1 line
7.3 KiB
JavaScript
1 line
7.3 KiB
JavaScript
import{__awaiter,__decorate}from"tslib";import{SuperComponent,wxComponent}from"../common/src/index";import config from"../common/config";import{trimSingleValue,trimValue}from"./tool";import props from"./props";import{getRect}from"../common/utils";import{isString,isFunction}from"../common/validator";import Bus from"../common/bus";const{prefix:prefix}=config,name=`${prefix}-slider`;let Slider=class extends SuperComponent{constructor(){super(...arguments),this.externalClasses=[`${prefix}-class`,`${prefix}-class-bar`,`${prefix}-class-bar-active`,`${prefix}-class-bar-disabled`,`${prefix}-class-cursor`],this.options={pureDataPattern:/^__/},this.properties=props,this.controlledProps=[{key:"value",event:"change"}],this.data={sliderStyles:"",classPrefix:name,initialLeft:null,initialRight:null,activeLeft:0,activeRight:0,maxRange:0,lineLeft:0,lineRight:0,dotTopValue:[0,0],_value:0,blockSize:20,isScale:!1,scaleArray:[],scaleTextArray:[],prefix:prefix,realLabel:"",extremeLabel:[],isVisibleToScreenReader:!1,identifier:[-1,-1],__inited:!1},this.observers={value(e){this.handlePropsChange(e)},_value(e){this.bus.on("initial",()=>this.renderLine(e)),this.toggleA11yTips()},marks(e){this.bus.on("initial",()=>this.handleMark(e))},label(e){this.setData({isShowLabel:Boolean(e)})},"showExtremeValue, min, max"(){this.getwExtremeLabel()}},this.lifetimes={created(){this.bus=new Bus},attached(){const{value:e}=this.properties;e||this.handlePropsChange(0),this.init(),this.injectPageScroll()}}}getwExtremeLabel(){const{showExtremeValue:e,min:t,max:i}=this.properties;e&&this.setData({extremeLabel:[this.getLabelByValue(Number(t),"min"),this.getLabelByValue(Number(i),"max")]})}injectPageScroll(){const{range:e,vertical:t}=this.properties;if(!e||!t)return;const i=getCurrentPages()||[];let a=null;if(i&&i.length-1>=0&&(a=i[i.length-1]),!a)return;const r=null==a?void 0:a.onPageScroll;a.onPageScroll=e=>{null==r||r.call(this,e),this.observerScrollTop(e)}}observerScrollTop(e){const{scrollTop:t}=e||{};this.pageScrollTop=t}toggleA11yTips(){this.setData({isVisibleToScreenReader:!0}),setTimeout(()=>{this.setData({isVisibleToScreenReader:!1})},2e3)}renderLine(e){const{min:t,max:i,range:a}=this.properties,{maxRange:r}=this.data;if(a){const a=r*(e[0]-Number(t))/(Number(i)-Number(t)),s=r*(Number(i)-e[1])/(Number(i)-Number(t));this.setLineStyle(a,s)}else this.setSingleBarWidth(e)}triggerValue(e){this.preval!==e&&(this.preval=e,this._trigger("change",{value:trimValue(e,this.properties)}))}getLabelByValue(e,t){const{label:i}=this.properties;if(isString(i)){let t=String(e);try{const a=/\${value}%/g;if(!a.test(i))throw t=i,new Error;t=i.replace(a,String(e))}catch(e){console.warn("fail to parse label prop, please pass string such as '${value}%'")}return t}return isFunction(i)?i(e,t):String(e)}handlePropsChange(e){const t=trimValue(e,this.properties),i=this.getLabelByValue(t);this.triggerValue(t);const a=()=>{this.setData({_value:t,realLabel:i})};0!==this.data.maxRange?a():this.init().then(a)}valueToPosition(e){const{min:t,max:i,theme:a}=this.properties,{blockSize:r,maxRange:s}=this.data,n="capsule"===a?Number(r)/2:0;return Math.round((Number(e)-Number(t))/(Number(i)-Number(t))*s)+n}handleMark(e){const t=e=>e.map(e=>({val:e,left:this.valueToPosition(e)}));if((null==e?void 0:e.length)&&Array.isArray(e)&&this.setData({isScale:!0,scaleArray:t(e),scaleTextArray:[]}),"[object Object]"===Object.prototype.toString.call(e)){const i=Object.keys(e).map(e=>Number(e)),a=i.map(t=>e[t]);this.setData({isScale:i.length>0,scaleArray:t(i),scaleTextArray:a})}}setSingleBarWidth(e){const t=this.valueToPosition(e);this.setData({lineBarWidth:`${t}px`})}init(){return __awaiter(this,void 0,void 0,function*(){if(this.data.__inited)return;const e=yield getRect(this,"#sliderLine"),{blockSize:t}=this.data,{theme:i,vertical:a}=this.properties,r=Number(t)/2,{top:s,bottom:n,right:l,left:o}=e;let h=a?n-s:l-o,u=a?s:o,c=a?n:l;0===u&&0===c||("capsule"===i&&(h=h-Number(t)-6,u-=r,c-=r),this.setData({maxRange:h,initialLeft:u,initialRight:c,__inited:!0}),this.bus.emit("initial"))})}stepValue(e){const{step:t,min:i,max:a}=this.properties,r=String(t).indexOf(".")>-1?String(t).length-String(t).indexOf(".")-1:0;return trimSingleValue(Number((Math.round(e/Number(t))*Number(t)).toFixed(r)),Number(i),Number(a))}onSingleLineTap(e){const{disabled:t}=this.properties;if(t)return;const i=-1===this.data.identifier[0];if(i){const[t]=e.changedTouches;this.data.identifier[0]=t.identifier}const a=this.getSingleChangeValue(e);i&&(this.data.identifier[0]=-1),this.triggerValue(a)}getSingleChangeValue(e){const{min:t,max:i,theme:a,vertical:r}=this.properties,{initialLeft:s,maxRange:n,blockSize:l}=this.data,o=e.changedTouches.find(e=>e.identifier===this.data.identifier[0]),h=this.getPagePosition(o);let u=0;"capsule"===a?(u=Number(l),r&&(u*=2),u+=6):r&&(u=Number(l));const c=h-s-u;let g=0;return g=c<=0?Number(t):c>=n?Number(i):c/n*(Number(i)-Number(t))+Number(t),this.stepValue(g)}convertPosToValue(e,t){const{maxRange:i}=this.data,{max:a,min:r}=this.properties;return 0===t?e/i*(Number(a)-Number(r))+Number(r):Number(a)-e/i*(Number(a)-Number(r))}onLineTap(e){const{disabled:t,theme:i,vertical:a}=this.properties,{initialLeft:r,initialRight:s,maxRange:n,blockSize:l}=this.data;if(t)return;const[o]=e.changedTouches,h=this.getPagePosition(o),u="capsule"===i?Number(l)/2:0;h-r<0||-(h-s)>n+Number(l)||Promise.all([getRect(this,"#leftDot"),getRect(this,"#rightDot")]).then(([e,t])=>{const n=this.pageScrollTop||0,o=a?e.top+n:e.left,c=Math.abs(h-o-u),g=a?t.top+n:t.left,m=c<Math.abs(g-h+u);let p=0;if("capsule"===i?(p=Number(l),a&&(p*=2),p+=6):a&&(p=Number(l)),m){const e=h-r-p,t=this.convertPosToValue(e,0);this.triggerValue([this.stepValue(t),this.data._value[1]])}else{let e=-(h-s);a&&(e+=p/2);const t=this.convertPosToValue(e,1);this.triggerValue([this.data._value[0],this.stepValue(t)])}})}onTouchStart(e){this.triggerEvent("dragstart",{e:e});const[t]=e.changedTouches;"rightDot"===e.currentTarget.id?this.data.identifier[1]=t.identifier:this.data.identifier[0]=t.identifier}onTouchMoveLeft(e){const{disabled:t,theme:i,vertical:a}=this.properties,{initialLeft:r,_value:s,blockSize:n}=this.data;if(t)return;const l=e.changedTouches.find(e=>e.identifier===this.data.identifier[0]),o=this.getPagePosition(l);let h=0;"capsule"===i&&(h+=Number(n)),a&&(h+=Number(n)+6);const u=o-r-h,c=[...s],g=this.convertPosToValue(u,0);c[0]=this.stepValue(g),this.triggerValue(c)}onTouchMoveRight(e){const{disabled:t,vertical:i}=this.properties,{initialRight:a,_value:r,blockSize:s}=this.data;if(t)return;const n=e.changedTouches.find(e=>e.identifier===this.data.identifier[1]),l=this.getPagePosition(n);let o=0;i&&(o+=Number(s)/2+6);const h=-(l-a-o),u=[...r],c=this.convertPosToValue(h,1);u[1]=this.stepValue(c),this.triggerValue(u)}setLineStyle(e,t){const{theme:i}=this.properties,{blockSize:a,maxRange:r}=this.data,s="capsule"===i?Number(a)/2:0,[n,l]=this.data._value,o=e=>parseInt(e,10);this.setData({dotTopValue:[n,l],realLabel:[this.getLabelByValue(n,"start"),this.getLabelByValue(l,"end")]}),e+t<=r?this.setData({lineLeft:o(e+s),lineRight:o(t+s)}):this.setData({lineLeft:o(r+s-t),lineRight:o(r-e+1.5*s)})}onTouchEnd(e){this.triggerEvent("dragend",{e:e,value:this.data._value}),"rightDot"===e.currentTarget.id?this.data.identifier[1]=-1:this.data.identifier[0]=-1}getPagePosition(e){const{pageX:t,pageY:i}=e,{vertical:a}=this.properties;return a?i:t}};Slider=__decorate([wxComponent()],Slider);export default Slider; |