Angular 5 Material Snackbar panelClass 配置 [英] Angular 5 Material Snackbar panelClass config

问题描述

我正在尝试将 panelClass 配置添加到 Angular Material Snackbar.

I am trying to add a panelClass config to the Angular Material Snackbar.

我按照官方网站的文档编写了以下代码.

I wrote the following code, by following documentations from the official websites.

import { Component, OnInit } from '@angular/core';
import { MatSnackBar, MatSnackBarConfig } from "@angular/material";
import { Location } from '@angular/common';

@Component({
  selector: 'snack-bar-component-example',
  templateUrl: './snack-bar-component-example.html',
  styleUrls: ['./snack-bar-component-example.css']
})
export class SnackBarComponentExample implements OnInit {

  constructor(public snackBar: MatSnackBar) { }

  ngOnInit() {
  }

  saveButtonClick = () =>{
    this.snackBar.open("This is a message!", "ACTION", {
      duration: 3000,
      panelClass: ["font-family:'Open Sans', sans-serif;"]
    });
  }
}

我已经将事件绑定到 HTML 按钮.当我删除 panelClass 配置时，持续时间配置工作正常.我正在导入 Google 字体(Open Sans)并尝试将该字体应用到 Snackbar.但是，我收到一个错误:

I have already binded the event to the HTML Button.When I am removing the panelClass config, then the duration config is working fine. I am importing a Google Font (Open Sans) and trying to apply the font to the Snackbar. However, I am receiving an error:

ERROR DOMException: Failed to execute 'add' on 'DOMTokenList': The token provided ('font-family:'Open Sans', sans-serif;') contains HTML space characters, which are not valid in tokens.

也许，我无法理解如何使用 panelClass.甚至，当我尝试添加此内容时，

Maybe, I am not able to understand how to use panelClass. Even, when I am trying to add this,

panelClass: ["color:white;"];

它仍然显示错误:

ERROR DOMException: Failed to execute 'add' on 'DOMTokenList': The token provided ('color: white;') contains HTML space characters, which are not valid in tokens.

我怎样才能修复这个错误并使一切正常工作?请帮忙.

How can I fix this error and get things working? Please help.

PS: 我知道 extraClasses 配置.但是，我不想使用它，因为它在文档中写道，它将很快被弃用.

PS: I am aware with the extraClasses config. But, I don't want to use it as it is written in the documentation that it will soon be deprecated.

PPS::持续时间配置工作正常.

PPS:: It is working fine with the duration config.

推荐答案

在你的组件 SnackBarComponentExample 中试试:

In your component SnackBarComponentExample try:

saveButtonClick = () =>{
  let config = new MatSnackBarConfig();
  config.duration = 5000;
  config.panelClass = ['red-snackbar']
  this.snackBar.open("This is a message!", "ACTION", config);
}

其中 'red-snackbar' 是您的应用主 styles.css 文件中的一个类.奇怪的是，当我引用与组件相关的 css 文件时，我无法让 config.panelClass 工作，但是一旦我将类放入主 styles.css 文件我的样式已正确应用于小吃店.

Where 'red-snackbar' is a class in your apps main styles.css file. Strangely I was unable to get the config.panelClass to work when I was referencing my components associated css file, but once I put the class into the main styles.css file my styles were applied correctly to the snackBar.

这篇关于Angular 5 Material Snackbar panelClass 配置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！