Angular2 component shows slim loading bar at the top of the page. Uses Observable.interval() instead of setInterval() to avoid pending macrotask in Angular.
npm install ng2-slim-loading-bar-observables
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_Some of these APIs and Components are not final and are subject to change!_
This is a fork of https://github.com/akserg/ng2-slim-loading-bar
``sh`
npm install ng2-slim-loading-bar-observables --save
Online demo available here
If you use SystemJS to load your files, you might have to update your config:
`js`
System.config({
map: {
'ng2-slim-loading-bar': 'node_modules/ng2-slim-loading-bar/bundles/index.umd.js'
}
});
#### 1. Update the markup
- Import the style.css into your web page
- Add tag in template of your application component.
#### 2. Import the SlimLoadingBarModule
Import in the NgModule of your application. forRoot
The method is a convention for modules that provide a singleton service.
`ts
import {BrowserModule} from "@angular/platform-browser";
import {NgModule} from '@angular/core';
import {SlimLoadingBarModule} from 'ng2-slim-loading-bar';
@NgModule({
imports: [
BrowserModule,
SlimLoadingBarModule.forRoot()
],
bootstrap: [AppComponent]
})
export class AppModule {
}
`
If you have multiple NgModules and you use one as a shared NgModule (that you import in all of your other NgModules),
don't forget that you can use it to export the SlimLoadingBarModule that you imported in order to avoid having to import it multiple times.
`ts`
@NgModule({
imports: [
BrowserModule,
SlimLoadingBarModule.forRoot()
],
exports: [BrowserModule, SlimLoadingBarModule],
})
export class SharedModule {
}
#### 3. Use the SlimLoadingBarService for your applicationSlimLoadingBarService
- Import from ng2-slim-loading-bar in your application code:
`js
import {Component} from '@angular/core';
import {SlimLoadingBarService} from 'ng2-slim-loading-bar';
@Component({
selector: 'app',
template:
})
export class AppComponent {
constructor(private slimLoadingBarService: SlimLoadingBarService) { }
startLoading() {
this.slimLoadingBarService.start(() => {
console.log('Loading complete');
});
} stopLoading() {
this.slimLoadingBarService.stop();
}
completeLoading() {
this.slimLoadingBarService.complete();
}
}
#### 3. Customize the the
for your application
You can use the following properties to customize the ng2-slim-loading-bar component in your template:
- color - The color of loading bar. Default is firebrick. Any CSS compatible value.
- height - The height of loading bar. Default value is 2px.
- show - The flag helps hide and show the loading bar. Devault value is true.Example:
#### 4. Manage the loading bar
You can use the following properties to customize the SlimLoadingBar via instance of SlimLoadingBarService:
-
- The color of loading bar.
- height - The height of loading bar.
- visible - The flag helps hide and show the loading bar.You can use the following methods to control the SlimLoadingBar via instance of SlimLoadingBarService:
-
start - Start the loading progress. Use the callback function as an parameter to listed the complete event.
- stop - Stop the loading progress. This method pause the current position of loading progress.
- reset- Reset the position of loading progress to 0.
- complete` - Set the progress to 100% and hide the progress bar.