61 lines
2.2 KiB
TypeScript
61 lines
2.2 KiB
TypeScript
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// (C) Copyright 2015 Martin Dougiamas
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { Component, Input, OnChanges, SimpleChange, ChangeDetectionStrategy } from '@angular/core';
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import { DomSanitizer, SafeStyle } from '@angular/platform-browser';
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/**
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* Component to show a progress bar and its value.
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*
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* Example usage:
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* <core-progress-bar [progress]="percentage"></core-progress-bar>
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*/
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@Component({
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selector: 'core-progress-bar',
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templateUrl: 'progress-bar.html',
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changeDetection: ChangeDetectionStrategy.OnPush
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})
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export class CoreProgressBarComponent implements OnChanges {
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@Input() progress: number|string; // Percentage from 0 to 100.
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@Input() text?: string; // Percentage in text to be shown at the right. If not defined, progress will be used.
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width: SafeStyle;
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protected textSupplied = false;
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constructor(private sanitizer: DomSanitizer) {}
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/**
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* Detect changes on input properties.
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*/
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ngOnChanges(changes: {[name: string]: SimpleChange}) {
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if (changes.text && typeof changes.text.currentValue != 'undefined') {
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// User provided a custom text, don't use default.
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this.textSupplied = true;
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}
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if (changes.progress) {
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// Progress has changed.
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this.width = this.sanitizer.bypassSecurityTrustStyle(this.progress + '%');
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if (typeof this.progress == 'string') {
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this.progress = parseInt(this.progress, 10);
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}
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if (this.progress < 0 || isNaN(this.progress)) {
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this.progress = -1;
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} else if (!this.textSupplied) {
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this.text = String(this.progress);
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}
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}
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}
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}
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