I have an angular 4 application where I have the global styles and scripts in angular-cli.json. Then I worked separately on the Landing page. After I turn the landing page into an angular component, I add all its styles in angular-cli.json as well. And now my landing page's bootstrap conflicts with global bootstrap in node_modules and my application breaks.
Currently angular-cli.json looks like this:
"styles": [
"../node_modules/bootstrap/dist/css/bootstrap.min.css",
"./dist/css/landing/bootstrap.min.css",
"./dist/css/landing/font-awesome.min.css",
"styles.css",
"./dist/css/AdminLTE.min.css",
"./dist/css/skins/_all-skins.min.css",
"../node_modules/froala-editor/css/froala_editor.pkgd.min.css",
"../node_modules/froala-editor/css/froala_style.min.css"
],
This is in landing.component.ts:
import { Component, OnInit } from '#angular/core';
#Component({
selector: 'app-landing',
templateUrl: './landing.component.html',
styleUrls: ['./landing.component.css']
})
export class LandingComponent implements OnInit {
constructor() { }
ngOnInit() { }
}
I am almost missing my deadline, I can not resolve the conflicts between two huge css files. I was wondering if I could keep my Landing Page styles separated from application styles. Any help will be largely appreciated. Thank you.
You could try encapsulate your landing page as follows.
ViewEncapsulation.Native will wrap your component and its styles within a shadow root. Change your component style file to scss and import those styles in component style file and delete them from .angular-cli.json.
#Component({
selector: 'app-landing',
templateUrl: './landing.component.html',
styleUrls: ['./landing.component.scss'],
encapsulation: ViewEncapsulation.Native
})
export class LandingComponent implements OnInit {
constructor() { }
ngOnInit() { }
}
landing.component.scss
#import '<path-to-dist>/dist/css/landing/bootstrap.min.css';
#import '<path-to-dist>/dist/css/landing/font-awesome.min.css';
When you inspect DOM, you'll see app-landing as encapsulated.
Edit
Alternatively, you can use ViewEncapsulation.Emulated which is default (you do not have to set it within metadata). What this will do is to create custom attributes with all the styles and add those attributes to your markup as well. Shadow DOM may not be supported in some browsers. Try both and if Emulated works for you, use that.
Related
I selected the scss option on a new Ionic Angular app. It's html container holds three tab pages. The scss stylesheet in the container component controls the styles for all pages. The global.sccs only contains imports, no styling and doesn't import the container's scss.. The container component implements OnInit.The stylesheets in the 3 tab page components are created empty.
I cannot change the style of any of the 3 tab pages by adding styles to their stylesheets. It continues to use the container's stylesheet. The selector for the style is in the container's html:
explore-container.component.html
<div id="container">
<strong>{{ name }}</strong>
...
</div>
The explore-container.component.ts file:
import { Component, OnInit, Input } from '#angular/core';
#Component({
selector: 'app-explore-container',
templateUrl: './explore-container.component.html',
styleUrls: ['./explore-container.component.scss'],
})
export class ExploreContainerComponent implements OnInit {
#Input() name: string;
constructor() { }
ngOnInit() {}
}
The tab page html uses the selector for the container component:
tab1.page.html
...
<app-explore-container name="Tab 1 page"></app-explore-container>
</ion-content>
The tab1.page.ts file:
import { Component } from '#angular/core';
#Component({
selector: 'app-tab1',
templateUrl: 'tab1.page.html',
styleUrls: ['tab1.page.scss']
})
export class Tab1Page {
constructor() {}
}
I have reviewed the docs about external stylesheets and encapsulation but I'm still lost. Why can't I just add a style to the scss in the tab page's own presently empty scss file? Eg., why doesn't inserting styles into the page component's scss:
tab1.page.scss
#container strong {
font-size: 40px;
}
override this in the explore-container.component.scss?
#container strong {
font-size: 20px;
}
Am I missing an import somewhere? If so, where?
Is it possible to define a style in e.g. the styles.scss that applies to all Components selectors
( app-componentA, app-componentB ...) ?
I know I could add the style to each selector individually but I'm worried that it will be forgotten in the future when a new component is added...
In short, I don't want to duplicate the code every time.
Any ideas?
EDIT:
I'm looking for a "css-query" which addresses all Angular components. So some kind of wildcard like
styles.scss
.app* {
margin-left: 20px; // will be applied to all DOM elements starting with app
}
In Your component
#Component({
selector: 'compA',
templateUrl: './compA.component.html',
styleUrls: ['./compA.component.css'],
encapsulation: ViewEncapsulation.None
})
try without incapsulation:
#Component({encapsulation: ViewEncapsulation.None})
OR turn off encapsulation globally
OR add some class for all components like compA & compB
OR in style.scss write compA, compB { /* some stiles */ }
I am trying to override the look of the Datepicker from ng-bootstrap. I can change the attributes in the browser with my own colors, but the selectors won't work. Am I even able to access the CSS? I can't find it in any sub-directories.
you need use encapsulation:ViewEncapsulation.None to override the style
#Component({
selector: 'ngbd-datepicker-basic',
templateUrl: './datepicker-basic.html',
styles:[
`.ngb-dp-arrow-btn
{
color:red;
}
`
],
encapsulation:ViewEncapsulation.None
})
Be carefully, ViewEncapsulation.None, make that the .css override all the .css to the whole application (create a tag <styles> at first of the index.html=
I have a component page and corresponding style sheet, however the classes in the component.scss dosen't apply to the page. There are no errors, I am still wondering why?
This is my product-detailpage.component.html
<div>
<h1>Product Detail Page</h1>
</div>
This is the .ts file
import { Component, OnInit } from '#angular/core';
import {ActivatedRoute} from '#angular/router';
import {ProductdetailService} from '../productdetail.service';
#Component({
selector: 'app-product-detailpage',
templateUrl: './product-detailpage.component.html',
styleUrls: ['./product-detailpage.component.scss']
})
export class ProductDetailpageComponent implements OnInit {
constructor(private route: ActivatedRoute, private productData: ProductdetailService) {
this.route.params.subscribe(params => console.log(params));
}
ngOnInit() {
}
}
This is the .scss file
body{color:Red !important}
app-product-detailpage{
h1{color:red !important}
}
However one thing I noticed was if I make changes to the global styles.css it works fine. just to check I changed the body color to green and it works.
My angular app is configured to work with scss. what could be the reason? can some one suggest?
Your SCSS won't work for your HTML file product-detailpage.component.html.
The reason is Angular uses shadow DOM for components. That means the tags <body> and <app-product-detailpage> are nowhere to be found in your component.
As per the documentation, The style specified in the component can only be applied to its template, which excludes the component.
This is the reason why your styles are not working on the component from component's style.scss but are working fine from global style sheet.
One way of doing it is to use :host pseudo selector as per this documentation which allows to add styles on the container in which component is placed.
The documentation says -
The :host selector is the only way to target the host element. You can't reach the host element from inside the component with other selectors because it's not part of the component's own template. The host element is in a parent component's template.
Because default css encapsulation in Angular is Emulated(ViewEncapsulation.Emulated) so Angular will render out like below:
input[_ngcontent-c0] {
border-radius: 5px;
}
So if you want set style to the currently component, you can use Native option.
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css'],
encapsulation : ViewEncapsulation.Native
})
It will render like as:
input {
border-radius: 5px;
}
But finally I suggest you use global scss file to define style of <web component>.
I working in an Angular 2 application. I'm very new to Angular. I'm wondering why my CSS is not working.
I have three files:
landing.component.html
landing.component.scss
landing.component.ts
landing.component.html looks like this:
<div class="c-nav__left">
<img src="/public/imgs/logo#2x.png" width="145px" height="64px" />
<span class="_navbarLogoText">Risk Alive</span>
</div>
Welcome to the landing page!
There's a couple style class I'm referencing there: c-nav__left and _navbarLogoText.
Now here's landing.component.scss:
#import "../../../scss/base.scss";
#import "../../../scss/navbar.style.scss";
All that landing.component.scss does is import other scss files from elsewhere in the application. The class seen in landing.component.html are in navbar.style.scss.
Then there's landing.component.ts:
import { Cookie } from 'ng2-cookies/ng2-cookies';
import { Component } from '#angular/core';
import { ModalService } from '../../../app/common/services/modal.service';
import { Subscription } from 'rxjs/Subscription';
#Component({
templateUrl: './landing.component.html',
styles: [require('./landing.component.scss'), require('../../../scss/navbar.style.scss') ],
providers: [ ModalService ],
})
export class LandingComponent {
....
}
As you can see, I'm requiring both landing.component.scss and navbar.style.scss.
Yes, navbar.style.scss is being referenced twice. I'm trying both approaches: referencing it by an import statement in the scss files itself and also by a require statement in the typescript file.
But neither of these work. I do not see my styles on the page.
Can anyone suggest what I'm doing wrong? Thank you.
You shouldn't use require in the styles param to the #Component decorator - instead use styleUrls:
styleUrls: ['./landing.component.scss']