{"version":3,"file":"DfRGvVWi.js","sources":["../../../../node_modules/quasar/src/components/scroll-observer/QScrollObserver.js"],"sourcesContent":["import { watch, onMounted, onBeforeUnmount, getCurrentInstance } from 'vue'\n\nimport { createComponent } from '../../utils/private.create/create.js'\nimport { getScrollTarget, getVerticalScrollPosition, getHorizontalScrollPosition, scrollTargetProp } from '../../utils/scroll/scroll.js'\nimport { listenOpts, noop } from '../../utils/event/event.js'\n\nconst { passive } = listenOpts\nconst axisValues = [ 'both', 'horizontal', 'vertical' ]\n\nexport default createComponent({\n  name: 'QScrollObserver',\n\n  props: {\n    axis: {\n      type: String,\n      validator: v => axisValues.includes(v),\n      default: 'vertical'\n    },\n\n    debounce: [ String, Number ],\n\n    scrollTarget: scrollTargetProp\n  },\n\n  emits: [ 'scroll' ],\n\n  setup (props, { emit }) {\n    const scroll = {\n      position: {\n        top: 0,\n        left: 0\n      },\n\n      direction: 'down',\n      directionChanged: false,\n\n      delta: {\n        top: 0,\n        left: 0\n      },\n\n      inflectionPoint: {\n        top: 0,\n        left: 0\n      }\n    }\n\n    let clearTimer = null, localScrollTarget, parentEl\n\n    watch(() => props.scrollTarget, () => {\n      unconfigureScrollTarget()\n      configureScrollTarget()\n    })\n\n    function emitEvent () {\n      clearTimer !== null && clearTimer()\n\n      const top = Math.max(0, getVerticalScrollPosition(localScrollTarget))\n      const left = getHorizontalScrollPosition(localScrollTarget)\n\n      const delta = {\n        top: top - scroll.position.top,\n        left: left - scroll.position.left\n      }\n\n      if (\n        (props.axis === 'vertical' && delta.top === 0)\n        || (props.axis === 'horizontal' && delta.left === 0)\n      ) {\n        return\n      }\n\n      const curDir = Math.abs(delta.top) >= Math.abs(delta.left)\n        ? (delta.top < 0 ? 'up' : 'down')\n        : (delta.left < 0 ? 'left' : 'right')\n\n      scroll.position = { top, left }\n      scroll.directionChanged = scroll.direction !== curDir\n      scroll.delta = delta\n\n      if (scroll.directionChanged === true) {\n        scroll.direction = curDir\n        scroll.inflectionPoint = scroll.position\n      }\n\n      emit('scroll', { ...scroll })\n    }\n\n    function configureScrollTarget () {\n      localScrollTarget = getScrollTarget(parentEl, props.scrollTarget)\n      localScrollTarget.addEventListener('scroll', trigger, passive)\n      trigger(true)\n    }\n\n    function unconfigureScrollTarget () {\n      if (localScrollTarget !== void 0) {\n        localScrollTarget.removeEventListener('scroll', trigger, passive)\n        localScrollTarget = void 0\n      }\n    }\n\n    function trigger (immediately) {\n      if (immediately === true || props.debounce === 0 || props.debounce === '0') {\n        emitEvent()\n      }\n      else if (clearTimer === null) {\n        const [ timer, fn ] = props.debounce\n          ? [ setTimeout(emitEvent, props.debounce), clearTimeout ]\n          : [ requestAnimationFrame(emitEvent), cancelAnimationFrame ]\n\n        clearTimer = () => {\n          fn(timer)\n          clearTimer = null\n        }\n      }\n    }\n\n    const { proxy } = getCurrentInstance()\n\n    watch(() => proxy.$q.lang.rtl, emitEvent)\n\n    onMounted(() => {\n      parentEl = proxy.$el.parentNode\n      configureScrollTarget()\n    })\n\n    onBeforeUnmount(() => {\n      clearTimer !== null && clearTimer()\n      unconfigureScrollTarget()\n    })\n\n    // expose public methods\n    Object.assign(proxy, {\n      trigger,\n      getPosition: () => scroll\n    })\n\n    return noop\n  }\n})\n"],"names":["passive","listenOpts","axisValues","QScrollObserver","createComponent","v","scrollTargetProp","props","emit","scroll","clearTimer","localScrollTarget","parentEl","watch","unconfigureScrollTarget","configureScrollTarget","emitEvent","top","getVerticalScrollPosition","left","getHorizontalScrollPosition","delta","curDir","getScrollTarget","trigger","immediately","timer","fn","proxy","getCurrentInstance","onMounted","onBeforeUnmount","noop"],"mappings":"+GAMA,KAAM,CAAE,QAAAA,CAAS,EAAGC,EACdC,EAAa,CAAE,OAAQ,aAAc,UAAY,EAEvDC,EAAeC,EAAgB,CAC7B,KAAM,kBAEN,MAAO,CACL,KAAM,CACJ,KAAM,OACN,UAAWC,GAAKH,EAAW,SAASG,CAAC,EACrC,QAAS,UACV,EAED,SAAU,CAAE,OAAQ,MAAQ,EAE5B,aAAcC,CACf,EAED,MAAO,CAAE,QAAU,EAEnB,MAAOC,EAAO,CAAE,KAAAC,GAAQ,CACtB,MAAMC,EAAS,CACb,SAAU,CACR,IAAK,EACL,KAAM,CACP,EAED,UAAW,OACX,iBAAkB,GAElB,MAAO,CACL,IAAK,EACL,KAAM,CACP,EAED,gBAAiB,CACf,IAAK,EACL,KAAM,CACP,CACF,EAED,IAAIC,EAAa,KAAMC,EAAmBC,EAE1CC,EAAM,IAAMN,EAAM,aAAc,IAAM,CACpCO,EAAyB,EACzBC,EAAuB,CAC7B,CAAK,EAED,SAASC,GAAa,CACpBN,IAAe,MAAQA,EAAY,EAEnC,MAAMO,EAAM,KAAK,IAAI,EAAGC,EAA0BP,CAAiB,CAAC,EAC9DQ,EAAOC,EAA4BT,CAAiB,EAEpDU,EAAQ,CACZ,IAAKJ,EAAMR,EAAO,SAAS,IAC3B,KAAMU,EAAOV,EAAO,SAAS,IAC9B,EAED,GACGF,EAAM,OAAS,YAAcc,EAAM,MAAQ,GACxCd,EAAM,OAAS,cAAgBc,EAAM,OAAS,EAElD,OAGF,MAAMC,EAAS,KAAK,IAAID,EAAM,GAAG,GAAK,KAAK,IAAIA,EAAM,IAAI,EACpDA,EAAM,IAAM,EAAI,KAAO,OACvBA,EAAM,KAAO,EAAI,OAAS,QAE/BZ,EAAO,SAAW,CAAE,IAAAQ,EAAK,KAAAE,CAAM,EAC/BV,EAAO,iBAAmBA,EAAO,YAAca,EAC/Cb,EAAO,MAAQY,EAEXZ,EAAO,mBAAqB,KAC9BA,EAAO,UAAYa,EACnBb,EAAO,gBAAkBA,EAAO,UAGlCD,EAAK,SAAU,CAAE,GAAGC,EAAQ,CAC7B,CAED,SAASM,GAAyB,CAChCJ,EAAoBY,EAAgBX,EAAUL,EAAM,YAAY,EAChEI,EAAkB,iBAAiB,SAAUa,EAASxB,CAAO,EAC7DwB,EAAQ,EAAI,CACb,CAED,SAASV,GAA2B,CAC9BH,IAAsB,SACxBA,EAAkB,oBAAoB,SAAUa,EAASxB,CAAO,EAChEW,EAAoB,OAEvB,CAED,SAASa,EAASC,EAAa,CAC7B,GAAIA,IAAgB,IAAQlB,EAAM,WAAa,GAAKA,EAAM,WAAa,IACrES,EAAW,UAEJN,IAAe,KAAM,CAC5B,KAAM,CAAEgB,EAAOC,CAAI,EAAGpB,EAAM,SACxB,CAAE,WAAWS,EAAWT,EAAM,QAAQ,EAAG,YAAc,EACvD,CAAE,sBAAsBS,CAAS,EAAG,oBAAsB,EAE9DN,EAAa,IAAM,CACjBiB,EAAGD,CAAK,EACRhB,EAAa,IACd,CACF,CACF,CAED,KAAM,CAAE,MAAAkB,CAAO,EAAGC,EAAoB,EAEtC,OAAAhB,EAAM,IAAMe,EAAM,GAAG,KAAK,IAAKZ,CAAS,EAExCc,EAAU,IAAM,CACdlB,EAAWgB,EAAM,IAAI,WACrBb,EAAuB,CAC7B,CAAK,EAEDgB,EAAgB,IAAM,CACpBrB,IAAe,MAAQA,EAAY,EACnCI,EAAyB,CAC/B,CAAK,EAGD,OAAO,OAAOc,EAAO,CACnB,QAAAJ,EACA,YAAa,IAAMf,CACzB,CAAK,EAEMuB,CACR,CACH,CAAC","x_google_ignoreList":[0]}