Update the theme of angular library upon import

I am seeking information on how to create a common Angular library with custom styled components, such as size and font. My goal is to import this library into two separate projects, which I have successfully done so far.

However, now I wish for each project to have its own unique color, font, and icon themes. To accomplish this, I need a method to define the theme in the parent projects and apply it to the styling of the library components.

This approach allows all components in the library to remain consistent across different applications while adapting to their individual styles.

Is there a way to achieve this functionality?

Best regards, P90K

javascriptcssangularsass

Answer №1

Developing an Angular Library

If you're looking to create your own Angular library, you can find detailed instructions here. Remember to publish it on npm and integrate it into your projects.

Crafting the Style of Your Library

1. Customize Style Encapsulation with ViewEncapsulation

To learn more, visit this link.

The ViewEncapsulation in Angular offers various options for encapsulating templates and styles within Components. By utilizing ViewEncapsulation.None, you expose your styles to external components.

import { Component, ViewEncapsulation } from '@angular/core';

@Component({
...
  encapsulation: ViewEncapsulation.None,
...
})

Note: This approach allows for easier CSS overrides but requires careful use of selectors.

2. Leveraging :host

You can delve deeper into this topic by reading further insights.

The :host selector offers a way to modify CSS properties without interfering with view encapsulations.

This CSS pseudo-class targets the shadow host element of the shadow DOM it's contained within.

Incorporating the Lib into your Parent Template

<your-component class="custom-component-cls"></your-component>

Applying Lib Styles in your Parent CSS

:host{
    ::ng-deep .custom-component-cls{
        color: white;
    }
}

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