var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
|
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
|
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
|
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
|
return c > 3 && r && Object.defineProperty(target, key, r), r;
|
};
|
import { SuperComponent, wxComponent } from '../common/src/index';
|
import config from '../common/config';
|
import props from './props';
|
import { unitConvert } from '../common/utils';
|
const { prefix } = config;
|
const name = `${prefix}-pull-down-refresh`;
|
let PullDownRefresh = class PullDownRefresh extends SuperComponent {
|
constructor() {
|
super(...arguments);
|
this.pixelRatio = 1;
|
this.startPoint = null;
|
this.isPulling = false;
|
this.loadingBarHeight = 100;
|
this.maxRefreshAnimateTimeFlag = 0;
|
this.closingAnimateTimeFlag = 0;
|
this.externalClasses = [`${prefix}-class`, `${prefix}-class-loading`, `${prefix}-class-text`, `${prefix}-class-indicator`];
|
this.options = {
|
multipleSlots: true,
|
};
|
this.relations = {
|
'../back-top/back-top': {
|
type: 'descendant',
|
},
|
};
|
this.properties = props;
|
this.data = {
|
prefix,
|
classPrefix: name,
|
barHeight: 0,
|
refreshStatus: -1,
|
loosing: false,
|
enableToRefresh: true,
|
scrollTop: 0,
|
};
|
this.lifetimes = {
|
attached() {
|
const { screenWidth } = wx.getSystemInfoSync();
|
const { loadingBarHeight, loadingTexts } = this.properties;
|
this.setData({
|
loadingTexts: Array.isArray(loadingTexts) && loadingTexts.length >= 4
|
? loadingTexts
|
: ['下拉刷新', '松手刷新', '正在刷新', '刷新完成'],
|
});
|
this.pixelRatio = 750 / screenWidth;
|
Object.defineProperty(this, 'maxBarHeight', {
|
get() {
|
return unitConvert(this.data.maxBarHeight);
|
},
|
});
|
Object.defineProperty(this, 'loadingBarHeight', {
|
get() {
|
return unitConvert(this.data.loadingBarHeight);
|
},
|
});
|
if (loadingBarHeight) {
|
this.setData({
|
computedLoadingBarHeight: unitConvert(loadingBarHeight),
|
});
|
}
|
},
|
detached() {
|
clearTimeout(this.maxRefreshAnimateTimeFlag);
|
clearTimeout(this.closingAnimateTimeFlag);
|
},
|
};
|
this.observers = {
|
value(val) {
|
if (!val) {
|
clearTimeout(this.maxRefreshAnimateTimeFlag);
|
if (this.data.refreshStatus > 0) {
|
this.setData({
|
refreshStatus: 3,
|
});
|
}
|
this.setData({ barHeight: 0 });
|
}
|
else {
|
this.doRefresh();
|
}
|
},
|
};
|
this.methods = {
|
onScrollToBottom() {
|
this.triggerEvent('scrolltolower');
|
},
|
onScrollToTop() {
|
this.setData({
|
enableToRefresh: true,
|
});
|
},
|
onScroll(e) {
|
const { scrollTop } = e.detail;
|
this.setData({
|
enableToRefresh: scrollTop === 0,
|
});
|
this.triggerEvent('scroll', { scrollTop });
|
},
|
onTouchStart(e) {
|
if (this.isPulling || !this.data.enableToRefresh)
|
return;
|
const { touches } = e;
|
if (touches.length !== 1)
|
return;
|
const { pageX, pageY } = touches[0];
|
this.setData({ loosing: false });
|
this.startPoint = { pageX, pageY };
|
this.isPulling = true;
|
},
|
onTouchMove(e) {
|
if (!this.startPoint)
|
return;
|
const { touches } = e;
|
if (touches.length !== 1)
|
return;
|
const { pageY } = touches[0];
|
const offset = pageY - this.startPoint.pageY;
|
if (offset > 0) {
|
this.setRefreshBarHeight(offset);
|
}
|
},
|
onTouchEnd(e) {
|
if (!this.startPoint)
|
return;
|
const { changedTouches } = e;
|
if (changedTouches.length !== 1)
|
return;
|
const { pageY } = changedTouches[0];
|
const barHeight = pageY - this.startPoint.pageY;
|
this.startPoint = null;
|
this.isPulling = false;
|
this.setData({ loosing: true });
|
if (barHeight > this.loadingBarHeight) {
|
this._trigger('change', { value: true });
|
this.triggerEvent('refresh');
|
}
|
else {
|
this.setData({ barHeight: 0 });
|
}
|
},
|
onDragStart(e) {
|
const { scrollTop, scrollLeft } = e.detail;
|
this.triggerEvent('dragstart', { scrollTop, scrollLeft });
|
},
|
onDragging(e) {
|
const { scrollTop, scrollLeft } = e.detail;
|
this.triggerEvent('dragging', { scrollTop, scrollLeft });
|
},
|
onDragEnd(e) {
|
const { scrollTop, scrollLeft } = e.detail;
|
this.triggerEvent('dragend', { scrollTop, scrollLeft });
|
},
|
doRefresh() {
|
this.setData({
|
barHeight: this.loadingBarHeight,
|
refreshStatus: 2,
|
loosing: true,
|
});
|
this.maxRefreshAnimateTimeFlag = setTimeout(() => {
|
this.maxRefreshAnimateTimeFlag = null;
|
if (this.data.refreshStatus === 2) {
|
this.triggerEvent('timeout');
|
this._trigger('change', { value: false });
|
}
|
}, this.properties.refreshTimeout);
|
},
|
setRefreshBarHeight(value) {
|
const barHeight = Math.min(value, this.maxBarHeight);
|
const data = { barHeight };
|
if (barHeight >= this.loadingBarHeight) {
|
data.refreshStatus = 1;
|
}
|
else {
|
data.refreshStatus = 0;
|
}
|
return new Promise((resolve) => {
|
this.setData(data, () => resolve(barHeight));
|
});
|
},
|
setScrollTop(scrollTop) {
|
this.setData({ scrollTop });
|
},
|
scrollToTop() {
|
this.setScrollTop(0);
|
},
|
};
|
}
|
};
|
PullDownRefresh = __decorate([
|
wxComponent()
|
], PullDownRefresh);
|
export default PullDownRefresh;
|
