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alphabetical-scroll-bar

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alphabetical-scroll-bar - npm Package Compare versions

Comparing version 2.0.0 to 2.0.1

2

bundles/alphabetical-scroll-bar.umd.js

@@ -145,3 +145,2 @@ (function (global, factory) {

var newLetterIndex = this.getLetterIndexFromCoordinates(x, y);
this.letterIndex = Math.round(newLetterIndex * (this.visibleLetters.length / this.alphabet.length));
if (!this.navigateOnHover)

@@ -180,2 +179,3 @@ return;

}
this.letterIndex = Math.round(letterIndex * (this.visibleLetters.length / this.alphabet.length));
return letterIndex;

@@ -182,0 +182,0 @@ };

@@ -1,2 +0,2 @@

!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("@angular/core"),require("@angular/common")):"function"==typeof define&&define.amd?define("alphabetical-scroll-bar",["exports","@angular/core","@angular/common"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self)["alphabetical-scroll-bar"]={},t.ng.core,t.ng.common)}(this,(function(t,e,n){"use strict";var i=function(){};i.ɵprov=e.ɵɵdefineInjectable({factory:function(){return new i},token:i,providedIn:"root"}),i.decorators=[{type:e.Injectable,args:[{providedIn:"root"}]}],i.ctorParameters=function(){return[]};var o=function(){function t(){this.letterMagnification=!1,this.exactX=!1,this.alphabet="abcdefghijklmnopqrstuvwxyz".toUpperCase().split(""),this.validLetters=void 0,this.navigateOnHover=!1,this.letterChange=new e.EventEmitter,this.endTouch=new e.EventEmitter,this.visibleLetters=[],this.active=!1,this.hidden=0}return t.prototype.ngOnInit=function(){var t=this,e=setInterval((function(){t.alphabetContainer.nativeElement.clientHeight>0&&(t.onResize(),window.addEventListener("resize",t.onResize.bind(t)),clearInterval(e))}),100)},t.prototype.ngOnDestroy=function(){window.removeEventListener("resize",this.onResize.bind(this))},t.prototype.onResize=function(){var t=this.alphabet,e=Number(window.getComputedStyle(document.body).getPropertyValue("font-size").match(/\d+/)[0]),n=this.alphabetContainer.nativeElement.clientHeight,i=Math.ceil(this.letterIndex*n/e);this.letterIndex=i,this.onLetterIndexChange(i);var o=this.alphabet.length;if(n/e<o){for(var r=o-Math.floor(n/e),a=this.getNumHiddenHalves(r,o)+1,s=this.alphabet.slice(0,Math.ceil(o/2)),l=this.alphabet.slice(Math.floor(o/2)).reverse(),c=0;c<a;c++)s=s.filter((function(t,e){return e%2==0})),l=l.filter((function(t,e){return e%2==0}));s=s.reduce((function(t,e,n){return n>0&&t.push("·"),t.push(e),t}),[]),l=l.reduce((function(t,e,n){return n>0&&t.push("·"),t.push(e),t}),[]),this.alphabet.length%2==0&&s.push("·"),t=s.concat(l.reverse())}this.visibleLetters=t},t.prototype.getNumHiddenHalves=function(t,e){return t>e/2?1+this.getNumHiddenHalves(t%(e/2),Math.ceil(e/2)):0},t.prototype.isActive=function(t){return this.letterIndex===t+1&&this.active},t.prototype.isActiveNeighbor1=function(t){return(t+1===this.letterIndex-1||t+1===this.letterIndex+1)&&this.active},t.prototype.isActiveNeighbor2=function(t){return(t+1===this.letterIndex-2||t+1===this.letterIndex+2)&&this.active},t.prototype.isActiveNeighbor3=function(t){return(t+1===this.letterIndex-3||t+1===this.letterIndex+3)&&this.active},t.prototype.touchStart=function(t){this.active=!0,this.touchMove(t)},t.prototype.touchMove=function(t){var e=t.touches[0].clientX,n=t.touches[0].clientY,i=this.getLetterIndexFromCoordinates(e,n);i&&this.onLetterIndexChange(i)},t.prototype.touchEnd=function(){this.endTouch.emit(),this.active=!1},t.prototype.mouseEnter=function(t){this.active=!0,this.mouseMove(t)},t.prototype.mouseMove=function(t){var e=t.clientX,n=t.clientY,i=this.getLetterIndexFromCoordinates(e,n);this.letterIndex=Math.round(i*(this.visibleLetters.length/this.alphabet.length)),this.navigateOnHover&&i&&this.onLetterIndexChange(i)},t.prototype.mouseLeave=function(t){this.active=!1},t.prototype.click=function(t){var e=t.clientX,n=t.clientY,i=this.getLetterIndexFromCoordinates(e,n);this.onLetterIndexChange(i)},t.prototype.getLetterIndexFromCoordinates=function(t,e){var n=null,i=this.alphabetContainer.nativeElement.getBoundingClientRect().top,o=this.alphabetContainer.nativeElement.clientHeight,r=Math.ceil((e-i)/o*this.alphabet.length),a=this.alphabetContainer.nativeElement.getBoundingClientRect().right,s=this.alphabetContainer.nativeElement.getBoundingClientRect().left;return r<=this.alphabet.length&&r>0&&(this.exactX?t<a&&t>s&&(n=Math.ceil(r)):n=Math.ceil(r)),n},t.prototype.onLetterIndexChange=function(t){if(t){var e=this.validLetters?this.getClosestValidLetter(t):this.alphabet[t-1];this.letterChange.emit(e)}},t.prototype.getClosestValidLetter=function(t){var e=this.alphabet.map((function(t){return t.toLowerCase()})),n=this.validLetters.map((function(t){return t.toLowerCase()})).map((function(t){return e.indexOf(t)+1})).reduce((function(e,n){return Math.abs(n-t)<Math.abs(e-t)?n:e}));return this.alphabet[n-1]},t}();o.decorators=[{type:e.Component,args:[{selector:"app-alphabetical-scroll-bar",template:'<div\n class="container"\n #alphabetContainer\n (touchmove)="touchStart($event)"\n (touchstart)="touchMove($event)"\n (touchend)="touchEnd()"\n (mouseenter)="mouseEnter($event)"\n (mousemove)="mouseMove($event)"\n (mouseleave)="mouseLeave($event)"\n (click)="click($event)"\n>\n <div\n *ngFor="let letter of visibleLetters; let i = index"\n class="letter"\n [class.active]="isActive(i) && letterMagnification"\n [class.active-neighbor-1]="isActiveNeighbor1(i) && letterMagnification"\n [class.active-neighbor-2]="isActiveNeighbor2(i) && letterMagnification"\n [class.active-neighbor-3]="isActiveNeighbor3(i) && letterMagnification"\n id="{{ visibleLetters[i] }}"\n >\n <label>{{ letter }}</label>\n </div>\n</div>\n',styles:[".container{align-items:center;display:flex;flex-direction:column;font-size:70%;height:100%;justify-content:space-evenly;padding-left:30px;padding-right:10px;width:20px}.container .letter{pointer-events:none;position:relative}.container .letter label{left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);transition:font-size .1s}.container .letter.active{font-size:200%;font-weight:500}.container .letter.active-neighbor-1{font-size:175%}.container .letter.active-neighbor-2{font-size:150%}.container .letter.active-neighbor-3{font-size:125%}"]}]}],o.ctorParameters=function(){return[]},o.propDecorators={alphabetContainer:[{type:e.ViewChild,args:["alphabetContainer",{static:!0}]}],letterMagnification:[{type:e.Input}],exactX:[{type:e.Input}],alphabet:[{type:e.Input}],validLetters:[{type:e.Input}],navigateOnHover:[{type:e.Input}],letterChange:[{type:e.Output}],endTouch:[{type:e.Output}]};var r=function(){};r.decorators=[{type:e.NgModule,args:[{declarations:[o],imports:[n.CommonModule],exports:[o]}]}],t.AlphabeticalScrollBarComponent=o,t.AlphabeticalScrollBarModule=r,t.AlphabeticalScrollBarService=i,Object.defineProperty(t,"__esModule",{value:!0})}));
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("@angular/core"),require("@angular/common")):"function"==typeof define&&define.amd?define("alphabetical-scroll-bar",["exports","@angular/core","@angular/common"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self)["alphabetical-scroll-bar"]={},t.ng.core,t.ng.common)}(this,(function(t,e,n){"use strict";var i=function(){};i.ɵprov=e.ɵɵdefineInjectable({factory:function(){return new i},token:i,providedIn:"root"}),i.decorators=[{type:e.Injectable,args:[{providedIn:"root"}]}],i.ctorParameters=function(){return[]};var o=function(){function t(){this.letterMagnification=!1,this.exactX=!1,this.alphabet="abcdefghijklmnopqrstuvwxyz".toUpperCase().split(""),this.validLetters=void 0,this.navigateOnHover=!1,this.letterChange=new e.EventEmitter,this.endTouch=new e.EventEmitter,this.visibleLetters=[],this.active=!1,this.hidden=0}return t.prototype.ngOnInit=function(){var t=this,e=setInterval((function(){t.alphabetContainer.nativeElement.clientHeight>0&&(t.onResize(),window.addEventListener("resize",t.onResize.bind(t)),clearInterval(e))}),100)},t.prototype.ngOnDestroy=function(){window.removeEventListener("resize",this.onResize.bind(this))},t.prototype.onResize=function(){var t=this.alphabet,e=Number(window.getComputedStyle(document.body).getPropertyValue("font-size").match(/\d+/)[0]),n=this.alphabetContainer.nativeElement.clientHeight,i=Math.ceil(this.letterIndex*n/e);this.letterIndex=i,this.onLetterIndexChange(i);var o=this.alphabet.length;if(n/e<o){for(var r=o-Math.floor(n/e),a=this.getNumHiddenHalves(r,o)+1,s=this.alphabet.slice(0,Math.ceil(o/2)),l=this.alphabet.slice(Math.floor(o/2)).reverse(),c=0;c<a;c++)s=s.filter((function(t,e){return e%2==0})),l=l.filter((function(t,e){return e%2==0}));s=s.reduce((function(t,e,n){return n>0&&t.push("·"),t.push(e),t}),[]),l=l.reduce((function(t,e,n){return n>0&&t.push("·"),t.push(e),t}),[]),this.alphabet.length%2==0&&s.push("·"),t=s.concat(l.reverse())}this.visibleLetters=t},t.prototype.getNumHiddenHalves=function(t,e){return t>e/2?1+this.getNumHiddenHalves(t%(e/2),Math.ceil(e/2)):0},t.prototype.isActive=function(t){return this.letterIndex===t+1&&this.active},t.prototype.isActiveNeighbor1=function(t){return(t+1===this.letterIndex-1||t+1===this.letterIndex+1)&&this.active},t.prototype.isActiveNeighbor2=function(t){return(t+1===this.letterIndex-2||t+1===this.letterIndex+2)&&this.active},t.prototype.isActiveNeighbor3=function(t){return(t+1===this.letterIndex-3||t+1===this.letterIndex+3)&&this.active},t.prototype.touchStart=function(t){this.active=!0,this.touchMove(t)},t.prototype.touchMove=function(t){var e=t.touches[0].clientX,n=t.touches[0].clientY,i=this.getLetterIndexFromCoordinates(e,n);i&&this.onLetterIndexChange(i)},t.prototype.touchEnd=function(){this.endTouch.emit(),this.active=!1},t.prototype.mouseEnter=function(t){this.active=!0,this.mouseMove(t)},t.prototype.mouseMove=function(t){var e=t.clientX,n=t.clientY,i=this.getLetterIndexFromCoordinates(e,n);this.navigateOnHover&&i&&this.onLetterIndexChange(i)},t.prototype.mouseLeave=function(t){this.active=!1},t.prototype.click=function(t){var e=t.clientX,n=t.clientY,i=this.getLetterIndexFromCoordinates(e,n);this.onLetterIndexChange(i)},t.prototype.getLetterIndexFromCoordinates=function(t,e){var n=null,i=this.alphabetContainer.nativeElement.getBoundingClientRect().top,o=this.alphabetContainer.nativeElement.clientHeight,r=Math.ceil((e-i)/o*this.alphabet.length),a=this.alphabetContainer.nativeElement.getBoundingClientRect().right,s=this.alphabetContainer.nativeElement.getBoundingClientRect().left;return r<=this.alphabet.length&&r>0&&(this.exactX?t<a&&t>s&&(n=Math.ceil(r)):n=Math.ceil(r)),this.letterIndex=Math.round(n*(this.visibleLetters.length/this.alphabet.length)),n},t.prototype.onLetterIndexChange=function(t){if(t){var e=this.validLetters?this.getClosestValidLetter(t):this.alphabet[t-1];this.letterChange.emit(e)}},t.prototype.getClosestValidLetter=function(t){var e=this.alphabet.map((function(t){return t.toLowerCase()})),n=this.validLetters.map((function(t){return t.toLowerCase()})).map((function(t){return e.indexOf(t)+1})).reduce((function(e,n){return Math.abs(n-t)<Math.abs(e-t)?n:e}));return this.alphabet[n-1]},t}();o.decorators=[{type:e.Component,args:[{selector:"app-alphabetical-scroll-bar",template:'<div\n class="container"\n #alphabetContainer\n (touchmove)="touchStart($event)"\n (touchstart)="touchMove($event)"\n (touchend)="touchEnd()"\n (mouseenter)="mouseEnter($event)"\n (mousemove)="mouseMove($event)"\n (mouseleave)="mouseLeave($event)"\n (click)="click($event)"\n>\n <div\n *ngFor="let letter of visibleLetters; let i = index"\n class="letter"\n [class.active]="isActive(i) && letterMagnification"\n [class.active-neighbor-1]="isActiveNeighbor1(i) && letterMagnification"\n [class.active-neighbor-2]="isActiveNeighbor2(i) && letterMagnification"\n [class.active-neighbor-3]="isActiveNeighbor3(i) && letterMagnification"\n id="{{ visibleLetters[i] }}"\n >\n <label>{{ letter }}</label>\n </div>\n</div>\n',styles:[".container{align-items:center;display:flex;flex-direction:column;font-size:70%;height:100%;justify-content:space-evenly;padding-left:30px;padding-right:10px;width:20px}.container .letter{pointer-events:none;position:relative}.container .letter label{left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);transition:font-size .1s}.container .letter.active{font-size:200%;font-weight:500}.container .letter.active-neighbor-1{font-size:175%}.container .letter.active-neighbor-2{font-size:150%}.container .letter.active-neighbor-3{font-size:125%}"]}]}],o.ctorParameters=function(){return[]},o.propDecorators={alphabetContainer:[{type:e.ViewChild,args:["alphabetContainer",{static:!0}]}],letterMagnification:[{type:e.Input}],exactX:[{type:e.Input}],alphabet:[{type:e.Input}],validLetters:[{type:e.Input}],navigateOnHover:[{type:e.Input}],letterChange:[{type:e.Output}],endTouch:[{type:e.Output}]};var r=function(){};r.decorators=[{type:e.NgModule,args:[{declarations:[o],imports:[n.CommonModule],exports:[o]}]}],t.AlphabeticalScrollBarComponent=o,t.AlphabeticalScrollBarModule=r,t.AlphabeticalScrollBarService=i,Object.defineProperty(t,"__esModule",{value:!0})}));
//# sourceMappingURL=alphabetical-scroll-bar.umd.min.js.map

@@ -126,3 +126,2 @@ import { Component, EventEmitter, Input, Output, ViewChild, } from '@angular/core';

const newLetterIndex = this.getLetterIndexFromCoordinates(x, y);
this.letterIndex = Math.round(newLetterIndex * (this.visibleLetters.length / this.alphabet.length));
if (!this.navigateOnHover)

@@ -161,2 +160,3 @@ return;

}
this.letterIndex = Math.round(letterIndex * (this.visibleLetters.length / this.alphabet.length));
return letterIndex;

@@ -200,2 +200,2 @@ }

};
//# 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alphabet2.reduce((prev, curr, i) => {\n        if (i > 0) {\n          prev.push('·');\n        }\n        prev.push(curr);\n        return prev;\n      }, []);\n\n      if (this.alphabet.length % 2 === 0) alphabet1.push('·');\n\n      newAlphabet = alphabet1.concat(alphabet2.reverse());\n    }\n\n    this.visibleLetters = newAlphabet;\n  }\n\n  getNumHiddenHalves(numHiddenLetters: number, total: number) {\n    if (numHiddenLetters > total / 2) {\n      return (\n        1 +\n        this.getNumHiddenHalves(\n          numHiddenLetters % (total / 2),\n          Math.ceil(total / 2)\n        )\n      );\n    }\n    return 0;\n  }\n\n  isActive(i: number) {\n    return this.letterIndex === i + 1 && this.active;\n  }\n\n  isActiveNeighbor1(i: number) {\n    return (\n      (i + 1 === this.letterIndex - 1 || i + 1 === this.letterIndex + 1) &&\n      this.active\n    );\n  }\n\n  isActiveNeighbor2(i: number) {\n    return (\n      (i + 1 === this.letterIndex - 2 || i + 1 === this.letterIndex + 2) &&\n      this.active\n    );\n  }\n\n  isActiveNeighbor3(i: number) {\n    return (\n      (i + 1 === this.letterIndex - 3 || i + 1 === this.letterIndex + 3) &&\n      this.active\n    );\n  }\n\n  //*** Touch Events ***//\n  touchStart(event: any) {\n    this.active = true;\n    this.touchMove(event);\n  }\n\n  //updates on every form of touch\n  touchMove(event: any) {\n    const x = event.touches[0].clientX;\n    const y = event.touches[0].clientY;\n\n    const newLetterIndex = this.getLetterIndexFromCoordinates(x, y);\n\n    if (newLetterIndex) this.onLetterIndexChange(newLetterIndex);\n  }\n\n  touchEnd() {\n    this.endTouch.emit();\n    this.active = false;\n  }\n\n  //*** End Touch Events ***//\n\n  //*** Mouse Events ***//\n\n  mouseEnter(event: any) {\n    this.active = true;\n    this.mouseMove(event);\n  }\n\n  mouseMove(event: any) {\n    const x = event.clientX;\n    const y = event.clientY;\n\n    const newLetterIndex = 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{\n  Component,\n  ElementRef,\n  EventEmitter,\n  Input,\n  OnDestroy,\n  OnInit,\n  Output,\n  ViewChild,\n} from '@angular/core';\n\n@Component({\n  selector: 'app-alphabetical-scroll-bar',\n  templateUrl: './alphabetical-scroll-bar.component.html',\n  styleUrls: ['./alphabetical-scroll-bar.component.scss'],\n})\nexport class AlphabeticalScrollBarComponent implements OnInit, OnDestroy {\n  @ViewChild('alphabetContainer', { static: true })\n  alphabetContainer: ElementRef;\n\n  @Input()\n  letterMagnification: boolean = false;\n\n  @Input()\n  exactX: boolean = false;\n\n  @Input()\n  alphabet: Array<string> = 'abcdefghijklmnopqrstuvwxyz'\n    .toUpperCase()\n    .split('');\n\n  @Input()\n  validLetters: Array<string> = undefined;\n\n  @Input()\n  navigateOnHover: boolean = false;\n\n  @Output()\n  letterChange: EventEmitter<string> = new EventEmitter<string>();\n\n  @Output()\n  endTouch: EventEmitter<void> = new EventEmitter<void>();\n\n  visibleLetters: Array<string> = [];\n  letterIndex: number;\n  active: boolean = false;\n\n  hidden: number = 0;\n\n  constructor() {}\n\n  ngOnInit() {\n    let interval = setInterval(() => {\n      if (this.alphabetContainer.nativeElement.clientHeight > 0) {\n        this.onResize();\n        window.addEventListener('resize', this.onResize.bind(this));\n        clearInterval(interval);\n      }\n    }, 100);\n  }\n\n  ngOnDestroy() {\n    window.removeEventListener('resize', this.onResize.bind(this));\n  }\n\n  onResize() {\n    let newAlphabet = this.alphabet;\n\n    const letterSize = Number(\n      window\n        .getComputedStyle(document.body)\n        .getPropertyValue('font-size')\n        .match(/\\d+/)[0]\n    );\n    const height = this.alphabetContainer.nativeElement.clientHeight;\n\n    const newLetterIndex = Math.ceil((this.letterIndex * height) / letterSize);\n    this.letterIndex = newLetterIndex;\n    this.onLetterIndexChange(newLetterIndex);\n\n    const numLetters = this.alphabet.length;\n    if (height / letterSize < numLetters) {\n      const numHiddenLetters = numLetters - Math.floor(height / letterSize);\n\n      //determine how many letters to hide\n      const hiddenHalves =\n        this.getNumHiddenHalves(numHiddenLetters, numLetters) + 1;\n\n      //split alphabet into two halves\n      let alphabet1 = this.alphabet.slice(0, Math.ceil(numLetters / 2));\n      let alphabet2 = this.alphabet.slice(Math.floor(numLetters / 2)).reverse();\n\n      for (let i = 0; i < hiddenHalves; i++) {\n        alphabet1 = alphabet1.filter((letter, index) => {\n          return index % 2 === 0;\n        });\n        alphabet2 = alphabet2.filter((letter, index) => {\n          return index % 2 === 0;\n        });\n      }\n\n      //insert dots between letters\n      alphabet1 = alphabet1.reduce((prev, curr, i) => {\n        if (i > 0) {\n          prev.push('·');\n        }\n        prev.push(curr);\n        return prev;\n      }, []);\n      //insert dots between letters\n      alphabet2 = alphabet2.reduce((prev, curr, i) => {\n        if (i > 0) {\n          prev.push('·');\n        }\n        prev.push(curr);\n        return prev;\n      }, []);\n\n      if (this.alphabet.length % 2 === 0) alphabet1.push('·');\n\n      newAlphabet = alphabet1.concat(alphabet2.reverse());\n    }\n\n    this.visibleLetters = newAlphabet;\n  }\n\n  getNumHiddenHalves(numHiddenLetters: number, total: number) {\n    if (numHiddenLetters > total / 2) {\n      return (\n        1 +\n        this.getNumHiddenHalves(\n          numHiddenLetters % (total / 2),\n          Math.ceil(total / 2)\n        )\n      );\n    }\n    return 0;\n  }\n\n  isActive(i: number) {\n    return this.letterIndex === i + 1 && this.active;\n  }\n\n  isActiveNeighbor1(i: number) {\n    return (\n      (i + 1 === this.letterIndex - 1 || i + 1 === this.letterIndex + 1) &&\n      this.active\n    );\n  }\n\n  isActiveNeighbor2(i: number) {\n    return (\n      (i + 1 === this.letterIndex - 2 || i + 1 === this.letterIndex + 2) &&\n      this.active\n    );\n  }\n\n  isActiveNeighbor3(i: number) {\n    return (\n      (i + 1 === this.letterIndex - 3 || i + 1 === this.letterIndex + 3) &&\n      this.active\n    );\n  }\n\n  //*** Touch Events ***//\n  touchStart(event: any) {\n    this.active = true;\n    this.touchMove(event);\n  }\n\n  //updates on every form of touch\n  touchMove(event: any) {\n    const x = event.touches[0].clientX;\n    const y = event.touches[0].clientY;\n\n    const newLetterIndex = this.getLetterIndexFromCoordinates(x, y);\n\n    if (newLetterIndex) this.onLetterIndexChange(newLetterIndex);\n  }\n\n  touchEnd() {\n    this.endTouch.emit();\n    this.active = false;\n  }\n\n  //*** End Touch Events ***//\n\n  //*** Mouse Events ***//\n\n  mouseEnter(event: any) {\n    this.active = true;\n    this.mouseMove(event);\n  }\n\n  mouseMove(event: any) {\n    const x = event.clientX;\n    const y = event.clientY;\n\n    const newLetterIndex = this.getLetterIndexFromCoordinates(x, y);\n\n    if (!this.navigateOnHover) return;\n\n    if (newLetterIndex) this.onLetterIndexChange(newLetterIndex);\n  }\n\n  mouseLeave(event: any) {\n    this.active = false;\n  }\n\n  click(event: any) {\n    const x = event.clientX;\n    const y = event.clientY;\n\n    const newLetterIndex = this.getLetterIndexFromCoordinates(x, y);\n\n    this.onLetterIndexChange(newLetterIndex);\n  }\n\n  //*** End Mouse Events ***//\n\n  //*** Logic ***//\n\n  private getLetterIndexFromCoordinates(x: number, y: number) {\n    let letterIndex = null;\n    const aTop =\n      this.alphabetContainer.nativeElement.getBoundingClientRect().top;\n    const aHeight = this.alphabetContainer.nativeElement.clientHeight;\n    const index = Math.ceil(((y - aTop) / aHeight) * this.alphabet.length);\n    const aRightX =\n      this.alphabetContainer.nativeElement.getBoundingClientRect().right;\n    const aLeftX =\n      this.alphabetContainer.nativeElement.getBoundingClientRect().left;\n\n    if (index <= this.alphabet.length && index > 0) {\n      if (this.exactX) {\n        if (x < aRightX && x > aLeftX) {\n          letterIndex = Math.ceil(index);\n        }\n      } else {\n        letterIndex = Math.ceil(index);\n      }\n    }\n    this.letterIndex = Math.round(\n      letterIndex * (this.visibleLetters.length / this.alphabet.length)\n    );\n\n    return letterIndex;\n  }\n\n  //emits the letter change\n  private onLetterIndexChange(value: number) {\n    if (!value) return;\n    const letter = this.validLetters\n      ? this.getClosestValidLetter(value)\n      : this.alphabet[value - 1];\n    this.letterChange.emit(letter);\n  }\n\n  //gets closest letter\n  private getClosestValidLetter(letterIndex: number) {\n    const lowercaseAlphabet = this.alphabet.map((letter) =>\n      letter.toLowerCase()\n    );\n    const lowercaseValidLetters = this.validLetters.map((letter) =>\n      letter.toLowerCase()\n    );\n    const validLettersAsNumbers = lowercaseValidLetters.map(\n      (letter) => lowercaseAlphabet.indexOf(letter) + 1\n    );\n\n    const closest = validLettersAsNumbers.reduce((prev, curr) =>\n      Math.abs(curr - letterIndex) < Math.abs(prev - letterIndex) ? curr : prev\n    );\n    return this.alphabet[closest - 1];\n  }\n}\n"]}

@@ -139,3 +139,2 @@ import { ɵɵdefineInjectable, Injectable, EventEmitter, Component, ViewChild, Input, Output, NgModule } from '@angular/core';

const newLetterIndex = this.getLetterIndexFromCoordinates(x, y);
this.letterIndex = Math.round(newLetterIndex * (this.visibleLetters.length / this.alphabet.length));
if (!this.navigateOnHover)

@@ -174,2 +173,3 @@ return;

}
this.letterIndex = Math.round(letterIndex * (this.visibleLetters.length / this.alphabet.length));
return letterIndex;

@@ -176,0 +176,0 @@ }

{
"name": "alphabetical-scroll-bar",
"license": "MIT",
"version": "2.0.0",
"version": "2.0.1",
"peerDependencies": {

@@ -6,0 +6,0 @@ "@angular/common": "^10.1.6",

# Alphabetical Scroll Bar
This [Github](https://github.com/mooalot/alphabetical-scroll-bar) project shows an implementation of the `alphabetical-scroll-bar` in angular using Ionic Framework. The example can be found in `projects/example`. Below are images of what it can look like.
This project contains the source code for the `alphabetical-scroll-bar` and an example of how it is used in an ionic project (`projects/example`). Here are the basics of how it works, but I strongly suggest looking through the example for how to use it.
Inactive Scroll Bar | Active Scroll Bar
:-------------------------:|:-------------------------:
<img src="https://github.com/mooalot/alphabetical-scroll-bar/blob/main/projects/example/src/assets/image2.PNG" width="300"> | <img src="https://github.com/mooalot/alphabetical-scroll-bar/blob/main/projects/example/src/assets/image.PNG" width="300">
| Inactive Scroll Bar | Active Scroll Bar |
| :-------------------------------------------------------------------------------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------: |
| <img src="https://github.com/mooalot/alphabetical-scroll-bar/blob/main/projects/example/src/assets/image2.PNG" width="300"> | <img src="https://github.com/mooalot/alphabetical-scroll-bar/blob/main/projects/example/src/assets/image.PNG" width="300"> |
## Version 2.0.0 and up
The following is how to use the `alphabetical-scroll-bar`.
New features:
- You can now use your own custom alphabet.
- Added support for desktop (see usage for more info).
- Scroll bar now supports all screen sizes by adding dividers between the letters as the screen size gets smaller.
## Support
| Platform | Support |
| -------- | ------- |
| iOS | Yes |
| Android | Yes |
| Web | Yes |
## Usage

@@ -19,2 +32,3 @@

```
Import in your desired `module.ts`

@@ -37,7 +51,8 @@

```
<app-alphabetical-scroll
[letterMagnification]="Boolean"
[exactX]="Boolean"
<app-alphabetical-scroll
[letterMagnification]="Boolean"
[exactX]="Boolean"
[customAlphabet]="Array<string>"
[validLetters]="Array<string>"
[validLetters]="Array<string>"
[navigateOnHover]="Boolean"
(letterChange)="EventEmitter<string>"

@@ -48,7 +63,7 @@ (endTouch)="EventEmitter<void>">

**letterMagnification** defaults to `true`. This feature will create a magnification effect on the alphabetical scroll bar when the user touches it.
**letterMagnification** defaults to `true`. This feature will create a magnification effect on the alphabetical scroll bar when the user touches it or hovers over it.
**exactX** defaults to `false`. When `false`, this means the user does not have to be accurate along the x direction of the screen (after they have touched the scroll bar), meaning they can slide their finger freely along the x axis while still changing the scroll value. If set to `true`, the user will have to remain inside the scroll bar to continue navigating (I think false gives it a smoother feel).
**exactX** defaults to `false`. When `false`, this means the user does not have to be accurate along the x direction of the screen (after they have touched the scroll bar), meaning they can slide their finger freely along the x axis while still changing the scroll value. If set to `true`, the user will have to remain inside the scroll bar to continue navigating (I think false gives it a smoother feel). (MOBILE ONLY)
**customAlphabet** allows you to enter your own custom version of the alphabet. It defaults to an all caps alphabet. If the length is not exactly 26 characters, it will default to the all caps alphabet as well.
**alphabet** allows you to enter your own custom version of the alphabet. It defaults to an all caps alphabet.

@@ -59,6 +74,8 @@ **validLetters** is an array of the possible letters that are available in the scrollable content. For example, if you only have 5 different letter dividers `A`, `D`, `F`, `I`, and `R`, you would want to pass these into `validLetters`. If you did not, when you tap on `Z` in the alphabetical scroll bar, nothing will happen. If you do include `validLetters`, your view would be taken to the next closest letter, which in this case is `R`. This is not a requirement, but it will make your alphabetical scroll bar much more robust.

**endTouch** is an eventEmitter that will emit when the user releases their finger from the scroll bar. This is used to stop any unwanted scroll glitches while the user is using the alphabetical scroll bar. See example for more information.
**endTouch** is an eventEmitter that will emit when the user releases their finger from the scroll bar. This is used to stop any unwanted scroll glitches while the user is using the alphabetical scroll bar. See example for more information. (MOBILE ONLY)
*You can see how all of these are used in the example project on [Github](https://github.com/mooalot/alphabetical-scroll-bar).*
_You can see how all of these are used in the `projects/example` folder._
*Also note that the `app-alphabetical-scroll` element must have a high z-index to be above dividers and other elements.
**navigateOnHover** defaults to `false`. This means that the user will have to tap on the scroll bar to navigate to a new letter. If set to `true`, the user will be able to navigate to a new letter by hovering over the scroll bar. (DESKTOP ONLY)
\*Also note that the `app-alphabetical-scroll` element must have a high z-index to be above dividers and other elements.

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