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- const isObj=e=>{const t=typeof e;return null!==e&&("object"===t||"function"===t)},getClassNames=e=>({enter:`l-${e}-enter l-${e}-enter-active l-enter-class l-enter-active-class`,"enter-to":`l-${e}-enter-to l-${e}-enter-active l-enter-to-class l-enter-active-class`,leave:`l-${e}-leave l-${e}-leave-active l-leave-class l-leave-active-class`,"leave-to":`l-${e}-leave-to l-${e}-leave-active l-leave-to-class l-leave-active-class`}),nextTick=()=>new Promise(e=>setTimeout(e,1e3/30));export default e=>Behavior({properties:{customStyle:String,show:{type:Boolean,value:e,observer:"observeShow"},duration:{type:null,value:300,observer:"observeDuration"},name:{type:String,value:"fade"}},data:{type:"",inited:!1,display:!1},attached(){this.data.show&&this.enter()},methods:{observeShow(e){e?this.enter():this.leave()},enter(){const{duration:e,name:t}=this.data,s=getClassNames(t),a=isObj(e)?e.enter:e;this.status="enter",this.triggerEvent("linbeforeenter"),Promise.resolve().then(nextTick).then(()=>{this.checkStatus("enter"),this.triggerEvent("linenter"),this.setData({inited:!0,display:!0,classes:s.enter,currentDuration:a})}).then(nextTick).then(()=>{this.checkStatus("enter"),this.transitionEnded=!1,this.setData({classes:s["enter-to"]})}).catch(()=>{})},leave(){if(!this.data.display)return;const{duration:e,name:t}=this.data,s=getClassNames(t),a=isObj(e)?e.leave:e;this.status="leave",this.triggerEvent("linbeforeleave"),Promise.resolve().then(nextTick).then(()=>{this.checkStatus("leave"),this.triggerEvent("linleave"),this.setData({classes:s.leave,currentDuration:a})}).then(nextTick).then(()=>{this.checkStatus("leave"),this.transitionEnded=!1,setTimeout(()=>this.onTransitionEnd(),a),this.setData({classes:s["leave-to"]})}).catch(()=>{})},checkStatus(e){if(e!==this.status)throw new Error("incongruent status: "+e)},onTransitionEnd(){if(this.transitionEnded)return;this.transitionEnded=!0,this.triggerEvent("linafter"+this.status);const{show:e,display:t}=this.data;!e&&t&&this.setData({display:!1})}}});
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