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- import validator from"../behaviors/validator";Component({externalClasses:["l-class"],behaviors:[validator],relations:{"../sticky-item/index":{type:"child",linked(){this.checkSupportCssSticky().then(t=>{t||this.updateStickyItemsSizeData()}).catch(t=>{console.error(t)})},linkChanged(){this.checkSupportCssSticky().then(t=>{t||this.updateStickyItemsSizeData()}).catch(t=>{console.error(t)})},unlinked(){this.checkSupportCssSticky().then(t=>{t||this.updateStickyItemsSizeData()}).catch(t=>{console.error(t)})}}},properties:{mode:{type:String,value:"js",options:["js","css"]},scrollTop:Number},observers:{scrollTop:function(){this.checkSupportCssSticky().then(t=>{t||this.updateStickyItemsPosition()}).catch(t=>{console.error(t)})}},lifetimes:{attached(){this.checkSupportCssSticky().then(t=>{t||this.initSticky()}).catch(t=>{console.error(t)})}},methods:{initSticky(){wx.lin=wx.lin||{},wx.lin.flushSticky=()=>{this.updateStickyItemsSizeData()},wx.lin.setScrollTop=t=>{this.data.scrollTop=t,this.checkSupportCssSticky().then(t=>{t||this.updateStickyItemsPosition()}).catch(t=>{console.error(t)})}},updateStickyItemsPosition(){const t=this.getStickyItemNodes();for(let e of t)e.updateStickyItemPosition(this.data.scrollTop)},updateStickyItemsSizeData(){this.getStickyItemNodes().forEach((t,e)=>{t.updateStickyItemBaseData(e)})},getStickyItemNodes(){return this.getRelationNodes("../sticky-item/index")},checkSupportCssSticky(){return new Promise(t=>{const e=this.getStickyItemNodes();0===e.length&&t(!1),wx.createSelectorQuery().in(e[0]).select(".l-sticky-item-header").fields({computedStyle:["position"]}).exec(e=>{null===e[0]?t(!1):t("sticky"===e[0].position)})})}}});
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