/*!
 * (C) Ionic http://ionicframework.com - MIT License
 */
class t{constructor(t,s,i,h,e){this.id=s,this.name=i,this.disableScroll=e,this.priority=1e6*h+s,this.ctrl=t}canStart(){return!!this.ctrl&&this.ctrl.canStart(this.name)}start(){return!!this.ctrl&&this.ctrl.start(this.name,this.id,this.priority)}capture(){if(!this.ctrl)return!1;const t=this.ctrl.capture(this.name,this.id,this.priority);return t&&this.disableScroll&&this.ctrl.disableScroll(this.id),t}release(){this.ctrl&&(this.ctrl.release(this.id),this.disableScroll&&this.ctrl.enableScroll(this.id))}destroy(){this.release(),this.ctrl=void 0}}class s{constructor(t,s,i,h){this.id=s,this.disable=i,this.disableScroll=h,this.ctrl=t}block(){if(this.ctrl){if(this.disable)for(const t of this.disable)this.ctrl.disableGesture(t,this.id);this.disableScroll&&this.ctrl.disableScroll(this.id)}}unblock(){if(this.ctrl){if(this.disable)for(const t of this.disable)this.ctrl.enableGesture(t,this.id);this.disableScroll&&this.ctrl.enableScroll(this.id)}}destroy(){this.unblock(),this.ctrl=void 0}}const i="backdrop-no-scroll",h=new class{constructor(){this.gestureId=0,this.requestedStart=new Map,this.disabledGestures=new Map,this.disabledScroll=new Set}createGesture(s){var i;return new t(this,this.newID(),s.name,null!==(i=s.priority)&&void 0!==i?i:0,!!s.disableScroll)}createBlocker(t={}){return new s(this,this.newID(),t.disable,!!t.disableScroll)}start(t,s,i){return this.canStart(t)?(this.requestedStart.set(s,i),!0):(this.requestedStart.delete(s),!1)}capture(t,s,i){if(!this.start(t,s,i))return!1;const h=this.requestedStart;let e=-1e4;if(h.forEach((t=>{e=Math.max(e,t)})),e===i){this.capturedId=s,h.clear();const i=new CustomEvent("ionGestureCaptured",{detail:{gestureName:t}});return document.dispatchEvent(i),!0}return h.delete(s),!1}release(t){this.requestedStart.delete(t),this.capturedId===t&&(this.capturedId=void 0)}disableGesture(t,s){let i=this.disabledGestures.get(t);void 0===i&&(i=new Set,this.disabledGestures.set(t,i)),i.add(s)}enableGesture(t,s){const i=this.disabledGestures.get(t);void 0!==i&&i.delete(s)}disableScroll(t){this.disabledScroll.add(t),1===this.disabledScroll.size&&document.body.classList.add(i)}enableScroll(t){this.disabledScroll.delete(t),0===this.disabledScroll.size&&document.body.classList.remove(i)}canStart(t){return void 0===this.capturedId&&!this.isDisabled(t)}isCaptured(){return void 0!==this.capturedId}isScrollDisabled(){return this.disabledScroll.size>0}isDisabled(t){const s=this.disabledGestures.get(t);return!!(s&&s.size>0)}newID(){return this.gestureId++,this.gestureId}};export{h as G}