTopRange();
var initCurrent = this.isControlled(nextProps)
? current
: defaultCurrent;
var _index = items === null || items === void 0 ? void 0 : items.findIndex(function (u) { return initCurrent === u.label; });
this.setData({
currentKey: _index,
touchKeyIndex: _index,
touchKey: initCurrent,
}, function () {
_this.setData({
touchKeyIndex: -1,
touchKey: '',
});
});
},
isControlled: function (nextProps, valueKey) {
if (valueKey === void 0) { valueKey = 'current'; }
if ('controlled' in nextProps) {
return nextProps.controlled;
}
return valueKey in nextProps;
},
// 初始化每个块的高度，用已计算滑动距离
initItemHeight: function () {
return __awaiter(this, void 0, void 0, function () {
var ret, height;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, getInstanceBoundingClientRect(this.getInstance(), "#ant-alphabet-0")];
case 1:
ret = _a.sent();
if (ret === null)
return [2 /*return*/];
height = ret.height;
this.setData({ itemHeight: height });
return [2 /*return*/];
}
});
});
},
onTouchStart: function (e) {
var moving = this.data.moving;
var items = getValueFromProps(this, 'items');
if (moving)
return;
var _a = e.currentTarget.dataset.item, item = _a.item, index = _a.index;
var point = (e && e.touches && e.touches[0]) || {};
var clientY = point.clientY;
this.setData({
touchClientY: clientY,
touchKeyIndex: index,
touchKey: items[index].label,
moving: true,
showMask: true,
currentKey: index,
});
this.onAlphabetClick(item, index); // 触摸开始
},
onAlphabetClick: function (item, index) {
return __awaiter(this, void 0, void 0, function () {
var vibrate, _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
vibrate = getValueFromProps(this, 'vibrate');
_a = vibrate;
if (!_a) return [3 /*break*/, 2];
return [4 /*yield*/, my.vibrateShort()];
case 1:
_a = (_b.sent());
_b.label = 2;
case 2:
_a;
triggerEventValues(this, 'change', [item, index]);
return [2 /*return*/];
}
});
});
},
onTouchEnd: function () {
// 没进入moving状态就不处理
if (!this.data.moving)
return;
this.setData({
touchKeyIndex: -1,
touchKey: '',
showMask: false,
moving: false,
});
},
onTouchMove: function (e) {
var _a = this.data, touchClientY = _a.touchClientY, touchKeyIndex = _a.touchKeyIndex, itemHeight = _a.itemHeight, touchKey = _a.touchKey;
var items = getValueFromProps(this, 'items');
var point = e.changedTouches[0];
var movePageY = point.clientY;
// 滑动距离
var movingHeight = Math.abs(movePageY - touchClientY);
// 滑动几个itemHeight的距离即等于滑动了几格，不那么精准，但是几乎可以忽略不计
var movingNum = parseInt("".concat(movingHeight / itemHeight), 10);
// 上 or 下
var isUp = movePageY < touchClientY;
// 新的触发的索引应该在哪个index
var newIndex = isUp
? touchKeyIndex - movingNum
: touchKeyIndex + movingNum;
// 超出索引列表范围 or 索引没变化return
if (!items[newIndex] || touchKey === items[newIndex].label)
return;
// 结算
this.setData({ touchKey: items[newIndex].label, currentKey: newIndex });
this.onAlphabetClick(items[newIndex], newIndex);
},
onScroll: function (e) {
var _a = this.data, topRange = _a.topRange, currentKey = _a.currentKey, moving = _a.moving;
var items = getValueFromProps(this, 'items');
var scrollTop = e.detail.scrollTop;
var newIndex = 0;
if (scrollTop + 1 > topRange[topRange.length - 1]) {
newIndex = topRange.length;
}
else {
newIndex = topRange === null || topRange === void 0 ? void 0 : topRange.findIndex(function (h) { return scrollTop + 1 < h; });
}
if (currentKey !== newIndex - 1 && newIndex - 1 >= 0 && !moving) {
this.setData({
currentKey: newIndex - 1,
});
this.onAlphabetClick(items[newIndex - 1], newIndex - 1);
}
},
initTopRange: function () {
return __awaiter(this, void 0, void 0, function () {
var ret, arr;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, getAllInstanceBoundingClientRect(this.getInstance(), '.ant-indexbar-side-list')];
case 1:
ret = _a.sent();
if (ret.length === 0)
return [2 /*return*/];
arr = [];
ret.forEach(function (u) {
arr.push(u.top - ret[0].top);
});
this.setData({ topRange: arr, hasDefaultSlot: !!ret[0].height });
return [2 /*return*/];
}
});
});
},
}, {
touchClientY: 0,
touchKeyIndex: -1,
touchKey: '',
itemHeight: 16,
moving: false,
showMask: false,
currentKey: 0,
topRange: [],
hasDefaultSlot: true,
}, undefined, {
didMount: function () {
this.init(getValueFromProps(this));
},
deriveDataFromProps: function (nextProps) {
var _prop = getValueFromProps(this);
var current = nextProps.current, items = nextProps.items;
if (!equal(_prop.items, nextProps.items)) {
this.init(nextProps);
}
if (_prop.current !== current) {
var _index = items === null || items === void 0 ? void 0 : items.findIndex(function (u) { return current === u.label; });
this.setData({
currentKey: _index,
});
if (!this.isControlled(nextProps)) {
this.setData({
touchKeyIndex: _index,
touchKey: current,
});
}
}
},
});