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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | 92x 92x 92x 92x 92x 92x 92x 92x 92x 92x 92x 23x 23x 23x 23x 23x 92x 21x 92x 2x 21x 21x 21x 16x 16x 5x 5x 92x 21x 184x 92x | import { Directive, ElementRef, EventEmitter, HostListener, Input, OnInit, Output } from '@angular/core'; import { NgControl } from '@angular/forms'; import * as _ from 'lodash'; import { DimlessBinaryPipe } from '../pipes/dimless-binary.pipe'; import { FormatterService } from '../services/formatter.service'; @Directive({ selector: '[cdDimlessBinary]' }) export class DimlessBinaryDirective implements OnInit { @Output() ngModelChange: EventEmitter<any> = new EventEmitter(); /** * Minimum size in bytes. * If user enter a value lower than <minBytes>, * the model will automatically be update to <minBytes>. * * If <roundPower> is used, this value should be a power of <roundPower>. * * Example: * Given minBytes=4096 (4KiB), if user type 1KiB, then model will be updated to 4KiB */ @Input() minBytes: number; /** * Maximum size in bytes. * If user enter a value greater than <maxBytes>, * the model will automatically be update to <maxBytes>. * * If <roundPower> is used, this value should be a power of <roundPower>. * * Example: * Given maxBytes=3145728 (3MiB), if user type 4MiB, then model will be updated to 3MiB */ @Input() maxBytes: number; /** * Value will be rounded up the nearest power of <roundPower> * * Example: * Given roundPower=2, if user type 7KiB, then model will be updated to 8KiB * Given roundPower=2, if user type 5KiB, then model will be updated to 4KiB */ @Input() roundPower: number; /** * Default unit that should be used when user do not type a unit. * By default, "MiB" will be used. * * Example: * Given defaultUnit=null, if user type 7, then model will be updated to 7MiB * Given defaultUnit=k, if user type 7, then model will be updated to 7KiB */ @Input() defaultUnit: string; private el: HTMLInputElement; constructor( private elementRef: ElementRef, private control: NgControl, private dimlessBinaryPipe: DimlessBinaryPipe, private formatter: FormatterService ) { this.el = this.elementRef.nativeElement; } ngOnInit() { this.setValue(this.el.value); } setValue(value) { if (/^[\d.]+$/.test(value)) { value += this.defaultUnit || 'm'; } const size = this.formatter.toBytes(value); const roundedSize = this.round(size); this.el.value = this.dimlessBinaryPipe.transform(roundedSize); if (size !== null) { this.ngModelChange.emit(this.el.value); this.control.control.setValue(this.el.value); } else { this.ngModelChange.emit(null); this.control.control.setValue(null); } } round(size) { if (size !== null && size !== 0) { if (!_.isUndefined(this.minBytes) && size < this.minBytes) { return this.minBytes; } if (!_.isUndefined(this.maxBytes) && size > this.maxBytes) { return this.maxBytes; } if (!_.isUndefined(this.roundPower)) { const power = Math.round(Math.log(size) / Math.log(this.roundPower)); return Math.pow(this.roundPower, power); } } return size; } @HostListener('blur', ['$event.target.value']) onBlur(value) { this.setValue(value); } } |